clk.c 1.4 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2019 DENX Software Engineering
  4. * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
  5. */
  6. #include <common.h>
  7. #include <clk-uclass.h>
  8. #include <dm/device.h>
  9. #include <dm/uclass.h>
  10. #include <dm/lists.h>
  11. #include <dm/device-internal.h>
  12. #include <clk.h>
  13. int clk_register(struct clk *clk, const char *drv_name,
  14. const char *name, const char *parent_name)
  15. {
  16. struct udevice *parent;
  17. struct driver *drv;
  18. int ret;
  19. ret = uclass_get_device_by_name(UCLASS_CLK, parent_name, &parent);
  20. if (ret) {
  21. printf("%s: name: %s parent: %s [0x%p]\n",
  22. __func__, name, parent->name, parent);
  23. }
  24. debug("%s: name: %s parent: %s [0x%p]\n", __func__, name, parent->name,
  25. parent);
  26. drv = lists_driver_lookup_name(drv_name);
  27. if (!drv) {
  28. printf("%s: %s is not a valid driver name\n",
  29. __func__, drv_name);
  30. return -ENOENT;
  31. }
  32. ret = device_bind(parent, drv, name, NULL, -1, &clk->dev);
  33. if (ret) {
  34. printf("%s: CLK: %s driver bind error [%d]!\n", __func__, name,
  35. ret);
  36. return ret;
  37. }
  38. clk->enable_count = 0;
  39. /* Store back pointer to clk from udevice */
  40. clk->dev->uclass_priv = clk;
  41. return 0;
  42. }
  43. ulong clk_generic_get_rate(struct clk *clk)
  44. {
  45. return clk_get_parent_rate(clk);
  46. }
  47. const char *clk_hw_get_name(const struct clk *hw)
  48. {
  49. return hw->dev->name;
  50. }
  51. bool clk_dev_binded(struct clk *clk)
  52. {
  53. if (clk->dev && (clk->dev->flags & DM_FLAG_BOUND))
  54. return true;
  55. return false;
  56. }