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Date: Wed, 6 Oct 2010 21:29:11 +0530 From: Arun Murthy <arun.murthy@...ricsson.com> To: <lars@...afoo.de>, <akpm@...ux-foundation.org>, <kernel@...gutronix.de>, <philipp.zabel@...il.com>, <robert.jarzmik@...e.fr>, <marek.vasut@...il.com>, <eric.y.miao@...il.com>, <rpurdie@...ys.net>, <sameo@...ux.intel.com>, <kgene.kim@...sung.com>, <linux-omap@...r.kernel.org> Cc: <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, <linux-mips@...ux-mips.org>, <STEricsson_nomadik_linux@...t.st.com>, <arun.murthy@...ricsson.com>, <bgat@...lgatliff.com>, <khilman@...prootsystems.com> Subject: [PATCHv3 0/7] PWM core driver for pwm based led and backlight driver PWM core driver for pwm based led and backlight driver. The intention of the pwm core driver is not to break the build if two or more pwm drivers are enabled. Align the existing pwm drivers to make use of the pwm core driver Changes v2 - v3 Replaced the use of linked list to monitor the registered pwm devices with class. By using this an interface to the user space through sysfs can be provided for debugging purpose. Further to Kelvin Hilman comments on v2 patch set: Had a close look at the Bill patch set. Functionality wise my patch set lags the callback implementation and the synchronize. Either Bill can send a patch on top of this to implement the same or I can do that adding credits to Bill. Apart from the above said some more are the handling of duty cycle. It is a parameter in function pwm_config() in my patch set. Hence there is no need to have seperate function to set/get the same. Reason for having this as a parameter in pwm_config() is: the duty cycle, period maximum intensity are part of the platform data. Hence manipulation of these is done in the client driver(ref: pwm based led and backlight driver). I have provided a patch(backlight: add low threshold to pwm backlight) for handling this in the pwm backlight (one such client) which is now in Andrew's mm tree. TODO: Align Atmel pwm driver with my pwm core driver patch set. Arun Murthy (7): pwm: Add pwm core driver backlight:pwm: add an element 'name' to platform data leds: pwm: add a new element 'name' to platform data pwm: Align existing pwm drivers with pwm-core driver platform: Update the pwm based led and backlight platform data pwm: move existing pwm driver to drivers/pwm pwm: Modify backlight and led Kconfig aligning to pwm core 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 | 1 + 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-s3c2410/mach-h1940.c | 1 + arch/arm/mach-s3c2440/mach-rx1950.c | 1 + arch/arm/mach-s3c64xx/mach-hmt.c | 1 + arch/arm/mach-s3c64xx/mach-smartq.c | 1 + arch/arm/plat-mxc/pwm.c | 166 +++++++++------------ arch/arm/plat-pxa/pwm.c | 210 ++++++++++++-------------- arch/arm/plat-samsung/pwm.c | 235 +++++++++++++---------------- arch/mips/jz4740/pwm.c | 2 +- drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/leds/Kconfig | 2 +- drivers/leds/leds-pwm.c | 4 +- drivers/mfd/Kconfig | 9 - drivers/mfd/Makefile | 1 - drivers/mfd/twl-core.c | 13 ++ drivers/mfd/twl6030-pwm.c | 163 -------------------- drivers/misc/Kconfig | 9 - drivers/misc/Makefile | 1 - drivers/misc/ab8500-pwm.c | 168 -------------------- drivers/pwm/Kconfig | 35 +++++ drivers/pwm/Makefile | 4 + drivers/pwm/pwm-ab8500.c | 157 +++++++++++++++++++ drivers/pwm/pwm-core.c | 130 ++++++++++++++++ drivers/pwm/pwm-twl6040.c | 196 ++++++++++++++++++++++++ drivers/video/backlight/Kconfig | 2 +- drivers/video/backlight/pwm_bl.c | 4 +- include/linux/leds_pwm.h | 3 +- include/linux/pwm.h | 31 ++++- include/linux/pwm_backlight.h | 1 + 46 files changed, 876 insertions(+), 696 deletions(-) delete mode 100644 drivers/mfd/twl6030-pwm.c delete mode 100644 drivers/misc/ab8500-pwm.c create mode 100644 drivers/pwm/Kconfig create mode 100644 drivers/pwm/Makefile create mode 100644 drivers/pwm/pwm-ab8500.c create mode 100644 drivers/pwm/pwm-core.c create mode 100644 drivers/pwm/pwm-twl6040.c -- 1.7.2.dirty -- 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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