summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/lima/lima_devfreq.c
AgeCommit message (Collapse)Author
2020-04-24drm/lima: add lima_devfreq_resume/suspendQiang Yu
Used for device resume/suspend in the following commits. Tested-by: Bhushan Shah <bshah@kde.org> Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200421133551.31481-6-yuq825@gmail.com
2020-04-24drm/lima: Clean up redundant pdev pointerRobin Murphy
There's no point explicitly tracking the platform device when it can be trivially derived from the regular device pointer in the couple of places it's ever used. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/8d9073cc91c10fc70910587fd1794e0e8f32b467.1587509150.git.robin.murphy@arm.com
2020-03-28drm/lima: Add optional devfreq and cooling device supportMartin Blumenstingl
Most platforms with a Mali-400 or Mali-450 GPU also have support for changing the GPU clock frequency. Add devfreq support so the GPU clock rate is updated based on the actual GPU usage when the "operating-points-v2" property is present in the board.dts. The actual devfreq code is taken from panfrost_devfreq.c and modified so it matches what the lima hardware needs: - a call to dev_pm_opp_set_clkname() during initialization because there are two clocks on Mali-4x0 IPs. "core" is the one that actually clocks the GPU so we need to control it using devfreq. - locking when reading or writing the devfreq statistics because (unlike than panfrost) we have multiple PP and GP IRQs which may finish jobs concurrently. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200319203427.2259891-3-martin.blumenstingl@googlemail.com