[PATCH v16 08/12] drm: bridge/dw_hdmi: add mode_valid support

[Andy Yan <andy.yan@rock-chips.com>]

some platform may not support all the display mode,
add mode_valid interface check it

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>

---

Changes in v16: None
Changes in v15: None
Changes in v14:
- remove drm_connector_register, because imx-drm core has registered
connector

Changes in v13: None
Changes in v12: None
Changes in v11: None
Changes in v10: None
Changes in v9: None
Changes in v8: None
Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3: None

 drivers/gpu/drm/bridge/dw_hdmi.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c
index d2c6ba8..e3999da 100644
--- a/drivers/gpu/drm/bridge/dw_hdmi.c
+++ b/drivers/gpu/drm/bridge/dw_hdmi.c
@@ -1405,6 +1405,20 @@ static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
 	return 0;
 }
 
+static enum drm_mode_status
+dw_hdmi_connector_mode_valid(struct drm_connector *connector,
+			     struct drm_display_mode *mode)
+{
+	struct dw_hdmi *hdmi = container_of(connector,
+					   struct dw_hdmi, connector);
+	enum drm_mode_status mode_status = MODE_OK;
+
+	if (hdmi->plat_data->mode_valid)
+		mode_status = hdmi->plat_data->mode_valid(connector, mode);
+
+	return mode_status;
+}
+
 static struct drm_encoder *dw_hdmi_connector_best_encoder(struct drm_connector
 							   *connector)
 {
@@ -1429,6 +1443,7 @@ static struct drm_connector_funcs dw_hdmi_connector_funcs = {
 
 static struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = {
 	.get_modes = dw_hdmi_connector_get_modes,
+	.mode_valid = dw_hdmi_connector_mode_valid,
 	.best_encoder = dw_hdmi_connector_best_encoder,
 };
 
-- 
1.9.1