Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:
 "This series contain:
   - new i2c video drivers: ml86v7667 (video decoder),
                            ths8200 (video encoder)
   - a new video driver for EasyCap cards based on Fushicai USBTV007
   - Improved support for OF and embedded systems, with V4L2 async
     initialization and a better support for clocks
   - API cleanups on the ioctls used by the v4l2 debug tool
   - Lots of cleanups
   - As usual, several driver improvements and new cards additions
   - Revert two changesets that change the minimal symbol rate for
     stv0399, as request by Manu
   - Update MAINTAINERS and other files to point to my new e-mail"

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (378 commits)
  MAINTAINERS & ABI: Update to point to my new email
  [media] stb0899: restore minimal rate to 5Mbauds
  [media] exynos4-is: Correct colorspace handling at FIMC-LITE
  [media] exynos4-is: Set valid initial format on FIMC.n subdevs
  [media] exynos4-is: Set valid initial format on FIMC-IS-ISP subdev pads
  [media] exynos4-is: Fix format propagation on FIMC-IS-ISP subdev
  [media] exynos4-is: Set valid initial format at FIMC-LITE
  [media] exynos4-is: Fix format propagation on FIMC-LITE.n subdevs
  [media] MAINTAINERS: Update S5P/Exynos FIMC driver entry
  [media] Documentation: Update driver's directory in video4linux/fimc.txt
  [media] exynos4-is: Change fimc-is firmware file names
  [media] exynos4-is: Add support for Exynos5250 MIPI-CSIS
  [media] exynos4-is: Add Exynos5250 SoC support to fimc-lite driver
  [media] exynos4-is: Drop drvdata handling in fimc-lite for non-dt platforms
  [media] media: i2c: tvp514x: remove manual setting of subdev name
  [media] media: i2c: tvp7002: remove manual setting of subdev name
  [media] mem2mem: set missing v4l2_dev pointer
  [media] wl128x: add missing struct v4l2_device
  [media] tvp514x: Fix init seqeunce
  [media] saa7134: Fix sparse warnings by adding __user annotation
  ...

86 files changed, 2304 insertions, 1867 deletions

diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index f981d50a2a8..b2cd8ca51af 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -245,6 +245,15 @@ config VIDEO_KS0127
 	  To compile this driver as a module, choose M here: the
 	  module will be called ks0127.
 
+config VIDEO_ML86V7667
+	tristate "OKI ML86V7667 video decoder"
+	depends on VIDEO_V4L2 && I2C
+	---help---
+	  Support for the OKI Semiconductor ML86V7667 video decoder.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ml86v7667.
+
 config VIDEO_SAA7110
 	tristate "Philips SAA7110 video decoder"
 	depends on VIDEO_V4L2 && I2C
@@ -425,6 +434,15 @@ config VIDEO_AK881X
 	help
 	  Video output driver for AKM AK8813 and AK8814 TV encoders
 
+config VIDEO_THS8200
+	tristate "Texas Instruments THS8200 video encoder"
+	depends on VIDEO_V4L2 && I2C
+	---help---
+	  Support for the Texas Instruments THS8200 video encoder.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ths8200.
+
 comment "Camera sensor devices"
 
 config VIDEO_APTINA_PLL
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 720f42d9d9f..dc20653bb5a 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_VIDEO_BT856) += bt856.o
 obj-$(CONFIG_VIDEO_BT866) += bt866.o
 obj-$(CONFIG_VIDEO_KS0127) += ks0127.o
 obj-$(CONFIG_VIDEO_THS7303) += ths7303.o
+obj-$(CONFIG_VIDEO_THS8200) += ths8200.o
 obj-$(CONFIG_VIDEO_TVP5150) += tvp5150.o
 obj-$(CONFIG_VIDEO_TVP514X) += tvp514x.o
 obj-$(CONFIG_VIDEO_TVP7002) += tvp7002.o
@@ -70,3 +71,4 @@ obj-$(CONFIG_VIDEO_AS3645A)	+= as3645a.o
 obj-$(CONFIG_VIDEO_SMIAPP_PLL)	+= smiapp-pll.o
 obj-$(CONFIG_VIDEO_AK881X)		+= ak881x.o
 obj-$(CONFIG_VIDEO_IR_I2C)  += ir-kbd-i2c.o
+obj-$(CONFIG_VIDEO_ML86V7667)	+= ml86v7667.o
diff --git a/drivers/media/i2c/ad9389b.c b/drivers/media/i2c/ad9389b.c
index 58344b6c3a5..ba4364dfae6 100644
--- a/drivers/media/i2c/ad9389b.c
+++ b/drivers/media/i2c/ad9389b.c
@@ -32,7 +32,6 @@
 #include <linux/workqueue.h>
 #include <linux/v4l2-dv-timings.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-ctrls.h>
 #include <media/ad9389b.h>
@@ -343,12 +342,6 @@ static const struct v4l2_ctrl_ops ad9389b_ctrl_ops = {
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int ad9389b_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->val = ad9389b_rd(sd, reg->reg & 0xff);
 	reg->size = 1;
 	return 0;
@@ -356,24 +349,11 @@ static int ad9389b_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *
 
 static int ad9389b_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	ad9389b_wr(sd, reg->reg & 0xff, reg->val & 0xff);
 	return 0;
 }
 #endif
 
-static int ad9389b_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_AD9389B, 0);
-}
-
 static int ad9389b_log_status(struct v4l2_subdev *sd)
 {
 	struct ad9389b_state *state = get_ad9389b_state(sd);
@@ -600,7 +580,6 @@ static int ad9389b_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
 
 static const struct v4l2_subdev_core_ops ad9389b_core_ops = {
 	.log_status = ad9389b_log_status,
-	.g_chip_ident = ad9389b_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = ad9389b_g_register,
 	.s_register = ad9389b_s_register,
@@ -1188,15 +1167,14 @@ static int ad9389b_probe(struct i2c_client *client, const struct i2c_device_id *
 	v4l_dbg(1, debug, client, "detecting ad9389b client on address 0x%x\n",
 			client->addr << 1);
 
-	state = kzalloc(sizeof(struct ad9389b_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (!state)
 		return -ENOMEM;
 
 	/* Platform data */
 	if (pdata == NULL) {
 		v4l_err(client, "No platform data!\n");
-		err = -ENODEV;
-		goto err_free;
+		return -ENODEV;
 	}
 	memcpy(&state->pdata, pdata, sizeof(state->pdata));
 
@@ -1251,12 +1229,14 @@ static int ad9389b_probe(struct i2c_client *client, const struct i2c_device_id *
 	state->edid_i2c_client = i2c_new_dummy(client->adapter, (0x7e>>1));
 	if (state->edid_i2c_client == NULL) {
 		v4l2_err(sd, "failed to register edid i2c client\n");
+		err = -ENOMEM;
 		goto err_entity;
 	}
 
 	state->work_queue = create_singlethread_workqueue(sd->name);
 	if (state->work_queue == NULL) {
 		v4l2_err(sd, "could not create workqueue\n");
+		err = -ENOMEM;
 		goto err_unreg;
 	}
 
@@ -1276,8 +1256,6 @@ err_entity:
 	media_entity_cleanup(&sd->entity);
 err_hdl:
 	v4l2_ctrl_handler_free(&state->hdl);
-err_free:
-	kfree(state);
 	return err;
 }
 
@@ -1302,15 +1280,14 @@ static int ad9389b_remove(struct i2c_client *client)
 	v4l2_device_unregister_subdev(sd);
 	media_entity_cleanup(&sd->entity);
 	v4l2_ctrl_handler_free(sd->ctrl_handler);
-	kfree(get_ad9389b_state(sd));
 	return 0;
 }
 
 /* ----------------------------------------------------------------------- */
 
 static struct i2c_device_id ad9389b_id[] = {
-	{ "ad9389b", V4L2_IDENT_AD9389B },
-	{ "ad9889b", V4L2_IDENT_AD9389B },
+	{ "ad9389b", 0 },
+	{ "ad9889b", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, ad9389b_id);
diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c
index ef75abe5984..873fe1949e9 100644
--- a/drivers/media/i2c/adp1653.c
+++ b/drivers/media/i2c/adp1653.c
@@ -417,7 +417,7 @@ static int adp1653_probe(struct i2c_client *client,
 	if (client->dev.platform_data == NULL)
 		return -ENODEV;
 
-	flash = kzalloc(sizeof(*flash), GFP_KERNEL);
+	flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
 	if (flash == NULL)
 		return -ENOMEM;
 
@@ -443,7 +443,6 @@ static int adp1653_probe(struct i2c_client *client,
 
 free_and_quit:
 	v4l2_ctrl_handler_free(&flash->ctrls);
-	kfree(flash);
 	return ret;
 }
 
@@ -455,7 +454,7 @@ static int adp1653_remove(struct i2c_client *client)
 	v4l2_device_unregister_subdev(&flash->subdev);
 	v4l2_ctrl_handler_free(&flash->ctrls);
 	media_entity_cleanup(&flash->subdev.entity);
-	kfree(flash);
+
 	return 0;
 }
 
diff --git a/drivers/media/i2c/adv7170.c b/drivers/media/i2c/adv7170.c
index 6bc01fb98ff..04bb29720aa 100644
--- a/drivers/media/i2c/adv7170.c
+++ b/drivers/media/i2c/adv7170.c
@@ -36,7 +36,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 
 MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver");
 MODULE_AUTHOR("Maxim Yevtyushkin");
@@ -317,19 +316,8 @@ static int adv7170_s_fmt(struct v4l2_subdev *sd,
 	return ret;
 }
 
-static int adv7170_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7170, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
-static const struct v4l2_subdev_core_ops adv7170_core_ops = {
-	.g_chip_ident = adv7170_g_chip_ident,
-};
-
 static const struct v4l2_subdev_video_ops adv7170_video_ops = {
 	.s_std_output = adv7170_s_std_output,
 	.s_routing = adv7170_s_routing,
@@ -339,7 +327,6 @@ static const struct v4l2_subdev_video_ops adv7170_video_ops = {
 };
 
 static const struct v4l2_subdev_ops adv7170_ops = {
-	.core = &adv7170_core_ops,
 	.video = &adv7170_video_ops,
 };
 
@@ -359,7 +346,7 @@ static int adv7170_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	encoder = kzalloc(sizeof(struct adv7170), GFP_KERNEL);
+	encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL);
 	if (encoder == NULL)
 		return -ENOMEM;
 	sd = &encoder->sd;
@@ -384,7 +371,6 @@ static int adv7170_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_adv7170(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/adv7175.c b/drivers/media/i2c/adv7175.c
index c7640fab573..b88f3b3d5ed 100644
--- a/drivers/media/i2c/adv7175.c
+++ b/drivers/media/i2c/adv7175.c
@@ -32,7 +32,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 
 MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
 MODULE_AUTHOR("Dave Perks");
@@ -355,13 +354,6 @@ static int adv7175_s_fmt(struct v4l2_subdev *sd,
 	return ret;
 }
 
-static int adv7175_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7175, 0);
-}
-
 static int adv7175_s_power(struct v4l2_subdev *sd, int on)
 {
 	if (on)
@@ -375,7 +367,6 @@ static int adv7175_s_power(struct v4l2_subdev *sd, int on)
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_subdev_core_ops adv7175_core_ops = {
-	.g_chip_ident = adv7175_g_chip_ident,
 	.init = adv7175_init,
 	.s_power = adv7175_s_power,
 };
@@ -409,7 +400,7 @@ static int adv7175_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL);
+	encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL);
 	if (encoder == NULL)
 		return -ENOMEM;
 	sd = &encoder->sd;
@@ -434,7 +425,6 @@ static int adv7175_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_adv7175(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index afd561ab190..d7d99f1c69e 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -1,6 +1,8 @@
 /*
  * adv7180.c Analog Devices ADV7180 video decoder driver
  * Copyright (c) 2009 Intel Corporation
+ * Copyright (C) 2013 Cogent Embedded, Inc.
+ * Copyright (C) 2013 Renesas Solutions Corp.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -27,7 +29,6 @@
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-ctrls.h>
-#include <media/v4l2-chip-ident.h>
 #include <linux/mutex.h>
 
 #define ADV7180_INPUT_CONTROL_REG			0x00
@@ -272,14 +273,6 @@ static int adv7180_g_input_status(struct v4l2_subdev *sd, u32 *status)
 	return ret;
 }
 
-static int adv7180_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7180, 0);
-}
-
 static int adv7180_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
 {
 	struct adv7180_state *state = to_state(sd);
@@ -397,14 +390,57 @@ static void adv7180_exit_controls(struct adv7180_state *state)
 	v4l2_ctrl_handler_free(&state->ctrl_hdl);
 }
 
+static int adv7180_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index,
+				 enum v4l2_mbus_pixelcode *code)
+{
+	if (index > 0)
+		return -EINVAL;
+
+	*code = V4L2_MBUS_FMT_YUYV8_2X8;
+
+	return 0;
+}
+
+static int adv7180_mbus_fmt(struct v4l2_subdev *sd,
+			    struct v4l2_mbus_framefmt *fmt)
+{
+	struct adv7180_state *state = to_state(sd);
+
+	fmt->code = V4L2_MBUS_FMT_YUYV8_2X8;
+	fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
+	fmt->field = V4L2_FIELD_INTERLACED;
+	fmt->width = 720;
+	fmt->height = state->curr_norm & V4L2_STD_525_60 ? 480 : 576;
+
+	return 0;
+}
+
+static int adv7180_g_mbus_config(struct v4l2_subdev *sd,
+				 struct v4l2_mbus_config *cfg)
+{
+	/*
+	 * The ADV7180 sensor supports BT.601/656 output modes.
+	 * The BT.656 is default and not yet configurable by s/w.
+	 */
+	cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
+		     V4L2_MBUS_DATA_ACTIVE_HIGH;
+	cfg->type = V4L2_MBUS_BT656;
+
+	return 0;
+}
+
 static const struct v4l2_subdev_video_ops adv7180_video_ops = {
 	.querystd = adv7180_querystd,
 	.g_input_status = adv7180_g_input_status,
 	.s_routing = adv7180_s_routing,
+	.enum_mbus_fmt = adv7180_enum_mbus_fmt,
+	.try_mbus_fmt = adv7180_mbus_fmt,
+	.g_mbus_fmt = adv7180_mbus_fmt,
+	.s_mbus_fmt = adv7180_mbus_fmt,
+	.g_mbus_config = adv7180_g_mbus_config,
 };
 
 static const struct v4l2_subdev_core_ops adv7180_core_ops = {
-	.g_chip_ident = adv7180_g_chip_ident,
 	.s_std = adv7180_s_std,
 };
 
@@ -555,7 +591,7 @@ static int adv7180_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%02x (%s)\n",
 		 client->addr, client->adapter->name);
 
-	state = kzalloc(sizeof(struct adv7180_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL) {
 		ret = -ENOMEM;
 		goto err;
@@ -582,7 +618,6 @@ err_free_ctrl:
 err_unreg_subdev:
 	mutex_destroy(&state->mutex);
 	v4l2_device_unregister_subdev(sd);
-	kfree(state);
 err:
 	printk(KERN_ERR KBUILD_MODNAME ": Failed to probe: %d\n", ret);
 	return ret;
@@ -607,7 +642,6 @@ static int adv7180_remove(struct i2c_client *client)
 
 	mutex_destroy(&state->mutex);
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_state(sd));
 	return 0;
 }
 
@@ -616,9 +650,10 @@ static const struct i2c_device_id adv7180_id[] = {
 	{},
 };
 
-#ifdef CONFIG_PM
-static int adv7180_suspend(struct i2c_client *client, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int adv7180_suspend(struct device *dev)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	int ret;
 
 	ret = i2c_smbus_write_byte_data(client, ADV7180_PWR_MAN_REG,
@@ -628,8 +663,9 @@ static int adv7180_suspend(struct i2c_client *client, pm_message_t state)
 	return 0;
 }
 
-static int adv7180_resume(struct i2c_client *client)
+static int adv7180_resume(struct device *dev)
 {
+	struct i2c_client *client = to_i2c_client(dev);
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 	struct adv7180_state *state = to_state(sd);
 	int ret;
@@ -643,6 +679,12 @@ static int adv7180_resume(struct i2c_client *client)
 		return ret;
 	return 0;
 }
+
+static SIMPLE_DEV_PM_OPS(adv7180_pm_ops, adv7180_suspend, adv7180_resume);
+#define ADV7180_PM_OPS (&adv7180_pm_ops)
+
+#else
+#define ADV7180_PM_OPS NULL
 #endif
 
 MODULE_DEVICE_TABLE(i2c, adv7180_id);
@@ -651,13 +693,10 @@ static struct i2c_driver adv7180_driver = {
 	.driver = {
 		   .owner = THIS_MODULE,
 		   .name = KBUILD_MODNAME,
+		   .pm = ADV7180_PM_OPS,
 		   },
 	.probe = adv7180_probe,
 	.remove = adv7180_remove,
-#ifdef CONFIG_PM
-	.suspend = adv7180_suspend,
-	.resume = adv7180_resume,
-#endif
 	.id_table = adv7180_id,
 };
 
diff --git a/drivers/media/i2c/adv7183.c b/drivers/media/i2c/adv7183.c
index 56a1fa4af0f..6f738d8e3a8 100644
--- a/drivers/media/i2c/adv7183.c
+++ b/drivers/media/i2c/adv7183.c
@@ -28,7 +28,6 @@
 #include <linux/videodev2.h>
 
 #include <media/adv7183.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-device.h>
 
@@ -375,28 +374,28 @@ static int adv7183_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
 	reg = adv7183_read(sd, ADV7183_STATUS_1);
 	switch ((reg >> 0x4) & 0x7) {
 	case 0:
-		*std = V4L2_STD_NTSC;
+		*std &= V4L2_STD_NTSC;
 		break;
 	case 1:
-		*std = V4L2_STD_NTSC_443;
+		*std &= V4L2_STD_NTSC_443;
 		break;
 	case 2:
-		*std = V4L2_STD_PAL_M;
+		*std &= V4L2_STD_PAL_M;
 		break;
 	case 3:
-		*std = V4L2_STD_PAL_60;
+		*std &= V4L2_STD_PAL_60;
 		break;
 	case 4:
-		*std = V4L2_STD_PAL;
+		*std &= V4L2_STD_PAL;
 		break;
 	case 5:
-		*std = V4L2_STD_SECAM;
+		*std &= V4L2_STD_SECAM;
 		break;
 	case 6:
-		*std = V4L2_STD_PAL_Nc;
+		*std &= V4L2_STD_PAL_Nc;
 		break;
 	case 7:
-		*std = V4L2_STD_SECAM;
+		*std &= V4L2_STD_SECAM;
 		break;
 	default:
 		*std = V4L2_STD_UNKNOWN;
@@ -474,34 +473,16 @@ static int adv7183_s_stream(struct v4l2_subdev *sd, int enable)
 	struct adv7183 *decoder = to_adv7183(sd);
 
 	if (enable)
-		gpio_direction_output(decoder->oe_pin, 0);
+		gpio_set_value(decoder->oe_pin, 0);
 	else
-		gpio_direction_output(decoder->oe_pin, 1);
+		gpio_set_value(decoder->oe_pin, 1);
 	udelay(1);
 	return 0;
 }
 
-static int adv7183_g_chip_ident(struct v4l2_subdev *sd,
-		struct v4l2_dbg_chip_ident *chip)
-{
-	int rev;
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	/* 0x11 for adv7183, 0x13 for adv7183b */
-	rev = adv7183_read(sd, ADV7183_IDENT);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7183, rev);
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int adv7183_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->val = adv7183_read(sd, reg->reg & 0xff);
 	reg->size = 1;
 	return 0;
@@ -509,12 +490,6 @@ static int adv7183_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *
 
 static int adv7183_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	adv7183_write(sd, reg->reg & 0xff, reg->val & 0xff);
 	return 0;
 }
@@ -529,7 +504,6 @@ static const struct v4l2_subdev_core_ops adv7183_core_ops = {
 	.g_std = adv7183_g_std,
 	.s_std = adv7183_s_std,
 	.reset = adv7183_reset,
-	.g_chip_ident = adv7183_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = adv7183_g_register,
 	.s_register = adv7183_s_register,
@@ -573,23 +547,24 @@ static int adv7183_probe(struct i2c_client *client,
 	if (pin_array == NULL)
 		return -EINVAL;
 
-	decoder = kzalloc(sizeof(struct adv7183), GFP_KERNEL);
+	decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
 	if (decoder == NULL)
 		return -ENOMEM;
 
 	decoder->reset_pin = pin_array[0];
 	decoder->oe_pin = pin_array[1];
 
-	if (gpio_request(decoder->reset_pin, "ADV7183 Reset")) {
+	if (devm_gpio_request_one(&client->dev, decoder->reset_pin,
+				  GPIOF_OUT_INIT_LOW, "ADV7183 Reset")) {
 		v4l_err(client, "failed to request GPIO %d\n", decoder->reset_pin);
-		ret = -EBUSY;
-		goto err_free_decoder;
+		return -EBUSY;
 	}
 
-	if (gpio_request(decoder->oe_pin, "ADV7183 Output Enable")) {
+	if (devm_gpio_request_one(&client->dev, decoder->oe_pin,
+				  GPIOF_OUT_INIT_HIGH,
+				  "ADV7183 Output Enable")) {
 		v4l_err(client, "failed to request GPIO %d\n", decoder->oe_pin);
-		ret = -EBUSY;
-		goto err_free_reset;
+		return -EBUSY;
 	}
 
 	sd = &decoder->sd;
@@ -611,7 +586,7 @@ static int adv7183_probe(struct i2c_client *client,
 		ret = hdl->error;
 
 		v4l2_ctrl_handler_free(hdl);
-		goto err_free_oe;
+		return ret;
 	}
 
 	/* v4l2 doesn't support an autodetect standard, pick PAL as default */
@@ -619,12 +594,10 @@ static int adv7183_probe(struct i2c_client *client,
 	decoder->input = ADV7183_COMPOSITE4;
 	decoder->output = ADV7183_8BIT_OUT;
 
-	gpio_direction_output(decoder->oe_pin, 1);
 	/* reset chip */
-	gpio_direction_output(decoder->reset_pin, 0);
 	/* reset pulse width at least 5ms */
 	mdelay(10);
-	gpio_direction_output(decoder->reset_pin, 1);
+	gpio_set_value(decoder->reset_pin, 1);
 	/* wait 5ms before any further i2c writes are performed */
 	mdelay(5);
 
@@ -638,29 +611,18 @@ static int adv7183_probe(struct i2c_client *client,
 	ret = v4l2_ctrl_handler_setup(hdl);
 	if (ret) {
 		v4l2_ctrl_handler_free(hdl);
-		goto err_free_oe;
+		return ret;
 	}
 
 	return 0;
-err_free_oe:
-	gpio_free(decoder->oe_pin);
-err_free_reset:
-	gpio_free(decoder->reset_pin);
-err_free_decoder:
-	kfree(decoder);
-	return ret;
 }
 
 static int adv7183_remove(struct i2c_client *client)
 {
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct adv7183 *decoder = to_adv7183(sd);
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(sd->ctrl_handler);
-	gpio_free(decoder->oe_pin);
-	gpio_free(decoder->reset_pin);
-	kfree(decoder);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/adv7343.c b/drivers/media/i2c/adv7343.c
index 9fc2b985df0..7606218ec4a 100644
--- a/drivers/media/i2c/adv7343.c
+++ b/drivers/media/i2c/adv7343.c
@@ -28,7 +28,6 @@
 
 #include <media/adv7343.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 #include "adv7343_regs.h"
@@ -311,21 +310,12 @@ static int adv7343_s_ctrl(struct v4l2_ctrl *ctrl)
 	return -EINVAL;
 }
 
-static int adv7343_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7343, 0);
-}
-
 static const struct v4l2_ctrl_ops adv7343_ctrl_ops = {
 	.s_ctrl = adv7343_s_ctrl,
 };
 
 static const struct v4l2_subdev_core_ops adv7343_core_ops = {
 	.log_status = adv7343_log_status,
-	.g_chip_ident = adv7343_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
diff --git a/drivers/media/i2c/adv7393.c b/drivers/media/i2c/adv7393.c
index 3dc6098c726..558f19154eb 100644
--- a/drivers/media/i2c/adv7393.c
+++ b/drivers/media/i2c/adv7393.c
@@ -33,7 +33,6 @@
 
 #include <media/adv7393.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 #include "adv7393_regs.h"
@@ -301,21 +300,12 @@ static int adv7393_s_ctrl(struct v4l2_ctrl *ctrl)
 	return -EINVAL;
 }
 
-static int adv7393_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7393, 0);
-}
-
 static const struct v4l2_ctrl_ops adv7393_ctrl_ops = {
 	.s_ctrl = adv7393_s_ctrl,
 };
 
 static const struct v4l2_subdev_core_ops adv7393_core_ops = {
 	.log_status = adv7393_log_status,
-	.g_chip_ident = adv7393_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -410,7 +400,7 @@ static int adv7393_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct adv7393_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 
@@ -444,16 +434,13 @@ static int adv7393_probe(struct i2c_client *client,
 		int err = state->hdl.error;
 
 		v4l2_ctrl_handler_free(&state->hdl);
-		kfree(state);
 		return err;
 	}
 	v4l2_ctrl_handler_setup(&state->hdl);
 
 	err = adv7393_initialize(&state->sd);
-	if (err) {
+	if (err)
 		v4l2_ctrl_handler_free(&state->hdl);
-		kfree(state);
-	}
 	return err;
 }
 
@@ -464,7 +451,6 @@ static int adv7393_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&state->hdl);
-	kfree(state);
 
 	return 0;
 }
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index 31a63c9324f..1d675b58fd7 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -38,7 +38,6 @@
 #include <linux/v4l2-dv-timings.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-ctrls.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/adv7604.h>
 
 static int debug;
@@ -643,12 +642,6 @@ static void adv7604_inv_register(struct v4l2_subdev *sd)
 static int adv7604_g_register(struct v4l2_subdev *sd,
 					struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->size = 1;
 	switch (reg->reg >> 8) {
 	case 0:
@@ -701,12 +694,6 @@ static int adv7604_g_register(struct v4l2_subdev *sd,
 static int adv7604_s_register(struct v4l2_subdev *sd,
 					const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	switch (reg->reg >> 8) {
 	case 0:
 		io_write(sd, reg->reg & 0xff, reg->val & 0xff);
@@ -984,14 +971,6 @@ static int adv7604_s_ctrl(struct v4l2_ctrl *ctrl)
 	return -EINVAL;
 }
 
-static int adv7604_g_chip_ident(struct v4l2_subdev *sd,
-					struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7604, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
 static inline bool no_power(struct v4l2_subdev *sd)
@@ -1787,7 +1766,6 @@ static const struct v4l2_subdev_core_ops adv7604_core_ops = {
 	.s_ctrl = v4l2_subdev_s_ctrl,
 	.queryctrl = v4l2_subdev_queryctrl,
 	.querymenu = v4l2_subdev_querymenu,
-	.g_chip_ident = adv7604_g_chip_ident,
 	.interrupt_service_routine = adv7604_isr,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = adv7604_g_register,
@@ -1968,7 +1946,7 @@ static int adv7604_probe(struct i2c_client *client,
 	v4l_dbg(1, debug, client, "detecting adv7604 client on address 0x%x\n",
 			client->addr << 1);
 
-	state = kzalloc(sizeof(struct adv7604_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (!state) {
 		v4l_err(client, "Could not allocate adv7604_state memory!\n");
 		return -ENOMEM;
@@ -1977,8 +1955,7 @@ static int adv7604_probe(struct i2c_client *client,
 	/* platform data */
 	if (!pdata) {
 		v4l_err(client, "No platform data!\n");
-		err = -ENODEV;
-		goto err_state;
+		return -ENODEV;
 	}
 	memcpy(&state->pdata, pdata, sizeof(state->pdata));
 
@@ -1991,8 +1968,7 @@ static int adv7604_probe(struct i2c_client *client,
 	if (adv_smbus_read_byte_data_check(client, 0xfb, false) != 0x68) {
 		v4l2_info(sd, "not an adv7604 on address 0x%x\n",
 				client->addr << 1);
-		err = -ENODEV;
-		goto err_state;
+		return -ENODEV;
 	}
 
 	/* control handlers */
@@ -2093,8 +2069,6 @@ err_i2c:
 	adv7604_unregister_clients(state);
 err_hdl:
 	v4l2_ctrl_handler_free(hdl);
-err_state:
-	kfree(state);
 	return err;
 }
 
@@ -2111,7 +2085,6 @@ static int adv7604_remove(struct i2c_client *client)
 	media_entity_cleanup(&sd->entity);
 	adv7604_unregister_clients(to_state(sd));
 	v4l2_ctrl_handler_free(sd->ctrl_handler);
-	kfree(to_state(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/ak881x.c b/drivers/media/i2c/ak881x.c
index fd47465e4f6..c14e66756b9 100644
--- a/drivers/media/i2c/ak881x.c
+++ b/drivers/media/i2c/ak881x.c
@@ -16,7 +16,6 @@
 #include <linux/module.h>
 
 #include <media/ak881x.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-device.h>
 
@@ -33,7 +32,6 @@ struct ak881x {
 	struct v4l2_subdev subdev;
 	struct ak881x_pdata *pdata;
 	unsigned int lines;
-	int id;	/* DEVICE_ID code V4L2_IDENT_AK881X code from v4l2-chip-ident.h */
 	char revision;	/* DEVICE_REVISION content */
 };
 
@@ -62,36 +60,16 @@ static struct ak881x *to_ak881x(const struct i2c_client *client)
 	return container_of(i2c_get_clientdata(client), struct ak881x, subdev);
 }
 
-static int ak881x_g_chip_ident(struct v4l2_subdev *sd,
-			       struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-	struct ak881x *ak881x = to_ak881x(client);
-
-	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
-		return -EINVAL;
-
-	if (id->match.addr != client->addr)
-		return -ENODEV;
-
-	id->ident	= ak881x->id;
-	id->revision	= ak881x->revision;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int ak881x_g_register(struct v4l2_subdev *sd,
 			     struct v4l2_dbg_register *reg)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x26)
+	if (reg->reg > 0x26)
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
+	reg->size = 1;
 	reg->val = reg_read(client, reg->reg);
 
 	if (reg->val > 0xffff)
@@ -105,12 +83,9 @@ static int ak881x_s_register(struct v4l2_subdev *sd,
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x26)
+	if (reg->reg > 0x26)
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
 	if (reg_write(client, reg->reg, reg->val) < 0)
 		return -EIO;
 
@@ -229,7 +204,6 @@ static int ak881x_s_stream(struct v4l2_subdev *sd, int enable)
 }
 
 static struct v4l2_subdev_core_ops ak881x_subdev_core_ops = {
-	.g_chip_ident	= ak881x_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= ak881x_g_register,
 	.s_register	= ak881x_s_register,
@@ -264,7 +238,7 @@ static int ak881x_probe(struct i2c_client *client,
 		return -EIO;
 	}
 
-	ak881x = kzalloc(sizeof(struct ak881x), GFP_KERNEL);
+	ak881x = devm_kzalloc(&client->dev, sizeof(*ak881x), GFP_KERNEL);
 	if (!ak881x)
 		return -ENOMEM;
 
@@ -274,15 +248,11 @@ static int ak881x_probe(struct i2c_client *client,
 
 	switch (data) {
 	case 0x13:
-		ak881x->id = V4L2_IDENT_AK8813;
-		break;
 	case 0x14:
-		ak881x->id = V4L2_IDENT_AK8814;
 		break;
 	default:
 		dev_err(&client->dev,
 			"No ak881x chip detected, register read %x\n", data);
-		kfree(ak881x);
 		return -ENODEV;
 	}
 
@@ -331,7 +301,6 @@ static int ak881x_remove(struct i2c_client *client)
 	struct ak881x *ak881x = to_ak881x(client);
 
 	v4l2_device_unregister_subdev(&ak881x->subdev);
-	kfree(ak881x);
 
 	return 0;
 }
diff --git a/drivers/media/i2c/as3645a.c b/drivers/media/i2c/as3645a.c
index 58d523f2648..301084b0788 100644
--- a/drivers/media/i2c/as3645a.c
+++ b/drivers/media/i2c/as3645a.c
@@ -813,7 +813,7 @@ static int as3645a_probe(struct i2c_client *client,
 	if (client->dev.platform_data == NULL)
 		return -ENODEV;
 
-	flash = kzalloc(sizeof(*flash), GFP_KERNEL);
+	flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
 	if (flash == NULL)
 		return -ENOMEM;
 
@@ -838,10 +838,8 @@ static int as3645a_probe(struct i2c_client *client,
 	flash->led_mode = V4L2_FLASH_LED_MODE_NONE;
 
 done:
-	if (ret < 0) {
+	if (ret < 0)
 		v4l2_ctrl_handler_free(&flash->ctrls);
-		kfree(flash);
-	}
 
 	return ret;
 }
@@ -855,7 +853,6 @@ static int as3645a_remove(struct i2c_client *client)
 	v4l2_ctrl_handler_free(&flash->ctrls);
 	media_entity_cleanup(&flash->subdev.entity);
 	mutex_destroy(&flash->power_lock);
-	kfree(flash);
 
 	return 0;
 }
diff --git a/drivers/media/i2c/bt819.c b/drivers/media/i2c/bt819.c
index 377bf05b1ef..369cf6ff88f 100644
--- a/drivers/media/i2c/bt819.c
+++ b/drivers/media/i2c/bt819.c
@@ -36,7 +36,6 @@
 #include <linux/videodev2.h>
 #include <linux/slab.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 #include <media/bt819.h>
 
@@ -57,7 +56,6 @@ struct bt819 {
 	unsigned char reg[32];
 
 	v4l2_std_id norm;
-	int ident;
 	int input;
 	int enable;
 };
@@ -217,15 +215,17 @@ static int bt819_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd)
 	struct bt819 *decoder = to_bt819(sd);
 	int status = bt819_read(decoder, 0x00);
 	int res = V4L2_IN_ST_NO_SIGNAL;
-	v4l2_std_id std;
+	v4l2_std_id std = pstd ? *pstd : V4L2_STD_ALL;
 
 	if ((status & 0x80))
 		res = 0;
+	else
+		std = V4L2_STD_UNKNOWN;
 
 	if ((status & 0x10))
-		std = V4L2_STD_PAL;
+		std &= V4L2_STD_PAL;
 	else
-		std = V4L2_STD_NTSC;
+		std &= V4L2_STD_NTSC;
 	if (pstd)
 		*pstd = std;
 	if (pstatus)
@@ -373,14 +373,6 @@ static int bt819_s_ctrl(struct v4l2_ctrl *ctrl)
 	return 0;
 }
 
-static int bt819_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct bt819 *decoder = to_bt819(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, decoder->ident, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_ctrl_ops bt819_ctrl_ops = {
@@ -388,7 +380,6 @@ static const struct v4l2_ctrl_ops bt819_ctrl_ops = {
 };
 
 static const struct v4l2_subdev_core_ops bt819_core_ops = {
-	.g_chip_ident = bt819_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -425,7 +416,7 @@ static int bt819_probe(struct i2c_client *client,
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		return -ENODEV;
 
-	decoder = kzalloc(sizeof(struct bt819), GFP_KERNEL);
+	decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
 	if (decoder == NULL)
 		return -ENOMEM;
 	sd = &decoder->sd;
@@ -435,15 +426,12 @@ static int bt819_probe(struct i2c_client *client,
 	switch (ver & 0xf0) {
 	case 0x70:
 		name = "bt819a";
-		decoder->ident = V4L2_IDENT_BT819A;
 		break;
 	case 0x60:
 		name = "bt817a";
-		decoder->ident = V4L2_IDENT_BT817A;
 		break;
 	case 0x20:
 		name = "bt815a";
-		decoder->ident = V4L2_IDENT_BT815A;
 		break;
 	default:
 		v4l2_dbg(1, debug, sd,
@@ -476,7 +464,6 @@ static int bt819_probe(struct i2c_client *client,
 		int err = decoder->hdl.error;
 
 		v4l2_ctrl_handler_free(&decoder->hdl);
-		kfree(decoder);
 		return err;
 	}
 	v4l2_ctrl_handler_setup(&decoder->hdl);
@@ -490,7 +477,6 @@ static int bt819_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&decoder->hdl);
-	kfree(decoder);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/bt856.c b/drivers/media/i2c/bt856.c
index 7e5bd365c23..7fc163d0253 100644
--- a/drivers/media/i2c/bt856.c
+++ b/drivers/media/i2c/bt856.c
@@ -36,7 +36,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 
 MODULE_DESCRIPTION("Brooktree-856A video encoder driver");
 MODULE_AUTHOR("Mike Bernson & Dave Perks");
@@ -177,17 +176,9 @@ static int bt856_s_routing(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int bt856_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_BT856, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_subdev_core_ops bt856_core_ops = {
-	.g_chip_ident = bt856_g_chip_ident,
 	.init = bt856_init,
 };
 
@@ -216,7 +207,7 @@ static int bt856_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	encoder = kzalloc(sizeof(struct bt856), GFP_KERNEL);
+	encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL);
 	if (encoder == NULL)
 		return -ENOMEM;
 	sd = &encoder->sd;
@@ -250,7 +241,6 @@ static int bt856_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_bt856(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/bt866.c b/drivers/media/i2c/bt866.c
index 905320b67a1..a8bf10fc665 100644
--- a/drivers/media/i2c/bt866.c
+++ b/drivers/media/i2c/bt866.c
@@ -36,7 +36,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 
 MODULE_DESCRIPTION("Brooktree-866 video encoder driver");
 MODULE_AUTHOR("Mike Bernson & Dave Perks");
@@ -175,26 +174,14 @@ static int bt866_s_routing(struct v4l2_subdev *sd,
 	bt866_write(client, 0xdc, val);
 #endif
 
-static int bt866_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_BT866, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
-static const struct v4l2_subdev_core_ops bt866_core_ops = {
-	.g_chip_ident = bt866_g_chip_ident,
-};
-
 static const struct v4l2_subdev_video_ops bt866_video_ops = {
 	.s_std_output = bt866_s_std_output,
 	.s_routing = bt866_s_routing,
 };
 
 static const struct v4l2_subdev_ops bt866_ops = {
-	.core = &bt866_core_ops,
 	.video = &bt866_video_ops,
 };
 
@@ -207,7 +194,7 @@ static int bt866_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	encoder = kzalloc(sizeof(*encoder), GFP_KERNEL);
+	encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL);
 	if (encoder == NULL)
 		return -ENOMEM;
 	sd = &encoder->sd;
@@ -220,7 +207,6 @@ static int bt866_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_bt866(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/cs5345.c b/drivers/media/i2c/cs5345.c
index 1d2f7c8512b..34b76a9e751 100644
--- a/drivers/media/i2c/cs5345.c
+++ b/drivers/media/i2c/cs5345.c
@@ -24,7 +24,6 @@
 #include <linux/videodev2.h>
 #include <linux/slab.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC");
@@ -99,12 +98,6 @@ static int cs5345_s_ctrl(struct v4l2_ctrl *ctrl)
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int cs5345_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->size = 1;
 	reg->val = cs5345_read(sd, reg->reg & 0x1f);
 	return 0;
@@ -112,24 +105,11 @@ static int cs5345_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *r
 
 static int cs5345_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	cs5345_write(sd, reg->reg & 0x1f, reg->val & 0xff);
 	return 0;
 }
 #endif
 
-static int cs5345_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_CS5345, 0);
-}
-
 static int cs5345_log_status(struct v4l2_subdev *sd)
 {
 	u8 v = cs5345_read(sd, 0x09) & 7;
@@ -152,7 +132,6 @@ static const struct v4l2_ctrl_ops cs5345_ctrl_ops = {
 
 static const struct v4l2_subdev_core_ops cs5345_core_ops = {
 	.log_status = cs5345_log_status,
-	.g_chip_ident = cs5345_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -190,7 +169,7 @@ static int cs5345_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct cs5345_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 	sd = &state->sd;
@@ -206,7 +185,6 @@ static int cs5345_probe(struct i2c_client *client,
 		int err = state->hdl.error;
 
 		v4l2_ctrl_handler_free(&state->hdl);
-		kfree(state);
 		return err;
 	}
 	/* set volume/mute */
@@ -227,7 +205,6 @@ static int cs5345_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&state->hdl);
-	kfree(state);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/cs53l32a.c b/drivers/media/i2c/cs53l32a.c
index b293912206e..27400c16ef9 100644
--- a/drivers/media/i2c/cs53l32a.c
+++ b/drivers/media/i2c/cs53l32a.c
@@ -28,7 +28,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC");
@@ -104,14 +103,6 @@ static int cs53l32a_s_ctrl(struct v4l2_ctrl *ctrl)
 	return -EINVAL;
 }
 
-static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client,
-			chip, V4L2_IDENT_CS53l32A, 0);
-}
-
 static int cs53l32a_log_status(struct v4l2_subdev *sd)
 {
 	struct cs53l32a_state *state = to_state(sd);
@@ -130,7 +121,6 @@ static const struct v4l2_ctrl_ops cs53l32a_ctrl_ops = {
 
 static const struct v4l2_subdev_core_ops cs53l32a_core_ops = {
 	.log_status = cs53l32a_log_status,
-	.g_chip_ident = cs53l32a_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -175,7 +165,7 @@ static int cs53l32a_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct cs53l32a_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 	sd = &state->sd;
@@ -197,7 +187,6 @@ static int cs53l32a_probe(struct i2c_client *client,
 		int err = state->hdl.error;
 
 		v4l2_ctrl_handler_free(&state->hdl);
-		kfree(state);
 		return err;
 	}
 
@@ -228,7 +217,6 @@ static int cs53l32a_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&state->hdl);
-	kfree(state);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c
index 12fb9b2eb88..2e3771d5735 100644
--- a/drivers/media/i2c/cx25840/cx25840-core.c
+++ b/drivers/media/i2c/cx25840/cx25840-core.c
@@ -45,7 +45,6 @@
 #include <linux/delay.h>
 #include <linux/math64.h>
 #include <media/v4l2-common.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/cx25840.h>
 
 #include "cx25840-core.h"
@@ -498,7 +497,7 @@ static void cx23885_initialize(struct i2c_client *client)
 
 	/* Sys PLL */
 	switch (state->id) {
-	case V4L2_IDENT_CX23888_AV:
+	case CX23888_AV:
 		/*
 		 * 50.0 MHz * (0xb + 0xe8ba26/0x2000000)/4 = 5 * 28.636363 MHz
 		 * 572.73 MHz before post divide
@@ -511,7 +510,7 @@ static void cx23885_initialize(struct i2c_client *client)
 		cx25840_write4(client, 0x42c, 0x42600000);
 		cx25840_write4(client, 0x44c, 0x161f1000);
 		break;
-	case V4L2_IDENT_CX23887_AV:
+	case CX23887_AV:
 		/*
 		 * 25.0 MHz * (0x16 + 0x1d1744c/0x2000000)/4 = 5 * 28.636363 MHz
 		 * 572.73 MHz before post divide
@@ -519,7 +518,7 @@ static void cx23885_initialize(struct i2c_client *client)
 		cx25840_write4(client, 0x11c, 0x01d1744c);
 		cx25840_write4(client, 0x118, 0x00000416);
 		break;
-	case V4L2_IDENT_CX23885_AV:
+	case CX23885_AV:
 	default:
 		/*
 		 * 28.636363 MHz * (0x14 + 0x0/0x2000000)/4 = 5 * 28.636363 MHz
@@ -546,7 +545,7 @@ static void cx23885_initialize(struct i2c_client *client)
 
 	/* HVR1850 */
 	switch (state->id) {
-	case V4L2_IDENT_CX23888_AV:
+	case CX23888_AV:
 		/* 888/HVR1250 specific */
 		cx25840_write4(client, 0x10c, 0x13333333);
 		cx25840_write4(client, 0x108, 0x00000515);
@@ -570,7 +569,7 @@ static void cx23885_initialize(struct i2c_client *client)
 	 * 48 ksps, 16 bits/sample, x16 multiplier = 12.288 MHz
 	 */
 	switch (state->id) {
-	case V4L2_IDENT_CX23888_AV:
+	case CX23888_AV:
 		/*
 		 * 50.0 MHz * (0x7 + 0x0bedfa4/0x2000000)/3 = 122.88 MHz
 		 * 368.64 MHz before post divide
@@ -580,7 +579,7 @@ static void cx23885_initialize(struct i2c_client *client)
 		cx25840_write4(client, 0x114, 0x017dbf48);
 		cx25840_write4(client, 0x110, 0x000a030e);
 		break;
-	case V4L2_IDENT_CX23887_AV:
+	case CX23887_AV:
 		/*
 		 * 25.0 MHz * (0xe + 0x17dbf48/0x2000000)/3 = 122.88 MHz
 		 * 368.64 MHz before post divide
@@ -589,7 +588,7 @@ static void cx23885_initialize(struct i2c_client *client)
 		cx25840_write4(client, 0x114, 0x017dbf48);
 		cx25840_write4(client, 0x110, 0x000a030e);
 		break;
-	case V4L2_IDENT_CX23885_AV:
+	case CX23885_AV:
 	default:
 		/*
 		 * 28.636363 MHz * (0xc + 0x1bf0c9e/0x2000000)/3 = 122.88 MHz
@@ -1662,10 +1661,6 @@ static int cx25840_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->size = 1;
 	reg->val = cx25840_read(client, reg->reg & 0x0fff);
 	return 0;
@@ -1675,10 +1670,6 @@ static int cx25840_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_regi
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
 	return 0;
 }
@@ -1938,14 +1929,6 @@ static int cx25840_reset(struct v4l2_subdev *sd, u32 val)
 	return 0;
 }
 
-static int cx25840_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct cx25840_state *state = to_state(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, state->id, state->rev);
-}
-
 static int cx25840_log_status(struct v4l2_subdev *sd)
 {
 	struct cx25840_state *state = to_state(sd);
@@ -5051,7 +5034,6 @@ static const struct v4l2_ctrl_ops cx25840_ctrl_ops = {
 
 static const struct v4l2_subdev_core_ops cx25840_core_ops = {
 	.log_status = cx25840_log_status,
-	.g_chip_ident = cx25840_g_chip_ident,
 	.g_ctrl = v4l2_subdev_g_ctrl,
 	.s_ctrl = v4l2_subdev_s_ctrl,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -5128,18 +5110,18 @@ static u32 get_cx2388x_ident(struct i2c_client *client)
 		ret = cx25840_read4(client, 0x300);
 		if (((ret & 0xffff0000) >> 16) == (ret & 0xffff)) {
 			/* No DIF */
-			ret = V4L2_IDENT_CX23885_AV;
+			ret = CX23885_AV;
 		} else {
 			/* CX23887 has a broken DIF, but the registers
 			 * appear valid (but unused), good enough to detect. */
-			ret = V4L2_IDENT_CX23887_AV;
+			ret = CX23887_AV;
 		}
 	} else if (cx25840_read4(client, 0x300) & 0x0fffffff) {
 		/* DIF PLL Freq Word reg exists; chip must be a CX23888 */
-		ret = V4L2_IDENT_CX23888_AV;
+		ret = CX23888_AV;
 	} else {
 		v4l_err(client, "Unable to detect h/w, assuming cx23887\n");
-		ret = V4L2_IDENT_CX23887_AV;
+		ret = CX23887_AV;
 	}
 
 	/* Back into digital power down */
@@ -5153,7 +5135,7 @@ static int cx25840_probe(struct i2c_client *client,
 	struct cx25840_state *state;
 	struct v4l2_subdev *sd;
 	int default_volume;
-	u32 id = V4L2_IDENT_NONE;
+	u32 id;
 	u16 device_id;
 
 	/* Check if the adapter supports the needed features */
@@ -5169,14 +5151,14 @@ static int cx25840_probe(struct i2c_client *client,
 	/* The high byte of the device ID should be
 	 * 0x83 for the cx2583x and 0x84 for the cx2584x */
 	if ((device_id & 0xff00) == 0x8300) {
-		id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
+		id = CX25836 + ((device_id >> 4) & 0xf) - 6;
 	} else if ((device_id & 0xff00) == 0x8400) {
-		id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
+		id = CX25840 + ((device_id >> 4) & 0xf);
 	} else if (device_id == 0x0000) {
 		id = get_cx2388x_ident(client);
 	} else if ((device_id & 0xfff0) == 0x5A30) {
 		/* The CX23100 (0x5A3C = 23100) doesn't have an A/V decoder */
-		id = V4L2_IDENT_CX2310X_AV;
+		id = CX2310X_AV;
 	} else if ((device_id & 0xff) == (device_id >> 8)) {
 		v4l_err(client,
 			"likely a confused/unresponsive cx2388[578] A/V decoder"
@@ -5190,7 +5172,7 @@ static int cx25840_probe(struct i2c_client *client,
 		return -ENODEV;
 	}
 
-	state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 
@@ -5198,26 +5180,26 @@ static int cx25840_probe(struct i2c_client *client,
 	v4l2_i2c_subdev_init(sd, client, &cx25840_ops);
 
 	switch (id) {
-	case V4L2_IDENT_CX23885_AV:
+	case CX23885_AV:
 		v4l_info(client, "cx23885 A/V decoder found @ 0x%x (%s)\n",
 			 client->addr << 1, client->adapter->name);
 		break;
-	case V4L2_IDENT_CX23887_AV:
+	case CX23887_AV:
 		v4l_info(client, "cx23887 A/V decoder found @ 0x%x (%s)\n",
 			 client->addr << 1, client->adapter->name);
 		break;
-	case V4L2_IDENT_CX23888_AV:
+	case CX23888_AV:
 		v4l_info(client, "cx23888 A/V decoder found @ 0x%x (%s)\n",
 			 client->addr << 1, client->adapter->name);
 		break;
-	case V4L2_IDENT_CX2310X_AV:
+	case CX2310X_AV:
 		v4l_info(client, "cx%d A/V decoder found @ 0x%x (%s)\n",
 			 device_id, client->addr << 1, client->adapter->name);
 		break;
-	case V4L2_IDENT_CX25840:
-	case V4L2_IDENT_CX25841:
-	case V4L2_IDENT_CX25842:
-	case V4L2_IDENT_CX25843:
+	case CX25840:
+	case CX25841:
+	case CX25842:
+	case CX25843:
 		/* Note: revision '(device_id & 0x0f) == 2' was never built. The
 		   marking skips from 0x1 == 22 to 0x3 == 23. */
 		v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
@@ -5226,8 +5208,8 @@ static int cx25840_probe(struct i2c_client *client,
 						: (device_id & 0x0f),
 			 client->addr << 1, client->adapter->name);
 		break;
-	case V4L2_IDENT_CX25836:
-	case V4L2_IDENT_CX25837:
+	case CX25836:
+	case CX25837:
 	default:
 		v4l_info(client, "cx25%3x-%x found @ 0x%x (%s)\n",
 			 (device_id & 0xfff0) >> 4, device_id & 0x0f,
@@ -5292,7 +5274,6 @@ static int cx25840_probe(struct i2c_client *client,
 		int err = state->hdl.error;
 
 		v4l2_ctrl_handler_free(&state->hdl);
-		kfree(state);
 		return err;
 	}
 	if (!is_cx2583x(state))
@@ -5317,7 +5298,6 @@ static int cx25840_remove(struct i2c_client *client)
 	cx25840_ir_remove(sd);
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&state->hdl);
-	kfree(state);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/cx25840/cx25840-core.h b/drivers/media/i2c/cx25840/cx25840-core.h
index bd4ada28b49..37bc04217c4 100644
--- a/drivers/media/i2c/cx25840/cx25840-core.h
+++ b/drivers/media/i2c/cx25840/cx25840-core.h
@@ -23,12 +23,24 @@
 
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 #include <linux/i2c.h>
 
 struct cx25840_ir_state;
 
+enum cx25840_model {
+	CX23885_AV,
+	CX23887_AV,
+	CX23888_AV,
+	CX2310X_AV,
+	CX25840,
+	CX25841,
+	CX25842,
+	CX25843,
+	CX25836,
+	CX25837,
+};
+
 struct cx25840_state {
 	struct i2c_client *c;
 	struct v4l2_subdev sd;
@@ -46,7 +58,7 @@ struct cx25840_state {
 	u32 audclk_freq;
 	int audmode;
 	int vbi_line_offset;
-	u32 id;
+	enum cx25840_model id;
 	u32 rev;
 	int is_initialized;
 	wait_queue_head_t fw_wait;    /* wake up when the fw load is finished */
@@ -66,35 +78,35 @@ static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
 
 static inline bool is_cx2583x(struct cx25840_state *state)
 {
-	return state->id == V4L2_IDENT_CX25836 ||
-	       state->id == V4L2_IDENT_CX25837;
+	return state->id == CX25836 ||
+	       state->id == CX25837;
 }
 
 static inline bool is_cx231xx(struct cx25840_state *state)
 {
-	return state->id == V4L2_IDENT_CX2310X_AV;
+	return state->id == CX2310X_AV;
 }
 
 static inline bool is_cx2388x(struct cx25840_state *state)
 {
-	return state->id == V4L2_IDENT_CX23885_AV ||
-	       state->id == V4L2_IDENT_CX23887_AV ||
-	       state->id == V4L2_IDENT_CX23888_AV;
+	return state->id == CX23885_AV ||
+	       state->id == CX23887_AV ||
+	       state->id == CX23888_AV;
 }
 
 static inline bool is_cx23885(struct cx25840_state *state)
 {
-	return state->id == V4L2_IDENT_CX23885_AV;
+	return state->id == CX23885_AV;
 }
 
 static inline bool is_cx23887(struct cx25840_state *state)
 {
-	return state->id == V4L2_IDENT_CX23887_AV;
+	return state->id == CX23887_AV;
 }
 
 static inline bool is_cx23888(struct cx25840_state *state)
 {
-	return state->id == V4L2_IDENT_CX23888_AV;
+	return state->id == CX23888_AV;
 }
 
 /* ----------------------------------------------------------------------- */
diff --git a/drivers/media/i2c/cx25840/cx25840-ir.c b/drivers/media/i2c/cx25840/cx25840-ir.c
index 9ae977b5983..e6588ee5bdb 100644
--- a/drivers/media/i2c/cx25840/cx25840-ir.c
+++ b/drivers/media/i2c/cx25840/cx25840-ir.c
@@ -1230,16 +1230,14 @@ int cx25840_ir_probe(struct v4l2_subdev *sd)
 	if (!(is_cx23885(state) || is_cx23887(state)))
 		return 0;
 
-	ir_state = kzalloc(sizeof(struct cx25840_ir_state), GFP_KERNEL);
+	ir_state = devm_kzalloc(&state->c->dev, sizeof(*ir_state), GFP_KERNEL);
 	if (ir_state == NULL)
 		return -ENOMEM;
 
 	spin_lock_init(&ir_state->rx_kfifo_lock);
 	if (kfifo_alloc(&ir_state->rx_kfifo,
-			CX25840_IR_RX_KFIFO_SIZE, GFP_KERNEL)) {
-		kfree(ir_state);
+			CX25840_IR_RX_KFIFO_SIZE, GFP_KERNEL))
 		return -ENOMEM;
-	}
 
 	ir_state->c = state->c;
 	state->ir_state = ir_state;
@@ -1273,7 +1271,6 @@ int cx25840_ir_remove(struct v4l2_subdev *sd)
 	cx25840_ir_tx_shutdown(sd);
 
 	kfifo_free(&ir_state->rx_kfifo);
-	kfree(ir_state);
 	state->ir_state = NULL;
 	return 0;
 }
diff --git a/drivers/media/i2c/ir-kbd-i2c.c b/drivers/media/i2c/ir-kbd-i2c.c
index 8e2f79cb045..82bf5679da3 100644
--- a/drivers/media/i2c/ir-kbd-i2c.c
+++ b/drivers/media/i2c/ir-kbd-i2c.c
@@ -295,7 +295,7 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	unsigned short addr = client->addr;
 	int err;
 
-	ir = kzalloc(sizeof(struct IR_i2c), GFP_KERNEL);
+	ir = devm_kzalloc(&client->dev, sizeof(*ir), GFP_KERNEL);
 	if (!ir)
 		return -ENOMEM;
 
@@ -398,10 +398,8 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
 		 * internally
 		 */
 		rc = rc_allocate_device();
-		if (!rc) {
-			err = -ENOMEM;
-			goto err_out_free;
-		}
+		if (!rc)
+			return -ENOMEM;
 	}
 	ir->rc = rc;
 
@@ -454,7 +452,6 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
  err_out_free:
 	/* Only frees rc if it were allocated internally */
 	rc_free_device(rc);
-	kfree(ir);
 	return err;
 }
 
@@ -470,7 +467,6 @@ static int ir_remove(struct i2c_client *client)
 		rc_unregister_device(ir->rc);
 
 	/* free memory */
-	kfree(ir);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/ks0127.c b/drivers/media/i2c/ks0127.c
index 04a6efa37cc..c3e94ae82c0 100644
--- a/drivers/media/i2c/ks0127.c
+++ b/drivers/media/i2c/ks0127.c
@@ -42,7 +42,6 @@
 #include <linux/videodev2.h>
 #include <linux/slab.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include "ks0127.h"
 
 MODULE_DESCRIPTION("KS0127 video decoder driver");
@@ -200,7 +199,6 @@ struct adjust {
 struct ks0127 {
 	struct v4l2_subdev sd;
 	v4l2_std_id	norm;
-	int		ident;
 	u8 		regs[256];
 };
 
@@ -371,12 +369,9 @@ static void ks0127_and_or(struct v4l2_subdev *sd, u8 reg, u8 and_v, u8 or_v)
 ****************************************************************************/
 static void ks0127_init(struct v4l2_subdev *sd)
 {
-	struct ks0127 *ks = to_ks0127(sd);
 	u8 *table = reg_defaults;
 	int i;
 
-	ks->ident = V4L2_IDENT_KS0127;
-
 	v4l2_dbg(1, debug, sd, "reset\n");
 	msleep(1);
 
@@ -397,7 +392,6 @@ static void ks0127_init(struct v4l2_subdev *sd)
 
 
 	if ((ks0127_read(sd, KS_STAT) & 0x80) == 0) {
-		ks->ident = V4L2_IDENT_KS0122S;
 		v4l2_dbg(1, debug, sd, "ks0122s found\n");
 		return;
 	}
@@ -408,7 +402,6 @@ static void ks0127_init(struct v4l2_subdev *sd)
 		break;
 
 	case 9:
-		ks->ident = V4L2_IDENT_KS0127B;
 		v4l2_dbg(1, debug, sd, "ks0127B Revision A found\n");
 		break;
 
@@ -616,17 +609,24 @@ static int ks0127_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd
 {
 	int stat = V4L2_IN_ST_NO_SIGNAL;
 	u8 status;
-	v4l2_std_id std = V4L2_STD_ALL;
+	v4l2_std_id std = pstd ? *pstd : V4L2_STD_ALL;
 
 	status = ks0127_read(sd, KS_STAT);
 	if (!(status & 0x20))		 /* NOVID not set */
 		stat = 0;
-	if (!(status & 0x01))		      /* CLOCK set */
+	if (!(status & 0x01)) {		      /* CLOCK set */
 		stat |= V4L2_IN_ST_NO_COLOR;
-	if ((status & 0x08))		   /* PALDET set */
-		std = V4L2_STD_PAL;
+		std = V4L2_STD_UNKNOWN;
+	} else {
+		if ((status & 0x08))		   /* PALDET set */
+			std &= V4L2_STD_PAL;
+		else
+			std &= V4L2_STD_NTSC;
+	}
+	if ((status & 0x10))		   /* PALDET set */
+		std &= V4L2_STD_525_60;
 	else
-		std = V4L2_STD_NTSC;
+		std &= V4L2_STD_625_50;
 	if (pstd)
 		*pstd = std;
 	if (pstatus)
@@ -646,18 +646,9 @@ static int ks0127_g_input_status(struct v4l2_subdev *sd, u32 *status)
 	return ks0127_status(sd, status, NULL);
 }
 
-static int ks0127_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-	struct ks0127 *ks = to_ks0127(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, ks->ident, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_subdev_core_ops ks0127_core_ops = {
-	.g_chip_ident = ks0127_g_chip_ident,
 	.s_std = ks0127_s_std,
 };
 
@@ -685,7 +676,7 @@ static int ks0127_probe(struct i2c_client *client, const struct i2c_device_id *i
 		client->addr == (I2C_KS0127_ADDON >> 1) ? "addon" : "on-board",
 		client->addr << 1, client->adapter->name);
 
-	ks = kzalloc(sizeof(*ks), GFP_KERNEL);
+	ks = devm_kzalloc(&client->dev, sizeof(*ks), GFP_KERNEL);
 	if (ks == NULL)
 		return -ENOMEM;
 	sd = &ks->sd;
@@ -708,7 +699,6 @@ static int ks0127_remove(struct i2c_client *client)
 	v4l2_device_unregister_subdev(sd);
 	ks0127_write(sd, KS_OFMTA, 0x20); /* tristate */
 	ks0127_write(sd, KS_CMDA, 0x2c | 0x80); /* power down */
-	kfree(to_ks0127(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/m52790.c b/drivers/media/i2c/m52790.c
index 39f50fd2b8d..bf476358704 100644
--- a/drivers/media/i2c/m52790.c
+++ b/drivers/media/i2c/m52790.c
@@ -29,7 +29,6 @@
 #include <linux/videodev2.h>
 #include <media/m52790.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 
 MODULE_DESCRIPTION("i2c device driver for m52790 A/V switch");
 MODULE_AUTHOR("Hans Verkuil");
@@ -83,12 +82,7 @@ static int m52790_s_routing(struct v4l2_subdev *sd,
 static int m52790_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
 	struct m52790_state *state = to_state(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	if (reg->reg != 0)
 		return -EINVAL;
 	reg->size = 1;
@@ -99,12 +93,7 @@ static int m52790_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *r
 static int m52790_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
 	struct m52790_state *state = to_state(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	if (reg->reg != 0)
 		return -EINVAL;
 	state->input = reg->val & 0x0303;
@@ -114,13 +103,6 @@ static int m52790_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_regis
 }
 #endif
 
-static int m52790_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_M52790, 0);
-}
-
 static int m52790_log_status(struct v4l2_subdev *sd)
 {
 	struct m52790_state *state = to_state(sd);
@@ -136,7 +118,6 @@ static int m52790_log_status(struct v4l2_subdev *sd)
 
 static const struct v4l2_subdev_core_ops m52790_core_ops = {
 	.log_status = m52790_log_status,
-	.g_chip_ident = m52790_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = m52790_g_register,
 	.s_register = m52790_s_register,
@@ -174,7 +155,7 @@ static int m52790_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct m52790_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 
@@ -191,7 +172,6 @@ static int m52790_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_state(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c
index 0b899cb6cda..8d870b7b43f 100644
--- a/drivers/media/i2c/m5mols/m5mols_core.c
+++ b/drivers/media/i2c/m5mols/m5mols_core.c
@@ -930,6 +930,7 @@ static int m5mols_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
 	const struct m5mols_platform_data *pdata = client->dev.platform_data;
+	unsigned long gpio_flags;
 	struct m5mols_info *info;
 	struct v4l2_subdev *sd;
 	int ret;
@@ -949,24 +950,27 @@ static int m5mols_probe(struct i2c_client *client,
 		return -EINVAL;
 	}
 
-	info = kzalloc(sizeof(struct m5mols_info), GFP_KERNEL);
+	info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
 
 	info->pdata = pdata;
 	info->set_power	= pdata->set_power;
 
-	ret = gpio_request(pdata->gpio_reset, "M5MOLS_NRST");
+	gpio_flags = pdata->reset_polarity
+		   ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
+	ret = devm_gpio_request_one(&client->dev, pdata->gpio_reset, gpio_flags,
+				    "M5MOLS_NRST");
 	if (ret) {
 		dev_err(&client->dev, "Failed to request gpio: %d\n", ret);
-		goto out_free;
+		return ret;
 	}
-	gpio_direction_output(pdata->gpio_reset, pdata->reset_polarity);
 
-	ret = regulator_bulk_get(&client->dev, ARRAY_SIZE(supplies), supplies);
+	ret = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(supplies),
+				      supplies);
 	if (ret) {
 		dev_err(&client->dev, "Failed to get regulators: %d\n", ret);
-		goto out_gpio;
+		return ret;
 	}
 
 	sd = &info->sd;
@@ -978,17 +982,17 @@ static int m5mols_probe(struct i2c_client *client,
 	info->pad.flags = MEDIA_PAD_FL_SOURCE;
 	ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
 	if (ret < 0)
-		goto out_reg;
+		return ret;
 	sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
 
 	init_waitqueue_head(&info->irq_waitq);
 	mutex_init(&info->lock);
 
-	ret = request_irq(client->irq, m5mols_irq_handler,
-			  IRQF_TRIGGER_RISING, MODULE_NAME, sd);
+	ret = devm_request_irq(&client->dev, client->irq, m5mols_irq_handler,
+			       IRQF_TRIGGER_RISING, MODULE_NAME, sd);
 	if (ret) {
 		dev_err(&client->dev, "Interrupt request failed: %d\n", ret);
-		goto out_me;
+		goto error;
 	}
 	info->res_type = M5MOLS_RESTYPE_MONITOR;
 	info->ffmt[0] = m5mols_default_ffmt[0];
@@ -996,7 +1000,7 @@ static int m5mols_probe(struct i2c_client *client,
 
 	ret = m5mols_sensor_power(info, true);
 	if (ret)
-		goto out_irq;
+		goto error;
 
 	ret = m5mols_fw_start(sd);
 	if (!ret)
@@ -1005,32 +1009,19 @@ static int m5mols_probe(struct i2c_client *client,
 	ret = m5mols_sensor_power(info, false);
 	if (!ret)
 		return 0;
-out_irq:
-	free_irq(client->irq, sd);
-out_me:
+error:
 	media_entity_cleanup(&sd->entity);
-out_reg:
-	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
-out_gpio:
-	gpio_free(pdata->gpio_reset);
-out_free:
-	kfree(info);
 	return ret;
 }
 
 static int m5mols_remove(struct i2c_client *client)
 {
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct m5mols_info *info = to_m5mols(sd);
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(sd->ctrl_handler);
-	free_irq(client->irq, sd);
-
-	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
-	gpio_free(info->pdata->gpio_reset);
 	media_entity_cleanup(&sd->entity);
-	kfree(info);
+
 	return 0;
 }
 
diff --git a/drivers/media/i2c/ml86v7667.c b/drivers/media/i2c/ml86v7667.c
new file mode 100644
index 00000000000..efdc873e58d
--- /dev/null
+++ b/drivers/media/i2c/ml86v7667.c
@@ -0,0 +1,431 @@
+/*
+ * OKI Semiconductor ML86V7667 video decoder driver
+ *
+ * Author: Vladimir Barinov <source@cogentembedded.com>
+ * Copyright (C) 2013 Cogent Embedded, Inc.
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-subdev.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+
+#define DRV_NAME "ml86v7667"
+
+/* Subaddresses */
+#define MRA_REG			0x00 /* Mode Register A */
+#define MRC_REG			0x02 /* Mode Register C */
+#define LUMC_REG		0x0C /* Luminance Control */
+#define CLC_REG			0x10 /* Contrast level control */
+#define SSEPL_REG		0x11 /* Sync separation level */
+#define CHRCA_REG		0x12 /* Chrominance Control A */
+#define ACCC_REG		0x14 /* ACC Loop filter & Chrominance control */
+#define ACCRC_REG		0x15 /* ACC Reference level control */
+#define HUE_REG			0x16 /* Hue control */
+#define ADC2_REG		0x1F /* ADC Register 2 */
+#define PLLR1_REG		0x20 /* PLL Register 1 */
+#define STATUS_REG		0x2C /* STATUS Register */
+
+/* Mode Register A register bits */
+#define MRA_OUTPUT_MODE_MASK	(3 << 6)
+#define MRA_ITUR_BT601		(1 << 6)
+#define MRA_ITUR_BT656		(0 << 6)
+#define MRA_INPUT_MODE_MASK	(7 << 3)
+#define MRA_PAL_BT601		(4 << 3)
+#define MRA_NTSC_BT601		(0 << 3)
+#define MRA_REGISTER_MODE	(1 << 0)
+
+/* Mode Register C register bits */
+#define MRC_AUTOSELECT		(1 << 7)
+
+/* Luminance Control register bits */
+#define LUMC_ONOFF_SHIFT	7
+#define LUMC_ONOFF_MASK		(1 << 7)
+
+/* Contrast level control register bits */
+#define CLC_CONTRAST_ONOFF	(1 << 7)
+#define CLC_CONTRAST_MASK	0x0F
+
+/* Sync separation level register bits */
+#define SSEPL_LUMINANCE_ONOFF	(1 << 7)
+#define SSEPL_LUMINANCE_MASK	0x7F
+
+/* Chrominance Control A register bits */
+#define CHRCA_MODE_SHIFT	6
+#define CHRCA_MODE_MASK		(1 << 6)
+
+/* ACC Loop filter & Chrominance control register bits */
+#define ACCC_CHROMA_CR_SHIFT	3
+#define ACCC_CHROMA_CR_MASK	(7 << 3)
+#define ACCC_CHROMA_CB_SHIFT	0
+#define ACCC_CHROMA_CB_MASK	(7 << 0)
+
+/* ACC Reference level control register bits */
+#define ACCRC_CHROMA_MASK	0xfc
+#define ACCRC_CHROMA_SHIFT	2
+
+/* ADC Register 2 register bits */
+#define ADC2_CLAMP_VOLTAGE_MASK	(7 << 1)
+#define ADC2_CLAMP_VOLTAGE(n)	((n & 7) << 1)
+
+/* PLL Register 1 register bits */
+#define PLLR1_FIXED_CLOCK	(1 << 7)
+
+/* STATUS Register register bits */
+#define STATUS_HLOCK_DETECT	(1 << 3)
+#define STATUS_NTSCPAL		(1 << 2)
+
+struct ml86v7667_priv {
+	struct v4l2_subdev		sd;
+	struct v4l2_ctrl_handler	hdl;
+	v4l2_std_id			std;
+};
+
+static inline struct ml86v7667_priv *to_ml86v7667(struct v4l2_subdev *subdev)
+{
+	return container_of(subdev, struct ml86v7667_priv, sd);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+	return &container_of(ctrl->handler, struct ml86v7667_priv, hdl)->sd;
+}
+
+static int ml86v7667_mask_set(struct i2c_client *client, const u8 reg,
+			      const u8 mask, const u8 data)
+{
+	int val = i2c_smbus_read_byte_data(client, reg);
+	if (val < 0)
+		return val;
+
+	val = (val & ~mask) | (data & mask);
+	return i2c_smbus_write_byte_data(client, reg, val);
+}
+
+static int ml86v7667_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = to_sd(ctrl);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int ret;
+
+	switch (ctrl->id) {
+	case V4L2_CID_BRIGHTNESS:
+		ret = ml86v7667_mask_set(client, SSEPL_REG,
+					 SSEPL_LUMINANCE_MASK, ctrl->val);
+		break;
+	case V4L2_CID_CONTRAST:
+		ret = ml86v7667_mask_set(client, CLC_REG,
+					 CLC_CONTRAST_MASK, ctrl->val);
+		break;
+	case V4L2_CID_CHROMA_GAIN:
+		ret = ml86v7667_mask_set(client, ACCRC_REG, ACCRC_CHROMA_MASK,
+					 ctrl->val << ACCRC_CHROMA_SHIFT);
+		break;
+	case V4L2_CID_HUE:
+		ret = ml86v7667_mask_set(client, HUE_REG, ~0, ctrl->val);
+		break;
+	case V4L2_CID_RED_BALANCE:
+		ret = ml86v7667_mask_set(client, ACCC_REG,
+					 ACCC_CHROMA_CR_MASK,
+					 ctrl->val << ACCC_CHROMA_CR_SHIFT);
+		break;
+	case V4L2_CID_BLUE_BALANCE:
+		ret = ml86v7667_mask_set(client, ACCC_REG,
+					 ACCC_CHROMA_CB_MASK,
+					 ctrl->val << ACCC_CHROMA_CB_SHIFT);
+		break;
+	case V4L2_CID_SHARPNESS:
+		ret = ml86v7667_mask_set(client, LUMC_REG,
+					 LUMC_ONOFF_MASK,
+					 ctrl->val << LUMC_ONOFF_SHIFT);
+		break;
+	case V4L2_CID_COLOR_KILLER:
+		ret = ml86v7667_mask_set(client, CHRCA_REG,
+					 CHRCA_MODE_MASK,
+					 ctrl->val << CHRCA_MODE_SHIFT);
+		break;
+	}
+
+	return 0;
+}
+
+static int ml86v7667_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int status;
+
+	status = i2c_smbus_read_byte_data(client, STATUS_REG);
+	if (status < 0)
+		return status;
+
+	if (status & STATUS_HLOCK_DETECT)
+		*std &= status & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
+	else
+		*std = V4L2_STD_UNKNOWN;
+
+	return 0;
+}
+
+static int ml86v7667_g_input_status(struct v4l2_subdev *sd, u32 *status)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int status_reg;
+
+	status_reg = i2c_smbus_read_byte_data(client, STATUS_REG);
+	if (status_reg < 0)
+		return status_reg;
+
+	*status = status_reg & STATUS_HLOCK_DETECT ? 0 : V4L2_IN_ST_NO_SIGNAL;
+
+	return 0;
+}
+
+static int ml86v7667_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index,
+				   enum v4l2_mbus_pixelcode *code)
+{
+	if (index > 0)
+		return -EINVAL;
+
+	*code = V4L2_MBUS_FMT_YUYV8_2X8;
+
+	return 0;
+}
+
+static int ml86v7667_mbus_fmt(struct v4l2_subdev *sd,
+			      struct v4l2_mbus_framefmt *fmt)
+{
+	struct ml86v7667_priv *priv = to_ml86v7667(sd);
+
+	fmt->code = V4L2_MBUS_FMT_YUYV8_2X8;
+	fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
+	fmt->field = V4L2_FIELD_INTERLACED;
+	fmt->width = 720;
+	fmt->height = priv->std & V4L2_STD_525_60 ? 480 : 576;
+
+	return 0;
+}
+
+static int ml86v7667_g_mbus_config(struct v4l2_subdev *sd,
+				   struct v4l2_mbus_config *cfg)
+{
+	cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
+		     V4L2_MBUS_DATA_ACTIVE_HIGH;
+	cfg->type = V4L2_MBUS_BT656;
+
+	return 0;
+}
+
+static int ml86v7667_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+	struct ml86v7667_priv *priv = to_ml86v7667(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
+	int ret;
+	u8 mode;
+
+	/* PAL/NTSC ITU-R BT.601 input mode */
+	mode = std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
+	ret = ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, mode);
+	if (ret < 0)
+		return ret;
+
+	priv->std = std;
+
+	return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int ml86v7667_g_register(struct v4l2_subdev *sd,
+				struct v4l2_dbg_register *reg)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(client, (u8)reg->reg);
+	if (ret < 0)
+		return ret;
+
+	reg->val = ret;
+	reg->size = sizeof(u8);
+
+	return 0;
+}
+
+static int ml86v7667_s_register(struct v4l2_subdev *sd,
+				const struct v4l2_dbg_register *reg)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+	return i2c_smbus_write_byte_data(client, (u8)reg->reg, (u8)reg->val);
+}
+#endif
+
+static const struct v4l2_ctrl_ops ml86v7667_ctrl_ops = {
+	.s_ctrl = ml86v7667_s_ctrl,
+};
+
+static struct v4l2_subdev_video_ops ml86v7667_subdev_video_ops = {
+	.querystd = ml86v7667_querystd,
+	.g_input_status = ml86v7667_g_input_status,
+	.enum_mbus_fmt = ml86v7667_enum_mbus_fmt,
+	.try_mbus_fmt = ml86v7667_mbus_fmt,
+	.g_mbus_fmt = ml86v7667_mbus_fmt,
+	.s_mbus_fmt = ml86v7667_mbus_fmt,
+	.g_mbus_config = ml86v7667_g_mbus_config,
+};
+
+static struct v4l2_subdev_core_ops ml86v7667_subdev_core_ops = {
+	.s_std = ml86v7667_s_std,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	.g_register = ml86v7667_g_register,
+	.s_register = ml86v7667_s_register,
+#endif
+};
+
+static struct v4l2_subdev_ops ml86v7667_subdev_ops = {
+	.core = &ml86v7667_subdev_core_ops,
+	.video = &ml86v7667_subdev_video_ops,
+};
+
+static int ml86v7667_init(struct ml86v7667_priv *priv)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
+	int val;
+	int ret;
+
+	/* BT.656-4 output mode, register mode */
+	ret = ml86v7667_mask_set(client, MRA_REG,
+				 MRA_OUTPUT_MODE_MASK | MRA_REGISTER_MODE,
+				 MRA_ITUR_BT656 | MRA_REGISTER_MODE);
+
+	/* PLL circuit fixed clock, 32MHz */
+	ret |= ml86v7667_mask_set(client, PLLR1_REG, PLLR1_FIXED_CLOCK,
+				  PLLR1_FIXED_CLOCK);
+
+	/* ADC2 clamping voltage maximum  */
+	ret |= ml86v7667_mask_set(client, ADC2_REG, ADC2_CLAMP_VOLTAGE_MASK,
+				  ADC2_CLAMP_VOLTAGE(7));
+
+	/* enable luminance function */
+	ret |= ml86v7667_mask_set(client, SSEPL_REG, SSEPL_LUMINANCE_ONOFF,
+				  SSEPL_LUMINANCE_ONOFF);
+
+	/* enable contrast function */
+	ret |= ml86v7667_mask_set(client, CLC_REG, CLC_CONTRAST_ONOFF, 0);
+
+	/*
+	 * PAL/NTSC autodetection is enabled after reset,
+	 * set the autodetected std in manual std mode and
+	 * disable autodetection
+	 */
+	val = i2c_smbus_read_byte_data(client, STATUS_REG);
+	if (val < 0)
+		return val;
+
+	priv->std = val & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
+	ret |= ml86v7667_mask_set(client, MRC_REG, MRC_AUTOSELECT, 0);
+
+	val = priv->std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
+	ret |= ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, val);
+
+	return ret;
+}
+
+static int ml86v7667_probe(struct i2c_client *client,
+			   const struct i2c_device_id *did)
+{
+	struct ml86v7667_priv *priv;
+	int ret;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+		return -EIO;
+
+	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	v4l2_i2c_subdev_init(&priv->sd, client, &ml86v7667_subdev_ops);
+
+	v4l2_ctrl_handler_init(&priv->hdl, 8);
+	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
+			  V4L2_CID_BRIGHTNESS, -64, 63, 1, 0);
+	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
+			  V4L2_CID_CONTRAST, -8, 7, 1, 0);
+	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
+			  V4L2_CID_CHROMA_GAIN, -32, 31, 1, 0);
+	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
+			  V4L2_CID_HUE, -128, 127, 1, 0);
+	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
+			  V4L2_CID_RED_BALANCE, -4, 3, 1, 0);
+	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
+			  V4L2_CID_BLUE_BALANCE, -4, 3, 1, 0);
+	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
+			  V4L2_CID_SHARPNESS, 0, 1, 1, 0);
+	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
+			  V4L2_CID_COLOR_KILLER, 0, 1, 1, 0);
+	priv->sd.ctrl_handler = &priv->hdl;
+
+	ret = priv->hdl.error;
+	if (ret)
+		goto cleanup;
+
+	v4l2_ctrl_handler_setup(&priv->hdl);
+
+	ret = ml86v7667_init(priv);
+	if (ret)
+		goto cleanup;
+
+	v4l_info(client, "chip found @ 0x%02x (%s)\n",
+		 client->addr, client->adapter->name);
+	return 0;
+
+cleanup:
+	v4l2_ctrl_handler_free(&priv->hdl);
+	v4l2_device_unregister_subdev(&priv->sd);
+	v4l_err(client, "failed to probe @ 0x%02x (%s)\n",
+		client->addr, client->adapter->name);
+	return ret;
+}
+
+static int ml86v7667_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct ml86v7667_priv *priv = to_ml86v7667(sd);
+
+	v4l2_ctrl_handler_free(&priv->hdl);
+	v4l2_device_unregister_subdev(&priv->sd);
+
+	return 0;
+}
+
+static const struct i2c_device_id ml86v7667_id[] = {
+	{DRV_NAME, 0},
+	{},
+};
+MODULE_DEVICE_TABLE(i2c, ml86v7667_id);
+
+static struct i2c_driver ml86v7667_i2c_driver = {
+	.driver = {
+		.name	= DRV_NAME,
+		.owner	= THIS_MODULE,
+	},
+	.probe		= ml86v7667_probe,
+	.remove		= ml86v7667_remove,
+	.id_table	= ml86v7667_id,
+};
+
+module_i2c_driver(ml86v7667_i2c_driver);
+
+MODULE_DESCRIPTION("OKI Semiconductor ML86V7667 video decoder driver");
+MODULE_AUTHOR("Vladimir Barinov");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/i2c/msp3400-driver.c b/drivers/media/i2c/msp3400-driver.c
index 54a9dd394f4..8190fec6808 100644
--- a/drivers/media/i2c/msp3400-driver.c
+++ b/drivers/media/i2c/msp3400-driver.c
@@ -570,15 +570,6 @@ static int msp_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
 	return 0;
 }
 
-static int msp_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct msp_state *state = to_state(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, state->ident,
-			(state->rev1 << 16) | state->rev2);
-}
-
 static int msp_log_status(struct v4l2_subdev *sd)
 {
 	struct msp_state *state = to_state(sd);
@@ -651,7 +642,6 @@ static const struct v4l2_ctrl_ops msp_ctrl_ops = {
 
 static const struct v4l2_subdev_core_ops msp_core_ops = {
 	.log_status = msp_log_status,
-	.g_chip_ident = msp_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -707,7 +697,7 @@ static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
 		return -ENODEV;
 	}
 
-	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (!state)
 		return -ENOMEM;
 
@@ -732,7 +722,6 @@ static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
 		v4l_dbg(1, msp_debug, client,
 				"not an msp3400 (cannot read chip version)\n");
-		kfree(state);
 		return -ENODEV;
 	}
 
@@ -827,7 +816,6 @@ static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
 		int err = hdl->error;
 
 		v4l2_ctrl_handler_free(hdl);
-		kfree(state);
 		return err;
 	}
 
@@ -889,7 +877,6 @@ static int msp_remove(struct i2c_client *client)
 	msp_reset(client);
 
 	v4l2_ctrl_handler_free(&state->hdl);
-	kfree(state);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/mt9m032.c b/drivers/media/i2c/mt9m032.c
index 8edb3d8f7b9..846b15f0bf6 100644
--- a/drivers/media/i2c/mt9m032.c
+++ b/drivers/media/i2c/mt9m032.c
@@ -554,10 +554,8 @@ static int mt9m032_g_register(struct v4l2_subdev *sd,
 	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
 	int val;
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+	if (reg->reg > 0xff)
 		return -EINVAL;
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
 
 	val = mt9m032_read(client, reg->reg);
 	if (val < 0)
@@ -575,12 +573,9 @@ static int mt9m032_s_register(struct v4l2_subdev *sd,
 	struct mt9m032 *sensor = to_mt9m032(sd);
 	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+	if (reg->reg > 0xff)
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
 	return mt9m032_write(client, reg->reg, reg->val);
 }
 #endif
@@ -730,7 +725,7 @@ static int mt9m032_probe(struct i2c_client *client,
 	if (!client->dev.platform_data)
 		return -ENODEV;
 
-	sensor = kzalloc(sizeof(*sensor), GFP_KERNEL);
+	sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
 	if (sensor == NULL)
 		return -ENOMEM;
 
@@ -860,7 +855,6 @@ error_ctrl:
 	v4l2_ctrl_handler_free(&sensor->ctrls);
 error_sensor:
 	mutex_destroy(&sensor->lock);
-	kfree(sensor);
 	return ret;
 }
 
@@ -873,7 +867,6 @@ static int mt9m032_remove(struct i2c_client *client)
 	v4l2_ctrl_handler_free(&sensor->ctrls);
 	media_entity_cleanup(&subdev->entity);
 	mutex_destroy(&sensor->lock);
-	kfree(sensor);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c
index 28cf95b3728..4734836fe5a 100644
--- a/drivers/media/i2c/mt9p031.c
+++ b/drivers/media/i2c/mt9p031.c
@@ -16,18 +16,19 @@
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/gpio.h>
-#include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/log2.h>
+#include <linux/module.h>
+#include <linux/of_gpio.h>
 #include <linux/pm.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <linux/videodev2.h>
 
 #include <media/mt9p031.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-device.h>
+#include <media/v4l2-of.h>
 #include <media/v4l2-subdev.h>
 
 #include "aptina-pll.h"
@@ -124,9 +125,7 @@ struct mt9p031 {
 	int power_count;
 
 	struct clk *clk;
-	struct regulator *vaa;
-	struct regulator *vdd;
-	struct regulator *vdd_io;
+	struct regulator_bulk_data regulators[3];
 
 	enum mt9p031_model model;
 	struct aptina_pll pll;
@@ -271,23 +270,26 @@ static inline int mt9p031_pll_disable(struct mt9p031 *mt9p031)
 
 static int mt9p031_power_on(struct mt9p031 *mt9p031)
 {
+	int ret;
+
 	/* Ensure RESET_BAR is low */
-	if (mt9p031->reset != -1) {
+	if (gpio_is_valid(mt9p031->reset)) {
 		gpio_set_value(mt9p031->reset, 0);
 		usleep_range(1000, 2000);
 	}
 
 	/* Bring up the supplies */
-	regulator_enable(mt9p031->vdd);
-	regulator_enable(mt9p031->vdd_io);
-	regulator_enable(mt9p031->vaa);
+	ret = regulator_bulk_enable(ARRAY_SIZE(mt9p031->regulators),
+				   mt9p031->regulators);
+	if (ret < 0)
+		return ret;
 
 	/* Emable clock */
 	if (mt9p031->clk)
 		clk_prepare_enable(mt9p031->clk);
 
 	/* Now RESET_BAR must be high */
-	if (mt9p031->reset != -1) {
+	if (gpio_is_valid(mt9p031->reset)) {
 		gpio_set_value(mt9p031->reset, 1);
 		usleep_range(1000, 2000);
 	}
@@ -297,14 +299,13 @@ static int mt9p031_power_on(struct mt9p031 *mt9p031)
 
 static void mt9p031_power_off(struct mt9p031 *mt9p031)
 {
-	if (mt9p031->reset != -1) {
+	if (gpio_is_valid(mt9p031->reset)) {
 		gpio_set_value(mt9p031->reset, 0);
 		usleep_range(1000, 2000);
 	}
 
-	regulator_disable(mt9p031->vaa);
-	regulator_disable(mt9p031->vdd_io);
-	regulator_disable(mt9p031->vdd);
+	regulator_bulk_disable(ARRAY_SIZE(mt9p031->regulators),
+			       mt9p031->regulators);
 
 	if (mt9p031->clk)
 		clk_disable_unprepare(mt9p031->clk);
@@ -849,18 +850,18 @@ static int mt9p031_registered(struct v4l2_subdev *subdev)
 
 	/* Read out the chip version register */
 	data = mt9p031_read(client, MT9P031_CHIP_VERSION);
+	mt9p031_power_off(mt9p031);
+
 	if (data != MT9P031_CHIP_VERSION_VALUE) {
 		dev_err(&client->dev, "MT9P031 not detected, wrong version "
 			"0x%04x\n", data);
 		return -ENODEV;
 	}
 
-	mt9p031_power_off(mt9p031);
-
 	dev_info(&client->dev, "MT9P031 detected at address 0x%02x\n",
 		 client->addr);
 
-	return ret;
+	return 0;
 }
 
 static int mt9p031_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
@@ -928,10 +929,36 @@ static const struct v4l2_subdev_internal_ops mt9p031_subdev_internal_ops = {
  * Driver initialization and probing
  */
 
+static struct mt9p031_platform_data *
+mt9p031_get_pdata(struct i2c_client *client)
+{
+	struct mt9p031_platform_data *pdata;
+	struct device_node *np;
+
+	if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
+		return client->dev.platform_data;
+
+	np = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
+	if (!np)
+		return NULL;
+
+	pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		goto done;
+
+	pdata->reset = of_get_named_gpio(client->dev.of_node, "reset-gpios", 0);
+	of_property_read_u32(np, "input-clock-frequency", &pdata->ext_freq);
+	of_property_read_u32(np, "pixel-clock-frequency", &pdata->target_freq);
+
+done:
+	of_node_put(np);
+	return pdata;
+}
+
 static int mt9p031_probe(struct i2c_client *client,
 			 const struct i2c_device_id *did)
 {
-	struct mt9p031_platform_data *pdata = client->dev.platform_data;
+	struct mt9p031_platform_data *pdata = mt9p031_get_pdata(client);
 	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
 	struct mt9p031 *mt9p031;
 	unsigned int i;
@@ -958,14 +985,14 @@ static int mt9p031_probe(struct i2c_client *client,
 	mt9p031->model = did->driver_data;
 	mt9p031->reset = -1;
 
-	mt9p031->vaa = devm_regulator_get(&client->dev, "vaa");
-	mt9p031->vdd = devm_regulator_get(&client->dev, "vdd");
-	mt9p031->vdd_io = devm_regulator_get(&client->dev, "vdd_io");
+	mt9p031->regulators[0].supply = "vdd";
+	mt9p031->regulators[1].supply = "vdd_io";
+	mt9p031->regulators[2].supply = "vaa";
 
-	if (IS_ERR(mt9p031->vaa) || IS_ERR(mt9p031->vdd) ||
-	    IS_ERR(mt9p031->vdd_io)) {
+	ret = devm_regulator_bulk_get(&client->dev, 3, mt9p031->regulators);
+	if (ret < 0) {
 		dev_err(&client->dev, "Unable to get regulators\n");
-		return -ENODEV;
+		return ret;
 	}
 
 	v4l2_ctrl_handler_init(&mt9p031->ctrls, ARRAY_SIZE(mt9p031_ctrls) + 6);
@@ -1031,7 +1058,7 @@ static int mt9p031_probe(struct i2c_client *client,
 	mt9p031->format.field = V4L2_FIELD_NONE;
 	mt9p031->format.colorspace = V4L2_COLORSPACE_SRGB;
 
-	if (pdata->reset != -1) {
+	if (gpio_is_valid(pdata->reset)) {
 		ret = devm_gpio_request_one(&client->dev, pdata->reset,
 					    GPIOF_OUT_INIT_LOW, "mt9p031_rst");
 		if (ret < 0)
@@ -1070,8 +1097,18 @@ static const struct i2c_device_id mt9p031_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, mt9p031_id);
 
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id mt9p031_of_match[] = {
+	{ .compatible = "aptina,mt9p031", },
+	{ .compatible = "aptina,mt9p031m", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, mt9p031_of_match);
+#endif
+
 static struct i2c_driver mt9p031_i2c_driver = {
 	.driver = {
+		.of_match_table = of_match_ptr(mt9p031_of_match),
 		.name = "mt9p031",
 	},
 	.probe          = mt9p031_probe,
diff --git a/drivers/media/i2c/mt9t001.c b/drivers/media/i2c/mt9t001.c
index 2e189d8b71b..796463466ef 100644
--- a/drivers/media/i2c/mt9t001.c
+++ b/drivers/media/i2c/mt9t001.c
@@ -740,7 +740,7 @@ static int mt9t001_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
-	mt9t001 = kzalloc(sizeof(*mt9t001), GFP_KERNEL);
+	mt9t001 = devm_kzalloc(&client->dev, sizeof(*mt9t001), GFP_KERNEL);
 	if (!mt9t001)
 		return -ENOMEM;
 
@@ -801,7 +801,6 @@ done:
 	if (ret < 0) {
 		v4l2_ctrl_handler_free(&mt9t001->ctrls);
 		media_entity_cleanup(&mt9t001->subdev.entity);
-		kfree(mt9t001);
 	}
 
 	return ret;
@@ -815,7 +814,6 @@ static int mt9t001_remove(struct i2c_client *client)
 	v4l2_ctrl_handler_free(&mt9t001->ctrls);
 	v4l2_device_unregister_subdev(subdev);
 	media_entity_cleanup(&subdev->entity);
-	kfree(mt9t001);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/mt9v011.c b/drivers/media/i2c/mt9v011.c
index 3f415fd12de..f74698cf14c 100644
--- a/drivers/media/i2c/mt9v011.c
+++ b/drivers/media/i2c/mt9v011.c
@@ -12,7 +12,6 @@
 #include <linux/module.h>
 #include <asm/div64.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 #include <media/mt9v011.h>
 
@@ -407,13 +406,6 @@ static int mt9v011_s_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt
 static int mt9v011_g_register(struct v4l2_subdev *sd,
 			      struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	reg->val = mt9v011_read(sd, reg->reg & 0xff);
 	reg->size = 2;
 
@@ -423,31 +415,12 @@ static int mt9v011_g_register(struct v4l2_subdev *sd,
 static int mt9v011_s_register(struct v4l2_subdev *sd,
 			      const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	mt9v011_write(sd, reg->reg & 0xff, reg->val & 0xffff);
 
 	return 0;
 }
 #endif
 
-static int mt9v011_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *chip)
-{
-	u16 version;
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	version = mt9v011_read(sd, R00_MT9V011_CHIP_VERSION);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_MT9V011,
-					  version);
-}
-
 static int mt9v011_s_ctrl(struct v4l2_ctrl *ctrl)
 {
 	struct mt9v011 *core =
@@ -489,7 +462,6 @@ static struct v4l2_ctrl_ops mt9v011_ctrl_ops = {
 
 static const struct v4l2_subdev_core_ops mt9v011_core_ops = {
 	.reset = mt9v011_reset,
-	.g_chip_ident = mt9v011_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = mt9v011_g_register,
 	.s_register = mt9v011_s_register,
@@ -526,7 +498,7 @@ static int mt9v011_probe(struct i2c_client *c,
 	     I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
 		return -EIO;
 
-	core = kzalloc(sizeof(struct mt9v011), GFP_KERNEL);
+	core = devm_kzalloc(&c->dev, sizeof(struct mt9v011), GFP_KERNEL);
 	if (!core)
 		return -ENOMEM;
 
@@ -539,7 +511,6 @@ static int mt9v011_probe(struct i2c_client *c,
 	    (version != MT9V011_REV_B_VERSION)) {
 		v4l2_info(sd, "*** unknown micron chip detected (0x%04x).\n",
 			  version);
-		kfree(core);
 		return -EINVAL;
 	}
 
@@ -562,7 +533,6 @@ static int mt9v011_probe(struct i2c_client *c,
 
 		v4l2_err(sd, "control initialization error %d\n", ret);
 		v4l2_ctrl_handler_free(&core->ctrls);
-		kfree(core);
 		return ret;
 	}
 	core->sd.ctrl_handler = &core->ctrls;
@@ -598,7 +568,7 @@ static int mt9v011_remove(struct i2c_client *c)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&core->ctrls);
-	kfree(to_mt9v011(sd));
+
 	return 0;
 }
 
diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c
index 3f356cb2825..60c6f673956 100644
--- a/drivers/media/i2c/mt9v032.c
+++ b/drivers/media/i2c/mt9v032.c
@@ -744,7 +744,7 @@ static int mt9v032_probe(struct i2c_client *client,
 		return -EIO;
 	}
 
-	mt9v032 = kzalloc(sizeof(*mt9v032), GFP_KERNEL);
+	mt9v032 = devm_kzalloc(&client->dev, sizeof(*mt9v032), GFP_KERNEL);
 	if (!mt9v032)
 		return -ENOMEM;
 
@@ -830,8 +830,9 @@ static int mt9v032_probe(struct i2c_client *client,
 
 	mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE;
 	ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad, 0);
+
 	if (ret < 0)
-		kfree(mt9v032);
+		v4l2_ctrl_handler_free(&mt9v032->ctrls);
 
 	return ret;
 }
@@ -841,9 +842,10 @@ static int mt9v032_remove(struct i2c_client *client)
 	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
 	struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 
+	v4l2_ctrl_handler_free(&mt9v032->ctrls);
 	v4l2_device_unregister_subdev(subdev);
 	media_entity_cleanup(&subdev->entity);
-	kfree(mt9v032);
+
 	return 0;
 }
 
diff --git a/drivers/media/i2c/noon010pc30.c b/drivers/media/i2c/noon010pc30.c
index 8554b47f993..271d0b7967a 100644
--- a/drivers/media/i2c/noon010pc30.c
+++ b/drivers/media/i2c/noon010pc30.c
@@ -19,7 +19,6 @@
 #include <linux/slab.h>
 #include <linux/regulator/consumer.h>
 #include <media/noon010pc30.h>
-#include <media/v4l2-chip-ident.h>
 #include <linux/videodev2.h>
 #include <linux/module.h>
 #include <media/v4l2-ctrls.h>
@@ -712,7 +711,7 @@ static int noon010_probe(struct i2c_client *client,
 		return -EIO;
 	}
 
-	info = kzalloc(sizeof(*info), GFP_KERNEL);
+	info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
 
@@ -746,57 +745,50 @@ static int noon010_probe(struct i2c_client *client,
 	info->curr_win		= &noon010_sizes[0];
 
 	if (gpio_is_valid(pdata->gpio_nreset)) {
-		ret = gpio_request(pdata->gpio_nreset, "NOON010PC30 NRST");
+		ret = devm_gpio_request_one(&client->dev, pdata->gpio_nreset,
+					    GPIOF_OUT_INIT_LOW,
+					    "NOON010PC30 NRST");
 		if (ret) {
 			dev_err(&client->dev, "GPIO request error: %d\n", ret);
 			goto np_err;
 		}
 		info->gpio_nreset = pdata->gpio_nreset;
-		gpio_direction_output(info->gpio_nreset, 0);
 		gpio_export(info->gpio_nreset, 0);
 	}
 
 	if (gpio_is_valid(pdata->gpio_nstby)) {
-		ret = gpio_request(pdata->gpio_nstby, "NOON010PC30 NSTBY");
+		ret = devm_gpio_request_one(&client->dev, pdata->gpio_nstby,
+					    GPIOF_OUT_INIT_LOW,
+					    "NOON010PC30 NSTBY");
 		if (ret) {
 			dev_err(&client->dev, "GPIO request error: %d\n", ret);
-			goto np_gpio_err;
+			goto np_err;
 		}
 		info->gpio_nstby = pdata->gpio_nstby;
-		gpio_direction_output(info->gpio_nstby, 0);
 		gpio_export(info->gpio_nstby, 0);
 	}
 
 	for (i = 0; i < NOON010_NUM_SUPPLIES; i++)
 		info->supply[i].supply = noon010_supply_name[i];
 
-	ret = regulator_bulk_get(&client->dev, NOON010_NUM_SUPPLIES,
+	ret = devm_regulator_bulk_get(&client->dev, NOON010_NUM_SUPPLIES,
 				 info->supply);
 	if (ret)
-		goto np_reg_err;
+		goto np_err;
 
 	info->pad.flags = MEDIA_PAD_FL_SOURCE;
 	sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
 	ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
 	if (ret < 0)
-		goto np_me_err;
+		goto np_err;
 
 	ret = noon010_detect(client, info);
 	if (!ret)
 		return 0;
 
-np_me_err:
-	regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
-np_reg_err:
-	if (gpio_is_valid(info->gpio_nstby))
-		gpio_free(info->gpio_nstby);
-np_gpio_err:
-	if (gpio_is_valid(info->gpio_nreset))
-		gpio_free(info->gpio_nreset);
 np_err:
 	v4l2_ctrl_handler_free(&info->hdl);
 	v4l2_device_unregister_subdev(sd);
-	kfree(info);
 	return ret;
 }
 
@@ -807,17 +799,8 @@ static int noon010_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&info->hdl);
-
-	regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
-
-	if (gpio_is_valid(info->gpio_nreset))
-		gpio_free(info->gpio_nreset);
-
-	if (gpio_is_valid(info->gpio_nstby))
-		gpio_free(info->gpio_nstby);
-
 	media_entity_cleanup(&sd->entity);
-	kfree(info);
+
 	return 0;
 }
 
diff --git a/drivers/media/i2c/ov7640.c b/drivers/media/i2c/ov7640.c
index b0cc927e8b1..faa64baf09e 100644
--- a/drivers/media/i2c/ov7640.c
+++ b/drivers/media/i2c/ov7640.c
@@ -20,7 +20,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <linux/slab.h>
 
 MODULE_DESCRIPTION("OmniVision ov7640 sensor driver");
@@ -59,7 +58,7 @@ static int ov7640_probe(struct i2c_client *client,
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		return -ENODEV;
 
-	sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
+	sd = devm_kzalloc(&client->dev, sizeof(*sd), GFP_KERNEL);
 	if (sd == NULL)
 		return -ENOMEM;
 	v4l2_i2c_subdev_init(sd, client, &ov7640_ops);
@@ -71,7 +70,6 @@ static int ov7640_probe(struct i2c_client *client,
 
 	if (write_regs(client, initial_registers) < 0) {
 		v4l_err(client, "error initializing OV7640\n");
-		kfree(sd);
 		return -ENODEV;
 	}
 
@@ -84,7 +82,7 @@ static int ov7640_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(sd);
+
 	return 0;
 }
 
diff --git a/drivers/media/i2c/ov7670.c b/drivers/media/i2c/ov7670.c
index 617ad3fff4a..e8a1ce20403 100644
--- a/drivers/media/i2c/ov7670.c
+++ b/drivers/media/i2c/ov7670.c
@@ -17,7 +17,6 @@
 #include <linux/delay.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-mediabus.h>
 #include <media/ov7670.h>
@@ -1462,25 +1461,12 @@ static const struct v4l2_ctrl_ops ov7670_ctrl_ops = {
 	.g_volatile_ctrl = ov7670_g_volatile_ctrl,
 };
 
-static int ov7670_g_chip_ident(struct v4l2_subdev *sd,
-		struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_OV7670, 0);
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int ov7670_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	unsigned char val = 0;
 	int ret;
 
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	ret = ov7670_read(sd, reg->reg & 0xff, &val);
 	reg->val = val;
 	reg->size = 1;
@@ -1489,12 +1475,6 @@ static int ov7670_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *r
 
 static int ov7670_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	ov7670_write(sd, reg->reg & 0xff, reg->val & 0xff);
 	return 0;
 }
@@ -1503,7 +1483,6 @@ static int ov7670_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_regis
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_subdev_core_ops ov7670_core_ops = {
-	.g_chip_ident = ov7670_g_chip_ident,
 	.reset = ov7670_reset,
 	.init = ov7670_init,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
@@ -1552,7 +1531,7 @@ static int ov7670_probe(struct i2c_client *client,
 	struct ov7670_info *info;
 	int ret;
 
-	info = kzalloc(sizeof(struct ov7670_info), GFP_KERNEL);
+	info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
 	if (info == NULL)
 		return -ENOMEM;
 	sd = &info->sd;
@@ -1590,7 +1569,6 @@ static int ov7670_probe(struct i2c_client *client,
 		v4l_dbg(1, debug, client,
 			"chip found @ 0x%x (%s) is not an ov7670 chip.\n",
 			client->addr << 1, client->adapter->name);
-		kfree(info);
 		return ret;
 	}
 	v4l_info(client, "chip found @ 0x%02x (%s)\n",
@@ -1635,7 +1613,6 @@ static int ov7670_probe(struct i2c_client *client,
 		int err = info->hdl.error;
 
 		v4l2_ctrl_handler_free(&info->hdl);
-		kfree(info);
 		return err;
 	}
 	/*
@@ -1659,7 +1636,6 @@ static int ov7670_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&info->hdl);
-	kfree(info);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c
index 9eac5310942..825ea86d982 100644
--- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c
+++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c
@@ -1385,9 +1385,12 @@ static int __s5c73m3_power_off(struct s5c73m3 *state)
 	}
 	return 0;
 err:
-	for (++i; i < S5C73M3_MAX_SUPPLIES; i++)
-		regulator_enable(state->supplies[i].consumer);
-
+	for (++i; i < S5C73M3_MAX_SUPPLIES; i++) {
+		int r = regulator_enable(state->supplies[i].consumer);
+		if (r < 0)
+			v4l2_err(&state->oif_sd, "Failed to reenable %s: %d\n",
+				 state->supplies[i].supply, r);
+	}
 	return ret;
 }
 
@@ -1511,59 +1514,40 @@ static const struct v4l2_subdev_ops oif_subdev_ops = {
 	.video	= &s5c73m3_oif_video_ops,
 };
 
-static int s5c73m3_configure_gpio(int nr, int val, const char *name)
-{
-	unsigned long flags = val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
-	int ret;
-
-	if (!gpio_is_valid(nr))
-		return 0;
-	ret = gpio_request_one(nr, flags, name);
-	if (!ret)
-		gpio_export(nr, 0);
-	return ret;
-}
-
-static int s5c73m3_free_gpios(struct s5c73m3 *state)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(state->gpio); i++) {
-		if (!gpio_is_valid(state->gpio[i].gpio))
-			continue;
-		gpio_free(state->gpio[i].gpio);
-		state->gpio[i].gpio = -EINVAL;
-	}
-	return 0;
-}
-
 static int s5c73m3_configure_gpios(struct s5c73m3 *state,
 				   const struct s5c73m3_platform_data *pdata)
 {
-	const struct s5c73m3_gpio *gpio = &pdata->gpio_stby;
+	struct device *dev = &state->i2c_client->dev;
+	const struct s5c73m3_gpio *gpio;
+	unsigned long flags;
 	int ret;
 
 	state->gpio[STBY].gpio = -EINVAL;
 	state->gpio[RST].gpio  = -EINVAL;
 
-	ret = s5c73m3_configure_gpio(gpio->gpio, gpio->level, "S5C73M3_STBY");
-	if (ret) {
-		s5c73m3_free_gpios(state);
-		return ret;
+	gpio = &pdata->gpio_stby;
+	if (gpio_is_valid(gpio->gpio)) {
+		flags = (gpio->level ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW)
+		      | GPIOF_EXPORT;
+		ret = devm_gpio_request_one(dev, gpio->gpio, flags,
+					    "S5C73M3_STBY");
+		if (ret < 0)
+			return ret;
+
+		state->gpio[STBY] = *gpio;
 	}
-	state->gpio[STBY] = *gpio;
-	if (gpio_is_valid(gpio->gpio))
-		gpio_set_value(gpio->gpio, 0);
 
 	gpio = &pdata->gpio_reset;
-	ret = s5c73m3_configure_gpio(gpio->gpio, gpio->level, "S5C73M3_RST");
-	if (ret) {
-		s5c73m3_free_gpios(state);
-		return ret;
+	if (gpio_is_valid(gpio->gpio)) {
+		flags = (gpio->level ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW)
+		      | GPIOF_EXPORT;
+		ret = devm_gpio_request_one(dev, gpio->gpio, flags,
+					    "S5C73M3_RST");
+		if (ret < 0)
+			return ret;
+
+		state->gpio[RST] = *gpio;
 	}
-	state->gpio[RST] = *gpio;
-	if (gpio_is_valid(gpio->gpio))
-		gpio_set_value(gpio->gpio, 0);
 
 	return 0;
 }
@@ -1626,10 +1610,11 @@ static int s5c73m3_probe(struct i2c_client *client,
 
 	state->mclk_frequency = pdata->mclk_frequency;
 	state->bus_type = pdata->bus_type;
+	state->i2c_client = client;
 
 	ret = s5c73m3_configure_gpios(state, pdata);
 	if (ret)
-		goto out_err1;
+		goto out_err;
 
 	for (i = 0; i < S5C73M3_MAX_SUPPLIES; i++)
 		state->supplies[i].supply = s5c73m3_supply_names[i];
@@ -1638,12 +1623,12 @@ static int s5c73m3_probe(struct i2c_client *client,
 			       state->supplies);
 	if (ret) {
 		dev_err(dev, "failed to get regulators\n");
-		goto out_err2;
+		goto out_err;
 	}
 
 	ret = s5c73m3_init_controls(state);
 	if (ret)
-		goto out_err2;
+		goto out_err;
 
 	state->sensor_pix_size[RES_ISP] = &s5c73m3_isp_resolutions[1];
 	state->sensor_pix_size[RES_JPEG] = &s5c73m3_jpeg_resolutions[1];
@@ -1659,16 +1644,12 @@ static int s5c73m3_probe(struct i2c_client *client,
 
 	ret = s5c73m3_register_spi_driver(state);
 	if (ret < 0)
-		goto out_err2;
-
-	state->i2c_client = client;
+		goto out_err;
 
 	v4l2_info(sd, "%s: completed succesfully\n", __func__);
 	return 0;
 
-out_err2:
-	s5c73m3_free_gpios(state);
-out_err1:
+out_err:
 	media_entity_cleanup(&sd->entity);
 	return ret;
 }
@@ -1688,7 +1669,6 @@ static int s5c73m3_remove(struct i2c_client *client)
 	media_entity_cleanup(&sensor_sd->entity);
 
 	s5c73m3_unregister_spi_driver(state);
-	s5c73m3_free_gpios(state);
 
 	return 0;
 }
diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-spi.c b/drivers/media/i2c/s5c73m3/s5c73m3-spi.c
index 6f3a9c00fe6..8079e26eb5e 100644
--- a/drivers/media/i2c/s5c73m3/s5c73m3-spi.c
+++ b/drivers/media/i2c/s5c73m3/s5c73m3-spi.c
@@ -73,7 +73,7 @@ int s5c73m3_spi_write(struct s5c73m3 *state, const void *addr,
 
 	memset(padding, 0, sizeof(padding));
 
-	for (i = 0; i < count ; i++) {
+	for (i = 0; i < count; i++) {
 		r = spi_xmit(spi_dev, (void *)addr + j, tx_size, SPI_DIR_TX);
 		if (r < 0)
 			return r;
@@ -98,7 +98,7 @@ int s5c73m3_spi_read(struct s5c73m3 *state, void *addr,
 	unsigned int i, j = 0;
 	int r = 0;
 
-	for (i = 0; i < count ; i++) {
+	for (i = 0; i < count; i++) {
 		r = spi_xmit(spi_dev, addr + j, tx_size, SPI_DIR_RX);
 		if (r < 0)
 			return r;
diff --git a/drivers/media/i2c/s5k6aa.c b/drivers/media/i2c/s5k6aa.c
index bdf5e3db31d..789c02a6ca1 100644
--- a/drivers/media/i2c/s5k6aa.c
+++ b/drivers/media/i2c/s5k6aa.c
@@ -1491,58 +1491,41 @@ static const struct v4l2_subdev_ops s5k6aa_subdev_ops = {
 /*
  * GPIO setup
  */
-static int s5k6aa_configure_gpio(int nr, int val, const char *name)
-{
-	unsigned long flags = val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
-	int ret;
-
-	if (!gpio_is_valid(nr))
-		return 0;
-	ret = gpio_request_one(nr, flags, name);
-	if (!ret)
-		gpio_export(nr, 0);
-	return ret;
-}
-
-static void s5k6aa_free_gpios(struct s5k6aa *s5k6aa)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(s5k6aa->gpio); i++) {
-		if (!gpio_is_valid(s5k6aa->gpio[i].gpio))
-			continue;
-		gpio_free(s5k6aa->gpio[i].gpio);
-		s5k6aa->gpio[i].gpio = -EINVAL;
-	}
-}
 
 static int s5k6aa_configure_gpios(struct s5k6aa *s5k6aa,
 				  const struct s5k6aa_platform_data *pdata)
 {
-	const struct s5k6aa_gpio *gpio = &pdata->gpio_stby;
+	struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
+	const struct s5k6aa_gpio *gpio;
+	unsigned long flags;
 	int ret;
 
 	s5k6aa->gpio[STBY].gpio = -EINVAL;
 	s5k6aa->gpio[RST].gpio  = -EINVAL;
 
-	ret = s5k6aa_configure_gpio(gpio->gpio, gpio->level, "S5K6AA_STBY");
-	if (ret) {
-		s5k6aa_free_gpios(s5k6aa);
-		return ret;
+	gpio = &pdata->gpio_stby;
+	if (gpio_is_valid(gpio->gpio)) {
+		flags = (gpio->level ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW)
+		      | GPIOF_EXPORT;
+		ret = devm_gpio_request_one(&client->dev, gpio->gpio, flags,
+					    "S5K6AA_STBY");
+		if (ret < 0)
+			return ret;
+
+		s5k6aa->gpio[STBY] = *gpio;
 	}
-	s5k6aa->gpio[STBY] = *gpio;
-	if (gpio_is_valid(gpio->gpio))
-		gpio_set_value(gpio->gpio, 0);
 
 	gpio = &pdata->gpio_reset;
-	ret = s5k6aa_configure_gpio(gpio->gpio, gpio->level, "S5K6AA_RST");
-	if (ret) {
-		s5k6aa_free_gpios(s5k6aa);
-		return ret;
+	if (gpio_is_valid(gpio->gpio)) {
+		flags = (gpio->level ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW)
+		      | GPIOF_EXPORT;
+		ret = devm_gpio_request_one(&client->dev, gpio->gpio, flags,
+					    "S5K6AA_RST");
+		if (ret < 0)
+			return ret;
+
+		s5k6aa->gpio[RST] = *gpio;
 	}
-	s5k6aa->gpio[RST] = *gpio;
-	if (gpio_is_valid(gpio->gpio))
-		gpio_set_value(gpio->gpio, 0);
 
 	return 0;
 }
@@ -1593,7 +1576,7 @@ static int s5k6aa_probe(struct i2c_client *client,
 
 	ret = s5k6aa_configure_gpios(s5k6aa, pdata);
 	if (ret)
-		goto out_err2;
+		goto out_err;
 
 	for (i = 0; i < S5K6AA_NUM_SUPPLIES; i++)
 		s5k6aa->supplies[i].supply = s5k6aa_supply_names[i];
@@ -1602,12 +1585,12 @@ static int s5k6aa_probe(struct i2c_client *client,
 				 s5k6aa->supplies);
 	if (ret) {
 		dev_err(&client->dev, "Failed to get regulators\n");
-		goto out_err3;
+		goto out_err;
 	}
 
 	ret = s5k6aa_initialize_ctrls(s5k6aa);
 	if (ret)
-		goto out_err3;
+		goto out_err;
 
 	s5k6aa_presets_data_init(s5k6aa);
 
@@ -1618,9 +1601,7 @@ static int s5k6aa_probe(struct i2c_client *client,
 
 	return 0;
 
-out_err3:
-	s5k6aa_free_gpios(s5k6aa);
-out_err2:
+out_err:
 	media_entity_cleanup(&s5k6aa->sd.entity);
 	return ret;
 }
@@ -1628,12 +1609,10 @@ out_err2:
 static int s5k6aa_remove(struct i2c_client *client)
 {
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct s5k6aa *s5k6aa = to_s5k6aa(sd);
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(sd->ctrl_handler);
 	media_entity_cleanup(&sd->entity);
-	s5k6aa_free_gpios(s5k6aa);
 
 	return 0;
 }
diff --git a/drivers/media/i2c/saa6588.c b/drivers/media/i2c/saa6588.c
index b4e1ccbd87e..70bc72e795d 100644
--- a/drivers/media/i2c/saa6588.c
+++ b/drivers/media/i2c/saa6588.c
@@ -33,7 +33,6 @@
 
 #include <media/saa6588.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 
 
 /* insmod options */
@@ -443,17 +442,9 @@ static int saa6588_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
 	return 0;
 }
 
-static int saa6588_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA6588, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_subdev_core_ops saa6588_core_ops = {
-	.g_chip_ident = saa6588_g_chip_ident,
 	.ioctl = saa6588_ioctl,
 };
 
@@ -478,17 +469,15 @@ static int saa6588_probe(struct i2c_client *client,
 	v4l_info(client, "saa6588 found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	s = kzalloc(sizeof(*s), GFP_KERNEL);
+	s = devm_kzalloc(&client->dev, sizeof(*s), GFP_KERNEL);
 	if (s == NULL)
 		return -ENOMEM;
 
 	s->buf_size = bufblocks * 3;
 
-	s->buffer = kmalloc(s->buf_size, GFP_KERNEL);
-	if (s->buffer == NULL) {
-		kfree(s);
+	s->buffer = devm_kzalloc(&client->dev, s->buf_size, GFP_KERNEL);
+	if (s->buffer == NULL)
 		return -ENOMEM;
-	}
 	sd = &s->sd;
 	v4l2_i2c_subdev_init(sd, client, &saa6588_ops);
 	spin_lock_init(&s->lock);
@@ -516,8 +505,6 @@ static int saa6588_remove(struct i2c_client *client)
 
 	cancel_delayed_work_sync(&s->work);
 
-	kfree(s->buffer);
-	kfree(s);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/saa7110.c b/drivers/media/i2c/saa7110.c
index 51cd4c8f052..ac43e929a1d 100644
--- a/drivers/media/i2c/saa7110.c
+++ b/drivers/media/i2c/saa7110.c
@@ -35,7 +35,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
@@ -203,7 +202,7 @@ static v4l2_std_id determine_norm(struct v4l2_subdev *sd)
 	status = saa7110_read(sd);
 	if (status & 0x40) {
 		v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status);
-		return decoder->norm;	/* no change*/
+		return V4L2_STD_UNKNOWN;
 	}
 	if ((status & 3) == 0) {
 		saa7110_write(sd, 0x06, 0x83);
@@ -265,7 +264,7 @@ static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus)
 
 static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
 {
-	*(v4l2_std_id *)std = determine_norm(sd);
+	*std &= determine_norm(sd);
 	return 0;
 }
 
@@ -352,13 +351,6 @@ static int saa7110_s_ctrl(struct v4l2_ctrl *ctrl)
 	return 0;
 }
 
-static int saa7110_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7110, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_ctrl_ops saa7110_ctrl_ops = {
@@ -366,7 +358,6 @@ static const struct v4l2_ctrl_ops saa7110_ctrl_ops = {
 };
 
 static const struct v4l2_subdev_core_ops saa7110_core_ops = {
-	.g_chip_ident = saa7110_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -406,7 +397,7 @@ static int saa7110_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL);
+	decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
 	if (!decoder)
 		return -ENOMEM;
 	sd = &decoder->sd;
@@ -428,7 +419,6 @@ static int saa7110_probe(struct i2c_client *client,
 		int err = decoder->hdl.error;
 
 		v4l2_ctrl_handler_free(&decoder->hdl);
-		kfree(decoder);
 		return err;
 	}
 	v4l2_ctrl_handler_setup(&decoder->hdl);
@@ -469,7 +459,6 @@ static int saa7110_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&decoder->hdl);
-	kfree(decoder);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/saa7115.c b/drivers/media/i2c/saa7115.c
index 52c717d977c..7fd766ec64c 100644
--- a/drivers/media/i2c/saa7115.c
+++ b/drivers/media/i2c/saa7115.c
@@ -46,7 +46,6 @@
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-ctrls.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/saa7115.h>
 #include <asm/div64.h>
 
@@ -63,6 +62,16 @@ module_param(debug, bool, 0644);
 MODULE_PARM_DESC(debug, "Debug level (0-1)");
 
 
+enum saa711x_model {
+	SAA7111A,
+	SAA7111,
+	SAA7113,
+	GM7113C,
+	SAA7114,
+	SAA7115,
+	SAA7118,
+};
+
 struct saa711x_state {
 	struct v4l2_subdev sd;
 	struct v4l2_ctrl_handler hdl;
@@ -80,7 +89,7 @@ struct saa711x_state {
 	int radio;
 	int width;
 	int height;
-	u32 ident;
+	enum saa711x_model ident;
 	u32 audclk_freq;
 	u32 crystal_freq;
 	bool ucgc;
@@ -111,10 +120,10 @@ static inline int saa711x_write(struct v4l2_subdev *sd, u8 reg, u8 value)
 /* Sanity routine to check if a register is present */
 static int saa711x_has_reg(const int id, const u8 reg)
 {
-	if (id == V4L2_IDENT_SAA7111)
+	if (id == SAA7111)
 		return reg < 0x20 && reg != 0x01 && reg != 0x0f &&
 		       (reg < 0x13 || reg > 0x19) && reg != 0x1d && reg != 0x1e;
-	if (id == V4L2_IDENT_SAA7111A)
+	if (id == SAA7111A)
 		return reg < 0x20 && reg != 0x01 && reg != 0x0f &&
 		       reg != 0x14 && reg != 0x18 && reg != 0x19 &&
 		       reg != 0x1d && reg != 0x1e;
@@ -127,16 +136,18 @@ static int saa711x_has_reg(const int id, const u8 reg)
 		return 0;
 
 	switch (id) {
-	case V4L2_IDENT_SAA7113:
+	case GM7113C:
+		return reg != 0x14 && (reg < 0x18 || reg > 0x1e) && reg < 0x20;
+	case SAA7113:
 		return reg != 0x14 && (reg < 0x18 || reg > 0x1e) && (reg < 0x20 || reg > 0x3f) &&
 		       reg != 0x5d && reg < 0x63;
-	case V4L2_IDENT_SAA7114:
+	case SAA7114:
 		return (reg < 0x1a || reg > 0x1e) && (reg < 0x20 || reg > 0x2f) &&
 		       (reg < 0x63 || reg > 0x7f) && reg != 0x33 && reg != 0x37 &&
 		       reg != 0x81 && reg < 0xf0;
-	case V4L2_IDENT_SAA7115:
+	case SAA7115:
 		return (reg < 0x20 || reg > 0x2f) && reg != 0x65 && (reg < 0xfc || reg > 0xfe);
-	case V4L2_IDENT_SAA7118:
+	case SAA7118:
 		return (reg < 0x1a || reg > 0x1d) && (reg < 0x20 || reg > 0x22) &&
 		       (reg < 0x26 || reg > 0x28) && reg != 0x33 && reg != 0x37 &&
 		       (reg < 0x63 || reg > 0x7f) && reg != 0x81 && reg < 0xf0;
@@ -214,7 +225,10 @@ static const unsigned char saa7111_init[] = {
 	0x00, 0x00
 };
 
-/* SAA7113 init codes */
+/* SAA7113/GM7113C init codes
+ * It's important that R_14... R_17 == 0x00
+ * for the gm7113c chip to deliver stable video
+ */
 static const unsigned char saa7113_init[] = {
 	R_01_INC_DELAY, 0x08,
 	R_02_INPUT_CNTL_1, 0xc2,
@@ -448,6 +462,24 @@ static const unsigned char saa7115_cfg_50hz_video[] = {
 
 /* ============== SAA7715 VIDEO templates (end) =======  */
 
+/* ============== GM7113C VIDEO templates =============  */
+static const unsigned char gm7113c_cfg_60hz_video[] = {
+	R_08_SYNC_CNTL, 0x68,			/* 0xBO: auto detection, 0x68 = NTSC */
+	R_0E_CHROMA_CNTL_1, 0x07,		/* video autodetection is on */
+
+	0x00, 0x00
+};
+
+static const unsigned char gm7113c_cfg_50hz_video[] = {
+	R_08_SYNC_CNTL, 0x28,			/* 0x28 = PAL */
+	R_0E_CHROMA_CNTL_1, 0x07,
+
+	0x00, 0x00
+};
+
+/* ============== GM7113C VIDEO templates (end) =======  */
+
+
 static const unsigned char saa7115_cfg_vbi_on[] = {
 	R_80_GLOBAL_CNTL_1, 0x00,			/* reset tasks */
 	R_88_POWER_SAVE_ADC_PORT_CNTL, 0xd0,		/* reset scaler */
@@ -932,11 +964,17 @@ static void saa711x_set_v4lstd(struct v4l2_subdev *sd, v4l2_std_id std)
 	// This works for NTSC-M, SECAM-L and the 50Hz PAL variants.
 	if (std & V4L2_STD_525_60) {
 		v4l2_dbg(1, debug, sd, "decoder set standard 60 Hz\n");
-		saa711x_writeregs(sd, saa7115_cfg_60hz_video);
+		if (state->ident == GM7113C)
+			saa711x_writeregs(sd, gm7113c_cfg_60hz_video);
+		else
+			saa711x_writeregs(sd, saa7115_cfg_60hz_video);
 		saa711x_set_size(sd, 720, 480);
 	} else {
 		v4l2_dbg(1, debug, sd, "decoder set standard 50 Hz\n");
-		saa711x_writeregs(sd, saa7115_cfg_50hz_video);
+		if (state->ident == GM7113C)
+			saa711x_writeregs(sd, gm7113c_cfg_50hz_video);
+		else
+			saa711x_writeregs(sd, saa7115_cfg_50hz_video);
 		saa711x_set_size(sd, 720, 576);
 	}
 
@@ -949,7 +987,8 @@ static void saa711x_set_v4lstd(struct v4l2_subdev *sd, v4l2_std_id std)
 	011 NTSC N (3.58MHz)            PAL M (3.58MHz)
 	100 reserved                    NTSC-Japan (3.58MHz)
 	*/
-	if (state->ident <= V4L2_IDENT_SAA7113) {
+	if (state->ident <= SAA7113 ||
+	    state->ident == GM7113C) {
 		u8 reg = saa711x_read(sd, R_0E_CHROMA_CNTL_1) & 0x8f;
 
 		if (std == V4L2_STD_PAL_M) {
@@ -968,9 +1007,8 @@ static void saa711x_set_v4lstd(struct v4l2_subdev *sd, v4l2_std_id std)
 		/* restart task B if needed */
 		int taskb = saa711x_read(sd, R_80_GLOBAL_CNTL_1) & 0x10;
 
-		if (taskb && state->ident == V4L2_IDENT_SAA7114) {
+		if (taskb && state->ident == SAA7114)
 			saa711x_writeregs(sd, saa7115_cfg_vbi_on);
-		}
 
 		/* switch audio mode too! */
 		saa711x_s_clock_freq(sd, state->audclk_freq);
@@ -992,7 +1030,7 @@ static void saa711x_set_lcr(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_forma
 
 #else
 	/* SAA7113 and SAA7118 also should support VBI - Need testing */
-	if (state->ident != V4L2_IDENT_SAA7115)
+	if (state->ident != SAA7115)
 		return;
 #endif
 
@@ -1214,13 +1252,14 @@ static int saa711x_s_routing(struct v4l2_subdev *sd,
 			     u32 input, u32 output, u32 config)
 {
 	struct saa711x_state *state = to_state(sd);
-	u8 mask = (state->ident <= V4L2_IDENT_SAA7111A) ? 0xf8 : 0xf0;
+	u8 mask = (state->ident <= SAA7111A) ? 0xf8 : 0xf0;
 
 	v4l2_dbg(1, debug, sd, "decoder set input %d output %d\n",
 		input, output);
 
 	/* saa7111/3 does not have these inputs */
-	if (state->ident <= V4L2_IDENT_SAA7113 &&
+	if ((state->ident <= SAA7113 ||
+	     state->ident == GM7113C) &&
 	    (input == SAA7115_COMPOSITE4 ||
 	     input == SAA7115_COMPOSITE5)) {
 		return -EINVAL;
@@ -1235,7 +1274,7 @@ static int saa711x_s_routing(struct v4l2_subdev *sd,
 	state->input = input;
 
 	/* saa7111 has slightly different input numbering */
-	if (state->ident <= V4L2_IDENT_SAA7111A) {
+	if (state->ident <= SAA7111A) {
 		if (input >= SAA7115_COMPOSITE4)
 			input -= 2;
 		/* saa7111 specific */
@@ -1258,13 +1297,13 @@ static int saa711x_s_routing(struct v4l2_subdev *sd,
 			(state->input >= SAA7115_SVIDEO0 ? 0x80 : 0x0));
 
 	state->output = output;
-	if (state->ident == V4L2_IDENT_SAA7114 ||
-			state->ident == V4L2_IDENT_SAA7115) {
+	if (state->ident == SAA7114 ||
+			state->ident == SAA7115) {
 		saa711x_write(sd, R_83_X_PORT_I_O_ENA_AND_OUT_CLK,
 				(saa711x_read(sd, R_83_X_PORT_I_O_ENA_AND_OUT_CLK) & 0xfe) |
 				(state->output & 0x01));
 	}
-	if (state->ident > V4L2_IDENT_SAA7111A) {
+	if (state->ident > SAA7111A) {
 		if (config & SAA7115_IDQ_IS_DEFAULT)
 			saa711x_write(sd, R_85_I_PORT_SIGNAL_POLAR, 0x20);
 		else
@@ -1277,7 +1316,7 @@ static int saa711x_s_gpio(struct v4l2_subdev *sd, u32 val)
 {
 	struct saa711x_state *state = to_state(sd);
 
-	if (state->ident > V4L2_IDENT_SAA7111A)
+	if (state->ident > SAA7111A)
 		return -EINVAL;
 	saa711x_write(sd, 0x11, (saa711x_read(sd, 0x11) & 0x7f) |
 		(val ? 0x80 : 0));
@@ -1367,7 +1406,7 @@ static int saa711x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
 
 	reg1f = saa711x_read(sd, R_1F_STATUS_BYTE_2_VD_DEC);
 
-	if (state->ident == V4L2_IDENT_SAA7115) {
+	if (state->ident == SAA7115) {
 		reg1e = saa711x_read(sd, R_1E_STATUS_BYTE_1_VD_DEC);
 
 		v4l2_dbg(1, debug, sd, "Status byte 1 (0x1e)=0x%02x\n", reg1e);
@@ -1389,6 +1428,7 @@ static int saa711x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
 			*std &= V4L2_STD_SECAM;
 			break;
 		default:
+			*std = V4L2_STD_UNKNOWN;
 			/* Can't detect anything */
 			break;
 		}
@@ -1397,8 +1437,10 @@ static int saa711x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
 	v4l2_dbg(1, debug, sd, "Status byte 2 (0x1f)=0x%02x\n", reg1f);
 
 	/* horizontal/vertical not locked */
-	if (reg1f & 0x40)
+	if (reg1f & 0x40) {
+		*std = V4L2_STD_UNKNOWN;
 		goto ret;
+	}
 
 	if (reg1f & 0x20)
 		*std &= V4L2_STD_525_60;
@@ -1418,7 +1460,7 @@ static int saa711x_g_input_status(struct v4l2_subdev *sd, u32 *status)
 	int reg1f;
 
 	*status = V4L2_IN_ST_NO_SIGNAL;
-	if (state->ident == V4L2_IDENT_SAA7115)
+	if (state->ident == SAA7115)
 		reg1e = saa711x_read(sd, R_1E_STATUS_BYTE_1_VD_DEC);
 	reg1f = saa711x_read(sd, R_1F_STATUS_BYTE_2_VD_DEC);
 	if ((reg1f & 0xc1) == 0x81 && (reg1e & 0xc0) == 0x80)
@@ -1429,12 +1471,6 @@ static int saa711x_g_input_status(struct v4l2_subdev *sd, u32 *status)
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int saa711x_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->val = saa711x_read(sd, reg->reg & 0xff);
 	reg->size = 1;
 	return 0;
@@ -1442,25 +1478,11 @@ static int saa711x_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *
 
 static int saa711x_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	saa711x_write(sd, reg->reg & 0xff, reg->val & 0xff);
 	return 0;
 }
 #endif
 
-static int saa711x_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct saa711x_state *state = to_state(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, state->ident, 0);
-}
-
 static int saa711x_log_status(struct v4l2_subdev *sd)
 {
 	struct saa711x_state *state = to_state(sd);
@@ -1469,7 +1491,7 @@ static int saa711x_log_status(struct v4l2_subdev *sd)
 	int vcr;
 
 	v4l2_info(sd, "Audio frequency: %d Hz\n", state->audclk_freq);
-	if (state->ident != V4L2_IDENT_SAA7115) {
+	if (state->ident != SAA7115) {
 		/* status for the saa7114 */
 		reg1f = saa711x_read(sd, R_1F_STATUS_BYTE_2_VD_DEC);
 		signalOk = (reg1f & 0xc1) == 0x81;
@@ -1520,7 +1542,6 @@ static const struct v4l2_ctrl_ops saa711x_ctrl_ops = {
 
 static const struct v4l2_subdev_core_ops saa711x_core_ops = {
 	.log_status = saa711x_log_status,
-	.g_chip_ident = saa711x_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -1571,55 +1592,145 @@ static const struct v4l2_subdev_ops saa711x_ops = {
 	.vbi = &saa711x_vbi_ops,
 };
 
+#define CHIP_VER_SIZE	16
+
 /* ----------------------------------------------------------------------- */
 
-static int saa711x_probe(struct i2c_client *client,
-			 const struct i2c_device_id *id)
+/**
+ * saa711x_detect_chip - Detects the saa711x (or clone) variant
+ * @client:		I2C client structure.
+ * @id:			I2C device ID structure.
+ * @name:		Name of the device to be filled.
+ *
+ * Detects the Philips/NXP saa711x chip, or some clone of it.
+ * if 'id' is NULL or id->driver_data is equal to 1, it auto-probes
+ * the analog demod.
+ * If the tuner is not found, it returns -ENODEV.
+ * If auto-detection is disabled and the tuner doesn't match what it was
+ *	requred, it returns -EINVAL and fills 'name'.
+ * If the chip is found, it returns the chip ID and fills 'name'.
+ */
+static int saa711x_detect_chip(struct i2c_client *client,
+			       const struct i2c_device_id *id,
+			       char *name)
 {
-	struct saa711x_state *state;
-	struct v4l2_subdev *sd;
-	struct v4l2_ctrl_handler *hdl;
-	int i;
-	char name[17];
+	char chip_ver[CHIP_VER_SIZE];
 	char chip_id;
-	int autodetect = !id || id->driver_data == 1;
+	int i;
+	int autodetect;
 
-	/* Check if the adapter supports the needed features */
-	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
-		return -EIO;
+	autodetect = !id || id->driver_data == 1;
 
-	for (i = 0; i < 0x0f; i++) {
+	/* Read the chip version register */
+	for (i = 0; i < CHIP_VER_SIZE; i++) {
 		i2c_smbus_write_byte_data(client, 0, i);
-		name[i] = (i2c_smbus_read_byte_data(client, 0) & 0x0f) + '0';
+		chip_ver[i] = i2c_smbus_read_byte_data(client, 0);
+		name[i] = (chip_ver[i] & 0x0f) + '0';
 		if (name[i] > '9')
 			name[i] += 'a' - '9' - 1;
 	}
 	name[i] = '\0';
 
-	chip_id = name[5];
+	/* Check if it is a Philips/NXP chip */
+	if (!memcmp(name + 1, "f711", 4)) {
+		chip_id = name[5];
+		snprintf(name, CHIP_VER_SIZE, "saa711%c", chip_id);
 
-	/* Check whether this chip is part of the saa711x series */
-	if (memcmp(name + 1, "f711", 4)) {
-		v4l_dbg(1, debug, client, "chip found @ 0x%x (ID %s) does not match a known saa711x chip.\n",
-			client->addr << 1, name);
-		return -ENODEV;
+		if (!autodetect && strcmp(name, id->name))
+			return -EINVAL;
+
+		switch (chip_id) {
+		case '1':
+			if (chip_ver[0] & 0xf0) {
+				snprintf(name, CHIP_VER_SIZE, "saa711%ca", chip_id);
+				v4l_info(client, "saa7111a variant found\n");
+				return SAA7111A;
+			}
+			return SAA7111;
+		case '3':
+			return SAA7113;
+		case '4':
+			return SAA7114;
+		case '5':
+			return SAA7115;
+		case '8':
+			return SAA7118;
+		default:
+			v4l2_info(client,
+				  "WARNING: Philips/NXP chip unknown - Falling back to saa7111\n");
+			return SAA7111;
+		}
 	}
 
-	/* Safety check */
-	if (!autodetect && id->name[6] != chip_id) {
-		v4l_warn(client, "found saa711%c while %s was expected\n",
-			 chip_id, id->name);
+	/* Check if it is a gm7113c */
+	if (!memcmp(name, "0000", 4)) {
+		chip_id = 0;
+		for (i = 0; i < 4; i++) {
+			chip_id = chip_id << 1;
+			chip_id |= (chip_ver[i] & 0x80) ? 1 : 0;
+		}
+
+		/*
+		 * Note: From the datasheet, only versions 1 and 2
+		 * exists. However, tests on a device labeled as:
+		 * "GM7113C 1145" returned "10" on all 16 chip
+		 * version (reg 0x00) reads. So, we need to also
+		 * accept at least verion 0. For now, let's just
+		 * assume that a device that returns "0000" for
+		 * the lower nibble is a gm7113c.
+		 */
+
+		strlcpy(name, "gm7113c", CHIP_VER_SIZE);
+
+		if (!autodetect && strcmp(name, id->name))
+			return -EINVAL;
+
+		v4l_dbg(1, debug, client,
+			"It seems to be a %s chip (%*ph) @ 0x%x.\n",
+			name, 16, chip_ver, client->addr << 1);
+
+		return GM7113C;
 	}
-	snprintf(client->name, sizeof(client->name), "saa711%c", chip_id);
-	v4l_info(client, "saa711%c found (%s) @ 0x%x (%s)\n", chip_id, name,
-		 client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct saa711x_state), GFP_KERNEL);
+	/* Chip was not discovered. Return its ID and don't bind */
+	v4l_dbg(1, debug, client, "chip %*ph @ 0x%x is unknown.\n",
+		16, chip_ver, client->addr << 1);
+	return -ENODEV;
+}
+
+static int saa711x_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	struct saa711x_state *state;
+	struct v4l2_subdev *sd;
+	struct v4l2_ctrl_handler *hdl;
+	int ident;
+	char name[CHIP_VER_SIZE + 1];
+
+	/* Check if the adapter supports the needed features */
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+		return -EIO;
+
+	ident = saa711x_detect_chip(client, id, name);
+	if (ident == -EINVAL) {
+		/* Chip exists, but doesn't match */
+		v4l_warn(client, "found %s while %s was expected\n",
+			 name, id->name);
+		return -ENODEV;
+	}
+	if (ident < 0)
+		return ident;
+
+	strlcpy(client->name, name, sizeof(client->name));
+
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 	sd = &state->sd;
 	v4l2_i2c_subdev_init(sd, client, &saa711x_ops);
 
+	v4l_info(client, "%s found @ 0x%x (%s)\n", name,
+		 client->addr << 1, client->adapter->name);
 	hdl = &state->hdl;
 	v4l2_ctrl_handler_init(hdl, 6);
 	/* add in ascending ID order */
@@ -1640,7 +1751,6 @@ static int saa711x_probe(struct i2c_client *client,
 		int err = hdl->error;
 
 		v4l2_ctrl_handler_free(hdl);
-		kfree(state);
 		return err;
 	}
 	v4l2_ctrl_auto_cluster(2, &state->agc, 0, true);
@@ -1649,31 +1759,7 @@ static int saa711x_probe(struct i2c_client *client,
 	state->output = SAA7115_IPORT_ON;
 	state->enable = 1;
 	state->radio = 0;
-	switch (chip_id) {
-	case '1':
-		state->ident = V4L2_IDENT_SAA7111;
-		if (saa711x_read(sd, R_00_CHIP_VERSION) & 0xf0) {
-			v4l_info(client, "saa7111a variant found\n");
-			state->ident = V4L2_IDENT_SAA7111A;
-		}
-		break;
-	case '3':
-		state->ident = V4L2_IDENT_SAA7113;
-		break;
-	case '4':
-		state->ident = V4L2_IDENT_SAA7114;
-		break;
-	case '5':
-		state->ident = V4L2_IDENT_SAA7115;
-		break;
-	case '8':
-		state->ident = V4L2_IDENT_SAA7118;
-		break;
-	default:
-		state->ident = V4L2_IDENT_SAA7111;
-		v4l2_info(sd, "WARNING: Chip is not known - Falling back to saa7111\n");
-		break;
-	}
+	state->ident = ident;
 
 	state->audclk_freq = 48000;
 
@@ -1682,18 +1768,19 @@ static int saa711x_probe(struct i2c_client *client,
 	/* init to 60hz/48khz */
 	state->crystal_freq = SAA7115_FREQ_24_576_MHZ;
 	switch (state->ident) {
-	case V4L2_IDENT_SAA7111:
-	case V4L2_IDENT_SAA7111A:
+	case SAA7111:
+	case SAA7111A:
 		saa711x_writeregs(sd, saa7111_init);
 		break;
-	case V4L2_IDENT_SAA7113:
+	case GM7113C:
+	case SAA7113:
 		saa711x_writeregs(sd, saa7113_init);
 		break;
 	default:
 		state->crystal_freq = SAA7115_FREQ_32_11_MHZ;
 		saa711x_writeregs(sd, saa7115_init_auto_input);
 	}
-	if (state->ident > V4L2_IDENT_SAA7111A)
+	if (state->ident > SAA7111A)
 		saa711x_writeregs(sd, saa7115_init_misc);
 	saa711x_set_v4lstd(sd, V4L2_STD_NTSC);
 	v4l2_ctrl_handler_setup(hdl);
@@ -1712,7 +1799,6 @@ static int saa711x_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(sd->ctrl_handler);
-	kfree(to_state(sd));
 	return 0;
 }
 
@@ -1723,6 +1809,7 @@ static const struct i2c_device_id saa711x_id[] = {
 	{ "saa7114", 0 },
 	{ "saa7115", 0 },
 	{ "saa7118", 0 },
+	{ "gm7113c", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, saa711x_id);
diff --git a/drivers/media/i2c/saa7127.c b/drivers/media/i2c/saa7127.c
index 8a47ac10927..264b755bedc 100644
--- a/drivers/media/i2c/saa7127.c
+++ b/drivers/media/i2c/saa7127.c
@@ -54,7 +54,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/saa7127.h>
 
 static int debug;
@@ -251,10 +250,15 @@ static struct i2c_reg_value saa7127_init_config_50hz_secam[] = {
  **********************************************************************
  */
 
+enum saa712x_model {
+	SAA7127,
+	SAA7129,
+};
+
 struct saa7127_state {
 	struct v4l2_subdev sd;
 	v4l2_std_id std;
-	u32 ident;
+	enum saa712x_model ident;
 	enum saa7127_input_type input_type;
 	enum saa7127_output_type output_type;
 	int video_enable;
@@ -482,7 +486,7 @@ static int saa7127_set_std(struct v4l2_subdev *sd, v4l2_std_id std)
 		inittab = saa7127_init_config_60hz;
 		state->reg_61 = SAA7127_60HZ_DAC_CONTROL;
 
-	} else if (state->ident == V4L2_IDENT_SAA7129 &&
+	} else if (state->ident == SAA7129 &&
 		   (std & V4L2_STD_SECAM) &&
 		   !(std & (V4L2_STD_625_50 & ~V4L2_STD_SECAM))) {
 
@@ -517,7 +521,7 @@ static int saa7127_set_output_type(struct v4l2_subdev *sd, int output)
 		break;
 
 	case SAA7127_OUTPUT_TYPE_COMPOSITE:
-		if (state->ident == V4L2_IDENT_SAA7129)
+		if (state->ident == SAA7129)
 			state->reg_2d = 0x20;	/* CVBS only */
 		else
 			state->reg_2d = 0x08;	/* 00001000 CVBS only, RGB DAC's off (high impedance mode) */
@@ -525,7 +529,7 @@ static int saa7127_set_output_type(struct v4l2_subdev *sd, int output)
 		break;
 
 	case SAA7127_OUTPUT_TYPE_SVIDEO:
-		if (state->ident == V4L2_IDENT_SAA7129)
+		if (state->ident == SAA7129)
 			state->reg_2d = 0x18;	/* Y + C */
 		else
 			state->reg_2d = 0xff;   /*11111111  croma -> R, luma -> CVBS + G + B */
@@ -543,7 +547,7 @@ static int saa7127_set_output_type(struct v4l2_subdev *sd, int output)
 		break;
 
 	case SAA7127_OUTPUT_TYPE_BOTH:
-		if (state->ident == V4L2_IDENT_SAA7129)
+		if (state->ident == SAA7129)
 			state->reg_2d = 0x38;
 		else
 			state->reg_2d = 0xbf;
@@ -661,12 +665,6 @@ static int saa7127_s_vbi_data(struct v4l2_subdev *sd, const struct v4l2_sliced_v
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int saa7127_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->val = saa7127_read(sd, reg->reg & 0xff);
 	reg->size = 1;
 	return 0;
@@ -674,25 +672,11 @@ static int saa7127_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *
 
 static int saa7127_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	saa7127_write(sd, reg->reg & 0xff, reg->val & 0xff);
 	return 0;
 }
 #endif
 
-static int saa7127_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct saa7127_state *state = to_state(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, state->ident, 0);
-}
-
 static int saa7127_log_status(struct v4l2_subdev *sd)
 {
 	struct saa7127_state *state = to_state(sd);
@@ -712,7 +696,6 @@ static int saa7127_log_status(struct v4l2_subdev *sd)
 
 static const struct v4l2_subdev_core_ops saa7127_core_ops = {
 	.log_status = saa7127_log_status,
-	.g_chip_ident = saa7127_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = saa7127_g_register,
 	.s_register = saa7127_s_register,
@@ -752,7 +735,7 @@ static int saa7127_probe(struct i2c_client *client,
 	v4l_dbg(1, debug, client, "detecting saa7127 client on address 0x%x\n",
 			client->addr << 1);
 
-	state = kzalloc(sizeof(struct saa7127_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 
@@ -767,7 +750,6 @@ static int saa7127_probe(struct i2c_client *client,
 	if ((saa7127_read(sd, 0) & 0xe4) != 0 ||
 			(saa7127_read(sd, 0x29) & 0x3f) != 0x1d) {
 		v4l2_dbg(1, debug, sd, "saa7127 not found\n");
-		kfree(state);
 		return -ENODEV;
 	}
 
@@ -782,10 +764,10 @@ static int saa7127_probe(struct i2c_client *client,
 		if (saa7127_read(sd, SAA7129_REG_FADE_KEY_COL2) == 0xaa) {
 			saa7127_write(sd, SAA7129_REG_FADE_KEY_COL2,
 					read_result);
-			state->ident = V4L2_IDENT_SAA7129;
+			state->ident = SAA7129;
 			strlcpy(client->name, "saa7129", I2C_NAME_SIZE);
 		} else {
-			state->ident = V4L2_IDENT_SAA7127;
+			state->ident = SAA7127;
 			strlcpy(client->name, "saa7127", I2C_NAME_SIZE);
 		}
 	}
@@ -809,7 +791,7 @@ static int saa7127_probe(struct i2c_client *client,
 		saa7127_set_input_type(sd, SAA7127_INPUT_TYPE_NORMAL);
 	saa7127_set_video_enable(sd, 1);
 
-	if (state->ident == V4L2_IDENT_SAA7129)
+	if (state->ident == SAA7129)
 		saa7127_write_inittab(sd, saa7129_init_config_extra);
 	return 0;
 }
@@ -823,7 +805,6 @@ static int saa7127_remove(struct i2c_client *client)
 	v4l2_device_unregister_subdev(sd);
 	/* Turn off TV output */
 	saa7127_set_video_enable(sd, 0);
-	kfree(to_state(sd));
 	return 0;
 }
 
@@ -831,10 +812,10 @@ static int saa7127_remove(struct i2c_client *client)
 
 static struct i2c_device_id saa7127_id[] = {
 	{ "saa7127_auto", 0 },	/* auto-detection */
-	{ "saa7126", V4L2_IDENT_SAA7127 },
-	{ "saa7127", V4L2_IDENT_SAA7127 },
-	{ "saa7128", V4L2_IDENT_SAA7129 },
-	{ "saa7129", V4L2_IDENT_SAA7129 },
+	{ "saa7126", SAA7127 },
+	{ "saa7127", SAA7127 },
+	{ "saa7128", SAA7129 },
+	{ "saa7129", SAA7129 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, saa7127_id);
diff --git a/drivers/media/i2c/saa717x.c b/drivers/media/i2c/saa717x.c
index cf3a0aa7e45..401ca114ab9 100644
--- a/drivers/media/i2c/saa717x.c
+++ b/drivers/media/i2c/saa717x.c
@@ -977,12 +977,6 @@ static int saa717x_s_video_routing(struct v4l2_subdev *sd,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int saa717x_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->val = saa717x_read(sd, reg->reg);
 	reg->size = 1;
 	return 0;
@@ -990,14 +984,9 @@ static int saa717x_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *
 
 static int saa717x_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	u16 addr = reg->reg & 0xffff;
 	u8 val = reg->val & 0xff;
 
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	saa717x_write(sd, addr, val);
 	return 0;
 }
@@ -1262,7 +1251,7 @@ static int saa717x_probe(struct i2c_client *client,
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		return -EIO;
 
-	decoder = kzalloc(sizeof(struct saa717x_state), GFP_KERNEL);
+	decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
 	if (decoder == NULL)
 		return -ENOMEM;
 
@@ -1276,7 +1265,6 @@ static int saa717x_probe(struct i2c_client *client,
 		id = saa717x_read(sd, 0x5a0);
 	if (id != 0xc2 && id != 0x32 && id != 0xf2 && id != 0x6c) {
 		v4l2_dbg(1, debug, sd, "saa717x not found (id=%02x)\n", id);
-		kfree(decoder);
 		return -ENODEV;
 	}
 	if (id == 0xc2)
@@ -1316,7 +1304,6 @@ static int saa717x_probe(struct i2c_client *client,
 		int err = hdl->error;
 
 		v4l2_ctrl_handler_free(hdl);
-		kfree(decoder);
 		return err;
 	}
 
@@ -1353,7 +1340,6 @@ static int saa717x_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(sd->ctrl_handler);
-	kfree(to_state(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/saa7185.c b/drivers/media/i2c/saa7185.c
index 2c6b65c76e2..f56c1c88b27 100644
--- a/drivers/media/i2c/saa7185.c
+++ b/drivers/media/i2c/saa7185.c
@@ -32,7 +32,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 
 MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
 MODULE_AUTHOR("Dave Perks");
@@ -285,17 +284,9 @@ static int saa7185_s_routing(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int saa7185_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7185, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_subdev_core_ops saa7185_core_ops = {
-	.g_chip_ident = saa7185_g_chip_ident,
 	.init = saa7185_init,
 };
 
@@ -326,7 +317,7 @@ static int saa7185_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
+	encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL);
 	if (encoder == NULL)
 		return -ENOMEM;
 	encoder->norm = V4L2_STD_NTSC;
@@ -352,7 +343,6 @@ static int saa7185_remove(struct i2c_client *client)
 	v4l2_device_unregister_subdev(sd);
 	/* SW: output off is active */
 	saa7185_write(sd, 0x61, (encoder->reg[0x61]) | 0x40);
-	kfree(encoder);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/saa7191.c b/drivers/media/i2c/saa7191.c
index d7d1670e0ca..606a4baf944 100644
--- a/drivers/media/i2c/saa7191.c
+++ b/drivers/media/i2c/saa7191.c
@@ -22,7 +22,6 @@
 #include <linux/videodev2.h>
 #include <linux/i2c.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 
 #include "saa7191.h"
 
@@ -272,7 +271,7 @@ static int saa7191_querystd(struct v4l2_subdev *sd, v4l2_std_id *norm)
 
 	dprintk("SAA7191 extended signal auto-detection...\n");
 
-	*norm = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM;
+	*norm &= V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM;
 	stdc &= ~SAA7191_STDC_SECS;
 	ctl3 &= ~(SAA7191_CTL3_FSEL);
 
@@ -303,7 +302,7 @@ static int saa7191_querystd(struct v4l2_subdev *sd, v4l2_std_id *norm)
 	if (status & SAA7191_STATUS_FIDT) {
 		/* 60Hz signal -> NTSC */
 		dprintk("60Hz signal: NTSC\n");
-		*norm = V4L2_STD_NTSC;
+		*norm &= V4L2_STD_NTSC;
 		return 0;
 	}
 
@@ -325,12 +324,13 @@ static int saa7191_querystd(struct v4l2_subdev *sd, v4l2_std_id *norm)
 	if (status & SAA7191_STATUS_FIDT) {
 		dprintk("No 50Hz signal\n");
 		saa7191_s_std(sd, old_norm);
-		return -EAGAIN;
+		*norm = V4L2_STD_UNKNOWN;
+		return 0;
 	}
 
 	if (status & SAA7191_STATUS_CODE) {
 		dprintk("PAL\n");
-		*norm = V4L2_STD_PAL;
+		*norm &= V4L2_STD_PAL;
 		return saa7191_s_std(sd, old_norm);
 	}
 
@@ -350,18 +350,19 @@ static int saa7191_querystd(struct v4l2_subdev *sd, v4l2_std_id *norm)
 	/* not 50Hz ? */
 	if (status & SAA7191_STATUS_FIDT) {
 		dprintk("No 50Hz signal\n");
-		err = -EAGAIN;
+		*norm = V4L2_STD_UNKNOWN;
 		goto out;
 	}
 
 	if (status & SAA7191_STATUS_CODE) {
 		/* Color detected -> SECAM */
 		dprintk("SECAM\n");
-		*norm = V4L2_STD_SECAM;
+		*norm &= V4L2_STD_SECAM;
 		return saa7191_s_std(sd, old_norm);
 	}
 
 	dprintk("No color detected with SECAM - Going back to PAL.\n");
+	*norm = V4L2_STD_UNKNOWN;
 
 out:
 	return saa7191_s_std(sd, old_norm);
@@ -567,18 +568,9 @@ static int saa7191_g_input_status(struct v4l2_subdev *sd, u32 *status)
 }
 
 
-static int saa7191_g_chip_ident(struct v4l2_subdev *sd,
-		struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7191, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_subdev_core_ops saa7191_core_ops = {
-	.g_chip_ident = saa7191_g_chip_ident,
 	.g_ctrl = saa7191_g_ctrl,
 	.s_ctrl = saa7191_s_ctrl,
 	.s_std = saa7191_s_std,
@@ -605,7 +597,7 @@ static int saa7191_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	decoder = kzalloc(sizeof(*decoder), GFP_KERNEL);
+	decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
 	if (!decoder)
 		return -ENOMEM;
 
@@ -615,7 +607,6 @@ static int saa7191_probe(struct i2c_client *client,
 	err = saa7191_write_block(sd, sizeof(initseq), initseq);
 	if (err) {
 		printk(KERN_ERR "SAA7191 initialization failed\n");
-		kfree(decoder);
 		return err;
 	}
 
@@ -636,7 +627,6 @@ static int saa7191_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_saa7191(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index cae4f468385..7ac7580f85c 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2383,8 +2383,9 @@ static int smiapp_registered(struct v4l2_subdev *subdev)
 	}
 
 	if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN) {
-		if (gpio_request_one(sensor->platform_data->xshutdown, 0,
-				     "SMIA++ xshutdown") != 0) {
+		if (devm_gpio_request_one(&client->dev,
+					  sensor->platform_data->xshutdown, 0,
+					  "SMIA++ xshutdown") != 0) {
 			dev_err(&client->dev,
 				"unable to acquire reset gpio %d\n",
 				sensor->platform_data->xshutdown);
@@ -2393,10 +2394,8 @@ static int smiapp_registered(struct v4l2_subdev *subdev)
 	}
 
 	rval = smiapp_power_on(sensor);
-	if (rval) {
-		rval = -ENODEV;
-		goto out_smiapp_power_on;
-	}
+	if (rval)
+		return -ENODEV;
 
 	rval = smiapp_identify_module(subdev);
 	if (rval) {
@@ -2656,11 +2655,6 @@ out_ident_release:
 
 out_power_off:
 	smiapp_power_off(sensor);
-
-out_smiapp_power_on:
-	if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN)
-		gpio_free(sensor->platform_data->xshutdown);
-
 	return rval;
 }
 
@@ -2854,12 +2848,10 @@ static int smiapp_remove(struct i2c_client *client)
 		device_remove_file(&client->dev, &dev_attr_nvm);
 
 	for (i = 0; i < sensor->ssds_used; i++) {
-		media_entity_cleanup(&sensor->ssds[i].sd.entity);
 		v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
+		media_entity_cleanup(&sensor->ssds[i].sd.entity);
 	}
 	smiapp_free_controls(sensor);
-	if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN)
-		gpio_free(sensor->platform_data->xshutdown);
 
 	return 0;
 }
diff --git a/drivers/media/i2c/soc_camera/imx074.c b/drivers/media/i2c/soc_camera/imx074.c
index a2a5cbbdbe2..1d384a371b4 100644
--- a/drivers/media/i2c/soc_camera/imx074.c
+++ b/drivers/media/i2c/soc_camera/imx074.c
@@ -18,8 +18,9 @@
 #include <linux/module.h>
 
 #include <media/soc_camera.h>
+#include <media/v4l2-async.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-subdev.h>
-#include <media/v4l2-chip-ident.h>
 
 /* IMX074 registers */
 
@@ -77,6 +78,7 @@ struct imx074_datafmt {
 struct imx074 {
 	struct v4l2_subdev		subdev;
 	const struct imx074_datafmt	*fmt;
+	struct v4l2_clk			*clk;
 };
 
 static const struct imx074_datafmt imx074_colour_fmts[] = {
@@ -251,29 +253,13 @@ static int imx074_s_stream(struct v4l2_subdev *sd, int enable)
 	return reg_write(client, MODE_SELECT, !!enable);
 }
 
-static int imx074_g_chip_ident(struct v4l2_subdev *sd,
-			       struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
-		return -EINVAL;
-
-	if (id->match.addr != client->addr)
-		return -ENODEV;
-
-	id->ident	= V4L2_IDENT_IMX074;
-	id->revision	= 0;
-
-	return 0;
-}
-
 static int imx074_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct imx074 *priv = to_imx074(client);
 
-	return soc_camera_set_power(&client->dev, ssdd, on);
+	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
 }
 
 static int imx074_g_mbus_config(struct v4l2_subdev *sd,
@@ -299,7 +285,6 @@ static struct v4l2_subdev_video_ops imx074_subdev_video_ops = {
 };
 
 static struct v4l2_subdev_core_ops imx074_subdev_core_ops = {
-	.g_chip_ident	= imx074_g_chip_ident,
 	.s_power	= imx074_s_power,
 };
 
@@ -431,6 +416,7 @@ static int imx074_probe(struct i2c_client *client,
 	struct imx074 *priv;
 	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	int ret;
 
 	if (!ssdd) {
 		dev_err(&client->dev, "IMX074: missing platform data!\n");
@@ -451,12 +437,35 @@ static int imx074_probe(struct i2c_client *client,
 
 	priv->fmt	= &imx074_colour_fmts[0];
 
-	return imx074_video_probe(client);
+	priv->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(priv->clk)) {
+		dev_info(&client->dev, "Error %ld getting clock\n", PTR_ERR(priv->clk));
+		return -EPROBE_DEFER;
+	}
+
+	ret = soc_camera_power_init(&client->dev, ssdd);
+	if (ret < 0)
+		goto epwrinit;
+
+	ret = imx074_video_probe(client);
+	if (ret < 0)
+		goto eprobe;
+
+	return v4l2_async_register_subdev(&priv->subdev);
+
+epwrinit:
+eprobe:
+	v4l2_clk_put(priv->clk);
+	return ret;
 }
 
 static int imx074_remove(struct i2c_client *client)
 {
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct imx074 *priv = to_imx074(client);
+
+	v4l2_async_unregister_subdev(&priv->subdev);
+	v4l2_clk_put(priv->clk);
 
 	if (ssdd->free_bus)
 		ssdd->free_bus(ssdd);
diff --git a/drivers/media/i2c/soc_camera/mt9m001.c b/drivers/media/i2c/soc_camera/mt9m001.c
index dd908980575..df97033fa6e 100644
--- a/drivers/media/i2c/soc_camera/mt9m001.c
+++ b/drivers/media/i2c/soc_camera/mt9m001.c
@@ -16,8 +16,8 @@
 
 #include <media/soc_camera.h>
 #include <media/soc_mediabus.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-subdev.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 /*
@@ -94,10 +94,10 @@ struct mt9m001 {
 		struct v4l2_ctrl *exposure;
 	};
 	struct v4l2_rect rect;	/* Sensor window */
+	struct v4l2_clk *clk;
 	const struct mt9m001_datafmt *fmt;
 	const struct mt9m001_datafmt *fmts;
 	int num_fmts;
-	int model;	/* V4L2_IDENT_MT9M001* codes from v4l2-chip-ident.h */
 	unsigned int total_h;
 	unsigned short y_skip_top;	/* Lines to skip at the top */
 };
@@ -320,36 +320,15 @@ static int mt9m001_try_fmt(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int mt9m001_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-	struct mt9m001 *mt9m001 = to_mt9m001(client);
-
-	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
-		return -EINVAL;
-
-	if (id->match.addr != client->addr)
-		return -ENODEV;
-
-	id->ident	= mt9m001->model;
-	id->revision	= 0;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int mt9m001_g_register(struct v4l2_subdev *sd,
 			      struct v4l2_dbg_register *reg)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+	if (reg->reg > 0xff)
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
 	reg->size = 2;
 	reg->val = reg_read(client, reg->reg);
 
@@ -364,12 +343,9 @@ static int mt9m001_s_register(struct v4l2_subdev *sd,
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+	if (reg->reg > 0xff)
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
 	if (reg_write(client, reg->reg, reg->val) < 0)
 		return -EIO;
 
@@ -381,8 +357,9 @@ static int mt9m001_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct mt9m001 *mt9m001 = to_mt9m001(client);
 
-	return soc_camera_set_power(&client->dev, ssdd, on);
+	return soc_camera_set_power(&client->dev, ssdd, mt9m001->clk, on);
 }
 
 static int mt9m001_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
@@ -505,11 +482,9 @@ static int mt9m001_video_probe(struct soc_camera_subdev_desc *ssdd,
 	switch (data) {
 	case 0x8411:
 	case 0x8421:
-		mt9m001->model = V4L2_IDENT_MT9M001C12ST;
 		mt9m001->fmts = mt9m001_colour_fmts;
 		break;
 	case 0x8431:
-		mt9m001->model = V4L2_IDENT_MT9M001C12STM;
 		mt9m001->fmts = mt9m001_monochrome_fmts;
 		break;
 	default:
@@ -580,7 +555,6 @@ static const struct v4l2_ctrl_ops mt9m001_ctrl_ops = {
 };
 
 static struct v4l2_subdev_core_ops mt9m001_subdev_core_ops = {
-	.g_chip_ident	= mt9m001_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= mt9m001_g_register,
 	.s_register	= mt9m001_s_register,
@@ -710,9 +684,18 @@ static int mt9m001_probe(struct i2c_client *client,
 	mt9m001->rect.width	= MT9M001_MAX_WIDTH;
 	mt9m001->rect.height	= MT9M001_MAX_HEIGHT;
 
+	mt9m001->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(mt9m001->clk)) {
+		ret = PTR_ERR(mt9m001->clk);
+		goto eclkget;
+	}
+
 	ret = mt9m001_video_probe(ssdd, client);
-	if (ret)
+	if (ret) {
+		v4l2_clk_put(mt9m001->clk);
+eclkget:
 		v4l2_ctrl_handler_free(&mt9m001->hdl);
+	}
 
 	return ret;
 }
@@ -722,6 +705,7 @@ static int mt9m001_remove(struct i2c_client *client)
 	struct mt9m001 *mt9m001 = to_mt9m001(client);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
 
+	v4l2_clk_put(mt9m001->clk);
 	v4l2_device_unregister_subdev(&mt9m001->subdev);
 	v4l2_ctrl_handler_free(&mt9m001->hdl);
 	mt9m001_video_remove(ssdd);
diff --git a/drivers/media/i2c/soc_camera/mt9m111.c b/drivers/media/i2c/soc_camera/mt9m111.c
index 8bd4e0d2ea0..de3605df47c 100644
--- a/drivers/media/i2c/soc_camera/mt9m111.c
+++ b/drivers/media/i2c/soc_camera/mt9m111.c
@@ -17,9 +17,9 @@
 #include <linux/module.h>
 
 #include <media/soc_camera.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-ctrls.h>
-#include <media/v4l2-chip-ident.h>
 
 /*
  * MT9M111, MT9M112 and MT9M131:
@@ -205,10 +205,9 @@ struct mt9m111 {
 	struct v4l2_subdev subdev;
 	struct v4l2_ctrl_handler hdl;
 	struct v4l2_ctrl *gain;
-	int model;	/* V4L2_IDENT_MT9M111 or V4L2_IDENT_MT9M112 code
-			 * from v4l2-chip-ident.h */
 	struct mt9m111_context *ctx;
 	struct v4l2_rect rect;	/* cropping rectangle */
+	struct v4l2_clk *clk;
 	int width;		/* output */
 	int height;		/* sizes */
 	struct mutex power_lock; /* lock to protect power_count */
@@ -600,24 +599,6 @@ static int mt9m111_s_fmt(struct v4l2_subdev *sd,
 	return ret;
 }
 
-static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-	struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
-
-	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
-		return -EINVAL;
-
-	if (id->match.addr != client->addr)
-		return -ENODEV;
-
-	id->ident	= mt9m111->model;
-	id->revision	= 0;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int mt9m111_g_register(struct v4l2_subdev *sd,
 			      struct v4l2_dbg_register *reg)
@@ -625,10 +606,8 @@ static int mt9m111_g_register(struct v4l2_subdev *sd,
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	int val;
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
+	if (reg->reg > 0x2ff)
 		return -EINVAL;
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
 
 	val = mt9m111_reg_read(client, reg->reg);
 	reg->size = 2;
@@ -645,12 +624,9 @@ static int mt9m111_s_register(struct v4l2_subdev *sd,
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
+	if (reg->reg > 0x2ff)
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
 	if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
 		return -EIO;
 
@@ -801,14 +777,14 @@ static int mt9m111_power_on(struct mt9m111 *mt9m111)
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
 	int ret;
 
-	ret = soc_camera_power_on(&client->dev, ssdd);
+	ret = soc_camera_power_on(&client->dev, ssdd, mt9m111->clk);
 	if (ret < 0)
 		return ret;
 
 	ret = mt9m111_resume(mt9m111);
 	if (ret < 0) {
 		dev_err(&client->dev, "Failed to resume the sensor: %d\n", ret);
-		soc_camera_power_off(&client->dev, ssdd);
+		soc_camera_power_off(&client->dev, ssdd, mt9m111->clk);
 	}
 
 	return ret;
@@ -820,7 +796,7 @@ static void mt9m111_power_off(struct mt9m111 *mt9m111)
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
 
 	mt9m111_suspend(mt9m111);
-	soc_camera_power_off(&client->dev, ssdd);
+	soc_camera_power_off(&client->dev, ssdd, mt9m111->clk);
 }
 
 static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
@@ -856,7 +832,6 @@ static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
 };
 
 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
-	.g_chip_ident	= mt9m111_g_chip_ident,
 	.s_power	= mt9m111_s_power,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= mt9m111_g_register,
@@ -923,12 +898,10 @@ static int mt9m111_video_probe(struct i2c_client *client)
 
 	switch (data) {
 	case 0x143a: /* MT9M111 or MT9M131 */
-		mt9m111->model = V4L2_IDENT_MT9M111;
 		dev_info(&client->dev,
 			"Detected a MT9M111/MT9M131 chip ID %x\n", data);
 		break;
 	case 0x148c: /* MT9M112 */
-		mt9m111->model = V4L2_IDENT_MT9M112;
 		dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
 		break;
 	default:
@@ -1002,9 +975,18 @@ static int mt9m111_probe(struct i2c_client *client,
 	mt9m111->lastpage	= -1;
 	mutex_init(&mt9m111->power_lock);
 
+	mt9m111->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(mt9m111->clk)) {
+		ret = PTR_ERR(mt9m111->clk);
+		goto eclkget;
+	}
+
 	ret = mt9m111_video_probe(client);
-	if (ret)
+	if (ret) {
+		v4l2_clk_put(mt9m111->clk);
+eclkget:
 		v4l2_ctrl_handler_free(&mt9m111->hdl);
+	}
 
 	return ret;
 }
@@ -1013,6 +995,7 @@ static int mt9m111_remove(struct i2c_client *client)
 {
 	struct mt9m111 *mt9m111 = to_mt9m111(client);
 
+	v4l2_clk_put(mt9m111->clk);
 	v4l2_device_unregister_subdev(&mt9m111->subdev);
 	v4l2_ctrl_handler_free(&mt9m111->hdl);
 
diff --git a/drivers/media/i2c/soc_camera/mt9t031.c b/drivers/media/i2c/soc_camera/mt9t031.c
index 26a15b87a9a..47d18d0bafe 100644
--- a/drivers/media/i2c/soc_camera/mt9t031.c
+++ b/drivers/media/i2c/soc_camera/mt9t031.c
@@ -18,7 +18,7 @@
 #include <linux/module.h>
 
 #include <media/soc_camera.h>
-#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-subdev.h>
 #include <media/v4l2-ctrls.h>
 
@@ -76,7 +76,7 @@ struct mt9t031 {
 		struct v4l2_ctrl *exposure;
 	};
 	struct v4l2_rect rect;	/* Sensor window */
-	int model;	/* V4L2_IDENT_MT9T031* codes from v4l2-chip-ident.h */
+	struct v4l2_clk *clk;
 	u16 xskip;
 	u16 yskip;
 	unsigned int total_h;
@@ -391,36 +391,16 @@ static int mt9t031_try_fmt(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int mt9t031_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-	struct mt9t031 *mt9t031 = to_mt9t031(client);
-
-	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
-		return -EINVAL;
-
-	if (id->match.addr != client->addr)
-		return -ENODEV;
-
-	id->ident	= mt9t031->model;
-	id->revision	= 0;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int mt9t031_g_register(struct v4l2_subdev *sd,
 			      struct v4l2_dbg_register *reg)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+	if (reg->reg > 0xff)
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
+	reg->size = 1;
 	reg->val = reg_read(client, reg->reg);
 
 	if (reg->val > 0xffff)
@@ -434,12 +414,9 @@ static int mt9t031_s_register(struct v4l2_subdev *sd,
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+	if (reg->reg > 0xff)
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
 	if (reg_write(client, reg->reg, reg->val) < 0)
 		return -EIO;
 
@@ -595,7 +572,7 @@ static int mt9t031_runtime_resume(struct device *dev)
 	return 0;
 }
 
-static struct dev_pm_ops mt9t031_dev_pm_ops = {
+static const struct dev_pm_ops mt9t031_dev_pm_ops = {
 	.runtime_suspend	= mt9t031_runtime_suspend,
 	.runtime_resume		= mt9t031_runtime_resume,
 };
@@ -610,16 +587,17 @@ static int mt9t031_s_power(struct v4l2_subdev *sd, int on)
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
 	struct video_device *vdev = soc_camera_i2c_to_vdev(client);
+	struct mt9t031 *mt9t031 = to_mt9t031(client);
 	int ret;
 
 	if (on) {
-		ret = soc_camera_power_on(&client->dev, ssdd);
+		ret = soc_camera_power_on(&client->dev, ssdd, mt9t031->clk);
 		if (ret < 0)
 			return ret;
 		vdev->dev.type = &mt9t031_dev_type;
 	} else {
 		vdev->dev.type = NULL;
-		soc_camera_power_off(&client->dev, ssdd);
+		soc_camera_power_off(&client->dev, ssdd, mt9t031->clk);
 	}
 
 	return 0;
@@ -650,7 +628,6 @@ static int mt9t031_video_probe(struct i2c_client *client)
 
 	switch (data) {
 	case 0x1621:
-		mt9t031->model = V4L2_IDENT_MT9T031;
 		break;
 	default:
 		dev_err(&client->dev,
@@ -685,7 +662,6 @@ static const struct v4l2_ctrl_ops mt9t031_ctrl_ops = {
 };
 
 static struct v4l2_subdev_core_ops mt9t031_subdev_core_ops = {
-	.g_chip_ident	= mt9t031_g_chip_ident,
 	.s_power	= mt9t031_s_power,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= mt9t031_g_register,
@@ -812,9 +788,18 @@ static int mt9t031_probe(struct i2c_client *client,
 	mt9t031->xskip = 1;
 	mt9t031->yskip = 1;
 
+	mt9t031->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(mt9t031->clk)) {
+		ret = PTR_ERR(mt9t031->clk);
+		goto eclkget;
+	}
+
 	ret = mt9t031_video_probe(client);
-	if (ret)
+	if (ret) {
+		v4l2_clk_put(mt9t031->clk);
+eclkget:
 		v4l2_ctrl_handler_free(&mt9t031->hdl);
+	}
 
 	return ret;
 }
@@ -823,6 +808,7 @@ static int mt9t031_remove(struct i2c_client *client)
 {
 	struct mt9t031 *mt9t031 = to_mt9t031(client);
 
+	v4l2_clk_put(mt9t031->clk);
 	v4l2_device_unregister_subdev(&mt9t031->subdev);
 	v4l2_ctrl_handler_free(&mt9t031->hdl);
 
diff --git a/drivers/media/i2c/soc_camera/mt9t112.c b/drivers/media/i2c/soc_camera/mt9t112.c
index a7256b73280..46f431a1378 100644
--- a/drivers/media/i2c/soc_camera/mt9t112.c
+++ b/drivers/media/i2c/soc_camera/mt9t112.c
@@ -27,7 +27,7 @@
 
 #include <media/mt9t112.h>
 #include <media/soc_camera.h>
-#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-common.h>
 
 /* you can check PLL/clock info */
@@ -90,8 +90,8 @@ struct mt9t112_priv {
 	struct mt9t112_camera_info	*info;
 	struct i2c_client		*client;
 	struct v4l2_rect		 frame;
+	struct v4l2_clk			*clk;
 	const struct mt9t112_format	*format;
-	int				 model;
 	int				 num_formats;
 	u32				 flags;
 /* for flags */
@@ -738,17 +738,6 @@ static int mt9t112_init_camera(const struct i2c_client *client)
 /************************************************************************
 			v4l2_subdev_core_ops
 ************************************************************************/
-static int mt9t112_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-	struct mt9t112_priv *priv = to_mt9t112(client);
-
-	id->ident    = priv->model;
-	id->revision = 0;
-
-	return 0;
-}
 
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int mt9t112_g_register(struct v4l2_subdev *sd,
@@ -781,12 +770,12 @@ static int mt9t112_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct mt9t112_priv *priv = to_mt9t112(client);
 
-	return soc_camera_set_power(&client->dev, ssdd, on);
+	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
 }
 
 static struct v4l2_subdev_core_ops mt9t112_subdev_core_ops = {
-	.g_chip_ident	= mt9t112_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= mt9t112_g_register,
 	.s_register	= mt9t112_s_register,
@@ -1061,12 +1050,10 @@ static int mt9t112_camera_probe(struct i2c_client *client)
 	switch (chipid) {
 	case 0x2680:
 		devname = "mt9t111";
-		priv->model = V4L2_IDENT_MT9T111;
 		priv->num_formats = 1;
 		break;
 	case 0x2682:
 		devname = "mt9t112";
-		priv->model = V4L2_IDENT_MT9T112;
 		priv->num_formats = ARRAY_SIZE(mt9t112_cfmts);
 		break;
 	default:
@@ -1108,18 +1095,26 @@ static int mt9t112_probe(struct i2c_client *client,
 
 	v4l2_i2c_subdev_init(&priv->subdev, client, &mt9t112_subdev_ops);
 
+	priv->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(priv->clk))
+		return PTR_ERR(priv->clk);
+
 	ret = mt9t112_camera_probe(client);
-	if (ret)
-		return ret;
 
 	/* Cannot fail: using the default supported pixel code */
-	mt9t112_set_params(priv, &rect, V4L2_MBUS_FMT_UYVY8_2X8);
+	if (!ret)
+		mt9t112_set_params(priv, &rect, V4L2_MBUS_FMT_UYVY8_2X8);
+	else
+		v4l2_clk_put(priv->clk);
 
 	return ret;
 }
 
 static int mt9t112_remove(struct i2c_client *client)
 {
+	struct mt9t112_priv *priv = to_mt9t112(client);
+
+	v4l2_clk_put(priv->clk);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/soc_camera/mt9v022.c b/drivers/media/i2c/soc_camera/mt9v022.c
index a295e598486..f9f95f815b1 100644
--- a/drivers/media/i2c/soc_camera/mt9v022.c
+++ b/drivers/media/i2c/soc_camera/mt9v022.c
@@ -19,7 +19,7 @@
 #include <media/soc_camera.h>
 #include <media/soc_mediabus.h>
 #include <media/v4l2-subdev.h>
-#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-ctrls.h>
 
 /*
@@ -133,6 +133,11 @@ static const struct mt9v02x_register mt9v024_register = {
 	.pixclk_fv_lv			= MT9V024_PIXCLK_FV_LV,
 };
 
+enum mt9v022_model {
+	MT9V022IX7ATM,
+	MT9V022IX7ATC,
+};
+
 struct mt9v022 {
 	struct v4l2_subdev subdev;
 	struct v4l2_ctrl_handler hdl;
@@ -149,11 +154,12 @@ struct mt9v022 {
 	struct v4l2_ctrl *hblank;
 	struct v4l2_ctrl *vblank;
 	struct v4l2_rect rect;	/* Sensor window */
+	struct v4l2_clk *clk;
 	const struct mt9v022_datafmt *fmt;
 	const struct mt9v022_datafmt *fmts;
 	const struct mt9v02x_register *reg;
 	int num_fmts;
-	int model;	/* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */
+	enum mt9v022_model model;
 	u16 chip_control;
 	u16 chip_version;
 	unsigned short y_skip_top;	/* Lines to skip at the top */
@@ -406,12 +412,12 @@ static int mt9v022_s_fmt(struct v4l2_subdev *sd,
 	switch (mf->code) {
 	case V4L2_MBUS_FMT_Y8_1X8:
 	case V4L2_MBUS_FMT_Y10_1X10:
-		if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM)
+		if (mt9v022->model != MT9V022IX7ATM)
 			return -EINVAL;
 		break;
 	case V4L2_MBUS_FMT_SBGGR8_1X8:
 	case V4L2_MBUS_FMT_SBGGR10_1X10:
-		if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC)
+		if (mt9v022->model != MT9V022IX7ATC)
 			return -EINVAL;
 		break;
 	default:
@@ -457,36 +463,15 @@ static int mt9v022_try_fmt(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int mt9v022_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-	struct mt9v022 *mt9v022 = to_mt9v022(client);
-
-	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
-		return -EINVAL;
-
-	if (id->match.addr != client->addr)
-		return -ENODEV;
-
-	id->ident	= mt9v022->model;
-	id->revision	= 0;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int mt9v022_g_register(struct v4l2_subdev *sd,
 			      struct v4l2_dbg_register *reg)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+	if (reg->reg > 0xff)
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
 	reg->size = 2;
 	reg->val = reg_read(client, reg->reg);
 
@@ -501,12 +486,9 @@ static int mt9v022_s_register(struct v4l2_subdev *sd,
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+	if (reg->reg > 0xff)
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
 	if (reg_write(client, reg->reg, reg->val) < 0)
 		return -EIO;
 
@@ -518,8 +500,9 @@ static int mt9v022_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct mt9v022 *mt9v022 = to_mt9v022(client);
 
-	return soc_camera_set_power(&client->dev, ssdd, on);
+	return soc_camera_set_power(&client->dev, ssdd, mt9v022->clk, on);
 }
 
 static int mt9v022_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
@@ -706,11 +689,11 @@ static int mt9v022_video_probe(struct i2c_client *client)
 	if (sensor_type && (!strcmp("colour", sensor_type) ||
 			    !strcmp("color", sensor_type))) {
 		ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11);
-		mt9v022->model = V4L2_IDENT_MT9V022IX7ATC;
+		mt9v022->model = MT9V022IX7ATC;
 		mt9v022->fmts = mt9v022_colour_fmts;
 	} else {
 		ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11);
-		mt9v022->model = V4L2_IDENT_MT9V022IX7ATM;
+		mt9v022->model = MT9V022IX7ATM;
 		mt9v022->fmts = mt9v022_monochrome_fmts;
 	}
 
@@ -740,7 +723,7 @@ static int mt9v022_video_probe(struct i2c_client *client)
 	mt9v022->fmt = &mt9v022->fmts[0];
 
 	dev_info(&client->dev, "Detected a MT9V022 chip ID %x, %s sensor\n",
-		 data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ?
+		 data, mt9v022->model == MT9V022IX7ATM ?
 		 "monochrome" : "colour");
 
 	ret = mt9v022_init(client);
@@ -768,7 +751,6 @@ static const struct v4l2_ctrl_ops mt9v022_ctrl_ops = {
 };
 
 static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = {
-	.g_chip_ident	= mt9v022_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= mt9v022_g_register,
 	.s_register	= mt9v022_s_register,
@@ -957,9 +939,18 @@ static int mt9v022_probe(struct i2c_client *client,
 	mt9v022->rect.width	= MT9V022_MAX_WIDTH;
 	mt9v022->rect.height	= MT9V022_MAX_HEIGHT;
 
+	mt9v022->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(mt9v022->clk)) {
+		ret = PTR_ERR(mt9v022->clk);
+		goto eclkget;
+	}
+
 	ret = mt9v022_video_probe(client);
-	if (ret)
+	if (ret) {
+		v4l2_clk_put(mt9v022->clk);
+eclkget:
 		v4l2_ctrl_handler_free(&mt9v022->hdl);
+	}
 
 	return ret;
 }
@@ -969,6 +960,7 @@ static int mt9v022_remove(struct i2c_client *client)
 	struct mt9v022 *mt9v022 = to_mt9v022(client);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
 
+	v4l2_clk_put(mt9v022->clk);
 	v4l2_device_unregister_subdev(&mt9v022->subdev);
 	if (ssdd->free_bus)
 		ssdd->free_bus(ssdd);
diff --git a/drivers/media/i2c/soc_camera/ov2640.c b/drivers/media/i2c/soc_camera/ov2640.c
index e3168424f9b..6c6b1c3b45e 100644
--- a/drivers/media/i2c/soc_camera/ov2640.c
+++ b/drivers/media/i2c/soc_camera/ov2640.c
@@ -22,7 +22,7 @@
 #include <linux/videodev2.h>
 
 #include <media/soc_camera.h>
-#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-subdev.h>
 #include <media/v4l2-ctrls.h>
 
@@ -303,8 +303,8 @@ struct ov2640_priv {
 	struct v4l2_subdev		subdev;
 	struct v4l2_ctrl_handler	hdl;
 	enum v4l2_mbus_pixelcode	cfmt_code;
+	struct v4l2_clk			*clk;
 	const struct ov2640_win_size	*win;
-	int				model;
 };
 
 /*
@@ -723,18 +723,6 @@ static int ov2640_s_ctrl(struct v4l2_ctrl *ctrl)
 	return -EINVAL;
 }
 
-static int ov2640_g_chip_ident(struct v4l2_subdev *sd,
-			       struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-	struct ov2640_priv *priv = to_ov2640(client);
-
-	id->ident    = priv->model;
-	id->revision = 0;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int ov2640_g_register(struct v4l2_subdev *sd,
 			     struct v4l2_dbg_register *reg)
@@ -772,8 +760,9 @@ static int ov2640_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct ov2640_priv *priv = to_ov2640(client);
 
-	return soc_camera_set_power(&client->dev, ssdd, on);
+	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
 }
 
 /* Select the nearest higher resolution for capture */
@@ -1009,7 +998,6 @@ static int ov2640_video_probe(struct i2c_client *client)
 	switch (VERSION(pid, ver)) {
 	case PID_OV2640:
 		devname     = "ov2640";
-		priv->model = V4L2_IDENT_OV2640;
 		break;
 	default:
 		dev_err(&client->dev,
@@ -1034,7 +1022,6 @@ static const struct v4l2_ctrl_ops ov2640_ctrl_ops = {
 };
 
 static struct v4l2_subdev_core_ops ov2640_subdev_core_ops = {
-	.g_chip_ident	= ov2640_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= ov2640_g_register,
 	.s_register	= ov2640_s_register,
@@ -1113,11 +1100,20 @@ static int ov2640_probe(struct i2c_client *client,
 	if (priv->hdl.error)
 		return priv->hdl.error;
 
+	priv->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(priv->clk)) {
+		ret = PTR_ERR(priv->clk);
+		goto eclkget;
+	}
+
 	ret = ov2640_video_probe(client);
-	if (ret)
+	if (ret) {
+		v4l2_clk_put(priv->clk);
+eclkget:
 		v4l2_ctrl_handler_free(&priv->hdl);
-	else
+	} else {
 		dev_info(&adapter->dev, "OV2640 Probed\n");
+	}
 
 	return ret;
 }
@@ -1126,6 +1122,7 @@ static int ov2640_remove(struct i2c_client *client)
 {
 	struct ov2640_priv       *priv = to_ov2640(client);
 
+	v4l2_clk_put(priv->clk);
 	v4l2_device_unregister_subdev(&priv->subdev);
 	v4l2_ctrl_handler_free(&priv->hdl);
 	return 0;
diff --git a/drivers/media/i2c/soc_camera/ov5642.c b/drivers/media/i2c/soc_camera/ov5642.c
index 9aa56de69ee..0a5c5d4fedd 100644
--- a/drivers/media/i2c/soc_camera/ov5642.c
+++ b/drivers/media/i2c/soc_camera/ov5642.c
@@ -24,7 +24,7 @@
 #include <linux/v4l2-mediabus.h>
 
 #include <media/soc_camera.h>
-#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-subdev.h>
 
 /* OV5642 registers */
@@ -610,6 +610,7 @@ struct ov5642 {
 	struct v4l2_subdev		subdev;
 	const struct ov5642_datafmt	*fmt;
 	struct v4l2_rect                crop_rect;
+	struct v4l2_clk			*clk;
 
 	/* blanking information */
 	int total_width;
@@ -848,23 +849,6 @@ static int ov5642_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
 	return 0;
 }
 
-static int ov5642_g_chip_ident(struct v4l2_subdev *sd,
-			       struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
-		return -EINVAL;
-
-	if (id->match.addr != client->addr)
-		return -ENODEV;
-
-	id->ident	= V4L2_IDENT_OV5642;
-	id->revision	= 0;
-
-	return 0;
-}
-
 static int ov5642_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
@@ -935,12 +919,13 @@ static int ov5642_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct ov5642 *priv = to_ov5642(client);
 	int ret;
 
 	if (!on)
-		return soc_camera_power_off(&client->dev, ssdd);
+		return soc_camera_power_off(&client->dev, ssdd, priv->clk);
 
-	ret = soc_camera_power_on(&client->dev, ssdd);
+	ret = soc_camera_power_on(&client->dev, ssdd, priv->clk);
 	if (ret < 0)
 		return ret;
 
@@ -966,7 +951,6 @@ static struct v4l2_subdev_video_ops ov5642_subdev_video_ops = {
 
 static struct v4l2_subdev_core_ops ov5642_subdev_core_ops = {
 	.s_power	= ov5642_s_power,
-	.g_chip_ident	= ov5642_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= ov5642_get_register,
 	.s_register	= ov5642_set_register,
@@ -1021,6 +1005,7 @@ static int ov5642_probe(struct i2c_client *client,
 {
 	struct ov5642 *priv;
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	int ret;
 
 	if (!ssdd) {
 		dev_err(&client->dev, "OV5642: missing platform data!\n");
@@ -1042,13 +1027,23 @@ static int ov5642_probe(struct i2c_client *client,
 	priv->total_width = OV5642_DEFAULT_WIDTH + BLANKING_EXTRA_WIDTH;
 	priv->total_height = BLANKING_MIN_HEIGHT;
 
-	return ov5642_video_probe(client);
+	priv->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(priv->clk))
+		return PTR_ERR(priv->clk);
+
+	ret = ov5642_video_probe(client);
+	if (ret < 0)
+		v4l2_clk_put(priv->clk);
+
+	return ret;
 }
 
 static int ov5642_remove(struct i2c_client *client)
 {
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct ov5642 *priv = to_ov5642(client);
 
+	v4l2_clk_put(priv->clk);
 	if (ssdd->free_bus)
 		ssdd->free_bus(ssdd);
 
diff --git a/drivers/media/i2c/soc_camera/ov6650.c b/drivers/media/i2c/soc_camera/ov6650.c
index 991202d4bba..ab01598ec83 100644
--- a/drivers/media/i2c/soc_camera/ov6650.c
+++ b/drivers/media/i2c/soc_camera/ov6650.c
@@ -32,7 +32,7 @@
 #include <linux/module.h>
 
 #include <media/soc_camera.h>
-#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-ctrls.h>
 
 /* Register definitions */
@@ -196,6 +196,7 @@ struct ov6650 {
 		struct v4l2_ctrl *blue;
 		struct v4l2_ctrl *red;
 	};
+	struct v4l2_clk		*clk;
 	bool			half_scale;	/* scale down output by 2 */
 	struct v4l2_rect	rect;		/* sensor cropping window */
 	unsigned long		pclk_limit;	/* from host */
@@ -390,16 +391,6 @@ static int ov6550_s_ctrl(struct v4l2_ctrl *ctrl)
 	return -EINVAL;
 }
 
-/* Get chip identification */
-static int ov6650_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *id)
-{
-	id->ident	= V4L2_IDENT_OV6650;
-	id->revision	= 0;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int ov6650_get_register(struct v4l2_subdev *sd,
 				struct v4l2_dbg_register *reg)
@@ -436,8 +427,9 @@ static int ov6650_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct ov6650 *priv = to_ov6650(client);
 
-	return soc_camera_set_power(&client->dev, ssdd, on);
+	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
 }
 
 static int ov6650_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
@@ -879,7 +871,6 @@ static const struct v4l2_ctrl_ops ov6550_ctrl_ops = {
 };
 
 static struct v4l2_subdev_core_ops ov6650_core_ops = {
-	.g_chip_ident		= ov6650_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register		= ov6650_get_register,
 	.s_register		= ov6650_set_register,
@@ -1025,9 +1016,18 @@ static int ov6650_probe(struct i2c_client *client,
 	priv->code	  = V4L2_MBUS_FMT_YUYV8_2X8;
 	priv->colorspace  = V4L2_COLORSPACE_JPEG;
 
+	priv->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(priv->clk)) {
+		ret = PTR_ERR(priv->clk);
+		goto eclkget;
+	}
+
 	ret = ov6650_video_probe(client);
-	if (ret)
+	if (ret) {
+		v4l2_clk_put(priv->clk);
+eclkget:
 		v4l2_ctrl_handler_free(&priv->hdl);
+	}
 
 	return ret;
 }
@@ -1036,6 +1036,7 @@ static int ov6650_remove(struct i2c_client *client)
 {
 	struct ov6650 *priv = to_ov6650(client);
 
+	v4l2_clk_put(priv->clk);
 	v4l2_device_unregister_subdev(&priv->subdev);
 	v4l2_ctrl_handler_free(&priv->hdl);
 	return 0;
diff --git a/drivers/media/i2c/soc_camera/ov772x.c b/drivers/media/i2c/soc_camera/ov772x.c
index 713d62e349f..7f2b3c8926a 100644
--- a/drivers/media/i2c/soc_camera/ov772x.c
+++ b/drivers/media/i2c/soc_camera/ov772x.c
@@ -26,8 +26,8 @@
 
 #include <media/ov772x.h>
 #include <media/soc_camera.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-ctrls.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-subdev.h>
 
 /*
@@ -396,10 +396,10 @@ struct ov772x_win_size {
 struct ov772x_priv {
 	struct v4l2_subdev                subdev;
 	struct v4l2_ctrl_handler	  hdl;
+	struct v4l2_clk			 *clk;
 	struct ov772x_camera_info        *info;
 	const struct ov772x_color_format *cfmt;
 	const struct ov772x_win_size     *win;
-	int                               model;
 	unsigned short                    flag_vflip:1;
 	unsigned short                    flag_hflip:1;
 	/* band_filter = COM8[5] ? 256 - BDBASE : 0 */
@@ -620,17 +620,6 @@ static int ov772x_s_ctrl(struct v4l2_ctrl *ctrl)
 	return -EINVAL;
 }
 
-static int ov772x_g_chip_ident(struct v4l2_subdev *sd,
-			       struct v4l2_dbg_chip_ident *id)
-{
-	struct ov772x_priv *priv = to_ov772x(sd);
-
-	id->ident    = priv->model;
-	id->revision = 0;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int ov772x_g_register(struct v4l2_subdev *sd,
 			     struct v4l2_dbg_register *reg)
@@ -668,8 +657,9 @@ static int ov772x_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct ov772x_priv *priv = to_ov772x(sd);
 
-	return soc_camera_set_power(&client->dev, ssdd, on);
+	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
 }
 
 static const struct ov772x_win_size *ov772x_select_win(u32 width, u32 height)
@@ -965,11 +955,9 @@ static int ov772x_video_probe(struct ov772x_priv *priv)
 	switch (VERSION(pid, ver)) {
 	case OV7720:
 		devname     = "ov7720";
-		priv->model = V4L2_IDENT_OV7720;
 		break;
 	case OV7725:
 		devname     = "ov7725";
-		priv->model = V4L2_IDENT_OV7725;
 		break;
 	default:
 		dev_err(&client->dev,
@@ -997,7 +985,6 @@ static const struct v4l2_ctrl_ops ov772x_ctrl_ops = {
 };
 
 static struct v4l2_subdev_core_ops ov772x_subdev_core_ops = {
-	.g_chip_ident	= ov772x_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= ov772x_g_register,
 	.s_register	= ov772x_s_register,
@@ -1088,13 +1075,22 @@ static int ov772x_probe(struct i2c_client *client,
 	if (priv->hdl.error)
 		return priv->hdl.error;
 
+	priv->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(priv->clk)) {
+		ret = PTR_ERR(priv->clk);
+		goto eclkget;
+	}
+
 	ret = ov772x_video_probe(priv);
 	if (ret < 0) {
+		v4l2_clk_put(priv->clk);
+eclkget:
 		v4l2_ctrl_handler_free(&priv->hdl);
 	} else {
 		priv->cfmt = &ov772x_cfmts[0];
 		priv->win = &ov772x_win_sizes[0];
 	}
+
 	return ret;
 }
 
@@ -1102,6 +1098,7 @@ static int ov772x_remove(struct i2c_client *client)
 {
 	struct ov772x_priv *priv = to_ov772x(i2c_get_clientdata(client));
 
+	v4l2_clk_put(priv->clk);
 	v4l2_device_unregister_subdev(&priv->subdev);
 	v4l2_ctrl_handler_free(&priv->hdl);
 	return 0;
diff --git a/drivers/media/i2c/soc_camera/ov9640.c b/drivers/media/i2c/soc_camera/ov9640.c
index 20ca62d371c..e968c3fdbd9 100644
--- a/drivers/media/i2c/soc_camera/ov9640.c
+++ b/drivers/media/i2c/soc_camera/ov9640.c
@@ -28,7 +28,7 @@
 #include <linux/videodev2.h>
 
 #include <media/soc_camera.h>
-#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-ctrls.h>
 
@@ -61,7 +61,7 @@ static const struct ov9640_reg ov9640_regs_dflt[] = {
 
 /* Configurations
  * NOTE: for YUV, alter the following registers:
- * 		COM12 |= OV9640_COM12_YUV_AVG
+ *		COM12 |= OV9640_COM12_YUV_AVG
  *
  *	 for RGB, alter the following registers:
  *		COM7  |= OV9640_COM7_RGB
@@ -287,18 +287,6 @@ static int ov9640_s_ctrl(struct v4l2_ctrl *ctrl)
 	return -EINVAL;
 }
 
-/* Get chip identification */
-static int ov9640_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *id)
-{
-	struct ov9640_priv *priv = to_ov9640_sensor(sd);
-
-	id->ident	= priv->model;
-	id->revision	= priv->revision;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int ov9640_get_register(struct v4l2_subdev *sd,
 				struct v4l2_dbg_register *reg)
@@ -337,8 +325,9 @@ static int ov9640_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct ov9640_priv *priv = to_ov9640_sensor(sd);
 
-	return soc_camera_set_power(&client->dev, ssdd, on);
+	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
 }
 
 /* select nearest higher resolution for capture */
@@ -615,12 +604,10 @@ static int ov9640_video_probe(struct i2c_client *client)
 	switch (VERSION(pid, ver)) {
 	case OV9640_V2:
 		devname		= "ov9640";
-		priv->model	= V4L2_IDENT_OV9640;
 		priv->revision	= 2;
 		break;
 	case OV9640_V3:
 		devname		= "ov9640";
-		priv->model	= V4L2_IDENT_OV9640;
 		priv->revision	= 3;
 		break;
 	default:
@@ -644,7 +631,6 @@ static const struct v4l2_ctrl_ops ov9640_ctrl_ops = {
 };
 
 static struct v4l2_subdev_core_ops ov9640_core_ops = {
-	.g_chip_ident		= ov9640_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register		= ov9640_get_register,
 	.s_register		= ov9640_set_register,
@@ -716,10 +702,18 @@ static int ov9640_probe(struct i2c_client *client,
 	if (priv->hdl.error)
 		return priv->hdl.error;
 
-	ret = ov9640_video_probe(client);
+	priv->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(priv->clk)) {
+		ret = PTR_ERR(priv->clk);
+		goto eclkget;
+	}
 
-	if (ret)
+	ret = ov9640_video_probe(client);
+	if (ret) {
+		v4l2_clk_put(priv->clk);
+eclkget:
 		v4l2_ctrl_handler_free(&priv->hdl);
+	}
 
 	return ret;
 }
@@ -729,6 +723,7 @@ static int ov9640_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 	struct ov9640_priv *priv = to_ov9640_sensor(sd);
 
+	v4l2_clk_put(priv->clk);
 	v4l2_device_unregister_subdev(&priv->subdev);
 	v4l2_ctrl_handler_free(&priv->hdl);
 	return 0;
diff --git a/drivers/media/i2c/soc_camera/ov9640.h b/drivers/media/i2c/soc_camera/ov9640.h
index 6b33a972c83..65d13ff1753 100644
--- a/drivers/media/i2c/soc_camera/ov9640.h
+++ b/drivers/media/i2c/soc_camera/ov9640.h
@@ -199,6 +199,7 @@ struct ov9640_reg {
 struct ov9640_priv {
 	struct v4l2_subdev		subdev;
 	struct v4l2_ctrl_handler	hdl;
+	struct v4l2_clk			*clk;
 
 	int				model;
 	int				revision;
diff --git a/drivers/media/i2c/soc_camera/ov9740.c b/drivers/media/i2c/soc_camera/ov9740.c
index 012bd627112..ea76863dfdb 100644
--- a/drivers/media/i2c/soc_camera/ov9740.c
+++ b/drivers/media/i2c/soc_camera/ov9740.c
@@ -17,7 +17,7 @@
 #include <linux/v4l2-mediabus.h>
 
 #include <media/soc_camera.h>
-#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-ctrls.h>
 
 #define to_ov9740(sd)		container_of(sd, struct ov9740_priv, subdev)
@@ -196,8 +196,8 @@ struct ov9740_reg {
 struct ov9740_priv {
 	struct v4l2_subdev		subdev;
 	struct v4l2_ctrl_handler	hdl;
+	struct v4l2_clk			*clk;
 
-	int				ident;
 	u16				model;
 	u8				revision;
 	u8				manid;
@@ -772,18 +772,6 @@ static int ov9740_s_ctrl(struct v4l2_ctrl *ctrl)
 	return 0;
 }
 
-/* Get chip identification */
-static int ov9740_g_chip_ident(struct v4l2_subdev *sd,
-			       struct v4l2_dbg_chip_ident *id)
-{
-	struct ov9740_priv *priv = to_ov9740(sd);
-
-	id->ident = priv->ident;
-	id->revision = priv->revision;
-
-	return 0;
-}
-
 static int ov9740_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
@@ -792,7 +780,7 @@ static int ov9740_s_power(struct v4l2_subdev *sd, int on)
 	int ret;
 
 	if (on) {
-		ret = soc_camera_power_on(&client->dev, ssdd);
+		ret = soc_camera_power_on(&client->dev, ssdd, priv->clk);
 		if (ret < 0)
 			return ret;
 
@@ -806,7 +794,7 @@ static int ov9740_s_power(struct v4l2_subdev *sd, int on)
 			priv->current_enable = true;
 		}
 
-		soc_camera_power_off(&client->dev, ssdd);
+		soc_camera_power_off(&client->dev, ssdd, priv->clk);
 	}
 
 	return 0;
@@ -887,8 +875,6 @@ static int ov9740_video_probe(struct i2c_client *client)
 		goto done;
 	}
 
-	priv->ident = V4L2_IDENT_OV9740;
-
 	dev_info(&client->dev, "ov9740 Model ID 0x%04x, Revision 0x%02x, "
 		 "Manufacturer 0x%02x, SMIA Version 0x%02x\n",
 		 priv->model, priv->revision, priv->manid, priv->smiaver);
@@ -927,7 +913,6 @@ static struct v4l2_subdev_video_ops ov9740_video_ops = {
 };
 
 static struct v4l2_subdev_core_ops ov9740_core_ops = {
-	.g_chip_ident		= ov9740_g_chip_ident,
 	.s_power		= ov9740_s_power,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register		= ov9740_get_register,
@@ -975,9 +960,18 @@ static int ov9740_probe(struct i2c_client *client,
 	if (priv->hdl.error)
 		return priv->hdl.error;
 
+	priv->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(priv->clk)) {
+		ret = PTR_ERR(priv->clk);
+		goto eclkget;
+	}
+
 	ret = ov9740_video_probe(client);
-	if (ret < 0)
+	if (ret < 0) {
+		v4l2_clk_put(priv->clk);
+eclkget:
 		v4l2_ctrl_handler_free(&priv->hdl);
+	}
 
 	return ret;
 }
@@ -986,6 +980,7 @@ static int ov9740_remove(struct i2c_client *client)
 {
 	struct ov9740_priv *priv = i2c_get_clientdata(client);
 
+	v4l2_clk_put(priv->clk);
 	v4l2_device_unregister_subdev(&priv->subdev);
 	v4l2_ctrl_handler_free(&priv->hdl);
 	return 0;
diff --git a/drivers/media/i2c/soc_camera/rj54n1cb0c.c b/drivers/media/i2c/soc_camera/rj54n1cb0c.c
index 1f9ec3b06b4..7e6d9784787 100644
--- a/drivers/media/i2c/soc_camera/rj54n1cb0c.c
+++ b/drivers/media/i2c/soc_camera/rj54n1cb0c.c
@@ -17,8 +17,8 @@
 
 #include <media/rj54n1cb0c.h>
 #include <media/soc_camera.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-subdev.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 #define RJ54N1_DEV_CODE			0x0400
@@ -151,6 +151,7 @@ struct rj54n1_clock_div {
 struct rj54n1 {
 	struct v4l2_subdev subdev;
 	struct v4l2_ctrl_handler hdl;
+	struct v4l2_clk *clk;
 	struct rj54n1_clock_div clk_div;
 	const struct rj54n1_datafmt *fmt;
 	struct v4l2_rect rect;	/* Sensor window */
@@ -1120,37 +1121,16 @@ static int rj54n1_s_fmt(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int rj54n1_g_chip_ident(struct v4l2_subdev *sd,
-			       struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
-		return -EINVAL;
-
-	if (id->match.addr != client->addr)
-		return -ENODEV;
-
-	id->ident	= V4L2_IDENT_RJ54N1CB0C;
-	id->revision	= 0;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int rj54n1_g_register(struct v4l2_subdev *sd,
 			     struct v4l2_dbg_register *reg)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR ||
-	    reg->reg < 0x400 || reg->reg > 0x1fff)
+	if (reg->reg < 0x400 || reg->reg > 0x1fff)
 		/* Registers > 0x0800 are only available from Sharp support */
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
 	reg->size = 1;
 	reg->val = reg_read(client, reg->reg);
 
@@ -1165,14 +1145,10 @@ static int rj54n1_s_register(struct v4l2_subdev *sd,
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR ||
-	    reg->reg < 0x400 || reg->reg > 0x1fff)
+	if (reg->reg < 0x400 || reg->reg > 0x1fff)
 		/* Registers >= 0x0800 are only available from Sharp support */
 		return -EINVAL;
 
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
 	if (reg_write(client, reg->reg, reg->val) < 0)
 		return -EIO;
 
@@ -1184,8 +1160,9 @@ static int rj54n1_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct rj54n1 *rj54n1 = to_rj54n1(client);
 
-	return soc_camera_set_power(&client->dev, ssdd, on);
+	return soc_camera_set_power(&client->dev, ssdd, rj54n1->clk, on);
 }
 
 static int rj54n1_s_ctrl(struct v4l2_ctrl *ctrl)
@@ -1233,7 +1210,6 @@ static const struct v4l2_ctrl_ops rj54n1_ctrl_ops = {
 };
 
 static struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = {
-	.g_chip_ident	= rj54n1_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= rj54n1_g_register,
 	.s_register	= rj54n1_s_register,
@@ -1382,9 +1358,18 @@ static int rj54n1_probe(struct i2c_client *client,
 	rj54n1->tgclk_mhz	= (rj54n1_priv->mclk_freq / PLL_L * PLL_N) /
 		(clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1);
 
+	rj54n1->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(rj54n1->clk)) {
+		ret = PTR_ERR(rj54n1->clk);
+		goto eclkget;
+	}
+
 	ret = rj54n1_video_probe(client, rj54n1_priv);
-	if (ret < 0)
+	if (ret < 0) {
+		v4l2_clk_put(rj54n1->clk);
+eclkget:
 		v4l2_ctrl_handler_free(&rj54n1->hdl);
+	}
 
 	return ret;
 }
@@ -1394,6 +1379,7 @@ static int rj54n1_remove(struct i2c_client *client)
 	struct rj54n1 *rj54n1 = to_rj54n1(client);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
 
+	v4l2_clk_put(rj54n1->clk);
 	v4l2_device_unregister_subdev(&rj54n1->subdev);
 	if (ssdd->free_bus)
 		ssdd->free_bus(ssdd);
diff --git a/drivers/media/i2c/soc_camera/tw9910.c b/drivers/media/i2c/soc_camera/tw9910.c
index bad90b16a6d..ab54628d941 100644
--- a/drivers/media/i2c/soc_camera/tw9910.c
+++ b/drivers/media/i2c/soc_camera/tw9910.c
@@ -27,7 +27,7 @@
 
 #include <media/soc_camera.h>
 #include <media/tw9910.h>
-#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-clk.h>
 #include <media/v4l2-subdev.h>
 
 #define GET_ID(val)  ((val & 0xF8) >> 3)
@@ -228,6 +228,7 @@ struct tw9910_scale_ctrl {
 
 struct tw9910_priv {
 	struct v4l2_subdev		subdev;
+	struct v4l2_clk			*clk;
 	struct tw9910_video_info	*info;
 	const struct tw9910_scale_ctrl	*scale;
 	v4l2_std_id			norm;
@@ -518,18 +519,6 @@ static int tw9910_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
 	return 0;
 }
 
-static int tw9910_g_chip_ident(struct v4l2_subdev *sd,
-			       struct v4l2_dbg_chip_ident *id)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-	struct tw9910_priv *priv = to_tw9910(client);
-
-	id->ident = V4L2_IDENT_TW9910;
-	id->revision = priv->revision;
-
-	return 0;
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int tw9910_g_register(struct v4l2_subdev *sd,
 			     struct v4l2_dbg_register *reg)
@@ -540,6 +529,7 @@ static int tw9910_g_register(struct v4l2_subdev *sd,
 	if (reg->reg > 0xff)
 		return -EINVAL;
 
+	reg->size = 1;
 	ret = i2c_smbus_read_byte_data(client, reg->reg);
 	if (ret < 0)
 		return ret;
@@ -570,8 +560,9 @@ static int tw9910_s_power(struct v4l2_subdev *sd, int on)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+	struct tw9910_priv *priv = to_tw9910(client);
 
-	return soc_camera_set_power(&client->dev, ssdd, on);
+	return soc_camera_set_power(&client->dev, ssdd, priv->clk, on);
 }
 
 static int tw9910_set_frame(struct v4l2_subdev *sd, u32 *width, u32 *height)
@@ -823,7 +814,6 @@ done:
 }
 
 static struct v4l2_subdev_core_ops tw9910_subdev_core_ops = {
-	.g_chip_ident	= tw9910_g_chip_ident,
 	.s_std		= tw9910_s_std,
 	.g_std		= tw9910_g_std,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
@@ -912,6 +902,7 @@ static int tw9910_probe(struct i2c_client *client,
 	struct i2c_adapter		*adapter =
 		to_i2c_adapter(client->dev.parent);
 	struct soc_camera_subdev_desc	*ssdd = soc_camera_i2c_to_desc(client);
+	int ret;
 
 	if (!ssdd || !ssdd->drv_priv) {
 		dev_err(&client->dev, "TW9910: missing platform data!\n");
@@ -935,11 +926,21 @@ static int tw9910_probe(struct i2c_client *client,
 
 	v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops);
 
-	return tw9910_video_probe(client);
+	priv->clk = v4l2_clk_get(&client->dev, "mclk");
+	if (IS_ERR(priv->clk))
+		return PTR_ERR(priv->clk);
+
+	ret = tw9910_video_probe(client);
+	if (ret < 0)
+		v4l2_clk_put(priv->clk);
+
+	return ret;
 }
 
 static int tw9910_remove(struct i2c_client *client)
 {
+	struct tw9910_priv *priv = to_tw9910(client);
+	v4l2_clk_put(priv->clk);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/sony-btf-mpx.c b/drivers/media/i2c/sony-btf-mpx.c
index 38cbea98764..32d82320b48 100644
--- a/drivers/media/i2c/sony-btf-mpx.c
+++ b/drivers/media/i2c/sony-btf-mpx.c
@@ -30,7 +30,7 @@ MODULE_LICENSE("GPL v2");
 
 static int debug;
 module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "debug level 0=off(default) 1=on\n");
+MODULE_PARM_DESC(debug, "debug level 0=off(default) 1=on");
 
 /* #define MPX_DEBUG */
 
@@ -355,7 +355,7 @@ static int sony_btf_mpx_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	t = kzalloc(sizeof(struct sony_btf_mpx), GFP_KERNEL);
+	t = devm_kzalloc(&client->dev, sizeof(*t), GFP_KERNEL);
 	if (t == NULL)
 		return -ENOMEM;
 
@@ -374,7 +374,6 @@ static int sony_btf_mpx_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_state(sd));
 
 	return 0;
 }
diff --git a/drivers/media/i2c/sr030pc30.c b/drivers/media/i2c/sr030pc30.c
index e9d95bda2ab..ae9432637fc 100644
--- a/drivers/media/i2c/sr030pc30.c
+++ b/drivers/media/i2c/sr030pc30.c
@@ -23,6 +23,7 @@
 #include <media/v4l2-device.h>
 #include <media/v4l2-subdev.h>
 #include <media/v4l2-mediabus.h>
+#include <media/v4l2-ctrls.h>
 #include <media/sr030pc30.h>
 
 static int debug;
@@ -142,17 +143,24 @@ module_param(debug, int, 0644);
 
 struct sr030pc30_info {
 	struct v4l2_subdev sd;
+	struct v4l2_ctrl_handler hdl;
 	const struct sr030pc30_platform_data *pdata;
 	const struct sr030pc30_format *curr_fmt;
 	const struct sr030pc30_frmsize *curr_win;
-	unsigned int auto_wb:1;
-	unsigned int auto_exp:1;
 	unsigned int hflip:1;
 	unsigned int vflip:1;
 	unsigned int sleep:1;
-	unsigned int exposure;
-	u8 blue_balance;
-	u8 red_balance;
+	struct {
+		/* auto whitebalance control cluster */
+		struct v4l2_ctrl *awb;
+		struct v4l2_ctrl *red;
+		struct v4l2_ctrl *blue;
+	};
+	struct {
+		/* auto exposure control cluster */
+		struct v4l2_ctrl *autoexp;
+		struct v4l2_ctrl *exp;
+	};
 	u8 i2c_reg_page;
 };
 
@@ -173,52 +181,6 @@ struct i2c_regval {
 	u16 val;
 };
 
-static const struct v4l2_queryctrl sr030pc30_ctrl[] = {
-	{
-		.id		= V4L2_CID_AUTO_WHITE_BALANCE,
-		.type		= V4L2_CTRL_TYPE_BOOLEAN,
-		.name		= "Auto White Balance",
-		.minimum	= 0,
-		.maximum	= 1,
-		.step		= 1,
-		.default_value	= 1,
-	}, {
-		.id		= V4L2_CID_RED_BALANCE,
-		.type		= V4L2_CTRL_TYPE_INTEGER,
-		.name		= "Red Balance",
-		.minimum	= 0,
-		.maximum	= 127,
-		.step		= 1,
-		.default_value	= 64,
-		.flags		= 0,
-	}, {
-		.id		= V4L2_CID_BLUE_BALANCE,
-		.type		= V4L2_CTRL_TYPE_INTEGER,
-		.name		= "Blue Balance",
-		.minimum	= 0,
-		.maximum	= 127,
-		.step		= 1,
-		.default_value	= 64,
-	}, {
-		.id		= V4L2_CID_EXPOSURE_AUTO,
-		.type		= V4L2_CTRL_TYPE_INTEGER,
-		.name		= "Auto Exposure",
-		.minimum	= 0,
-		.maximum	= 1,
-		.step		= 1,
-		.default_value	= 1,
-	}, {
-		.id		= V4L2_CID_EXPOSURE,
-		.type		= V4L2_CTRL_TYPE_INTEGER,
-		.name		= "Exposure",
-		.minimum	= EXPOS_MIN_MS,
-		.maximum	= EXPOS_MAX_MS,
-		.step		= 1,
-		.default_value	= 1,
-	}, {
-	}
-};
-
 /* supported resolutions */
 static const struct sr030pc30_frmsize sr030pc30_sizes[] = {
 	{
@@ -394,48 +356,6 @@ static int sr030pc30_pwr_ctrl(struct v4l2_subdev *sd,
 	return ret;
 }
 
-static inline int sr030pc30_enable_autoexposure(struct v4l2_subdev *sd, int on)
-{
-	struct sr030pc30_info *info = to_sr030pc30(sd);
-	/* auto anti-flicker is also enabled here */
-	int ret = cam_i2c_write(sd, AE_CTL1_REG, on ? 0xDC : 0x0C);
-	if (!ret)
-		info->auto_exp = on;
-	return ret;
-}
-
-static int sr030pc30_set_exposure(struct v4l2_subdev *sd, int value)
-{
-	struct sr030pc30_info *info = to_sr030pc30(sd);
-
-	unsigned long expos = value * info->pdata->clk_rate / (8 * 1000);
-
-	int ret = cam_i2c_write(sd, EXP_TIMEH_REG, expos >> 16 & 0xFF);
-	if (!ret)
-		ret = cam_i2c_write(sd, EXP_TIMEM_REG, expos >> 8 & 0xFF);
-	if (!ret)
-		ret = cam_i2c_write(sd, EXP_TIMEL_REG, expos & 0xFF);
-	if (!ret) { /* Turn off AE */
-		info->exposure = value;
-		ret = sr030pc30_enable_autoexposure(sd, 0);
-	}
-	return ret;
-}
-
-/* Automatic white balance control */
-static int sr030pc30_enable_autowhitebalance(struct v4l2_subdev *sd, int on)
-{
-	struct sr030pc30_info *info = to_sr030pc30(sd);
-
-	int ret = cam_i2c_write(sd, AWB_CTL2_REG, on ? 0x2E : 0x2F);
-	if (!ret)
-		ret = cam_i2c_write(sd, AWB_CTL1_REG, on ? 0xFB : 0x7B);
-	if (!ret)
-		info->auto_wb = on;
-
-	return ret;
-}
-
 static int sr030pc30_set_flip(struct v4l2_subdev *sd)
 {
 	struct sr030pc30_info *info = to_sr030pc30(sd);
@@ -498,107 +418,56 @@ static int sr030pc30_try_frame_size(struct v4l2_mbus_framefmt *mf)
 	return -EINVAL;
 }
 
-static int sr030pc30_queryctrl(struct v4l2_subdev *sd,
-			       struct v4l2_queryctrl *qc)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(sr030pc30_ctrl); i++)
-		if (qc->id == sr030pc30_ctrl[i].id) {
-			*qc = sr030pc30_ctrl[i];
-			v4l2_dbg(1, debug, sd, "%s id: %d\n",
-				 __func__, qc->id);
-			return 0;
-		}
-
-	return -EINVAL;
-}
-
-static inline int sr030pc30_set_bluebalance(struct v4l2_subdev *sd, int value)
+static int sr030pc30_s_ctrl(struct v4l2_ctrl *ctrl)
 {
-	int ret = cam_i2c_write(sd, MWB_BGAIN_REG, value);
-	if (!ret)
-		to_sr030pc30(sd)->blue_balance = value;
-	return ret;
-}
-
-static inline int sr030pc30_set_redbalance(struct v4l2_subdev *sd, int value)
-{
-	int ret = cam_i2c_write(sd, MWB_RGAIN_REG, value);
-	if (!ret)
-		to_sr030pc30(sd)->red_balance = value;
-	return ret;
-}
-
-static int sr030pc30_s_ctrl(struct v4l2_subdev *sd,
-			    struct v4l2_control *ctrl)
-{
-	int i, ret = 0;
-
-	for (i = 0; i < ARRAY_SIZE(sr030pc30_ctrl); i++)
-		if (ctrl->id == sr030pc30_ctrl[i].id)
-			break;
-
-	if (i == ARRAY_SIZE(sr030pc30_ctrl))
-		return -EINVAL;
-
-	if (ctrl->value < sr030pc30_ctrl[i].minimum ||
-		ctrl->value > sr030pc30_ctrl[i].maximum)
-			return -ERANGE;
+	struct sr030pc30_info *info =
+		container_of(ctrl->handler, struct sr030pc30_info, hdl);
+	struct v4l2_subdev *sd = &info->sd;
+	int ret = 0;
 
 	v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
-			 __func__, ctrl->id, ctrl->value);
+			 __func__, ctrl->id, ctrl->val);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUTO_WHITE_BALANCE:
-		sr030pc30_enable_autowhitebalance(sd, ctrl->value);
-		break;
-	case V4L2_CID_BLUE_BALANCE:
-		ret = sr030pc30_set_bluebalance(sd, ctrl->value);
-		break;
-	case V4L2_CID_RED_BALANCE:
-		ret = sr030pc30_set_redbalance(sd, ctrl->value);
-		break;
-	case V4L2_CID_EXPOSURE_AUTO:
-		sr030pc30_enable_autoexposure(sd,
-			ctrl->value == V4L2_EXPOSURE_AUTO);
-		break;
-	case V4L2_CID_EXPOSURE:
-		ret = sr030pc30_set_exposure(sd, ctrl->value);
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return ret;
-}
-
-static int sr030pc30_g_ctrl(struct v4l2_subdev *sd,
-			    struct v4l2_control *ctrl)
-{
-	struct sr030pc30_info *info = to_sr030pc30(sd);
-
-	v4l2_dbg(1, debug, sd, "%s: id: %d\n", __func__, ctrl->id);
+		if (ctrl->is_new) {
+			ret = cam_i2c_write(sd, AWB_CTL2_REG,
+					ctrl->val ? 0x2E : 0x2F);
+			if (!ret)
+				ret = cam_i2c_write(sd, AWB_CTL1_REG,
+						ctrl->val ? 0xFB : 0x7B);
+		}
+		if (!ret && info->blue->is_new)
+			ret = cam_i2c_write(sd, MWB_BGAIN_REG, info->blue->val);
+		if (!ret && info->red->is_new)
+			ret = cam_i2c_write(sd, MWB_RGAIN_REG, info->red->val);
+		return ret;
 
-	switch (ctrl->id) {
-	case V4L2_CID_AUTO_WHITE_BALANCE:
-		ctrl->value = info->auto_wb;
-		break;
-	case V4L2_CID_BLUE_BALANCE:
-		ctrl->value = info->blue_balance;
-		break;
-	case V4L2_CID_RED_BALANCE:
-		ctrl->value = info->red_balance;
-		break;
 	case V4L2_CID_EXPOSURE_AUTO:
-		ctrl->value = info->auto_exp;
-		break;
-	case V4L2_CID_EXPOSURE:
-		ctrl->value = info->exposure;
-		break;
+		/* auto anti-flicker is also enabled here */
+		if (ctrl->is_new)
+			ret = cam_i2c_write(sd, AE_CTL1_REG,
+				ctrl->val == V4L2_EXPOSURE_AUTO ? 0xDC : 0x0C);
+		if (info->exp->is_new) {
+			unsigned long expos = info->exp->val;
+
+			expos = expos * info->pdata->clk_rate / (8 * 1000);
+
+			if (!ret)
+				ret = cam_i2c_write(sd, EXP_TIMEH_REG,
+						expos >> 16 & 0xFF);
+			if (!ret)
+				ret = cam_i2c_write(sd, EXP_TIMEM_REG,
+						expos >> 8 & 0xFF);
+			if (!ret)
+				ret = cam_i2c_write(sd, EXP_TIMEL_REG,
+						expos & 0xFF);
+		}
+		return ret;
 	default:
 		return -EINVAL;
 	}
+
 	return 0;
 }
 
@@ -752,11 +621,19 @@ static int sr030pc30_s_power(struct v4l2_subdev *sd, int on)
 	return ret;
 }
 
+static const struct v4l2_ctrl_ops sr030pc30_ctrl_ops = {
+	.s_ctrl = sr030pc30_s_ctrl,
+};
+
 static const struct v4l2_subdev_core_ops sr030pc30_core_ops = {
 	.s_power	= sr030pc30_s_power,
-	.queryctrl	= sr030pc30_queryctrl,
-	.s_ctrl		= sr030pc30_s_ctrl,
-	.g_ctrl		= sr030pc30_g_ctrl,
+	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
+	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
+	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
+	.g_ctrl = v4l2_subdev_g_ctrl,
+	.s_ctrl = v4l2_subdev_s_ctrl,
+	.queryctrl = v4l2_subdev_queryctrl,
+	.querymenu = v4l2_subdev_querymenu,
 };
 
 static const struct v4l2_subdev_video_ops sr030pc30_video_ops = {
@@ -807,6 +684,7 @@ static int sr030pc30_probe(struct i2c_client *client,
 {
 	struct sr030pc30_info *info;
 	struct v4l2_subdev *sd;
+	struct v4l2_ctrl_handler *hdl;
 	const struct sr030pc30_platform_data *pdata
 		= client->dev.platform_data;
 	int ret;
@@ -820,7 +698,7 @@ static int sr030pc30_probe(struct i2c_client *client,
 	if (ret)
 		return ret;
 
-	info = kzalloc(sizeof(*info), GFP_KERNEL);
+	info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
 
@@ -830,10 +708,31 @@ static int sr030pc30_probe(struct i2c_client *client,
 
 	v4l2_i2c_subdev_init(sd, client, &sr030pc30_ops);
 
+	hdl = &info->hdl;
+	v4l2_ctrl_handler_init(hdl, 6);
+	info->awb = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
+			V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
+	info->red = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
+			V4L2_CID_RED_BALANCE, 0, 127, 1, 64);
+	info->blue = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
+			V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64);
+	info->autoexp = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
+			V4L2_CID_EXPOSURE_AUTO, 0, 1, 1, 1);
+	info->exp = v4l2_ctrl_new_std(hdl, &sr030pc30_ctrl_ops,
+			V4L2_CID_EXPOSURE, EXPOS_MIN_MS, EXPOS_MAX_MS, 1, 30);
+	sd->ctrl_handler = hdl;
+	if (hdl->error) {
+		int err = hdl->error;
+
+		v4l2_ctrl_handler_free(hdl);
+		return err;
+	}
+	v4l2_ctrl_auto_cluster(3, &info->awb, 0, false);
+	v4l2_ctrl_auto_cluster(2, &info->autoexp, V4L2_EXPOSURE_MANUAL, false);
+	v4l2_ctrl_handler_setup(hdl);
+
 	info->i2c_reg_page	= -1;
 	info->hflip		= 1;
-	info->auto_exp		= 1;
-	info->exposure		= 30;
 
 	return 0;
 }
@@ -841,10 +740,9 @@ static int sr030pc30_probe(struct i2c_client *client,
 static int sr030pc30_remove(struct i2c_client *client)
 {
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct sr030pc30_info *info = to_sr030pc30(sd);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(info);
+	v4l2_ctrl_handler_free(sd->ctrl_handler);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/tda7432.c b/drivers/media/i2c/tda7432.c
index 28b5121881f..72af644fa05 100644
--- a/drivers/media/i2c/tda7432.c
+++ b/drivers/media/i2c/tda7432.c
@@ -359,7 +359,7 @@ static int tda7432_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%02x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	t = kzalloc(sizeof(*t), GFP_KERNEL);
+	t = devm_kzalloc(&client->dev, sizeof(*t), GFP_KERNEL);
 	if (!t)
 		return -ENOMEM;
 	sd = &t->sd;
@@ -380,7 +380,6 @@ static int tda7432_probe(struct i2c_client *client,
 		int err = t->hdl.error;
 
 		v4l2_ctrl_handler_free(&t->hdl);
-		kfree(t);
 		return err;
 	}
 	v4l2_ctrl_cluster(2, &t->bass);
@@ -406,7 +405,6 @@ static int tda7432_remove(struct i2c_client *client)
 	tda7432_set(sd);
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&t->hdl);
-	kfree(t);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/tda9840.c b/drivers/media/i2c/tda9840.c
index 01441e35d88..fbdff8b24ee 100644
--- a/drivers/media/i2c/tda9840.c
+++ b/drivers/media/i2c/tda9840.c
@@ -31,7 +31,6 @@
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 
 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
 MODULE_DESCRIPTION("tda9840 driver");
@@ -145,26 +144,14 @@ static int tda9840_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *t)
 	return 0;
 }
 
-static int tda9840_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TDA9840, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
-static const struct v4l2_subdev_core_ops tda9840_core_ops = {
-	.g_chip_ident = tda9840_g_chip_ident,
-};
-
 static const struct v4l2_subdev_tuner_ops tda9840_tuner_ops = {
 	.s_tuner = tda9840_s_tuner,
 	.g_tuner = tda9840_g_tuner,
 };
 
 static const struct v4l2_subdev_ops tda9840_ops = {
-	.core = &tda9840_core_ops,
 	.tuner = &tda9840_tuner_ops,
 };
 
@@ -184,7 +171,7 @@ static int tda9840_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
+	sd = devm_kzalloc(&client->dev, sizeof(*sd), GFP_KERNEL);
 	if (sd == NULL)
 		return -ENOMEM;
 	v4l2_i2c_subdev_init(sd, client, &tda9840_ops);
@@ -201,7 +188,6 @@ static int tda9840_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(sd);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/tea6415c.c b/drivers/media/i2c/tea6415c.c
index 3d5b06a5c30..bbe1a99fda3 100644
--- a/drivers/media/i2c/tea6415c.c
+++ b/drivers/media/i2c/tea6415c.c
@@ -33,7 +33,6 @@
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include "tea6415c.h"
 
 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
@@ -119,25 +118,13 @@ static int tea6415c_s_routing(struct v4l2_subdev *sd,
 	return ret;
 }
 
-static int tea6415c_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TEA6415C, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
-static const struct v4l2_subdev_core_ops tea6415c_core_ops = {
-	.g_chip_ident = tea6415c_g_chip_ident,
-};
-
 static const struct v4l2_subdev_video_ops tea6415c_video_ops = {
 	.s_routing = tea6415c_s_routing,
 };
 
 static const struct v4l2_subdev_ops tea6415c_ops = {
-	.core = &tea6415c_core_ops,
 	.video = &tea6415c_video_ops,
 };
 
@@ -152,7 +139,7 @@ static int tea6415c_probe(struct i2c_client *client,
 
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
-	sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
+	sd = devm_kzalloc(&client->dev, sizeof(*sd), GFP_KERNEL);
 	if (sd == NULL)
 		return -ENOMEM;
 	v4l2_i2c_subdev_init(sd, client, &tea6415c_ops);
@@ -164,7 +151,6 @@ static int tea6415c_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(sd);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/tea6420.c b/drivers/media/i2c/tea6420.c
index 38757217a07..30a8d75771a 100644
--- a/drivers/media/i2c/tea6420.c
+++ b/drivers/media/i2c/tea6420.c
@@ -33,7 +33,6 @@
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include "tea6420.h"
 
 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
@@ -90,25 +89,13 @@ static int tea6420_s_routing(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int tea6420_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TEA6420, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
-static const struct v4l2_subdev_core_ops tea6420_core_ops = {
-	.g_chip_ident = tea6420_g_chip_ident,
-};
-
 static const struct v4l2_subdev_audio_ops tea6420_audio_ops = {
 	.s_routing = tea6420_s_routing,
 };
 
 static const struct v4l2_subdev_ops tea6420_ops = {
-	.core = &tea6420_core_ops,
 	.audio = &tea6420_audio_ops,
 };
 
@@ -125,7 +112,7 @@ static int tea6420_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
+	sd = devm_kzalloc(&client->dev, sizeof(*sd), GFP_KERNEL);
 	if (sd == NULL)
 		return -ENOMEM;
 	v4l2_i2c_subdev_init(sd, client, &tea6420_ops);
@@ -146,7 +133,6 @@ static int tea6420_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(sd);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/ths7303.c b/drivers/media/i2c/ths7303.c
index c4339556a2e..0a2dacbd7a6 100644
--- a/drivers/media/i2c/ths7303.c
+++ b/drivers/media/i2c/ths7303.c
@@ -26,7 +26,6 @@
 #include <linux/slab.h>
 
 #include <media/ths7303.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-device.h>
 
 #define THS7303_CHANNEL_1	1
@@ -35,11 +34,10 @@
 
 struct ths7303_state {
 	struct v4l2_subdev		sd;
-	struct ths7303_platform_data	pdata;
+	const struct ths7303_platform_data *pdata;
 	struct v4l2_bt_timings		bt;
 	int std_id;
 	int stream_on;
-	int driver_data;
 };
 
 enum ths7303_filter_mode {
@@ -89,7 +87,7 @@ int ths7303_setval(struct v4l2_subdev *sd, enum ths7303_filter_mode mode)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct ths7303_state *state = to_state(sd);
-	struct ths7303_platform_data *pdata = &state->pdata;
+	const struct ths7303_platform_data *pdata = state->pdata;
 	u8 val, sel = 0;
 	int err, disable = 0;
 
@@ -212,15 +210,6 @@ static int ths7303_s_dv_timings(struct v4l2_subdev *sd,
 	return ths7303_config(sd);
 }
 
-static int ths7303_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-	struct ths7303_state *state = to_state(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, state->driver_data, 0);
-}
-
 static const struct v4l2_subdev_video_ops ths7303_video_ops = {
 	.s_stream	= ths7303_s_stream,
 	.s_std_output	= ths7303_s_std_output,
@@ -232,13 +221,6 @@ static const struct v4l2_subdev_video_ops ths7303_video_ops = {
 static int ths7303_g_register(struct v4l2_subdev *sd,
 			      struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	reg->size = 1;
 	reg->val = ths7303_read(sd, reg->reg);
 	return 0;
@@ -247,13 +229,6 @@ static int ths7303_g_register(struct v4l2_subdev *sd,
 static int ths7303_s_register(struct v4l2_subdev *sd,
 			      const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	ths7303_write(sd, reg->reg, reg->val);
 	return 0;
 }
@@ -340,7 +315,6 @@ static int ths7303_log_status(struct v4l2_subdev *sd)
 }
 
 static const struct v4l2_subdev_core_ops ths7303_core_ops = {
-	.g_chip_ident = ths7303_g_chip_ident,
 	.log_status = ths7303_log_status,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = ths7303_g_register,
@@ -353,32 +327,6 @@ static const struct v4l2_subdev_ops ths7303_ops = {
 	.video 	= &ths7303_video_ops,
 };
 
-static int ths7303_setup(struct v4l2_subdev *sd)
-{
-	struct ths7303_state *state = to_state(sd);
-	struct ths7303_platform_data *pdata = &state->pdata;
-	int ret;
-	u8 mask;
-
-	state->stream_on = pdata->init_enable;
-
-	mask = state->stream_on ? 0xff : 0xf8;
-
-	ret = ths7303_write(sd, THS7303_CHANNEL_1, pdata->ch_1 & mask);
-	if (ret)
-		return ret;
-
-	ret = ths7303_write(sd, THS7303_CHANNEL_2, pdata->ch_2 & mask);
-	if (ret)
-		return ret;
-
-	ret = ths7303_write(sd, THS7303_CHANNEL_3, pdata->ch_3 & mask);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
 static int ths7303_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
@@ -386,6 +334,11 @@ static int ths7303_probe(struct i2c_client *client,
 	struct ths7303_state *state;
 	struct v4l2_subdev *sd;
 
+	if (pdata == NULL) {
+		dev_err(&client->dev, "No platform data\n");
+		return -EINVAL;
+	}
+
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		return -ENODEV;
 
@@ -397,20 +350,14 @@ static int ths7303_probe(struct i2c_client *client,
 	if (!state)
 		return -ENOMEM;
 
-	if (!pdata)
-		v4l_warn(client, "No platform data, using default data!\n");
-	else
-		state->pdata = *pdata;
-
+	state->pdata = pdata;
 	sd = &state->sd;
 	v4l2_i2c_subdev_init(sd, client, &ths7303_ops);
 
-	/* store the driver data to differntiate the chip */
-	state->driver_data = (int)id->driver_data;
-
-	if (ths7303_setup(sd) < 0) {
-		v4l_err(client, "init failed\n");
-		return -EIO;
+	/* set to default 480I_576I filter mode */
+	if (ths7303_setval(sd, THS7303_FILTER_MODE_480I_576I) < 0) {
+		v4l_err(client, "Setting to 480I_576I filter mode failed!\n");
+		return -EINVAL;
 	}
 
 	return 0;
@@ -426,8 +373,8 @@ static int ths7303_remove(struct i2c_client *client)
 }
 
 static const struct i2c_device_id ths7303_id[] = {
-	{"ths7303", V4L2_IDENT_THS7303},
-	{"ths7353", V4L2_IDENT_THS7353},
+	{"ths7303", 0},
+	{"ths7353", 0},
 	{},
 };
 
diff --git a/drivers/media/i2c/ths8200.c b/drivers/media/i2c/ths8200.c
new file mode 100644
index 00000000000..a24f90c5261
--- /dev/null
+++ b/drivers/media/i2c/ths8200.c
@@ -0,0 +1,556 @@
+/*
+ * ths8200 - Texas Instruments THS8200 video encoder driver
+ *
+ * Copyright 2013 Cisco Systems, Inc. and/or its affiliates.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed .as is. WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/v4l2-dv-timings.h>
+
+#include <media/v4l2-device.h>
+
+#include "ths8200_regs.h"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "debug level (0-2)");
+
+MODULE_DESCRIPTION("Texas Instruments THS8200 video encoder driver");
+MODULE_AUTHOR("Mats Randgaard <mats.randgaard@cisco.com>");
+MODULE_AUTHOR("Martin Bugge <martin.bugge@cisco.com>");
+MODULE_LICENSE("GPL v2");
+
+struct ths8200_state {
+	struct v4l2_subdev sd;
+	uint8_t chip_version;
+	/* Is the ths8200 powered on? */
+	bool power_on;
+	struct v4l2_dv_timings dv_timings;
+};
+
+static const struct v4l2_dv_timings ths8200_timings[] = {
+	V4L2_DV_BT_CEA_720X480P59_94,
+	V4L2_DV_BT_CEA_1280X720P24,
+	V4L2_DV_BT_CEA_1280X720P25,
+	V4L2_DV_BT_CEA_1280X720P30,
+	V4L2_DV_BT_CEA_1280X720P50,
+	V4L2_DV_BT_CEA_1280X720P60,
+	V4L2_DV_BT_CEA_1920X1080P24,
+	V4L2_DV_BT_CEA_1920X1080P25,
+	V4L2_DV_BT_CEA_1920X1080P30,
+	V4L2_DV_BT_CEA_1920X1080P50,
+	V4L2_DV_BT_CEA_1920X1080P60,
+};
+
+static inline struct ths8200_state *to_state(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct ths8200_state, sd);
+}
+
+static inline unsigned hblanking(const struct v4l2_bt_timings *t)
+{
+	return t->hfrontporch + t->hsync + t->hbackporch;
+}
+
+static inline unsigned htotal(const struct v4l2_bt_timings *t)
+{
+	return t->width + t->hfrontporch + t->hsync + t->hbackporch;
+}
+
+static inline unsigned vblanking(const struct v4l2_bt_timings *t)
+{
+	return t->vfrontporch + t->vsync + t->vbackporch;
+}
+
+static inline unsigned vtotal(const struct v4l2_bt_timings *t)
+{
+	return t->height + t->vfrontporch + t->vsync + t->vbackporch;
+}
+
+static int ths8200_read(struct v4l2_subdev *sd, u8 reg)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+	return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int ths8200_write(struct v4l2_subdev *sd, u8 reg, u8 val)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int ret;
+	int i;
+
+	for (i = 0; i < 3; i++) {
+		ret = i2c_smbus_write_byte_data(client, reg, val);
+		if (ret == 0)
+			return 0;
+	}
+	v4l2_err(sd, "I2C Write Problem\n");
+	return ret;
+}
+
+/* To set specific bits in the register, a clear-mask is given (to be AND-ed),
+ * and then the value-mask (to be OR-ed).
+ */
+static inline void
+ths8200_write_and_or(struct v4l2_subdev *sd, u8 reg,
+		     uint8_t clr_mask, uint8_t val_mask)
+{
+	ths8200_write(sd, reg, (ths8200_read(sd, reg) & clr_mask) | val_mask);
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+
+static int ths8200_g_register(struct v4l2_subdev *sd,
+			      struct v4l2_dbg_register *reg)
+{
+	reg->val = ths8200_read(sd, reg->reg & 0xff);
+	reg->size = 1;
+
+	return 0;
+}
+
+static int ths8200_s_register(struct v4l2_subdev *sd,
+			      const struct v4l2_dbg_register *reg)
+{
+	ths8200_write(sd, reg->reg & 0xff, reg->val & 0xff);
+
+	return 0;
+}
+#endif
+
+static void ths8200_print_timings(struct v4l2_subdev *sd,
+				  struct v4l2_dv_timings *timings,
+				  const char *txt, bool detailed)
+{
+	struct v4l2_bt_timings *bt = &timings->bt;
+	u32 htot, vtot;
+
+	if (timings->type != V4L2_DV_BT_656_1120)
+		return;
+
+	htot = htotal(bt);
+	vtot = vtotal(bt);
+
+	v4l2_info(sd, "%s %dx%d%s%d (%dx%d)",
+		  txt, bt->width, bt->height, bt->interlaced ? "i" : "p",
+		  (htot * vtot) > 0 ? ((u32)bt->pixelclock / (htot * vtot)) : 0,
+		  htot, vtot);
+
+	if (detailed) {
+		v4l2_info(sd, "    horizontal: fp = %d, %ssync = %d, bp = %d\n",
+			  bt->hfrontporch,
+			  (bt->polarities & V4L2_DV_HSYNC_POS_POL) ? "+" : "-",
+			  bt->hsync, bt->hbackporch);
+		v4l2_info(sd, "    vertical: fp = %d, %ssync = %d, bp = %d\n",
+			  bt->vfrontporch,
+			  (bt->polarities & V4L2_DV_VSYNC_POS_POL) ? "+" : "-",
+			  bt->vsync, bt->vbackporch);
+		v4l2_info(sd,
+			  "    pixelclock: %lld, flags: 0x%x, standards: 0x%x\n",
+			  bt->pixelclock, bt->flags, bt->standards);
+	}
+}
+
+static int ths8200_log_status(struct v4l2_subdev *sd)
+{
+	struct ths8200_state *state = to_state(sd);
+	uint8_t reg_03 = ths8200_read(sd, THS8200_CHIP_CTL);
+
+	v4l2_info(sd, "----- Chip status -----\n");
+	v4l2_info(sd, "version: %u\n", state->chip_version);
+	v4l2_info(sd, "power: %s\n", (reg_03 & 0x0c) ? "off" : "on");
+	v4l2_info(sd, "reset: %s\n", (reg_03 & 0x01) ? "off" : "on");
+	v4l2_info(sd, "test pattern: %s\n",
+		  (reg_03 & 0x20) ? "enabled" : "disabled");
+	v4l2_info(sd, "format: %ux%u\n",
+		  ths8200_read(sd, THS8200_DTG2_PIXEL_CNT_MSB) * 256 +
+		  ths8200_read(sd, THS8200_DTG2_PIXEL_CNT_LSB),
+		  (ths8200_read(sd, THS8200_DTG2_LINE_CNT_MSB) & 0x07) * 256 +
+		  ths8200_read(sd, THS8200_DTG2_LINE_CNT_LSB));
+	ths8200_print_timings(sd, &state->dv_timings,
+			      "Configured format:", true);
+
+	return 0;
+}
+
+/* Power up/down ths8200 */
+static int ths8200_s_power(struct v4l2_subdev *sd, int on)
+{
+	struct ths8200_state *state = to_state(sd);
+
+	v4l2_dbg(1, debug, sd, "%s: power %s\n", __func__, on ? "on" : "off");
+
+	state->power_on = on;
+
+	/* Power up/down - leave in reset state until input video is present */
+	ths8200_write_and_or(sd, THS8200_CHIP_CTL, 0xf2, (on ? 0x00 : 0x0c));
+
+	return 0;
+}
+
+static const struct v4l2_subdev_core_ops ths8200_core_ops = {
+	.log_status = ths8200_log_status,
+	.s_power = ths8200_s_power,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	.g_register = ths8200_g_register,
+	.s_register = ths8200_s_register,
+#endif
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 subdev video operations
+ */
+
+static int ths8200_s_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct ths8200_state *state = to_state(sd);
+
+	if (enable && !state->power_on)
+		ths8200_s_power(sd, true);
+
+	ths8200_write_and_or(sd, THS8200_CHIP_CTL, 0xfe,
+			     (enable ? 0x01 : 0x00));
+
+	v4l2_dbg(1, debug, sd, "%s: %sable\n",
+		 __func__, (enable ? "en" : "dis"));
+
+	return 0;
+}
+
+static void ths8200_core_init(struct v4l2_subdev *sd)
+{
+	/* setup clocks */
+	ths8200_write_and_or(sd, THS8200_CHIP_CTL, 0x3f, 0xc0);
+
+	/**** Data path control (DATA) ****/
+	/* Set FSADJ 700 mV,
+	 * bypass 422-444 interpolation,
+	 * input format 30 bit RGB444
+	 */
+	ths8200_write(sd, THS8200_DATA_CNTL, 0x70);
+
+	/* DTG Mode (Video blocked during blanking
+	 * VESA slave
+	 */
+	ths8200_write(sd, THS8200_DTG1_MODE, 0x87);
+
+	/**** Display Timing Generator Control, Part 1 (DTG1). ****/
+
+	/* Disable embedded syncs on the output by setting
+	 * the amplitude to zero for all channels.
+	 */
+	ths8200_write(sd, THS8200_DTG1_Y_SYNC_MSB, 0x2a);
+	ths8200_write(sd, THS8200_DTG1_CBCR_SYNC_MSB, 0x2a);
+}
+
+static void ths8200_setup(struct v4l2_subdev *sd, struct v4l2_bt_timings *bt)
+{
+	uint8_t polarity = 0;
+	uint16_t line_start_active_video = (bt->vsync + bt->vbackporch);
+	uint16_t line_start_front_porch  = (vtotal(bt) - bt->vfrontporch);
+
+	/*** System ****/
+	/* Set chip in reset while it is configured */
+	ths8200_s_stream(sd, false);
+
+	/* configure video output timings */
+	ths8200_write(sd, THS8200_DTG1_SPEC_A, bt->hsync);
+	ths8200_write(sd, THS8200_DTG1_SPEC_B, bt->hfrontporch);
+
+	/* Zero for progressive scan formats.*/
+	if (!bt->interlaced)
+		ths8200_write(sd, THS8200_DTG1_SPEC_C, 0x00);
+
+	/* Distance from leading edge of h sync to start of active video.
+	 * MSB in 0x2b
+	 */
+	ths8200_write(sd, THS8200_DTG1_SPEC_D_LSB,
+		      (bt->hbackporch + bt->hsync) & 0xff);
+	/* Zero for SDTV-mode. MSB in 0x2b */
+	ths8200_write(sd, THS8200_DTG1_SPEC_E_LSB, 0x00);
+	/*
+	 * MSB for dtg1_spec(d/e/h). See comment for
+	 * corresponding LSB registers.
+	 */
+	ths8200_write(sd, THS8200_DTG1_SPEC_DEH_MSB,
+		      ((bt->hbackporch + bt->hsync) & 0x100) >> 1);
+
+	/* h front porch */
+	ths8200_write(sd, THS8200_DTG1_SPEC_K_LSB, (bt->hfrontporch) & 0xff);
+	ths8200_write(sd, THS8200_DTG1_SPEC_K_MSB,
+		      ((bt->hfrontporch) & 0x700) >> 8);
+
+	/* Half the line length. Used to calculate SDTV line types. */
+	ths8200_write(sd, THS8200_DTG1_SPEC_G_LSB, (htotal(bt)/2) & 0xff);
+	ths8200_write(sd, THS8200_DTG1_SPEC_G_MSB,
+		      ((htotal(bt)/2) >> 8) & 0x0f);
+
+	/* Total pixels per line (ex. 720p: 1650) */
+	ths8200_write(sd, THS8200_DTG1_TOT_PIXELS_MSB, htotal(bt) >> 8);
+	ths8200_write(sd, THS8200_DTG1_TOT_PIXELS_LSB, htotal(bt) & 0xff);
+
+	/* Frame height and field height */
+	/* Field height should be programmed higher than frame_size for
+	 * progressive scan formats
+	 */
+	ths8200_write(sd, THS8200_DTG1_FRAME_FIELD_SZ_MSB,
+		      ((vtotal(bt) >> 4) & 0xf0) + 0x7);
+	ths8200_write(sd, THS8200_DTG1_FRAME_SZ_LSB, vtotal(bt) & 0xff);
+
+	/* Should be programmed higher than frame_size
+	 * for progressive formats
+	 */
+	if (!bt->interlaced)
+		ths8200_write(sd, THS8200_DTG1_FIELD_SZ_LSB, 0xff);
+
+	/**** Display Timing Generator Control, Part 2 (DTG2). ****/
+	/* Set breakpoint line numbers and types
+	 * THS8200 generates line types with different properties. A line type
+	 * that sets all the RGB-outputs to zero is used in the blanking areas,
+	 * while a line type that enable the RGB-outputs is used in active video
+	 * area. The line numbers for start of active video, start of front
+	 * porch and after the last line in the frame must be set with the
+	 * corresponding line types.
+	 *
+	 * Line types:
+	 * 0x9 - Full normal sync pulse: Blocks data when dtg1_pass is off.
+	 *       Used in blanking area.
+	 * 0x0 - Active video: Video data is always passed. Used in active
+	 *       video area.
+	 */
+	ths8200_write_and_or(sd, THS8200_DTG2_BP1_2_MSB, 0x88,
+			     ((line_start_active_video >> 4) & 0x70) +
+			     ((line_start_front_porch >> 8) & 0x07));
+	ths8200_write(sd, THS8200_DTG2_BP3_4_MSB, ((vtotal(bt)) >> 4) & 0x70);
+	ths8200_write(sd, THS8200_DTG2_BP1_LSB, line_start_active_video & 0xff);
+	ths8200_write(sd, THS8200_DTG2_BP2_LSB, line_start_front_porch & 0xff);
+	ths8200_write(sd, THS8200_DTG2_BP3_LSB, (vtotal(bt)) & 0xff);
+
+	/* line types */
+	ths8200_write(sd, THS8200_DTG2_LINETYPE1, 0x90);
+	ths8200_write(sd, THS8200_DTG2_LINETYPE2, 0x90);
+
+	/* h sync width transmitted */
+	ths8200_write(sd, THS8200_DTG2_HLENGTH_LSB, bt->hsync & 0xff);
+	ths8200_write_and_or(sd, THS8200_DTG2_HLENGTH_LSB_HDLY_MSB, 0x3f,
+			     (bt->hsync >> 2) & 0xc0);
+
+	/* The pixel value h sync is asserted on */
+	ths8200_write_and_or(sd, THS8200_DTG2_HLENGTH_LSB_HDLY_MSB, 0xe0,
+			     (htotal(bt) >> 8) & 0x1f);
+	ths8200_write(sd, THS8200_DTG2_HLENGTH_HDLY_LSB, htotal(bt));
+
+	/* v sync width transmitted */
+	ths8200_write(sd, THS8200_DTG2_VLENGTH1_LSB, (bt->vsync) & 0xff);
+	ths8200_write_and_or(sd, THS8200_DTG2_VLENGTH1_MSB_VDLY1_MSB, 0x3f,
+			     ((bt->vsync) >> 2) & 0xc0);
+
+	/* The pixel value v sync is asserted on */
+	ths8200_write_and_or(sd, THS8200_DTG2_VLENGTH1_MSB_VDLY1_MSB, 0xf8,
+			     (vtotal(bt)>>8) & 0x7);
+	ths8200_write(sd, THS8200_DTG2_VDLY1_LSB, vtotal(bt));
+
+	/* For progressive video vlength2 must be set to all 0 and vdly2 must
+	 * be set to all 1.
+	 */
+	ths8200_write(sd, THS8200_DTG2_VLENGTH2_LSB, 0x00);
+	ths8200_write(sd, THS8200_DTG2_VLENGTH2_MSB_VDLY2_MSB, 0x07);
+	ths8200_write(sd, THS8200_DTG2_VDLY2_LSB, 0xff);
+
+	/* Internal delay factors to synchronize the sync pulses and the data */
+	/* Experimental values delays (hor 4, ver 1) */
+	ths8200_write(sd, THS8200_DTG2_HS_IN_DLY_MSB, (htotal(bt)>>8) & 0x1f);
+	ths8200_write(sd, THS8200_DTG2_HS_IN_DLY_LSB, (htotal(bt) - 4) & 0xff);
+	ths8200_write(sd, THS8200_DTG2_VS_IN_DLY_MSB, 0);
+	ths8200_write(sd, THS8200_DTG2_VS_IN_DLY_LSB, 1);
+
+	/* Polarity of received and transmitted sync signals */
+	if (bt->polarities & V4L2_DV_HSYNC_POS_POL) {
+		polarity |= 0x01; /* HS_IN */
+		polarity |= 0x08; /* HS_OUT */
+	}
+	if (bt->polarities & V4L2_DV_VSYNC_POS_POL) {
+		polarity |= 0x02; /* VS_IN */
+		polarity |= 0x10; /* VS_OUT */
+	}
+
+	/* RGB mode, no embedded timings */
+	/* Timing of video input bus is derived from HS, VS, and FID dedicated
+	 * inputs
+	 */
+	ths8200_write(sd, THS8200_DTG2_CNTL, 0x47 | polarity);
+
+	/* leave reset */
+	ths8200_s_stream(sd, true);
+
+	v4l2_dbg(1, debug, sd, "%s: frame %dx%d, polarity %d\n"
+		 "horizontal: front porch %d, back porch %d, sync %d\n"
+		 "vertical: sync %d\n", __func__, htotal(bt), vtotal(bt),
+		 polarity, bt->hfrontporch, bt->hbackporch,
+		 bt->hsync, bt->vsync);
+}
+
+static int ths8200_s_dv_timings(struct v4l2_subdev *sd,
+				struct v4l2_dv_timings *timings)
+{
+	struct ths8200_state *state = to_state(sd);
+	int i;
+
+	v4l2_dbg(1, debug, sd, "%s:\n", __func__);
+
+	if (timings->type != V4L2_DV_BT_656_1120)
+		return -EINVAL;
+
+	/* TODO Support interlaced formats */
+	if (timings->bt.interlaced) {
+		v4l2_dbg(1, debug, sd, "TODO Support interlaced formats\n");
+		return -EINVAL;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(ths8200_timings); i++) {
+		if (v4l_match_dv_timings(&ths8200_timings[i], timings, 10))
+			break;
+	}
+
+	if (i == ARRAY_SIZE(ths8200_timings)) {
+		v4l2_dbg(1, debug, sd, "Unsupported format\n");
+		return -EINVAL;
+	}
+
+	timings->bt.flags &= ~V4L2_DV_FL_REDUCED_FPS;
+
+	/* save timings */
+	state->dv_timings = *timings;
+
+	ths8200_setup(sd, &timings->bt);
+
+	return 0;
+}
+
+static int ths8200_g_dv_timings(struct v4l2_subdev *sd,
+				struct v4l2_dv_timings *timings)
+{
+	struct ths8200_state *state = to_state(sd);
+
+	v4l2_dbg(1, debug, sd, "%s:\n", __func__);
+
+	*timings = state->dv_timings;
+
+	return 0;
+}
+
+static int ths8200_enum_dv_timings(struct v4l2_subdev *sd,
+				   struct v4l2_enum_dv_timings *timings)
+{
+	/* Check requested format index is within range */
+	if (timings->index >= ARRAY_SIZE(ths8200_timings))
+		return -EINVAL;
+
+	timings->timings = ths8200_timings[timings->index];
+
+	return 0;
+}
+
+static int ths8200_dv_timings_cap(struct v4l2_subdev *sd,
+				  struct v4l2_dv_timings_cap *cap)
+{
+	cap->type = V4L2_DV_BT_656_1120;
+	cap->bt.max_width = 1920;
+	cap->bt.max_height = 1080;
+	cap->bt.min_pixelclock = 27000000;
+	cap->bt.max_pixelclock = 148500000;
+	cap->bt.standards = V4L2_DV_BT_STD_CEA861;
+	cap->bt.capabilities = V4L2_DV_BT_CAP_PROGRESSIVE;
+
+	return 0;
+}
+
+/* Specific video subsystem operation handlers */
+static const struct v4l2_subdev_video_ops ths8200_video_ops = {
+	.s_stream = ths8200_s_stream,
+	.s_dv_timings = ths8200_s_dv_timings,
+	.g_dv_timings = ths8200_g_dv_timings,
+	.enum_dv_timings = ths8200_enum_dv_timings,
+	.dv_timings_cap = ths8200_dv_timings_cap,
+};
+
+/* V4L2 top level operation handlers */
+static const struct v4l2_subdev_ops ths8200_ops = {
+	.core  = &ths8200_core_ops,
+	.video = &ths8200_video_ops,
+};
+
+static int ths8200_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	struct ths8200_state *state;
+	struct v4l2_subdev *sd;
+
+	/* Check if the adapter supports the needed features */
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+		return -EIO;
+
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return -ENOMEM;
+
+	sd = &state->sd;
+	v4l2_i2c_subdev_init(sd, client, &ths8200_ops);
+
+	state->chip_version = ths8200_read(sd, THS8200_VERSION);
+	v4l2_dbg(1, debug, sd, "chip version 0x%x\n", state->chip_version);
+
+	ths8200_core_init(sd);
+
+	v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
+		  client->addr << 1, client->adapter->name);
+
+	return 0;
+}
+
+static int ths8200_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+	v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name,
+		 client->addr << 1, client->adapter->name);
+
+	ths8200_s_power(sd, false);
+
+	v4l2_device_unregister_subdev(sd);
+
+	return 0;
+}
+
+static struct i2c_device_id ths8200_id[] = {
+	{ "ths8200", 0 },
+	{},
+};
+MODULE_DEVICE_TABLE(i2c, ths8200_id);
+
+static struct i2c_driver ths8200_driver = {
+	.driver = {
+		.owner = THIS_MODULE,
+		.name = "ths8200",
+	},
+	.probe = ths8200_probe,
+	.remove = ths8200_remove,
+	.id_table = ths8200_id,
+};
+
+module_i2c_driver(ths8200_driver);
diff --git a/drivers/media/i2c/ths8200_regs.h b/drivers/media/i2c/ths8200_regs.h
new file mode 100644
index 00000000000..6bc9fd1111d
--- /dev/null
+++ b/drivers/media/i2c/ths8200_regs.h
@@ -0,0 +1,161 @@
+/*
+ * ths8200 - Texas Instruments THS8200 video encoder driver
+ *
+ * Copyright 2013 Cisco Systems, Inc. and/or its affiliates.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed .as is. WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef THS8200_REGS_H
+#define THS8200_REGS_H
+
+/* Register offset macros */
+#define THS8200_VERSION				0x02
+#define THS8200_CHIP_CTL			0x03
+#define THS8200_CSC_R11				0x04
+#define THS8200_CSC_R12				0x05
+#define THS8200_CSC_R21				0x06
+#define THS8200_CSC_R22				0x07
+#define THS8200_CSC_R31				0x08
+#define THS8200_CSC_R32				0x09
+#define THS8200_CSC_G11				0x0a
+#define THS8200_CSC_G12				0x0b
+#define THS8200_CSC_G21				0x0c
+#define THS8200_CSC_G22				0x0d
+#define THS8200_CSC_G31				0x0e
+#define THS8200_CSC_G32				0x0f
+#define THS8200_CSC_B11				0x10
+#define THS8200_CSC_B12				0x11
+#define THS8200_CSC_B21				0x12
+#define THS8200_CSC_B22				0x13
+#define THS8200_CSC_B31				0x14
+#define THS8200_CSC_B32				0x15
+#define THS8200_CSC_OFFS1			0x16
+#define THS8200_CSC_OFFS12			0x17
+#define THS8200_CSC_OFFS23			0x18
+#define THS8200_CSC_OFFS3			0x19
+#define THS8200_TST_CNTL1			0x1a
+#define THS8200_TST_CNTL2			0x1b
+#define THS8200_DATA_CNTL			0x1c
+#define THS8200_DTG1_Y_SYNC1_LSB		0x1d
+#define THS8200_DTG1_Y_SYNC2_LSB		0x1e
+#define THS8200_DTG1_Y_SYNC3_LSB		0x1f
+#define THS8200_DTG1_CBCR_SYNC1_LSB		0x20
+#define THS8200_DTG1_CBCR_SYNC2_LSB		0x21
+#define THS8200_DTG1_CBCR_SYNC3_LSB		0x22
+#define THS8200_DTG1_Y_SYNC_MSB			0x23
+#define THS8200_DTG1_CBCR_SYNC_MSB		0x24
+#define THS8200_DTG1_SPEC_A			0x25
+#define THS8200_DTG1_SPEC_B			0x26
+#define THS8200_DTG1_SPEC_C			0x27
+#define THS8200_DTG1_SPEC_D_LSB			0x28
+#define THS8200_DTG1_SPEC_D1			0x29
+#define THS8200_DTG1_SPEC_E_LSB			0x2a
+#define THS8200_DTG1_SPEC_DEH_MSB		0x2b
+#define THS8200_DTG1_SPEC_H_LSB			0x2c
+#define THS8200_DTG1_SPEC_I_MSB			0x2d
+#define THS8200_DTG1_SPEC_I_LSB			0x2e
+#define THS8200_DTG1_SPEC_K_LSB			0x2f
+#define THS8200_DTG1_SPEC_K_MSB			0x30
+#define THS8200_DTG1_SPEC_K1			0x31
+#define THS8200_DTG1_SPEC_G_LSB			0x32
+#define THS8200_DTG1_SPEC_G_MSB			0x33
+#define THS8200_DTG1_TOT_PIXELS_MSB		0x34
+#define THS8200_DTG1_TOT_PIXELS_LSB		0x35
+#define THS8200_DTG1_FLD_FLIP_LINECNT_MSB	0x36
+#define THS8200_DTG1_LINECNT_LSB		0x37
+#define THS8200_DTG1_MODE			0x38
+#define THS8200_DTG1_FRAME_FIELD_SZ_MSB		0x39
+#define THS8200_DTG1_FRAME_SZ_LSB		0x3a
+#define THS8200_DTG1_FIELD_SZ_LSB		0x3b
+#define THS8200_DTG1_VESA_CBAR_SIZE		0x3c
+#define THS8200_DAC_CNTL_MSB			0x3d
+#define THS8200_DAC1_CNTL_LSB			0x3e
+#define THS8200_DAC2_CNTL_LSB			0x3f
+#define THS8200_DAC3_CNTL_LSB			0x40
+#define THS8200_CSM_CLIP_GY_LOW			0x41
+#define THS8200_CSM_CLIP_BCB_LOW		0x42
+#define THS8200_CSM_CLIP_RCR_LOW		0x43
+#define THS8200_CSM_CLIP_GY_HIGH		0x44
+#define THS8200_CSM_CLIP_BCB_HIGH		0x45
+#define THS8200_CSM_CLIP_RCR_HIGH		0x46
+#define THS8200_CSM_SHIFT_GY			0x47
+#define THS8200_CSM_SHIFT_BCB			0x48
+#define THS8200_CSM_SHIFT_RCR			0x49
+#define THS8200_CSM_GY_CNTL_MULT_MSB		0x4a
+#define THS8200_CSM_MULT_BCB_RCR_MSB		0x4b
+#define THS8200_CSM_MULT_GY_LSB			0x4c
+#define THS8200_CSM_MULT_BCB_LSB		0x4d
+#define THS8200_CSM_MULT_RCR_LSB		0x4e
+#define THS8200_CSM_MULT_RCR_BCB_CNTL		0x4f
+#define THS8200_CSM_MULT_RCR_LSB		0x4e
+#define THS8200_DTG2_BP1_2_MSB			0x50
+#define THS8200_DTG2_BP3_4_MSB			0x51
+#define THS8200_DTG2_BP5_6_MSB			0x52
+#define THS8200_DTG2_BP7_8_MSB			0x53
+#define THS8200_DTG2_BP9_10_MSB			0x54
+#define THS8200_DTG2_BP11_12_MSB		0x55
+#define THS8200_DTG2_BP13_14_MSB		0x56
+#define THS8200_DTG2_BP15_16_MSB		0x57
+#define THS8200_DTG2_BP1_LSB			0x58
+#define THS8200_DTG2_BP2_LSB			0x59
+#define THS8200_DTG2_BP3_LSB			0x5a
+#define THS8200_DTG2_BP4_LSB			0x5b
+#define THS8200_DTG2_BP5_LSB			0x5c
+#define THS8200_DTG2_BP6_LSB			0x5d
+#define THS8200_DTG2_BP7_LSB			0x5e
+#define THS8200_DTG2_BP8_LSB			0x5f
+#define THS8200_DTG2_BP9_LSB			0x60
+#define THS8200_DTG2_BP10_LSB			0x61
+#define THS8200_DTG2_BP11_LSB			0x62
+#define THS8200_DTG2_BP12_LSB			0x63
+#define THS8200_DTG2_BP13_LSB			0x64
+#define THS8200_DTG2_BP14_LSB			0x65
+#define THS8200_DTG2_BP15_LSB			0x66
+#define THS8200_DTG2_BP16_LSB			0x67
+#define THS8200_DTG2_LINETYPE1			0x68
+#define THS8200_DTG2_LINETYPE2			0x69
+#define THS8200_DTG2_LINETYPE3			0x6a
+#define THS8200_DTG2_LINETYPE4			0x6b
+#define THS8200_DTG2_LINETYPE5			0x6c
+#define THS8200_DTG2_LINETYPE6			0x6d
+#define THS8200_DTG2_LINETYPE7			0x6e
+#define THS8200_DTG2_LINETYPE8			0x6f
+#define THS8200_DTG2_HLENGTH_LSB		0x70
+#define THS8200_DTG2_HLENGTH_LSB_HDLY_MSB	0x71
+#define THS8200_DTG2_HLENGTH_HDLY_LSB		0x72
+#define THS8200_DTG2_VLENGTH1_LSB		0x73
+#define THS8200_DTG2_VLENGTH1_MSB_VDLY1_MSB	0x74
+#define THS8200_DTG2_VDLY1_LSB			0x75
+#define THS8200_DTG2_VLENGTH2_LSB		0x76
+#define THS8200_DTG2_VLENGTH2_MSB_VDLY2_MSB	0x77
+#define THS8200_DTG2_VDLY2_LSB			0x78
+#define THS8200_DTG2_HS_IN_DLY_MSB		0x79
+#define THS8200_DTG2_HS_IN_DLY_LSB		0x7a
+#define THS8200_DTG2_VS_IN_DLY_MSB		0x7b
+#define THS8200_DTG2_VS_IN_DLY_LSB		0x7c
+#define THS8200_DTG2_PIXEL_CNT_MSB		0x7d
+#define THS8200_DTG2_PIXEL_CNT_LSB		0x7e
+#define THS8200_DTG2_LINE_CNT_MSB		0x7f
+#define THS8200_DTG2_LINE_CNT_LSB		0x80
+#define THS8200_DTG2_CNTL			0x82
+#define THS8200_CGMS_CNTL_HEADER		0x83
+#define THS8200_CGMS_PAYLOAD_MSB		0x84
+#define THS8200_CGMS_PAYLOAD_LSB		0x85
+#define THS8200_MISC_PPL_LSB			0x86
+#define THS8200_MISC_PPL_MSB			0x87
+#define THS8200_MISC_LPF_MSB			0x88
+#define THS8200_MISC_LPF_LSB			0x89
+
+#endif /* THS8200_REGS_H */
diff --git a/drivers/media/i2c/tlv320aic23b.c b/drivers/media/i2c/tlv320aic23b.c
index 809a75a558e..ef87f7b09ea 100644
--- a/drivers/media/i2c/tlv320aic23b.c
+++ b/drivers/media/i2c/tlv320aic23b.c
@@ -162,7 +162,7 @@ static int tlv320aic23b_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct tlv320aic23b_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 	sd = &state->sd;
@@ -191,7 +191,6 @@ static int tlv320aic23b_probe(struct i2c_client *client,
 		int err = state->hdl.error;
 
 		v4l2_ctrl_handler_free(&state->hdl);
-		kfree(state);
 		return err;
 	}
 	v4l2_ctrl_handler_setup(&state->hdl);
@@ -205,7 +204,6 @@ static int tlv320aic23b_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&state->hdl);
-	kfree(state);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/tvaudio.c b/drivers/media/i2c/tvaudio.c
index e0634c8b7e0..d76c53a8f02 100644
--- a/drivers/media/i2c/tvaudio.c
+++ b/drivers/media/i2c/tvaudio.c
@@ -38,7 +38,6 @@
 
 #include <media/tvaudio.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 #include <media/i2c-addr.h>
@@ -1838,13 +1837,6 @@ static int tvaudio_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequen
 	return 0;
 }
 
-static int tvaudio_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TVAUDIO, 0);
-}
-
 static int tvaudio_log_status(struct v4l2_subdev *sd)
 {
 	struct CHIPSTATE *chip = to_state(sd);
@@ -1863,7 +1855,6 @@ static const struct v4l2_ctrl_ops tvaudio_ctrl_ops = {
 
 static const struct v4l2_subdev_core_ops tvaudio_core_ops = {
 	.log_status = tvaudio_log_status,
-	.g_chip_ident = tvaudio_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -1910,7 +1901,7 @@ static int tvaudio_probe(struct i2c_client *client, const struct i2c_device_id *
 		printk("\n");
 	}
 
-	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
 	if (!chip)
 		return -ENOMEM;
 	sd = &chip->sd;
@@ -1930,7 +1921,6 @@ static int tvaudio_probe(struct i2c_client *client, const struct i2c_device_id *
 	}
 	if (desc->name == NULL) {
 		v4l2_dbg(1, debug, sd, "no matching chip description found\n");
-		kfree(chip);
 		return -EIO;
 	}
 	v4l2_info(sd, "%s found @ 0x%x (%s)\n", desc->name, client->addr<<1, client->adapter->name);
@@ -2001,7 +1991,6 @@ static int tvaudio_probe(struct i2c_client *client, const struct i2c_device_id *
 		int err = chip->hdl.error;
 
 		v4l2_ctrl_handler_free(&chip->hdl);
-		kfree(chip);
 		return err;
 	}
 	/* set controls to the default values */
@@ -2044,7 +2033,6 @@ static int tvaudio_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&chip->hdl);
-	kfree(chip);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c
index ab8f3fee7e9..9c6d66a9868 100644
--- a/drivers/media/i2c/tvp514x.c
+++ b/drivers/media/i2c/tvp514x.c
@@ -39,7 +39,7 @@
 #include <media/v4l2-device.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-mediabus.h>
-#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-of.h>
 #include <media/v4l2-ctrls.h>
 #include <media/tvp514x.h>
 #include <media/media-entity.h>
@@ -123,6 +123,8 @@ struct tvp514x_decoder {
 	/* mc related members */
 	struct media_pad pad;
 	struct v4l2_mbus_framefmt format;
+
+	struct tvp514x_reg *int_seq;
 };
 
 /* TVP514x default register values */
@@ -543,8 +545,6 @@ static int tvp514x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id)
 	if (std_id == NULL)
 		return -EINVAL;
 
-	*std_id = V4L2_STD_UNKNOWN;
-
 	/* To query the standard the TVP514x must power on the ADCs. */
 	if (!decoder->streaming) {
 		tvp514x_s_stream(sd, 1);
@@ -553,8 +553,10 @@ static int tvp514x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id)
 
 	/* query the current standard */
 	current_std = tvp514x_query_current_std(sd);
-	if (current_std == STD_INVALID)
+	if (current_std == STD_INVALID) {
+		*std_id = V4L2_STD_UNKNOWN;
 		return 0;
+	}
 
 	input_sel = decoder->input;
 
@@ -595,10 +597,12 @@ static int tvp514x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id)
 	}
 	/* check whether signal is locked */
 	sync_lock_status = tvp514x_read_reg(sd, REG_STATUS1);
-	if (lock_mask != (sync_lock_status & lock_mask))
+	if (lock_mask != (sync_lock_status & lock_mask)) {
+		*std_id = V4L2_STD_UNKNOWN;
 		return 0;	/* No input detected */
+	}
 
-	*std_id = decoder->std_list[current_std].standard.id;
+	*std_id &= decoder->std_list[current_std].standard.id;
 
 	v4l2_dbg(1, debug, sd, "Current STD: %s\n",
 			decoder->std_list[current_std].standard.name);
@@ -862,7 +866,6 @@ tvp514x_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *a)
 static int tvp514x_s_stream(struct v4l2_subdev *sd, int enable)
 {
 	int err = 0;
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct tvp514x_decoder *decoder = to_decoder(sd);
 
 	if (decoder->streaming == enable)
@@ -882,11 +885,8 @@ static int tvp514x_s_stream(struct v4l2_subdev *sd, int enable)
 	}
 	case 1:
 	{
-		struct tvp514x_reg *int_seq = (struct tvp514x_reg *)
-				client->driver->id_table->driver_data;
-
 		/* Power Up Sequence */
-		err = tvp514x_write_regs(sd, int_seq);
+		err = tvp514x_write_regs(sd, decoder->int_seq);
 		if (err) {
 			v4l2_err(sd, "Unable to turn on decoder\n");
 			return err;
@@ -1055,6 +1055,42 @@ static struct tvp514x_decoder tvp514x_dev = {
 
 };
 
+static struct tvp514x_platform_data *
+tvp514x_get_pdata(struct i2c_client *client)
+{
+	struct tvp514x_platform_data *pdata;
+	struct v4l2_of_endpoint bus_cfg;
+	struct device_node *endpoint;
+	unsigned int flags;
+
+	if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
+		return client->dev.platform_data;
+
+	endpoint = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
+	if (!endpoint)
+		return NULL;
+
+	pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		goto done;
+
+	v4l2_of_parse_endpoint(endpoint, &bus_cfg);
+	flags = bus_cfg.bus.parallel.flags;
+
+	if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
+		pdata->hs_polarity = 1;
+
+	if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
+		pdata->vs_polarity = 1;
+
+	if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
+		pdata->clk_polarity = 1;
+
+done:
+	of_node_put(endpoint);
+	return pdata;
+}
+
 /**
  * tvp514x_probe() - decoder driver i2c probe handler
  * @client: i2c driver client device structure
@@ -1066,19 +1102,20 @@ static struct tvp514x_decoder tvp514x_dev = {
 static int
 tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
 {
+	struct tvp514x_platform_data *pdata = tvp514x_get_pdata(client);
 	struct tvp514x_decoder *decoder;
 	struct v4l2_subdev *sd;
 	int ret;
 
+	if (pdata == NULL) {
+		dev_err(&client->dev, "No platform data\n");
+		return -EINVAL;
+	}
+
 	/* Check if the adapter supports the needed features */
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		return -EIO;
 
-	if (!client->dev.platform_data) {
-		v4l2_err(client, "No platform data!!\n");
-		return -ENODEV;
-	}
-
 	decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
 	if (!decoder)
 		return -ENOMEM;
@@ -1089,8 +1126,10 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	memcpy(decoder->tvp514x_regs, tvp514x_reg_list_default,
 			sizeof(tvp514x_reg_list_default));
 
+	decoder->int_seq = (struct tvp514x_reg *)id->driver_data;
+
 	/* Copy board specific information here */
-	decoder->pdata = client->dev.platform_data;
+	decoder->pdata = pdata;
 
 	/**
 	 * Fetch platform specific data, and configure the
@@ -1109,7 +1148,6 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	/* Register with V4L2 layer as slave device */
 	sd = &decoder->sd;
 	v4l2_i2c_subdev_init(sd, client, &tvp514x_ops);
-	strlcpy(sd->name, TVP514X_MODULE_NAME, sizeof(sd->name));
 
 #if defined(CONFIG_MEDIA_CONTROLLER)
 	decoder->pad.flags = MEDIA_PAD_FL_SOURCE;
@@ -1120,7 +1158,6 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	if (ret < 0) {
 		v4l2_err(sd, "%s decoder driver failed to register !!\n",
 			 sd->name);
-		kfree(decoder);
 		return ret;
 	}
 #endif
@@ -1231,8 +1268,20 @@ static const struct i2c_device_id tvp514x_id[] = {
 
 MODULE_DEVICE_TABLE(i2c, tvp514x_id);
 
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id tvp514x_of_match[] = {
+	{ .compatible = "ti,tvp5146", },
+	{ .compatible = "ti,tvp5146m2", },
+	{ .compatible = "ti,tvp5147", },
+	{ .compatible = "ti,tvp5147m1", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, tvp514x_of_match);
+#endif
+
 static struct i2c_driver tvp514x_driver = {
 	.driver = {
+		.of_match_table = of_match_ptr(tvp514x_of_match),
 		.owner = THIS_MODULE,
 		.name = TVP514X_MODULE_NAME,
 	},
diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index 485159a3c0b..89c0b13463b 100644
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -12,7 +12,6 @@
 #include <linux/module.h>
 #include <media/v4l2-device.h>
 #include <media/tvp5150.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 #include "tvp5150_reg.h"
@@ -727,13 +726,11 @@ static int tvp5150_set_std(struct v4l2_subdev *sd, v4l2_std_id std)
 
 	/* First tests should be against specific std */
 
-	if (std == V4L2_STD_ALL) {
-		fmt = VIDEO_STD_AUTO_SWITCH_BIT;	/* Autodetect mode */
-	} else if (std & V4L2_STD_NTSC_443) {
+	if (std == V4L2_STD_NTSC_443) {
 		fmt = VIDEO_STD_NTSC_4_43_BIT;
-	} else if (std & V4L2_STD_PAL_M) {
+	} else if (std == V4L2_STD_PAL_M) {
 		fmt = VIDEO_STD_PAL_M_BIT;
-	} else if (std & (V4L2_STD_PAL_N | V4L2_STD_PAL_Nc)) {
+	} else if (std == V4L2_STD_PAL_N || std == V4L2_STD_PAL_Nc) {
 		fmt = VIDEO_STD_PAL_COMBINATION_N_BIT;
 	} else {
 		/* Then, test against generic ones */
@@ -1031,31 +1028,11 @@ static int tvp5150_g_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_f
 	return 0;
 }
 
-static int tvp5150_g_chip_ident(struct v4l2_subdev *sd,
-				struct v4l2_dbg_chip_ident *chip)
-{
-	int rev;
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	rev = tvp5150_read(sd, TVP5150_ROM_MAJOR_VER) << 8 |
-	      tvp5150_read(sd, TVP5150_ROM_MINOR_VER);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TVP5150,
-					  rev);
-}
-
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int tvp5150_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
 	int res;
 
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	res = tvp5150_read(sd, reg->reg & 0xff);
 	if (res < 0) {
 		v4l2_err(sd, "%s: failed with error = %d\n", __func__, res);
@@ -1069,12 +1046,6 @@ static int tvp5150_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *
 
 static int tvp5150_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	tvp5150_write(sd, reg->reg & 0xff, reg->val & 0xff);
 	return 0;
 }
@@ -1098,7 +1069,6 @@ static const struct v4l2_subdev_core_ops tvp5150_core_ops = {
 	.log_status = tvp5150_log_status,
 	.s_std = tvp5150_s_std,
 	.reset = tvp5150_reset,
-	.g_chip_ident = tvp5150_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = tvp5150_g_register,
 	.s_register = tvp5150_s_register,
@@ -1152,10 +1122,9 @@ static int tvp5150_probe(struct i2c_client *c,
 	     I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
 		return -EIO;
 
-	core = kzalloc(sizeof(struct tvp5150), GFP_KERNEL);
-	if (!core) {
+	core = devm_kzalloc(&c->dev, sizeof(*core), GFP_KERNEL);
+	if (!core)
 		return -ENOMEM;
-	}
 	sd = &core->sd;
 	v4l2_i2c_subdev_init(sd, c, &tvp5150_ops);
 
@@ -1166,7 +1135,7 @@ static int tvp5150_probe(struct i2c_client *c,
 	for (i = 0; i < 4; i++) {
 		res = tvp5150_read(sd, TVP5150_MSB_DEV_ID + i);
 		if (res < 0)
-			goto free_core;
+			return res;
 		tvp5150_id[i] = res;
 	}
 
@@ -1209,7 +1178,7 @@ static int tvp5150_probe(struct i2c_client *c,
 	if (core->hdl.error) {
 		res = core->hdl.error;
 		v4l2_ctrl_handler_free(&core->hdl);
-		goto free_core;
+		return res;
 	}
 	v4l2_ctrl_handler_setup(&core->hdl);
 
@@ -1225,10 +1194,6 @@ static int tvp5150_probe(struct i2c_client *c,
 	if (debug > 1)
 		tvp5150_log_status(sd);
 	return 0;
-
-free_core:
-	kfree(core);
-	return res;
 }
 
 static int tvp5150_remove(struct i2c_client *c)
@@ -1242,7 +1207,6 @@ static int tvp5150_remove(struct i2c_client *c)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&decoder->hdl);
-	kfree(to_tvp5150(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/tvp7002.c b/drivers/media/i2c/tvp7002.c
index 027809cca5f..a4e49483de6 100644
--- a/drivers/media/i2c/tvp7002.c
+++ b/drivers/media/i2c/tvp7002.c
@@ -32,7 +32,6 @@
 #include <linux/v4l2-dv-timings.h>
 #include <media/tvp7002.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-ctrls.h>
 #include "tvp7002_reg.h"
@@ -41,9 +40,6 @@ MODULE_DESCRIPTION("TI TVP7002 Video and Graphics Digitizer driver");
 MODULE_AUTHOR("Santiago Nunez-Corrales <santiago.nunez@ridgerun.com>");
 MODULE_LICENSE("GPL");
 
-/* Module Name */
-#define TVP7002_MODULE_NAME	"tvp7002"
-
 /* I2C retry attempts */
 #define I2C_RETRY_COUNT		(5)
 
@@ -424,6 +420,7 @@ struct tvp7002 {
 	int streaming;
 
 	const struct tvp7002_timings_definition *current_timings;
+	struct media_pad pad;
 };
 
 /*
@@ -535,29 +532,6 @@ static inline void tvp7002_write_err(struct v4l2_subdev *sd, u8 reg,
 }
 
 /*
- * tvp7002_g_chip_ident() - Get chip identification number
- * @sd: ptr to v4l2_subdev struct
- * @chip: ptr to v4l2_dbg_chip_ident struct
- *
- * Obtains the chip's identification number.
- * Returns zero or -EINVAL if read operation fails.
- */
-static int tvp7002_g_chip_ident(struct v4l2_subdev *sd,
-					struct v4l2_dbg_chip_ident *chip)
-{
-	u8 rev;
-	int error;
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	error = tvp7002_read(sd, TVP7002_CHIP_REV, &rev);
-
-	if (error < 0)
-		return error;
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_TVP7002, rev);
-}
-
-/*
  * tvp7002_write_inittab() - Write initialization values
  * @sd: ptr to v4l2_subdev struct
  * @regs: ptr to i2c_reg_value struct
@@ -738,23 +712,17 @@ static int tvp7002_query_dv_timings(struct v4l2_subdev *sd,
  *
  * Get the value of a TVP7002 decoder device register.
  * Returns zero when successful, -EINVAL if register read fails or
- * access to I2C client fails, -EPERM if the call is not allowed
- * by disabled CAP_SYS_ADMIN.
+ * access to I2C client fails.
  */
 static int tvp7002_g_register(struct v4l2_subdev *sd,
 						struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	u8 val;
 	int ret;
 
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	ret = tvp7002_read(sd, reg->reg & 0xff, &val);
 	reg->val = val;
+	reg->size = 1;
 	return ret;
 }
 
@@ -764,19 +732,11 @@ static int tvp7002_g_register(struct v4l2_subdev *sd,
  * @reg: ptr to v4l2_dbg_register struct
  *
  * Get the value of a TVP7002 decoder device register.
- * Returns zero when successful, -EINVAL if register read fails or
- * -EPERM if call not allowed.
+ * Returns zero when successful, -EINVAL if register read fails.
  */
 static int tvp7002_s_register(struct v4l2_subdev *sd,
 						const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	return tvp7002_write(sd, reg->reg & 0xff, reg->val & 0xff);
 }
 #endif
@@ -880,9 +840,67 @@ static const struct v4l2_ctrl_ops tvp7002_ctrl_ops = {
 	.s_ctrl = tvp7002_s_ctrl,
 };
 
+/*
+ * tvp7002_enum_mbus_code() - Enum supported digital video format on pad
+ * @sd: pointer to standard V4L2 sub-device structure
+ * @fh: file handle for the subdev
+ * @code: pointer to subdev enum mbus code struct
+ *
+ * Enumerate supported digital video formats for pad.
+ */
+static int
+tvp7002_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+		       struct v4l2_subdev_mbus_code_enum *code)
+{
+	/* Check requested format index is within range */
+	if (code->index != 0)
+		return -EINVAL;
+
+	code->code = V4L2_MBUS_FMT_YUYV10_1X20;
+
+	return 0;
+}
+
+/*
+ * tvp7002_get_pad_format() - get video format on pad
+ * @sd: pointer to standard V4L2 sub-device structure
+ * @fh: file handle for the subdev
+ * @fmt: pointer to subdev format struct
+ *
+ * get video format for pad.
+ */
+static int
+tvp7002_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+		       struct v4l2_subdev_format *fmt)
+{
+	struct tvp7002 *tvp7002 = to_tvp7002(sd);
+
+	fmt->format.code = V4L2_MBUS_FMT_YUYV10_1X20;
+	fmt->format.width = tvp7002->current_timings->timings.bt.width;
+	fmt->format.height = tvp7002->current_timings->timings.bt.height;
+	fmt->format.field = tvp7002->current_timings->scanmode;
+	fmt->format.colorspace = tvp7002->current_timings->color_space;
+
+	return 0;
+}
+
+/*
+ * tvp7002_set_pad_format() - set video format on pad
+ * @sd: pointer to standard V4L2 sub-device structure
+ * @fh: file handle for the subdev
+ * @fmt: pointer to subdev format struct
+ *
+ * set video format for pad.
+ */
+static int
+tvp7002_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+		       struct v4l2_subdev_format *fmt)
+{
+	return tvp7002_get_pad_format(sd, fh, fmt);
+}
+
 /* V4L2 core operation handlers */
 static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
-	.g_chip_ident = tvp7002_g_chip_ident,
 	.log_status = tvp7002_log_status,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
@@ -910,10 +928,18 @@ static const struct v4l2_subdev_video_ops tvp7002_video_ops = {
 	.enum_mbus_fmt = tvp7002_enum_mbus_fmt,
 };
 
+/* media pad related operation handlers */
+static const struct v4l2_subdev_pad_ops tvp7002_pad_ops = {
+	.enum_mbus_code = tvp7002_enum_mbus_code,
+	.get_fmt = tvp7002_get_pad_format,
+	.set_fmt = tvp7002_set_pad_format,
+};
+
 /* V4L2 top level operation handlers */
 static const struct v4l2_subdev_ops tvp7002_ops = {
 	.core = &tvp7002_core_ops,
 	.video = &tvp7002_video_ops,
+	.pad = &tvp7002_pad_ops,
 };
 
 /*
@@ -993,19 +1019,34 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
 	timings = device->current_timings->timings;
 	error = tvp7002_s_dv_timings(sd, &timings);
 
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	device->pad.flags = MEDIA_PAD_FL_SOURCE;
+	device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	device->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
+
+	error = media_entity_init(&device->sd.entity, 1, &device->pad, 0);
+	if (error < 0)
+		return error;
+#endif
+
 	v4l2_ctrl_handler_init(&device->hdl, 1);
 	v4l2_ctrl_new_std(&device->hdl, &tvp7002_ctrl_ops,
 			V4L2_CID_GAIN, 0, 255, 1, 0);
 	sd->ctrl_handler = &device->hdl;
 	if (device->hdl.error) {
-		int err = device->hdl.error;
-
-		v4l2_ctrl_handler_free(&device->hdl);
-		return err;
+		error = device->hdl.error;
+		goto error;
 	}
 	v4l2_ctrl_handler_setup(&device->hdl);
 
 	return 0;
+
+error:
+	v4l2_ctrl_handler_free(&device->hdl);
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	media_entity_cleanup(&device->sd.entity);
+#endif
+	return error;
 }
 
 /*
@@ -1022,7 +1063,9 @@ static int tvp7002_remove(struct i2c_client *c)
 
 	v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
 				"on address 0x%x\n", c->addr);
-
+#if defined(CONFIG_MEDIA_CONTROLLER)
+	media_entity_cleanup(&device->sd.entity);
+#endif
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&device->hdl);
 	return 0;
diff --git a/drivers/media/i2c/tw2804.c b/drivers/media/i2c/tw2804.c
index c5dc2c3bf2d..f58607df619 100644
--- a/drivers/media/i2c/tw2804.c
+++ b/drivers/media/i2c/tw2804.c
@@ -23,7 +23,6 @@
 #include <linux/slab.h>
 #include <media/v4l2-subdev.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 #define TW2804_REG_AUTOGAIN		0x02
@@ -368,8 +367,7 @@ static int tw2804_probe(struct i2c_client *client,
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		return -ENODEV;
 
-	state = kzalloc(sizeof(struct tw2804), GFP_KERNEL);
-
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 	sd = &state->sd;
@@ -410,7 +408,6 @@ static int tw2804_probe(struct i2c_client *client,
 	err = state->hdl.error;
 	if (err) {
 		v4l2_ctrl_handler_free(&state->hdl);
-		kfree(state);
 		return err;
 	}
 
@@ -427,7 +424,6 @@ static int tw2804_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&state->hdl);
-	kfree(state);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/tw9903.c b/drivers/media/i2c/tw9903.c
index 87880b19d8c..285b759a5f7 100644
--- a/drivers/media/i2c/tw9903.c
+++ b/drivers/media/i2c/tw9903.c
@@ -215,7 +215,7 @@ static int tw9903_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%02x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	dec = kzalloc(sizeof(struct tw9903), GFP_KERNEL);
+	dec = devm_kzalloc(&client->dev, sizeof(*dec), GFP_KERNEL);
 	if (dec == NULL)
 		return -ENOMEM;
 	sd = &dec->sd;
@@ -233,7 +233,6 @@ static int tw9903_probe(struct i2c_client *client,
 		int err = hdl->error;
 
 		v4l2_ctrl_handler_free(hdl);
-		kfree(dec);
 		return err;
 	}
 
@@ -242,7 +241,6 @@ static int tw9903_probe(struct i2c_client *client,
 
 	if (write_regs(sd, initial_registers) < 0) {
 		v4l2_err(client, "error initializing TW9903\n");
-		kfree(dec);
 		return -EINVAL;
 	}
 
@@ -255,7 +253,6 @@ static int tw9903_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&to_state(sd)->hdl);
-	kfree(to_state(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/tw9906.c b/drivers/media/i2c/tw9906.c
index accd79e5a7f..f6bef25bd9c 100644
--- a/drivers/media/i2c/tw9906.c
+++ b/drivers/media/i2c/tw9906.c
@@ -183,7 +183,7 @@ static int tw9906_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%02x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	dec = kzalloc(sizeof(struct tw9906), GFP_KERNEL);
+	dec = devm_kzalloc(&client->dev, sizeof(*dec), GFP_KERNEL);
 	if (dec == NULL)
 		return -ENOMEM;
 	sd = &dec->sd;
@@ -201,7 +201,6 @@ static int tw9906_probe(struct i2c_client *client,
 		int err = hdl->error;
 
 		v4l2_ctrl_handler_free(hdl);
-		kfree(dec);
 		return err;
 	}
 
@@ -210,7 +209,6 @@ static int tw9906_probe(struct i2c_client *client,
 
 	if (write_regs(sd, initial_registers) < 0) {
 		v4l2_err(client, "error initializing TW9906\n");
-		kfree(dec);
 		return -EINVAL;
 	}
 
@@ -223,7 +221,6 @@ static int tw9906_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&to_state(sd)->hdl);
-	kfree(to_state(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/uda1342.c b/drivers/media/i2c/uda1342.c
index 3af408556d2..081786d176d 100644
--- a/drivers/media/i2c/uda1342.c
+++ b/drivers/media/i2c/uda1342.c
@@ -69,7 +69,7 @@ static int uda1342_probe(struct i2c_client *client,
 	dev_dbg(&client->dev, "initializing UDA1342 at address %d on %s\n",
 		client->addr, adapter->name);
 
-	sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
+	sd = devm_kzalloc(&client->dev, sizeof(*sd), GFP_KERNEL);
 	if (sd == NULL)
 		return -ENOMEM;
 
@@ -89,7 +89,6 @@ static int uda1342_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(sd);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/upd64031a.c b/drivers/media/i2c/upd64031a.c
index f0a09214c51..d248e6a12b8 100644
--- a/drivers/media/i2c/upd64031a.c
+++ b/drivers/media/i2c/upd64031a.c
@@ -27,7 +27,6 @@
 #include <linux/videodev2.h>
 #include <linux/slab.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/upd64031a.h>
 
 /* --------------------- read registers functions define -------------------- */
@@ -147,13 +146,6 @@ static int upd64031a_s_routing(struct v4l2_subdev *sd,
 	return upd64031a_s_frequency(sd, NULL);
 }
 
-static int upd64031a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_UPD64031A, 0);
-}
-
 static int upd64031a_log_status(struct v4l2_subdev *sd)
 {
 	v4l2_info(sd, "Status: SA00=0x%02x SA01=0x%02x\n",
@@ -164,12 +156,6 @@ static int upd64031a_log_status(struct v4l2_subdev *sd)
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int upd64031a_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->val = upd64031a_read(sd, reg->reg & 0xff);
 	reg->size = 1;
 	return 0;
@@ -177,12 +163,6 @@ static int upd64031a_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register
 
 static int upd64031a_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	upd64031a_write(sd, reg->reg & 0xff, reg->val & 0xff);
 	return 0;
 }
@@ -192,7 +172,6 @@ static int upd64031a_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_re
 
 static const struct v4l2_subdev_core_ops upd64031a_core_ops = {
 	.log_status = upd64031a_log_status,
-	.g_chip_ident = upd64031a_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = upd64031a_g_register,
 	.s_register = upd64031a_s_register,
@@ -230,7 +209,7 @@ static int upd64031a_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct upd64031a_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 	sd = &state->sd;
@@ -249,7 +228,6 @@ static int upd64031a_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_state(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/upd64083.c b/drivers/media/i2c/upd64083.c
index 343e0215f74..3a152ce7258 100644
--- a/drivers/media/i2c/upd64083.c
+++ b/drivers/media/i2c/upd64083.c
@@ -27,7 +27,6 @@
 #include <linux/videodev2.h>
 #include <linux/slab.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/upd64083.h>
 
 MODULE_DESCRIPTION("uPD64083 driver");
@@ -122,12 +121,6 @@ static int upd64083_s_routing(struct v4l2_subdev *sd,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int upd64083_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->val = upd64083_read(sd, reg->reg & 0xff);
 	reg->size = 1;
 	return 0;
@@ -135,24 +128,11 @@ static int upd64083_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register
 
 static int upd64083_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	upd64083_write(sd, reg->reg & 0xff, reg->val & 0xff);
 	return 0;
 }
 #endif
 
-static int upd64083_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_UPD64083, 0);
-}
-
 static int upd64083_log_status(struct v4l2_subdev *sd)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
@@ -169,7 +149,6 @@ static int upd64083_log_status(struct v4l2_subdev *sd)
 
 static const struct v4l2_subdev_core_ops upd64083_core_ops = {
 	.log_status = upd64083_log_status,
-	.g_chip_ident = upd64083_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = upd64083_g_register,
 	.s_register = upd64083_s_register,
@@ -202,7 +181,7 @@ static int upd64083_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct upd64083_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 	sd = &state->sd;
@@ -221,7 +200,6 @@ static int upd64083_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_state(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/vp27smpx.c b/drivers/media/i2c/vp27smpx.c
index e71f139695a..6a3a3ff7ee6 100644
--- a/drivers/media/i2c/vp27smpx.c
+++ b/drivers/media/i2c/vp27smpx.c
@@ -29,7 +29,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 
 MODULE_DESCRIPTION("vp27smpx driver");
 MODULE_AUTHOR("Hans Verkuil");
@@ -112,13 +111,6 @@ static int vp27smpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
 	return 0;
 }
 
-static int vp27smpx_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_VP27SMPX, 0);
-}
-
 static int vp27smpx_log_status(struct v4l2_subdev *sd)
 {
 	struct vp27smpx_state *state = to_state(sd);
@@ -132,7 +124,6 @@ static int vp27smpx_log_status(struct v4l2_subdev *sd)
 
 static const struct v4l2_subdev_core_ops vp27smpx_core_ops = {
 	.log_status = vp27smpx_log_status,
-	.g_chip_ident = vp27smpx_g_chip_ident,
 	.s_std = vp27smpx_s_std,
 };
 
@@ -169,7 +160,7 @@ static int vp27smpx_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct vp27smpx_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 	sd = &state->sd;
@@ -186,7 +177,6 @@ static int vp27smpx_remove(struct i2c_client *client)
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
 
 	v4l2_device_unregister_subdev(sd);
-	kfree(to_state(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/vpx3220.c b/drivers/media/i2c/vpx3220.c
index 2f67b4c5c82..ece90df6a04 100644
--- a/drivers/media/i2c/vpx3220.c
+++ b/drivers/media/i2c/vpx3220.c
@@ -27,7 +27,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video decoder driver");
@@ -49,7 +48,6 @@ struct vpx3220 {
 	unsigned char reg[255];
 
 	v4l2_std_id norm;
-	int ident;
 	int input;
 	int enable;
 };
@@ -297,7 +295,7 @@ static int vpx3220_init(struct v4l2_subdev *sd, u32 val)
 static int vpx3220_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd)
 {
 	int res = V4L2_IN_ST_NO_SIGNAL, status;
-	v4l2_std_id std = 0;
+	v4l2_std_id std = pstd ? *pstd : V4L2_STD_ALL;
 
 	status = vpx3220_fp_read(sd, 0x0f3);
 
@@ -314,19 +312,21 @@ static int vpx3220_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pst
 		case 0x10:
 		case 0x14:
 		case 0x18:
-			std = V4L2_STD_PAL;
+			std &= V4L2_STD_PAL;
 			break;
 
 		case 0x08:
-			std = V4L2_STD_SECAM;
+			std &= V4L2_STD_SECAM;
 			break;
 
 		case 0x04:
 		case 0x0c:
 		case 0x1c:
-			std = V4L2_STD_NTSC;
+			std &= V4L2_STD_NTSC;
 			break;
 		}
+	} else {
+		std = V4L2_STD_UNKNOWN;
 	}
 	if (pstd)
 		*pstd = std;
@@ -442,14 +442,6 @@ static int vpx3220_s_ctrl(struct v4l2_ctrl *ctrl)
 	return -EINVAL;
 }
 
-static int vpx3220_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct vpx3220 *decoder = to_vpx3220(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, decoder->ident, 0);
-}
-
 /* ----------------------------------------------------------------------- */
 
 static const struct v4l2_ctrl_ops vpx3220_ctrl_ops = {
@@ -457,7 +449,6 @@ static const struct v4l2_ctrl_ops vpx3220_ctrl_ops = {
 };
 
 static const struct v4l2_subdev_core_ops vpx3220_core_ops = {
-	.g_chip_ident = vpx3220_g_chip_ident,
 	.init = vpx3220_init,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
@@ -499,7 +490,7 @@ static int vpx3220_probe(struct i2c_client *client,
 		I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
 		return -ENODEV;
 
-	decoder = kzalloc(sizeof(struct vpx3220), GFP_KERNEL);
+	decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
 	if (decoder == NULL)
 		return -ENOMEM;
 	sd = &decoder->sd;
@@ -521,7 +512,6 @@ static int vpx3220_probe(struct i2c_client *client,
 		int err = decoder->hdl.error;
 
 		v4l2_ctrl_handler_free(&decoder->hdl);
-		kfree(decoder);
 		return err;
 	}
 	v4l2_ctrl_handler_setup(&decoder->hdl);
@@ -529,7 +519,6 @@ static int vpx3220_probe(struct i2c_client *client,
 	ver = i2c_smbus_read_byte_data(client, 0x00);
 	pn = (i2c_smbus_read_byte_data(client, 0x02) << 8) +
 		i2c_smbus_read_byte_data(client, 0x01);
-	decoder->ident = V4L2_IDENT_VPX3220A;
 	if (ver == 0xec) {
 		switch (pn) {
 		case 0x4680:
@@ -537,11 +526,9 @@ static int vpx3220_probe(struct i2c_client *client,
 			break;
 		case 0x4260:
 			name = "vpx3216b";
-			decoder->ident = V4L2_IDENT_VPX3216B;
 			break;
 		case 0x4280:
 			name = "vpx3214c";
-			decoder->ident = V4L2_IDENT_VPX3214C;
 			break;
 		}
 	}
@@ -566,7 +553,7 @@ static int vpx3220_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&decoder->hdl);
-	kfree(decoder);
+
 	return 0;
 }
 
diff --git a/drivers/media/i2c/vs6624.c b/drivers/media/i2c/vs6624.c
index f366fad6269..25bdd9312fe 100644
--- a/drivers/media/i2c/vs6624.c
+++ b/drivers/media/i2c/vs6624.c
@@ -27,7 +27,6 @@
 #include <linux/types.h>
 #include <linux/videodev2.h>
 
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-mediabus.h>
@@ -722,27 +721,9 @@ static int vs6624_s_stream(struct v4l2_subdev *sd, int enable)
 	return 0;
 }
 
-static int vs6624_g_chip_ident(struct v4l2_subdev *sd,
-		struct v4l2_dbg_chip_ident *chip)
-{
-	int rev;
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	rev = (vs6624_read(sd, VS6624_FW_VSN_MAJOR) << 8)
-		| vs6624_read(sd, VS6624_FW_VSN_MINOR);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_VS6624, rev);
-}
-
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 static int vs6624_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->val = vs6624_read(sd, reg->reg & 0xffff);
 	reg->size = 1;
 	return 0;
@@ -750,12 +731,6 @@ static int vs6624_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *r
 
 static int vs6624_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 {
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	if (!v4l2_chip_match_i2c_client(client, &reg->match))
-		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	vs6624_write(sd, reg->reg & 0xffff, reg->val & 0xff);
 	return 0;
 }
@@ -766,7 +741,6 @@ static const struct v4l2_ctrl_ops vs6624_ctrl_ops = {
 };
 
 static const struct v4l2_subdev_core_ops vs6624_core_ops = {
-	.g_chip_ident = vs6624_g_chip_ident,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register = vs6624_g_register,
 	.s_register = vs6624_s_register,
@@ -805,20 +779,18 @@ static int vs6624_probe(struct i2c_client *client,
 	if (ce == NULL)
 		return -EINVAL;
 
-	ret = gpio_request(*ce, "VS6624 Chip Enable");
+	ret = devm_gpio_request_one(&client->dev, *ce, GPIOF_OUT_INIT_HIGH,
+				    "VS6624 Chip Enable");
 	if (ret) {
 		v4l_err(client, "failed to request GPIO %d\n", *ce);
 		return ret;
 	}
-	gpio_direction_output(*ce, 1);
 	/* wait 100ms before any further i2c writes are performed */
 	mdelay(100);
 
-	sensor = kzalloc(sizeof(*sensor), GFP_KERNEL);
-	if (sensor == NULL) {
-		gpio_free(*ce);
+	sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
+	if (sensor == NULL)
 		return -ENOMEM;
-	}
 
 	sd = &sensor->sd;
 	v4l2_i2c_subdev_init(sd, client, &vs6624_ops);
@@ -866,30 +838,22 @@ static int vs6624_probe(struct i2c_client *client,
 		int err = hdl->error;
 
 		v4l2_ctrl_handler_free(hdl);
-		kfree(sensor);
-		gpio_free(*ce);
 		return err;
 	}
 
 	/* initialize the hardware to the default control values */
 	ret = v4l2_ctrl_handler_setup(hdl);
-	if (ret) {
+	if (ret)
 		v4l2_ctrl_handler_free(hdl);
-		kfree(sensor);
-		gpio_free(*ce);
-	}
 	return ret;
 }
 
 static int vs6624_remove(struct i2c_client *client)
 {
 	struct v4l2_subdev *sd = i2c_get_clientdata(client);
-	struct vs6624 *sensor = to_vs6624(sd);
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(sd->ctrl_handler);
-	gpio_free(sensor->ce_pin);
-	kfree(sensor);
 	return 0;
 }
 
diff --git a/drivers/media/i2c/wm8739.c b/drivers/media/i2c/wm8739.c
index 3bb99e93feb..3be73f6a40e 100644
--- a/drivers/media/i2c/wm8739.c
+++ b/drivers/media/i2c/wm8739.c
@@ -29,7 +29,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 
 MODULE_DESCRIPTION("wm8739 driver");
@@ -160,13 +159,6 @@ static int wm8739_s_clock_freq(struct v4l2_subdev *sd, u32 audiofreq)
 	return 0;
 }
 
-static int wm8739_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_WM8739, 0);
-}
-
 static int wm8739_log_status(struct v4l2_subdev *sd)
 {
 	struct wm8739_state *state = to_state(sd);
@@ -184,7 +176,6 @@ static const struct v4l2_ctrl_ops wm8739_ctrl_ops = {
 
 static const struct v4l2_subdev_core_ops wm8739_core_ops = {
 	.log_status = wm8739_log_status,
-	.g_chip_ident = wm8739_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -220,7 +211,7 @@ static int wm8739_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct wm8739_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 	sd = &state->sd;
@@ -237,7 +228,6 @@ static int wm8739_probe(struct i2c_client *client,
 		int err = state->hdl.error;
 
 		v4l2_ctrl_handler_free(&state->hdl);
-		kfree(state);
 		return err;
 	}
 	v4l2_ctrl_cluster(3, &state->volume);
@@ -271,7 +261,6 @@ static int wm8739_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&state->hdl);
-	kfree(to_state(sd));
 	return 0;
 }
 
diff --git a/drivers/media/i2c/wm8775.c b/drivers/media/i2c/wm8775.c
index 27c27b4ae23..3f584a7d078 100644
--- a/drivers/media/i2c/wm8775.c
+++ b/drivers/media/i2c/wm8775.c
@@ -33,7 +33,6 @@
 #include <linux/i2c.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
 #include <media/v4l2-ctrls.h>
 #include <media/wm8775.h>
 
@@ -158,13 +157,6 @@ static int wm8775_s_ctrl(struct v4l2_ctrl *ctrl)
 	return -EINVAL;
 }
 
-static int wm8775_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(sd);
-
-	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_WM8775, 0);
-}
-
 static int wm8775_log_status(struct v4l2_subdev *sd)
 {
 	struct wm8775_state *state = to_state(sd);
@@ -188,7 +180,6 @@ static const struct v4l2_ctrl_ops wm8775_ctrl_ops = {
 
 static const struct v4l2_subdev_core_ops wm8775_core_ops = {
 	.log_status = wm8775_log_status,
-	.g_chip_ident = wm8775_g_chip_ident,
 	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
@@ -241,7 +232,7 @@ static int wm8775_probe(struct i2c_client *client,
 	v4l_info(client, "chip found @ 0x%02x (%s)\n",
 			client->addr << 1, client->adapter->name);
 
-	state = kzalloc(sizeof(struct wm8775_state), GFP_KERNEL);
+	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return -ENOMEM;
 	sd = &state->sd;
@@ -261,7 +252,6 @@ static int wm8775_probe(struct i2c_client *client,
 	err = state->hdl.error;
 	if (err) {
 		v4l2_ctrl_handler_free(&state->hdl);
-		kfree(state);
 		return err;
 	}
 
@@ -319,7 +309,6 @@ static int wm8775_remove(struct i2c_client *client)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&state->hdl);
-	kfree(state);
 	return 0;
 }