da9063-regulator.c 23 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. //
  3. // Regulator driver for DA9063 PMIC series
  4. //
  5. // Copyright 2012 Dialog Semiconductors Ltd.
  6. // Copyright 2013 Philipp Zabel, Pengutronix
  7. //
  8. // Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
  9. #include <linux/kernel.h>
  10. #include <linux/module.h>
  11. #include <linux/init.h>
  12. #include <linux/err.h>
  13. #include <linux/slab.h>
  14. #include <linux/of.h>
  15. #include <linux/platform_device.h>
  16. #include <linux/regmap.h>
  17. #include <linux/regulator/driver.h>
  18. #include <linux/regulator/machine.h>
  19. #include <linux/regulator/of_regulator.h>
  20. #include <linux/mfd/da9063/core.h>
  21. #include <linux/mfd/da9063/registers.h>
  22. /* Definition for registering regmap bit fields using a mask */
  23. #define BFIELD(_reg, _mask) \
  24. REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \
  25. sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1)
  26. /* DA9063 and DA9063L regulator IDs */
  27. enum {
  28. /* BUCKs */
  29. DA9063_ID_BCORE1,
  30. DA9063_ID_BCORE2,
  31. DA9063_ID_BPRO,
  32. DA9063_ID_BMEM,
  33. DA9063_ID_BIO,
  34. DA9063_ID_BPERI,
  35. /* BCORE1 and BCORE2 in merged mode */
  36. DA9063_ID_BCORES_MERGED,
  37. /* BMEM and BIO in merged mode */
  38. DA9063_ID_BMEM_BIO_MERGED,
  39. /* When two BUCKs are merged, they cannot be reused separately */
  40. /* LDOs on both DA9063 and DA9063L */
  41. DA9063_ID_LDO3,
  42. DA9063_ID_LDO7,
  43. DA9063_ID_LDO8,
  44. DA9063_ID_LDO9,
  45. DA9063_ID_LDO11,
  46. /* DA9063-only LDOs */
  47. DA9063_ID_LDO1,
  48. DA9063_ID_LDO2,
  49. DA9063_ID_LDO4,
  50. DA9063_ID_LDO5,
  51. DA9063_ID_LDO6,
  52. DA9063_ID_LDO10,
  53. };
  54. /* Old regulator platform data */
  55. struct da9063_regulator_data {
  56. int id;
  57. struct regulator_init_data *initdata;
  58. };
  59. struct da9063_regulators_pdata {
  60. unsigned int n_regulators;
  61. struct da9063_regulator_data *regulator_data;
  62. };
  63. /* Regulator capabilities and registers description */
  64. struct da9063_regulator_info {
  65. struct regulator_desc desc;
  66. /* DA9063 main register fields */
  67. struct reg_field mode; /* buck mode of operation */
  68. struct reg_field suspend;
  69. struct reg_field sleep;
  70. struct reg_field suspend_sleep;
  71. unsigned int suspend_vsel_reg;
  72. /* DA9063 event detection bit */
  73. struct reg_field oc_event;
  74. };
  75. /* Macros for LDO */
  76. #define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \
  77. .desc.id = chip##_ID_##regl_name, \
  78. .desc.name = __stringify(chip##_##regl_name), \
  79. .desc.ops = &da9063_ldo_ops, \
  80. .desc.min_uV = (min_mV) * 1000, \
  81. .desc.uV_step = (step_mV) * 1000, \
  82. .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \
  83. + (DA9063_V##regl_name##_BIAS)), \
  84. .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
  85. .desc.enable_mask = DA9063_LDO_EN, \
  86. .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
  87. .desc.vsel_mask = DA9063_V##regl_name##_MASK, \
  88. .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \
  89. .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \
  90. .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_LDO_CONF), \
  91. .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \
  92. .suspend_vsel_reg = DA9063_REG_V##regl_name##_B
  93. /* Macros for voltage DC/DC converters (BUCKs) */
  94. #define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \
  95. creg, cmask) \
  96. .desc.id = chip##_ID_##regl_name, \
  97. .desc.name = __stringify(chip##_##regl_name), \
  98. .desc.ops = &da9063_buck_ops, \
  99. .desc.min_uV = (min_mV) * 1000, \
  100. .desc.uV_step = (step_mV) * 1000, \
  101. .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \
  102. .desc.csel_reg = (creg), \
  103. .desc.csel_mask = (cmask), \
  104. .desc.curr_table = limits_array, \
  105. .desc.n_current_limits = ARRAY_SIZE(limits_array)
  106. #define DA9063_BUCK_COMMON_FIELDS(regl_name) \
  107. .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
  108. .desc.enable_mask = DA9063_BUCK_EN, \
  109. .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
  110. .desc.vsel_mask = DA9063_VBUCK_MASK, \
  111. .desc.linear_min_sel = DA9063_VBUCK_BIAS, \
  112. .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \
  113. .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_BUCK_CONF), \
  114. .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \
  115. .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \
  116. .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK)
  117. /* Defines asignment of regulators info table to chip model */
  118. struct da9063_dev_model {
  119. const struct da9063_regulator_info *regulator_info;
  120. unsigned int n_regulators;
  121. enum da9063_type type;
  122. };
  123. /* Single regulator settings */
  124. struct da9063_regulator {
  125. struct regulator_desc desc;
  126. struct regulator_dev *rdev;
  127. struct da9063 *hw;
  128. const struct da9063_regulator_info *info;
  129. struct regmap_field *mode;
  130. struct regmap_field *suspend;
  131. struct regmap_field *sleep;
  132. struct regmap_field *suspend_sleep;
  133. };
  134. /* Encapsulates all information for the regulators driver */
  135. struct da9063_regulators {
  136. unsigned int n_regulators;
  137. /* Array size to be defined during init. Keep at end. */
  138. struct da9063_regulator regulator[];
  139. };
  140. /* BUCK modes for DA9063 */
  141. enum {
  142. BUCK_MODE_MANUAL, /* 0 */
  143. BUCK_MODE_SLEEP, /* 1 */
  144. BUCK_MODE_SYNC, /* 2 */
  145. BUCK_MODE_AUTO /* 3 */
  146. };
  147. /* Regulator operations */
  148. /*
  149. * Current limits array (in uA) for BCORE1, BCORE2, BPRO.
  150. * Entry indexes corresponds to register values.
  151. */
  152. static const unsigned int da9063_buck_a_limits[] = {
  153. 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000,
  154. 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000
  155. };
  156. /*
  157. * Current limits array (in uA) for BMEM, BIO, BPERI.
  158. * Entry indexes corresponds to register values.
  159. */
  160. static const unsigned int da9063_buck_b_limits[] = {
  161. 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,
  162. 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000
  163. };
  164. /*
  165. * Current limits array (in uA) for merged BCORE1 and BCORE2.
  166. * Entry indexes corresponds to register values.
  167. */
  168. static const unsigned int da9063_bcores_merged_limits[] = {
  169. 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000,
  170. 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000
  171. };
  172. /*
  173. * Current limits array (in uA) for merged BMEM and BIO.
  174. * Entry indexes corresponds to register values.
  175. */
  176. static const unsigned int da9063_bmem_bio_merged_limits[] = {
  177. 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
  178. 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
  179. };
  180. static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
  181. {
  182. struct da9063_regulator *regl = rdev_get_drvdata(rdev);
  183. unsigned int val;
  184. switch (mode) {
  185. case REGULATOR_MODE_FAST:
  186. val = BUCK_MODE_SYNC;
  187. break;
  188. case REGULATOR_MODE_NORMAL:
  189. val = BUCK_MODE_AUTO;
  190. break;
  191. case REGULATOR_MODE_STANDBY:
  192. val = BUCK_MODE_SLEEP;
  193. break;
  194. default:
  195. return -EINVAL;
  196. }
  197. return regmap_field_write(regl->mode, val);
  198. }
  199. /*
  200. * Bucks use single mode register field for normal operation
  201. * and suspend state.
  202. * There are 3 modes to map to: FAST, NORMAL, and STANDBY.
  203. */
  204. static unsigned int da9063_buck_get_mode(struct regulator_dev *rdev)
  205. {
  206. struct da9063_regulator *regl = rdev_get_drvdata(rdev);
  207. unsigned int val;
  208. int ret;
  209. ret = regmap_field_read(regl->mode, &val);
  210. if (ret < 0)
  211. return ret;
  212. switch (val) {
  213. default:
  214. case BUCK_MODE_MANUAL:
  215. /* Sleep flag bit decides the mode */
  216. break;
  217. case BUCK_MODE_SLEEP:
  218. return REGULATOR_MODE_STANDBY;
  219. case BUCK_MODE_SYNC:
  220. return REGULATOR_MODE_FAST;
  221. case BUCK_MODE_AUTO:
  222. return REGULATOR_MODE_NORMAL;
  223. }
  224. ret = regmap_field_read(regl->sleep, &val);
  225. if (ret < 0)
  226. return 0;
  227. if (val)
  228. return REGULATOR_MODE_STANDBY;
  229. else
  230. return REGULATOR_MODE_FAST;
  231. }
  232. /*
  233. * LDOs use sleep flags - one for normal and one for suspend state.
  234. * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state.
  235. */
  236. static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode)
  237. {
  238. struct da9063_regulator *regl = rdev_get_drvdata(rdev);
  239. unsigned int val;
  240. switch (mode) {
  241. case REGULATOR_MODE_NORMAL:
  242. val = 0;
  243. break;
  244. case REGULATOR_MODE_STANDBY:
  245. val = 1;
  246. break;
  247. default:
  248. return -EINVAL;
  249. }
  250. return regmap_field_write(regl->sleep, val);
  251. }
  252. static unsigned int da9063_ldo_get_mode(struct regulator_dev *rdev)
  253. {
  254. struct da9063_regulator *regl = rdev_get_drvdata(rdev);
  255. int ret, val;
  256. ret = regmap_field_read(regl->sleep, &val);
  257. if (ret < 0)
  258. return 0;
  259. if (val)
  260. return REGULATOR_MODE_STANDBY;
  261. else
  262. return REGULATOR_MODE_NORMAL;
  263. }
  264. static int da9063_buck_get_status(struct regulator_dev *rdev)
  265. {
  266. int ret = regulator_is_enabled_regmap(rdev);
  267. if (ret == 0) {
  268. ret = REGULATOR_STATUS_OFF;
  269. } else if (ret > 0) {
  270. ret = da9063_buck_get_mode(rdev);
  271. if (ret > 0)
  272. ret = regulator_mode_to_status(ret);
  273. else if (ret == 0)
  274. ret = -EIO;
  275. }
  276. return ret;
  277. }
  278. static int da9063_ldo_get_status(struct regulator_dev *rdev)
  279. {
  280. int ret = regulator_is_enabled_regmap(rdev);
  281. if (ret == 0) {
  282. ret = REGULATOR_STATUS_OFF;
  283. } else if (ret > 0) {
  284. ret = da9063_ldo_get_mode(rdev);
  285. if (ret > 0)
  286. ret = regulator_mode_to_status(ret);
  287. else if (ret == 0)
  288. ret = -EIO;
  289. }
  290. return ret;
  291. }
  292. static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV)
  293. {
  294. struct da9063_regulator *regl = rdev_get_drvdata(rdev);
  295. const struct da9063_regulator_info *rinfo = regl->info;
  296. int ret, sel;
  297. sel = regulator_map_voltage_linear(rdev, uV, uV);
  298. if (sel < 0)
  299. return sel;
  300. sel <<= ffs(rdev->desc->vsel_mask) - 1;
  301. ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg,
  302. rdev->desc->vsel_mask, sel);
  303. return ret;
  304. }
  305. static int da9063_suspend_enable(struct regulator_dev *rdev)
  306. {
  307. struct da9063_regulator *regl = rdev_get_drvdata(rdev);
  308. return regmap_field_write(regl->suspend, 1);
  309. }
  310. static int da9063_suspend_disable(struct regulator_dev *rdev)
  311. {
  312. struct da9063_regulator *regl = rdev_get_drvdata(rdev);
  313. return regmap_field_write(regl->suspend, 0);
  314. }
  315. static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev,
  316. unsigned int mode)
  317. {
  318. struct da9063_regulator *regl = rdev_get_drvdata(rdev);
  319. int val;
  320. switch (mode) {
  321. case REGULATOR_MODE_FAST:
  322. val = BUCK_MODE_SYNC;
  323. break;
  324. case REGULATOR_MODE_NORMAL:
  325. val = BUCK_MODE_AUTO;
  326. break;
  327. case REGULATOR_MODE_STANDBY:
  328. val = BUCK_MODE_SLEEP;
  329. break;
  330. default:
  331. return -EINVAL;
  332. }
  333. return regmap_field_write(regl->mode, val);
  334. }
  335. static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev,
  336. unsigned int mode)
  337. {
  338. struct da9063_regulator *regl = rdev_get_drvdata(rdev);
  339. unsigned int val;
  340. switch (mode) {
  341. case REGULATOR_MODE_NORMAL:
  342. val = 0;
  343. break;
  344. case REGULATOR_MODE_STANDBY:
  345. val = 1;
  346. break;
  347. default:
  348. return -EINVAL;
  349. }
  350. return regmap_field_write(regl->suspend_sleep, val);
  351. }
  352. static const struct regulator_ops da9063_buck_ops = {
  353. .enable = regulator_enable_regmap,
  354. .disable = regulator_disable_regmap,
  355. .is_enabled = regulator_is_enabled_regmap,
  356. .get_voltage_sel = regulator_get_voltage_sel_regmap,
  357. .set_voltage_sel = regulator_set_voltage_sel_regmap,
  358. .list_voltage = regulator_list_voltage_linear,
  359. .set_current_limit = regulator_set_current_limit_regmap,
  360. .get_current_limit = regulator_get_current_limit_regmap,
  361. .set_mode = da9063_buck_set_mode,
  362. .get_mode = da9063_buck_get_mode,
  363. .get_status = da9063_buck_get_status,
  364. .set_suspend_voltage = da9063_set_suspend_voltage,
  365. .set_suspend_enable = da9063_suspend_enable,
  366. .set_suspend_disable = da9063_suspend_disable,
  367. .set_suspend_mode = da9063_buck_set_suspend_mode,
  368. };
  369. static const struct regulator_ops da9063_ldo_ops = {
  370. .enable = regulator_enable_regmap,
  371. .disable = regulator_disable_regmap,
  372. .is_enabled = regulator_is_enabled_regmap,
  373. .get_voltage_sel = regulator_get_voltage_sel_regmap,
  374. .set_voltage_sel = regulator_set_voltage_sel_regmap,
  375. .list_voltage = regulator_list_voltage_linear,
  376. .set_mode = da9063_ldo_set_mode,
  377. .get_mode = da9063_ldo_get_mode,
  378. .get_status = da9063_ldo_get_status,
  379. .set_suspend_voltage = da9063_set_suspend_voltage,
  380. .set_suspend_enable = da9063_suspend_enable,
  381. .set_suspend_disable = da9063_suspend_disable,
  382. .set_suspend_mode = da9063_ldo_set_suspend_mode,
  383. };
  384. /* Info of regulators for DA9063 */
  385. static const struct da9063_regulator_info da9063_regulator_info[] = {
  386. {
  387. DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570,
  388. da9063_buck_a_limits,
  389. DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
  390. DA9063_BUCK_COMMON_FIELDS(BCORE1),
  391. },
  392. {
  393. DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570,
  394. da9063_buck_a_limits,
  395. DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK),
  396. DA9063_BUCK_COMMON_FIELDS(BCORE2),
  397. },
  398. {
  399. DA9063_BUCK(DA9063, BPRO, 530, 10, 1800,
  400. da9063_buck_a_limits,
  401. DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK),
  402. DA9063_BUCK_COMMON_FIELDS(BPRO),
  403. },
  404. {
  405. DA9063_BUCK(DA9063, BMEM, 800, 20, 3340,
  406. da9063_buck_b_limits,
  407. DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
  408. DA9063_BUCK_COMMON_FIELDS(BMEM),
  409. },
  410. {
  411. DA9063_BUCK(DA9063, BIO, 800, 20, 3340,
  412. da9063_buck_b_limits,
  413. DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK),
  414. DA9063_BUCK_COMMON_FIELDS(BIO),
  415. },
  416. {
  417. DA9063_BUCK(DA9063, BPERI, 800, 20, 3340,
  418. da9063_buck_b_limits,
  419. DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK),
  420. DA9063_BUCK_COMMON_FIELDS(BPERI),
  421. },
  422. {
  423. DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570,
  424. da9063_bcores_merged_limits,
  425. DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
  426. /* BCORES_MERGED uses the same register fields as BCORE1 */
  427. DA9063_BUCK_COMMON_FIELDS(BCORE1),
  428. },
  429. {
  430. DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340,
  431. da9063_bmem_bio_merged_limits,
  432. DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
  433. /* BMEM_BIO_MERGED uses the same register fields as BMEM */
  434. DA9063_BUCK_COMMON_FIELDS(BMEM),
  435. },
  436. {
  437. DA9063_LDO(DA9063, LDO3, 900, 20, 3440),
  438. .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM),
  439. },
  440. {
  441. DA9063_LDO(DA9063, LDO7, 900, 50, 3600),
  442. .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM),
  443. },
  444. {
  445. DA9063_LDO(DA9063, LDO8, 900, 50, 3600),
  446. .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM),
  447. },
  448. {
  449. DA9063_LDO(DA9063, LDO9, 950, 50, 3600),
  450. },
  451. {
  452. DA9063_LDO(DA9063, LDO11, 900, 50, 3600),
  453. .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM),
  454. },
  455. /* The following LDOs are present only on DA9063, not on DA9063L */
  456. {
  457. DA9063_LDO(DA9063, LDO1, 600, 20, 1860),
  458. },
  459. {
  460. DA9063_LDO(DA9063, LDO2, 600, 20, 1860),
  461. },
  462. {
  463. DA9063_LDO(DA9063, LDO4, 900, 20, 3440),
  464. .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM),
  465. },
  466. {
  467. DA9063_LDO(DA9063, LDO5, 900, 50, 3600),
  468. },
  469. {
  470. DA9063_LDO(DA9063, LDO6, 900, 50, 3600),
  471. },
  472. {
  473. DA9063_LDO(DA9063, LDO10, 900, 50, 3600),
  474. },
  475. };
  476. /* Link chip model with regulators info table */
  477. static struct da9063_dev_model regulators_models[] = {
  478. {
  479. .regulator_info = da9063_regulator_info,
  480. .n_regulators = ARRAY_SIZE(da9063_regulator_info),
  481. .type = PMIC_TYPE_DA9063,
  482. },
  483. {
  484. .regulator_info = da9063_regulator_info,
  485. .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6,
  486. .type = PMIC_TYPE_DA9063L,
  487. },
  488. { }
  489. };
  490. /* Regulator interrupt handlers */
  491. static irqreturn_t da9063_ldo_lim_event(int irq, void *data)
  492. {
  493. struct da9063_regulators *regulators = data;
  494. struct da9063 *hw = regulators->regulator[0].hw;
  495. struct da9063_regulator *regl;
  496. int bits, i, ret;
  497. ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits);
  498. if (ret < 0)
  499. return IRQ_NONE;
  500. for (i = regulators->n_regulators - 1; i >= 0; i--) {
  501. regl = &regulators->regulator[i];
  502. if (regl->info->oc_event.reg != DA9063_REG_STATUS_D)
  503. continue;
  504. if (BIT(regl->info->oc_event.lsb) & bits) {
  505. regulator_notifier_call_chain(regl->rdev,
  506. REGULATOR_EVENT_OVER_CURRENT, NULL);
  507. }
  508. }
  509. return IRQ_HANDLED;
  510. }
  511. /*
  512. * Probing and Initialisation functions
  513. */
  514. static const struct regulator_init_data *da9063_get_regulator_initdata(
  515. const struct da9063_regulators_pdata *regl_pdata, int id)
  516. {
  517. int i;
  518. for (i = 0; i < regl_pdata->n_regulators; i++) {
  519. if (id == regl_pdata->regulator_data[i].id)
  520. return regl_pdata->regulator_data[i].initdata;
  521. }
  522. return NULL;
  523. }
  524. static struct of_regulator_match da9063_matches[] = {
  525. [DA9063_ID_BCORE1] = { .name = "bcore1" },
  526. [DA9063_ID_BCORE2] = { .name = "bcore2" },
  527. [DA9063_ID_BPRO] = { .name = "bpro", },
  528. [DA9063_ID_BMEM] = { .name = "bmem", },
  529. [DA9063_ID_BIO] = { .name = "bio", },
  530. [DA9063_ID_BPERI] = { .name = "bperi", },
  531. [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" },
  532. [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", },
  533. [DA9063_ID_LDO3] = { .name = "ldo3", },
  534. [DA9063_ID_LDO7] = { .name = "ldo7", },
  535. [DA9063_ID_LDO8] = { .name = "ldo8", },
  536. [DA9063_ID_LDO9] = { .name = "ldo9", },
  537. [DA9063_ID_LDO11] = { .name = "ldo11", },
  538. /* The following LDOs are present only on DA9063, not on DA9063L */
  539. [DA9063_ID_LDO1] = { .name = "ldo1", },
  540. [DA9063_ID_LDO2] = { .name = "ldo2", },
  541. [DA9063_ID_LDO4] = { .name = "ldo4", },
  542. [DA9063_ID_LDO5] = { .name = "ldo5", },
  543. [DA9063_ID_LDO6] = { .name = "ldo6", },
  544. [DA9063_ID_LDO10] = { .name = "ldo10", },
  545. };
  546. static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
  547. struct platform_device *pdev,
  548. struct of_regulator_match **da9063_reg_matches)
  549. {
  550. struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
  551. struct da9063_regulators_pdata *pdata;
  552. struct da9063_regulator_data *rdata;
  553. struct device_node *node;
  554. int da9063_matches_len = ARRAY_SIZE(da9063_matches);
  555. int i, n, num;
  556. if (da9063->type == PMIC_TYPE_DA9063L)
  557. da9063_matches_len -= 6;
  558. node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
  559. if (!node) {
  560. dev_err(&pdev->dev, "Regulators device node not found\n");
  561. return ERR_PTR(-ENODEV);
  562. }
  563. num = of_regulator_match(&pdev->dev, node, da9063_matches,
  564. da9063_matches_len);
  565. of_node_put(node);
  566. if (num < 0) {
  567. dev_err(&pdev->dev, "Failed to match regulators\n");
  568. return ERR_PTR(-EINVAL);
  569. }
  570. pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
  571. if (!pdata)
  572. return ERR_PTR(-ENOMEM);
  573. pdata->regulator_data = devm_kcalloc(&pdev->dev,
  574. num, sizeof(*pdata->regulator_data),
  575. GFP_KERNEL);
  576. if (!pdata->regulator_data)
  577. return ERR_PTR(-ENOMEM);
  578. pdata->n_regulators = num;
  579. n = 0;
  580. for (i = 0; i < da9063_matches_len; i++) {
  581. if (!da9063_matches[i].init_data)
  582. continue;
  583. rdata = &pdata->regulator_data[n];
  584. rdata->id = i;
  585. rdata->initdata = da9063_matches[i].init_data;
  586. n++;
  587. }
  588. *da9063_reg_matches = da9063_matches;
  589. return pdata;
  590. }
  591. static int da9063_regulator_probe(struct platform_device *pdev)
  592. {
  593. struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
  594. struct of_regulator_match *da9063_reg_matches = NULL;
  595. struct da9063_regulators_pdata *regl_pdata;
  596. const struct da9063_dev_model *model;
  597. struct da9063_regulators *regulators;
  598. struct da9063_regulator *regl;
  599. struct regulator_config config;
  600. bool bcores_merged, bmem_bio_merged;
  601. int id, irq, n, n_regulators, ret, val;
  602. regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches);
  603. if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) {
  604. dev_err(&pdev->dev,
  605. "No regulators defined for the platform\n");
  606. return -ENODEV;
  607. }
  608. /* Find regulators set for particular device model */
  609. for (model = regulators_models; model->regulator_info; model++) {
  610. if (model->type == da9063->type)
  611. break;
  612. }
  613. if (!model->regulator_info) {
  614. dev_err(&pdev->dev, "Chip model not recognised (%u)\n",
  615. da9063->type);
  616. return -ENODEV;
  617. }
  618. ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val);
  619. if (ret < 0) {
  620. dev_err(&pdev->dev,
  621. "Error while reading BUCKs configuration\n");
  622. return ret;
  623. }
  624. bcores_merged = val & DA9063_BCORE_MERGE;
  625. bmem_bio_merged = val & DA9063_BUCK_MERGE;
  626. n_regulators = model->n_regulators;
  627. if (bcores_merged)
  628. n_regulators -= 2; /* remove BCORE1, BCORE2 */
  629. else
  630. n_regulators--; /* remove BCORES_MERGED */
  631. if (bmem_bio_merged)
  632. n_regulators -= 2; /* remove BMEM, BIO */
  633. else
  634. n_regulators--; /* remove BMEM_BIO_MERGED */
  635. /* Allocate memory required by usable regulators */
  636. regulators = devm_kzalloc(&pdev->dev, struct_size(regulators,
  637. regulator, n_regulators), GFP_KERNEL);
  638. if (!regulators)
  639. return -ENOMEM;
  640. regulators->n_regulators = n_regulators;
  641. platform_set_drvdata(pdev, regulators);
  642. /* Register all regulators declared in platform information */
  643. n = 0;
  644. id = 0;
  645. while (n < regulators->n_regulators) {
  646. /* Skip regulator IDs depending on merge mode configuration */
  647. switch (id) {
  648. case DA9063_ID_BCORE1:
  649. case DA9063_ID_BCORE2:
  650. if (bcores_merged) {
  651. id++;
  652. continue;
  653. }
  654. break;
  655. case DA9063_ID_BMEM:
  656. case DA9063_ID_BIO:
  657. if (bmem_bio_merged) {
  658. id++;
  659. continue;
  660. }
  661. break;
  662. case DA9063_ID_BCORES_MERGED:
  663. if (!bcores_merged) {
  664. id++;
  665. continue;
  666. }
  667. break;
  668. case DA9063_ID_BMEM_BIO_MERGED:
  669. if (!bmem_bio_merged) {
  670. id++;
  671. continue;
  672. }
  673. break;
  674. }
  675. /* Initialise regulator structure */
  676. regl = &regulators->regulator[n];
  677. regl->hw = da9063;
  678. regl->info = &model->regulator_info[id];
  679. regl->desc = regl->info->desc;
  680. regl->desc.type = REGULATOR_VOLTAGE;
  681. regl->desc.owner = THIS_MODULE;
  682. if (regl->info->mode.reg) {
  683. regl->mode = devm_regmap_field_alloc(&pdev->dev,
  684. da9063->regmap, regl->info->mode);
  685. if (IS_ERR(regl->mode))
  686. return PTR_ERR(regl->mode);
  687. }
  688. if (regl->info->suspend.reg) {
  689. regl->suspend = devm_regmap_field_alloc(&pdev->dev,
  690. da9063->regmap, regl->info->suspend);
  691. if (IS_ERR(regl->suspend))
  692. return PTR_ERR(regl->suspend);
  693. }
  694. if (regl->info->sleep.reg) {
  695. regl->sleep = devm_regmap_field_alloc(&pdev->dev,
  696. da9063->regmap, regl->info->sleep);
  697. if (IS_ERR(regl->sleep))
  698. return PTR_ERR(regl->sleep);
  699. }
  700. if (regl->info->suspend_sleep.reg) {
  701. regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev,
  702. da9063->regmap, regl->info->suspend_sleep);
  703. if (IS_ERR(regl->suspend_sleep))
  704. return PTR_ERR(regl->suspend_sleep);
  705. }
  706. /* Register regulator */
  707. memset(&config, 0, sizeof(config));
  708. config.dev = &pdev->dev;
  709. config.init_data = da9063_get_regulator_initdata(regl_pdata, id);
  710. config.driver_data = regl;
  711. if (da9063_reg_matches)
  712. config.of_node = da9063_reg_matches[id].of_node;
  713. config.regmap = da9063->regmap;
  714. regl->rdev = devm_regulator_register(&pdev->dev, &regl->desc,
  715. &config);
  716. if (IS_ERR(regl->rdev)) {
  717. dev_err(&pdev->dev,
  718. "Failed to register %s regulator\n",
  719. regl->desc.name);
  720. return PTR_ERR(regl->rdev);
  721. }
  722. id++;
  723. n++;
  724. }
  725. /* LDOs overcurrent event support */
  726. irq = platform_get_irq_byname(pdev, "LDO_LIM");
  727. if (irq < 0)
  728. return irq;
  729. ret = devm_request_threaded_irq(&pdev->dev, irq,
  730. NULL, da9063_ldo_lim_event,
  731. IRQF_TRIGGER_LOW | IRQF_ONESHOT,
  732. "LDO_LIM", regulators);
  733. if (ret)
  734. dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n");
  735. return ret;
  736. }
  737. static struct platform_driver da9063_regulator_driver = {
  738. .driver = {
  739. .name = DA9063_DRVNAME_REGULATORS,
  740. },
  741. .probe = da9063_regulator_probe,
  742. };
  743. static int __init da9063_regulator_init(void)
  744. {
  745. return platform_driver_register(&da9063_regulator_driver);
  746. }
  747. subsys_initcall(da9063_regulator_init);
  748. static void __exit da9063_regulator_cleanup(void)
  749. {
  750. platform_driver_unregister(&da9063_regulator_driver);
  751. }
  752. module_exit(da9063_regulator_cleanup);
  753. /* Module information */
  754. MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>");
  755. MODULE_DESCRIPTION("DA9063 regulators driver");
  756. MODULE_LICENSE("GPL");
  757. MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS);