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drm/radeon/dpm: implement vblank_too_short callback for btc

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Check if we can switch the mclk during the vblank time otherwise
we may get artifacts on the screen when the mclk changes.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-07-08 12:03:55 -04:00
commit a84301c65d
3 changed files with 17 additions and 1 deletions
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1
drivers/gpu/drm/radeon/radeon_asic.c
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@ -1768,6 +1768,7 @@ static struct radeon_asic btc_asic = {
.print_power_state = &rv770_dpm_print_power_state,
.debugfs_print_current_performance_level = &rv770_dpm_debugfs_print_current_performance_level,
.force_performance_level = &rv770_dpm_force_performance_level,
.vblank_too_short = &btc_dpm_vblank_too_short,
},
.pflip = {
.pre_page_flip = &evergreen_pre_page_flip,