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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 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | * | |
15 | */ | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/err.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/of.h> | |
22 | #include <linux/platform_device.h> | |
23 | #include <linux/regmap.h> | |
24 | #include <linux/regulator/driver.h> | |
25 | #include <linux/regulator/machine.h> | |
26 | #include <linux/regulator/of_regulator.h> | |
27 | #include <linux/mfd/da9063/core.h> | |
28 | #include <linux/mfd/da9063/pdata.h> | |
29 | #include <linux/mfd/da9063/registers.h> | |
30 | ||
31 | ||
32 | /* Definition for registering regmap bit fields using a mask */ | |
33 | #define BFIELD(_reg, _mask) \ | |
34 | REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \ | |
35 | sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1) | |
36 | ||
37 | /* Regulator capabilities and registers description */ | |
38 | struct da9063_regulator_info { | |
39 | struct regulator_desc desc; | |
40 | ||
41 | /* Current limiting */ | |
42 | unsigned n_current_limits; | |
43 | const int *current_limits; | |
44 | ||
45 | /* DA9063 main register fields */ | |
46 | struct reg_field mode; /* buck mode of operation */ | |
47 | struct reg_field suspend; | |
48 | struct reg_field sleep; | |
49 | struct reg_field suspend_sleep; | |
50 | unsigned int suspend_vsel_reg; | |
51 | struct reg_field ilimit; | |
52 | ||
53 | /* DA9063 event detection bit */ | |
54 | struct reg_field oc_event; | |
55 | }; | |
56 | ||
57 | /* Macros for LDO */ | |
58 | #define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \ | |
59 | .desc.id = chip##_ID_##regl_name, \ | |
60 | .desc.name = __stringify(chip##_##regl_name), \ | |
61 | .desc.ops = &da9063_ldo_ops, \ | |
62 | .desc.min_uV = (min_mV) * 1000, \ | |
63 | .desc.uV_step = (step_mV) * 1000, \ | |
ebf6dad0 ST |
64 | .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \ |
65 | + (DA9063_V##regl_name##_BIAS)), \ | |
69ca3e58 KG |
66 | .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ |
67 | .desc.enable_mask = DA9063_LDO_EN, \ | |
68 | .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ | |
69 | .desc.vsel_mask = DA9063_V##regl_name##_MASK, \ | |
70 | .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \ | |
71 | .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \ | |
72 | .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \ | |
73 | .suspend_vsel_reg = DA9063_REG_V##regl_name##_B | |
74 | ||
75 | /* Macros for voltage DC/DC converters (BUCKs) */ | |
76 | #define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array) \ | |
77 | .desc.id = chip##_ID_##regl_name, \ | |
78 | .desc.name = __stringify(chip##_##regl_name), \ | |
79 | .desc.ops = &da9063_buck_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 | .current_limits = limits_array, \ | |
84 | .n_current_limits = ARRAY_SIZE(limits_array) | |
85 | ||
86 | #define DA9063_BUCK_COMMON_FIELDS(regl_name) \ | |
87 | .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ | |
88 | .desc.enable_mask = DA9063_BUCK_EN, \ | |
89 | .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ | |
90 | .desc.vsel_mask = DA9063_VBUCK_MASK, \ | |
91 | .desc.linear_min_sel = DA9063_VBUCK_BIAS, \ | |
92 | .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \ | |
93 | .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \ | |
94 | .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \ | |
95 | .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK) | |
96 | ||
97 | /* Defines asignment of regulators info table to chip model */ | |
98 | struct da9063_dev_model { | |
99 | const struct da9063_regulator_info *regulator_info; | |
100 | unsigned n_regulators; | |
101 | unsigned dev_model; | |
102 | }; | |
103 | ||
104 | /* Single regulator settings */ | |
105 | struct da9063_regulator { | |
106 | struct regulator_desc desc; | |
107 | struct regulator_dev *rdev; | |
108 | struct da9063 *hw; | |
109 | const struct da9063_regulator_info *info; | |
110 | ||
111 | struct regmap_field *mode; | |
112 | struct regmap_field *suspend; | |
113 | struct regmap_field *sleep; | |
114 | struct regmap_field *suspend_sleep; | |
115 | struct regmap_field *ilimit; | |
116 | }; | |
117 | ||
118 | /* Encapsulates all information for the regulators driver */ | |
119 | struct da9063_regulators { | |
69ca3e58 KG |
120 | unsigned n_regulators; |
121 | /* Array size to be defined during init. Keep at end. */ | |
122 | struct da9063_regulator regulator[0]; | |
123 | }; | |
124 | ||
125 | /* BUCK modes for DA9063 */ | |
126 | enum { | |
127 | BUCK_MODE_MANUAL, /* 0 */ | |
128 | BUCK_MODE_SLEEP, /* 1 */ | |
129 | BUCK_MODE_SYNC, /* 2 */ | |
130 | BUCK_MODE_AUTO /* 3 */ | |
131 | }; | |
132 | ||
133 | /* Regulator operations */ | |
134 | ||
135 | /* Current limits array (in uA) for BCORE1, BCORE2, BPRO. | |
136 | Entry indexes corresponds to register values. */ | |
137 | static const int da9063_buck_a_limits[] = { | |
138 | 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, | |
139 | 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 | |
140 | }; | |
141 | ||
142 | /* Current limits array (in uA) for BMEM, BIO, BPERI. | |
143 | Entry indexes corresponds to register values. */ | |
144 | static const int da9063_buck_b_limits[] = { | |
145 | 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, | |
146 | 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 | |
147 | }; | |
148 | ||
149 | /* Current limits array (in uA) for merged BCORE1 and BCORE2. | |
150 | Entry indexes corresponds to register values. */ | |
151 | static const int da9063_bcores_merged_limits[] = { | |
152 | 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, | |
153 | 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 | |
154 | }; | |
155 | ||
156 | /* Current limits array (in uA) for merged BMEM and BIO. | |
157 | Entry indexes corresponds to register values. */ | |
158 | static const int da9063_bmem_bio_merged_limits[] = { | |
159 | 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, | |
160 | 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 | |
161 | }; | |
162 | ||
163 | static int da9063_set_current_limit(struct regulator_dev *rdev, | |
164 | int min_uA, int max_uA) | |
165 | { | |
166 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
167 | const struct da9063_regulator_info *rinfo = regl->info; | |
556dcf90 | 168 | int n, tval; |
69ca3e58 KG |
169 | |
170 | for (n = 0; n < rinfo->n_current_limits; n++) { | |
171 | tval = rinfo->current_limits[n]; | |
556dcf90 AL |
172 | if (tval >= min_uA && tval <= max_uA) |
173 | return regmap_field_write(regl->ilimit, n); | |
69ca3e58 | 174 | } |
69ca3e58 | 175 | |
556dcf90 | 176 | return -EINVAL; |
69ca3e58 KG |
177 | } |
178 | ||
179 | static int da9063_get_current_limit(struct regulator_dev *rdev) | |
180 | { | |
181 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
182 | const struct da9063_regulator_info *rinfo = regl->info; | |
183 | unsigned int sel; | |
184 | int ret; | |
185 | ||
186 | ret = regmap_field_read(regl->ilimit, &sel); | |
187 | if (ret < 0) | |
188 | return ret; | |
189 | ||
190 | if (sel >= rinfo->n_current_limits) | |
191 | sel = rinfo->n_current_limits - 1; | |
192 | ||
193 | return rinfo->current_limits[sel]; | |
194 | } | |
195 | ||
196 | static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode) | |
197 | { | |
198 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
199 | unsigned val; | |
200 | ||
201 | switch (mode) { | |
202 | case REGULATOR_MODE_FAST: | |
203 | val = BUCK_MODE_SYNC; | |
204 | break; | |
205 | case REGULATOR_MODE_NORMAL: | |
206 | val = BUCK_MODE_AUTO; | |
207 | break; | |
208 | case REGULATOR_MODE_STANDBY: | |
209 | val = BUCK_MODE_SLEEP; | |
210 | break; | |
211 | default: | |
212 | return -EINVAL; | |
213 | } | |
214 | ||
215 | return regmap_field_write(regl->mode, val); | |
216 | } | |
217 | ||
218 | /* | |
219 | * Bucks use single mode register field for normal operation | |
220 | * and suspend state. | |
221 | * There are 3 modes to map to: FAST, NORMAL, and STANDBY. | |
222 | */ | |
223 | ||
224 | static unsigned da9063_buck_get_mode(struct regulator_dev *rdev) | |
225 | { | |
226 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
227 | struct regmap_field *field; | |
228 | unsigned int val, mode = 0; | |
229 | int ret; | |
230 | ||
231 | ret = regmap_field_read(regl->mode, &val); | |
232 | if (ret < 0) | |
233 | return ret; | |
234 | ||
235 | switch (val) { | |
236 | default: | |
237 | case BUCK_MODE_MANUAL: | |
238 | mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY; | |
239 | /* Sleep flag bit decides the mode */ | |
240 | break; | |
241 | case BUCK_MODE_SLEEP: | |
242 | return REGULATOR_MODE_STANDBY; | |
243 | case BUCK_MODE_SYNC: | |
244 | return REGULATOR_MODE_FAST; | |
245 | case BUCK_MODE_AUTO: | |
246 | return REGULATOR_MODE_NORMAL; | |
247 | } | |
248 | ||
249 | /* Detect current regulator state */ | |
250 | ret = regmap_field_read(regl->suspend, &val); | |
251 | if (ret < 0) | |
252 | return 0; | |
253 | ||
254 | /* Read regulator mode from proper register, depending on state */ | |
255 | if (val) | |
256 | field = regl->suspend_sleep; | |
257 | else | |
258 | field = regl->sleep; | |
259 | ||
260 | ret = regmap_field_read(field, &val); | |
261 | if (ret < 0) | |
262 | return 0; | |
263 | ||
264 | if (val) | |
265 | mode &= REGULATOR_MODE_STANDBY; | |
266 | else | |
267 | mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST; | |
268 | ||
269 | return mode; | |
270 | } | |
271 | ||
272 | /* | |
273 | * LDOs use sleep flags - one for normal and one for suspend state. | |
274 | * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. | |
275 | */ | |
276 | ||
277 | static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned mode) | |
278 | { | |
279 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
280 | unsigned val; | |
281 | ||
282 | switch (mode) { | |
283 | case REGULATOR_MODE_NORMAL: | |
284 | val = 0; | |
285 | break; | |
286 | case REGULATOR_MODE_STANDBY: | |
287 | val = 1; | |
288 | break; | |
289 | default: | |
290 | return -EINVAL; | |
291 | } | |
292 | ||
293 | return regmap_field_write(regl->sleep, val); | |
294 | } | |
295 | ||
296 | static unsigned da9063_ldo_get_mode(struct regulator_dev *rdev) | |
297 | { | |
298 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
299 | struct regmap_field *field; | |
300 | int ret, val; | |
301 | ||
302 | /* Detect current regulator state */ | |
303 | ret = regmap_field_read(regl->suspend, &val); | |
304 | if (ret < 0) | |
305 | return 0; | |
306 | ||
307 | /* Read regulator mode from proper register, depending on state */ | |
308 | if (val) | |
309 | field = regl->suspend_sleep; | |
310 | else | |
311 | field = regl->sleep; | |
312 | ||
313 | ret = regmap_field_read(field, &val); | |
314 | if (ret < 0) | |
315 | return 0; | |
316 | ||
317 | if (val) | |
318 | return REGULATOR_MODE_STANDBY; | |
319 | else | |
320 | return REGULATOR_MODE_NORMAL; | |
321 | } | |
322 | ||
323 | static int da9063_buck_get_status(struct regulator_dev *rdev) | |
324 | { | |
325 | int ret = regulator_is_enabled_regmap(rdev); | |
326 | ||
327 | if (ret == 0) { | |
328 | ret = REGULATOR_STATUS_OFF; | |
329 | } else if (ret > 0) { | |
330 | ret = da9063_buck_get_mode(rdev); | |
331 | if (ret > 0) | |
332 | ret = regulator_mode_to_status(ret); | |
333 | else if (ret == 0) | |
334 | ret = -EIO; | |
335 | } | |
336 | ||
337 | return ret; | |
338 | } | |
339 | ||
340 | static int da9063_ldo_get_status(struct regulator_dev *rdev) | |
341 | { | |
342 | int ret = regulator_is_enabled_regmap(rdev); | |
343 | ||
344 | if (ret == 0) { | |
345 | ret = REGULATOR_STATUS_OFF; | |
346 | } else if (ret > 0) { | |
347 | ret = da9063_ldo_get_mode(rdev); | |
348 | if (ret > 0) | |
349 | ret = regulator_mode_to_status(ret); | |
350 | else if (ret == 0) | |
351 | ret = -EIO; | |
352 | } | |
353 | ||
354 | return ret; | |
355 | } | |
356 | ||
357 | static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) | |
358 | { | |
359 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
360 | const struct da9063_regulator_info *rinfo = regl->info; | |
361 | int ret, sel; | |
362 | ||
363 | sel = regulator_map_voltage_linear(rdev, uV, uV); | |
364 | if (sel < 0) | |
8a7963d5 | 365 | return sel; |
69ca3e58 KG |
366 | |
367 | sel <<= ffs(rdev->desc->vsel_mask) - 1; | |
368 | ||
369 | ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, | |
370 | rdev->desc->vsel_mask, sel); | |
371 | ||
372 | return ret; | |
373 | } | |
374 | ||
375 | static int da9063_suspend_enable(struct regulator_dev *rdev) | |
376 | { | |
377 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
378 | ||
379 | return regmap_field_write(regl->suspend, 1); | |
380 | } | |
381 | ||
382 | static int da9063_suspend_disable(struct regulator_dev *rdev) | |
383 | { | |
384 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
385 | ||
386 | return regmap_field_write(regl->suspend, 0); | |
387 | } | |
388 | ||
389 | static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) | |
390 | { | |
391 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
392 | int val; | |
393 | ||
394 | switch (mode) { | |
395 | case REGULATOR_MODE_FAST: | |
396 | val = BUCK_MODE_SYNC; | |
397 | break; | |
398 | case REGULATOR_MODE_NORMAL: | |
399 | val = BUCK_MODE_AUTO; | |
400 | break; | |
401 | case REGULATOR_MODE_STANDBY: | |
402 | val = BUCK_MODE_SLEEP; | |
403 | break; | |
404 | default: | |
405 | return -EINVAL; | |
406 | } | |
407 | ||
408 | return regmap_field_write(regl->mode, val); | |
409 | } | |
410 | ||
411 | static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) | |
412 | { | |
413 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
414 | unsigned val; | |
415 | ||
416 | switch (mode) { | |
417 | case REGULATOR_MODE_NORMAL: | |
418 | val = 0; | |
419 | break; | |
420 | case REGULATOR_MODE_STANDBY: | |
421 | val = 1; | |
422 | break; | |
423 | default: | |
424 | return -EINVAL; | |
425 | } | |
426 | ||
427 | return regmap_field_write(regl->suspend_sleep, val); | |
428 | } | |
429 | ||
430 | static struct regulator_ops da9063_buck_ops = { | |
431 | .enable = regulator_enable_regmap, | |
432 | .disable = regulator_disable_regmap, | |
433 | .is_enabled = regulator_is_enabled_regmap, | |
434 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
435 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
436 | .list_voltage = regulator_list_voltage_linear, | |
437 | .set_current_limit = da9063_set_current_limit, | |
438 | .get_current_limit = da9063_get_current_limit, | |
439 | .set_mode = da9063_buck_set_mode, | |
440 | .get_mode = da9063_buck_get_mode, | |
441 | .get_status = da9063_buck_get_status, | |
442 | .set_suspend_voltage = da9063_set_suspend_voltage, | |
443 | .set_suspend_enable = da9063_suspend_enable, | |
444 | .set_suspend_disable = da9063_suspend_disable, | |
445 | .set_suspend_mode = da9063_buck_set_suspend_mode, | |
446 | }; | |
447 | ||
448 | static struct regulator_ops da9063_ldo_ops = { | |
449 | .enable = regulator_enable_regmap, | |
450 | .disable = regulator_disable_regmap, | |
451 | .is_enabled = regulator_is_enabled_regmap, | |
452 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
453 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
454 | .list_voltage = regulator_list_voltage_linear, | |
455 | .set_mode = da9063_ldo_set_mode, | |
456 | .get_mode = da9063_ldo_get_mode, | |
457 | .get_status = da9063_ldo_get_status, | |
458 | .set_suspend_voltage = da9063_set_suspend_voltage, | |
459 | .set_suspend_enable = da9063_suspend_enable, | |
460 | .set_suspend_disable = da9063_suspend_disable, | |
461 | .set_suspend_mode = da9063_ldo_set_suspend_mode, | |
462 | }; | |
463 | ||
464 | /* Info of regulators for DA9063 */ | |
465 | static const struct da9063_regulator_info da9063_regulator_info[] = { | |
466 | { | |
467 | DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, | |
468 | da9063_buck_a_limits), | |
469 | DA9063_BUCK_COMMON_FIELDS(BCORE1), | |
470 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), | |
471 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, | |
472 | DA9063_BCORE1_ILIM_MASK), | |
473 | }, | |
474 | { | |
475 | DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, | |
476 | da9063_buck_a_limits), | |
477 | DA9063_BUCK_COMMON_FIELDS(BCORE2), | |
478 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL), | |
479 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, | |
480 | DA9063_BCORE2_ILIM_MASK), | |
481 | }, | |
482 | { | |
483 | DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, | |
484 | da9063_buck_a_limits), | |
485 | DA9063_BUCK_COMMON_FIELDS(BPRO), | |
486 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL), | |
487 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, | |
488 | DA9063_BPRO_ILIM_MASK), | |
489 | }, | |
490 | { | |
491 | DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, | |
492 | da9063_buck_b_limits), | |
493 | DA9063_BUCK_COMMON_FIELDS(BMEM), | |
494 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), | |
495 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, | |
496 | DA9063_BMEM_ILIM_MASK), | |
497 | }, | |
498 | { | |
499 | DA9063_BUCK(DA9063, BIO, 800, 20, 3340, | |
500 | da9063_buck_b_limits), | |
501 | DA9063_BUCK_COMMON_FIELDS(BIO), | |
502 | .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL), | |
503 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, | |
504 | DA9063_BIO_ILIM_MASK), | |
505 | }, | |
506 | { | |
507 | DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, | |
508 | da9063_buck_b_limits), | |
509 | DA9063_BUCK_COMMON_FIELDS(BPERI), | |
510 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL), | |
511 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, | |
512 | DA9063_BPERI_ILIM_MASK), | |
513 | }, | |
514 | { | |
515 | DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, | |
516 | da9063_bcores_merged_limits), | |
517 | /* BCORES_MERGED uses the same register fields as BCORE1 */ | |
518 | DA9063_BUCK_COMMON_FIELDS(BCORE1), | |
519 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), | |
520 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, | |
521 | DA9063_BCORE1_ILIM_MASK), | |
522 | }, | |
523 | { | |
524 | DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, | |
525 | da9063_bmem_bio_merged_limits), | |
526 | /* BMEM_BIO_MERGED uses the same register fields as BMEM */ | |
527 | DA9063_BUCK_COMMON_FIELDS(BMEM), | |
528 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), | |
529 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, | |
530 | DA9063_BMEM_ILIM_MASK), | |
531 | }, | |
532 | { | |
533 | DA9063_LDO(DA9063, LDO1, 600, 20, 1860), | |
534 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL), | |
535 | }, | |
536 | { | |
537 | DA9063_LDO(DA9063, LDO2, 600, 20, 1860), | |
538 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL), | |
539 | }, | |
540 | { | |
541 | DA9063_LDO(DA9063, LDO3, 900, 20, 3440), | |
542 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL), | |
543 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), | |
544 | }, | |
545 | { | |
546 | DA9063_LDO(DA9063, LDO4, 900, 20, 3440), | |
547 | .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL), | |
548 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), | |
549 | }, | |
550 | { | |
551 | DA9063_LDO(DA9063, LDO5, 900, 50, 3600), | |
552 | .suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL), | |
553 | }, | |
554 | { | |
555 | DA9063_LDO(DA9063, LDO6, 900, 50, 3600), | |
556 | .suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL), | |
557 | }, | |
558 | { | |
559 | DA9063_LDO(DA9063, LDO7, 900, 50, 3600), | |
560 | .suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL), | |
561 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), | |
562 | }, | |
563 | { | |
564 | DA9063_LDO(DA9063, LDO8, 900, 50, 3600), | |
565 | .suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL), | |
566 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), | |
567 | }, | |
568 | { | |
569 | DA9063_LDO(DA9063, LDO9, 950, 50, 3600), | |
570 | .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL), | |
571 | }, | |
572 | { | |
573 | DA9063_LDO(DA9063, LDO10, 900, 50, 3600), | |
574 | .suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL), | |
575 | }, | |
576 | { | |
577 | DA9063_LDO(DA9063, LDO11, 900, 50, 3600), | |
578 | .suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL), | |
579 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), | |
580 | }, | |
581 | }; | |
582 | ||
583 | /* Link chip model with regulators info table */ | |
584 | static struct da9063_dev_model regulators_models[] = { | |
585 | { | |
586 | .regulator_info = da9063_regulator_info, | |
587 | .n_regulators = ARRAY_SIZE(da9063_regulator_info), | |
588 | .dev_model = PMIC_DA9063, | |
589 | }, | |
590 | { } | |
591 | }; | |
592 | ||
593 | /* Regulator interrupt handlers */ | |
632b3d62 | 594 | static irqreturn_t da9063_ldo_lim_event(int irq, void *data) |
69ca3e58 KG |
595 | { |
596 | struct da9063_regulators *regulators = data; | |
597 | struct da9063 *hw = regulators->regulator[0].hw; | |
598 | struct da9063_regulator *regl; | |
599 | int bits, i , ret; | |
600 | ||
601 | ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); | |
602 | if (ret < 0) | |
603 | return IRQ_NONE; | |
604 | ||
605 | for (i = regulators->n_regulators - 1; i >= 0; i--) { | |
606 | regl = ®ulators->regulator[i]; | |
607 | if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) | |
608 | continue; | |
609 | ||
610 | if (BIT(regl->info->oc_event.lsb) & bits) | |
611 | regulator_notifier_call_chain(regl->rdev, | |
612 | REGULATOR_EVENT_OVER_CURRENT, NULL); | |
613 | } | |
614 | ||
615 | return IRQ_HANDLED; | |
616 | } | |
617 | ||
618 | /* | |
619 | * Probing and Initialisation functions | |
620 | */ | |
621 | static const struct regulator_init_data *da9063_get_regulator_initdata( | |
622 | const struct da9063_regulators_pdata *regl_pdata, int id) | |
623 | { | |
624 | int i; | |
625 | ||
626 | for (i = 0; i < regl_pdata->n_regulators; i++) { | |
627 | if (id == regl_pdata->regulator_data[i].id) | |
628 | return regl_pdata->regulator_data[i].initdata; | |
629 | } | |
630 | ||
631 | return NULL; | |
632 | } | |
633 | ||
634 | #ifdef CONFIG_OF | |
635 | static struct of_regulator_match da9063_matches[] = { | |
636 | [DA9063_ID_BCORE1] = { .name = "bcore1" }, | |
637 | [DA9063_ID_BCORE2] = { .name = "bcore2" }, | |
638 | [DA9063_ID_BPRO] = { .name = "bpro", }, | |
639 | [DA9063_ID_BMEM] = { .name = "bmem", }, | |
640 | [DA9063_ID_BIO] = { .name = "bio", }, | |
641 | [DA9063_ID_BPERI] = { .name = "bperi", }, | |
642 | [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, | |
643 | [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, | |
644 | [DA9063_ID_LDO1] = { .name = "ldo1", }, | |
645 | [DA9063_ID_LDO2] = { .name = "ldo2", }, | |
646 | [DA9063_ID_LDO3] = { .name = "ldo3", }, | |
647 | [DA9063_ID_LDO4] = { .name = "ldo4", }, | |
648 | [DA9063_ID_LDO5] = { .name = "ldo5", }, | |
649 | [DA9063_ID_LDO6] = { .name = "ldo6", }, | |
650 | [DA9063_ID_LDO7] = { .name = "ldo7", }, | |
651 | [DA9063_ID_LDO8] = { .name = "ldo8", }, | |
652 | [DA9063_ID_LDO9] = { .name = "ldo9", }, | |
653 | [DA9063_ID_LDO10] = { .name = "ldo10", }, | |
654 | [DA9063_ID_LDO11] = { .name = "ldo11", }, | |
655 | }; | |
656 | ||
657 | static struct da9063_regulators_pdata *da9063_parse_regulators_dt( | |
658 | struct platform_device *pdev, | |
659 | struct of_regulator_match **da9063_reg_matches) | |
660 | { | |
661 | struct da9063_regulators_pdata *pdata; | |
662 | struct da9063_regulator_data *rdata; | |
663 | struct device_node *node; | |
664 | int i, n, num; | |
665 | ||
25cc275a | 666 | node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); |
69ca3e58 KG |
667 | if (!node) { |
668 | dev_err(&pdev->dev, "Regulators device node not found\n"); | |
669 | return ERR_PTR(-ENODEV); | |
670 | } | |
671 | ||
672 | num = of_regulator_match(&pdev->dev, node, da9063_matches, | |
673 | ARRAY_SIZE(da9063_matches)); | |
2da8215c | 674 | of_node_put(node); |
69ca3e58 KG |
675 | if (num < 0) { |
676 | dev_err(&pdev->dev, "Failed to match regulators\n"); | |
677 | return ERR_PTR(-EINVAL); | |
678 | } | |
679 | ||
680 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); | |
681 | if (!pdata) | |
682 | return ERR_PTR(-ENOMEM); | |
683 | ||
684 | pdata->regulator_data = devm_kzalloc(&pdev->dev, | |
685 | num * sizeof(*pdata->regulator_data), | |
686 | GFP_KERNEL); | |
687 | if (!pdata->regulator_data) | |
688 | return ERR_PTR(-ENOMEM); | |
689 | pdata->n_regulators = num; | |
690 | ||
691 | n = 0; | |
692 | for (i = 0; i < ARRAY_SIZE(da9063_matches); i++) { | |
693 | if (!da9063_matches[i].init_data) | |
694 | continue; | |
695 | ||
696 | rdata = &pdata->regulator_data[n]; | |
697 | rdata->id = i; | |
698 | rdata->initdata = da9063_matches[i].init_data; | |
699 | ||
700 | n++; | |
424fb281 | 701 | } |
69ca3e58 KG |
702 | |
703 | *da9063_reg_matches = da9063_matches; | |
704 | return pdata; | |
705 | } | |
706 | #else | |
707 | static struct da9063_regulators_pdata *da9063_parse_regulators_dt( | |
708 | struct platform_device *pdev, | |
709 | struct of_regulator_match **da9063_reg_matches) | |
710 | { | |
f377ed10 | 711 | *da9063_reg_matches = NULL; |
e8cb204c | 712 | return ERR_PTR(-ENODEV); |
69ca3e58 KG |
713 | } |
714 | #endif | |
715 | ||
716 | static int da9063_regulator_probe(struct platform_device *pdev) | |
717 | { | |
718 | struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); | |
719 | struct da9063_pdata *da9063_pdata = dev_get_platdata(da9063->dev); | |
0fdfd40a | 720 | struct of_regulator_match *da9063_reg_matches = NULL; |
69ca3e58 KG |
721 | struct da9063_regulators_pdata *regl_pdata; |
722 | const struct da9063_dev_model *model; | |
723 | struct da9063_regulators *regulators; | |
724 | struct da9063_regulator *regl; | |
725 | struct regulator_config config; | |
726 | bool bcores_merged, bmem_bio_merged; | |
727 | int id, irq, n, n_regulators, ret, val; | |
728 | size_t size; | |
729 | ||
730 | regl_pdata = da9063_pdata ? da9063_pdata->regulators_pdata : NULL; | |
731 | ||
732 | if (!regl_pdata) | |
733 | regl_pdata = da9063_parse_regulators_dt(pdev, | |
734 | &da9063_reg_matches); | |
735 | ||
736 | if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { | |
737 | dev_err(&pdev->dev, | |
738 | "No regulators defined for the platform\n"); | |
739 | return PTR_ERR(regl_pdata); | |
740 | } | |
741 | ||
742 | /* Find regulators set for particular device model */ | |
743 | for (model = regulators_models; model->regulator_info; model++) { | |
744 | if (model->dev_model == da9063->model) | |
745 | break; | |
746 | } | |
747 | if (!model->regulator_info) { | |
748 | dev_err(&pdev->dev, "Chip model not recognised (%u)\n", | |
749 | da9063->model); | |
750 | return -ENODEV; | |
751 | } | |
752 | ||
753 | ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); | |
754 | if (ret < 0) { | |
755 | dev_err(&pdev->dev, | |
756 | "Error while reading BUCKs configuration\n"); | |
8a7963d5 | 757 | return ret; |
69ca3e58 KG |
758 | } |
759 | bcores_merged = val & DA9063_BCORE_MERGE; | |
760 | bmem_bio_merged = val & DA9063_BUCK_MERGE; | |
761 | ||
762 | n_regulators = model->n_regulators; | |
763 | if (bcores_merged) | |
764 | n_regulators -= 2; /* remove BCORE1, BCORE2 */ | |
765 | else | |
766 | n_regulators--; /* remove BCORES_MERGED */ | |
767 | if (bmem_bio_merged) | |
768 | n_regulators -= 2; /* remove BMEM, BIO */ | |
769 | else | |
770 | n_regulators--; /* remove BMEM_BIO_MERGED */ | |
771 | ||
772 | /* Allocate memory required by usable regulators */ | |
773 | size = sizeof(struct da9063_regulators) + | |
774 | n_regulators * sizeof(struct da9063_regulator); | |
775 | regulators = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); | |
8b5baa56 | 776 | if (!regulators) |
69ca3e58 | 777 | return -ENOMEM; |
69ca3e58 KG |
778 | |
779 | regulators->n_regulators = n_regulators; | |
780 | platform_set_drvdata(pdev, regulators); | |
781 | ||
782 | /* Register all regulators declared in platform information */ | |
783 | n = 0; | |
784 | id = 0; | |
785 | while (n < regulators->n_regulators) { | |
786 | /* Skip regulator IDs depending on merge mode configuration */ | |
787 | switch (id) { | |
788 | case DA9063_ID_BCORE1: | |
789 | case DA9063_ID_BCORE2: | |
790 | if (bcores_merged) { | |
791 | id++; | |
792 | continue; | |
793 | } | |
794 | break; | |
795 | case DA9063_ID_BMEM: | |
796 | case DA9063_ID_BIO: | |
797 | if (bmem_bio_merged) { | |
798 | id++; | |
799 | continue; | |
800 | } | |
801 | break; | |
802 | case DA9063_ID_BCORES_MERGED: | |
803 | if (!bcores_merged) { | |
804 | id++; | |
805 | continue; | |
806 | } | |
807 | break; | |
808 | case DA9063_ID_BMEM_BIO_MERGED: | |
809 | if (!bmem_bio_merged) { | |
810 | id++; | |
811 | continue; | |
812 | } | |
813 | break; | |
814 | } | |
815 | ||
816 | /* Initialise regulator structure */ | |
817 | regl = ®ulators->regulator[n]; | |
818 | regl->hw = da9063; | |
819 | regl->info = &model->regulator_info[id]; | |
820 | regl->desc = regl->info->desc; | |
821 | regl->desc.type = REGULATOR_VOLTAGE; | |
822 | regl->desc.owner = THIS_MODULE; | |
823 | ||
824 | if (regl->info->mode.reg) | |
825 | regl->mode = devm_regmap_field_alloc(&pdev->dev, | |
826 | da9063->regmap, regl->info->mode); | |
827 | if (regl->info->suspend.reg) | |
828 | regl->suspend = devm_regmap_field_alloc(&pdev->dev, | |
829 | da9063->regmap, regl->info->suspend); | |
830 | if (regl->info->sleep.reg) | |
831 | regl->sleep = devm_regmap_field_alloc(&pdev->dev, | |
832 | da9063->regmap, regl->info->sleep); | |
833 | if (regl->info->suspend_sleep.reg) | |
834 | regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, | |
835 | da9063->regmap, regl->info->suspend_sleep); | |
836 | if (regl->info->ilimit.reg) | |
837 | regl->ilimit = devm_regmap_field_alloc(&pdev->dev, | |
838 | da9063->regmap, regl->info->ilimit); | |
839 | ||
840 | /* Register regulator */ | |
841 | memset(&config, 0, sizeof(config)); | |
842 | config.dev = &pdev->dev; | |
843 | config.init_data = da9063_get_regulator_initdata(regl_pdata, id); | |
844 | config.driver_data = regl; | |
845 | if (da9063_reg_matches) | |
846 | config.of_node = da9063_reg_matches[id].of_node; | |
847 | config.regmap = da9063->regmap; | |
e97bba91 JH |
848 | regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, |
849 | &config); | |
e515800b | 850 | if (IS_ERR(regl->rdev)) { |
69ca3e58 KG |
851 | dev_err(&pdev->dev, |
852 | "Failed to register %s regulator\n", | |
853 | regl->desc.name); | |
e97bba91 | 854 | return PTR_ERR(regl->rdev); |
69ca3e58 KG |
855 | } |
856 | id++; | |
857 | n++; | |
858 | } | |
859 | ||
860 | /* LDOs overcurrent event support */ | |
861 | irq = platform_get_irq_byname(pdev, "LDO_LIM"); | |
862 | if (irq < 0) { | |
69ca3e58 | 863 | dev_err(&pdev->dev, "Failed to get IRQ.\n"); |
e97bba91 | 864 | return irq; |
69ca3e58 KG |
865 | } |
866 | ||
d87aef91 | 867 | ret = devm_request_threaded_irq(&pdev->dev, irq, |
8ad365c9 DL |
868 | NULL, da9063_ldo_lim_event, |
869 | IRQF_TRIGGER_LOW | IRQF_ONESHOT, | |
870 | "LDO_LIM", regulators); | |
871 | if (ret) { | |
d87aef91 AL |
872 | dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n"); |
873 | return ret; | |
69ca3e58 KG |
874 | } |
875 | ||
876 | return 0; | |
69ca3e58 KG |
877 | } |
878 | ||
69ca3e58 KG |
879 | static struct platform_driver da9063_regulator_driver = { |
880 | .driver = { | |
881 | .name = DA9063_DRVNAME_REGULATORS, | |
69ca3e58 KG |
882 | }, |
883 | .probe = da9063_regulator_probe, | |
69ca3e58 KG |
884 | }; |
885 | ||
886 | static int __init da9063_regulator_init(void) | |
887 | { | |
888 | return platform_driver_register(&da9063_regulator_driver); | |
889 | } | |
890 | subsys_initcall(da9063_regulator_init); | |
891 | ||
892 | static void __exit da9063_regulator_cleanup(void) | |
893 | { | |
894 | platform_driver_unregister(&da9063_regulator_driver); | |
895 | } | |
896 | module_exit(da9063_regulator_cleanup); | |
897 | ||
898 | ||
899 | /* Module information */ | |
900 | MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); | |
901 | MODULE_DESCRIPTION("DA9063 regulators driver"); | |
902 | MODULE_LICENSE("GPL"); | |
903 | MODULE_ALIAS("paltform:" DA9063_DRVNAME_REGULATORS); |