drm/omap: simplify DSI manual update code

Move dsi_ops into the main structure, since all other ops
are gone. Instead of checking the device type we can simply
check if dsi_ops are set.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-48-tomi.valkeinen@ti.com

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

@@ -5011,11 +5011,9 @@ static int dsi_get_clocks(struct dsi_data *dsi)
 	return 0;
 }
 
-static const struct omap_dss_device_ops dsi_ops = {
-	.dsi = {
+static const struct omapdss_dsi_ops dsi_ops = {
 	.update = dsi_update_all,
 	.is_video_mode = dsi_is_video_mode,
-	},
 };
 
 static irqreturn_t omap_dsi_te_irq_handler(int irq, void *dev_id)
@@ -5446,7 +5444,7 @@ static int dsi_init_output(struct dsi_data *dsi)
 	out->type = OMAP_DISPLAY_TYPE_DSI;
 	out->name = dsi->module_id == 0 ? "dsi.0" : "dsi.1";
 	out->dispc_channel = dsi_get_channel(dsi);
-	out->ops = &dsi_ops;
+	out->dsi_ops = &dsi_ops;
 	out->owner = THIS_MODULE;
 	out->of_port = 0;
 	out->bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE

drivers/gpu/drm/omapdrm/dss/omapdss.h

@@ -278,10 +278,6 @@ struct omapdss_dsi_ops {
 	bool (*is_video_mode)(struct omap_dss_device *dssdev);
 };
 
-struct omap_dss_device_ops {
-	const struct omapdss_dsi_ops dsi;
-};
-
 struct omap_dss_device {
 	struct device *dev;
 
@@ -303,7 +299,7 @@ struct omap_dss_device {
 
 	const char *name;
 
-	const struct omap_dss_device_ops *ops;
+	const struct omapdss_dsi_ops *dsi_ops;
 	u32 bus_flags;
 
 	/* OMAP DSS output specific fields */

drivers/gpu/drm/omapdrm/omap_crtc.c

@@ -366,17 +366,10 @@ static void omap_crtc_manual_display_update(struct work_struct *data)
 	struct drm_device *dev = omap_crtc->base.dev;
 	int ret;
 
-	if (!dssdev) {
-		dev_err_once(dev->dev, "missing display dssdev!");
+	if (!dssdev || !dssdev->dsi_ops || !dssdev->dsi_ops->update)
 		return;
-	}
-
-	if (dssdev->type != OMAP_DISPLAY_TYPE_DSI || !dssdev->ops->dsi.update) {
-		dev_err_once(dev->dev, "no DSI update callback found!");
-		return;
-	}
 
-	ret = dssdev->ops->dsi.update(dssdev);
+	ret = dssdev->dsi_ops->update(dssdev);
 	if (ret < 0) {
 		spin_lock_irq(&dev->event_lock);
 		omap_crtc->pending = false;
@@ -585,11 +578,10 @@ static bool omap_crtc_is_manually_updated(struct drm_crtc *crtc)
 	struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 	struct omap_dss_device *dssdev = omap_crtc->pipe->output;
 
-	if (dssdev->type != OMAP_DISPLAY_TYPE_DSI ||
-	    !dssdev->ops->dsi.is_video_mode)
+	if (!dssdev || !dssdev->dsi_ops || !dssdev->dsi_ops->is_video_mode)
 		return false;
 
-	if (dssdev->ops->dsi.is_video_mode(dssdev))
+	if (dssdev->dsi_ops->is_video_mode(dssdev))
 		return false;
 
 	DBG("detected manually updated display!");