diff options
author | Stephen Rothwell <sfr@canb.auug.org.au> | 2015-07-24 13:18:20 +1000 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2015-07-24 13:18:20 +1000 |
commit | 4226e35408d80bf3de9117b96432b28f4b8801c1 (patch) | |
tree | 817d5214c9af9c413509b21a4a891a1b27a37000 | |
parent | 040295937ace0446320314bb14672ce35b91b965 (diff) | |
parent | efbc61308e23bd3cbbec8ef33262969abbb1d958 (diff) |
Merge remote-tracking branch 'leds/for-next'
-rw-r--r-- | Documentation/devicetree/bindings/leds/common.txt | 27 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/leds/leds-ns2.txt | 9 | ||||
-rw-r--r-- | drivers/leds/Kconfig | 19 | ||||
-rw-r--r-- | drivers/leds/leds-lm3530.c | 1 | ||||
-rw-r--r-- | drivers/leds/leds-lm355x.c | 1 | ||||
-rw-r--r-- | drivers/leds/leds-lm3642.c | 1 | ||||
-rw-r--r-- | drivers/leds/leds-lp8860.c | 4 | ||||
-rw-r--r-- | drivers/leds/leds-ns2.c | 169 | ||||
-rw-r--r-- | drivers/leds/leds-pca955x.c | 1 | ||||
-rw-r--r-- | drivers/leds/leds-pca963x.c | 1 | ||||
-rw-r--r-- | drivers/leds/leds-tca6507.c | 1 | ||||
-rw-r--r-- | drivers/leds/trigger/Kconfig | 2 | ||||
-rw-r--r-- | include/dt-bindings/leds/leds-ns2.h | 8 | ||||
-rw-r--r-- | include/linux/platform_data/leds-kirkwood-ns2.h | 14 |
14 files changed, 165 insertions, 93 deletions
diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt index 747c53805eec..68419843e32f 100644 --- a/Documentation/devicetree/bindings/leds/common.txt +++ b/Documentation/devicetree/bindings/leds/common.txt @@ -29,14 +29,23 @@ Optional properties for child nodes: "ide-disk" - LED indicates disk activity "timer" - LED flashes at a fixed, configurable rate -- max-microamp : maximum intensity in microamperes of the LED - (torch LED for flash devices) -- flash-max-microamp : maximum intensity in microamperes of the - flash LED; it is mandatory if the LED should - support the flash mode -- flash-timeout-us : timeout in microseconds after which the flash - LED is turned off +- led-max-microamp : Maximum LED supply current in microamperes. This property + can be made mandatory for the board configurations + introducing a risk of hardware damage in case an excessive + current is set. + For flash LED controllers with configurable current this + property is mandatory for the LEDs in the non-flash modes + (e.g. torch or indicator). +Required properties for flash LED child nodes: +- flash-max-microamp : Maximum flash LED supply current in microamperes. +- flash-max-timeout-us : Maximum timeout in microseconds after which the flash + LED is turned off. + +For controllers that have no configurable current the flash-max-microamp +property can be omitted. +For controllers that have no configurable timeout the flash-max-timeout-us +property can be omitted. Examples: @@ -49,7 +58,7 @@ system-status { camera-flash { label = "Flash"; led-sources = <0>, <1>; - max-microamp = <50000>; + led-max-microamp = <50000>; flash-max-microamp = <320000>; - flash-timeout-us = <500000>; + flash-max-timeout-us = <500000>; }; diff --git a/Documentation/devicetree/bindings/leds/leds-ns2.txt b/Documentation/devicetree/bindings/leds/leds-ns2.txt index aef3aca34d2d..9f81258a5b6e 100644 --- a/Documentation/devicetree/bindings/leds/leds-ns2.txt +++ b/Documentation/devicetree/bindings/leds/leds-ns2.txt @@ -8,6 +8,9 @@ Each LED is represented as a sub-node of the ns2-leds device. Required sub-node properties: - cmd-gpio: Command LED GPIO. See OF device-tree GPIO specification. - slow-gpio: Slow LED GPIO. See OF device-tree GPIO specification. +- modes-map: A mapping between LED modes (off, on or SATA activity blinking) and + the corresponding cmd-gpio/slow-gpio values. All the GPIO values combinations + should be given in order to avoid having an unknown mode at driver probe time. Optional sub-node properties: - label: Name for this LED. If omitted, the label is taken from the node name. @@ -15,6 +18,8 @@ Optional sub-node properties: Example: +#include <dt-bindings/leds/leds-ns2.h> + ns2-leds { compatible = "lacie,ns2-leds"; @@ -22,5 +27,9 @@ ns2-leds { label = "ns2:blue:sata"; slow-gpio = <&gpio0 29 0>; cmd-gpio = <&gpio0 30 0>; + modes-map = <NS_V2_LED_OFF 0 1 + NS_V2_LED_ON 1 0 + NS_V2_LED_ON 0 0 + NS_V2_LED_SATA 1 1>; }; }; diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 9ad35f72ab4c..23408bd68fdc 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -43,7 +43,7 @@ config LEDS_AAT1290 tristate "LED support for the AAT1290" depends on LEDS_CLASS_FLASH depends on V4L2_FLASH_LED_CLASS || !V4L2_FLASH_LED_CLASS - depends on GPIOLIB + depends on GPIOLIB || COMPILE_TEST depends on OF depends on PINCTRL help @@ -419,7 +419,7 @@ config LEDS_INTEL_SS4200 config LEDS_LT3593 tristate "LED driver for LT3593 controllers" depends on LEDS_CLASS - depends on GPIOLIB + depends on GPIOLIB || COMPILE_TEST help This option enables support for LEDs driven by a Linear Technology LT3593 controller. This controller uses a special one-wire pulse @@ -455,12 +455,16 @@ config LEDS_MC13783 config LEDS_NS2 tristate "LED support for Network Space v2 GPIO LEDs" depends on LEDS_CLASS - depends on MACH_KIRKWOOD + depends on MACH_KIRKWOOD || MACH_ARMADA_370 default y help - This option enable support for the dual-GPIO LED found on the - Network Space v2 board (and parents). This include Internet Space v2, - Network Space (Max) v2 and d2 Network v2 boards. + This option enables support for the dual-GPIO LEDs found on the + following LaCie/Seagate boards: + + Network Space v2 (and parents: Max, Mini) + Internet Space v2 + d2 Network v2 + n090401 (Seagate NAS 4-Bay) config LEDS_NETXBIG tristate "LED support for Big Network series LEDs" @@ -543,7 +547,8 @@ config LEDS_MENF21BMC config LEDS_KTD2692 tristate "LED support for KTD2692 flash LED controller" - depends on LEDS_CLASS_FLASH && GPIOLIB && OF + depends on LEDS_CLASS_FLASH && OF + depends on GPIOLIB || COMPILE_TEST help This option enables support for KTD2692 LED flash connected through ExpressWire interface. diff --git a/drivers/leds/leds-lm3530.c b/drivers/leds/leds-lm3530.c index 91325de3cd33..b38430cb10ad 100644 --- a/drivers/leds/leds-lm3530.c +++ b/drivers/leds/leds-lm3530.c @@ -492,7 +492,6 @@ static struct i2c_driver lm3530_i2c_driver = { .id_table = lm3530_id, .driver = { .name = LM3530_NAME, - .owner = THIS_MODULE, }, }; diff --git a/drivers/leds/leds-lm355x.c b/drivers/leds/leds-lm355x.c index f5112cb2d991..48872997d6b4 100644 --- a/drivers/leds/leds-lm355x.c +++ b/drivers/leds/leds-lm355x.c @@ -555,7 +555,6 @@ MODULE_DEVICE_TABLE(i2c, lm355x_id); static struct i2c_driver lm355x_i2c_driver = { .driver = { .name = LM355x_NAME, - .owner = THIS_MODULE, .pm = NULL, }, .probe = lm355x_probe, diff --git a/drivers/leds/leds-lm3642.c b/drivers/leds/leds-lm3642.c index d3dec0132769..02ebe342f5af 100644 --- a/drivers/leds/leds-lm3642.c +++ b/drivers/leds/leds-lm3642.c @@ -446,7 +446,6 @@ MODULE_DEVICE_TABLE(i2c, lm3642_id); static struct i2c_driver lm3642_i2c_driver = { .driver = { .name = LM3642_NAME, - .owner = THIS_MODULE, .pm = NULL, }, .probe = lm3642_probe, diff --git a/drivers/leds/leds-lp8860.c b/drivers/leds/leds-lp8860.c index 8c2b7fbe2392..79f084354e67 100644 --- a/drivers/leds/leds-lp8860.c +++ b/drivers/leds/leds-lp8860.c @@ -302,7 +302,7 @@ out: return ret; } -static struct reg_default lp8860_reg_defs[] = { +static const struct reg_default lp8860_reg_defs[] = { { LP8860_DISP_CL1_BRT_MSB, 0x00}, { LP8860_DISP_CL1_BRT_LSB, 0x00}, { LP8860_DISP_CL1_CURR_MSB, 0x00}, @@ -332,7 +332,7 @@ static const struct regmap_config lp8860_regmap_config = { .cache_type = REGCACHE_NONE, }; -static struct reg_default lp8860_eeprom_defs[] = { +static const struct reg_default lp8860_eeprom_defs[] = { { LP8860_EEPROM_REG_0, 0x00 }, { LP8860_EEPROM_REG_1, 0x00 }, { LP8860_EEPROM_REG_2, 0x00 }, diff --git a/drivers/leds/leds-ns2.c b/drivers/leds/leds-ns2.c index 1fd6adbb43b7..b33514d9f427 100644 --- a/drivers/leds/leds-ns2.c +++ b/drivers/leds/leds-ns2.c @@ -31,50 +31,38 @@ #include <linux/platform_data/leds-kirkwood-ns2.h> #include <linux/of.h> #include <linux/of_gpio.h> +#include "leds.h" /* - * The Network Space v2 dual-GPIO LED is wired to a CPLD and can blink in - * relation with the SATA activity. This capability is exposed through the - * "sata" sysfs attribute. - * - * The following array detail the different LED registers and the combination - * of their possible values: - * - * cmd_led | slow_led | /SATA active | LED state - * | | | - * 1 | 0 | x | off - * - | 1 | x | on - * 0 | 0 | 1 | on - * 0 | 0 | 0 | blink (rate 300ms) + * The Network Space v2 dual-GPIO LED is wired to a CPLD. Three different LED + * modes are available: off, on and SATA activity blinking. The LED modes are + * controlled through two GPIOs (command and slow): each combination of values + * for the command/slow GPIOs corresponds to a LED mode. */ -enum ns2_led_modes { - NS_V2_LED_OFF, - NS_V2_LED_ON, - NS_V2_LED_SATA, -}; - -struct ns2_led_mode_value { - enum ns2_led_modes mode; - int cmd_level; - int slow_level; -}; - -static struct ns2_led_mode_value ns2_led_modval[] = { - { NS_V2_LED_OFF , 1, 0 }, - { NS_V2_LED_ON , 0, 1 }, - { NS_V2_LED_ON , 1, 1 }, - { NS_V2_LED_SATA, 0, 0 }, -}; - struct ns2_led_data { struct led_classdev cdev; unsigned cmd; unsigned slow; + bool can_sleep; + int mode_index; unsigned char sata; /* True when SATA mode active. */ rwlock_t rw_lock; /* Lock GPIOs. */ + struct work_struct work; + int num_modes; + struct ns2_led_modval *modval; }; +static void ns2_led_work(struct work_struct *work) +{ + struct ns2_led_data *led_dat = + container_of(work, struct ns2_led_data, work); + int i = led_dat->mode_index; + + gpio_set_value_cansleep(led_dat->cmd, led_dat->modval[i].cmd_level); + gpio_set_value_cansleep(led_dat->slow, led_dat->modval[i].slow_level); +} + static int ns2_led_get_mode(struct ns2_led_data *led_dat, enum ns2_led_modes *mode) { @@ -83,22 +71,18 @@ static int ns2_led_get_mode(struct ns2_led_data *led_dat, int cmd_level; int slow_level; - read_lock_irq(&led_dat->rw_lock); + cmd_level = gpio_get_value_cansleep(led_dat->cmd); + slow_level = gpio_get_value_cansleep(led_dat->slow); - cmd_level = gpio_get_value(led_dat->cmd); - slow_level = gpio_get_value(led_dat->slow); - - for (i = 0; i < ARRAY_SIZE(ns2_led_modval); i++) { - if (cmd_level == ns2_led_modval[i].cmd_level && - slow_level == ns2_led_modval[i].slow_level) { - *mode = ns2_led_modval[i].mode; + for (i = 0; i < led_dat->num_modes; i++) { + if (cmd_level == led_dat->modval[i].cmd_level && + slow_level == led_dat->modval[i].slow_level) { + *mode = led_dat->modval[i].mode; ret = 0; break; } } - read_unlock_irq(&led_dat->rw_lock); - return ret; } @@ -106,19 +90,32 @@ static void ns2_led_set_mode(struct ns2_led_data *led_dat, enum ns2_led_modes mode) { int i; + bool found = false; unsigned long flags; + for (i = 0; i < led_dat->num_modes; i++) + if (mode == led_dat->modval[i].mode) { + found = true; + break; + } + + if (!found) + return; + write_lock_irqsave(&led_dat->rw_lock, flags); - for (i = 0; i < ARRAY_SIZE(ns2_led_modval); i++) { - if (mode == ns2_led_modval[i].mode) { - gpio_set_value(led_dat->cmd, - ns2_led_modval[i].cmd_level); - gpio_set_value(led_dat->slow, - ns2_led_modval[i].slow_level); - } + if (!led_dat->can_sleep) { + gpio_set_value(led_dat->cmd, + led_dat->modval[i].cmd_level); + gpio_set_value(led_dat->slow, + led_dat->modval[i].slow_level); + goto exit_unlock; } + led_dat->mode_index = i; + schedule_work(&led_dat->work); + +exit_unlock: write_unlock_irqrestore(&led_dat->rw_lock, flags); } @@ -148,7 +145,6 @@ static ssize_t ns2_led_sata_store(struct device *dev, container_of(led_cdev, struct ns2_led_data, cdev); int ret; unsigned long enable; - enum ns2_led_modes mode; ret = kstrtoul(buff, 10, &enable); if (ret < 0) @@ -157,19 +153,19 @@ static ssize_t ns2_led_sata_store(struct device *dev, enable = !!enable; if (led_dat->sata == enable) - return count; + goto exit; - ret = ns2_led_get_mode(led_dat, &mode); - if (ret < 0) - return ret; + led_dat->sata = enable; + + if (!led_get_brightness(led_cdev)) + goto exit; - if (enable && mode == NS_V2_LED_ON) + if (enable) ns2_led_set_mode(led_dat, NS_V2_LED_SATA); - if (!enable && mode == NS_V2_LED_SATA) + else ns2_led_set_mode(led_dat, NS_V2_LED_ON); - led_dat->sata = enable; - +exit: return count; } @@ -199,7 +195,7 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat, enum ns2_led_modes mode; ret = devm_gpio_request_one(&pdev->dev, template->cmd, - gpio_get_value(template->cmd) ? + gpio_get_value_cansleep(template->cmd) ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, template->name); if (ret) { @@ -209,7 +205,7 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat, } ret = devm_gpio_request_one(&pdev->dev, template->slow, - gpio_get_value(template->slow) ? + gpio_get_value_cansleep(template->slow) ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, template->name); if (ret) { @@ -228,6 +224,10 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat, led_dat->cdev.groups = ns2_led_groups; led_dat->cmd = template->cmd; led_dat->slow = template->slow; + led_dat->can_sleep = gpio_cansleep(led_dat->cmd) | + gpio_cansleep(led_dat->slow); + led_dat->modval = template->modval; + led_dat->num_modes = template->num_modes; ret = ns2_led_get_mode(led_dat, &mode); if (ret < 0) @@ -238,6 +238,8 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat, led_dat->cdev.brightness = (mode == NS_V2_LED_OFF) ? LED_OFF : LED_FULL; + INIT_WORK(&led_dat->work, ns2_led_work); + ret = led_classdev_register(&pdev->dev, &led_dat->cdev); if (ret < 0) return ret; @@ -248,6 +250,7 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat, static void delete_ns2_led(struct ns2_led_data *led_dat) { led_classdev_unregister(&led_dat->cdev); + cancel_work_sync(&led_dat->work); } #ifdef CONFIG_OF_GPIO @@ -259,9 +262,8 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata) { struct device_node *np = dev->of_node; struct device_node *child; - struct ns2_led *leds; + struct ns2_led *led, *leds; int num_leds = 0; - int i = 0; num_leds = of_get_child_count(np); if (!num_leds) @@ -272,26 +274,57 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata) if (!leds) return -ENOMEM; + led = leds; for_each_child_of_node(np, child) { const char *string; - int ret; + int ret, i, num_modes; + struct ns2_led_modval *modval; ret = of_get_named_gpio(child, "cmd-gpio", 0); if (ret < 0) return ret; - leds[i].cmd = ret; + led->cmd = ret; ret = of_get_named_gpio(child, "slow-gpio", 0); if (ret < 0) return ret; - leds[i].slow = ret; + led->slow = ret; ret = of_property_read_string(child, "label", &string); - leds[i].name = (ret == 0) ? string : child->name; + led->name = (ret == 0) ? string : child->name; ret = of_property_read_string(child, "linux,default-trigger", &string); if (ret == 0) - leds[i].default_trigger = string; + led->default_trigger = string; + + ret = of_property_count_u32_elems(child, "modes-map"); + if (ret < 0 || ret % 3) { + dev_err(dev, + "Missing or malformed modes-map property\n"); + return -EINVAL; + } + + num_modes = ret / 3; + modval = devm_kzalloc(dev, + num_modes * sizeof(struct ns2_led_modval), + GFP_KERNEL); + if (!modval) + return -ENOMEM; + + for (i = 0; i < num_modes; i++) { + of_property_read_u32_index(child, + "modes-map", 3 * i, + (u32 *) &modval[i].mode); + of_property_read_u32_index(child, + "modes-map", 3 * i + 1, + (u32 *) &modval[i].cmd_level); + of_property_read_u32_index(child, + "modes-map", 3 * i + 2, + (u32 *) &modval[i].slow_level); + } + + led->num_modes = num_modes; + led->modval = modval; - i++; + led++; } pdata->leds = leds; diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c index c3a08b60535b..b775e1efecd3 100644 --- a/drivers/leds/leds-pca955x.c +++ b/drivers/leds/leds-pca955x.c @@ -379,7 +379,6 @@ static int pca955x_remove(struct i2c_client *client) static struct i2c_driver pca955x_driver = { .driver = { .name = "leds-pca955x", - .owner = THIS_MODULE, }, .probe = pca955x_probe, .remove = pca955x_remove, diff --git a/drivers/leds/leds-pca963x.c b/drivers/leds/leds-pca963x.c index bee3e1ab27fd..3f63a1bfdc4f 100644 --- a/drivers/leds/leds-pca963x.c +++ b/drivers/leds/leds-pca963x.c @@ -458,7 +458,6 @@ static int pca963x_remove(struct i2c_client *client) static struct i2c_driver pca963x_driver = { .driver = { .name = "leds-pca963x", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(of_pca963x_match), }, .probe = pca963x_probe, diff --git a/drivers/leds/leds-tca6507.c b/drivers/leds/leds-tca6507.c index 20fa8e77f186..c1f910981781 100644 --- a/drivers/leds/leds-tca6507.c +++ b/drivers/leds/leds-tca6507.c @@ -830,7 +830,6 @@ static int tca6507_remove(struct i2c_client *client) static struct i2c_driver tca6507_driver = { .driver = { .name = "leds-tca6507", - .owner = THIS_MODULE, .of_match_table = of_match_ptr(of_tca6507_leds_match), }, .probe = tca6507_probe, diff --git a/drivers/leds/trigger/Kconfig b/drivers/leds/trigger/Kconfig index 49794b47b51c..5bda6a9b56bb 100644 --- a/drivers/leds/trigger/Kconfig +++ b/drivers/leds/trigger/Kconfig @@ -72,7 +72,7 @@ config LEDS_TRIGGER_CPU config LEDS_TRIGGER_GPIO tristate "LED GPIO Trigger" depends on LEDS_TRIGGERS - depends on GPIOLIB + depends on GPIOLIB || COMPILE_TEST help This allows LEDs to be controlled by gpio events. It's good when using gpios as switches and triggering the needed LEDs diff --git a/include/dt-bindings/leds/leds-ns2.h b/include/dt-bindings/leds/leds-ns2.h new file mode 100644 index 000000000000..491c5f974a92 --- /dev/null +++ b/include/dt-bindings/leds/leds-ns2.h @@ -0,0 +1,8 @@ +#ifndef _DT_BINDINGS_LEDS_NS2_H +#define _DT_BINDINGS_LEDS_NS2_H + +#define NS_V2_LED_OFF 0 +#define NS_V2_LED_ON 1 +#define NS_V2_LED_SATA 2 + +#endif diff --git a/include/linux/platform_data/leds-kirkwood-ns2.h b/include/linux/platform_data/leds-kirkwood-ns2.h index 6a9fed57f346..eb8a6860e816 100644 --- a/include/linux/platform_data/leds-kirkwood-ns2.h +++ b/include/linux/platform_data/leds-kirkwood-ns2.h @@ -9,11 +9,25 @@ #ifndef __LEDS_KIRKWOOD_NS2_H #define __LEDS_KIRKWOOD_NS2_H +enum ns2_led_modes { + NS_V2_LED_OFF, + NS_V2_LED_ON, + NS_V2_LED_SATA, +}; + +struct ns2_led_modval { + enum ns2_led_modes mode; + int cmd_level; + int slow_level; +}; + struct ns2_led { const char *name; const char *default_trigger; unsigned cmd; unsigned slow; + int num_modes; + struct ns2_led_modval *modval; }; struct ns2_led_platform_data { |