linux/drivers/leds/trigger, branch v4.5

leds: ledtrig-ide-disk: Make the driver explicitly non-modular

2016-01-04T08:57:39Z

The Kconfig for this driver is currently: config LEDS_TRIGGER_IDE_DISK bool "LED IDE Disk Trigger" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since module_init translates to device_initcall in the non-modular case, the init ordering remains unchanged with this commit. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Cc: Bryan Wu Cc: Richard Purdie Cc: linux-leds@vger.kernel.org Signed-off-by: Paul Gortmaker Signed-off-by: Jacek Anaszewski

leds: ledtrig-cpu: Make the driver explicitly non-modular

2016-01-04T08:57:39Z

The Kconfig for this driver is currently: config LEDS_TRIGGER_CPU bool "LED CPU Trigger" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since module_init translates to device_initcall in the non-modular case, the init ordering remains unchanged with this commit. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Cc: Bryan Wu Cc: Richard Purdie Cc: linux-leds@vger.kernel.org Signed-off-by: Paul Gortmaker Acked-by: Linus Walleij Signed-off-by: Jacek Anaszewski

leds: triggers: oneshot: fix module license specification

2016-01-04T08:57:36Z

The header of this file fixes the license to GPL 2 only without the option to use later version. So use the string "GPL v2" that is to be used in this case. Signed-off-by: Uwe Kleine-König Acked-by: Fabio Baltieri Signed-off-by: Jacek Anaszewski

leds: ledtrig-transient: fix duration to be msec instead of jiffies

2016-01-04T08:57:36Z

The transient trigger duration is documented to be in msec units, but is actually in jiffies units. Other time based triggers are in msec units as well. Fix the timer setup to convert from msec. This could break an existing userspace that worked around this problem, but exposing jiffies to userspace is just wrong and would break anyway if HZ is changed. Signed-off-by: Rob Herring Cc: Shuah Khan Cc: Richard Purdie Cc: linux-leds@vger.kernel.org Signed-off-by: Jacek Anaszewski

leds: core: Add led_set_brightness_nosleep{nopm} functions

2016-01-04T08:57:30Z

This patch adds led_set_brightness_nosleep() and led_set_brightness_nopm() functions, that guarantee setting LED brightness in a non-blocking way. The latter is used from pm_ops context and doesn't modify the brightness cached in the struct led_classdev. Its execution always ends up with a call to brightness setting op - either directly or through a set_brightness_work, regardless of LED_SUSPENDED flag state. The patch also replaces led_set_brightness_async() with led_set_brightness_nosleep() in all places where the most vital was setting brightness in a non sleeping way but not necessarily asynchronously, which is not needed for non-blocking drivers. Signed-off-by: Jacek Anaszewski Acked-by: Sakari Ailus

leds: triggers: add invert to heartbeat

2015-11-03T07:59:23Z

This patch adds possibility to invert heartbeat blinking. The inverted LED is more time ON then OFF. It's because it looks better when the heartbeat LED is next to other LED which is most time ON. The invert value is exported same way via sysfs in file invert like oneshot. I get inspiration from this trigger. Signed-off-by: Jiri Prchal Signed-off-by: Jacek Anaszewski

leds: Allow compile test of GPIO consumers if !GPIOLIB

2015-08-28T12:05:57Z

The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer functionality only, can still be compiled if GPIOLIB is not enabled. Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where appropriate. Signed-off-by: Geert Uytterhoeven Cc: Richard Purdie Cc: linux-leds@vger.kernel.org Signed-off-by: Jacek Anaszewski

leds: Add support for setting brightness in a synchronous way

2014-11-14T22:29:35Z

There are use cases when setting a LED brightness has to have immediate effect (e.g. setting a torch LED brightness). This patch extends LED subsystem to support such operations. The LED subsystem internal API __led_set_brightness is changed to led_set_brightness_async and new led_set_brightness_sync API is added. Signed-off-by: Jacek Anaszewski Acked-by: Kyungmin Park Cc: Richard Purdie Signed-off-by: Bryan Wu

leds: trigger: gpio: fix warning in gpio trigger for gpios whose accessor function may sleep

2014-09-11T23:57:51Z

When using a GPIO driver whose accessor functions may sleep (e.g. an I2C GPIO extender like PCA9554) the following warning is issued: WARNING: CPU: 0 PID: 665 at drivers/gpio/gpiolib.c:2274 gpiod_get_raw_value+0x3c/0x48() Modules linked in: CPU: 0 PID: 665 Comm: kworker/0:2 Not tainted 3.16.0-karo+ #115 Workqueue: events gpio_trig_work [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (warn_slowpath_common+0x64/0x84) [] (warn_slowpath_common) from [] (warn_slowpath_null+0x1c/0x24) [] (warn_slowpath_null) from [] (gpiod_get_raw_value+0x3c/0x48) [] (gpiod_get_raw_value) from [] (gpio_trig_work+0x1c/0xb0) [] (gpio_trig_work) from [] (process_one_work+0x144/0x38c) [] (process_one_work) from [] (worker_thread+0x60/0x5cc) [] (worker_thread) from [] (kthread+0xb4/0xd0) [] (kthread) from [] (ret_from_fork+0x14/0x24) ---[ end trace cd51a1dad8b86c9c ]--- Fix this by using the _cansleep() variant of gpio_get_value(). Signed-off-by: Lothar Waßmann Signed-off-by: Bryan Wu

drivers/leds: Replace __get_cpu_var use through this_cpu_ptr

2014-05-08T06:28:08Z

Use this_cpu_ptr for the address calculation instead of __get_cpu_var. Signed-off-by: Christoph Lameter Signed-off-by: Bryan Wu