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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 { | |
120 | int irq_ldo_lim; | |
121 | int irq_uvov; | |
122 | ||
123 | unsigned n_regulators; | |
124 | /* Array size to be defined during init. Keep at end. */ | |
125 | struct da9063_regulator regulator[0]; | |
126 | }; | |
127 | ||
128 | /* BUCK modes for DA9063 */ | |
129 | enum { | |
130 | BUCK_MODE_MANUAL, /* 0 */ | |
131 | BUCK_MODE_SLEEP, /* 1 */ | |
132 | BUCK_MODE_SYNC, /* 2 */ | |
133 | BUCK_MODE_AUTO /* 3 */ | |
134 | }; | |
135 | ||
136 | /* Regulator operations */ | |
137 | ||
138 | /* Current limits array (in uA) for BCORE1, BCORE2, BPRO. | |
139 | Entry indexes corresponds to register values. */ | |
140 | static const int da9063_buck_a_limits[] = { | |
141 | 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, | |
142 | 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 | |
143 | }; | |
144 | ||
145 | /* Current limits array (in uA) for BMEM, BIO, BPERI. | |
146 | Entry indexes corresponds to register values. */ | |
147 | static const int da9063_buck_b_limits[] = { | |
148 | 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, | |
149 | 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 | |
150 | }; | |
151 | ||
152 | /* Current limits array (in uA) for merged BCORE1 and BCORE2. | |
153 | Entry indexes corresponds to register values. */ | |
154 | static const int da9063_bcores_merged_limits[] = { | |
155 | 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, | |
156 | 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 | |
157 | }; | |
158 | ||
159 | /* Current limits array (in uA) for merged BMEM and BIO. | |
160 | Entry indexes corresponds to register values. */ | |
161 | static const int da9063_bmem_bio_merged_limits[] = { | |
162 | 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, | |
163 | 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 | |
164 | }; | |
165 | ||
166 | static int da9063_set_current_limit(struct regulator_dev *rdev, | |
167 | int min_uA, int max_uA) | |
168 | { | |
169 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
170 | const struct da9063_regulator_info *rinfo = regl->info; | |
556dcf90 | 171 | int n, tval; |
69ca3e58 KG |
172 | |
173 | for (n = 0; n < rinfo->n_current_limits; n++) { | |
174 | tval = rinfo->current_limits[n]; | |
556dcf90 AL |
175 | if (tval >= min_uA && tval <= max_uA) |
176 | return regmap_field_write(regl->ilimit, n); | |
69ca3e58 | 177 | } |
69ca3e58 | 178 | |
556dcf90 | 179 | return -EINVAL; |
69ca3e58 KG |
180 | } |
181 | ||
182 | static int da9063_get_current_limit(struct regulator_dev *rdev) | |
183 | { | |
184 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
185 | const struct da9063_regulator_info *rinfo = regl->info; | |
186 | unsigned int sel; | |
187 | int ret; | |
188 | ||
189 | ret = regmap_field_read(regl->ilimit, &sel); | |
190 | if (ret < 0) | |
191 | return ret; | |
192 | ||
193 | if (sel >= rinfo->n_current_limits) | |
194 | sel = rinfo->n_current_limits - 1; | |
195 | ||
196 | return rinfo->current_limits[sel]; | |
197 | } | |
198 | ||
199 | static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode) | |
200 | { | |
201 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
202 | unsigned val; | |
203 | ||
204 | switch (mode) { | |
205 | case REGULATOR_MODE_FAST: | |
206 | val = BUCK_MODE_SYNC; | |
207 | break; | |
208 | case REGULATOR_MODE_NORMAL: | |
209 | val = BUCK_MODE_AUTO; | |
210 | break; | |
211 | case REGULATOR_MODE_STANDBY: | |
212 | val = BUCK_MODE_SLEEP; | |
213 | break; | |
214 | default: | |
215 | return -EINVAL; | |
216 | } | |
217 | ||
218 | return regmap_field_write(regl->mode, val); | |
219 | } | |
220 | ||
221 | /* | |
222 | * Bucks use single mode register field for normal operation | |
223 | * and suspend state. | |
224 | * There are 3 modes to map to: FAST, NORMAL, and STANDBY. | |
225 | */ | |
226 | ||
227 | static unsigned da9063_buck_get_mode(struct regulator_dev *rdev) | |
228 | { | |
229 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
230 | struct regmap_field *field; | |
231 | unsigned int val, mode = 0; | |
232 | int ret; | |
233 | ||
234 | ret = regmap_field_read(regl->mode, &val); | |
235 | if (ret < 0) | |
236 | return ret; | |
237 | ||
238 | switch (val) { | |
239 | default: | |
240 | case BUCK_MODE_MANUAL: | |
241 | mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY; | |
242 | /* Sleep flag bit decides the mode */ | |
243 | break; | |
244 | case BUCK_MODE_SLEEP: | |
245 | return REGULATOR_MODE_STANDBY; | |
246 | case BUCK_MODE_SYNC: | |
247 | return REGULATOR_MODE_FAST; | |
248 | case BUCK_MODE_AUTO: | |
249 | return REGULATOR_MODE_NORMAL; | |
250 | } | |
251 | ||
252 | /* Detect current regulator state */ | |
253 | ret = regmap_field_read(regl->suspend, &val); | |
254 | if (ret < 0) | |
255 | return 0; | |
256 | ||
257 | /* Read regulator mode from proper register, depending on state */ | |
258 | if (val) | |
259 | field = regl->suspend_sleep; | |
260 | else | |
261 | field = regl->sleep; | |
262 | ||
263 | ret = regmap_field_read(field, &val); | |
264 | if (ret < 0) | |
265 | return 0; | |
266 | ||
267 | if (val) | |
268 | mode &= REGULATOR_MODE_STANDBY; | |
269 | else | |
270 | mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST; | |
271 | ||
272 | return mode; | |
273 | } | |
274 | ||
275 | /* | |
276 | * LDOs use sleep flags - one for normal and one for suspend state. | |
277 | * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. | |
278 | */ | |
279 | ||
280 | static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned mode) | |
281 | { | |
282 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
283 | unsigned val; | |
284 | ||
285 | switch (mode) { | |
286 | case REGULATOR_MODE_NORMAL: | |
287 | val = 0; | |
288 | break; | |
289 | case REGULATOR_MODE_STANDBY: | |
290 | val = 1; | |
291 | break; | |
292 | default: | |
293 | return -EINVAL; | |
294 | } | |
295 | ||
296 | return regmap_field_write(regl->sleep, val); | |
297 | } | |
298 | ||
299 | static unsigned da9063_ldo_get_mode(struct regulator_dev *rdev) | |
300 | { | |
301 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
302 | struct regmap_field *field; | |
303 | int ret, val; | |
304 | ||
305 | /* Detect current regulator state */ | |
306 | ret = regmap_field_read(regl->suspend, &val); | |
307 | if (ret < 0) | |
308 | return 0; | |
309 | ||
310 | /* Read regulator mode from proper register, depending on state */ | |
311 | if (val) | |
312 | field = regl->suspend_sleep; | |
313 | else | |
314 | field = regl->sleep; | |
315 | ||
316 | ret = regmap_field_read(field, &val); | |
317 | if (ret < 0) | |
318 | return 0; | |
319 | ||
320 | if (val) | |
321 | return REGULATOR_MODE_STANDBY; | |
322 | else | |
323 | return REGULATOR_MODE_NORMAL; | |
324 | } | |
325 | ||
326 | static int da9063_buck_get_status(struct regulator_dev *rdev) | |
327 | { | |
328 | int ret = regulator_is_enabled_regmap(rdev); | |
329 | ||
330 | if (ret == 0) { | |
331 | ret = REGULATOR_STATUS_OFF; | |
332 | } else if (ret > 0) { | |
333 | ret = da9063_buck_get_mode(rdev); | |
334 | if (ret > 0) | |
335 | ret = regulator_mode_to_status(ret); | |
336 | else if (ret == 0) | |
337 | ret = -EIO; | |
338 | } | |
339 | ||
340 | return ret; | |
341 | } | |
342 | ||
343 | static int da9063_ldo_get_status(struct regulator_dev *rdev) | |
344 | { | |
345 | int ret = regulator_is_enabled_regmap(rdev); | |
346 | ||
347 | if (ret == 0) { | |
348 | ret = REGULATOR_STATUS_OFF; | |
349 | } else if (ret > 0) { | |
350 | ret = da9063_ldo_get_mode(rdev); | |
351 | if (ret > 0) | |
352 | ret = regulator_mode_to_status(ret); | |
353 | else if (ret == 0) | |
354 | ret = -EIO; | |
355 | } | |
356 | ||
357 | return ret; | |
358 | } | |
359 | ||
360 | static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) | |
361 | { | |
362 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
363 | const struct da9063_regulator_info *rinfo = regl->info; | |
364 | int ret, sel; | |
365 | ||
366 | sel = regulator_map_voltage_linear(rdev, uV, uV); | |
367 | if (sel < 0) | |
8a7963d5 | 368 | return sel; |
69ca3e58 KG |
369 | |
370 | sel <<= ffs(rdev->desc->vsel_mask) - 1; | |
371 | ||
372 | ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, | |
373 | rdev->desc->vsel_mask, sel); | |
374 | ||
375 | return ret; | |
376 | } | |
377 | ||
378 | static int da9063_suspend_enable(struct regulator_dev *rdev) | |
379 | { | |
380 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
381 | ||
382 | return regmap_field_write(regl->suspend, 1); | |
383 | } | |
384 | ||
385 | static int da9063_suspend_disable(struct regulator_dev *rdev) | |
386 | { | |
387 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
388 | ||
389 | return regmap_field_write(regl->suspend, 0); | |
390 | } | |
391 | ||
392 | static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) | |
393 | { | |
394 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
395 | int val; | |
396 | ||
397 | switch (mode) { | |
398 | case REGULATOR_MODE_FAST: | |
399 | val = BUCK_MODE_SYNC; | |
400 | break; | |
401 | case REGULATOR_MODE_NORMAL: | |
402 | val = BUCK_MODE_AUTO; | |
403 | break; | |
404 | case REGULATOR_MODE_STANDBY: | |
405 | val = BUCK_MODE_SLEEP; | |
406 | break; | |
407 | default: | |
408 | return -EINVAL; | |
409 | } | |
410 | ||
411 | return regmap_field_write(regl->mode, val); | |
412 | } | |
413 | ||
414 | static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) | |
415 | { | |
416 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
417 | unsigned val; | |
418 | ||
419 | switch (mode) { | |
420 | case REGULATOR_MODE_NORMAL: | |
421 | val = 0; | |
422 | break; | |
423 | case REGULATOR_MODE_STANDBY: | |
424 | val = 1; | |
425 | break; | |
426 | default: | |
427 | return -EINVAL; | |
428 | } | |
429 | ||
430 | return regmap_field_write(regl->suspend_sleep, val); | |
431 | } | |
432 | ||
433 | static struct regulator_ops da9063_buck_ops = { | |
434 | .enable = regulator_enable_regmap, | |
435 | .disable = regulator_disable_regmap, | |
436 | .is_enabled = regulator_is_enabled_regmap, | |
437 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
438 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
439 | .list_voltage = regulator_list_voltage_linear, | |
440 | .set_current_limit = da9063_set_current_limit, | |
441 | .get_current_limit = da9063_get_current_limit, | |
442 | .set_mode = da9063_buck_set_mode, | |
443 | .get_mode = da9063_buck_get_mode, | |
444 | .get_status = da9063_buck_get_status, | |
445 | .set_suspend_voltage = da9063_set_suspend_voltage, | |
446 | .set_suspend_enable = da9063_suspend_enable, | |
447 | .set_suspend_disable = da9063_suspend_disable, | |
448 | .set_suspend_mode = da9063_buck_set_suspend_mode, | |
449 | }; | |
450 | ||
451 | static struct regulator_ops da9063_ldo_ops = { | |
452 | .enable = regulator_enable_regmap, | |
453 | .disable = regulator_disable_regmap, | |
454 | .is_enabled = regulator_is_enabled_regmap, | |
455 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
456 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
457 | .list_voltage = regulator_list_voltage_linear, | |
458 | .set_mode = da9063_ldo_set_mode, | |
459 | .get_mode = da9063_ldo_get_mode, | |
460 | .get_status = da9063_ldo_get_status, | |
461 | .set_suspend_voltage = da9063_set_suspend_voltage, | |
462 | .set_suspend_enable = da9063_suspend_enable, | |
463 | .set_suspend_disable = da9063_suspend_disable, | |
464 | .set_suspend_mode = da9063_ldo_set_suspend_mode, | |
465 | }; | |
466 | ||
467 | /* Info of regulators for DA9063 */ | |
468 | static const struct da9063_regulator_info da9063_regulator_info[] = { | |
469 | { | |
470 | DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, | |
471 | da9063_buck_a_limits), | |
472 | DA9063_BUCK_COMMON_FIELDS(BCORE1), | |
473 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), | |
474 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, | |
475 | DA9063_BCORE1_ILIM_MASK), | |
476 | }, | |
477 | { | |
478 | DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, | |
479 | da9063_buck_a_limits), | |
480 | DA9063_BUCK_COMMON_FIELDS(BCORE2), | |
481 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL), | |
482 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, | |
483 | DA9063_BCORE2_ILIM_MASK), | |
484 | }, | |
485 | { | |
486 | DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, | |
487 | da9063_buck_a_limits), | |
488 | DA9063_BUCK_COMMON_FIELDS(BPRO), | |
489 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL), | |
490 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, | |
491 | DA9063_BPRO_ILIM_MASK), | |
492 | }, | |
493 | { | |
494 | DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, | |
495 | da9063_buck_b_limits), | |
496 | DA9063_BUCK_COMMON_FIELDS(BMEM), | |
497 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), | |
498 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, | |
499 | DA9063_BMEM_ILIM_MASK), | |
500 | }, | |
501 | { | |
502 | DA9063_BUCK(DA9063, BIO, 800, 20, 3340, | |
503 | da9063_buck_b_limits), | |
504 | DA9063_BUCK_COMMON_FIELDS(BIO), | |
505 | .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL), | |
506 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, | |
507 | DA9063_BIO_ILIM_MASK), | |
508 | }, | |
509 | { | |
510 | DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, | |
511 | da9063_buck_b_limits), | |
512 | DA9063_BUCK_COMMON_FIELDS(BPERI), | |
513 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL), | |
514 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, | |
515 | DA9063_BPERI_ILIM_MASK), | |
516 | }, | |
517 | { | |
518 | DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, | |
519 | da9063_bcores_merged_limits), | |
520 | /* BCORES_MERGED uses the same register fields as BCORE1 */ | |
521 | DA9063_BUCK_COMMON_FIELDS(BCORE1), | |
522 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), | |
523 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, | |
524 | DA9063_BCORE1_ILIM_MASK), | |
525 | }, | |
526 | { | |
527 | DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, | |
528 | da9063_bmem_bio_merged_limits), | |
529 | /* BMEM_BIO_MERGED uses the same register fields as BMEM */ | |
530 | DA9063_BUCK_COMMON_FIELDS(BMEM), | |
531 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), | |
532 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, | |
533 | DA9063_BMEM_ILIM_MASK), | |
534 | }, | |
535 | { | |
536 | DA9063_LDO(DA9063, LDO1, 600, 20, 1860), | |
537 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL), | |
538 | }, | |
539 | { | |
540 | DA9063_LDO(DA9063, LDO2, 600, 20, 1860), | |
541 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL), | |
542 | }, | |
543 | { | |
544 | DA9063_LDO(DA9063, LDO3, 900, 20, 3440), | |
545 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL), | |
546 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), | |
547 | }, | |
548 | { | |
549 | DA9063_LDO(DA9063, LDO4, 900, 20, 3440), | |
550 | .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL), | |
551 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), | |
552 | }, | |
553 | { | |
554 | DA9063_LDO(DA9063, LDO5, 900, 50, 3600), | |
555 | .suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL), | |
556 | }, | |
557 | { | |
558 | DA9063_LDO(DA9063, LDO6, 900, 50, 3600), | |
559 | .suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL), | |
560 | }, | |
561 | { | |
562 | DA9063_LDO(DA9063, LDO7, 900, 50, 3600), | |
563 | .suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL), | |
564 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), | |
565 | }, | |
566 | { | |
567 | DA9063_LDO(DA9063, LDO8, 900, 50, 3600), | |
568 | .suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL), | |
569 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), | |
570 | }, | |
571 | { | |
572 | DA9063_LDO(DA9063, LDO9, 950, 50, 3600), | |
573 | .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL), | |
574 | }, | |
575 | { | |
576 | DA9063_LDO(DA9063, LDO10, 900, 50, 3600), | |
577 | .suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL), | |
578 | }, | |
579 | { | |
580 | DA9063_LDO(DA9063, LDO11, 900, 50, 3600), | |
581 | .suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL), | |
582 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), | |
583 | }, | |
584 | }; | |
585 | ||
586 | /* Link chip model with regulators info table */ | |
587 | static struct da9063_dev_model regulators_models[] = { | |
588 | { | |
589 | .regulator_info = da9063_regulator_info, | |
590 | .n_regulators = ARRAY_SIZE(da9063_regulator_info), | |
591 | .dev_model = PMIC_DA9063, | |
592 | }, | |
593 | { } | |
594 | }; | |
595 | ||
596 | /* Regulator interrupt handlers */ | |
632b3d62 | 597 | static irqreturn_t da9063_ldo_lim_event(int irq, void *data) |
69ca3e58 KG |
598 | { |
599 | struct da9063_regulators *regulators = data; | |
600 | struct da9063 *hw = regulators->regulator[0].hw; | |
601 | struct da9063_regulator *regl; | |
602 | int bits, i , ret; | |
603 | ||
604 | ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); | |
605 | if (ret < 0) | |
606 | return IRQ_NONE; | |
607 | ||
608 | for (i = regulators->n_regulators - 1; i >= 0; i--) { | |
609 | regl = ®ulators->regulator[i]; | |
610 | if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) | |
611 | continue; | |
612 | ||
613 | if (BIT(regl->info->oc_event.lsb) & bits) | |
614 | regulator_notifier_call_chain(regl->rdev, | |
615 | REGULATOR_EVENT_OVER_CURRENT, NULL); | |
616 | } | |
617 | ||
618 | return IRQ_HANDLED; | |
619 | } | |
620 | ||
621 | /* | |
622 | * Probing and Initialisation functions | |
623 | */ | |
624 | static const struct regulator_init_data *da9063_get_regulator_initdata( | |
625 | const struct da9063_regulators_pdata *regl_pdata, int id) | |
626 | { | |
627 | int i; | |
628 | ||
629 | for (i = 0; i < regl_pdata->n_regulators; i++) { | |
630 | if (id == regl_pdata->regulator_data[i].id) | |
631 | return regl_pdata->regulator_data[i].initdata; | |
632 | } | |
633 | ||
634 | return NULL; | |
635 | } | |
636 | ||
637 | #ifdef CONFIG_OF | |
638 | static struct of_regulator_match da9063_matches[] = { | |
639 | [DA9063_ID_BCORE1] = { .name = "bcore1" }, | |
640 | [DA9063_ID_BCORE2] = { .name = "bcore2" }, | |
641 | [DA9063_ID_BPRO] = { .name = "bpro", }, | |
642 | [DA9063_ID_BMEM] = { .name = "bmem", }, | |
643 | [DA9063_ID_BIO] = { .name = "bio", }, | |
644 | [DA9063_ID_BPERI] = { .name = "bperi", }, | |
645 | [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, | |
646 | [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, | |
647 | [DA9063_ID_LDO1] = { .name = "ldo1", }, | |
648 | [DA9063_ID_LDO2] = { .name = "ldo2", }, | |
649 | [DA9063_ID_LDO3] = { .name = "ldo3", }, | |
650 | [DA9063_ID_LDO4] = { .name = "ldo4", }, | |
651 | [DA9063_ID_LDO5] = { .name = "ldo5", }, | |
652 | [DA9063_ID_LDO6] = { .name = "ldo6", }, | |
653 | [DA9063_ID_LDO7] = { .name = "ldo7", }, | |
654 | [DA9063_ID_LDO8] = { .name = "ldo8", }, | |
655 | [DA9063_ID_LDO9] = { .name = "ldo9", }, | |
656 | [DA9063_ID_LDO10] = { .name = "ldo10", }, | |
657 | [DA9063_ID_LDO11] = { .name = "ldo11", }, | |
658 | }; | |
659 | ||
660 | static struct da9063_regulators_pdata *da9063_parse_regulators_dt( | |
661 | struct platform_device *pdev, | |
662 | struct of_regulator_match **da9063_reg_matches) | |
663 | { | |
664 | struct da9063_regulators_pdata *pdata; | |
665 | struct da9063_regulator_data *rdata; | |
666 | struct device_node *node; | |
667 | int i, n, num; | |
668 | ||
25cc275a | 669 | node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); |
69ca3e58 KG |
670 | if (!node) { |
671 | dev_err(&pdev->dev, "Regulators device node not found\n"); | |
672 | return ERR_PTR(-ENODEV); | |
673 | } | |
674 | ||
675 | num = of_regulator_match(&pdev->dev, node, da9063_matches, | |
676 | ARRAY_SIZE(da9063_matches)); | |
2da8215c | 677 | of_node_put(node); |
69ca3e58 KG |
678 | if (num < 0) { |
679 | dev_err(&pdev->dev, "Failed to match regulators\n"); | |
680 | return ERR_PTR(-EINVAL); | |
681 | } | |
682 | ||
683 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); | |
684 | if (!pdata) | |
685 | return ERR_PTR(-ENOMEM); | |
686 | ||
687 | pdata->regulator_data = devm_kzalloc(&pdev->dev, | |
688 | num * sizeof(*pdata->regulator_data), | |
689 | GFP_KERNEL); | |
690 | if (!pdata->regulator_data) | |
691 | return ERR_PTR(-ENOMEM); | |
692 | pdata->n_regulators = num; | |
693 | ||
694 | n = 0; | |
695 | for (i = 0; i < ARRAY_SIZE(da9063_matches); i++) { | |
696 | if (!da9063_matches[i].init_data) | |
697 | continue; | |
698 | ||
699 | rdata = &pdata->regulator_data[n]; | |
700 | rdata->id = i; | |
701 | rdata->initdata = da9063_matches[i].init_data; | |
702 | ||
703 | n++; | |
704 | }; | |
705 | ||
706 | *da9063_reg_matches = da9063_matches; | |
707 | return pdata; | |
708 | } | |
709 | #else | |
710 | static struct da9063_regulators_pdata *da9063_parse_regulators_dt( | |
711 | struct platform_device *pdev, | |
712 | struct of_regulator_match **da9063_reg_matches) | |
713 | { | |
f377ed10 | 714 | *da9063_reg_matches = NULL; |
e8cb204c | 715 | return ERR_PTR(-ENODEV); |
69ca3e58 KG |
716 | } |
717 | #endif | |
718 | ||
719 | static int da9063_regulator_probe(struct platform_device *pdev) | |
720 | { | |
721 | struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); | |
722 | struct da9063_pdata *da9063_pdata = dev_get_platdata(da9063->dev); | |
0fdfd40a | 723 | struct of_regulator_match *da9063_reg_matches = NULL; |
69ca3e58 KG |
724 | struct da9063_regulators_pdata *regl_pdata; |
725 | const struct da9063_dev_model *model; | |
726 | struct da9063_regulators *regulators; | |
727 | struct da9063_regulator *regl; | |
728 | struct regulator_config config; | |
729 | bool bcores_merged, bmem_bio_merged; | |
730 | int id, irq, n, n_regulators, ret, val; | |
731 | size_t size; | |
732 | ||
733 | regl_pdata = da9063_pdata ? da9063_pdata->regulators_pdata : NULL; | |
734 | ||
735 | if (!regl_pdata) | |
736 | regl_pdata = da9063_parse_regulators_dt(pdev, | |
737 | &da9063_reg_matches); | |
738 | ||
739 | if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { | |
740 | dev_err(&pdev->dev, | |
741 | "No regulators defined for the platform\n"); | |
742 | return PTR_ERR(regl_pdata); | |
743 | } | |
744 | ||
745 | /* Find regulators set for particular device model */ | |
746 | for (model = regulators_models; model->regulator_info; model++) { | |
747 | if (model->dev_model == da9063->model) | |
748 | break; | |
749 | } | |
750 | if (!model->regulator_info) { | |
751 | dev_err(&pdev->dev, "Chip model not recognised (%u)\n", | |
752 | da9063->model); | |
753 | return -ENODEV; | |
754 | } | |
755 | ||
756 | ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); | |
757 | if (ret < 0) { | |
758 | dev_err(&pdev->dev, | |
759 | "Error while reading BUCKs configuration\n"); | |
8a7963d5 | 760 | return ret; |
69ca3e58 KG |
761 | } |
762 | bcores_merged = val & DA9063_BCORE_MERGE; | |
763 | bmem_bio_merged = val & DA9063_BUCK_MERGE; | |
764 | ||
765 | n_regulators = model->n_regulators; | |
766 | if (bcores_merged) | |
767 | n_regulators -= 2; /* remove BCORE1, BCORE2 */ | |
768 | else | |
769 | n_regulators--; /* remove BCORES_MERGED */ | |
770 | if (bmem_bio_merged) | |
771 | n_regulators -= 2; /* remove BMEM, BIO */ | |
772 | else | |
773 | n_regulators--; /* remove BMEM_BIO_MERGED */ | |
774 | ||
775 | /* Allocate memory required by usable regulators */ | |
776 | size = sizeof(struct da9063_regulators) + | |
777 | n_regulators * sizeof(struct da9063_regulator); | |
778 | regulators = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); | |
8b5baa56 | 779 | if (!regulators) |
69ca3e58 | 780 | return -ENOMEM; |
69ca3e58 KG |
781 | |
782 | regulators->n_regulators = n_regulators; | |
783 | platform_set_drvdata(pdev, regulators); | |
784 | ||
785 | /* Register all regulators declared in platform information */ | |
786 | n = 0; | |
787 | id = 0; | |
788 | while (n < regulators->n_regulators) { | |
789 | /* Skip regulator IDs depending on merge mode configuration */ | |
790 | switch (id) { | |
791 | case DA9063_ID_BCORE1: | |
792 | case DA9063_ID_BCORE2: | |
793 | if (bcores_merged) { | |
794 | id++; | |
795 | continue; | |
796 | } | |
797 | break; | |
798 | case DA9063_ID_BMEM: | |
799 | case DA9063_ID_BIO: | |
800 | if (bmem_bio_merged) { | |
801 | id++; | |
802 | continue; | |
803 | } | |
804 | break; | |
805 | case DA9063_ID_BCORES_MERGED: | |
806 | if (!bcores_merged) { | |
807 | id++; | |
808 | continue; | |
809 | } | |
810 | break; | |
811 | case DA9063_ID_BMEM_BIO_MERGED: | |
812 | if (!bmem_bio_merged) { | |
813 | id++; | |
814 | continue; | |
815 | } | |
816 | break; | |
817 | } | |
818 | ||
819 | /* Initialise regulator structure */ | |
820 | regl = ®ulators->regulator[n]; | |
821 | regl->hw = da9063; | |
822 | regl->info = &model->regulator_info[id]; | |
823 | regl->desc = regl->info->desc; | |
824 | regl->desc.type = REGULATOR_VOLTAGE; | |
825 | regl->desc.owner = THIS_MODULE; | |
826 | ||
827 | if (regl->info->mode.reg) | |
828 | regl->mode = devm_regmap_field_alloc(&pdev->dev, | |
829 | da9063->regmap, regl->info->mode); | |
830 | if (regl->info->suspend.reg) | |
831 | regl->suspend = devm_regmap_field_alloc(&pdev->dev, | |
832 | da9063->regmap, regl->info->suspend); | |
833 | if (regl->info->sleep.reg) | |
834 | regl->sleep = devm_regmap_field_alloc(&pdev->dev, | |
835 | da9063->regmap, regl->info->sleep); | |
836 | if (regl->info->suspend_sleep.reg) | |
837 | regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, | |
838 | da9063->regmap, regl->info->suspend_sleep); | |
839 | if (regl->info->ilimit.reg) | |
840 | regl->ilimit = devm_regmap_field_alloc(&pdev->dev, | |
841 | da9063->regmap, regl->info->ilimit); | |
842 | ||
843 | /* Register regulator */ | |
844 | memset(&config, 0, sizeof(config)); | |
845 | config.dev = &pdev->dev; | |
846 | config.init_data = da9063_get_regulator_initdata(regl_pdata, id); | |
847 | config.driver_data = regl; | |
848 | if (da9063_reg_matches) | |
849 | config.of_node = da9063_reg_matches[id].of_node; | |
850 | config.regmap = da9063->regmap; | |
e97bba91 JH |
851 | regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, |
852 | &config); | |
e515800b | 853 | if (IS_ERR(regl->rdev)) { |
69ca3e58 KG |
854 | dev_err(&pdev->dev, |
855 | "Failed to register %s regulator\n", | |
856 | regl->desc.name); | |
e97bba91 | 857 | return PTR_ERR(regl->rdev); |
69ca3e58 KG |
858 | } |
859 | id++; | |
860 | n++; | |
861 | } | |
862 | ||
863 | /* LDOs overcurrent event support */ | |
864 | irq = platform_get_irq_byname(pdev, "LDO_LIM"); | |
865 | if (irq < 0) { | |
69ca3e58 | 866 | dev_err(&pdev->dev, "Failed to get IRQ.\n"); |
e97bba91 | 867 | return irq; |
69ca3e58 KG |
868 | } |
869 | ||
8ad365c9 DL |
870 | ret = request_threaded_irq(irq, |
871 | NULL, da9063_ldo_lim_event, | |
872 | IRQF_TRIGGER_LOW | IRQF_ONESHOT, | |
873 | "LDO_LIM", regulators); | |
874 | if (ret) { | |
875 | dev_err(&pdev->dev, | |
876 | "Failed to request LDO_LIM IRQ.\n"); | |
877 | regulators->irq_ldo_lim = -ENXIO; | |
69ca3e58 KG |
878 | } |
879 | ||
880 | return 0; | |
69ca3e58 KG |
881 | } |
882 | ||
883 | static int da9063_regulator_remove(struct platform_device *pdev) | |
884 | { | |
885 | struct da9063_regulators *regulators = platform_get_drvdata(pdev); | |
69ca3e58 KG |
886 | |
887 | free_irq(regulators->irq_ldo_lim, regulators); | |
888 | free_irq(regulators->irq_uvov, regulators); | |
889 | ||
69ca3e58 KG |
890 | return 0; |
891 | } | |
892 | ||
893 | static struct platform_driver da9063_regulator_driver = { | |
894 | .driver = { | |
895 | .name = DA9063_DRVNAME_REGULATORS, | |
69ca3e58 KG |
896 | }, |
897 | .probe = da9063_regulator_probe, | |
898 | .remove = da9063_regulator_remove, | |
899 | }; | |
900 | ||
901 | static int __init da9063_regulator_init(void) | |
902 | { | |
903 | return platform_driver_register(&da9063_regulator_driver); | |
904 | } | |
905 | subsys_initcall(da9063_regulator_init); | |
906 | ||
907 | static void __exit da9063_regulator_cleanup(void) | |
908 | { | |
909 | platform_driver_unregister(&da9063_regulator_driver); | |
910 | } | |
911 | module_exit(da9063_regulator_cleanup); | |
912 | ||
913 | ||
914 | /* Module information */ | |
915 | MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); | |
916 | MODULE_DESCRIPTION("DA9063 regulators driver"); | |
917 | MODULE_LICENSE("GPL"); | |
918 | MODULE_ALIAS("paltform:" DA9063_DRVNAME_REGULATORS); |