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Commit b06195d9 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/dpm: implement vblank_too_short callback for 7xx 



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: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 48783069

drivers/gpu/drm/radeon/radeon_asic.c

+1 −0
Original line number Diff line number Diff line
@@ -1394,6 +1394,7 @@ static struct radeon_asic rv770_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 = &rv770_dpm_vblank_too_short,

	},

	.pflip = {

		.pre_page_flip = &rs600_pre_page_flip,

drivers/gpu/drm/radeon/radeon_asic.h

+1 −0
Original line number Diff line number Diff line
@@ -480,6 +480,7 @@ void rv770_dpm_debugfs_print_current_performance_level(struct radeon_device *rde 
						       struct seq_file *m);

int rv770_dpm_force_performance_level(struct radeon_device *rdev,

				      enum radeon_dpm_forced_level level);

bool rv770_dpm_vblank_too_short(struct radeon_device *rdev);



/*

 * evergreen

drivers/gpu/drm/radeon/rv770_dpm.c

+11 −0
Original line number Diff line number Diff line
@@ -2508,3 +2508,14 @@ u32 rv770_dpm_get_mclk(struct radeon_device *rdev, bool low) 
	else

		return requested_state->high.mclk;

}



bool rv770_dpm_vblank_too_short(struct radeon_device *rdev)

{

	u32 vblank_time = r600_dpm_get_vblank_time(rdev);



	if (vblank_time < 300)

		return true;

	else

		return false;



}