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

[mirror_ubuntu-artful-kernel.git] / drivers / gpu / drm / radeon / trinity_dpm.c

diff --git a/drivers/gpu/drm/radeon/trinity_dpm.c b/drivers/gpu/drm/radeon/trinity_dpm.c
index 8a32bcc6bbb5b13a3f9da2171d9007d08fc30b67..a1eb5f59939f14124ff24b0c1917b9e08f403dab 100644 (file)
--- a/drivers/gpu/drm/radeon/trinity_dpm.c
+++ b/drivers/gpu/drm/radeon/trinity_dpm.c
@@ -1158,6 +1158,37 @@ static void trinity_setup_nbp_sim(struct radeon_device *rdev,
        }
 }
 
+int trinity_dpm_force_performance_level(struct radeon_device *rdev,
+                                       enum radeon_dpm_forced_level level)
+{
+       struct trinity_power_info *pi = trinity_get_pi(rdev);
+       struct radeon_ps *rps = &pi->current_rps;
+       struct trinity_ps *ps = trinity_get_ps(rps);
+       int i, ret;
+
+       if (ps->num_levels <= 1)
+               return 0;
+
+       if (level == RADEON_DPM_FORCED_LEVEL_HIGH) {
+               /* not supported by the hw */
+               return -EINVAL;
+       } else if (level == RADEON_DPM_FORCED_LEVEL_LOW) {
+               ret = trinity_dpm_n_levels_disabled(rdev, ps->num_levels - 1);
+               if (ret)
+                       return ret;
+       } else {
+               for (i = 0; i < ps->num_levels; i++) {
+                       ret = trinity_dpm_n_levels_disabled(rdev, 0);
+                       if (ret)
+                               return ret;
+               }
+       }
+
+       rdev->pm.dpm.forced_level = level;
+
+       return 0;
+}
+
 int trinity_dpm_pre_set_power_state(struct radeon_device *rdev)
 {
        struct trinity_power_info *pi = trinity_get_pi(rdev);
@@ -1190,6 +1221,7 @@ int trinity_dpm_set_power_state(struct radeon_device *rdev)
                trinity_force_level_0(rdev);
                trinity_unforce_levels(rdev);
                trinity_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);
+               rdev->pm.dpm.forced_level = RADEON_DPM_FORCED_LEVEL_AUTO;
        }
        trinity_release_mutex(rdev);