rn5t618-regulator.c 5.4 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * Regulator driver for Ricoh RN5T618 PMIC
  4. *
  5. * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
  6. */
  7. #include <linux/mfd/rn5t618.h>
  8. #include <linux/module.h>
  9. #include <linux/of.h>
  10. #include <linux/platform_device.h>
  11. #include <linux/regmap.h>
  12. #include <linux/regulator/driver.h>
  13. #include <linux/regulator/of_regulator.h>
  14. static const struct regulator_ops rn5t618_reg_ops = {
  15. .enable = regulator_enable_regmap,
  16. .disable = regulator_disable_regmap,
  17. .is_enabled = regulator_is_enabled_regmap,
  18. .set_voltage_sel = regulator_set_voltage_sel_regmap,
  19. .get_voltage_sel = regulator_get_voltage_sel_regmap,
  20. .list_voltage = regulator_list_voltage_linear,
  21. };
  22. #define REG(rid, ereg, emask, vreg, vmask, min, max, step) \
  23. { \
  24. .name = #rid, \
  25. .of_match = of_match_ptr(#rid), \
  26. .regulators_node = of_match_ptr("regulators"), \
  27. .id = RN5T618_##rid, \
  28. .type = REGULATOR_VOLTAGE, \
  29. .owner = THIS_MODULE, \
  30. .ops = &rn5t618_reg_ops, \
  31. .n_voltages = ((max) - (min)) / (step) + 1, \
  32. .min_uV = (min), \
  33. .uV_step = (step), \
  34. .enable_reg = RN5T618_##ereg, \
  35. .enable_mask = (emask), \
  36. .vsel_reg = RN5T618_##vreg, \
  37. .vsel_mask = (vmask), \
  38. }
  39. static const struct regulator_desc rn5t567_regulators[] = {
  40. /* DCDC */
  41. REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
  42. REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
  43. REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
  44. REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500),
  45. /* LDO */
  46. REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
  47. REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
  48. REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000),
  49. REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
  50. REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000),
  51. /* LDO RTC */
  52. REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1200000, 3500000, 25000),
  53. REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
  54. };
  55. static const struct regulator_desc rn5t618_regulators[] = {
  56. /* DCDC */
  57. REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
  58. REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
  59. REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
  60. /* LDO */
  61. REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
  62. REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
  63. REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000),
  64. REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
  65. REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000),
  66. /* LDO RTC */
  67. REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000),
  68. REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
  69. };
  70. static const struct regulator_desc rc5t619_regulators[] = {
  71. /* DCDC */
  72. REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
  73. REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
  74. REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
  75. REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500),
  76. REG(DCDC5, DC5CTL, BIT(0), DC5DAC, 0xff, 600000, 3500000, 12500),
  77. /* LDO */
  78. REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
  79. REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
  80. REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 900000, 3500000, 25000),
  81. REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
  82. REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 600000, 3500000, 25000),
  83. REG(LDO6, LDOEN1, BIT(5), LDO6DAC, 0x7f, 600000, 3500000, 25000),
  84. REG(LDO7, LDOEN1, BIT(6), LDO7DAC, 0x7f, 900000, 3500000, 25000),
  85. REG(LDO8, LDOEN1, BIT(7), LDO8DAC, 0x7f, 900000, 3500000, 25000),
  86. REG(LDO9, LDOEN2, BIT(0), LDO9DAC, 0x7f, 900000, 3500000, 25000),
  87. REG(LDO10, LDOEN2, BIT(1), LDO10DAC, 0x7f, 900000, 3500000, 25000),
  88. /* LDO RTC */
  89. REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000),
  90. REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
  91. };
  92. static int rn5t618_regulator_probe(struct platform_device *pdev)
  93. {
  94. struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent);
  95. struct regulator_config config = { };
  96. struct regulator_dev *rdev;
  97. const struct regulator_desc *regulators;
  98. int i;
  99. int num_regulators = 0;
  100. switch (rn5t618->variant) {
  101. case RN5T567:
  102. regulators = rn5t567_regulators;
  103. num_regulators = ARRAY_SIZE(rn5t567_regulators);
  104. break;
  105. case RN5T618:
  106. regulators = rn5t618_regulators;
  107. num_regulators = ARRAY_SIZE(rn5t618_regulators);
  108. break;
  109. case RC5T619:
  110. regulators = rc5t619_regulators;
  111. num_regulators = ARRAY_SIZE(rc5t619_regulators);
  112. break;
  113. default:
  114. return -EINVAL;
  115. }
  116. config.dev = pdev->dev.parent;
  117. config.regmap = rn5t618->regmap;
  118. for (i = 0; i < num_regulators; i++) {
  119. rdev = devm_regulator_register(&pdev->dev,
  120. &regulators[i],
  121. &config);
  122. if (IS_ERR(rdev)) {
  123. dev_err(&pdev->dev, "failed to register %s regulator\n",
  124. regulators[i].name);
  125. return PTR_ERR(rdev);
  126. }
  127. }
  128. return 0;
  129. }
  130. static struct platform_driver rn5t618_regulator_driver = {
  131. .probe = rn5t618_regulator_probe,
  132. .driver = {
  133. .name = "rn5t618-regulator",
  134. },
  135. };
  136. module_platform_driver(rn5t618_regulator_driver);
  137. MODULE_ALIAS("platform:rn5t618-regulator");
  138. MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
  139. MODULE_DESCRIPTION("RN5T618 regulator driver");
  140. MODULE_LICENSE("GPL v2");