linux/drivers/leds/trigger, branch v4.7

leds: handle suspend/resume in heartbeat trigger

2016-06-08T09:47:06Z

The following phenomena was observed: when suspending the system, sometimes the heartbeat LED was left on, glowing and wasting power while the rest of the system is asleep, also disturbing power dissapation measures on the odd suspend cycle when it's left on. Clearly this is not how we want the heartbeat trigger to work: it should turn off and leave the LED off during system suspend. This removes the heartbeat trigger when preparing suspend and restores it during resume. The trigger code will make sure all LEDs are left in OFF state after removing the trigger, and will re-enable the trigger on all LEDs after resuming. Cc: linux-pm@vger.kernel.org Signed-off-by: Linus Walleij Reviewed-by: Ulf Hansson Signed-off-by: Jacek Anaszewski

leds: triggers: Allow to switch the trigger to "panic" on a kernel panic

2016-05-06T08:22:09Z

This commit adds a new led_cdev flag LED_PANIC_INDICATOR, which allows to mark a specific LED to be switched to the "panic" trigger, on a kernel panic. This is useful to allow the user to assign a regular trigger to a given LED, and still blink that LED on a kernel panic. Signed-off-by: Ezequiel Garcia Reviewed-by: Matthias Brugger Acked-by: Pavel Machek Signed-off-by: Jacek Anaszewski

leds: ledtrig-ide-disk: Move ide_blink_delay to ledtrig_ide_activity()

2016-04-19T06:57:16Z

Parameters delay_on and delay_off of led_trigger_blink_oneshot() are pointers, to enable blink interval adjustment by LED class drivers of the controllers that implement hardware blinking. Move ide_blink_delay variable to ledtrig_ide_activity() in order to prevent the situation when adjustment committed by one LED class driver influences blink interval of the software fallback blink feature, that is applied to the drivers that don't implement blink_set op. Reviewed-by: Boris Brezillon Signed-off-by: Jacek Anaszewski

leds: trigger: Introduce a MTD (NAND/NOR) trigger

2016-04-13T08:23:14Z

This commit introduces a MTD trigger for flash (NAND/NOR) device activity. The implementation is copied from IDE disk. This trigger deprecates the "nand-disk" LED trigger, but for backwards compatibility, we still keep the "nand-disk" trigger around. The motivation for deprecating the "nand-disk" LED trigger is that it only works for NAND drivers, whereas the "mtd" LED trigger is more generic (in fact, "nand-disk" currently only works for certain NAND drivers). Signed-off-by: Ezequiel Garcia Acked-by: Boris Brezillon Signed-off-by: Jacek Anaszewski

leds: trigger: Introduce a kernel panic LED trigger

2016-03-30T09:16:39Z

This commit introduces a new LED trigger which allows to configure a LED to blink on a kernel panic (through panic_blink). Notice that currently the Openmoko FreeRunner (GTA02) mach code sets panic_blink to blink a hard-coded LED. The new trigger is meant to introduce a generic mechanism to achieve this. Signed-off-by: Ezequiel Garcia Signed-off-by: Jacek Anaszewski

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