diff options
| 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 /drivers | |
| parent | 0e23fd81a54f92655315a1bc3aec85d1a3dd9ae8 (diff) | |
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')
| -rw-r--r-- | drivers/video/Makefile | 1 | ||||
| -rw-r--r-- | drivers/video/backlight-uclass.c | 25 |
2 files changed, 26 insertions, 0 deletions
diff --git a/drivers/video/Makefile b/drivers/video/Makefile index ee046296e61..fa907210cf6 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -7,6 +7,7 @@ ifdef CONFIG_DM obj-$(CONFIG_DISPLAY_PORT) += dp-uclass.o +obj-$(CONFIG_DM_VIDEO) += backlight-uclass.o obj-$(CONFIG_DM_VIDEO) += video-uclass.o vidconsole-uclass.o console_normal.o obj-$(CONFIG_DM_VIDEO) += video_bmp.o obj-$(CONFIG_VIDEO_ROTATION) += console_rotate.o diff --git a/drivers/video/backlight-uclass.c b/drivers/video/backlight-uclass.c new file mode 100644 index 00000000000..0238289d1b3 --- /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", +}; |