linux-toradex.git/drivers/leds/rgb, branch master Linux kernel for Apalis and Colibri modules Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-22T01:09:51+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-22T00:37:42+00:00 bf4afc53b77aeaa48b5409da5c8da6bb4eff7f43 This was done entirely with mindless brute force, using git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' | xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/' to convert the new alloc_obj() users that had a simple GFP_KERNEL argument to just drop that argument. Note that due to the extreme simplicity of the scripting, any slightly more complex cases spread over multiple lines would not be triggered: they definitely exist, but this covers the vast bulk of the cases, and the resulting diff is also then easier to check automatically. For the same reason the 'flex' versions will be done as a separate conversion. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
This was done entirely with mindless brute force, using

    git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
        xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'

to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.

Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.

For the same reason the 'flex' versions will be done as a separate
conversion.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21T09:02:28+00:00 Kees Cook kees@kernel.org 2026-02-21T07:49:23+00:00 69050f8d6d075dc01af7a5f2f550a8067510366f 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 <kees@kernel.org> 
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 <kees@kernel.org>
leds: Add basic support for TI/National Semiconductor LP5812 LED Driver 2026-02-04T09:23:08+00:00 Nam Tran trannamatk@gmail.com 2026-01-15T16:10:12+00:00 a0309dc699bc6434e3d269539e346f91f17036b8 The LP5812 is a 4x3 matrix RGB LED driver with an autonomous animation engine and time-cross-multiplexing (TCM) support for up to 12 LEDs or 4 RGB LEDs. Each LED can be configured through the related registers to realize vivid and fancy lighting effects. This patch adds minimal driver support for the LP5812, implementing only the essential functionality: I2C communication with the device, LED registration, brightness control in manual mode, and basic sysfs interfaces for LED configuration and fault monitoring. Signed-off-by: Nam Tran <trannamatk@gmail.com> Link: https://patch.msgid.link/20260115161013.40706-2-trannamatk@gmail.com Signed-off-by: Lee Jones <lee@kernel.org> 
The LP5812 is a 4x3 matrix RGB LED driver with an autonomous animation
engine and time-cross-multiplexing (TCM) support for up to 12 LEDs or
4 RGB LEDs. Each LED can be configured through the related registers
to realize vivid and fancy lighting effects.

This patch adds minimal driver support for the LP5812, implementing
only the essential functionality: I2C communication with the device,
LED registration, brightness control in manual mode, and basic sysfs
interfaces for LED configuration and fault monitoring.

Signed-off-by: Nam Tran <trannamatk@gmail.com>
Link: https://patch.msgid.link/20260115161013.40706-2-trannamatk@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
leds: qcom-lpg: Check the return value of regmap_bulk_write() 2026-02-04T09:21:05+00:00 Haotian Zhang vulab@iscas.ac.cn 2026-01-08T17:51:33+00:00 f42033b5ce8c79c5db645916c9a72ee3e10cecfa The lpg_lut_store() function currently ignores the return value of regmap_bulk_write() and always returns 0. This can cause hardware write failures to go undetected, leading the caller to believe LUT programming succeeded when it may have failed. Check the return value of regmap_bulk_write() in lpg_lut_store and return the error to the caller on failure. Fixes: 24e2d05d1b68 ("leds: Add driver for Qualcomm LPG") Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn> Link: https://patch.msgid.link/20260108175133.638-1-vulab@iscas.ac.cn Signed-off-by: Lee Jones <lee@kernel.org> 
The lpg_lut_store() function currently ignores the return value of
regmap_bulk_write() and always returns 0. This can cause hardware write
failures to go undetected, leading the caller to believe LUT programming
succeeded when it may have failed.

Check the return value of regmap_bulk_write() in lpg_lut_store and return
the error to the caller on failure.

Fixes: 24e2d05d1b68 ("leds: Add driver for Qualcomm LPG")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20260108175133.638-1-vulab@iscas.ac.cn
Signed-off-by: Lee Jones <lee@kernel.org>
leds: rgb: leds-qcom-lpg: Don't enable TRILED when configuring PWM 2025-11-20T15:25:19+00:00 Fenglin Wu fenglin.wu@oss.qualcomm.com 2025-11-19T06:06:43+00:00 072cd5f458d76b9e15d89ebdaea8b5cb1312eeef The PWM signal from the LPG channel can be routed to PMIC GPIOs with proper GPIO configuration, and it is not necessary to enable the TRILED channel in that case. This also applies to the LPG channels that mapped to TRILED channels. Additionally, enabling the TRILED channel unnecessarily would cause a voltage increase in its power supply. Hence remove it. Fixes: 24e2d05d1b68 ("leds: Add driver for Qualcomm LPG") Signed-off-by: Fenglin Wu <fenglin.wu@oss.qualcomm.com> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Link: https://patch.msgid.link/20251119-lpg_triled_fix-v3-2-84b6dbdc774a@oss.qualcomm.com Signed-off-by: Lee Jones <lee@kernel.org> 
The PWM signal from the LPG channel can be routed to PMIC GPIOs with
proper GPIO configuration, and it is not necessary to enable the
TRILED channel in that case. This also applies to the LPG channels
that mapped to TRILED channels. Additionally, enabling the TRILED
channel unnecessarily would cause a voltage increase in its power
supply. Hence remove it.

Fixes: 24e2d05d1b68 ("leds: Add driver for Qualcomm LPG")
Signed-off-by: Fenglin Wu <fenglin.wu@oss.qualcomm.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Link: https://patch.msgid.link/20251119-lpg_triled_fix-v3-2-84b6dbdc774a@oss.qualcomm.com
Signed-off-by: Lee Jones <lee@kernel.org>
leds: rgb: leds-qcom-lpg: Allow LED_COLOR_ID_MULTI 2025-11-20T14:25:37+00:00 Konrad Dybcio konrad.dybcio@oss.qualcomm.com 2025-11-17T13:45:59+00:00 fc6a6da64fd847c3122848c5a0850daaeb0874e5 There's nothing special about RGB multi-led instances. Allow any color combinations by simply extending the "if _RGB" checks. Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Reviewed-by: David Heidelberg <david@ixit.cz> Link: https://patch.msgid.link/20251117-topic-lpg_multi-v1-1-05604374a2dd@oss.qualcomm.com Signed-off-by: Lee Jones <lee@kernel.org> 
There's nothing special about RGB multi-led instances. Allow any color
combinations by simply extending the "if _RGB" checks.

Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: David Heidelberg <david@ixit.cz>
Link: https://patch.msgid.link/20251117-topic-lpg_multi-v1-1-05604374a2dd@oss.qualcomm.com
Signed-off-by: Lee Jones <lee@kernel.org>
leds: Use fwnode_for_each_child_node() instead 2025-10-21T09:46:16+00:00 Sakari Ailus sakari.ailus@linux.intel.com 2025-09-24T07:45:59+00:00 3b6eaa3db567d0f90ef1fc46424a19c23922b0be fwnode_for_each_child_node() is now the same as fwnode_for_each_available_child_node() on all backends (OF, ACPI and swnode). In order to remove the available variants, switch the uses to non-available variants. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Lee Jones <lee@kernel.org> 
fwnode_for_each_child_node() is now the same as
fwnode_for_each_available_child_node() on all backends (OF, ACPI and
swnode). In order to remove the available variants, switch the uses to
non-available variants.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Lee Jones <lee@kernel.org>
leds: rgb: leds-mt6370-rgb: Improve definition of some struct linear_range 2025-05-14T08:25:08+00:00 Christophe JAILLET christophe.jaillet@wanadoo.fr 2025-05-02T14:51:22+00:00 f1c86ab98640e9288049673ca2e4517a9df7ed83 Use LINEAR_RANGE() instead of hand-writing it. It is more robust, should the layout of the structure change one day. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/1ce4245107e0a51dce502a007a69899bda018d5f.1746197460.git.christophe.jaillet@wanadoo.fr Signed-off-by: Lee Jones <lee@kernel.org> 
Use LINEAR_RANGE() instead of hand-writing it. It is more robust, should
the layout of the structure change one day.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/1ce4245107e0a51dce502a007a69899bda018d5f.1746197460.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Lee Jones <lee@kernel.org>
leds: ncp5623: Use fwnode_get_child_node_count() 2025-04-10T09:12:24+00:00 Andy Shevchenko andriy.shevchenko@linux.intel.com 2025-03-10T14:54:53+00:00 53762bb44b0659e79a3e3177372e823ec4afcc8a Since fwnode_get_child_node_count() was split from its device property counterpart, we may utilise it in the driver and drop custom implementation. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20250310150835.3139322-4-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones <lee@kernel.org> 
Since fwnode_get_child_node_count() was split from its device property
counterpart, we may utilise it in the driver and drop custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20250310150835.3139322-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Lee Jones <lee@kernel.org>
leds: pwm-multicolor: Use fwnode_get_child_node_count() 2025-04-10T09:12:20+00:00 Andy Shevchenko andriy.shevchenko@linux.intel.com 2025-03-10T14:54:52+00:00 4623cc4e9a5f1b7ad7e6599dfc2a5a4d9d4f5d72 Since fwnode_get_child_node_count() was split from its device property counterpart, we may utilise it in the driver and drop custom implementation. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20250310150835.3139322-3-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones <lee@kernel.org> 
Since fwnode_get_child_node_count() was split from its device property
counterpart, we may utilise it in the driver and drop custom implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20250310150835.3139322-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Lee Jones <lee@kernel.org>