Santosh Katvate 4d93f77745 video: tegra: gk20a: Disable gfx before save zbc ...

This change disables gr engine before calling into pmu
for saving zbc and re-enables once it is finished.
Looks like NV_PPWR_PMU_BAR0_FECS_ERROR_CODE_PRI_TIMEOUT
error during access of NV_PLTCG_LTCS_LTSS_DSTG_ZBC_COLOR_CLEAR_VALUE
happens because of active concurrent memory traffic.

Bug 1489850

Change-Id: I60eacd718480a296f5a46438e18a519c7457f58a
Signed-off-by: Santosh Katvate <skatvate@nvidia.com>
Reviewed-on: http://git-master/r/398398
GVS: Gerrit_Virtual_Submit
(cherry picked from commit 42931088a3a1944359be61ebe39c646b41f73ee6)
Reviewed-on: http://git-master/r/402779
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Mitch Luban <mluban@nvidia.com>

2015-03-18 12:09:19 -07:00

197 KiB

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