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| author | Simon Glass <sjg@chromium.org> | 2016-11-13 14:22:07 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-11-25 17:59:31 -0700 |
| commit | 1b68283b64a7a1847410eff20886bd7bbfd8f9a6 (patch) | |
| tree | 223069f02f6b0612d54217498c596c8e1bc3f1ce /include/display.h | |
| parent | 7981394e550094bbbb2eb5e62065fa14c2ca77b0 (diff) | |
| download | u-boot-1b68283b64a7a1847410eff20886bd7bbfd8f9a6.tar.gz | |
video: Track whether a display is in use
Mark a display as in use when display_enable() is called. This can avoid
a display being used by multiple video-output devices.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/display.h')
| -rw-r--r-- | include/display.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/display.h b/include/display.h index b1c476628b..d0a08d4aaa 100644 --- a/include/display.h +++ b/include/display.h @@ -16,10 +16,12 @@ struct display_timing; * @source_id: ID for the source of the display data, typically a video * controller * @src_dev: Source device providing the video + * @in_use: Display is being used */ struct display_plat { int source_id; struct udevice *src_dev; + bool in_use; }; /** @@ -41,6 +43,14 @@ int display_read_timing(struct udevice *dev, struct display_timing *timing); int display_enable(struct udevice *dev, int panel_bpp, const struct display_timing *timing); +/** + * display_in_use() - Check if a display is in use by any device + * + * @return true if the device is in use (display_enable() has been called + * successfully), else false + */ +bool display_in_use(struct udevice *dev); + struct dm_display_ops { /** * read_timing() - Read information directly |