max8998.c 1.1 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2016 Samsung Electronics
  4. * Jaehoon Chung <jh80.chung@samsung.com>
  5. */
  6. #include <common.h>
  7. #include <dm.h>
  8. #include <errno.h>
  9. #include <i2c.h>
  10. #include <power/pmic.h>
  11. #include <power/max8998_pmic.h>
  12. static int max8998_reg_count(struct udevice *dev)
  13. {
  14. return PMIC_NUM_OF_REGS;
  15. }
  16. static int max8998_write(struct udevice *dev, uint reg, const uint8_t *buff,
  17. int len)
  18. {
  19. int ret;
  20. ret = dm_i2c_write(dev, reg, buff, len);
  21. if (ret)
  22. pr_err("write error to device: %p register: %#x!\n", dev, reg);
  23. return ret;
  24. }
  25. static int max8998_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
  26. {
  27. int ret;
  28. ret = dm_i2c_read(dev, reg, buff, len);
  29. if (ret)
  30. pr_err("read error from device: %p register: %#x!\n", dev, reg);
  31. return ret;
  32. }
  33. static struct dm_pmic_ops max8998_ops = {
  34. .reg_count = max8998_reg_count,
  35. .read = max8998_read,
  36. .write = max8998_write,
  37. };
  38. static const struct udevice_id max8998_ids[] = {
  39. { .compatible = "maxim,max8998" },
  40. { }
  41. };
  42. U_BOOT_DRIVER(pmic_max8998) = {
  43. .name = "max8998_pmic",
  44. .id = UCLASS_PMIC,
  45. .of_match = max8998_ids,
  46. .ops = &max8998_ops,
  47. };