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
--- a/drivers/gpu/drm/radeon/r600_dpm.c
+++ b/drivers/gpu/drm/radeon/r600_dpm.c
@@ -174,6 +174,24 @@
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)
{