Changes in Kconfig

6f963a20 - leds: trigger: Add new LED Input events trigger

Fri, 31 May 2024 13:59:10 +0000

leds: trigger: Add new LED Input events triggerAdd a new trigger which turns LEDs on when there is input(/dev/input/event*) activity and turns them back off again after there hasbeen no activity for 5 seconds.This is primarily intended to control LED devices which are a backlight forcapacitive touch-buttons, such as e.g. the menu / home / back buttons foundon the bottom bezel of many somewhat older smartphones and tablets.This can also be used to turn on the keyboard backlight LED on inputevents and turn the keyboard backlight off again when idle.Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20240531135910.168965-2-hdegoede@redhat.comSigned-off-by: Lee Jones List of files: /linux-6.15/drivers/leds/trigger/Kconfig

a24de38d - ALSA: control-led: Integrate mute led trigger

Mon, 04 Mar 2024 20:58:46 +0000

ALSA: control-led: Integrate mute led triggerThis driver is the only one calling ledtrig_audio_set(), thereforethe LED audio trigger isn't usable standalone. So it makes senseto fully integrate LED audio triger handling here.The module aliases ensure that the driver is auto-loaded (if builtas module) if a LED device has one of the two audio triggers asdefault trigger.In addition disable building the old audio mute LED trigger.Signed-off-by: Heiner Kallweit Reviewed-by: Takashi Iwai Link: https://lore.kernel.org/r/107634e6-d9ad-4a9f-881d-1eb72ea1a5a7@gmail.comSigned-off-by: Lee Jones List of files: /linux-6.15/drivers/leds/trigger/Kconfig

4a11dbf0 - leds: triggers: gpio: Rewrite to use trigger-sources

Tue, 26 Sep 2023 21:48:13 +0000

leds: triggers: gpio: Rewrite to use trigger-sourcesBy providing a GPIO line as "trigger-sources" in the FWNODE(such as from the device tree) and combining with theGPIO trigger, we can support a GPIO LED trigger in a naturalway from the hardware description instead of using thecustom sysfs and deprecated global GPIO numberspace.Example:gpio: gpio@0 { compatible "my-gpio"; gpio-controller; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; #trigger-source-cells = <2>;};leds { compatible = "gpio-leds"; led-my-gpio { label = "device:blue:myled"; gpios = <&gpio 0 GPIO_ACTIVE_HIGH>; default-state = "off"; linux,default-trigger = "gpio"; trigger-sources = <&gpio 1 GPIO_ACTIVE_HIGH>; };};Make this the norm, unmark the driver as broken.Delete the sysfs handling of GPIOs.Since GPIO descriptors inherently can describe inversion,the inversion handling can just be deleted.Signed-off-by: Linus Walleij Link: https://lore.kernel.org/r/20230926-gpio-led-trigger-dt-v2-3-e06e458b788e@linaro.orgSigned-off-by: Lee Jones List of files: /linux-6.15/drivers/leds/trigger/Kconfig

8f0adae1 - leds: Mark GPIO LED trigger broken

Tue, 14 Mar 2023 21:00:59 +0000

leds: Mark GPIO LED trigger brokenThe GPIO LED trigger exposes a userspace ABI where a usercan echo a GPIO number from the global GPIO numberspace intoa file that will trigger a certain LED when active.This is problematic because the global GPIO numberspace isinherently instable. The trigger came about at a time whensystems had one GPIO controller that defined hard-wiredGPIOs numbered 0..N and this number space was stable.We have since moved to dynamic allocation of GPIO numbersand there is no real guarantee that a GPIO number will stayconsistent even across a reboot: consider a USB attachedGPIO controller for example. Or two. Or the effect ofprobe order after adding -EPROBE_DEFER to the kernel.The trigger was added to support keypad LEDs on the Nokian810 from the GPIO event when a user slides up/down thekeypad. This is arch/arm/boot/dts/omap2420-n810.dts.A userspace script is needed to activate the trigger.This will be broken unless the script was updated recentlysince the OMAP GPIO controller now uses dynamic GPIOnumber allocations.I want to know that this trigger has active users thatcannot live without it if we are to continue to support it.Option if this is really needed: I can develop a new triggerthat can associate GPIOs with LEDs as triggers using devicetree, which should also remove the use of userspace customscripts to achieve this and be much more trustworthy, ifsomeone with the Nokia n810 or a device with a similar needis willing to test it.Suggested-by Pavel Machek Signed-off-by: Linus Walleij Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230314210059.419159-1-linus.walleij@linaro.org List of files: /linux-6.15/drivers/leds/trigger/Kconfig

97b31c1f - leds: trigger: Disable CPU trigger on PREEMPT_RT

Wed, 13 Oct 2021 09:37:19 +0000

leds: trigger: Disable CPU trigger on PREEMPT_RTThe CPU trigger is invoked on ARM from CPU-idle. That trigger laterinvokes led_trigger_event() which may invoke the callback of the actual driver.That driver can acquire a spinlock_t which is okay on kernel withoutPREEMPT_RT. On a PREEMPT_RT enabled kernel this lock is turned into asleeping lock and must not be acquired with disabled interrupts.Disable the CPU trigger on PREEMPT_RT.Signed-off-by: Sebastian Andrzej Siewior Link: https://lkml.kernel.org/r/20210924111501.m57cwwn7ahiyxxdd@linutronix.deSigned-off-by: Pavel Machek List of files: /linux-6.15/drivers/leds/trigger/Kconfig

5358680e - leds: trigger: remove reference to obsolete CONFIG_IDE_GD_ATA

Wed, 04 Aug 2021 12:34:25 +0000

leds: trigger: remove reference to obsolete CONFIG_IDE_GD_ATACommit b7fb14d3ac63 ("ide: remove the legacy ide driver") removes thedefinition of the config IDE_GD_ATA.So, remove the obsolete reference in ./drivers/leds/trigger/Kconfig.Signed-off-by: Lukas Bulwahn Signed-off-by: Pavel Machek List of files: /linux-6.15/drivers/leds/trigger/Kconfig

fd4a641a - leds: trigger: implement a tty trigger

Wed, 13 Jan 2021 17:30:18 +0000

leds: trigger: implement a tty triggerUsage is as follows: myled=ledname tty=ttyS0 echo tty > /sys/class/leds/$myled/trigger echo $tty > /sys/class/leds/$myled/ttyname. When this new trigger is active it periodically checks the tty'sstatistics and when it changed since the last check the led is flashedonce.Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20210113173018.bq2fkea2o3yp6rf6@pengutronix.deSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/leds/trigger/Kconfig

8dab9197 - docs: leds: convert to ReST

Fri, 28 Jun 2019 12:20:20 +0000

docs: leds: convert to ReSTRename the leds documentation files to ReST, add anindex for them and adjust in order to produce a nice htmloutput via the Sphinx build system.At its new index.rst, let's add a :orphan: while this is not linked tothe main index.rst file, in order to avoid build warnings.Signed-off-by: Mauro Carvalho Chehab Acked-by: Pavel Machek Signed-off-by: Jacek Anaszewski List of files: /linux-6.15/drivers/leds/trigger/Kconfig

ec8f24b7 - treewide: Add SPDX license identifier - Makefile/Kconfig

Sun, 19 May 2019 12:07:45 +0000

treewide: Add SPDX license identifier - Makefile/KconfigAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0-onlySigned-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/leds/trigger/Kconfig

faa2541f - leds: trigger: Introduce audio mute LED trigger

Mon, 26 Nov 2018 16:47:44 +0000

leds: trigger: Introduce audio mute LED triggerThis patch adds a new LED trigger for coupling the audio mixer changewith the LED on laptops or other devices. Currently there are twotrigger types, "audio-mute" and "audio-micmute".The audio driver triggers the LED brightness change vialedtrig_audio_set() call with the proper type (either mute ormic-mute). OTOH, the consumers may call ledtrig_audio_get() for theinitial brightness value that may have been set by the audio driverbeforehand.This new stuff will be used by HD-audio codec driver and some platformdrivers (thinkpad_acpi and dell-laptop, also upcoming huawei-wmi).Acked-by: Jacek Anaszewski Acked-by: Pavel Machek Acked-by: Pali Rohár Signed-off-by: Takashi Iwai List of files: /linux-6.15/drivers/leds/trigger/Kconfig

5fd752b6 - leds: core: Introduce LED pattern trigger

Thu, 11 Oct 2018 04:07:14 +0000

leds: core: Introduce LED pattern triggerThis patch adds a new LED trigger that LED device can configureto employ software or hardware pattern engine.Consumers can write 'pattern' file to enable the software patternwhich alters the brightness for the specified duration with onesoftware timer.Moreover consumers can write 'hw_pattern' file to enable the hardwarepattern for some LED controllers which can autonomously controlbrightness over time, according to some preprogrammed hardwarepatterns.Signed-off-by: Raphael Teysseyre Signed-off-by: Baolin Wang Signed-off-by: Jacek Anaszewski List of files: /linux-6.15/drivers/leds/trigger/Kconfig

3d74243d - leds: triggers: don't depend on LEDS_TRIGGERS twice

Tue, 26 Jun 2018 09:37:58 +0000

leds: triggers: don't depend on LEDS_TRIGGERS twiceAll the triggers are defined in a big if LEDS_TRIGGERS...endif block.So there is no need to let each driver depend on LEDS_TRIGGERS explicitlyonce more.Signed-off-by: Uwe Kleine-König Acked-by: Pavel Machek Signed-off-by: Jacek Anaszewski List of files: /linux-6.15/drivers/leds/trigger/Kconfig

06f502f5 - leds: trigger: Introduce a NETDEV trigger

Sun, 10 Dec 2017 21:17:55 +0000

leds: trigger: Introduce a NETDEV triggerThis commit introduces a NETDEV trigger for named deviceactivity. Available triggers are link, rx, and tx.Signed-off-by: Ben Whitten Acked-by: Pavel Machek Signed-off-by: Jacek Anaszewski List of files: /linux-6.15/drivers/leds/trigger/Kconfig

a72d3b5d - ledtrig-activity: Grammar s/a immediate/an immediate/

Thu, 30 Nov 2017 13:36:41 +0000

ledtrig-activity: Grammar s/a immediate/an immediate/Fixes: 7df4f9a9f0667ee6 ("leds: ledtrig-activity: Add a system activity LED trigger")Signed-off-by: Geert Uytterhoeven Signed-off-by: Jacek Anaszewski List of files: /linux-6.15/drivers/leds/trigger/Kconfig

7df4f9a9 - leds: ledtrig-activity: Add a system activity LED trigger

Mon, 28 Aug 2017 18:44:51 +0000

leds: ledtrig-activity: Add a system activity LED triggerThe "activity" trigger was inspired by the heartbeat one, but aims atproviding instant indication of the immediate CPU usage. Under idlecondition, it flashes 10ms every second. At 100% usage, it flashes90ms every 100ms. The blinking frequency increases from 1 to 10 Hzuntil either the load is high enough to saturate one CPU core or 50%load is reached on a single-core system. Then past this point only theduty cycle increases from 10 to 90%.This results in a very visible activity reporting allowing one toimmediately tell whether a machine is under load or not, making itquite suitable to be used in clusters.Signed-off-by: Willy Tarreau Signed-off-by: Jacek Anaszewski List of files: /linux-6.15/drivers/leds/trigger/Kconfig

eb25cb99 - leds: convert IDE trigger to common disk trigger

Fri, 10 Jun 2016 05:59:56 +0000

leds: convert IDE trigger to common disk triggerThis patch converts the IDE specific LED trigger to a generic diskactivity LED trigger. The libata core is now a trigger source justlike before the IDE disk driver. It's merely a replacement of thestring ide by disk.The patch is taken from http://dev.gentoo.org/~josejx/ata.patch and iswidely used by any ibook/powerbook owners with great satisfaction.Likewise, it is very often used successfully on different ARM platforms.Unlike the original patch, the existing 'ide-disk' trigger is stillavailable for backward compatibility. That reduce the amount of patchesin affected device trees out of the mainline kernel. For furtherdevelopment, the new name 'disk-activity' should be used.Cc: Joseph Jezak Cc: Jörg Sommer Cc: Richard Purdie Signed-off-by: Stephan Linz Signed-off-by: Jacek Anaszewski List of files: /linux-6.15/drivers/leds/trigger/Kconfig

ba93cdce - leds: triggers: Allow to switch the trigger to "panic" on a kernel panic

Thu, 28 Apr 2016 22:03:38 +0000

leds: triggers: Allow to switch the trigger to "panic" on a kernel panicThis commit adds a new led_cdev flag LED_PANIC_INDICATOR, whichallows 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 triggerto 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 List of files: /linux-6.15/drivers/leds/trigger/Kconfig

4b721174 - leds: trigger: Introduce a MTD (NAND/NOR) trigger

Tue, 12 Apr 2016 20:46:40 +0000

leds: trigger: Introduce a MTD (NAND/NOR) triggerThis commit introduces a MTD trigger for flash (NAND/NOR) deviceactivity. The implementation is copied from IDE disk.This trigger deprecates the "nand-disk" LED trigger, but for backwardscompatibility, we still keep the "nand-disk" trigger around.The motivation for deprecating the "nand-disk" LED trigger is thatit only works for NAND drivers, whereas the "mtd" LED triggeris more generic (in fact, "nand-disk" currently only works forcertain NAND drivers).Signed-off-by: Ezequiel Garcia Acked-by: Boris Brezillon Signed-off-by: Jacek Anaszewski List of files: /linux-6.15/drivers/leds/trigger/Kconfig

916fe619 - leds: trigger: Introduce a kernel panic LED trigger

Tue, 29 Mar 2016 20:35:47 +0000

leds: trigger: Introduce a kernel panic LED triggerThis commit introduces a new LED trigger which allows to configurea LED to blink on a kernel panic (through panic_blink).Notice that currently the Openmoko FreeRunner (GTA02) mach codesets panic_blink to blink a hard-coded LED. The new trigger ismeant to introduce a generic mechanism to achieve this.Signed-off-by: Ezequiel Garcia Signed-off-by: Jacek Anaszewski List of files: /linux-6.15/drivers/leds/trigger/Kconfig

82322741 - leds: Allow compile test of GPIO consumers if !GPIOLIB

Tue, 05 May 2015 16:32:25 +0000

leds: Allow compile test of GPIO consumers if !GPIOLIBThe GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB isnot enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumerfunctionality only, can still be compiled if GPIOLIB is not enabled.Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, whereappropriate.Signed-off-by: Geert Uytterhoeven Cc: Richard Purdie Cc: linux-leds@vger.kernel.orgSigned-off-by: Jacek Anaszewski List of files: /linux-6.15/drivers/leds/trigger/Kconfig