kernel/linux.git/drivers/video/backlight, branch v7.2-rc1

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

backlight: cgbc: Remove redundant X86 dependency

2026-05-07T13:25:19+00:00

The backlight driver depends on the MFD cgbc-core driver, which already depends on X86. The explicit X86 dependency for the backlight driver is redundant and can be safely removed. Signed-off-by: Thomas Richard Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260427-backlight-cgbc-remove-x86-dependency-v2-1-da9f2375a34a@bootlin.com Signed-off-by: Lee Jones

backlight: Add max25014atg backlight

2026-04-30T13:54:34+00:00

The Maxim MAX25014 is a 4-channel automotive grade backlight driver IC with integrated boost controller. Signed-off-by: Maud Spierings Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260407-max25014-v8-2-14eac7ed673a@gocontroll.com Signed-off-by: Lee Jones

backlight: ktd2801: Enable BL_CORE_SUSPENDRESUME

2026-04-30T13:34:38+00:00

Boards using this backlight chip do not power the backlight off on suspend. Enable BL_CORE_SUSPENDRESUME so the chip gets powered off by the backlight core on suspend. Tested on samsung,coreprimevelte. Cc: stable@vger.kernel.org # v6.19 Signed-off-by: Duje Mihanović Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260328-ktd2801-pm-fix-v1-1-007cb103faeb@dujemihanovic.xyz Signed-off-by: Lee Jones

backlight: apple_bl: Convert to a platform driver

2026-03-31T10:48:10+00:00

In all cases in which a struct acpi_driver is used for binding a driver to an ACPI device object, a corresponding platform device is created by the ACPI core and that device is regarded as a proper representation of underlying hardware. Accordingly, a struct platform_driver should be used by driver code to bind to that device. There are multiple reasons why drivers should not bind directly to ACPI device objects [1]. Overall, it is better to bind drivers to platform devices than to their ACPI companions, so convert the Apple Backlight ACPI driver to a platform one. While this is not expected to alter functionality, it changes sysfs layout and so it will be visible to user space. Link: https://lore.kernel.org/all/2396510.ElGaqSPkdT@rafael.j.wysocki/ [1] Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/5084777.GXAFRqVoOG@rafael.j.wysocki Signed-off-by: Lee Jones

backlight: sky81452-backlight: Check return value of devm_gpiod_get_optional() in sky81452_bl_parse_dt()

2026-03-06T14:21:07+00:00

The devm_gpiod_get_optional() function may return an ERR_PTR in case of genuine GPIO acquisition errors, not just NULL which indicates the legitimate absence of an optional GPIO. Add an IS_ERR() check after the call in sky81452_bl_parse_dt(). On error, return the error code to ensure proper failure handling rather than proceeding with invalid pointers. Fixes: e1915eec54a6 ("backlight: sky81452: Convert to GPIO descriptors") Signed-off-by: Chen Ni Reviewed-by: Linus Walleij Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260203021625.578678-1-nichen@iscas.ac.cn Signed-off-by: Lee Jones

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

backlight: qcom-wled: Change PM8950 WLED configurations

2026-02-04T10:26:03+00:00

PMI8950 WLED needs same configurations as PMI8994 WLED. Fixes: 10258bf4534b ("backlight: qcom-wled: Add PMI8950 compatible") Signed-off-by: Barnabás Czémán Reviewed-by: Konrad Dybcio Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260116-pmi8950-wled-v3-4-e6c93de84079@mainlining.org Signed-off-by: Lee Jones

backlight: qcom-wled: Support ovp values for PMI8994

2026-02-04T10:25:03+00:00

WLED4 found in PMI8994 supports different ovp values. Fixes: 6fc632d3e3e0 ("video: backlight: qcom-wled: Add PMI8994 compatible") Signed-off-by: Barnabás Czémán Reviewed-by: Konrad Dybcio Reviewed-by: Daniel Thompson (RISCstar) Link: https://patch.msgid.link/20260116-pmi8950-wled-v3-2-e6c93de84079@mainlining.org Signed-off-by: Lee Jones