drm: omapdrm: Remove manual update display support

All the manual update display code implements eventually ends up to just
calls to omap_connector_flush(), currently implemented as an empty TODO
stub. Remove it, the code can always be revived and implemented later if
interest in manual update displays becomes a reality.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

drivers/gpu/drm/omapdrm/omap_connector.c

@@ -271,18 +271,6 @@ static const struct drm_connector_helper_funcs omap_connector_helper_funcs = {
 	.best_encoder = omap_connector_attached_encoder,
 };
 
-/* flush an area of the framebuffer (in case of manual update display that
- * is not automatically flushed)
- */
-void omap_connector_flush(struct drm_connector *connector,
-		int x, int y, int w, int h)
-{
-	struct omap_connector *omap_connector = to_omap_connector(connector);
-
-	/* TODO: enable when supported in dss */
-	VERB("%s: %d,%d, %dx%d", omap_connector->dssdev->name, x, y, w, h);
-}
-
 /* initialize connector */
 struct drm_connector *omap_connector_init(struct drm_device *dev,
 		int connector_type, struct omap_dss_device *dssdev,

drivers/gpu/drm/omapdrm/omap_drv.h

@@ -186,8 +186,6 @@ struct drm_connector *omap_connector_init(struct drm_device *dev,
 		struct drm_encoder *encoder);
 struct drm_encoder *omap_connector_attached_encoder(
 		struct drm_connector *connector);
-void omap_connector_flush(struct drm_connector *connector,
-		int x, int y, int w, int h);
 bool omap_connector_get_hdmi_mode(struct drm_connector *connector);
 
 void copy_timings_omap_to_drm(struct drm_display_mode *mode,
@@ -208,8 +206,6 @@ void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
 		struct omap_drm_window *win, struct omap_overlay_info *info);
 struct drm_connector *omap_framebuffer_get_next_connector(
 		struct drm_framebuffer *fb, struct drm_connector *from);
-void omap_framebuffer_flush(struct drm_framebuffer *fb,
-		int x, int y, int w, int h);
 
 void omap_gem_init(struct drm_device *dev);
 void omap_gem_deinit(struct drm_device *dev);

drivers/gpu/drm/omapdrm/omap_fb.c

@@ -121,18 +121,6 @@ static int omap_framebuffer_dirty(struct drm_framebuffer *fb,
 		struct drm_file *file_priv, unsigned flags, unsigned color,
 		struct drm_clip_rect *clips, unsigned num_clips)
 {
-	int i;
-
-	drm_modeset_lock_all(fb->dev);
-
-	for (i = 0; i < num_clips; i++) {
-		omap_framebuffer_flush(fb, clips[i].x1, clips[i].y1,
-					clips[i].x2 - clips[i].x1,
-					clips[i].y2 - clips[i].y1);
-	}
-
-	drm_modeset_unlock_all(fb->dev);
-
 	return 0;
 }
 
@@ -336,34 +324,6 @@ struct drm_connector *omap_framebuffer_get_next_connector(
 	return NULL;
 }
 
-/* flush an area of the framebuffer (in case of manual update display that
- * is not automatically flushed)
- */
-void omap_framebuffer_flush(struct drm_framebuffer *fb,
-		int x, int y, int w, int h)
-{
-	struct drm_connector *connector = NULL;
-
-	VERB("flush: %d,%d %dx%d, fb=%p", x, y, w, h, fb);
-
-	/* FIXME: This is racy - no protection against modeset config changes. */
-	while ((connector = omap_framebuffer_get_next_connector(fb, connector))) {
-		/* only consider connectors that are part of a chain */
-		if (connector->encoder && connector->encoder->crtc) {
-			/* TODO: maybe this should propagate thru the crtc who
-			 * could do the coordinate translation..
-			 */
-			struct drm_crtc *crtc = connector->encoder->crtc;
-			int cx = max(0, x - crtc->x);
-			int cy = max(0, y - crtc->y);
-			int cw = w + (x - crtc->x) - cx;
-			int ch = h + (y - crtc->y) - cy;
-
-			omap_connector_flush(connector, cx, cy, cw, ch);
-		}
-	}
-}
-
 #ifdef CONFIG_DEBUG_FS
 void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
 {

drivers/gpu/drm/omapdrm/omap_fbdev.c

@@ -42,42 +42,8 @@ struct omap_fbdev {
 	struct work_struct work;
 };
 
-static void omap_fbdev_flush(struct fb_info *fbi, int x, int y, int w, int h);
 static struct drm_fb_helper *get_fb(struct fb_info *fbi);
 
-static ssize_t omap_fbdev_write(struct fb_info *fbi, const char __user *buf,
-		size_t count, loff_t *ppos)
-{
-	ssize_t res;
-
-	res = fb_sys_write(fbi, buf, count, ppos);
-	omap_fbdev_flush(fbi, 0, 0, fbi->var.xres, fbi->var.yres);
-
-	return res;
-}
-
-static void omap_fbdev_fillrect(struct fb_info *fbi,
-		const struct fb_fillrect *rect)
-{
-	sys_fillrect(fbi, rect);
-	omap_fbdev_flush(fbi, rect->dx, rect->dy, rect->width, rect->height);
-}
-
-static void omap_fbdev_copyarea(struct fb_info *fbi,
-		const struct fb_copyarea *area)
-{
-	sys_copyarea(fbi, area);
-	omap_fbdev_flush(fbi, area->dx, area->dy, area->width, area->height);
-}
-
-static void omap_fbdev_imageblit(struct fb_info *fbi,
-		const struct fb_image *image)
-{
-	sys_imageblit(fbi, image);
-	omap_fbdev_flush(fbi, image->dx, image->dy,
-				image->width, image->height);
-}
-
 static void pan_worker(struct work_struct *work)
 {
 	struct omap_fbdev *fbdev = container_of(work, struct omap_fbdev, work);
@@ -121,10 +87,10 @@ static struct fb_ops omap_fb_ops = {
 	 * basic fbdev ops which write to the framebuffer
 	 */
 	.fb_read = fb_sys_read,
-	.fb_write = omap_fbdev_write,
+	.fb_write = fb_sys_write,
-	.fb_fillrect = omap_fbdev_fillrect,
+	.fb_fillrect = sys_fillrect,
-	.fb_copyarea = omap_fbdev_copyarea,
+	.fb_copyarea = sys_copyarea,
-	.fb_imageblit = omap_fbdev_imageblit,
+	.fb_imageblit = sys_imageblit,
 
 	.fb_check_var = drm_fb_helper_check_var,
 	.fb_set_par = drm_fb_helper_set_par,
@@ -294,21 +260,6 @@ static struct drm_fb_helper *get_fb(struct fb_info *fbi)
 	return fbi->par;
 }
 
-/* flush an area of the framebuffer (in case of manual update display that
- * is not automatically flushed)
- */
-static void omap_fbdev_flush(struct fb_info *fbi, int x, int y, int w, int h)
-{
-	struct drm_fb_helper *helper = get_fb(fbi);
-
-	if (!helper)
-		return;
-
-	VERB("flush fbdev: %d,%d %dx%d, fbi=%p", x, y, w, h, fbi);
-
-	omap_framebuffer_flush(helper->fb, x, y, w, h);
-}
-
 /* initialize fbdev helper */
 struct drm_fb_helper *omap_fbdev_init(struct drm_device *dev)
 {

drivers/gpu/drm/omapdrm/omap_plane.c

@@ -162,7 +162,6 @@ static void omap_plane_post_apply(struct omap_drm_apply *apply)
 			container_of(apply, struct omap_plane, apply);
 	struct drm_plane *plane = &omap_plane->base;
 	struct omap_drm_private *priv = plane->dev->dev_private;
-	struct omap_overlay_info *info = &omap_plane->info;
 	struct callback cb;
 
 	cb = omap_plane->apply_done_cb;
@@ -172,11 +171,6 @@ static void omap_plane_post_apply(struct omap_drm_apply *apply)
 
 	if (cb.fxn)
 		cb.fxn(cb.arg);
-
-	if (omap_plane->enabled) {
-		omap_framebuffer_flush(plane->fb, info->pos_x, info->pos_y,
-				info->out_width, info->out_height);
-	}
 }
 
 static int apply(struct drm_plane *plane)