[PATCH v2 0/3] Apple DWI backlight driver

From: Nick Chan
Date: Sat Dec 07 2024 - 08:05:29 EST


Apple SoCs come with a 2-wire interface named DWI. On some iPhones, iPads
and iPod touches the backlight controller is connected via this interface.
This series adds a backlight driver for backlight controllers connected
this way.

Changes since v1:
- Fixed dt-bindings $id.
- Make power-domains an optional property in dt-bindings.
- Added missing error checking after devm_ioremap_resource() in
dwi_bl_probe().

v1: https://lore.kernel.org/asahi/20241206172735.4310-1-towinchenmi@xxxxxxxxx/T

Nick Chan
---
Nick Chan (3):
dt-bindings: leds: backlight: apple,dwi-bl: Add bindings for Apple DWI
backlight
backlight: dwi_bl: Add Apple DWI backlight driver
MAINTAINERS: Add entries for Apple DWI backlight controller

.../bindings/leds/backlight/apple,dwi-bl.yaml | 54 ++++++++
MAINTAINERS | 2 +
drivers/video/backlight/Kconfig | 12 ++
drivers/video/backlight/Makefile | 1 +
drivers/video/backlight/dwi_bl.c | 124 ++++++++++++++++++
5 files changed, 193 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/backlight/apple,dwi-bl.yaml
create mode 100644 drivers/video/backlight/dwi_bl.c


base-commit: 40384c840ea1944d7c5a392e8975ed088ecf0b37
--
2.47.1