drm/omap: hdmi5: Simplify EDID read

Now that the omap_dss_device EDID read operation has been removed,
simplify the bridge-based EDID access by merging multiple functions
together.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-45-laurent.pinchart@ideasonboard.com

drivers/gpu/drm/omapdrm/dss/hdmi5.c

@@ -307,50 +307,6 @@ static void hdmi_core_disable(struct omap_hdmi *hdmi)
 	mutex_unlock(&hdmi->lock);
 }
 
-static struct edid *
-hdmi_do_read_edid(struct omap_hdmi *hdmi,
-		  struct edid *(*read)(struct omap_hdmi *hdmi,
-				       struct drm_connector *connector),
-		  struct drm_connector *connector)
-{
-	struct edid *edid;
-	bool need_enable;
-	int idlemode;
-	int r;
-
-	need_enable = hdmi->core_enabled == false;
-
-	if (need_enable) {
-		r = hdmi_core_enable(hdmi);
-		if (r)
-			return NULL;
-	}
-
-	mutex_lock(&hdmi->lock);
-	r = hdmi_runtime_get(hdmi);
-	BUG_ON(r);
-
-	idlemode = REG_GET(hdmi->wp.base, HDMI_WP_SYSCONFIG, 3, 2);
-	/* No-idle mode */
-	REG_FLD_MOD(hdmi->wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
-
-	hdmi5_core_ddc_init(&hdmi->core);
-
-	edid = read(hdmi, connector);
-
-	hdmi5_core_ddc_uninit(&hdmi->core);
-
-	REG_FLD_MOD(hdmi->wp.base, HDMI_WP_SYSCONFIG, idlemode, 3, 2);
-
-	hdmi_runtime_put(hdmi);
-	mutex_unlock(&hdmi->lock);
-
-	if (need_enable)
-		hdmi_core_disable(hdmi);
-
-	return (struct edid *)edid;
-}
-
 /* -----------------------------------------------------------------------------
  * DRM Bridge Operations
  */
@@ -469,18 +425,46 @@ static void hdmi5_bridge_disable(struct drm_bridge *bridge,
 	mutex_unlock(&hdmi->lock);
 }
 
-static struct edid *hdmi5_bridge_read_edid(struct omap_hdmi *hdmi,
-					   struct drm_connector *connector)
-{
-	return drm_do_get_edid(connector, hdmi5_core_ddc_read, &hdmi->core);
-}
-
 static struct edid *hdmi5_bridge_get_edid(struct drm_bridge *bridge,
 					  struct drm_connector *connector)
 {
 	struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
+	struct edid *edid;
+	bool need_enable;
+	int idlemode;
+	int r;
+
+	need_enable = hdmi->core_enabled == false;
+
+	if (need_enable) {
+		r = hdmi_core_enable(hdmi);
+		if (r)
+			return NULL;
+	}
+
+	mutex_lock(&hdmi->lock);
+	r = hdmi_runtime_get(hdmi);
+	BUG_ON(r);
+
+	idlemode = REG_GET(hdmi->wp.base, HDMI_WP_SYSCONFIG, 3, 2);
+	/* No-idle mode */
+	REG_FLD_MOD(hdmi->wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
+
+	hdmi5_core_ddc_init(&hdmi->core);
+
+	edid = drm_do_get_edid(connector, hdmi5_core_ddc_read, &hdmi->core);
+
+	hdmi5_core_ddc_uninit(&hdmi->core);
 
-	return hdmi_do_read_edid(hdmi, hdmi5_bridge_read_edid, connector);
+	REG_FLD_MOD(hdmi->wp.base, HDMI_WP_SYSCONFIG, idlemode, 3, 2);
+
+	hdmi_runtime_put(hdmi);
+	mutex_unlock(&hdmi->lock);
+
+	if (need_enable)
+		hdmi_core_disable(hdmi);
+
+	return (struct edid *)edid;
 }
 
 static const struct drm_bridge_funcs hdmi5_bridge_funcs = {