From: Nick Chan <towinchenmi@gmail.com>
To: Janne Grunau <j@jannau.net>, Sven Peter <sven@svenpeter.dev>,
Alyssa Rosenzweig <alyssa@rosenzweig.io>,
Lee Jones <lee@kernel.org>, Daniel Thompson <danielt@kernel.org>,
Jingoo Han <jingoohan1@gmail.com>, Pavel Machek <pavel@ucw.cz>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Helge Deller <deller@gmx.de>,
Nick Chan <towinchenmi@gmail.com>,
asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fbdev@vger.kernel.org
Subject: [PATCH v6 0/3] Apple DWI backlight driver
Date: Fri, 14 Feb 2025 12:02:11 +0800 [thread overview]
Message-ID: <20250214040306.16312-1-towinchenmi@gmail.com> (raw)
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 v5:
- Remove default y from drivers/video/backlight/Kconfig
v5: https://lore.kernel.org/asahi/20250203115156.28174-1-towinchenmi@gmail.com/T
Changes since v4:
- Change type to BACKLIGHT_PLATFORM since the driver does not directly
interface with the backlight controller. The actual backlight controller
can be directly controlled via i2c and is not the same on all hardware
that supports the dwi interface.
- Rename file to apple_dwi_bl.c to better match config option.
- Rename driver to apple-dwi-bl to better match config option
- Indicate that the backlight scales linearly
v4: https://lore.kernel.org/asahi/20241211113512.19009-1-towinchenmi@gmail.com/T
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@gmail.com/T
Changes since v2:
- Add missing includes in driver
- Fix file path in MAINTAINERS
v2: https://lore.kernel.org/asahi/20241207130433.30351-1-towinchenmi@gmail.com/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@gmail.com/T
Nick Chan
---
Nick Chan (3):
dt-bindings: leds: backlight: apple,dwi-bl: Add Apple DWI backlight
backlight: apple_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 | 11 ++
drivers/video/backlight/Makefile | 1 +
drivers/video/backlight/apple_dwi_bl.c | 123 ++++++++++++++++++
5 files changed, 194 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/backlight/apple,dwi-bl.yaml
create mode 100644 drivers/video/backlight/apple_dwi_bl.c
base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b
--
2.48.1
next reply other threads:[~2025-02-14 4:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-14 4:02 Nick Chan [this message]
2025-02-14 4:02 ` [PATCH v6 1/3] dt-bindings: leds: backlight: apple,dwi-bl: Add Apple DWI backlight Nick Chan
2025-02-14 4:02 ` [PATCH v6 1/3] dt-bindings: leds: backlight: apple, dwi-bl: " Nick Chan
2025-02-14 4:02 ` [PATCH v6 2/3] backlight: apple_dwi_bl: Add Apple DWI backlight driver Nick Chan
2025-02-14 4:02 ` [PATCH v6 3/3] MAINTAINERS: Add entries for Apple DWI backlight controller Nick Chan
2025-02-14 7:24 ` [PATCH v6 0/3] Apple DWI backlight driver Neal Gompa
2025-02-20 15:14 ` Lee Jones
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