diff options
author | Simon Glass <sjg@chromium.org> | 2016-01-22 05:44:56 +0300 |
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committer | Simon Glass <sjg@chromium.org> | 2016-01-22 06:42:36 +0300 |
commit | 363bf77acc31bf0db66e1d942860d79339e29b88 (patch) | |
tree | 8443dffc47445836f252a6dec1efd6451ab37cc0 /drivers/video/backlight-uclass.c | |
parent | 0e23fd81a54f92655315a1bc3aec85d1a3dd9ae8 (diff) | |
download | u-boot-363bf77acc31bf0db66e1d942860d79339e29b88.tar.xz |
dm: backlight: Add a backlight uclass
LCD panels normally have a backlight which can be controlled to illuminate
the LCD contents. Add a uclass to support this. Initially it only has a
method to enable the backlight.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/video/backlight-uclass.c')
-rw-r--r-- | drivers/video/backlight-uclass.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/video/backlight-uclass.c b/drivers/video/backlight-uclass.c new file mode 100644 index 0000000000..0238289d1b --- /dev/null +++ b/drivers/video/backlight-uclass.c @@ -0,0 +1,25 @@ +/* + * Copyright (c) 2016 Google, Inc + * Written by Simon Glass <sjg@chromium.org> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <backlight.h> + +int backlight_enable(struct udevice *dev) +{ + const struct backlight_ops *ops = backlight_get_ops(dev); + + if (!ops->enable) + return -ENOSYS; + + return ops->enable(dev); +} + +UCLASS_DRIVER(backlight) = { + .id = UCLASS_PANEL_BACKLIGHT, + .name = "backlight", +}; |