pinmux.c 3.3 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
  4. */
  5. #include <common.h>
  6. #include <command.h>
  7. #include <dm.h>
  8. #include <errno.h>
  9. #include <dm/pinctrl.h>
  10. #include <dm/uclass-internal.h>
  11. #define LIMIT_DEVNAME 30
  12. static struct udevice *currdev;
  13. static int do_dev(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  14. {
  15. const char *name;
  16. int ret;
  17. switch (argc) {
  18. case 2:
  19. name = argv[1];
  20. ret = uclass_get_device_by_name(UCLASS_PINCTRL, name, &currdev);
  21. if (ret) {
  22. printf("Can't get the pin-controller: %s!\n", name);
  23. return CMD_RET_FAILURE;
  24. }
  25. case 1:
  26. if (!currdev) {
  27. printf("Pin-controller device is not set!\n");
  28. return CMD_RET_USAGE;
  29. }
  30. printf("dev: %s\n", currdev->name);
  31. }
  32. return CMD_RET_SUCCESS;
  33. }
  34. static int show_pinmux(struct udevice *dev)
  35. {
  36. char pin_name[PINNAME_SIZE];
  37. char pin_mux[PINMUX_SIZE];
  38. int pins_count;
  39. int i;
  40. int ret;
  41. pins_count = pinctrl_get_pins_count(dev);
  42. if (pins_count == -ENOSYS) {
  43. printf("Ops get_pins_count not supported\n");
  44. return pins_count;
  45. }
  46. for (i = 0; i < pins_count; i++) {
  47. ret = pinctrl_get_pin_name(dev, i, pin_name, PINNAME_SIZE);
  48. if (ret == -ENOSYS) {
  49. printf("Ops get_pin_name not supported\n");
  50. return ret;
  51. }
  52. ret = pinctrl_get_pin_muxing(dev, i, pin_mux, PINMUX_SIZE);
  53. if (ret) {
  54. printf("Ops get_pin_muxing error (%d)\n", ret);
  55. return ret;
  56. }
  57. printf("%-*s: %-*s\n", PINNAME_SIZE, pin_name,
  58. PINMUX_SIZE, pin_mux);
  59. }
  60. return 0;
  61. }
  62. static int do_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  63. {
  64. struct udevice *dev;
  65. int ret = CMD_RET_USAGE;
  66. if (currdev && (argc < 2 || strcmp(argv[1], "-a")))
  67. return show_pinmux(currdev);
  68. if (argc < 2 || strcmp(argv[1], "-a"))
  69. return ret;
  70. uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
  71. /* insert a separator between each pin-controller display */
  72. printf("--------------------------\n");
  73. printf("%s:\n", dev->name);
  74. ret = show_pinmux(dev);
  75. if (ret < 0)
  76. printf("Can't display pin muxing for %s\n",
  77. dev->name);
  78. }
  79. return ret;
  80. }
  81. static int do_list(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  82. {
  83. struct udevice *dev;
  84. printf("| %-*.*s| %-*.*s| %s\n",
  85. LIMIT_DEVNAME, LIMIT_DEVNAME, "Device",
  86. LIMIT_DEVNAME, LIMIT_DEVNAME, "Driver",
  87. "Parent");
  88. uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
  89. printf("| %-*.*s| %-*.*s| %s\n",
  90. LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
  91. LIMIT_DEVNAME, LIMIT_DEVNAME, dev->driver->name,
  92. dev->parent->name);
  93. }
  94. return CMD_RET_SUCCESS;
  95. }
  96. static cmd_tbl_t pinmux_subcmd[] = {
  97. U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
  98. U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
  99. U_BOOT_CMD_MKENT(status, 2, 1, do_status, "", ""),
  100. };
  101. static int do_pinmux(cmd_tbl_t *cmdtp, int flag, int argc,
  102. char * const argv[])
  103. {
  104. cmd_tbl_t *cmd;
  105. argc--;
  106. argv++;
  107. cmd = find_cmd_tbl(argv[0], pinmux_subcmd, ARRAY_SIZE(pinmux_subcmd));
  108. if (!cmd || argc > cmd->maxargs)
  109. return CMD_RET_USAGE;
  110. return cmd->cmd(cmdtp, flag, argc, argv);
  111. }
  112. U_BOOT_CMD(pinmux, CONFIG_SYS_MAXARGS, 1, do_pinmux,
  113. "show pin-controller muxing",
  114. "list - list UCLASS_PINCTRL devices\n"
  115. "pinmux dev [pincontroller-name] - select pin-controller device\n"
  116. "pinmux status [-a] - print pin-controller muxing [for all]\n"
  117. )