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Commit 5d5e5591 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/dpm: implement force performance level for ON/LN 



Allows you to force the selected performance level via sysfs.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a160a6a3

drivers/gpu/drm/radeon/radeon_asic.c

+1 −0
Original line number Diff line number Diff line
@@ -1641,6 +1641,7 @@ static struct radeon_asic sumo_asic = { 
		.get_mclk = &sumo_dpm_get_mclk,

		.print_power_state = &sumo_dpm_print_power_state,

		.debugfs_print_current_performance_level = &sumo_dpm_debugfs_print_current_performance_level,

		.force_performance_level = &sumo_dpm_force_performance_level,

	},

	.pflip = {

		.pre_page_flip = &evergreen_pre_page_flip,

drivers/gpu/drm/radeon/radeon_asic.h

+2 −0
Original line number Diff line number Diff line
@@ -569,6 +569,8 @@ void sumo_dpm_print_power_state(struct radeon_device *rdev, 
				struct radeon_ps *ps);

void sumo_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,

						      struct seq_file *m);

int sumo_dpm_force_performance_level(struct radeon_device *rdev,

				     enum radeon_dpm_forced_level level);



/*

 * cayman

drivers/gpu/drm/radeon/sumo_dpm.c

+44 −0
Original line number Diff line number Diff line
@@ -1319,6 +1319,8 @@ int sumo_dpm_set_power_state(struct radeon_device *rdev) 
	if (pi->enable_dpm)

		sumo_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);



	rdev->pm.dpm.forced_level = RADEON_DPM_FORCED_LEVEL_AUTO;



	return 0;

}
@@ -1830,3 +1832,45 @@ u32 sumo_dpm_get_mclk(struct radeon_device *rdev, bool low) 


	return pi->sys_info.bootup_uma_clk;

}



int sumo_dpm_force_performance_level(struct radeon_device *rdev,

				     enum radeon_dpm_forced_level level)

{

	struct sumo_power_info *pi = sumo_get_pi(rdev);

	struct radeon_ps *rps = &pi->current_rps;

	struct sumo_ps *ps = sumo_get_ps(rps);

	int i;



	if (ps->num_levels <= 1)

		return 0;



	if (level == RADEON_DPM_FORCED_LEVEL_HIGH) {

		sumo_power_level_enable(rdev, ps->num_levels - 1, true);

		sumo_set_forced_level(rdev, ps->num_levels - 1);

		sumo_set_forced_mode_enabled(rdev);

		for (i = 0; i < ps->num_levels - 1; i++) {

			sumo_power_level_enable(rdev, i, false);

		}

		sumo_set_forced_mode(rdev, false);

		sumo_set_forced_mode_enabled(rdev);

		sumo_set_forced_mode(rdev, false);

	} else if (level == RADEON_DPM_FORCED_LEVEL_LOW) {

		sumo_power_level_enable(rdev, 0, true);

		sumo_set_forced_level(rdev, 0);

		sumo_set_forced_mode_enabled(rdev);

		for (i = 1; i < ps->num_levels; i++) {

			sumo_power_level_enable(rdev, i, false);

		}

		sumo_set_forced_mode(rdev, false);

		sumo_set_forced_mode_enabled(rdev);

		sumo_set_forced_mode(rdev, false);

	} else {

		for (i = 0; i < ps->num_levels; i++) {

			sumo_power_level_enable(rdev, i, true);

		}

	}



	rdev->pm.dpm.forced_level = level;



	return 0;

}