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 <mrip...@kernel.org>
Reviewed-by: Maxime Ripard <mrip...@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@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

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