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path: root/drivers/staging/tm6000/tm6000-i2c.c
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Diffstat (limited to 'drivers/staging/tm6000/tm6000-i2c.c')
-rw-r--r--drivers/staging/tm6000/tm6000-i2c.c345
1 files changed, 0 insertions, 345 deletions
diff --git a/drivers/staging/tm6000/tm6000-i2c.c b/drivers/staging/tm6000/tm6000-i2c.c
deleted file mode 100644
index 5a651ea5f60..00000000000
--- a/drivers/staging/tm6000/tm6000-i2c.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * tm6000-i2c.c - driver for TM5600/TM6000/TM6010 USB video capture devices
- *
- * Copyright (C) 2006-2007 Mauro Carvalho Chehab <mchehab@infradead.org>
- *
- * Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
- * - Fix SMBus Read Byte command
- *
- * 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 in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/usb.h>
-#include <linux/i2c.h>
-
-#include "tm6000.h"
-#include "tm6000-regs.h"
-#include <media/v4l2-common.h>
-#include <media/tuner.h>
-#include "tuner-xc2028.h"
-
-
-/* ----------------------------------------------------------- */
-
-static unsigned int i2c_debug;
-module_param(i2c_debug, int, 0644);
-MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
-
-#define i2c_dprintk(lvl, fmt, args...) if (i2c_debug >= lvl) do { \
- printk(KERN_DEBUG "%s at %s: " fmt, \
- dev->name, __func__, ##args); } while (0)
-
-static int tm6000_i2c_send_regs(struct tm6000_core *dev, unsigned char addr,
- __u8 reg, char *buf, int len)
-{
- int rc;
- unsigned int tsleep;
- unsigned int i2c_packet_limit = 16;
-
- if (dev->dev_type == TM6010)
- i2c_packet_limit = 64;
-
- if (!buf)
- return -1;
-
- if (len < 1 || len > i2c_packet_limit) {
- printk(KERN_ERR "Incorrect length of i2c packet = %d, limit set to %d\n",
- len, i2c_packet_limit);
- return -1;
- }
-
- /* capture mutex */
- rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
- USB_RECIP_DEVICE, REQ_16_SET_GET_I2C_WR1_RDN,
- addr | reg << 8, 0, buf, len);
-
- if (rc < 0) {
- /* release mutex */
- return rc;
- }
-
- /* Calculate delay time, 14000us for 64 bytes */
- tsleep = ((len * 200) + 200 + 1000) / 1000;
- msleep(tsleep);
-
- /* release mutex */
- return rc;
-}
-
-/* Generic read - doesn't work fine with 16bit registers */
-static int tm6000_i2c_recv_regs(struct tm6000_core *dev, unsigned char addr,
- __u8 reg, char *buf, int len)
-{
- int rc;
- u8 b[2];
- unsigned int i2c_packet_limit = 16;
-
- if (dev->dev_type == TM6010)
- i2c_packet_limit = 64;
-
- if (!buf)
- return -1;
-
- if (len < 1 || len > i2c_packet_limit) {
- printk(KERN_ERR "Incorrect length of i2c packet = %d, limit set to %d\n",
- len, i2c_packet_limit);
- return -1;
- }
-
- /* capture mutex */
- if ((dev->caps.has_zl10353) && (dev->demod_addr << 1 == addr) && (reg % 2 == 0)) {
- /*
- * Workaround an I2C bug when reading from zl10353
- */
- reg -= 1;
- len += 1;
-
- rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- REQ_16_SET_GET_I2C_WR1_RDN, addr | reg << 8, 0, b, len);
-
- *buf = b[1];
- } else {
- rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- REQ_16_SET_GET_I2C_WR1_RDN, addr | reg << 8, 0, buf, len);
- }
-
- /* release mutex */
- return rc;
-}
-
-/*
- * read from a 16bit register
- * for example xc2028, xc3028 or xc3028L
- */
-static int tm6000_i2c_recv_regs16(struct tm6000_core *dev, unsigned char addr,
- __u16 reg, char *buf, int len)
-{
- int rc;
- unsigned char ureg;
-
- if (!buf || len != 2)
- return -1;
-
- /* capture mutex */
- if (dev->dev_type == TM6010) {
- ureg = reg & 0xFF;
- rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
- USB_RECIP_DEVICE, REQ_16_SET_GET_I2C_WR1_RDN,
- addr | (reg & 0xFF00), 0, &ureg, 1);
-
- if (rc < 0) {
- /* release mutex */
- return rc;
- }
-
- msleep(1400 / 1000);
- rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR |
- USB_RECIP_DEVICE, REQ_35_AFTEK_TUNER_READ,
- reg, 0, buf, len);
- } else {
- rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR |
- USB_RECIP_DEVICE, REQ_14_SET_GET_I2C_WR2_RDN,
- addr, reg, buf, len);
- }
-
- /* release mutex */
- return rc;
-}
-
-static int tm6000_i2c_xfer(struct i2c_adapter *i2c_adap,
- struct i2c_msg msgs[], int num)
-{
- struct tm6000_core *dev = i2c_adap->algo_data;
- int addr, rc, i, byte;
-
- if (num <= 0)
- return 0;
- for (i = 0; i < num; i++) {
- addr = (msgs[i].addr << 1) & 0xff;
- i2c_dprintk(2, "%s %s addr=0x%x len=%d:",
- (msgs[i].flags & I2C_M_RD) ? "read" : "write",
- i == num - 1 ? "stop" : "nonstop", addr, msgs[i].len);
- if (msgs[i].flags & I2C_M_RD) {
- /* read request without preceding register selection */
- /*
- * The TM6000 only supports a read transaction
- * immediately after a 1 or 2 byte write to select
- * a register. We cannot fulfil this request.
- */
- i2c_dprintk(2, " read without preceding write not"
- " supported");
- rc = -EOPNOTSUPP;
- goto err;
- } else if (i + 1 < num && msgs[i].len <= 2 &&
- (msgs[i + 1].flags & I2C_M_RD) &&
- msgs[i].addr == msgs[i + 1].addr) {
- /* 1 or 2 byte write followed by a read */
- if (i2c_debug >= 2)
- for (byte = 0; byte < msgs[i].len; byte++)
- printk(" %02x", msgs[i].buf[byte]);
- i2c_dprintk(2, "; joined to read %s len=%d:",
- i == num - 2 ? "stop" : "nonstop",
- msgs[i + 1].len);
-
- if (msgs[i].len == 2) {
- rc = tm6000_i2c_recv_regs16(dev, addr,
- msgs[i].buf[0] << 8 | msgs[i].buf[1],
- msgs[i + 1].buf, msgs[i + 1].len);
- } else {
- rc = tm6000_i2c_recv_regs(dev, addr, msgs[i].buf[0],
- msgs[i + 1].buf, msgs[i + 1].len);
- }
-
- i++;
-
- if (addr == dev->tuner_addr << 1) {
- tm6000_set_reg(dev, REQ_50_SET_START, 0, 0);
- tm6000_set_reg(dev, REQ_51_SET_STOP, 0, 0);
- }
- if (i2c_debug >= 2)
- for (byte = 0; byte < msgs[i].len; byte++)
- printk(" %02x", msgs[i].buf[byte]);
- } else {
- /* write bytes */
- if (i2c_debug >= 2)
- for (byte = 0; byte < msgs[i].len; byte++)
- printk(" %02x", msgs[i].buf[byte]);
- rc = tm6000_i2c_send_regs(dev, addr, msgs[i].buf[0],
- msgs[i].buf + 1, msgs[i].len - 1);
-
- if (addr == dev->tuner_addr << 1) {
- tm6000_set_reg(dev, REQ_50_SET_START, 0, 0);
- tm6000_set_reg(dev, REQ_51_SET_STOP, 0, 0);
- }
- }
- if (i2c_debug >= 2)
- printk("\n");
- if (rc < 0)
- goto err;
- }
-
- return num;
-err:
- i2c_dprintk(2, " ERROR: %i\n", rc);
- return rc;
-}
-
-static int tm6000_i2c_eeprom(struct tm6000_core *dev)
-{
- int i, rc;
- unsigned char *p = dev->eedata;
- unsigned char bytes[17];
-
- dev->i2c_client.addr = 0xa0 >> 1;
- dev->eedata_size = 0;
-
- bytes[16] = '\0';
- for (i = 0; i < sizeof(dev->eedata); ) {
- *p = i;
- rc = tm6000_i2c_recv_regs(dev, 0xa0, i, p, 1);
- if (rc < 1) {
- if (p == dev->eedata)
- goto noeeprom;
- else {
- printk(KERN_WARNING
- "%s: i2c eeprom read error (err=%d)\n",
- dev->name, rc);
- }
- return -EINVAL;
- }
- dev->eedata_size++;
- p++;
- if (0 == (i % 16))
- printk(KERN_INFO "%s: i2c eeprom %02x:", dev->name, i);
- printk(" %02x", dev->eedata[i]);
- if ((dev->eedata[i] >= ' ') && (dev->eedata[i] <= 'z'))
- bytes[i%16] = dev->eedata[i];
- else
- bytes[i%16] = '.';
-
- i++;
-
- if (0 == (i % 16)) {
- bytes[16] = '\0';
- printk(" %s\n", bytes);
- }
- }
- if (0 != (i%16)) {
- bytes[i%16] = '\0';
- for (i %= 16; i < 16; i++)
- printk(" ");
- printk(" %s\n", bytes);
- }
-
- return 0;
-
-noeeprom:
- printk(KERN_INFO "%s: Huh, no eeprom present (err=%d)?\n",
- dev->name, rc);
- return -EINVAL;
-}
-
-/* ----------------------------------------------------------- */
-
-/*
- * functionality()
- */
-static u32 functionality(struct i2c_adapter *adap)
-{
- return I2C_FUNC_SMBUS_EMUL;
-}
-
-static const struct i2c_algorithm tm6000_algo = {
- .master_xfer = tm6000_i2c_xfer,
- .functionality = functionality,
-};
-
-/* ----------------------------------------------------------- */
-
-/*
- * tm6000_i2c_register()
- * register i2c bus
- */
-int tm6000_i2c_register(struct tm6000_core *dev)
-{
- int rc;
-
- dev->i2c_adap.owner = THIS_MODULE;
- dev->i2c_adap.algo = &tm6000_algo;
- dev->i2c_adap.dev.parent = &dev->udev->dev;
- strlcpy(dev->i2c_adap.name, dev->name, sizeof(dev->i2c_adap.name));
- dev->i2c_adap.algo_data = dev;
- i2c_set_adapdata(&dev->i2c_adap, &dev->v4l2_dev);
- rc = i2c_add_adapter(&dev->i2c_adap);
- if (rc)
- return rc;
-
- dev->i2c_client.adapter = &dev->i2c_adap;
- strlcpy(dev->i2c_client.name, "tm6000 internal", I2C_NAME_SIZE);
- tm6000_i2c_eeprom(dev);
-
- return 0;
-}
-
-/*
- * tm6000_i2c_unregister()
- * unregister i2c_bus
- */
-int tm6000_i2c_unregister(struct tm6000_core *dev)
-{
- i2c_del_adapter(&dev->i2c_adap);
- return 0;
-}
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