Commit 170a47f0 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/dpm: implement force performance level for cayman 



Allows you to force a performance level via sysfs.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 8b5e6b7f

drivers/gpu/drm/radeon/ni_dpm.c

+31 −7
Original line number Diff line number Diff line
@@ -1037,13 +1037,37 @@ static int ni_restrict_performance_levels_before_switch(struct radeon_device *rd 
		0 : -EINVAL;

}



static int ni_unrestrict_performance_levels_after_switch(struct radeon_device *rdev)

int ni_dpm_force_performance_level(struct radeon_device *rdev,

				   enum radeon_dpm_forced_level level)

{

	struct radeon_ps *rps = rdev->pm.dpm.current_ps;

	struct ni_ps *ps = ni_get_ps(rps);

	u32 levels;



	if (level == RADEON_DPM_FORCED_LEVEL_HIGH) {

		if (ni_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetEnabledLevels, 0) != PPSMC_Result_OK)

			return -EINVAL;



		if (ni_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetForcedLevels, 1) != PPSMC_Result_OK)

			return -EINVAL;

	} else if (level == RADEON_DPM_FORCED_LEVEL_LOW) {

		if (ni_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetForcedLevels, 0) != PPSMC_Result_OK)

			return -EINVAL;



	return (ni_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetEnabledLevels, 0) == PPSMC_Result_OK) ?

		0 : -EINVAL;

		levels = ps->performance_level_count - 1;

		if (ni_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetEnabledLevels, levels) != PPSMC_Result_OK)

			return -EINVAL;

	} else if (level == RADEON_DPM_FORCED_LEVEL_AUTO) {

		if (ni_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetForcedLevels, 0) != PPSMC_Result_OK)

			return -EINVAL;



		if (ni_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetEnabledLevels, 0) != PPSMC_Result_OK)

			return -EINVAL;

	}



	rdev->pm.dpm.forced_level = level;



	return 0;

}



static void ni_stop_smc(struct radeon_device *rdev)
@@ -3831,9 +3855,9 @@ int ni_dpm_set_power_state(struct radeon_device *rdev) 
		return ret;

	}



	ret = ni_unrestrict_performance_levels_after_switch(rdev);

	ret = ni_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO);

	if (ret) {

		DRM_ERROR("ni_unrestrict_performance_levels_after_switch failed\n");

		DRM_ERROR("ni_dpm_force_performance_level failed\n");

		return ret;

	}

drivers/gpu/drm/radeon/radeon_asic.c

+1 −0
Original line number Diff line number Diff line
@@ -1940,6 +1940,7 @@ static struct radeon_asic cayman_asic = { 
		.get_mclk = &ni_dpm_get_mclk,

		.print_power_state = &ni_dpm_print_power_state,

		.debugfs_print_current_performance_level = &ni_dpm_debugfs_print_current_performance_level,

		.force_performance_level = &ni_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
@@ -617,6 +617,8 @@ void ni_dpm_print_power_state(struct radeon_device *rdev, 
			      struct radeon_ps *ps);

void ni_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,

						    struct seq_file *m);

int ni_dpm_force_performance_level(struct radeon_device *rdev,

				   enum radeon_dpm_forced_level level);

int trinity_dpm_init(struct radeon_device *rdev);

int trinity_dpm_enable(struct radeon_device *rdev);

void trinity_dpm_disable(struct radeon_device *rdev);