drm/tegra: dc: Implement runtime PM

Browse source

Use runtime PM to clock-gate, assert reset and powergate the display
controller. This ties in nicely with atomic DPMS in that a runtime PM
reference is taken before a pipe is enabled and dropped after it has
been shut down.

To make sure this works, make sure to only ever update planes on active
CRTCs, otherwise register accesses to a clock-gated and reset CRTC will
hang the CPU.

Signed-off-by: Thierry Reding <treding@nvidia.com>

...

This commit is contained in:

Thierry Reding 2015-08-03 13:20:49 +02:00

parent 2ccb396e9d

commit 33a8eb8d40

2 changed files with 107 additions and 71 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

176

drivers/gpu/drm/tegra/dc.c

View file

2

drivers/gpu/drm/tegra/drm.c

View file