backlight-uclass.c 704 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. #define LOG_CATEGORY UCLASS_PANEL_BACKLIGHT
  7. #include <common.h>
  8. #include <dm.h>
  9. #include <backlight.h>
  10. int backlight_enable(struct udevice *dev)
  11. {
  12. const struct backlight_ops *ops = backlight_get_ops(dev);
  13. if (!ops->enable)
  14. return -ENOSYS;
  15. return ops->enable(dev);
  16. }
  17. int backlight_set_brightness(struct udevice *dev, int percent)
  18. {
  19. const struct backlight_ops *ops = backlight_get_ops(dev);
  20. if (!ops->set_brightness)
  21. return -ENOSYS;
  22. return ops->set_brightness(dev, percent);
  23. }
  24. UCLASS_DRIVER(backlight) = {
  25. .id = UCLASS_PANEL_BACKLIGHT,
  26. .name = "backlight",
  27. };