backlight-uclass.c 659 B

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (c) 2016 Google, Inc
  4. * Written by Simon Glass <sjg@chromium.org>
  5. */
  6. #include <common.h>
  7. #include <dm.h>
  8. #include <backlight.h>
  9. int backlight_enable(struct udevice *dev)
  10. {
  11. const struct backlight_ops *ops = backlight_get_ops(dev);
  12. if (!ops->enable)
  13. return -ENOSYS;
  14. return ops->enable(dev);
  15. }
  16. int backlight_set_brightness(struct udevice *dev, int percent)
  17. {
  18. const struct backlight_ops *ops = backlight_get_ops(dev);
  19. if (!ops->set_brightness)
  20. return -ENOSYS;
  21. return ops->set_brightness(dev, percent);
  22. }
  23. UCLASS_DRIVER(backlight) = {
  24. .id = UCLASS_PANEL_BACKLIGHT,
  25. .name = "backlight",
  26. };