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Apply a very basic implementation of KUnit LED testing.
More tests / use-cases will be added steadily over time.
CMD:
tools/testing/kunit/kunit.py run --kunitconfig drivers/leds
OUTPUT:
[15:34:19] Configuring KUnit Kernel ...
[15:34:19] Building KUnit Kernel ...
Populating config with:
$ make ARCH=um O=.kunit olddefconfig
Building with:
$ make all compile_commands.json scripts_gdb ARCH=um O=.kunit --jobs=20
[15:34:22] Starting KUnit Kernel (1/1)...
[15:34:22] ============================================================
Running tests with:
$ .kunit/linux kunit.enable=1 mem=1G console=tty kunit_shutdown=halt
[15:34:23] ===================== led (1 subtest) ======================
[15:34:23] [PASSED] led_test_class_register
[15:34:23] ======================= [PASSED] led =======================
[15:34:23] ============================================================
[15:34:23] Testing complete. Ran 1 tests: passed: 1
[15:34:23] Elapsed time: 4.268s total, 0.001s configuring, 3.048s building, 1.214s running
Link: https://lore.kernel.org/r/20250424144544.1438584-1-lee@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds
Pull LED updates from Lee Jones:
- pca955x: Add HW blink support, utilizing PWM0. It supports one
frequency across all blinking LEDs and falls back to software blink
if different frequencies are requested.
- trigger: netdev: Allow configuring LED blink interval via .blink_set
even when HW offload (.hw_control) is enabled.
- led-core: Fix a race condition where a quick LED_OFF followed by
another brightness set could leave the LED off incorrectly,
especially noticeable after the introduction of the ordered
workqueue.
- qcom-lpg: Add support for 6-bit PWM resolution alongside the existing
9-bit support.
- qcom-lpg: Fix PWM value capping to respect the selected resolution
(6-bit or 9-bit) for normal PWMs.
- qcom-lpg: Fix PWM value capping to respect the selected resolution
for Hi-Res PWMs.
- qcom-lpg: Fix calculation of the best period for Hi-Res PWMs to
prevent requested duty cycles from exceeding the maximum allowed by
the selected resolution.
- st1202: Add a check for the error code returned by devm_mutex_init().
- pwm-multicolor: Add a check for the return value of
fwnode_property_read_u32().
- st1202: Ensure hardware initialization (st1202_setup) happens before
DT node processing (st1202_dt_init).
- Kconfig: leds-st1202: Add select LEDS_TRIGGER_PATTERN as it's
required by the driver.
- lp8860: Drop unneeded explicit assignment to REGCACHE_NONE.
- pca955x: Refactor code with helper functions and rename some
functions/variables for clarity.
- pca955x: Pass driver data pointers instead of the I2C client to
helper functions.
- pca955x: Optimize probe LED selection logic to reduce I2C operations.
- pca955x: Revert the removal of pca95xx_num_led_regs() (renaming it to
pca955x_num_led_regs) as it's needed for HW blink support.
- st1202: Refactor st1202_led_set() to use the !! operator for boolean
conversion.
- st1202: Minor spacing and proofreading edits in comments.
- Directory Rename: Rename the drivers/leds/simple directory to
drivers/leds/simatic as the drivers within are not simple.
- mlxcpld: Remove unused include of acpi.h.
- nic78bx: Tidy up the ACPI ID table (remove ACPI_PTR, use
mod_devicetable.h, remove explicit driver_data initializer).
- tlc591xx: Convert text binding to YAML format, add child node
constraints, and fix typos/formatting in the example.
- qcom-lpg: Document the qcom,pm8937-pwm compatible string as a
fallback for qcom,pm8916-pwm.
* tag 'leds-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (23 commits)
leds: nic78bx: Tidy up ACPI ID table
leds: mlxcpld: Remove unused ACPI header inclusion
leds: rgb: leds-qcom-lpg: Fix calculation of best period Hi-Res PWMs
leds: rgb: leds-qcom-lpg: Fix pwm resolution max for Hi-Res PWMs
leds: rgb: leds-qcom-lpg: Fix pwm resolution max for normal PWMs
leds: Rename simple directory to simatic
leds: Kconfig: leds-st1202: Add select for required LEDS_TRIGGER_PATTERN
leds: leds-st1202: Spacing and proofreading editing
leds: leds-st1202: Initialize hardware before DT node child operations
leds: pwm-multicolor: Add check for fwnode_property_read_u32
leds: rgb: leds-qcom-lpg: Add support for 6-bit PWM resolution
leds: Fix LED_OFF brightness race
Revert "leds-pca955x: Remove the unused function pca95xx_num_led_regs()"
leds: st1202: Refactor st1202_led_set() to use !! operator for boolean conversion
dt-bindings: leds: qcom-lpg: Document PM8937 PWM compatible
leds: pca955x: Add HW blink support
leds: pca955x: Optimize probe LED selection
leds: pca955x: Use pointers to driver data rather than I2C client
leds: pca955x: Refactor with helper functions and renaming
dt-bindings: leds: Convert leds-tlc591xx.txt to yaml format
...
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The drivers contained in this directory are not simplistic.
Signed-off-by: Lee Jones <lee@kernel.org>
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This adds basic support for LEDs for the max77705 PMIC.
Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250123-starqltechn_integration_upstream-v17-7-8b06685b6612@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds
Pull LED updates from Lee Jones:
- Allow struct bin_attribute instances to be placed in read-only memory
for enhanced protection
- Fix a memory leak in the cht-wcove driver by using
devm_led_classdev_register()
- Fix an OF node reference leak in the netxbig driver
- Ensure PWM is disabled properly in pwm-multicolor suspend
- Add support for Texas Instruments LP8864, LP8864S, LP8866
LED-backlight drivers
- Add support for STMicroelectronics's LED1202 12-channel LED driver
- Convert LP8860 bindings to YAML format
- Add bindings for the TI LP8864/LP8866 LED drivers
- Add LED1202 LED controller bindings
- Fix path to color definitions in leds-class-multicolor.yaml
- Add pm660l compatible to qcom,spmi-flash-led bindings
- Extend cznic,turris-omnia-leds binding with interrupts property
- Add documentation for the STMicroelectronics LED1202 driver
- Add entry for AAEON UP board FPGA drivers in MAINTAINERS
- Fix a wrong format specifier in the ledtrig-activity driver
- Fix a bug in the lp8860 driver where only half of the EEPROM was
written
* tag 'leds-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (28 commits)
leds: triggers: Constify 'struct bin_attribute'
leds: cht-wcove: Use devm_led_classdev_register() to avoid memory leak
leds: lp8864: Add support for Texas Instruments LP8864, LP8864S, LP8866 LED-backlights
dt-bindings: leds: Convert LP8860 into YAML format
leds: Add LED1202 I2C driver
dt-bindings: leds: Add LED1202 LED Controller
Documentation:leds: Add leds-st1202.rst
leds: pwm-multicolor: Disable PWM when going to suspend
leds: netxbig: Fix an OF node reference leak in netxbig_leds_get_of_pdata()
turris-omnia-mcu-interface.h: Move macro definitions outside of enums
MAINTAINERS: Add entry for AAEON UP board FPGA drivers
leds: Add AAEON UP board LED driver
leds: trigger: netdev: Check offload ability on interface up
leds: turris-omnia: Use uppercase first letter in all comments
leds: turris-omnia: Use dev_err_probe() where appropriate
leds: turris-omnia: Inform about missing LED gamma correction feature in the MCU driver
platform: cznic: turris-omnia-mcu: Inform about missing LED panel brightness change interrupt feature
leds: turris-omnia: Notify sysfs on MCU global LEDs brightness change
leds: turris-omnia: Document driver private structures
dt-bindings: leds: cznic,turris-omnia-leds: Allow interrupts property
...
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LED-backlights
Add driver for TI LP8864, LP8864S, LP8866 4/6 channel LED-backlight drivers
with I2C interface.
Link: https://www.ti.com/lit/gpn/lp8864-q1
Link: https://www.ti.com/lit/gpn/lp8864s-q1
Link: https://www.ti.com/lit/gpn/lp8866-q1
Link: https://www.ti.com/lit/gpn/lp8866s-q1
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Link: https://lore.kernel.org/r/20241218210829.73191-3-alexander.sverdlin@siemens.com
Signed-off-by: Lee Jones <lee@kernel.org>
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The output current can be adjusted separately for each channel by 8-bit
analog (current sink input) and 12-bit digital (PWM) dimming control. The
LED1202 implements 12 low-side current generators with independent dimming
control.
Internal volatile memory allows the user to store up to 8 different patterns,
each pattern is a particular output configuration in terms of PWM
duty-cycle (on 4096 steps). Analog dimming (on 256 steps) is per channel but
common to all patterns. Each device tree LED node will have a corresponding
entry in /sys/class/leds with the label name. The brightness property
corresponds to the per channel analog dimming, while the patterns[1-8] to the
PWM dimming control.
Signed-off-by: Vicentiu Galanopulo <vicentiu.galanopulo@remote-tech.co.uk>
Link: https://lore.kernel.org/r/20241218183401.41687-4-vicentiu.galanopulo@remote-tech.co.uk
Signed-off-by: Lee Jones <lee@kernel.org>
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Add support for LEDs on AAEON UP boards. These leds are managed by the
onboard FPGA:
- UP boards: yellow, green, red
- UP Squared boards: blue, yellow, green, red
Based on the work done by Gary Wang <garywang@aaeon.com.tw>, largely
rewritten.
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20241211-aaeon-up-board-pinctrl-support-v1-2-24719be27631@bootlin.com
Signed-off-by: Lee Jones <lee@kernel.org>
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This adds a driver that connects to the qnap-mcu mfd driver and provides
access to the LEDs on it.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20241107114712.538976-6-heiko@sntech.de
Signed-off-by: Lee Jones <lee@kernel.org>
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Add support for Texas Instruments LP5569 LED driver.
Texas Instruments LP5569 is 9 channels chip with programmable engines.
It almost a copy of LP5523 with fundamental changes to regs order and
regs content.
Has difference in how the clock is handled and doesn't support detecting
clock time automatically, different handling for selftest and different
scheme for the status regs.
LED chip supports ENGINE and MUX to group LED and run precompiled code
with magic values to run patterns. This is loaded via the sysfs entry
and it's passed as a string of ASCII HEX char.
One some devices using this LED Controller (a NBG7815 Router) it was
found loading big precompiled pattern with up to 96 bytes of code. To
have support for this "extended" scenario, hardcode each engine to
support 4 pages of precompiled pattern (128 bytes of code) and 1 page
for each MUX. This gives plenty of space for any kind precompiled
pattern keeping simple logic for page handling of each engine and mux.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/20240626160027.19703-21-ansuelsmth@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
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The ChromeOS Embedded Controller exposes an LED control command.
Expose its functionality through the leds subsystem.
The LEDs are exposed as multicolor devices.
A hardware trigger, which is active by default, is provided to let the
EC itself take over control over the LED.
The driver is designed to be probed via the cros_ec mfd device.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20240613-cros_ec-led-v3-4-500b50f41e0f@weissschuh.net
Signed-off-by: Lee Jones <lee@kernel.org>
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The ExpressWire protocol is shared between at least KTD2692 and KTD2801
with slight differences such as timings and the former not having a
defined set of pulses for enabling the protocol (possibly because it
does not support PWM unlike KTD2801). Despite these differences the
ExpressWire handling code can be shared between the two, so in
preparation for adding KTD2801 support introduce a library implementing
this protocol.
Suggested-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Duje Mihanović <duje.mihanovic@skole.hr>
Link: https://lore.kernel.org/r/20240125-ktd2801-v5-1-e22da232a825@skole.hr
Signed-off-by: Lee Jones <lee@kernel.org>
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The MAX5970 is hot swap controller and has 4 indication LED.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
Link: https://lore.kernel.org/r/20231123132803.1107174-1-naresh.solanki@9elements.com
Signed-off-by: Lee Jones <lee@kernel.org>
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Some Allwinner sunxi SoCs, starting with the A100, contain an LED
controller designed to drive RGB LED pixels. Add a driver for it using
the multicolor LED framework, and with LEDs defined in the device tree.
Acked-by: Guo Ren <guoren@kernel.org>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20231029212738.7871-3-samuel@sholland.org
Signed-off-by: Lee Jones <lee@kernel.org>
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The PCA995x chips are I2C controlled LED drivers. Each chip has
up to 16 outputs, each one with an individual 8-bit resolution
PWM for brightness control.
Signed-off-by: Isai Gaspar <isaiezequiel.gaspar@nxp.com>
Signed-off-by: Marek Vasut <marex@denx.de> # Basically rewrite the driver
Link: https://lore.kernel.org/r/20230713163516.21644-2-marex@denx.de
Signed-off-by: Lee Jones <lee@kernel.org>
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Commit 36a87f371b7a ("leds: Add AW20xx driver") adds config LEDS_AW200XX
in drivers/leds/Kconfig, but then in drivers/leds/Makefile accidently
refers to CONFIG_LEDS_W200XX; note the missing A!
This typo makes it impossible to add the driver to a kernel build.
Fix this wrong config reference.
Fixes: 36a87f371b7a ("leds: Add AW20xx driver")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20230609100233.4111-1-lukas.bulwahn@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
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This commit adds support for AWINIC AW20036/AW20054/AW20072 LED driver.
This driver supports following AW200XX features:
- Individual 64-level DIM currents
Signed-off-by: Martin Kurbanov <mmkurbanov@sberdevices.ru>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230519130403.212479-3-mmkurbanov@sberdevices.ru
Signed-off-by: Lee Jones <lee@kernel.org>
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Add support for LEDs connected to the Intel Cherry Trail Whiskey Cove
PMIC. Charger and general-purpose LEDs are supported. Hardware blinking
is implemented, breathing is not.
This driver was tested with Lenovo Yoga Book notebook.
Changes by Hans de Goede (in response to review of v2):
- Since the PMIC is connected to the battery any changes we make to
the LED settings are permanent, even surviving reboot / poweroff.
Save LED1 register settings on probe() and if auto-/hw-control was
enabled on probe() restore the settings on remove() and shutdown().
- Delay switching LED1 to software control mode to first brightness write.
- Use dynamically allocated drvdata instead of a global drvdata variable.
- Ensure the LED is on when activating blinking.
- Fix CHT_WC_LED_EFF_BREATHING val ((3 << 1) rather then BIT(3)).
Link: https://lore.kernel.org/r/20190212205901.13037-2-jekhor@gmail.com
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Co-developed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230430195952.862527-2-hdegoede@redhat.com
Signed-off-by: Lee Jones <lee@kernel.org>
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The device provides 6 channels which can be individually
turned off and on but groups of two channels share a common brightness
register.
Limitation: The GPIO to enable the device is not used yet.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230419111806.1100437-3-andreas@kemnade.info
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds
Pull LED updates from Lee Jones:
"Removed Drivers:
- HTC ASIC3 LED
New Functionality:
- Provide generic led_get() which can be used by both DT and !DT
platforms
Fix-ups:
- Convert a bunch of I2C subsystem users to the new probing API
- Explicitly provide missing include files
- Make use of led_init_default_state_get() and rid the custom
variants
- Use simplified fwnode_device_is_compatible() API
- Provide some Device Tree additions / adaptions
- Fix some trivial spelling issues
Bug Fixes:
- Prevent device refcount leak during led_put() and of_led_get()
- Clear previous data from temporary led_pwm structure before
processing next child
- Fix Clang's warning about incompatible function types when using
devm_add_action*()"
* tag 'leds-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (41 commits)
leds: Remove ide-disk trigger
dt-bindings: leds: Add disk write/read and usb-host/usb-gadget
Documentation: leds: Correct spelling
dt-bindings: leds: Document Bluetooth and WLAN triggers
leds: Remove asic3 driver
leds: simatic-ipc-leds-gpio: Make sure we have the GPIO providing driver
leds: tca6507: Convert to use fwnode_device_is_compatible()
leds: syscon: Get rid of custom led_init_default_state_get()
leds: pm8058: Get rid of custom led_init_default_state_get()
leds: pca955x: Get rid of custom led_init_default_state_get()
leds: mt6360: Get rid of custom led_init_default_state_get()
leds: mt6323: Get rid of custom led_init_default_state_get()
leds: bcm6358: Get rid of custom led_init_default_state_get()
leds: bcm6328: Get rid of custom led_init_default_state_get()
leds: an30259a: Get rid of custom led_init_default_state_get()
leds: Move led_init_default_state_get() to the global header
leds: Add missing includes and forward declarations in leds.h
leds: is31fl319x: Wrap mutex_destroy() for devm_add_action_or_rest()
leds: turris-omnia: Convert to i2c's .probe_new()
leds: tlc591xx: Convert to i2c's .probe_new()
...
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Since ASIC3 MFD driver is removed, the LED support is also
obsolete.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230105134622.254560-25-arnd@kernel.org
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The s3c24xx platform is gone, so the led driver can be
removed as well.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The drivers/leds/rgb subdirectory is relatively fresh, so we move this
new PWM multi-color driver into it.
Signed-off-by: Sven Schwermer <sven.schwermer@disruptive-technologies.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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By allowing to group multiple monochrome PWM LEDs into multicolor LEDs,
all involved LEDs can be controlled in-sync. This enables using effects
using triggers, etc.
Signed-off-by: Sven Schwermer <sven.schwermer@disruptive-technologies.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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The Light Pulse Generator (LPG) is a PWM-block found in a wide range of
PMICs from Qualcomm. These PMICs typically comes with 1-8 LPG instances,
with their output being routed to various other components, such as
current sinks or GPIOs.
Each LPG instance can operate on fixed parameters or based on a shared
lookup-table, altering the duty cycle over time. This provides the means
for hardware assisted transitions of LED brightness.
A typical use case for the fixed parameter mode is to drive a PWM
backlight control signal, the driver therefor allows each LPG instance
to be exposed to the kernel either through the LED framework or the PWM
framework.
A typical use case for the LED configuration is to drive RGB LEDs in
smartphones etc, for which the driver supports multiple channels to be
ganged up to a MULTICOLOR LED. In this configuration the pattern
generators will be synchronized, to allow for multi-color patterns.
The idea of modelling this as a LED driver ontop of a PWM driver was
considered, but setting the properties related to patterns does not fit
in the PWM API. Similarly the idea of just duplicating the lower bits in
a PWM and LED driver separately was considered, but this would not allow
the PWM channels and LEDs to be configured on a per-board basis. The
driver implements the more complex LED interface, and provides a PWM
interface on the side of that, in the same driver.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Luca Weiss <luca@z3ntu.xyz>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Tested-by: Marijn Suijten <marijn.suijten@somainline.org>
[On the Sony Xperia Nile Discovery, SDM630]
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds
Pull LED updates from Pavel Machek:
"Nothing major is happening here"
* tag 'leds-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: lp55xx: initialise output direction from dts
ARM: dts: omap3-n900: Fix lp5523 for multi color
leds: ktd2692: Drop calling dev_of_node() in ktd2692_parse_dt
leds: lgm-sso: Get rid of duplicate of_node assignment
leds: tca6507: Get rid of duplicate of_node assignment
leds: leds-fsg: Drop FSG3 LED driver
leds: lp50xx: remove unused variable
dt-bindings: leds: Replace moonlight with indicator in mt6360 example
leds: led-core: Update fwnode with device_set_node
leds: tca6507: use swap() to make code cleaner
leds: Add mt6360 driver
dt-bindings: leds: Add bindings for MT6360 LED
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The board file using this driver has been deleted and the
FSG3 LEDs can be modeled using a system controller and some
register bit LEDs in the device tree so this driver is no
longer needed.
Reported-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Krzysztof Hałasa <khalasa@piap.pl>
Cc: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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This driver adds initial support for several devices from Siemens. It is
based on a platform driver introduced in an earlier commit.
One of the supported machines has GPIO connected LEDs, here we poke GPIO
memory directly because pinctrl does not come up.
Signed-off-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Link: https://lore.kernel.org/r/20211213120502.20661-3-henning.schild@siemens.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.
Cc: Ingi Kim <ingi2.kim@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.
Cc: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.
Cc: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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We created a subdirectory for LED drivers that depend on
CONFIG_LEDS_CLASS_FLASH, and this driver does so let's
move it there.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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Remove unnecessary Kconfig symbol LEDS_BLINK
Improve Kconfig help text to make it more useful.
Signed-off-by: Rahul Tanwar <rtanwar@maxlinear.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds
Pull LED updates from Pavel Machek:
"Besides the usual fixes and new drivers, we are changing CLASS_FLASH
to return success to make it easier to work with V4L2 stuff disabled,
and we are getting rid of enum that should have been plain integer
long time ago. I'm slightly nervous about potential warnings, but it
needed to be fixed at some point"
* tag 'leds-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: lp50xx: Get rid of redundant explicit casting
leds: lp50xx: Update headers block to reflect reality
leds: lp50xx: Get rid of redundant check in lp50xx_enable_disable()
leds: lp50xx: Reduce level of dereferences
leds: lp50xx: Switch to new style i2c-driver probe function
leds: lp50xx: Don't spam logs when probe is deferred
leds: apu: extend support for PC Engines APU1 with newer firmware
leds: flash: Fix multicolor no-ops registration by return 0
leds: flash: Add flash registration with undefined CONFIG_LEDS_CLASS_FLASH
leds: lgm: Add LED controller driver for LGM SoC
dt-bindings: leds: Add bindings for Intel LGM SoC
leds: led-core: Get rid of enum led_brightness
leds: gpio: Set max brightness to 1
leds: lm3533: Switch to using the new API kobj_to_dev()
leds: ss4200: simplify the return expression of register_nasgpio_led()
leds: Use DEVICE_ATTR_{RW, RO, WO} macros
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Parallel to serial conversion, which is also called SSO controller,
can drive external shift register for LED outputs, reset or
general purpose outputs.
This driver enables LED support for Serial Shift Output Controller (SSO).
Signed-off-by: Amireddy Mallikarjuna reddy <mallikarjunax.reddy@linux.intel.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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This adds a driver for the Richtek RT8515 dual channel
torch/flash white LED driver.
This LED driver is found in some mobile phones from
Samsung such as the GT-S7710 and GT-I8190.
A V4L interface is added.
We do not have a proper datasheet for the RT8515 but
it turns out that RT9387A has a public datasheet and
is essentially the same chip. We designed the driver
in accordance with this datasheet. The day someone
needs to drive a RT9387A this driver can probably
easily be augmented to handle that chip too.
Sakari Ailus, Pavel Machek and Andy Shevchenko helped
significantly in getting this driver right.
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: newbytee@protonmail.com
Cc: Stephan Gerhold <stephan@gerhold.net>
Cc: linux-media@vger.kernel.org
Cc: phone-devel@vger.kernel.org
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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Acer Iconia Tab A500 is an Android tablet device which has two LEDs
embedded into the Power Button. Orange LED indicates "battery charging"
status and white LED indicates "wake-up/charge-done" status. The new LED
driver provides control over both LEDs to userspace.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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Introduce the LP5036/30/24/18/12/9 RGB LED driver.
The difference in these parts are the number of
LED outputs where the:
LP5036 can control 36 LEDs
LP5030 can control 30 LEDs
LP5024 can control 24 LEDs
LP5018 can control 18 LEDs
LP5012 can control 12 LEDs
LP5009 can control 9 LEDs
The device has the ability to group LED outputs into control banks
so that multiple LED banks can be controlled with the same mixing and
brightness. Or the LED outputs can also be controlled independently.
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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This adds basic support for LEDs on the front side of CZ.NIC's Turris
Omnia router.
There are 12 RGB LEDs. The controller supports HW triggering mode for
the LEDs, but this driver does not support it yet, and sets all the LEDs
defined in device-tree into SW mode upon probe.
This driver uses the multicolor LED framework.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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Introduce a multicolor class that groups colored LEDs
within a LED node.
The multicolor class groups monochrome LEDs and allows controlling two
aspects of the final combined color: hue and lightness. The former is
controlled via the intensity file and the latter is controlled
via brightness file.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
[squashed leds: multicolor: Fix camel case in documentation in]
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This commit adds support for AWINIC AW2013 3-channel LED driver.
The chip supports 3 PWM channels and is controlled with I2C.
Signed-off-by: Nikita Travkin <nikitos.tr@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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Add a driver for the SGMICRO SGM3140 Buck/Boost Charge Pump LED driver.
This device is controlled by two GPIO pins, one for enabling and the
second one for switching between torch and flash mode.
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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This adds support for controlling the LEDs attached to the Embedded
Controller on a Dell Wyse 3020 "Ariel" board.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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Sort Makefile entries to reduce risk of rejects.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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This patch implemenets a driver to support the front panel LEDs of
SGI Octane (IP30) workstations.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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This driver adds support for the LED operational mode of the
tps6105x MFD device.
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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This patch adds a LED class driver for the LEDs found on
the Crane Merchandising System EL15203000 LEDs board
(aka RED LEDs board).
Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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Merge immutable branch between LEDs, MFD and REGULATOR due to
TI LMU LED support rework and introduction of two new drivers
with DT bindings.
* tag 'ti-lmu-led-drivers':
leds: lm36274: Introduce the TI LM36274 LED driver
dt-bindings: leds: Add LED bindings for the LM36274
regulator: lm363x: Add support for LM36274
mfd: ti-lmu: Add LM36274 support to the ti-lmu
dt-bindings: mfd: Add lm36274 bindings to ti-lmu
leds: lm3697: Introduce the lm3697 driver
mfd: ti-lmu: Remove support for LM3697
dt-bindings: ti-lmu: Modify dt bindings for the LM3697
leds: TI LMU: Add common code for TI LMU devices
dt-bindings: mfd: LMU: Add ti,brightness-resolution
dt-bindings: mfd: LMU: Add the ramp up/down property
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