From 1b68283b64a7a1847410eff20886bd7bbfd8f9a6 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 13 Nov 2016 14:22:07 -0700 Subject: 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 --- drivers/video/display-uclass.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'drivers/video/display-uclass.c') diff --git a/drivers/video/display-uclass.c b/drivers/video/display-uclass.c index e4763de73d..e752eb07c4 100644 --- a/drivers/video/display-uclass.c +++ b/drivers/video/display-uclass.c @@ -23,10 +23,19 @@ int display_enable(struct udevice *dev, int panel_bpp, const struct display_timing *timing) { struct dm_display_ops *ops = display_get_ops(dev); + struct display_plat *disp_uc_plat; + int ret; if (!ops || !ops->enable) return -ENOSYS; - return ops->enable(dev, panel_bpp, timing); + ret = ops->enable(dev, panel_bpp, timing); + if (ret) + return ret; + + disp_uc_plat = dev_get_uclass_platdata(dev); + disp_uc_plat->in_use = true; + + return 0; } int display_read_timing(struct udevice *dev, struct display_timing *timing) @@ -48,6 +57,13 @@ int display_read_timing(struct udevice *dev, struct display_timing *timing) return edid_get_timing(buf, ret, timing, &panel_bits_per_colour); } +bool display_in_use(struct udevice *dev) +{ + struct display_plat *disp_uc_plat = dev_get_uclass_platdata(dev); + + return disp_uc_plat->in_use; +} + UCLASS_DRIVER(display) = { .id = UCLASS_DISPLAY, .name = "display", -- cgit v1.2.1