[PATCH v4 0/3] Apple DWI backlight driver
From: Nick Chan
Date: Wed Dec 11 2024 - 06:35:41 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 v3:
- $ref to common.yaml in bindings
- (and then additionalProperties is changed to unevaluatedProperties)
- Use hex everywhere in bindings example
- Use sizeof(*dwi_bl) instead of the type of the struct when doing
devm_kzalloc()
- Use devm_platform_get_and_ioremap_resource() in driver
- Fix sorting in drivers/video/backlight/Makefile
- In drivers/video/backlight/Kconfig, move config to right after
BACKLIGHT_APPLE
- Explain this driver being completely different from apple_bl
v3: https://lore.kernel.org/asahi/20241209075908.140014-1-towinchenmi@xxxxxxxxx/T
Changes since v2:
- Add missing includes in driver
- Fix file path in MAINTAINERS
v2: https://lore.kernel.org/asahi/20241207130433.30351-1-towinchenmi@xxxxxxxxx/T
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 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 | 57 ++++++++
MAINTAINERS | 2 +
drivers/video/backlight/Kconfig | 12 ++
drivers/video/backlight/Makefile | 1 +
drivers/video/backlight/dwi_bl.c | 122 ++++++++++++++++++
5 files changed, 194 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/backlight/apple,dwi-bl.yaml
create mode 100644 drivers/video/backlight/dwi_bl.c
base-commit: fac04efc5c793dccbd07e2d59af9f90b7fc0dca4
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2.47.1