linux-stable/drivers/devfreq
Leonard Crestez 27dbc542f6 PM / devfreq: Use PM QoS for sysfs min/max_freq
Switch the handling of min_freq and max_freq from sysfs to use the
dev_pm_qos_request interface.

Since PM QoS handles frequencies as kHz this change reduces the
precision of min_freq and max_freq. This shouldn't introduce problems
because frequencies which are not an integer number of kHz are likely
not an integer number of Hz either.

Try to ensure compatibility by rounding min values down and rounding
max values up.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
[cw00.choi: Return -EAGAIN instead of -EINVAL if dev_pm_qos is inactive]
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2019-12-09 12:19:16 +09:00
..
event PM / devfreq: exynos-ppmu: remove useless assignment 2019-11-06 12:04:00 +09:00
devfreq-event.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
devfreq.c PM / devfreq: Use PM QoS for sysfs min/max_freq 2019-12-09 12:19:16 +09:00
exynos-bus.c PM / devfreq: exynos-bus: Convert to use dev_pm_opp_set_rate() 2019-08-25 12:46:48 +09:00
governor.h PM / devfreq: Add new interrupt_driven flag for governors 2019-11-06 12:04:01 +09:00
governor_passive.c PM / devfreq: passive: fix compiler warning 2019-08-26 21:37:37 +09:00
governor_performance.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
governor_powersave.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
governor_simpleondemand.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
governor_userspace.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
Kconfig PM / devfreq: tegra20: add COMMON_CLK dependency 2019-08-24 20:11:12 +09:00
Makefile PM / devfreq: Introduce driver for NVIDIA Tegra20 2019-08-24 20:11:12 +09:00
rk3399_dmc.c PM / devfreq: rk3399_dmc: Fix spelling typo 2019-08-24 20:11:12 +09:00
tegra20-devfreq.c PM / devfreq: Introduce driver for NVIDIA Tegra20 2019-08-24 20:11:12 +09:00
tegra30-devfreq.c PM / devfreq: tegra30: Tune up MCCPU boost-down coefficient 2019-11-06 12:04:01 +09:00