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Ondrej Jirman e70290bb1f pwm: sun4i: Fix incorrect calculation of duty_cycle/period 
[ Upstream commit 50cc7e3e4f26e3bf5ed74a8d061195c4d2161b8b ]

Since 5.4-rc1, pwm_apply_state calls ->get_state after ->apply
if available, and this revealed an issue with integer precision
when calculating duty_cycle and period for the currently set
state in ->get_state callback.

This issue manifested in broken backlight on several Allwinner
based devices.

Previously this worked, because ->apply updated the passed state
directly.

Fixes: deb9c462f4e53 ("pwm: sun4i: Don't update the state for the caller of pwm_apply_state")
Signed-off-by: Ondrej Jirman <megous@megous.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-26 10:01:04 +01:00
..
core.c
Revert "pwm: Let pwm_get_state() return the last implemented state"
2019-10-21 16:48:52 +02:00
Kconfig
pwm: Changes for v5.4-rc1
2019-09-27 12:19:47 -07:00
Makefile
pwm: sprd: Add Spreadtrum PWM support
2019-09-21 01:15:48 +02:00
pwm-ab8500.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194
2019-05-30 11:29:22 -07:00
pwm-atmel-hlcdc.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-atmel-tcb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194
2019-05-30 11:29:22 -07:00
pwm-atmel.c
pwm: atmel: Consolidate driver data initialization
2019-09-21 03:25:11 +02:00
pwm-bcm2835.c
pwm: bcm2835: Suppress error message during deferred probe
2019-09-21 01:24:11 +02:00
pwm-bcm-iproc.c
pwm: bcm-iproc: Prevent unloading the driver module while in use
2019-11-08 18:38:06 +01:00
pwm-bcm-kona.c
pwm: bcm-kona: Update macros to remove braces around numbers
2019-03-04 12:52:49 +01:00
pwm-berlin.c
pwm: Clear chip_data in pwm_put()
2019-05-09 17:09:54 +02:00
pwm-brcmstb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
pwm-clps711x.c
pwm: clps711x: Switch to SPDX identifier
2018-12-24 12:06:56 +01:00
pwm-crc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
pwm-cros-ec.c
pwm: Changes for v5.4-rc1
2019-09-27 12:19:47 -07:00
pwm-ep93xx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
pwm-fsl-ftm.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-hibvt.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-img.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 178
2019-05-30 11:29:19 -07:00
pwm-imx1.c
pwm: imx: Split into two drivers
2019-01-16 08:45:33 +01:00
pwm-imx27.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-imx-tpm.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-jz4740.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-lp3943.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372
2019-06-05 17:37:10 +02:00
pwm-lpc18xx-sct.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 178
2019-05-30 11:29:19 -07:00
pwm-lpc32xx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372
2019-06-05 17:37:10 +02:00
pwm-lpss-pci.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pwm-lpss-platform.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pwm-lpss.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-lpss.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pwm-mediatek.c
pwm: mediatek: Add MT7629 compatible string
2019-09-26 13:27:50 +02:00
pwm-meson.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-mtk-disp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
pwm-mxs.c
pwm: mxs: Use devm_platform_ioremap_resource() to simplify code
2019-09-21 00:26:10 +02:00
pwm-omap-dmtimer.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pwm-pca9685.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
pwm-puv3.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pwm-pxa.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pwm-rcar.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-renesas-tpu.c
pwm: Use SPDX identifier for Renesas drivers
2018-10-12 13:35:45 +02:00
pwm-rockchip.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-samsung.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 178
2019-05-30 11:29:19 -07:00
pwm-sifive.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-spear.c
pwm: drop owner assignment from platform_drivers
2014-10-20 16:21:28 +02:00
pwm-sprd.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-sti.c
pwm: Remove dev_err() usage after platform_get_irq()
2019-09-21 00:58:35 +02:00
pwm-stm32-lp.c
pwm: stm32-lp: Add check in case requested period cannot be achieved
2019-09-21 03:25:10 +02:00
pwm-stm32.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
pwm-stmpe.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pwm-sun4i.c
pwm: sun4i: Fix incorrect calculation of duty_cycle/period
2020-01-26 10:01:04 +01:00
pwm-tegra.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
pwm-tiecap.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
2019-05-24 17:36:45 +02:00
pwm-tiehrpwm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
2019-05-24 17:36:45 +02:00
pwm-tipwmss.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
pwm-twl-led.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
pwm-twl.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
pwm-vt8500.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282
2019-06-05 17:36:37 +02:00
pwm-zx.c
pwm: Ensure pwm_apply_state() doesn't modify the state argument
2019-09-21 03:25:10 +02:00
sysfs.c
pwm: Changes for v5.3-rc1
2019-07-09 08:57:45 -07:00