drm/radeon/dpm/rs780: use drm_mode_vrefresh()

Rather than open coding it.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/gpu/drm/radeon/rs780_dpm.c b/drivers/gpu/drm/radeon/rs780_dpm.c
index 828a7764660c..afb75845c161 100644
--- a/drivers/gpu/drm/radeon/rs780_dpm.c
+++ b/drivers/gpu/drm/radeon/rs780_dpm.c
@@ -62,9 +62,7 @@ static void rs780_get_pm_mode_parameters(struct radeon_device *rdev)
                         radeon_crtc = to_radeon_crtc(crtc);
                         pi->crtc_id = radeon_crtc->crtc_id;
                         if (crtc->mode.htotal && crtc->mode.vtotal)
-                                pi->refresh_rate =
-                                        (crtc->mode.clock * 1000) /
-                                        (crtc->mode.htotal * crtc->mode.vtotal);
+                                pi->refresh_rate = drm_mode_vrefresh(&crtc->mode);
                         break;
                 }
         }