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2020-03-18backlight: pwm_bl: Switch to full GPIO descriptorLinus Walleij
The PWM backlight still supports passing a enable GPIO line as platform data using the legacy <linux/gpio.h> API. It turns out that ever board using this mechanism except one is pass .enable_gpio = -1. So we drop all these cargo-culted -1's from all instances of this platform data in the kernel. The remaning board, Palm TC, is converted to pass a machine descriptior table with the "enable" GPIO instead, and delete the platform data entry for enable_gpio and the code handling it and things should work smoothly with the new API. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Krzysztof Kozlowski <krzk@kernel.org Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-01-03ARM: S3C64XX: Add SPDX license identifiersKrzysztof Kozlowski
Replace GPL license statements with SPDX license identifiers (GPL-2.0 and GPL-2.0+). Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
2017-10-04ARM: s3c64xx: Delete an unnecessary return statement in samsung_bl_setMarkus Elfring
Fix checkpatch warning: WARNING: void function return statements are not generally useful Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> [krzk: Rewrite commit message] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2017-10-04ARM: s3c64xx: Remove printk for failed memory allocation in samsung_bl_setMarkus Elfring
Omit an extra message for a memory allocation failure in samsung_bl_set(). This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2015-10-13ARM: S3C64XX: Use PWM lookup table for smdk6410Thierry Reding
Use a PWM lookup table to provide the PWM to the pwm-backlight device. The driver has a legacy code path that is required only because boards still use the legacy method of requesting PWMs by global ID. Replacing these usages allows that legacy fallback to be removed. Signed-off-by: Thierry Reding <thierry.reding@gmail.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-07-30ARM: SAMSUNG: local backlight header in mach-s3c64xxKukjin Kim
This patch moves backlight header file into mach-s3c64xx. Because it is not used for others except mach-s3c64xx. Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-07-30ARM: SAMSUNG: make local dev-backlight in mach-s3c64xxKukjin Kim
This patch moves dev-backlight from plat-samsung into mach-s3c64xx because it is used for only s3c64xx no other platforms. Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>