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>

diff --git a/drivers/gpu/drm/radeon/rs780_dpm.c b/drivers/gpu/drm/radeon/rs780_dpm.c
index 828a7764660c4ef111edcae7f99119155c7d7a0e..afb75845c161a366f2e71441373c71ea89a926ef 100644 (file)
--- 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;
                }
        }