Replace sun4i_hdmi_connector_atomic_check(), which performs just TMDS
char rate check, with drm_atomic_helper_connector_hdmi_check(), which
performs additional checks basing on the HDMI Connector's state.

Suggested-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 20 +-------------------
 1 file changed, 1 insertion(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
index 54b72fe220afacc208b3fd48d5160031127ea14a..b05fd77870b00aac97d003f3fb9c2b98cb73abc0 100644
--- a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
@@ -187,24 +187,6 @@ sun4i_hdmi_connector_clock_valid(const struct drm_connector *connector,
 	return MODE_NOCLOCK;
 }
 
-static int sun4i_hdmi_connector_atomic_check(struct drm_connector *connector,
-					     struct drm_atomic_state *state)
-{
-	struct drm_connector_state *conn_state =
-		drm_atomic_get_new_connector_state(state, connector);
-	struct drm_crtc *crtc = conn_state->crtc;
-	struct drm_crtc_state *crtc_state = crtc->state;
-	struct drm_display_mode *mode = &crtc_state->adjusted_mode;
-	enum drm_mode_status status;
-
-	status = sun4i_hdmi_connector_clock_valid(connector, mode,
-						  conn_state->hdmi.tmds_char_rate);
-	if (status != MODE_OK)
-		return -EINVAL;
-
-	return 0;
-}
-
 static int sun4i_hdmi_get_modes(struct drm_connector *connector)
 {
 	struct sun4i_hdmi *hdmi = drm_connector_to_sun4i_hdmi(connector);
@@ -258,7 +240,7 @@ static const struct drm_connector_hdmi_funcs sun4i_hdmi_hdmi_connector_funcs = {
 };
 
 static const struct drm_connector_helper_funcs sun4i_hdmi_connector_helper_funcs = {
-	.atomic_check	= sun4i_hdmi_connector_atomic_check,
+	.atomic_check	= drm_atomic_helper_connector_hdmi_check,
 	.mode_valid	= drm_hdmi_connector_mode_valid,
 	.get_modes	= sun4i_hdmi_get_modes,
 };

-- 
2.39.5