diff options
Diffstat (limited to 'include/video.h')
| -rw-r--r-- | include/video.h | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/include/video.h b/include/video.h index 9d09d2409a..74d822fadb 100644 --- a/include/video.h +++ b/include/video.h @@ -18,10 +18,10 @@ struct udevice; /** - * struct video_uc_platdata - uclass platform data for a video device + * struct video_uc_plat - 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 + * is accessed using dev_get_uclass_plat(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 @@ -31,7 +31,7 @@ struct udevice; * @copy_base: Base address of a hardware copy of the frame buffer. See * CONFIG_VIDEO_COPY. */ -struct video_uc_platdata { +struct video_uc_plat { uint align; uint size; ulong base; @@ -77,7 +77,7 @@ enum video_log2_bpp { * @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 + * video_uc_plat * @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 @@ -114,8 +114,16 @@ struct video_priv { u8 bg_col_idx; }; -/* Placeholder - there are no video operations at present */ +/** + * struct video_ops - structure for keeping video operations + * @video_sync: Synchronize FB with device. Some device like SPI based LCD + * displays needs synchronization when data in an FB is available. + * For these devices implement video_sync hook to call a sync + * function. vid is pointer to video device udevice. Function + * should return 0 on success video_sync and error code otherwise + */ struct video_ops { + int (*video_sync)(struct udevice *vid); }; #define video_get_ops(dev) ((struct video_ops *)(dev)->driver->ops) @@ -125,7 +133,7 @@ struct video_ops { * * Note: This function is for internal use. * - * This uses the uclass platdata's @size and @align members to figure out + * This uses the uclass plat's @size and @align members to figure out * a size and position for each frame buffer as part of the pre-relocation * process of determining the post-relocation memory layout. * @@ -151,15 +159,17 @@ int video_clear(struct udevice *dev); /** * video_sync() - Sync a device's frame buffer with its hardware * + * @vid: Device to sync + * @force: True to force a sync even if there was one recently (this is + * very expensive on sandbox) + * + * @return: 0 on success, error code otherwise + * * Some frame buffers are cached or have a secondary frame buffer. This * function syncs these up so that the current contents of the U-Boot frame * buffer are displayed to the user. - * - * @dev: Device to sync - * @force: True to force a sync even if there was one recently (this is - * very expensive on sandbox) */ -void video_sync(struct udevice *vid, bool force); +int video_sync(struct udevice *vid, bool force); /** * video_sync_all() - Sync all devices' frame buffers with there hardware |