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Date: Mon, 7 Oct 2013 13:37:34 +0200 From: Thierry Reding <thierry.reding@...il.com> To: Thierry Reding <thierry.reding@...il.com> Cc: Tony Lindgren <tony@...mide.com>, Eric Miao <eric.y.miao@...il.com>, Haojian Zhuang <haojian.zhuang@...il.com>, Marek Vasut <marek.vasut@...il.com>, Ben Dooks <ben-linux@...ff.org>, Kukjin Kim <kgene.kim@...sung.com>, Guan Xuetao <gxt@...c.pku.edu.cn>, devicetree@...r.kernel.org, linux-pwm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH v2 00/12] pwm-backlight: Add GPIO and power supply support This series adds the ability to specify a GPIO and a power supply to enable a backlight. Patch 1 adds some blank lines to make the code look less cluttered in various places. Patch 2 refactors the power on and power off sequences into separate functions in preparation for subsequent patches. Patch 3 adds functionality to track the on/off state of the backlight. This is required by subsequent patches to make sure that enabling and disabling used resources remains balanced. Patch 4 adds an optional GPIO to enable a backlight. This patch only includes the field within the platform data so that it can be properly setup before actually being put to use. Patches 5 to 9 convert all users of the pwm-backlight driver to use the new field. For most of them, this just initializes the field to -1, marking the field as unused. Patch 10 uses the new field within the pwm-backlight driver and at the same time allows it to be parsed from device tree. Patch 11 implements support for an optional power supply. This relies on the regulator core to return a dummy regulator when no supply has been otherwise setup so the driver doesn't have to handle that specially nor require all users to be updated. Patch 12 adds a way to keep a backlight turned off at boot. This is useful when hooking up a backlight with a subsystem such as DRM which has more explicit semantics as to when a backlight should be turned on. Due to the dependencies within the series, I propose to take all these patches through the PWM tree, so I'll need acks from OMAP, PXA, Samsung, shmobile and Unicore32 maintainers. Thierry Thierry Reding (12): pwm-backlight: Improve readability pwm-backlight: Refactor backlight power on/off pwm-backlight: Track enable state pwm-backlight: Add optional enable GPIO ARM: OMAP: Initialize PWM backlight enable_gpio field ARM: pxa: Initialize PWM backlight enable_gpio field ARM: SAMSUNG: Initialize PWM backlight enable_gpio field ARM: shmobile: Initialize PWM backlight enable_gpio field unicore32: Initialize PWM backlight enable_gpio field pwm-backlight: Use new enable_gpio field pwm-backlight: Add power supply support pwm-backlight: Allow backlight to remain disabled on boot .../bindings/video/backlight/pwm-backlight.txt | 8 ++ arch/arm/mach-omap2/board-zoom-peripherals.c | 1 + arch/arm/mach-pxa/cm-x300.c | 1 + arch/arm/mach-pxa/colibri-pxa270-income.c | 1 + arch/arm/mach-pxa/ezx.c | 1 + arch/arm/mach-pxa/hx4700.c | 1 + arch/arm/mach-pxa/lpd270.c | 1 + arch/arm/mach-pxa/magician.c | 1 + arch/arm/mach-pxa/mainstone.c | 1 + arch/arm/mach-pxa/mioa701.c | 1 + arch/arm/mach-pxa/palm27x.c | 1 + arch/arm/mach-pxa/palmtc.c | 35 +---- arch/arm/mach-pxa/palmte2.c | 1 + arch/arm/mach-pxa/pcm990-baseboard.c | 1 + arch/arm/mach-pxa/raumfeld.c | 1 + arch/arm/mach-pxa/tavorevb.c | 2 + arch/arm/mach-pxa/viper.c | 1 + arch/arm/mach-pxa/z2.c | 2 + arch/arm/mach-pxa/zylonite.c | 1 + arch/arm/mach-s3c24xx/mach-h1940.c | 1 + arch/arm/mach-s3c24xx/mach-rx1950.c | 1 + arch/arm/mach-s3c64xx/mach-crag6410.c | 1 + arch/arm/mach-s3c64xx/mach-hmt.c | 1 + arch/arm/mach-s3c64xx/mach-smartq.c | 1 + arch/arm/mach-s3c64xx/mach-smdk6410.c | 1 + arch/arm/mach-s5p64x0/mach-smdk6440.c | 1 + arch/arm/mach-s5p64x0/mach-smdk6450.c | 1 + arch/arm/mach-s5pc100/mach-smdkc100.c | 1 + arch/arm/mach-s5pv210/mach-smdkv210.c | 1 + arch/arm/mach-shmobile/board-armadillo800eva.c | 1 + arch/arm/plat-samsung/dev-backlight.c | 5 + arch/unicore32/kernel/puv3-nb0916.c | 1 + drivers/video/backlight/pwm_bl.c | 149 ++++++++++++++++----- include/linux/pwm_backlight.h | 7 + 34 files changed, 171 insertions(+), 64 deletions(-) -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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