kernel/linux.git/drivers/leds, branch v7.2-rc1

Merge tag 'leds-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds

2026-06-18T21:45:08+00:00

Pull LED updates from Lee Jones: "New Support & Features: - Samsung S2MU005: Add support for the Samsung S2MU005 PMIC which includes flash and RGB LED controllers - Texas Instruments: - LP5812: Add support for the TI LP5812 LED driver - LP5860: Add support for the Texas Instruments LP5860 LED matrix driver via SPI Improvements & Fixes: - Core: - Adjust the brightness sysfs node documentation to clarify that only decimal values are accepted - Fix a race condition in the software blink logic when stopping blinking and setting brightness simultaneously - Introduce the `multi_max_intensity` sysfs attribute for multicolor LEDs to support hardware-based global brightness control - Replace OF-based device lookup with firmware node equivalents to support ACPI and software nodes - Return `ENODATA` when reading brightness from hardware-controlled LEDs - Set the coherent DMA mask to zero for the Samsung PMIC device to suppress unnecessary "DMA mask not set" messages - ams OSRAM AS3668: Fix a Kconfig symbol name mismatch in the Makefile that prevented the driver from being built - BlinkM: Fix spelling and comment style issues in the driver - DAC124S085: Declare the SPI command word as `__le16` to ensure correct endianness and pass sparse checks - GPIO Trigger: Use `GPIOD_FLAGS_BIT_NONEXCLUSIVE` to allow sharing GPIOs between the LED trigger and other drivers - NXP PCA9532: Fix an issue where the LED would stop blinking when changing brightness to a non-zero value - Qualcomm: Unify the user-visible company name to "Qualcomm" across flash LED config options - Qualcomm LPG: Optimize memory allocation by combining main structure and channels into a single allocation using flexible array members - Texas Instruments - LP5860: Add missing `CONFIG_OF` dependency to prevent build warnings - TPS6131x: Increase the overvoltage protection threshold to 6V to avoid false triggers with 5V input supplies - Userspace LEDs (uLEDs): - Fix a potential buffer overread by using `strnchr()` for name string validation - Return `-EFAULT` on `copy_to_user()` failure to properly handle read errors Cleanups & Refactoring: - Core: - Convert various `i2c_device_id` arrays to use named initializers for improved robustness and readability - Multi-color: Fix incorrect `KernelVersion` and `Date` tags for the `multi_max_intensity` ABI - Broadcom BCM63138 / ChromeOS EC: Move `MODULE_DEVICE_TABLE` declarations next to the ID tables for consistency - LP5812: Fix a sysfs ABI reference in the documentation - ST1202: Remove an unused legacy GPIO header include Device Tree Binding Updates: - Class: Document the keyboard backlight LED class naming conventions, including a new scheme for zoned backlights - Core: Dual-license the common LED bindings header under GPLv2 and BSD-2-Clause - IR SPI LED: Add a new 30% duty-cycle value for the IR transmitter used in Xiaomi Redmi Note 8 - Samsung S2M series: - Document the flash LED device bindings for Samsung S2M series PMICs - Document the pattern behavior for Samsung S2M series PMIC RGB - S2MU005: Add device tree bindings for the S2MU005 PMIC, including its flash and RGB LED sub-devices - TI LM3560: Document the TI LM3559 and LM3560 synchronous boost flash drivers" * tag 'leds-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (30 commits) leds: tps6131x: Increase overvoltage protection threshold to 6V leds: Fix sysfs ABI date leds: Fix CONFIG_OF dependency for LEDS_LP5860_CORE leds: uleds: Fix potential buffer overread leds: Use named initializers for arrays of i2c_device_data leds: uleds: Return -EFAULT on copy_to_user() failure leds: core: Report ENODATA for brightness of hardware controlled LED leds: class: Use firmware nodes for device lookup Documentation: leds: Document pattern behavior of Samsung S2M series PMIC RGB LEDs leds: rgb: Add support for Samsung S2M series PMIC RGB LED device leds: flash: Add support for Samsung S2M series PMIC flash LED device dt-bindings: leds: Document Samsung S2M series PMIC flash LED device leds: core: Fix race condition for software blink leds: Adjust documentation of brightness sysfs node leds: dac124s085: Declare SPI command word as __le16 leds: Introduce the multi_max_intensity sysfs attribute dt-bindings: leds: Document TI LM3560 Synchronous Boost Flash Driver leds: bcm63138/cros_ec: Move MODULE_DEVICE_TABLE next to the table itself leds: Add support for TI LP5860 LED driver chip Documentation: leds: leds-class: Document keyboard backlight LED class naming ...

leds: tps6131x: Increase overvoltage protection threshold to 6V

2026-06-17T10:30:17+00:00

Currently, there may be cases where the overvoltage detection is triggered even with a valid and generally functioning hardware setup. This occurs, for example, when the input voltage exceeds the currently used overvoltage threshold of 4.65V (typical). Since input voltages up to 5V are supported, the threshold should be adjusted accordingly. While the target output voltage setting has no effect on the LED operation used here, it indirectly selects the threshold for overvoltage detection. Set this to a value of 4.95V to select a threshold of 6V (typical). Signed-off-by: Matthias Fend Link: https://patch.msgid.link/20260527-leds-tps6131x-ovp-v1-1-1ac70d03c9eb@emfend.at Signed-off-by: Lee Jones

leds: Fix CONFIG_OF dependency for LEDS_LP5860_CORE

2026-06-17T10:30:11+00:00

Building LEDS_LP5860_SPI without CONFIG_OF leads to a build time warning: WARNING: unmet direct dependencies detected for LEDS_LP5860_CORE Depends on [n]: NEW_LEDS [=y] && LEDS_CLASS_MULTICOLOR [=y] && LEDS_CLASS [=y] && OF [=n] Selected by [y]: - LEDS_LP5860_SPI [=y] && NEW_LEDS [=y] && LEDS_CLASS_MULTICOLOR [=y] && SPI [=y] Address this by adding the same dependency here as well. Fixes: 3daf2c4ef82b ("leds: Add support for TI LP5860 LED driver chip") Signed-off-by: Arnd Bergmann Link: https://patch.msgid.link/20260526103738.3389272-1-arnd@kernel.org Signed-off-by: Lee Jones

leds: uleds: Fix potential buffer overread

2026-06-17T10:30:08+00:00

The name string supplied by userspace is not guaranteed to be null-terminated, so using strchr() on it might result in a buffer overread. The same thing will happen when said string is used by the LED class device. Fix this by using strnchr() instead and explicitly check that the name string is properly null-terminated. Cc: stable@vger.kernel.org Fixes: e381322b0190 ("leds: Introduce userspace LED class driver") Signed-off-by: Armin Wolf Link: https://patch.msgid.link/20260524235553.189134-1-W_Armin@gmx.de Signed-off-by: Lee Jones

leds: Use named initializers for arrays of i2c_device_data

2026-06-17T10:29:48+00:00

While being less compact, using named initializers allows to more easily see which members of the structs are assigned which value without having to lookup the declaration of the struct. And it's also more robust against changes to the struct definition. The mentioned robustness is relevant for a planned change to struct i2c_device_id that replaces .driver_data by an anonymous union. While touching all these arrays, unify usage of whitespace and commas. This patch doesn't modify the compiled arrays, only their representation in source form benefits. The former was confirmed with x86 and arm64 builds. Signed-off-by: Uwe Kleine-König (The Capable Hub) Reviewed-by: Alexander Sverdlin Link: https://patch.msgid.link/20260522104222.4081017-2-u.kleine-koenig@baylibre.com Signed-off-by: Lee Jones

leds: uleds: Return -EFAULT on copy_to_user() failure

2026-06-17T10:29:45+00:00

uleds_read() copies the current brightness value to userspace but ignores copy_to_user() failures. It then clears the pending update and reports a successful full read even when no data was copied. Return -EFAULT when the copy fails and leave the update pending so a later read can retry. Signed-off-by: Yousef Alhouseen Link: https://patch.msgid.link/20260521181205.15130-1-alhouseenyousef@gmail.com Signed-off-by: Lee Jones

leds: core: Report ENODATA for brightness of hardware controlled LED

2026-06-17T10:29:42+00:00

While the LED is controlled fully by the hardware, the value cached by the LED driver core is incorrect. Return ENODATA to userspace in this case. Signed-off-by: Thomas Weißschuh Link: https://patch.msgid.link/20260521-cros_ec-leds-hw-trigger-brightness-v1-1-6cd9d7c9671e@weissschuh.net Signed-off-by: Lee Jones

leds: class: Use firmware nodes for device lookup

2026-06-17T10:29:39+00:00

Replace the OF based lookup with the fwnode equivalent to get support for ACPI and software nodes. Signed-off-by: Alban Bedel Link: https://patch.msgid.link/20260513115853.1584230-1-alban.bedel@lht.dlh.de Signed-off-by: Lee Jones

leds: rgb: Add support for Samsung S2M series PMIC RGB LED device

2026-06-17T10:29:22+00:00

Add support for the RGB LEDs found in certain Samsung S2M series PMICs. The device has three LED channels, controlled as a single device. These LEDs are typically used as status indicators in mobile phones. The driver includes initial support for the S2MU005 PMIC RGB LEDs. Signed-off-by: Kaustabh Chakraborty Link: https://patch.msgid.link/20260516-s2mu005-pmic-v7-7-73f9702fb461@disroot.org Signed-off-by: Lee Jones

leds: flash: Add support for Samsung S2M series PMIC flash LED device

2026-06-17T10:29:12+00:00

Add support for flash LEDs found in certain Samsung S2M series PMICs. The device has two channels for LEDs, typically for the back and front cameras in mobile devices. Both channels can be independently controlled, and can be operated in torch or flash modes. The driver includes initial support for the S2MU005 PMIC flash LEDs. Signed-off-by: Kaustabh Chakraborty Link: https://patch.msgid.link/20260516-s2mu005-pmic-v7-6-73f9702fb461@disroot.org Signed-off-by: Lee Jones