linux/drivers/video/backlight/Makefile, branch master

backlight: Add Congatec Board Controller (CGBC) backlight support

2026-01-08T11:15:00Z

This driver provides backlight brightness control through the Linux backlight subsystem. It communicates with the board controller to adjust LCD backlight using PWM signals. Communication is done through Congatec Board Controller core driver. Tested-by: Thomas Richard Reviewed-by: Thomas Richard Reviewed-by: Daniel Thompson (RISCstar) Signed-off-by: Petri Karhula Link: https://patch.msgid.link/20251205-cgbc-backlight-v6-1-e4175b0bf406@novatron.fi Signed-off-by: Lee Jones

backlight: aw99706: Add support for Awinic AW99706 backlight

2025-11-25T12:54:14Z

Add support for Awinic AW99706 backlight, which can be found in tablet and notebook backlight, one case is the Lenovo Legion Y700 Gen4. This driver refers to the official datasheets and android driver, they can be found in [1]. [1] https://www.awinic.com/en/productDetail/AW99706QNR Signed-off-by: Junjie Cao Tested-by: Pengyu Luo Signed-off-by: Pengyu Luo Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20251109032240.3422503-3-caojunjie650@gmail.com Signed-off-by: Lee Jones

backlight: pcf50633-backlight: Remove unused driver

2025-03-14T11:36:33Z

The pcf50633 was used as part of the OpenMoko devices but the support for its main chip was recently removed in: commit 61b7f8920b17 ("ARM: s3c: remove all s3c24xx support") See https://lore.kernel.org/all/Z8z236h4B5A6Ki3D@gallifrey/ Remove it. Signed-off-by: "Dr. David Alan Gilbert" Link: https://lore.kernel.org/r/20250311014959.743322-8-linux@treblig.org Signed-off-by: Lee Jones

backlight: apple_dwi_bl: Add Apple DWI backlight driver

2025-02-20T15:14:29Z

Add driver for backlight controllers attached via Apple DWI 2-wire interface, which is found on some Apple iPhones, iPads and iPod touches with a LCD display. Although there is an existing apple_bl driver, it is for backlight controllers on Intel Macs attached via PCI, which is completely different from the Samsung-derived DWI block. Reviewed-by: "Daniel Thompson (RISCstar)" Signed-off-by: Nick Chan Reviewed-by: Neal Gompa Link: https://lore.kernel.org/r/20250214040306.16312-3-towinchenmi@gmail.com Signed-off-by: Lee Jones

backlight: Add new lm3509 backlight driver

2024-05-31T14:12:13Z

This is a general driver for LM3509 backlight chip of TI. LM3509 is High Efficiency Boost for White LEDs and/or OLED Displays with Dual Current Sinks. This driver supports OLED/White LED select, brightness control and sub/main control. The datasheet can be found at http://www.ti.com/product/lm3509. Signed-off-by: Patrick Gansterer Reviewed-by: Daniel Thompson Link: https://lore.kernel.org/r/20240526105136.721529-3-paroga@paroga.com Signed-off-by: Lee Jones

backlight: Add Kinetic KTD2801 Backlight support

2024-03-07T08:45:16Z

KTD2801 is a LED backlight driver IC found in samsung,coreprimevelte. The brightness can be set using PWM or the ExpressWire protocol. Add support for the KTD2801. Reviewed-by: Linus Walleij Reviewed-by: Daniel Thompson Signed-off-by: Duje Mihanović Link: https://lore.kernel.org/r/20240125-ktd2801-v5-4-e22da232a825@skole.hr Signed-off-by: Lee Jones

Merge tag 'backlight-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

2024-01-19T00:53:35Z

Pull backlight updates from Lee Jones: "New Drivers: - Add support for Monolithic Power Systems MP3309C WLED Step-up Converter Fix-ups: - Use/convert to new/better APIs/helpers/MACROs instead of hand-rolling implementations - Device Tree Binding updates - Demote non-kerneldoc header comments - Improve error handling; return proper error values, simplify, avoid duplicates, etc - Convert over to the new (kinda) GPIOD API Bug Fixes: - Fix uninitialised local variable" * tag 'backlight-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: backlight: hx8357: Convert to agnostic GPIO API backlight: ili922x: Add an error code check in ili922x_write() backlight: ili922x: Drop kernel-doc for local macros backlight: mp3309c: Fix uninitialized local variable backlight: pwm_bl: Use dev_err_probe backlight: mp3309c: Add support for MPS MP3309C dt-bindings: backlight: mp3309c: Remove two required properties

fbdev: Remove support for Carillo Ranch driver

2024-01-12T11:38:37Z

As far as anybody can tell, this product never shipped. If it did, it shipped in 2007 and nobody has access to one any more. Remove the fbdev driver and the backlight driver. Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Helge Deller

backlight: mp3309c: Add support for MPS MP3309C

2023-11-23T14:54:32Z

The Monolithic Power (MPS) MP3309C is a WLED step-up converter, featuring a programmable switching frequency to optimize efficiency. The brightness can be controlled either by I2C commands (called "analog" mode) or by a PWM input signal (PWM mode). This driver supports both modes. For DT configuration details, please refer to: - Documentation/devicetree/bindings/leds/backlight/mps,mp3309c.yaml The datasheet is available at: - https://www.monolithicpower.com/en/mp3309c.html Signed-off-by: Flavio Suligoi Reviewed-by: Daniel Thompson Link: https://lore.kernel.org/r/20231116105319.957600-3-f.suligoi@asem.it Signed-off-by: Lee Jones

backlight: ktz8866: Add support for Kinetic KTZ8866 backlight

2023-02-22T10:55:28Z

Add support for Kinetic KTZ8866 backlight, which is used in Xiaomi tablet, Mi Pad 5 series. This driver lightly based on downstream implementation [1]. [1] https://github.com/MiCode/Xiaomi_Kernel_OpenSource/blob/elish-r-oss/drivers/video/backlight/ktz8866.c Signed-off-by: Jianhua Lu Reviewed-by: Daniel Thompson Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230120155018.15376-2-lujianhua000@gmail.com