Add the helper function video_is_active() to test if one video device is active.
This function can be used in board code to execute operation only when the display is probed / really used.
Signed-off-by: Patrick Delaunay patrick.delaunay@foss.st.com ---
drivers/video/video-uclass.c | 14 ++++++++++++++ include/video.h | 7 +++++++ 2 files changed, 21 insertions(+)
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c index 9f8cf6ef2a..43ebb3c565 100644 --- a/drivers/video/video-uclass.c +++ b/drivers/video/video-uclass.c @@ -228,6 +228,20 @@ void video_sync_all(void) } }
+bool video_is_active(void) +{ + struct udevice *dev; + + for (uclass_find_first_device(UCLASS_VIDEO, &dev); + dev; + uclass_find_next_device(&dev)) { + if (device_active(dev)) + return true; + } + + return false; +} + int video_get_xsize(struct udevice *dev) { struct video_priv *priv = dev_get_uclass_priv(dev); diff --git a/include/video.h b/include/video.h index f14fb15f84..5ac1387a39 100644 --- a/include/video.h +++ b/include/video.h @@ -276,6 +276,13 @@ static inline int video_sync_copy_all(struct udevice *dev)
#endif
+/** + * video_is_active() - Test if one video device it active + * + * @return true if at least one video device is active, else false. + */ +bool video_is_active(void); + #ifndef CONFIG_DM_VIDEO
/* Video functions */