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Commit a160a6a3 authored by Alex Deucher's avatar Alex Deucher
Browse files

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



Allows you to force the selected performance level via sysfs.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 170a47f0

drivers/gpu/drm/radeon/radeon_asic.c

+1 −0
Original line number Diff line number Diff line
@@ -2287,6 +2287,7 @@ static struct radeon_asic si_asic = { 
		.get_mclk = &ni_dpm_get_mclk,

		.print_power_state = &ni_dpm_print_power_state,

		.debugfs_print_current_performance_level = &si_dpm_debugfs_print_current_performance_level,

		.force_performance_level = &si_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
@@ -683,6 +683,8 @@ void si_dpm_fini(struct radeon_device *rdev); 
void si_dpm_display_configuration_changed(struct radeon_device *rdev);

void si_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,

						    struct seq_file *m);

int si_dpm_force_performance_level(struct radeon_device *rdev,

				   enum radeon_dpm_forced_level level);



/* DCE8 - CIK */

void dce8_bandwidth_update(struct radeon_device *rdev);

drivers/gpu/drm/radeon/si_dpm.c

+33 −9
Original line number Diff line number Diff line
@@ -3231,16 +3231,38 @@ static int si_restrict_performance_levels_before_switch(struct radeon_device *rd 
		0 : -EINVAL;

}



#if 0

static int si_unrestrict_performance_levels_after_switch(struct radeon_device *rdev)

int si_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 (si_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetEnabledLevels, 0) != PPSMC_Result_OK)

			return -EINVAL;



		if (si_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 (si_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetForcedLevels, 0) != PPSMC_Result_OK)

			return -EINVAL;



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

		0 : -EINVAL;

		levels = ps->performance_level_count - 1;

		if (si_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 (si_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetForcedLevels, 0) != PPSMC_Result_OK)

			return -EINVAL;



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

			return -EINVAL;

	}



	rdev->pm.dpm.forced_level = level;



	return 0;

}

#endif



static int si_set_boot_state(struct radeon_device *rdev)

{
@@ -5992,11 +6014,13 @@ int si_dpm_set_power_state(struct radeon_device *rdev) 


#if 0

	/* XXX */

	ret = si_unrestrict_performance_levels_after_switch(rdev);

	ret = si_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO);

	if (ret) {

		DRM_ERROR("si_unrestrict_performance_levels_after_switch failed\n");

		DRM_ERROR("si_dpm_force_performance_level failed\n");

		return ret;

	}

#else

	rdev->pm.dpm.forced_level = RADEON_DPM_FORCED_LEVEL_AUTO;

#endif



	return 0;