drm/radeon/dpm: add debugfs support for ON/LN

This allows you to look at the current DPM state via
debugfs.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 31 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index a2a34f86434b..6d4304cce83f 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -1638,6 +1638,7 @@ static struct radeon_asic sumo_asic = {
                 .get_sclk = &sumo_dpm_get_sclk,
                 .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,
         },
         .pflip = {
                 .pre_page_flip = &evergreen_pre_page_flip,
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 39f5d96d7c49..958d30f33066 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -565,6 +565,8 @@ u32 sumo_dpm_get_sclk(struct radeon_device *rdev, bool low);
 u32 sumo_dpm_get_mclk(struct radeon_device *rdev, bool low);
 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);
 
 /*
  * cayman
diff --git a/drivers/gpu/drm/radeon/sumo_dpm.c b/drivers/gpu/drm/radeon/sumo_dpm.c
index 0c3d7526cda5..68fefb916582 100644
--- a/drivers/gpu/drm/radeon/sumo_dpm.c
+++ b/drivers/gpu/drm/radeon/sumo_dpm.c
@@ -1752,6 +1752,34 @@ void sumo_dpm_print_power_state(struct radeon_device *rdev,
         r600_dpm_print_ps_status(rdev, rps);
 }
 
+void sumo_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
+                                                      struct seq_file *m)
+{
+        struct sumo_power_info *pi = sumo_get_pi(rdev);
+        struct radeon_ps *rps = rdev->pm.dpm.current_ps;
+        struct sumo_ps *ps = sumo_get_ps(rps);
+        struct sumo_pl *pl;
+        u32 current_index =
+                (RREG32(TARGET_AND_CURRENT_PROFILE_INDEX) & CURR_INDEX_MASK) >>
+                CURR_INDEX_SHIFT;
+
+        if (current_index == BOOST_DPM_LEVEL) {
+                pl = &pi->boost_pl;
+                seq_printf(m, "uvd    vclk: %d dclk: %d\n", rps->vclk, rps->dclk);
+                seq_printf(m, "power level %d    sclk: %u vddc: %u\n",
+                           current_index, pl->sclk,
+                           sumo_convert_voltage_index_to_value(rdev, pl->vddc_index));
+        } else if (current_index >= ps->num_levels) {
+                seq_printf(m, "invalid dpm profile %d\n", current_index);
+        } else {
+                pl = &ps->levels[current_index];
+                seq_printf(m, "uvd    vclk: %d dclk: %d\n", rps->vclk, rps->dclk);
+                seq_printf(m, "power level %d    sclk: %u vddc: %u\n",
+                           current_index, pl->sclk,
+                           sumo_convert_voltage_index_to_value(rdev, pl->vddc_index));
+        }
+}
+
 void sumo_dpm_fini(struct radeon_device *rdev)
 {
         int i;