diff options
Diffstat (limited to 'include/video.h')
| -rw-r--r-- | include/video.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/video.h b/include/video.h index e7c58e86cb..1a0ffd8037 100644 --- a/include/video.h +++ b/include/video.h @@ -19,10 +19,25 @@ 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 { @@ -63,6 +78,8 @@ enum video_log2_bpp { * @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 @@ -89,6 +106,7 @@ struct video_priv { */ void *fb; int fb_size; + void *copy_fb; int line_length; u32 colour_fg; u32 colour_bg; @@ -202,6 +220,29 @@ void video_set_flush_dcache(struct udevice *dev, bool flush); */ void video_set_default_colors(struct udevice *dev, bool invert); +#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 + #endif /* CONFIG_DM_VIDEO */ #ifndef CONFIG_DM_VIDEO |