drm: Add TV connector states to drm_connector_state

Some generic TV connector properties are exposed in drm_mode_config, but
they are currently handled independently in each DRM encoder driver.

Extend the drm_connector_state to store TV related states, and modify the
drm_atomic_connector_{set,get}_property() helpers to fill the connector
state accordingly.

Each driver is then responsible for checking and applying the new config
in its ->atomic_mode_{check,set}() operations.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Eric Anholt <eric@anholt.net>

drivers/gpu/drm/drm_atomic.c

@@ -986,12 +986,38 @@ int drm_atomic_connector_set_property(struct drm_connector *connector,
 		 * now?) atomic writes to DPMS property:
 		 */
 		return -EINVAL;
+	} else if (property == config->tv_select_subconnector_property) {
+		state->tv.subconnector = val;
+	} else if (property == config->tv_left_margin_property) {
+		state->tv.margins.left = val;
+	} else if (property == config->tv_right_margin_property) {
+		state->tv.margins.right = val;
+	} else if (property == config->tv_top_margin_property) {
+		state->tv.margins.top = val;
+	} else if (property == config->tv_bottom_margin_property) {
+		state->tv.margins.bottom = val;
+	} else if (property == config->tv_mode_property) {
+		state->tv.mode = val;
+	} else if (property == config->tv_brightness_property) {
+		state->tv.brightness = val;
+	} else if (property == config->tv_contrast_property) {
+		state->tv.contrast = val;
+	} else if (property == config->tv_flicker_reduction_property) {
+		state->tv.flicker_reduction = val;
+	} else if (property == config->tv_overscan_property) {
+		state->tv.overscan = val;
+	} else if (property == config->tv_saturation_property) {
+		state->tv.saturation = val;
+	} else if (property == config->tv_hue_property) {
+		state->tv.hue = val;
 	} else if (connector->funcs->atomic_set_property) {
 		return connector->funcs->atomic_set_property(connector,
 				state, property, val);
 	} else {
 		return -EINVAL;
 	}
+
+	return 0;
 }
 EXPORT_SYMBOL(drm_atomic_connector_set_property);
 
@@ -1022,6 +1048,30 @@ drm_atomic_connector_get_property(struct drm_connector *connector,
 		*val = (state->crtc) ? state->crtc->base.id : 0;
 	} else if (property == config->dpms_property) {
 		*val = connector->dpms;
+	} else if (property == config->tv_select_subconnector_property) {
+		*val = state->tv.subconnector;
+	} else if (property == config->tv_left_margin_property) {
+		*val = state->tv.margins.left;
+	} else if (property == config->tv_right_margin_property) {
+		*val = state->tv.margins.right;
+	} else if (property == config->tv_top_margin_property) {
+		*val = state->tv.margins.top;
+	} else if (property == config->tv_bottom_margin_property) {
+		*val = state->tv.margins.bottom;
+	} else if (property == config->tv_mode_property) {
+		*val = state->tv.mode;
+	} else if (property == config->tv_brightness_property) {
+		*val = state->tv.brightness;
+	} else if (property == config->tv_contrast_property) {
+		*val = state->tv.contrast;
+	} else if (property == config->tv_flicker_reduction_property) {
+		*val = state->tv.flicker_reduction;
+	} else if (property == config->tv_overscan_property) {
+		*val = state->tv.overscan;
+	} else if (property == config->tv_saturation_property) {
+		*val = state->tv.saturation;
+	} else if (property == config->tv_hue_property) {
+		*val = state->tv.hue;
 	} else if (connector->funcs->atomic_get_property) {
 		return connector->funcs->atomic_get_property(connector,
 				state, property, val);

include/drm/drm_connector.h

@@ -193,11 +193,41 @@ int drm_display_info_set_bus_formats(struct drm_display_info *info,
 				     const u32 *formats,
 				     unsigned int num_formats);
 
+/**
+ * struct drm_tv_connector_state - TV connector related states
+ * @subconnector: selected subconnector
+ * @margins: left/right/top/bottom margins
+ * @mode: TV mode
+ * @brightness: brightness in percent
+ * @contrast: contrast in percent
+ * @flicker_reduction: flicker reduction in percent
+ * @overscan: overscan in percent
+ * @saturation: saturation in percent
+ * @hue: hue in percent
+ */
+struct drm_tv_connector_state {
+	enum drm_mode_subconnector subconnector;
+	struct {
+		unsigned int left;
+		unsigned int right;
+		unsigned int top;
+		unsigned int bottom;
+	} margins;
+	unsigned int mode;
+	unsigned int brightness;
+	unsigned int contrast;
+	unsigned int flicker_reduction;
+	unsigned int overscan;
+	unsigned int saturation;
+	unsigned int hue;
+};
+
 /**
  * struct drm_connector_state - mutable connector state
  * @connector: backpointer to the connector
  * @best_encoder: can be used by helpers and drivers to select the encoder
  * @state: backpointer to global drm_atomic_state
+ * @tv: TV connector state
  */
 struct drm_connector_state {
 	struct drm_connector *connector;
@@ -213,6 +243,8 @@ struct drm_connector_state {
 	struct drm_encoder *best_encoder;
 
 	struct drm_atomic_state *state;
+
+	struct drm_tv_connector_state tv;
 };
 
 /**