drm/radeon/dpm: implement force performance level for SI
Allows you to force the selected performance level via sysfs.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index a7e97cd..700a167 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -3231,16 +3231,38 @@
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)
{
- if (si_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetForcedLevels, 0) != PPSMC_Result_OK)
- return -EINVAL;
+ struct radeon_ps *rps = rdev->pm.dpm.current_ps;
+ struct ni_ps *ps = ni_get_ps(rps);
+ u32 levels;
- return (si_send_msg_to_smc_with_parameter(rdev, PPSMC_MSG_SetEnabledLevels, 0) == PPSMC_Result_OK) ?
- 0 : -EINVAL;
+ 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;
+
+ 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 @@
#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;