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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
parent d0b54bdc93
commit a84301c65d
3 changed files with 17 additions and 1 deletions
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drivers/gpu/drm/radeon/radeon_asic.h
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@@ -556,6 +556,7 @@ void btc_dpm_post_set_power_state(struct radeon_device *rdev);
void btc_dpm_fini(struct radeon_device *rdev);
u32 btc_dpm_get_sclk(struct radeon_device *rdev, bool low);
u32 btc_dpm_get_mclk(struct radeon_device *rdev, bool low);
bool btc_dpm_vblank_too_short(struct radeon_device *rdev);
int sumo_dpm_init(struct radeon_device *rdev);
int sumo_dpm_enable(struct radeon_device *rdev);
void sumo_dpm_disable(struct radeon_device *rdev);