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2024-03-07backlight: hx8357: Make use of dev_err_probe()Andy Shevchenko1-8/+4
Simplify the error handling in probe function by switching from dev_err() to dev_err_probe(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://lore.kernel.org/r/20240201144951.294215-4-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones <lee@kernel.org>
2024-03-07backlight: hx8357: Move OF table closer to its consumerAndy Shevchenko1-13/+13
Move OF table near to the user. While at it, drop comma at terminator entry. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://lore.kernel.org/r/20240201144951.294215-3-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones <lee@kernel.org>
2024-03-07backlight: hx8357: Make use of device propertiesAndy Shevchenko1-6/+8
Convert the module to be property provider agnostic and allow it to be used on non-OF platforms. Include mod_devicetable.h explicitly to replace the dropped of.h which included mod_devicetable.h indirectly. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Link: https://lore.kernel.org/r/20240201144951.294215-2-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones <lee@kernel.org>
2024-03-07backlight: mp3309c: Use pwm_apply_might_sleep()Sean Young1-2/+2
pwm_apply_state() is deprecated since commit c748a6d77c06a ("pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()"). This is the final user in the tree. Signed-off-by: Sean Young <sean@mess.org> Tested-by: Flavio Suligoi <f.suligoi@asem.it> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Link: https://lore.kernel.org/r/20240128154905.407302-1-sean@mess.org Signed-off-by: Lee Jones <lee@kernel.org>
2024-03-07backlight: ktz8866: Correct the check for of_property_read_u32Jianhua Lu1-3/+3
of_property_read_u32 returns 0 when success, so reverse the return value to get the true value. Fixes: f8449c8f7355 ("backlight: ktz8866: Add support for Kinetic KTZ8866 backlight") Signed-off-by: Jianhua Lu <lujianhua000@gmail.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Link: https://lore.kernel.org/r/20240129122829.16248-1-lujianhua000@gmail.com Signed-off-by: Lee Jones <lee@kernel.org>
2024-03-07backlight: hx8357: Fix potential NULL pointer dereferenceAndy Shevchenko1-4/+6
The "im" pins are optional. Add missing check in the hx8357_probe(). Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/r/642e1230-3358-4006-a17f-3f297897ae74@moroto.mountain Fixes: 7d84a63a39b7 ("backlight: hx8357: Convert to agnostic GPIO API") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Link: https://lore.kernel.org/r/20240114143921.550736-1-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones <lee@kernel.org>
2024-03-07leds: expresswire: Don't use "proxy" headersAndy Shevchenko2-1/+7
Update header inclusions to follow IWYU (Include What You Use) principle. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Duje Mihanović <duje.mihanovic@skole.hr> Link: https://lore.kernel.org/r/20240223203010.881065-1-andriy.shevchenko@linux.intel.com Signed-off-by: Lee Jones <lee@kernel.org>
2024-03-07leds: ktd2692: Add GPIOLIB dependencyArnd Bergmann1-0/+1
The expresswire module requires gpiolib, so anything selecting it also needs this dependency: WARNING: unmet direct dependencies detected for LEDS_EXPRESSWIRE Depends on [n]: NEW_LEDS [=y] && GPIOLIB [=n] Selected by [y]: - LEDS_KTD2692 [=y] && NEW_LEDS [=y] && LEDS_CLASS_FLASH [=y] && OF [=y] Fixes: e59a15af7aa6 ("leds: ktd2692: Convert to use ExpressWire library") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Link: https://lore.kernel.org/r/20240213165602.2230970-1-arnd@kernel.org Signed-off-by: Lee Jones <lee@kernel.org>
2024-03-07backlight: ktd2801: Make timing struct staticDuje Mihanović1-1/+1
The struct containing the KTD2801 timing can be made static as it's not referenced outside the KTD2801 driver. Do this to prevent sparse complaints. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202402100625.M0RkJhMh-lkp@intel.com/ Signed-off-by: Duje Mihanović <duje.mihanovic@skole.hr> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Link: https://lore.kernel.org/r/20240210-ktd2801-static-v1-1-90ad2e2e8483@skole.hr Signed-off-by: Lee Jones <lee@kernel.org>
2024-03-07backlight: Add Kinetic KTD2801 Backlight supportDuje Mihanović4-0/+142
KTD2801 is a LED backlight driver IC found in samsung,coreprimevelte. The brightness can be set using PWM or the ExpressWire protocol. Add support for the KTD2801. 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-v5-4-e22da232a825@skole.hr Signed-off-by: Lee Jones <lee@kernel.org>