88pm800-regulator.c 9.2 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * Regulators driver for Marvell 88PM800
  4. *
  5. * Copyright (C) 2012 Marvell International Ltd.
  6. * Joseph(Yossi) Hanin <yhanin@marvell.com>
  7. * Yi Zhang <yizhang@marvell.com>
  8. */
  9. #include <linux/module.h>
  10. #include <linux/moduleparam.h>
  11. #include <linux/init.h>
  12. #include <linux/err.h>
  13. #include <linux/regmap.h>
  14. #include <linux/regulator/driver.h>
  15. #include <linux/regulator/machine.h>
  16. #include <linux/mfd/88pm80x.h>
  17. #include <linux/delay.h>
  18. #include <linux/io.h>
  19. #include <linux/of.h>
  20. #include <linux/regulator/of_regulator.h>
  21. /* LDO1 with DVC[0..3] */
  22. #define PM800_LDO1_VOUT (0x08) /* VOUT1 */
  23. #define PM800_LDO1_VOUT_2 (0x09)
  24. #define PM800_LDO1_VOUT_3 (0x0A)
  25. #define PM800_LDO2_VOUT (0x0B)
  26. #define PM800_LDO3_VOUT (0x0C)
  27. #define PM800_LDO4_VOUT (0x0D)
  28. #define PM800_LDO5_VOUT (0x0E)
  29. #define PM800_LDO6_VOUT (0x0F)
  30. #define PM800_LDO7_VOUT (0x10)
  31. #define PM800_LDO8_VOUT (0x11)
  32. #define PM800_LDO9_VOUT (0x12)
  33. #define PM800_LDO10_VOUT (0x13)
  34. #define PM800_LDO11_VOUT (0x14)
  35. #define PM800_LDO12_VOUT (0x15)
  36. #define PM800_LDO13_VOUT (0x16)
  37. #define PM800_LDO14_VOUT (0x17)
  38. #define PM800_LDO15_VOUT (0x18)
  39. #define PM800_LDO16_VOUT (0x19)
  40. #define PM800_LDO17_VOUT (0x1A)
  41. #define PM800_LDO18_VOUT (0x1B)
  42. #define PM800_LDO19_VOUT (0x1C)
  43. /* BUCK1 with DVC[0..3] */
  44. #define PM800_BUCK1 (0x3C)
  45. #define PM800_BUCK1_1 (0x3D)
  46. #define PM800_BUCK1_2 (0x3E)
  47. #define PM800_BUCK1_3 (0x3F)
  48. #define PM800_BUCK2 (0x40)
  49. #define PM800_BUCK3 (0x41)
  50. #define PM800_BUCK4 (0x42)
  51. #define PM800_BUCK4_1 (0x43)
  52. #define PM800_BUCK4_2 (0x44)
  53. #define PM800_BUCK4_3 (0x45)
  54. #define PM800_BUCK5 (0x46)
  55. #define PM800_BUCK_ENA (0x50)
  56. #define PM800_LDO_ENA1_1 (0x51)
  57. #define PM800_LDO_ENA1_2 (0x52)
  58. #define PM800_LDO_ENA1_3 (0x53)
  59. #define PM800_LDO_ENA2_1 (0x56)
  60. #define PM800_LDO_ENA2_2 (0x57)
  61. #define PM800_LDO_ENA2_3 (0x58)
  62. #define PM800_BUCK1_MISC1 (0x78)
  63. #define PM800_BUCK3_MISC1 (0x7E)
  64. #define PM800_BUCK4_MISC1 (0x81)
  65. #define PM800_BUCK5_MISC1 (0x84)
  66. struct pm800_regulator_info {
  67. struct regulator_desc desc;
  68. int max_ua;
  69. };
  70. /*
  71. * vreg - the buck regs string.
  72. * ereg - the string for the enable register.
  73. * ebit - the bit number in the enable register.
  74. * amax - the current
  75. * Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges,
  76. * not the constant voltage table.
  77. * n_volt - Number of available selectors
  78. */
  79. #define PM800_BUCK(match, vreg, ereg, ebit, amax, volt_ranges, n_volt) \
  80. { \
  81. .desc = { \
  82. .name = #vreg, \
  83. .of_match = of_match_ptr(#match), \
  84. .regulators_node = of_match_ptr("regulators"), \
  85. .ops = &pm800_volt_range_ops, \
  86. .type = REGULATOR_VOLTAGE, \
  87. .id = PM800_ID_##vreg, \
  88. .owner = THIS_MODULE, \
  89. .n_voltages = n_volt, \
  90. .linear_ranges = volt_ranges, \
  91. .n_linear_ranges = ARRAY_SIZE(volt_ranges), \
  92. .vsel_reg = PM800_##vreg, \
  93. .vsel_mask = 0x7f, \
  94. .enable_reg = PM800_##ereg, \
  95. .enable_mask = 1 << (ebit), \
  96. }, \
  97. .max_ua = (amax), \
  98. }
  99. /*
  100. * vreg - the LDO regs string
  101. * ereg - the string for the enable register.
  102. * ebit - the bit number in the enable register.
  103. * amax - the current
  104. * volt_table - the LDO voltage table
  105. * For all the LDOes, there are too many ranges. Using volt_table will be
  106. * simpler and faster.
  107. */
  108. #define PM800_LDO(match, vreg, ereg, ebit, amax, ldo_volt_table) \
  109. { \
  110. .desc = { \
  111. .name = #vreg, \
  112. .of_match = of_match_ptr(#match), \
  113. .regulators_node = of_match_ptr("regulators"), \
  114. .ops = &pm800_volt_table_ops, \
  115. .type = REGULATOR_VOLTAGE, \
  116. .id = PM800_ID_##vreg, \
  117. .owner = THIS_MODULE, \
  118. .n_voltages = ARRAY_SIZE(ldo_volt_table), \
  119. .vsel_reg = PM800_##vreg##_VOUT, \
  120. .vsel_mask = 0xf, \
  121. .enable_reg = PM800_##ereg, \
  122. .enable_mask = 1 << (ebit), \
  123. .volt_table = ldo_volt_table, \
  124. }, \
  125. .max_ua = (amax), \
  126. }
  127. /* Ranges are sorted in ascending order. */
  128. static const struct linear_range buck1_volt_range[] = {
  129. REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500),
  130. REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x54, 50000),
  131. };
  132. /* BUCK 2~5 have same ranges. */
  133. static const struct linear_range buck2_5_volt_range[] = {
  134. REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500),
  135. REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x72, 50000),
  136. };
  137. static const unsigned int ldo1_volt_table[] = {
  138. 600000, 650000, 700000, 750000, 800000, 850000, 900000, 950000,
  139. 1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000,
  140. };
  141. static const unsigned int ldo2_volt_table[] = {
  142. 1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000,
  143. };
  144. /* LDO 3~17 have same voltage table. */
  145. static const unsigned int ldo3_17_volt_table[] = {
  146. 1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000,
  147. 2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000,
  148. };
  149. /* LDO 18~19 have same voltage table. */
  150. static const unsigned int ldo18_19_volt_table[] = {
  151. 1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000,
  152. };
  153. static int pm800_get_current_limit(struct regulator_dev *rdev)
  154. {
  155. struct pm800_regulator_info *info = rdev_get_drvdata(rdev);
  156. return info->max_ua;
  157. }
  158. static const struct regulator_ops pm800_volt_range_ops = {
  159. .list_voltage = regulator_list_voltage_linear_range,
  160. .map_voltage = regulator_map_voltage_linear_range,
  161. .set_voltage_sel = regulator_set_voltage_sel_regmap,
  162. .get_voltage_sel = regulator_get_voltage_sel_regmap,
  163. .enable = regulator_enable_regmap,
  164. .disable = regulator_disable_regmap,
  165. .is_enabled = regulator_is_enabled_regmap,
  166. .get_current_limit = pm800_get_current_limit,
  167. };
  168. static const struct regulator_ops pm800_volt_table_ops = {
  169. .list_voltage = regulator_list_voltage_table,
  170. .map_voltage = regulator_map_voltage_iterate,
  171. .set_voltage_sel = regulator_set_voltage_sel_regmap,
  172. .get_voltage_sel = regulator_get_voltage_sel_regmap,
  173. .enable = regulator_enable_regmap,
  174. .disable = regulator_disable_regmap,
  175. .is_enabled = regulator_is_enabled_regmap,
  176. .get_current_limit = pm800_get_current_limit,
  177. };
  178. /* The array is indexed by id(PM800_ID_XXX) */
  179. static struct pm800_regulator_info pm800_regulator_info[] = {
  180. PM800_BUCK(buck1, BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55),
  181. PM800_BUCK(buck2, BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73),
  182. PM800_BUCK(buck3, BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73),
  183. PM800_BUCK(buck4, BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73),
  184. PM800_BUCK(buck5, BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73),
  185. PM800_LDO(ldo1, LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table),
  186. PM800_LDO(ldo2, LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table),
  187. PM800_LDO(ldo3, LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table),
  188. PM800_LDO(ldo4, LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table),
  189. PM800_LDO(ldo5, LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table),
  190. PM800_LDO(ldo6, LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table),
  191. PM800_LDO(ldo7, LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table),
  192. PM800_LDO(ldo8, LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table),
  193. PM800_LDO(ldo9, LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table),
  194. PM800_LDO(ldo10, LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table),
  195. PM800_LDO(ldo11, LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table),
  196. PM800_LDO(ldo12, LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table),
  197. PM800_LDO(ldo13, LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table),
  198. PM800_LDO(ldo14, LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table),
  199. PM800_LDO(ldo15, LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table),
  200. PM800_LDO(ldo16, LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table),
  201. PM800_LDO(ldo17, LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table),
  202. PM800_LDO(ldo18, LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table),
  203. PM800_LDO(ldo19, LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table),
  204. };
  205. static int pm800_regulator_probe(struct platform_device *pdev)
  206. {
  207. struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
  208. struct pm80x_platform_data *pdata = dev_get_platdata(pdev->dev.parent);
  209. struct regulator_config config = { };
  210. struct regulator_init_data *init_data;
  211. int i, ret;
  212. if (pdata && pdata->num_regulators) {
  213. unsigned int count = 0;
  214. /* Check whether num_regulator is valid. */
  215. for (i = 0; i < ARRAY_SIZE(pdata->regulators); i++) {
  216. if (pdata->regulators[i])
  217. count++;
  218. }
  219. if (count != pdata->num_regulators)
  220. return -EINVAL;
  221. }
  222. config.dev = chip->dev;
  223. config.regmap = chip->subchip->regmap_power;
  224. for (i = 0; i < PM800_ID_RG_MAX; i++) {
  225. struct regulator_dev *regulator;
  226. if (pdata && pdata->num_regulators) {
  227. init_data = pdata->regulators[i];
  228. if (!init_data)
  229. continue;
  230. config.init_data = init_data;
  231. }
  232. config.driver_data = &pm800_regulator_info[i];
  233. regulator = devm_regulator_register(&pdev->dev,
  234. &pm800_regulator_info[i].desc, &config);
  235. if (IS_ERR(regulator)) {
  236. ret = PTR_ERR(regulator);
  237. dev_err(&pdev->dev, "Failed to register %s\n",
  238. pm800_regulator_info[i].desc.name);
  239. return ret;
  240. }
  241. }
  242. return 0;
  243. }
  244. static struct platform_driver pm800_regulator_driver = {
  245. .driver = {
  246. .name = "88pm80x-regulator",
  247. },
  248. .probe = pm800_regulator_probe,
  249. };
  250. module_platform_driver(pm800_regulator_driver);
  251. MODULE_LICENSE("GPL");
  252. MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>");
  253. MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC");
  254. MODULE_ALIAS("platform:88pm800-regulator");