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a8c3862551
linux/drivers/pwm
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Boris Brezillon a8c3862551 pwm: Keep PWM state in sync with hardware state 
Before the introduction of pwm_args, the core was resetting the PWM
period and polarity states to the reference values (those provided
through the DT, a PWM lookup table or hardcoded in the driver).

Now that all PWM users are correctly using pwm_args to configure their
PWM device, we can safely remove the pwm_apply_args() call in pwm_get()
and of_pwm_get().

We can also get rid of the pwm_set_period() call in pwm_apply_args(),
because PWM users are now directly using pargs->period instead of
pwm_get_period(). By doing that we avoid messing with the current PWM
period.

The only remaining bit in pwm_apply_args() is the initial polarity
setting, and it should go away when all PWM users have been patched to
use the atomic API (with this API the polarity will be set along with
other PWM arguments when configuring the PWM).

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2016-05-17 14:47:30 +02:00
..
core.c pwm: Keep PWM state in sync with hardware state 2016-05-17 14:47:30 +02:00
Kconfig pwm: rcar: Depend on ARCH_RENESAS instead of ARCH_SHMOBILE 2016-03-23 17:11:44 +01:00
Makefile pwm: Add PWM driver for OMAP using dual-mode timers 2015-12-16 17:25:37 +01:00
pwm-ab8500.c pwm: drop owner assignment from platform_drivers 2014-10-20 16:21:28 +02:00
pwm-atmel-hlcdc.c pwm: atmel-hlcdc: add sama5d2 SoC support. 2015-10-06 16:07:28 +02:00
pwm-atmel-tcb.c misc: atmel_tclib: get and use slow clock 2015-10-06 12:33:14 +02:00
pwm-atmel.c pwm: Make use of pwm_get_xxx() helpers where appropriate 2015-07-20 09:53:22 +02:00
pwm-bcm2835.c pwm: bcm2835: Fix email address specification 2015-12-16 16:45:32 +01:00
pwm-bcm-kona.c pwm: kona: Modify settings application sequence 2015-08-17 16:19:41 +02:00
pwm-berlin.c pwm: Add support for the Berlin PWM controller 2015-10-06 09:40:44 +02:00
pwm-bfin.c pwm: drop owner assignment from platform_drivers 2014-10-20 16:21:28 +02:00
pwm-brcmstb.c pwm: brcmstb: Fix check of devm_ioremap_resource() return code 2016-03-23 17:11:45 +01:00
pwm-clps711x.c pwm: Introduce the pwm_args concept 2016-05-03 13:44:37 +02:00
pwm-crc.c pwm: Use pwm_get/set_xxx() helpers where appropriate 2016-05-17 14:44:59 +02:00
pwm-ep93xx.c pwm: Add the pwm_is_enabled() helper 2015-07-20 09:46:06 +02:00
pwm-fsl-ftm.c pwm: fsl-ftm: Fix clock enable/disable when using PM 2015-12-16 16:54:32 +01:00
pwm-img.c pwm: img: Test clock rate to avoid division by 0 2016-03-23 17:11:02 +01:00
pwm-imx.c pwm: Make use of pwm_get_xxx() helpers where appropriate 2015-07-20 09:53:22 +02:00
pwm-jz4740.c pwm: drop owner assignment from platform_drivers 2014-10-20 16:21:28 +02:00
pwm-lp3943.c pwm: drop owner assignment from platform_drivers 2014-10-20 16:21:28 +02:00
pwm-lpc18xx-sct.c pwm: Use pwm_get/set_xxx() helpers where appropriate 2016-05-17 14:44:59 +02:00
pwm-lpc32xx.c pwm: lpc32xx: return ERANGE, if requested period is not supported 2015-12-16 17:01:06 +01:00
pwm-lpss-pci.c pwm: lpss: Add support for runtime PM 2015-11-06 14:34:13 +01:00
pwm-lpss-platform.c pwm: lpss: Add support for runtime PM 2015-11-06 14:34:13 +01:00
pwm-lpss.c pwm: lpss: Rework the sequence of programming PWM_SW_UPDATE 2015-12-16 16:52:09 +01:00
pwm-lpss.h pwm: lpss: Update PWM setting for Broxton 2015-12-16 16:45:38 +01:00
pwm-mtk-disp.c pwm: Add MediaTek display PWM driver support 2015-10-06 16:07:30 +02:00
pwm-mxs.c pwm: Add the pwm_is_enabled() helper 2015-07-20 09:46:06 +02:00
pwm-omap-dmtimer.c pwm: Use pwm_get/set_xxx() helpers where appropriate 2016-05-17 14:44:59 +02:00
pwm-pca9685.c pwm-pca9685: enable ACPI device found on Galileo Gen2 2015-11-06 14:14:19 +01:00
pwm-puv3.c pwm: drop owner assignment from platform_drivers 2014-10-20 16:21:28 +02:00
pwm-pxa.c pwm: Introduce the pwm_args concept 2016-05-03 13:44:37 +02:00
pwm-rcar.c pwm: rcar: Make use of pwm_is_enabled() 2016-05-17 14:44:57 +02:00
pwm-renesas-tpu.c pwm: Add the pwm_is_enabled() helper 2015-07-20 09:46:06 +02:00
pwm-rockchip.c pwm: Make use of pwm_get_xxx() helpers where appropriate 2015-07-20 09:53:22 +02:00
pwm-samsung.c pwm: samsung: Use MODULE_DEVICE_TABLE() to include OF modalias 2015-05-21 15:56:53 +02:00
pwm-spear.c pwm: drop owner assignment from platform_drivers 2014-10-20 16:21:28 +02:00
pwm-sti.c pwm: sti: Maintain a bitmap of configured devices 2015-01-30 12:16:03 +01:00
pwm-sun4i.c pwm: Use pwm_get/set_xxx() helpers where appropriate 2016-05-17 14:44:59 +02:00
pwm-tegra.c pwm: Add the pwm_is_enabled() helper 2015-07-20 09:46:06 +02:00
pwm-tiecap.c pwm: Add the pwm_is_enabled() helper 2015-07-20 09:46:06 +02:00
pwm-tiehrpwm.c pwm: Add the pwm_is_enabled() helper 2015-07-20 09:46:06 +02:00
pwm-tipwmss.c pwm: drop owner assignment from platform_drivers 2014-10-20 16:21:28 +02:00
pwm-tipwmss.h pwm: davinci: Add Kconfig support for ECAP & EHRPWM devices 2013-03-22 11:35:20 +01:00
pwm-twl-led.c pwm: twl-led: Include linux/of.h header 2013-10-08 15:45:44 +02:00
pwm-twl.c pwm: twl: Really disable twl6030 PWMs 2014-05-08 23:41:47 +02:00
pwm-vt8500.c pwm: drop owner assignment from platform_drivers 2014-10-20 16:21:28 +02:00
sysfs.c pwm: Get rid of pwm->lock 2016-05-17 14:44:59 +02:00