Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit d0b54bdc authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/dpm: implement vblank_too_short callback for evergreen 



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 b06195d9

drivers/gpu/drm/radeon/cypress_dpm.c

+13 −0
Original line number Diff line number Diff line
@@ -2174,3 +2174,16 @@ void cypress_dpm_fini(struct radeon_device *rdev) 
	kfree(rdev->pm.dpm.ps);

	kfree(rdev->pm.dpm.priv);

}



bool cypress_dpm_vblank_too_short(struct radeon_device *rdev)

{

	struct rv7xx_power_info *pi = rv770_get_pi(rdev);

	u32 vblank_time = r600_dpm_get_vblank_time(rdev);

	u32 switch_limit = pi->mem_gddr5 ? 450 : 300;



	if (vblank_time < switch_limit)

		return true;

	else

		return false;



}

drivers/gpu/drm/radeon/radeon_asic.c

+1 −0
Original line number Diff line number Diff line
@@ -1519,6 +1519,7 @@ static struct radeon_asic evergreen_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 = &cypress_dpm_vblank_too_short,

	},

	.pflip = {

		.pre_page_flip = &evergreen_pre_page_flip,

drivers/gpu/drm/radeon/radeon_asic.h

+1 −0
Original line number Diff line number Diff line
@@ -545,6 +545,7 @@ void cypress_dpm_disable(struct radeon_device *rdev); 
int cypress_dpm_set_power_state(struct radeon_device *rdev);

void cypress_dpm_display_configuration_changed(struct radeon_device *rdev);

void cypress_dpm_fini(struct radeon_device *rdev);

bool cypress_dpm_vblank_too_short(struct radeon_device *rdev);

int btc_dpm_init(struct radeon_device *rdev);

void btc_dpm_setup_asic(struct radeon_device *rdev);

int btc_dpm_enable(struct radeon_device *rdev);