From 363bf77acc31bf0db66e1d942860d79339e29b88 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Thu, 21 Jan 2016 19:44:56 -0700 Subject: 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 --- include/backlight.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 include/backlight.h (limited to 'include/backlight.h') diff --git a/include/backlight.h b/include/backlight.h new file mode 100644 index 0000000000..90e1d981e1 --- /dev/null +++ b/include/backlight.h @@ -0,0 +1,31 @@ +/* + * Copyright (c) 2016 Google, Inc + * Written by Simon Glass + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _BACKLIGHT_H +#define _BACKLIGHT_H + +struct backlight_ops { + /** + * enable() - Enable a backlight + * + * @dev: Backlight device to enable + * @return 0 if OK, -ve on error + */ + int (*enable)(struct udevice *dev); +}; + +#define backlight_get_ops(dev) ((struct backlight_ops *)(dev)->driver->ops) + +/** + * backlight_enable() - Enable a backlight + * + * @dev: Backlight device to enable + * @return 0 if OK, -ve on error + */ +int backlight_enable(struct udevice *dev); + +#endif -- cgit v1.2.3