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| author | Simon Glass <sjg@chromium.org> | 2016-01-21 19:44:56 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-01-21 20:42:36 -0700 |
| commit | 363bf77acc31bf0db66e1d942860d79339e29b88 (patch) | |
| tree | 8443dffc47445836f252a6dec1efd6451ab37cc0 /include/backlight.h | |
| parent | 0e23fd81a54f92655315a1bc3aec85d1a3dd9ae8 (diff) | |
| download | u-boot-363bf77acc31bf0db66e1d942860d79339e29b88.tar.gz u-boot-363bf77acc31bf0db66e1d942860d79339e29b88.tar.bz2 u-boot-363bf77acc31bf0db66e1d942860d79339e29b88.zip | |
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 'include/backlight.h')
| -rw-r--r-- | include/backlight.h | 31 |
1 files changed, 31 insertions, 0 deletions
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 <sjg@chromium.org> + * + * 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 |