#ifndef _VIDEO_H_
#define _VIDEO_H_
-#ifdef CONFIG_DM_VIDEO
-
#include <stdio_dev.h>
+struct udevice;
+
+/**
+ * struct video_uc_platdata - uclass platform data for a video device
+ *
+ * This holds information that the uclass needs to know about each device. It
+ * is accessed using dev_get_uclass_platdata(dev). See 'Theory of operation' at
+ * the top of video-uclass.c for details on how this information is set.
+ *
+ * @align: Frame-buffer alignment, indicating the memory boundary the frame
+ * buffer should start on. If 0, 1MB is assumed
+ * @size: Frame-buffer size, in bytes
+ * @base: Base address of frame buffer, 0 if not yet known
+ * @copy_base: Base address of a hardware copy of the frame buffer. See
+ * CONFIG_VIDEO_COPY.
+ */
struct video_uc_platdata {
uint align;
uint size;
ulong base;
+ ulong copy_base;
};
enum video_polarity {
* @font_size: Font size in pixels (0 to use a default value)
* @fb: Frame buffer
* @fb_size: Frame buffer size
+ * @copy_fb: Copy of the frame buffer to keep up to date; see struct
+ * video_uc_platdata
* @line_length: Length of each frame buffer line, in bytes. This can be
* set by the driver, but if not, the uclass will set it after
* probing
*/
void *fb;
int fb_size;
+ void *copy_fb;
int line_length;
u32 colour_fg;
u32 colour_bg;
*/
int video_reserve(ulong *addrp);
+#ifdef CONFIG_DM_VIDEO
/**
* video_clear() - Clear a device's frame buffer to background color.
*
* @return 0
*/
int video_clear(struct udevice *dev);
+#endif /* CONFIG_DM_VIDEO */
/**
* video_sync() - Sync a device's frame buffer with its hardware
*/
void video_set_default_colors(struct udevice *dev, bool invert);
-#endif /* CONFIG_DM_VIDEO */
+#ifdef CONFIG_VIDEO_COPY
+/**
+ * vidconsole_sync_copy() - Sync back to the copy framebuffer
+ *
+ * This ensures that the copy framebuffer has the same data as the framebuffer
+ * for a particular region. It should be called after the framebuffer is updated
+ *
+ * @from and @to can be in either order. The region between them is synced.
+ *
+ * @dev: Vidconsole device being updated
+ * @from: Start/end address within the framebuffer (->fb)
+ * @to: Other address within the frame buffer
+ * @return 0 if OK, -EFAULT if the start address is before the start of the
+ * frame buffer start
+ */
+int video_sync_copy(struct udevice *dev, void *from, void *to);
+#else
+static inline int video_sync_copy(struct udevice *dev, void *from, void *to)
+{
+ return 0;
+}
+#endif
#ifndef CONFIG_DM_VIDEO