Searched hist:"33 a8eb8d40ee7fc07f23a407607bdbaa46893b2d" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/drivers/gpu/drm/tegra/ |
| H A D | dc.c | diff 33a8eb8d40ee7fc07f23a407607bdbaa46893b2d Mon Aug 03 06:20:49 CDT 2015 Thierry Reding <treding@nvidia.com> drm/tegra: dc: Implement runtime PM
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>
|
| H A D | drm.c | diff 33a8eb8d40ee7fc07f23a407607bdbaa46893b2d Mon Aug 03 06:20:49 CDT 2015 Thierry Reding <treding@nvidia.com> drm/tegra: dc: Implement runtime PM
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>
|