pmic.c 4.5 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216
  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2014-2015 Samsung Electronics
  4. * Przemyslaw Marczak <p.marczak@samsung.com>
  5. */
  6. #include <common.h>
  7. #include <errno.h>
  8. #include <dm.h>
  9. #include <dm/uclass-internal.h>
  10. #include <power/pmic.h>
  11. #define LIMIT_DEV 32
  12. #define LIMIT_PARENT 20
  13. static struct udevice *currdev;
  14. static int failure(int ret)
  15. {
  16. printf("Error: %d (%s)\n", ret, errno_str(ret));
  17. return CMD_RET_FAILURE;
  18. }
  19. static int do_dev(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  20. {
  21. char *name;
  22. int ret = -ENODEV;
  23. switch (argc) {
  24. case 2:
  25. name = argv[1];
  26. ret = pmic_get(name, &currdev);
  27. if (ret) {
  28. printf("Can't get PMIC: %s!\n", name);
  29. return failure(ret);
  30. }
  31. case 1:
  32. if (!currdev) {
  33. printf("PMIC device is not set!\n\n");
  34. return CMD_RET_USAGE;
  35. }
  36. printf("dev: %d @ %s\n", currdev->seq, currdev->name);
  37. }
  38. return CMD_RET_SUCCESS;
  39. }
  40. static int do_list(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  41. {
  42. struct udevice *dev;
  43. int ret;
  44. printf("| %-*.*s| %-*.*s| %s @ %s\n",
  45. LIMIT_DEV, LIMIT_DEV, "Name",
  46. LIMIT_PARENT, LIMIT_PARENT, "Parent name",
  47. "Parent uclass", "seq");
  48. for (ret = uclass_first_device(UCLASS_PMIC, &dev); dev;
  49. ret = uclass_next_device(&dev)) {
  50. if (ret)
  51. continue;
  52. printf("| %-*.*s| %-*.*s| %s @ %d\n",
  53. LIMIT_DEV, LIMIT_DEV, dev->name,
  54. LIMIT_PARENT, LIMIT_PARENT, dev->parent->name,
  55. dev_get_uclass_name(dev->parent), dev->parent->seq);
  56. }
  57. if (ret)
  58. return CMD_RET_FAILURE;
  59. return CMD_RET_SUCCESS;
  60. }
  61. static int do_dump(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  62. {
  63. struct uc_pmic_priv *priv;
  64. struct udevice *dev;
  65. char fmt[16];
  66. uint reg;
  67. int ret;
  68. if (!currdev) {
  69. printf("First, set the PMIC device!\n");
  70. return CMD_RET_USAGE;
  71. }
  72. dev = currdev;
  73. priv = dev_get_uclass_priv(dev);
  74. printf("Dump pmic: %s registers\n", dev->name);
  75. sprintf(fmt, "%%%d.%dx ", priv->trans_len * 2,
  76. priv->trans_len * 2);
  77. for (reg = 0; reg < pmic_reg_count(dev); reg++) {
  78. ret = pmic_reg_read(dev, reg);
  79. if (ret < 0) {
  80. printf("Can't read register: %d\n", reg);
  81. return failure(ret);
  82. }
  83. if (!(reg % 16))
  84. printf("\n0x%02x: ", reg);
  85. printf(fmt, ret);
  86. }
  87. printf("\n");
  88. return CMD_RET_SUCCESS;
  89. }
  90. static int do_read(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  91. {
  92. struct uc_pmic_priv *priv;
  93. struct udevice *dev;
  94. int regs, ret;
  95. char fmt[24];
  96. uint reg;
  97. if (!currdev) {
  98. printf("First, set the PMIC device!\n");
  99. return CMD_RET_USAGE;
  100. }
  101. dev = currdev;
  102. priv = dev_get_uclass_priv(dev);
  103. if (argc != 2)
  104. return CMD_RET_USAGE;
  105. reg = simple_strtoul(argv[1], NULL, 0);
  106. regs = pmic_reg_count(dev);
  107. if (reg > regs) {
  108. printf("PMIC max reg: %d\n", regs);
  109. return failure(-EFAULT);
  110. }
  111. ret = pmic_reg_read(dev, reg);
  112. if (ret < 0) {
  113. printf("Can't read PMIC register: %d!\n", reg);
  114. return failure(ret);
  115. }
  116. sprintf(fmt, "0x%%02x: 0x%%%d.%dx\n", priv->trans_len * 2,
  117. priv->trans_len * 2);
  118. printf(fmt, reg, ret);
  119. return CMD_RET_SUCCESS;
  120. }
  121. static int do_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  122. {
  123. struct udevice *dev;
  124. uint reg, value;
  125. int regs, ret;
  126. if (!currdev) {
  127. printf("First, set the PMIC device!\n");
  128. return CMD_RET_USAGE;
  129. }
  130. dev = currdev;
  131. if (argc != 3)
  132. return CMD_RET_USAGE;
  133. reg = simple_strtoul(argv[1], NULL, 0);
  134. regs = pmic_reg_count(dev);
  135. if (reg > regs) {
  136. printf("PMIC max reg: %d\n", regs);
  137. return failure(-EFAULT);
  138. }
  139. value = simple_strtoul(argv[2], NULL, 0);
  140. ret = pmic_reg_write(dev, reg, value);
  141. if (ret) {
  142. printf("Can't write PMIC register: %d!\n", reg);
  143. return failure(ret);
  144. }
  145. return CMD_RET_SUCCESS;
  146. }
  147. static cmd_tbl_t subcmd[] = {
  148. U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
  149. U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
  150. U_BOOT_CMD_MKENT(dump, 1, 1, do_dump, "", ""),
  151. U_BOOT_CMD_MKENT(read, 2, 1, do_read, "", ""),
  152. U_BOOT_CMD_MKENT(write, 3, 1, do_write, "", ""),
  153. };
  154. static int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc,
  155. char * const argv[])
  156. {
  157. cmd_tbl_t *cmd;
  158. argc--;
  159. argv++;
  160. cmd = find_cmd_tbl(argv[0], subcmd, ARRAY_SIZE(subcmd));
  161. if (cmd == NULL || argc > cmd->maxargs)
  162. return CMD_RET_USAGE;
  163. return cmd->cmd(cmdtp, flag, argc, argv);
  164. }
  165. U_BOOT_CMD(pmic, CONFIG_SYS_MAXARGS, 1, do_pmic,
  166. "PMIC sub-system",
  167. "list - list pmic devices\n"
  168. "pmic dev [name] - show or [set] operating PMIC device\n"
  169. "pmic dump - dump registers\n"
  170. "pmic read address - read byte of register at address\n"
  171. "pmic write address - write byte to register at address\n"
  172. );