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authorLeonard Crestez <leonard.crestez@nxp.com>2019-12-05 12:05:07 +0200
committerChanwoo Choi <cw00.choi@samsung.com>2019-12-09 12:19:16 +0900
commit27dbc542f651ed09de910f274b32634904103774 (patch)
treea74b9e5196e4c460a8d5ddc130011d84e9d9bae4 /lib/Makefile
parent05d7ae15cfb18f9ce55eef85bb6bcd62d31acc57 (diff)
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>
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