drm/radeon/dpm: add debugfs support for TN

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

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

diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 6d4304cce83fe6be39bc1ff2656f09d46f9de88b..69165474090658aa2d6e92add243d4748bc5de44 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -2108,6 +2108,7 @@ static struct radeon_asic trinity_asic = {
                .get_sclk = &trinity_dpm_get_sclk,
                .get_mclk = &trinity_dpm_get_mclk,
                .print_power_state = &trinity_dpm_print_power_state,
+               .debugfs_print_current_performance_level = &trinity_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 958d30f3306606e278e4b7097d1cb6384739898f..5904d897586d8a3789d8b9fbd803a2ca29142707 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -626,6 +626,8 @@ u32 trinity_dpm_get_sclk(struct radeon_device *rdev, bool low);
 u32 trinity_dpm_get_mclk(struct radeon_device *rdev, bool low);
 void trinity_dpm_print_power_state(struct radeon_device *rdev,
                                   struct radeon_ps *ps);
+void trinity_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
+                                                        struct seq_file *m);
 
 /* DCE6 - SI */
 void dce6_bandwidth_update(struct radeon_device *rdev);

diff --git a/drivers/gpu/drm/radeon/trinity_dpm.c b/drivers/gpu/drm/radeon/trinity_dpm.c
index fce825e112fff1d9866a4915a605600c6453538e..502d9153c4d58bd3151aed993f56b950ba2bf061 100644 (file)
--- a/drivers/gpu/drm/radeon/trinity_dpm.c
+++ b/drivers/gpu/drm/radeon/trinity_dpm.c
@@ -1855,6 +1855,27 @@ void trinity_dpm_print_power_state(struct radeon_device *rdev,
        r600_dpm_print_ps_status(rdev, rps);
 }
 
+void trinity_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
+                                                        struct seq_file *m)
+{
+       struct radeon_ps *rps = rdev->pm.dpm.current_ps;
+       struct trinity_ps *ps = trinity_get_ps(rps);
+       struct trinity_pl *pl;
+       u32 current_index =
+               (RREG32(TARGET_AND_CURRENT_PROFILE_INDEX) & CURRENT_STATE_MASK) >>
+               CURRENT_STATE_SHIFT;
+
+       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,
+                          trinity_convert_voltage_index_to_value(rdev, pl->vddc_index));
+       }
+}
+
 void trinity_dpm_fini(struct radeon_device *rdev)
 {
        int i;