kernel/linux.git/Documentation/leds, branch v6.19.11

leds: lp55xx_common: Enable use without FW_LOADER_USER_HELPER

2025-10-21T09:46:30+00:00

Many distributions disable FW_LOADER_USER_HELPER, and this configuration makes lp55xx LEDs completely unusable. Enable their use by only implying the user helper, since the basic LEDs and the hardware patterns can be used with only the sysfs interface. Tested on Nokia N900 with LP5523. Additionally do not refer to the sysfs interface as legacy anymore, since it might be the only one available to users. Signed-off-by: Sicelo A. Mhlongo Signed-off-by: Lee Jones

Merge tag 'leds-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds

2025-06-03T19:10:31+00:00

Pull LED updates from Lee Jones: "LED Triggers: - Allow writing "default" to the sysfs 'trigger' attribute to set an LED to its default trigger - If the default trigger is "none", writing "default" will remove the current trigger - Updated sysfs ABI documentation for the new "default" trigger functionality LED KUnit Testing: - Provide a skeleton KUnit test suite for the LEDs framework - Expand the LED class device registration KUnit test to cover more scenarios, including 'brightness_get' behavior - Add KUnit tests for the LED lookup and get API ('led_add_lookup', 'devm_led_get') LED Flash Class: - Add support for setting flash/strobe duration through a new 'duration_set' op and 'led_set_flash_duration()' function, aligning with 'V4L2_CID_FLASH_DURATION' Texas Instruments TPS6131x: - Add a new driver for the TPS61310/TPS61311 flash LED controllers - The driver supports the device's three constant-current sinks for flash and torch modes LED Core: - Prevent potential 'snprintf()' truncations in LED names by checking for buffer overflows ChromeOS EC LEDs: - Avoid a -Wflex-array-member-not-at-end GCC warning by replacing an on-stack flexible structure definition with a utility function call Multicolor LEDs: - Fix issue where setting multi_intensity while software blinking is active could stop blinking PCA955x LEDs: - Avoid potential buffer overflow when creating default labels by changing a field's type to 'u8' and updating format specifiers PCA995x LEDs: - Fix a typo (stray space) in an 'of_device_id' entry in the 'pca995x_of_match' table Kconfig: - Prevent LED drivers from being enabled by default when 'COMPILE_TEST' is set Device Property API: - Split 'device_get_child_node_count()' into a new helper 'fwnode_get_child_node_count()' that doesn't require a device struct, making the API more symmetrical Driver Modernization (using 'fwnode_get_child_node_count()'): - Update 'leds-pwm-multicolor', 'leds-ncp5623' and 'leds-ncp5623' to use the new 'fwnode_get_child_node_count()' helper, removing their custom implementation - As above in the USB Type-C TCPM driver Driver Modernization (using new GPIO setter callbacks): - Convert 'leds-lgm-sso' to use new GPIO line value setter callbacks which return an integer for error handling - Convert 'leds-pca955x', 'leds-pca9532' and 'leds-tca6507' to use new GPIO setter callbacks Documentation: - Remove the '.rst' extension for 'leds-st1202' in the documentation index for consistency LP8860 LEDs: - Use 'regmap_multi_reg_write()' for EEPROM writes instead of manual looping - Use scoped mutex guards and 'devm_mutex_init()' to simplify function exits and ensure automatic cleanup - Remove default register definitions that are unused when regmap caching is not active - Use 'devm_regulator_get_enable_optional()' to handle the optional regulator, simplifying enabling and removing manual disabling - Refactor 'lp8860_unlock_eeprom()' to only perform the unlock operation, removing the lock part and an unnecessary parameter - Use a 'devm' action to disable the enable-GPIO, simplifying cleanup and error paths, and remove the now-empty '.remove()' function Turris Omnia LEDs: - Drop unnecessary commas in terminator entries of 'struct attribute' and 'struct of_device_id' arrays MT6370 RGB LEDs: - Use the 'LINEAR_RANGE()' for defining 'struct linear_range' entries to improve robustness Texas Instruments TPS6131x: - Add new devicetree bindings for the TI TPS61310/TPS61311 flash LED driver" * tag 'leds-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (31 commits) leds: tps6131x: Add support for Texas Instruments TPS6131X flash LED driver dt-bindings: leds: Add Texas Instruments TPS6131x flash LED driver leds: flash: Add support for flash/strobe duration leds: rgb: leds-mt6370-rgb: Improve definition of some struct linear_range leds: led-test: Provide tests for the lookup and get infrastructure leds: led-test: Fill out the registration test to cover more test cases leds: led-test: Remove standard error checking after KUNIT_ASSERT_*() leds: pca995x: Fix typo in pca995x_of_match's of_device_id entry leds: Provide skeleton KUnit testing for the LEDs framework leds: tca6507: Use new GPIO line value setter callbacks leds: pca9532: Use new GPIO line value setter callbacks leds: pca955x: Use new GPIO line value setter callbacks leds: lgm-sso: Use new GPIO line value setter callbacks leds: Do not enable by default during compile testing leds: turris-omnia: Drop commas in the terminator entries leds: lp8860: Disable GPIO with devm action leds: lp8860: Only unlock in lp8860_unlock_eeprom() leds: lp8860: Enable regulator using enable_optional helper leds: lp8860: Remove default regs when not caching leds: lp8860: Use new mutex guards to cleanup function exits ...

Documentation: leds: improve readibility of multicolor doc

2025-05-07T07:02:57+00:00

When reading the documentation of multicolor leds, the HTML output is not easy to read. Improve it by adding a few markups, splitting the console in a dedicated block. Signed-off-by: Jean-Michel Hautbois Signed-off-by: Jonathan Corbet Message-ID: <20250421-leds-doc-v1-1-9a32df7fc6f4@yoseli.org>

Documentation: leds: Remove .rst extension for leds-st1202 on index

2025-04-15T16:57:56+00:00

No other LED driver is listed on index.rst with the extension .rst. Remove it. Fixes: b1816b22381b ("Documentation:leds: Add leds-st1202.rst") Signed-off-by: Manuel Fombuena Link: https://lore.kernel.org/r/CWLP123MB5473137572529F99746F4AC4C5C32@CWLP123MB5473.GBRP123.PROD.OUTLOOK.COM Signed-off-by: Lee Jones

Documentation:leds: Add leds-st1202.rst

2024-12-23T10:13:32+00:00

Add usage for sysfs hw_pattern entry for leds-st1202 Signed-off-by: Vicentiu Galanopulo Link: https://lore.kernel.org/r/20241218182001.41476-2-vicentiu.galanopulo@remote-tech.co.uk Signed-off-by: Lee Jones

Merge tag 'leds-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds

2024-09-23T21:20:11+00:00

Pull LED updates from Lee Jones: - Limited LED current based on thermal conditions in the QCOM flash LED driver - Fixed device child node usage in the BD2606MVV and PCA995x drivers - Used device_for_each_child_node_scoped() to access child nodes in the IS31FL319X driver - Reset the LED controller during the probe in the LM3601X driver - Used device_for_each_child_node() to access device child nodes in the PCA995X driver - Fixed CONFIG_LEDS_CLASS_MULTICOLOR dependency in the BlinkM driver - Replaced msleep() with usleep_range() in the SUN50I-A100 driver - Used scoped device node handling to simplify error paths in the AAT1290, KTD2692, and MC13783 drivers - Added missing of_node_get for probe duration in the MAX77693 driver - Simplified using for_each_available_child_of_node_scoped() loops when iterating over device nodes - Used devm_clk_get_enabled() helpers in the LP55XX driver - Converted DT bindings from TXT to YAML format for various drivers, including LM3692x and SC2731-BLTC - Set num_leds after allocation in the GPIO driver - Removed irrelevant blink configuration error message in the PCA9532 driver - Fixed module autoloading with MODULE_DEVICE_TABLE() in the Turris Omnia driver * tag 'leds-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (38 commits) leds: turris-omnia: Fix module autoloading with MODULE_DEVICE_TABLE() leds: pca9532: Remove irrelevant blink configuration error message leds: gpio: Set num_leds after allocation dt-bindings: leds: Convert leds-lm3692x to YAML format leds: lp55xx: Use devm_clk_get_enabled() helpers leds: as3645a: Use device_* to iterate over device child nodes leds: qcom-lpg: Simplify with scoped for each OF child loop leds: turris-omnia: Simplify with scoped for each OF child loop leds: sc27xx: Simplify with scoped for each OF child loop leds: pca9532: Simplify with scoped for each OF child loop leds: netxbig: Simplify with scoped for each OF child loop leds: mt6323: Simplify with scoped for each OF child loop leds: mc13783: Use scoped device node handling to simplify error paths leds: lp55xx: Simplify with scoped for each OF child loop leds: is31fl32xx: Simplify with scoped for each OF child loop leds: bcm6358: Simplify with scoped for each OF child loop leds: bcm6328: Simplify with scoped for each OF child loop leds: aw2013: Simplify with scoped for each OF child loop leds: 88pm860x: Simplify with scoped for each OF child loop leds: max77693: Simplify with scoped for each OF child loop ...

docs: leds: fix typo in Documentation/leds/leds-mlxcpld.rst

2024-08-26T21:07:59+00:00

Change 'cylce' to 'cycle'. Signed-off-by: Aryabhatta Dey Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/5nib2kj6uh7lkafrmmwcjpeyvs7megdfmseftkjws2wcuztoyc@yhidnl4ilbok

leds: Add multicolor support to BlinkM LED driver

2024-08-01T12:40:02+00:00

Add multicolor support to the BlinkM driver, making it easier to control from userspace. The BlinkM LED is a programmable RGB LED. The driver currently supports only the regular LED sysfs class, resulting in the creation of three distinct classes, one for red, green, and blue. The user then has to input three values into the three seperate brightness files within those classes. The multicolor LED framework makes the device easier to control with the multi_intensity file: the user can input three values at once to form a color, while still controlling the lightness with the brightness file. The main struct blinkm_led has changed slightly. The struct led_classdev for the regular sysfs classes remain. The blinkm_probe function checks CONFIG_LEDS_BLINKM_MULTICOLOR to decide whether to load the seperate sysfs classes or the single multicolor one, but never both. The blinkm_set_mc_brightness() function had to be added to calculate the three color components and then set the fields of the blinkm_data structure accordingly. Signed-off-by: Joseph Strauss Link: https://lore.kernel.org/r/20240710184844.108006-1-jstrauss@mailbox.org Signed-off-by: Lee Jones

docs: leds: leds-blinkm.rst: Fix 'dasy-chain' typo

2024-06-21T10:57:10+00:00

Change 'dasy-chain' to 'daisy-chain'. Signed-off-by: Aryabhatta Dey Link: https://lore.kernel.org/r/qpnx2m6qo5abvbs65o452gicumxa7n5vnw42e3hxnnm7sou4xn@fvu52tilzujc Signed-off-by: Lee Jones

Merge tag 'leds-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds

2023-07-03T18:26:05+00:00

Pull LED updates from Lee Jones: "New Drivers: - Add support for Intel Cherry Trail Whiskey Cove PMIC LEDs - Add support for Awinic AW20036/AW20054/AW20072 LEDs New Device Support: - Add support for PMI632 LPG to QCom LPG - Add support for PMI8998 to QCom Flash - Add support for MT6331, WLEDs and MT6332 to Mediatek MT6323 PMIC New Functionality: - Implement the LP55xx Charge Pump - Add support for suspend / resume to Intel Cherry Trail Whiskey Cove PMIC - Add support for breathing mode to Intel Cherry Trail Whiskey Cove PMIC - Enable per-pin resolution Pinctrl in LEDs GPIO Fix-ups: - Allow thread to sleep by switching from spinlock to mutex - Add lots of Device Tree bindings / support - Adapt relationships / dependencies driven by Kconfig - Switch I2C drivers from .probe_new() to .probe() - Remove superfluous / duplicate code - Replace strlcpy() with strscpy() for efficiency and overflow prevention - Staticify various functions - Trivial: Fixing coding style - Simplify / reduce code Bug Fixes: - Prevent NETDEV_LED_MODE_LINKUP from being cleared on rename - Repair race between led_set_brightness(LED_{OFF,FULL}) - Fix Oops relating to sleeping in critical sections - Clear LED_INIT_DEFAULT_TRIGGER flag when clearing the current trigger - Do not leak resources in error handling paths - Fix unsigned comparison which can never be negative - Provide missing NULL terminating entries in tables - Fix misnaming issues" * tag 'leds-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (53 commits) leds: leds-mt6323: Adjust return/parameter types in wled get/set callbacks leds: sgm3140: Add richtek,rt5033-led compatible dt-bindings: leds: sgm3140: Document richtek,rt5033 compatible dt-bindings: backlight: kinetic,ktz8866: Add missing type for "current-num-sinks" dt-bindings: leds: Drop unneeded quotes leds: Fix config reference for AW200xx driver leds: leds-mt6323: Add support for WLEDs and MT6332 leds: leds-mt6323: Add support for MT6331 leds leds: leds-mt6323: Open code and drop MT6323_CAL_HW_DUTY macro leds: leds-mt6323: Drop MT6323_ prefix from macros and defines leds: leds-mt6323: Specify registers and specs in platform data dt-bindings: leds: leds-mt6323: Document mt6332 compatible dt-bindings: leds: leds-mt6323: Document mt6331 compatible leds: simatic-ipc-leds-gpio: Introduce more Kconfig switches leds: simatic-ipc-leds-gpio: Split up into multiple drivers leds: simatic-ipc-leds-gpio: Move two extra gpio pins into another table leds: simatic-ipc-leds-gpio: Add terminating entries to gpio tables leds: flash: leds-qcom-flash: Fix an unsigned comparison which can never be negative leds: cht-wcove: Remove unneeded semicolon leds: cht-wcove: Fix an unsigned comparison which can never be negative ...