pmc.c 1.5 KB

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  1. // SPDX-License-Identifier: GPL-2.0
  2. /*
  3. * Intel PMC command
  4. *
  5. * Copyright 2019 Google LLC
  6. */
  7. #include <common.h>
  8. #include <command.h>
  9. #include <dm.h>
  10. #include <power/acpi_pmc.h>
  11. static int get_pmc_dev(struct udevice **devp)
  12. {
  13. struct udevice *dev;
  14. int ret;
  15. ret = uclass_first_device_err(UCLASS_ACPI_PMC, &dev);
  16. if (ret) {
  17. printf("Could not find device (err=%d)\n", ret);
  18. return ret;
  19. }
  20. ret = pmc_init(dev);
  21. if (ret) {
  22. printf("Could not init device (err=%d)\n", ret);
  23. return ret;
  24. }
  25. *devp = dev;
  26. return 0;
  27. }
  28. static int do_pmc_init(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  29. {
  30. struct udevice *dev;
  31. int ret;
  32. ret = get_pmc_dev(&dev);
  33. if (ret)
  34. return CMD_RET_FAILURE;
  35. return 0;
  36. }
  37. static int do_pmc_info(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  38. {
  39. struct udevice *dev;
  40. int ret;
  41. ret = get_pmc_dev(&dev);
  42. if (ret)
  43. return CMD_RET_FAILURE;
  44. pmc_dump_info(dev);
  45. return 0;
  46. }
  47. static cmd_tbl_t cmd_pmc_sub[] = {
  48. U_BOOT_CMD_MKENT(init, 0, 1, do_pmc_init, "", ""),
  49. U_BOOT_CMD_MKENT(info, 0, 1, do_pmc_info, "", ""),
  50. };
  51. static int do_pmc(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  52. {
  53. const cmd_tbl_t *cp;
  54. if (argc < 2) /* no subcommand */
  55. return cmd_usage(cmdtp);
  56. cp = find_cmd_tbl(argv[1], &cmd_pmc_sub[0], ARRAY_SIZE(cmd_pmc_sub));
  57. if (!cp)
  58. return CMD_RET_USAGE;
  59. return cp->cmd(cmdtp, flag, argc, argv);
  60. }
  61. U_BOOT_CMD(
  62. pmc, 2, 1, do_pmc, "Power-management controller info",
  63. "info - read state and show info about the PMC\n"
  64. "pmc init - read state from the PMC\n"
  65. );