drm/radeon/kms: add trivial debugging for voltage

agd5f: rebased
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/evergreen.c

@@ -50,6 +50,7 @@ void evergreen_pm_misc(struct radeon_device *rdev)
 		if (voltage->voltage != rdev->pm.current_vddc) {
 			radeon_atom_set_voltage(rdev, voltage->voltage);
 			rdev->pm.current_vddc = voltage->voltage;
+			DRM_DEBUG("Setting: v: %d\n", voltage->voltage);
 		}
 	}
 }

drivers/gpu/drm/radeon/r600.c

@@ -566,6 +566,7 @@ void r600_pm_misc(struct radeon_device *rdev)
 		if (voltage->voltage != rdev->pm.current_vddc) {
 			radeon_atom_set_voltage(rdev, voltage->voltage);
 			rdev->pm.current_vddc = voltage->voltage;
+			DRM_DEBUG("Setting: v: %d\n", voltage->voltage);
 		}
 	}
 }

drivers/gpu/drm/radeon/radeon_pm.c

@@ -699,6 +699,8 @@ static int radeon_debugfs_pm_info(struct seq_file *m, void *data)
 	seq_printf(m, "default memory clock: %u0 kHz\n", rdev->clock.default_mclk);
 	if (rdev->asic->get_memory_clock)
 		seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
+	if (rdev->pm.current_vddc)
+		seq_printf(m, "voltage: %u mV\n", rdev->pm.current_vddc);
 	if (rdev->asic->get_pcie_lanes)
 		seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
 

drivers/gpu/drm/radeon/rv770.c

@@ -53,6 +53,7 @@ void rv770_pm_misc(struct radeon_device *rdev)
 		if (voltage->voltage != rdev->pm.current_vddc) {
 			radeon_atom_set_voltage(rdev, voltage->voltage);
 			rdev->pm.current_vddc = voltage->voltage;
+			DRM_DEBUG("Setting: v: %d\n", voltage->voltage);
 		}
 	}
 }