diff options
| -rw-r--r-- | drivers/video/video-uclass.c | 9 | ||||
| -rw-r--r-- | include/video.h | 12 |
2 files changed, 19 insertions, 2 deletions
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c index 6fc4128017..938e7d3713 100644 --- a/drivers/video/video-uclass.c +++ b/drivers/video/video-uclass.c @@ -175,6 +175,15 @@ void video_set_default_colors(struct udevice *dev, bool invert) /* Flush video activity to the caches */ int video_sync(struct udevice *vid, bool force) { + struct video_ops *ops = video_get_ops(vid); + int ret; + + if (ops && ops->video_sync) { + ret = ops->video_sync(vid); + if (ret) + return ret; + } + /* * flush_dcache_range() is declared in common.h but it seems that some * architectures do not actually implement it. Is there a way to find diff --git a/include/video.h b/include/video.h index 1bfe6843a8..12fc525ab4 100644 --- a/include/video.h +++ b/include/video.h @@ -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) @@ -155,7 +163,7 @@ int video_clear(struct udevice *dev); * @force: True to force a sync even if there was one recently (this is * very expensive on sandbox) * - * @return: 0 always + * @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 |