drm/radeon/dpm: add helper to fetch the vrefresh of the current mode

Needed for DPM on CI.

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

diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c
index 89c46c5..26a7878 100644 (file)
--- a/drivers/gpu/drm/radeon/r600_dpm.c
+++ b/drivers/gpu/drm/radeon/r600_dpm.c
@@ -174,6 +174,24 @@ u32 r600_dpm_get_vblank_time(struct radeon_device *rdev)
        return vblank_time_us;
 }
 
+u32 r600_dpm_get_vrefresh(struct radeon_device *rdev)
+{
+       struct drm_device *dev = rdev->ddev;
+       struct drm_crtc *crtc;
+       struct radeon_crtc *radeon_crtc;
+       u32 vrefresh = 0;
+
+       list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+               radeon_crtc = to_radeon_crtc(crtc);
+               if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
+                       vrefresh = radeon_crtc->hw_mode.vrefresh;
+                       break;
+               }
+       }
+
+       return vrefresh;
+}
+
 void r600_calculate_u_and_p(u32 i, u32 r_c, u32 p_b,
                            u32 *p, u32 *u)
 {

diff --git a/drivers/gpu/drm/radeon/r600_dpm.h b/drivers/gpu/drm/radeon/r600_dpm.h
index 8dc1fbd..1000bf9 100644 (file)
--- a/drivers/gpu/drm/radeon/r600_dpm.h
+++ b/drivers/gpu/drm/radeon/r600_dpm.h
@@ -130,6 +130,7 @@ void r600_dpm_print_cap_info(u32 caps);
 void r600_dpm_print_ps_status(struct radeon_device *rdev,
                              struct radeon_ps *rps);
 u32 r600_dpm_get_vblank_time(struct radeon_device *rdev);
+u32 r600_dpm_get_vrefresh(struct radeon_device *rdev);
 bool r600_is_uvd_state(u32 class, u32 class2);
 void r600_calculate_u_and_p(u32 i, u32 r_c, u32 p_b,
                            u32 *p, u32 *u);