kernel/git/stable/linux.git/drivers/video/backlight, branch master

Merge tag 'backlight-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

2026-08-27T18:16:39+00:00

Pull backlight updates from Lee Jones: "New Support & Features: - Silergy SY7758: Add driver for the 6-channel high-efficiency LED driver Improvements & Fixes - Awinic AW99706: Fix device tree property names to match the binding, consistently validate all property values, and honor the core blank state in `update_status()` - Kinetic KTD2801: Add missing dependency on `GPIOLIB` in Kconfig - Qualcomm WLED: Remove redundant `dev_err()` calls Cleanups & Refactoring - Core: Use `sysfs_emit()` instead of `sprintf()` in sysfs show callbacks - Maintainers: Update Junjie Cao's email address for the Awinic AW99706 driver Device Tree Binding Updates - Marvell 88PM860X: Add missing bracket in the example - Silergy SY7758: Document the 6-channel high-efficiency LED driver" * tag 'backlight-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: backlight: Use sysfs_emit() instead of sprintf() backlight: qcom-wled: Remove redundant dev_err() backlight: ktd2801: Fix unmet dependency on GPIOLIB backlight: aw99706: Honor the core blank state in update_status() backlight: aw99706: Validate all DT property values consistently backlight: aw99706: Fix DT property names to match binding dt-bindings: backlight: 88pm860x: Add missing bracket MAINTAINERS: Update my email address for the AW99706 backlight driver backlight: Add SY7758 6-channel High Efficiency LED Driver support dt-bindings: leds: backlight: Document the SY7758 6-channel High Efficiency LED Driver

backlight: Use sysfs_emit() instead of sprintf()

2026-08-12T13:06:29+00:00

Replace sprintf() with sysfs_emit() in the sysfs show callbacks of backlight.c and lcd.c, as recommended by Documentation/filesystems/sysfs.rst. No functional change intended. Signed-off-by: Levente Szajko Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260805135027.43890-1-raedrimhun@proton.me Signed-off-by: Lee Jones

backlight: qcom-wled: Remove redundant dev_err()

2026-08-12T13:06:05+00:00

Since commit 55b48e23f5c4 ("genirq/devres: Add error handling in devm_request_*_irq()"), devm_request_threaded_irq() automatically logs detailed error messages on failure. Remove the now-redundant driver-specific dev_err() calls. Signed-off-by: Pan Chuang Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260722065709.346072-1-panchuang@vivo.com Signed-off-by: Lee Jones

backlight: ktd2801: Fix unmet dependency on GPIOLIB

2026-08-12T12:15:30+00:00

LEDS_EXPRESSWIRE depends on GPIOLIB, so its selector, BACKLIGHT_KTD2801 also needs to ensure GPIOLIB is enabled. Otherwise: WARNING: unmet direct dependencies detected for LEDS_EXPRESSWIRE Depends on [n]: NEW_LEDS [=n] && GPIOLIB [=n] Selected by [y]: - BACKLIGHT_KTD2801 [=y] && HAS_IOMEM [=y] && BACKLIGHT_CLASS_DEVICE [=y] This unmet dependency was found by kconfirm, a static analysis tool for Kconfig. Fixes: d95963e309bc ("backlight: ktd2801: Depend on GPIOLIB") Signed-off-by: Julian Braha Reviewed-by: Daniel Thompson (RISCstar) Acked-by: Duje Mihanović Tested-by: Randy Dunlap Acked-by: Randy Dunlap Link: https://patch.msgid.link/20260719024902.151710-1-julianbraha@gmail.com Signed-off-by: Lee Jones

backlight: aw99706: Honor the core blank state in update_status()

2026-08-12T12:15:00+00:00

update_status() passes props.brightness straight to the hardware and ignores the power/blank state tracked by the core. Writing 4 to the bl_power sysfs attribute or blanking the framebuffer therefore leaves the backlight lit. Use backlight_get_brightness(), which returns 0 while the device is blanked. Fixes: 147b38a5ad06 ("backlight: aw99706: Add support for Awinic AW99706 backlight") Cc: stable@vger.kernel.org Signed-off-by: Junjie Cao Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260804030255.1934470-4-junjie.cao@intel.com Signed-off-by: Lee Jones

backlight: aw99706: Validate all DT property values consistently

2026-08-12T12:15:00+00:00

The lookup helpers for dim-mode and ramp-ctl take a shortcut when lookup_tbl is NULL: they accept any u32 value without range-checking and return success unconditionally. Out-of-range values get silently truncated by regmap_update_bits instead of triggering the dev_warn + default-fallback path that the other properties use. Add a field-width check for the NULL-table case so that values exceeding the register field maximum are rejected the same way a table-lookup miss is. The switching frequency table has a second hole: reserved slots use 0 as their marker, so "awinic,sw-freq-hz = <0>" matches slot 0 and programs a reserved encoding. Make the reserved marker U32_MAX and skip such slots during lookup. While here, also switch the error returns to -EINVAL for consistency. Fixes: 147b38a5ad06 ("backlight: aw99706: Add support for Awinic AW99706 backlight") Signed-off-by: Junjie Cao Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260804030255.1934470-3-junjie.cao@intel.com Signed-off-by: Lee Jones

backlight: aw99706: Fix DT property names to match binding

2026-08-12T12:15:00+00:00

The driver reads four tuning properties without the unit suffixes that the binding mandates: "awinic,sw-freq" instead of "awinic,sw-freq-hz", "awinic,sw-ilmt" instead of "awinic,sw-ilmt-microamp", "awinic,iled-max" instead of "awinic,iled-max-microamp", and "awinic,uvlo-thres" instead of "awinic,uvlo-thres-microvolt". As a result, device_property_read_u32() never finds these properties in a binding-conformant device tree and silently falls back to the compiled-in defaults for switching frequency, switching current limit, max LED current, and UVLO threshold. Fix by aligning the property name strings in aw99706_dt_props[] with the binding. No value/range changes are needed since both sides already use the same units and enumerations. Fixes: 147b38a5ad06 ("backlight: aw99706: Add support for Awinic AW99706 backlight") Cc: stable@vger.kernel.org Signed-off-by: Junjie Cao Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260804030255.1934470-2-junjie.cao@intel.com Signed-off-by: Lee Jones

Replace by more specific (c files)

2026-07-03T05:38:17+00:00

Replace the #include of by the more specific where applicable. For most cases the include can be dropped completely, only a few drivers need one or two headers added. Acked-by: Danilo Krummrich Acked-by: Takashi Sakamoto Acked-by: Bjorn Helgaas Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König (The Capable Hub)

backlight: Add SY7758 6-channel High Efficiency LED Driver support

2026-07-02T16:30:33+00:00

Implement support for the Silergy SY7758 6-channel High Efficiency LED Driver used for backlight brightness control in the Ayaneo Pocket S2 dual-DSI panel. Signed-off-by: KancyJoe Signed-off-by: Neil Armstrong Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260529-topic-sm8650-ayaneo-pocket-s2-sy7758-v5-2-03aacd49747c@linaro.org Signed-off-by: Lee Jones

backlight: Use named initializers for arrays of i2c_device_data

2026-06-11T14:12:12+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 in the list terminator. 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: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260518111203.639603-2-u.kleine-koenig@baylibre.com Signed-off-by: Lee Jones