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1 | /* |
2 | * Regulator driver for DA9063 PMIC series | |
3 | * | |
4 | * Copyright 2012 Dialog Semiconductors Ltd. | |
5 | * Copyright 2013 Philipp Zabel, Pengutronix | |
6 | * | |
7 | * Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | * | |
14 | */ | |
15 | #include <linux/kernel.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/err.h> | |
19 | #include <linux/slab.h> | |
20 | #include <linux/of.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <linux/regmap.h> | |
23 | #include <linux/regulator/driver.h> | |
24 | #include <linux/regulator/machine.h> | |
25 | #include <linux/regulator/of_regulator.h> | |
26 | #include <linux/mfd/da9063/core.h> | |
27 | #include <linux/mfd/da9063/pdata.h> | |
28 | #include <linux/mfd/da9063/registers.h> | |
29 | ||
30 | ||
31 | /* Definition for registering regmap bit fields using a mask */ | |
32 | #define BFIELD(_reg, _mask) \ | |
33 | REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \ | |
34 | sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1) | |
35 | ||
36 | /* Regulator capabilities and registers description */ | |
37 | struct da9063_regulator_info { | |
38 | struct regulator_desc desc; | |
39 | ||
40 | /* Current limiting */ | |
41 | unsigned n_current_limits; | |
42 | const int *current_limits; | |
43 | ||
44 | /* DA9063 main register fields */ | |
45 | struct reg_field mode; /* buck mode of operation */ | |
46 | struct reg_field suspend; | |
47 | struct reg_field sleep; | |
48 | struct reg_field suspend_sleep; | |
49 | unsigned int suspend_vsel_reg; | |
50 | struct reg_field ilimit; | |
51 | ||
52 | /* DA9063 event detection bit */ | |
53 | struct reg_field oc_event; | |
54 | }; | |
55 | ||
56 | /* Macros for LDO */ | |
57 | #define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \ | |
58 | .desc.id = chip##_ID_##regl_name, \ | |
59 | .desc.name = __stringify(chip##_##regl_name), \ | |
60 | .desc.ops = &da9063_ldo_ops, \ | |
61 | .desc.min_uV = (min_mV) * 1000, \ | |
62 | .desc.uV_step = (step_mV) * 1000, \ | |
63 | .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1), \ | |
64 | .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ | |
65 | .desc.enable_mask = DA9063_LDO_EN, \ | |
66 | .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ | |
67 | .desc.vsel_mask = DA9063_V##regl_name##_MASK, \ | |
68 | .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \ | |
69 | .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \ | |
70 | .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \ | |
71 | .suspend_vsel_reg = DA9063_REG_V##regl_name##_B | |
72 | ||
73 | /* Macros for voltage DC/DC converters (BUCKs) */ | |
74 | #define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array) \ | |
75 | .desc.id = chip##_ID_##regl_name, \ | |
76 | .desc.name = __stringify(chip##_##regl_name), \ | |
77 | .desc.ops = &da9063_buck_ops, \ | |
78 | .desc.min_uV = (min_mV) * 1000, \ | |
79 | .desc.uV_step = (step_mV) * 1000, \ | |
80 | .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \ | |
81 | .current_limits = limits_array, \ | |
82 | .n_current_limits = ARRAY_SIZE(limits_array) | |
83 | ||
84 | #define DA9063_BUCK_COMMON_FIELDS(regl_name) \ | |
85 | .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ | |
86 | .desc.enable_mask = DA9063_BUCK_EN, \ | |
87 | .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ | |
88 | .desc.vsel_mask = DA9063_VBUCK_MASK, \ | |
89 | .desc.linear_min_sel = DA9063_VBUCK_BIAS, \ | |
90 | .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \ | |
91 | .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \ | |
92 | .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \ | |
93 | .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK) | |
94 | ||
95 | /* Defines asignment of regulators info table to chip model */ | |
96 | struct da9063_dev_model { | |
97 | const struct da9063_regulator_info *regulator_info; | |
98 | unsigned n_regulators; | |
99 | unsigned dev_model; | |
100 | }; | |
101 | ||
102 | /* Single regulator settings */ | |
103 | struct da9063_regulator { | |
104 | struct regulator_desc desc; | |
105 | struct regulator_dev *rdev; | |
106 | struct da9063 *hw; | |
107 | const struct da9063_regulator_info *info; | |
108 | ||
109 | struct regmap_field *mode; | |
110 | struct regmap_field *suspend; | |
111 | struct regmap_field *sleep; | |
112 | struct regmap_field *suspend_sleep; | |
113 | struct regmap_field *ilimit; | |
114 | }; | |
115 | ||
116 | /* Encapsulates all information for the regulators driver */ | |
117 | struct da9063_regulators { | |
118 | int irq_ldo_lim; | |
119 | int irq_uvov; | |
120 | ||
121 | unsigned n_regulators; | |
122 | /* Array size to be defined during init. Keep at end. */ | |
123 | struct da9063_regulator regulator[0]; | |
124 | }; | |
125 | ||
126 | /* BUCK modes for DA9063 */ | |
127 | enum { | |
128 | BUCK_MODE_MANUAL, /* 0 */ | |
129 | BUCK_MODE_SLEEP, /* 1 */ | |
130 | BUCK_MODE_SYNC, /* 2 */ | |
131 | BUCK_MODE_AUTO /* 3 */ | |
132 | }; | |
133 | ||
134 | /* Regulator operations */ | |
135 | ||
136 | /* Current limits array (in uA) for BCORE1, BCORE2, BPRO. | |
137 | Entry indexes corresponds to register values. */ | |
138 | static const int da9063_buck_a_limits[] = { | |
139 | 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, | |
140 | 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 | |
141 | }; | |
142 | ||
143 | /* Current limits array (in uA) for BMEM, BIO, BPERI. | |
144 | Entry indexes corresponds to register values. */ | |
145 | static const int da9063_buck_b_limits[] = { | |
146 | 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, | |
147 | 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 | |
148 | }; | |
149 | ||
150 | /* Current limits array (in uA) for merged BCORE1 and BCORE2. | |
151 | Entry indexes corresponds to register values. */ | |
152 | static const int da9063_bcores_merged_limits[] = { | |
153 | 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, | |
154 | 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 | |
155 | }; | |
156 | ||
157 | /* Current limits array (in uA) for merged BMEM and BIO. | |
158 | Entry indexes corresponds to register values. */ | |
159 | static const int da9063_bmem_bio_merged_limits[] = { | |
160 | 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, | |
161 | 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 | |
162 | }; | |
163 | ||
164 | static int da9063_set_current_limit(struct regulator_dev *rdev, | |
165 | int min_uA, int max_uA) | |
166 | { | |
167 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
168 | const struct da9063_regulator_info *rinfo = regl->info; | |
556dcf90 | 169 | int n, tval; |
69ca3e58 KG |
170 | |
171 | for (n = 0; n < rinfo->n_current_limits; n++) { | |
172 | tval = rinfo->current_limits[n]; | |
556dcf90 AL |
173 | if (tval >= min_uA && tval <= max_uA) |
174 | return regmap_field_write(regl->ilimit, n); | |
69ca3e58 | 175 | } |
69ca3e58 | 176 | |
556dcf90 | 177 | return -EINVAL; |
69ca3e58 KG |
178 | } |
179 | ||
180 | static int da9063_get_current_limit(struct regulator_dev *rdev) | |
181 | { | |
182 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
183 | const struct da9063_regulator_info *rinfo = regl->info; | |
184 | unsigned int sel; | |
185 | int ret; | |
186 | ||
187 | ret = regmap_field_read(regl->ilimit, &sel); | |
188 | if (ret < 0) | |
189 | return ret; | |
190 | ||
191 | if (sel >= rinfo->n_current_limits) | |
192 | sel = rinfo->n_current_limits - 1; | |
193 | ||
194 | return rinfo->current_limits[sel]; | |
195 | } | |
196 | ||
197 | static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode) | |
198 | { | |
199 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
200 | unsigned val; | |
201 | ||
202 | switch (mode) { | |
203 | case REGULATOR_MODE_FAST: | |
204 | val = BUCK_MODE_SYNC; | |
205 | break; | |
206 | case REGULATOR_MODE_NORMAL: | |
207 | val = BUCK_MODE_AUTO; | |
208 | break; | |
209 | case REGULATOR_MODE_STANDBY: | |
210 | val = BUCK_MODE_SLEEP; | |
211 | break; | |
212 | default: | |
213 | return -EINVAL; | |
214 | } | |
215 | ||
216 | return regmap_field_write(regl->mode, val); | |
217 | } | |
218 | ||
219 | /* | |
220 | * Bucks use single mode register field for normal operation | |
221 | * and suspend state. | |
222 | * There are 3 modes to map to: FAST, NORMAL, and STANDBY. | |
223 | */ | |
224 | ||
225 | static unsigned da9063_buck_get_mode(struct regulator_dev *rdev) | |
226 | { | |
227 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
228 | struct regmap_field *field; | |
229 | unsigned int val, mode = 0; | |
230 | int ret; | |
231 | ||
232 | ret = regmap_field_read(regl->mode, &val); | |
233 | if (ret < 0) | |
234 | return ret; | |
235 | ||
236 | switch (val) { | |
237 | default: | |
238 | case BUCK_MODE_MANUAL: | |
239 | mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY; | |
240 | /* Sleep flag bit decides the mode */ | |
241 | break; | |
242 | case BUCK_MODE_SLEEP: | |
243 | return REGULATOR_MODE_STANDBY; | |
244 | case BUCK_MODE_SYNC: | |
245 | return REGULATOR_MODE_FAST; | |
246 | case BUCK_MODE_AUTO: | |
247 | return REGULATOR_MODE_NORMAL; | |
248 | } | |
249 | ||
250 | /* Detect current regulator state */ | |
251 | ret = regmap_field_read(regl->suspend, &val); | |
252 | if (ret < 0) | |
253 | return 0; | |
254 | ||
255 | /* Read regulator mode from proper register, depending on state */ | |
256 | if (val) | |
257 | field = regl->suspend_sleep; | |
258 | else | |
259 | field = regl->sleep; | |
260 | ||
261 | ret = regmap_field_read(field, &val); | |
262 | if (ret < 0) | |
263 | return 0; | |
264 | ||
265 | if (val) | |
266 | mode &= REGULATOR_MODE_STANDBY; | |
267 | else | |
268 | mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST; | |
269 | ||
270 | return mode; | |
271 | } | |
272 | ||
273 | /* | |
274 | * LDOs use sleep flags - one for normal and one for suspend state. | |
275 | * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. | |
276 | */ | |
277 | ||
278 | static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned mode) | |
279 | { | |
280 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
281 | unsigned val; | |
282 | ||
283 | switch (mode) { | |
284 | case REGULATOR_MODE_NORMAL: | |
285 | val = 0; | |
286 | break; | |
287 | case REGULATOR_MODE_STANDBY: | |
288 | val = 1; | |
289 | break; | |
290 | default: | |
291 | return -EINVAL; | |
292 | } | |
293 | ||
294 | return regmap_field_write(regl->sleep, val); | |
295 | } | |
296 | ||
297 | static unsigned da9063_ldo_get_mode(struct regulator_dev *rdev) | |
298 | { | |
299 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
300 | struct regmap_field *field; | |
301 | int ret, val; | |
302 | ||
303 | /* Detect current regulator state */ | |
304 | ret = regmap_field_read(regl->suspend, &val); | |
305 | if (ret < 0) | |
306 | return 0; | |
307 | ||
308 | /* Read regulator mode from proper register, depending on state */ | |
309 | if (val) | |
310 | field = regl->suspend_sleep; | |
311 | else | |
312 | field = regl->sleep; | |
313 | ||
314 | ret = regmap_field_read(field, &val); | |
315 | if (ret < 0) | |
316 | return 0; | |
317 | ||
318 | if (val) | |
319 | return REGULATOR_MODE_STANDBY; | |
320 | else | |
321 | return REGULATOR_MODE_NORMAL; | |
322 | } | |
323 | ||
324 | static int da9063_buck_get_status(struct regulator_dev *rdev) | |
325 | { | |
326 | int ret = regulator_is_enabled_regmap(rdev); | |
327 | ||
328 | if (ret == 0) { | |
329 | ret = REGULATOR_STATUS_OFF; | |
330 | } else if (ret > 0) { | |
331 | ret = da9063_buck_get_mode(rdev); | |
332 | if (ret > 0) | |
333 | ret = regulator_mode_to_status(ret); | |
334 | else if (ret == 0) | |
335 | ret = -EIO; | |
336 | } | |
337 | ||
338 | return ret; | |
339 | } | |
340 | ||
341 | static int da9063_ldo_get_status(struct regulator_dev *rdev) | |
342 | { | |
343 | int ret = regulator_is_enabled_regmap(rdev); | |
344 | ||
345 | if (ret == 0) { | |
346 | ret = REGULATOR_STATUS_OFF; | |
347 | } else if (ret > 0) { | |
348 | ret = da9063_ldo_get_mode(rdev); | |
349 | if (ret > 0) | |
350 | ret = regulator_mode_to_status(ret); | |
351 | else if (ret == 0) | |
352 | ret = -EIO; | |
353 | } | |
354 | ||
355 | return ret; | |
356 | } | |
357 | ||
358 | static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) | |
359 | { | |
360 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
361 | const struct da9063_regulator_info *rinfo = regl->info; | |
362 | int ret, sel; | |
363 | ||
364 | sel = regulator_map_voltage_linear(rdev, uV, uV); | |
365 | if (sel < 0) | |
366 | return -EINVAL; | |
367 | ||
368 | sel <<= ffs(rdev->desc->vsel_mask) - 1; | |
369 | ||
370 | ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, | |
371 | rdev->desc->vsel_mask, sel); | |
372 | ||
373 | return ret; | |
374 | } | |
375 | ||
376 | static int da9063_suspend_enable(struct regulator_dev *rdev) | |
377 | { | |
378 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
379 | ||
380 | return regmap_field_write(regl->suspend, 1); | |
381 | } | |
382 | ||
383 | static int da9063_suspend_disable(struct regulator_dev *rdev) | |
384 | { | |
385 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
386 | ||
387 | return regmap_field_write(regl->suspend, 0); | |
388 | } | |
389 | ||
390 | static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) | |
391 | { | |
392 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
393 | int val; | |
394 | ||
395 | switch (mode) { | |
396 | case REGULATOR_MODE_FAST: | |
397 | val = BUCK_MODE_SYNC; | |
398 | break; | |
399 | case REGULATOR_MODE_NORMAL: | |
400 | val = BUCK_MODE_AUTO; | |
401 | break; | |
402 | case REGULATOR_MODE_STANDBY: | |
403 | val = BUCK_MODE_SLEEP; | |
404 | break; | |
405 | default: | |
406 | return -EINVAL; | |
407 | } | |
408 | ||
409 | return regmap_field_write(regl->mode, val); | |
410 | } | |
411 | ||
412 | static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) | |
413 | { | |
414 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); | |
415 | unsigned val; | |
416 | ||
417 | switch (mode) { | |
418 | case REGULATOR_MODE_NORMAL: | |
419 | val = 0; | |
420 | break; | |
421 | case REGULATOR_MODE_STANDBY: | |
422 | val = 1; | |
423 | break; | |
424 | default: | |
425 | return -EINVAL; | |
426 | } | |
427 | ||
428 | return regmap_field_write(regl->suspend_sleep, val); | |
429 | } | |
430 | ||
431 | static struct regulator_ops da9063_buck_ops = { | |
432 | .enable = regulator_enable_regmap, | |
433 | .disable = regulator_disable_regmap, | |
434 | .is_enabled = regulator_is_enabled_regmap, | |
435 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
436 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
437 | .list_voltage = regulator_list_voltage_linear, | |
438 | .set_current_limit = da9063_set_current_limit, | |
439 | .get_current_limit = da9063_get_current_limit, | |
440 | .set_mode = da9063_buck_set_mode, | |
441 | .get_mode = da9063_buck_get_mode, | |
442 | .get_status = da9063_buck_get_status, | |
443 | .set_suspend_voltage = da9063_set_suspend_voltage, | |
444 | .set_suspend_enable = da9063_suspend_enable, | |
445 | .set_suspend_disable = da9063_suspend_disable, | |
446 | .set_suspend_mode = da9063_buck_set_suspend_mode, | |
447 | }; | |
448 | ||
449 | static struct regulator_ops da9063_ldo_ops = { | |
450 | .enable = regulator_enable_regmap, | |
451 | .disable = regulator_disable_regmap, | |
452 | .is_enabled = regulator_is_enabled_regmap, | |
453 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
454 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
455 | .list_voltage = regulator_list_voltage_linear, | |
456 | .set_mode = da9063_ldo_set_mode, | |
457 | .get_mode = da9063_ldo_get_mode, | |
458 | .get_status = da9063_ldo_get_status, | |
459 | .set_suspend_voltage = da9063_set_suspend_voltage, | |
460 | .set_suspend_enable = da9063_suspend_enable, | |
461 | .set_suspend_disable = da9063_suspend_disable, | |
462 | .set_suspend_mode = da9063_ldo_set_suspend_mode, | |
463 | }; | |
464 | ||
465 | /* Info of regulators for DA9063 */ | |
466 | static const struct da9063_regulator_info da9063_regulator_info[] = { | |
467 | { | |
468 | DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, | |
469 | da9063_buck_a_limits), | |
470 | DA9063_BUCK_COMMON_FIELDS(BCORE1), | |
471 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), | |
472 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, | |
473 | DA9063_BCORE1_ILIM_MASK), | |
474 | }, | |
475 | { | |
476 | DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, | |
477 | da9063_buck_a_limits), | |
478 | DA9063_BUCK_COMMON_FIELDS(BCORE2), | |
479 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL), | |
480 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, | |
481 | DA9063_BCORE2_ILIM_MASK), | |
482 | }, | |
483 | { | |
484 | DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, | |
485 | da9063_buck_a_limits), | |
486 | DA9063_BUCK_COMMON_FIELDS(BPRO), | |
487 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL), | |
488 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, | |
489 | DA9063_BPRO_ILIM_MASK), | |
490 | }, | |
491 | { | |
492 | DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, | |
493 | da9063_buck_b_limits), | |
494 | DA9063_BUCK_COMMON_FIELDS(BMEM), | |
495 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), | |
496 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, | |
497 | DA9063_BMEM_ILIM_MASK), | |
498 | }, | |
499 | { | |
500 | DA9063_BUCK(DA9063, BIO, 800, 20, 3340, | |
501 | da9063_buck_b_limits), | |
502 | DA9063_BUCK_COMMON_FIELDS(BIO), | |
503 | .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL), | |
504 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, | |
505 | DA9063_BIO_ILIM_MASK), | |
506 | }, | |
507 | { | |
508 | DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, | |
509 | da9063_buck_b_limits), | |
510 | DA9063_BUCK_COMMON_FIELDS(BPERI), | |
511 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL), | |
512 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, | |
513 | DA9063_BPERI_ILIM_MASK), | |
514 | }, | |
515 | { | |
516 | DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, | |
517 | da9063_bcores_merged_limits), | |
518 | /* BCORES_MERGED uses the same register fields as BCORE1 */ | |
519 | DA9063_BUCK_COMMON_FIELDS(BCORE1), | |
520 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), | |
521 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, | |
522 | DA9063_BCORE1_ILIM_MASK), | |
523 | }, | |
524 | { | |
525 | DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, | |
526 | da9063_bmem_bio_merged_limits), | |
527 | /* BMEM_BIO_MERGED uses the same register fields as BMEM */ | |
528 | DA9063_BUCK_COMMON_FIELDS(BMEM), | |
529 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), | |
530 | .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, | |
531 | DA9063_BMEM_ILIM_MASK), | |
532 | }, | |
533 | { | |
534 | DA9063_LDO(DA9063, LDO1, 600, 20, 1860), | |
535 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL), | |
536 | }, | |
537 | { | |
538 | DA9063_LDO(DA9063, LDO2, 600, 20, 1860), | |
539 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL), | |
540 | }, | |
541 | { | |
542 | DA9063_LDO(DA9063, LDO3, 900, 20, 3440), | |
543 | .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL), | |
544 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), | |
545 | }, | |
546 | { | |
547 | DA9063_LDO(DA9063, LDO4, 900, 20, 3440), | |
548 | .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL), | |
549 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), | |
550 | }, | |
551 | { | |
552 | DA9063_LDO(DA9063, LDO5, 900, 50, 3600), | |
553 | .suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL), | |
554 | }, | |
555 | { | |
556 | DA9063_LDO(DA9063, LDO6, 900, 50, 3600), | |
557 | .suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL), | |
558 | }, | |
559 | { | |
560 | DA9063_LDO(DA9063, LDO7, 900, 50, 3600), | |
561 | .suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL), | |
562 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), | |
563 | }, | |
564 | { | |
565 | DA9063_LDO(DA9063, LDO8, 900, 50, 3600), | |
566 | .suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL), | |
567 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), | |
568 | }, | |
569 | { | |
570 | DA9063_LDO(DA9063, LDO9, 950, 50, 3600), | |
571 | .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL), | |
572 | }, | |
573 | { | |
574 | DA9063_LDO(DA9063, LDO10, 900, 50, 3600), | |
575 | .suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL), | |
576 | }, | |
577 | { | |
578 | DA9063_LDO(DA9063, LDO11, 900, 50, 3600), | |
579 | .suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL), | |
580 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), | |
581 | }, | |
582 | }; | |
583 | ||
584 | /* Link chip model with regulators info table */ | |
585 | static struct da9063_dev_model regulators_models[] = { | |
586 | { | |
587 | .regulator_info = da9063_regulator_info, | |
588 | .n_regulators = ARRAY_SIZE(da9063_regulator_info), | |
589 | .dev_model = PMIC_DA9063, | |
590 | }, | |
591 | { } | |
592 | }; | |
593 | ||
594 | /* Regulator interrupt handlers */ | |
632b3d62 | 595 | static irqreturn_t da9063_ldo_lim_event(int irq, void *data) |
69ca3e58 KG |
596 | { |
597 | struct da9063_regulators *regulators = data; | |
598 | struct da9063 *hw = regulators->regulator[0].hw; | |
599 | struct da9063_regulator *regl; | |
600 | int bits, i , ret; | |
601 | ||
602 | ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); | |
603 | if (ret < 0) | |
604 | return IRQ_NONE; | |
605 | ||
606 | for (i = regulators->n_regulators - 1; i >= 0; i--) { | |
607 | regl = ®ulators->regulator[i]; | |
608 | if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) | |
609 | continue; | |
610 | ||
611 | if (BIT(regl->info->oc_event.lsb) & bits) | |
612 | regulator_notifier_call_chain(regl->rdev, | |
613 | REGULATOR_EVENT_OVER_CURRENT, NULL); | |
614 | } | |
615 | ||
616 | return IRQ_HANDLED; | |
617 | } | |
618 | ||
619 | /* | |
620 | * Probing and Initialisation functions | |
621 | */ | |
622 | static const struct regulator_init_data *da9063_get_regulator_initdata( | |
623 | const struct da9063_regulators_pdata *regl_pdata, int id) | |
624 | { | |
625 | int i; | |
626 | ||
627 | for (i = 0; i < regl_pdata->n_regulators; i++) { | |
628 | if (id == regl_pdata->regulator_data[i].id) | |
629 | return regl_pdata->regulator_data[i].initdata; | |
630 | } | |
631 | ||
632 | return NULL; | |
633 | } | |
634 | ||
635 | #ifdef CONFIG_OF | |
636 | static struct of_regulator_match da9063_matches[] = { | |
637 | [DA9063_ID_BCORE1] = { .name = "bcore1" }, | |
638 | [DA9063_ID_BCORE2] = { .name = "bcore2" }, | |
639 | [DA9063_ID_BPRO] = { .name = "bpro", }, | |
640 | [DA9063_ID_BMEM] = { .name = "bmem", }, | |
641 | [DA9063_ID_BIO] = { .name = "bio", }, | |
642 | [DA9063_ID_BPERI] = { .name = "bperi", }, | |
643 | [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, | |
644 | [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, | |
645 | [DA9063_ID_LDO1] = { .name = "ldo1", }, | |
646 | [DA9063_ID_LDO2] = { .name = "ldo2", }, | |
647 | [DA9063_ID_LDO3] = { .name = "ldo3", }, | |
648 | [DA9063_ID_LDO4] = { .name = "ldo4", }, | |
649 | [DA9063_ID_LDO5] = { .name = "ldo5", }, | |
650 | [DA9063_ID_LDO6] = { .name = "ldo6", }, | |
651 | [DA9063_ID_LDO7] = { .name = "ldo7", }, | |
652 | [DA9063_ID_LDO8] = { .name = "ldo8", }, | |
653 | [DA9063_ID_LDO9] = { .name = "ldo9", }, | |
654 | [DA9063_ID_LDO10] = { .name = "ldo10", }, | |
655 | [DA9063_ID_LDO11] = { .name = "ldo11", }, | |
656 | }; | |
657 | ||
658 | static struct da9063_regulators_pdata *da9063_parse_regulators_dt( | |
659 | struct platform_device *pdev, | |
660 | struct of_regulator_match **da9063_reg_matches) | |
661 | { | |
662 | struct da9063_regulators_pdata *pdata; | |
663 | struct da9063_regulator_data *rdata; | |
664 | struct device_node *node; | |
665 | int i, n, num; | |
666 | ||
667 | node = of_find_node_by_name(pdev->dev.parent->of_node, "regulators"); | |
668 | if (!node) { | |
669 | dev_err(&pdev->dev, "Regulators device node not found\n"); | |
670 | return ERR_PTR(-ENODEV); | |
671 | } | |
672 | ||
673 | num = of_regulator_match(&pdev->dev, node, da9063_matches, | |
674 | ARRAY_SIZE(da9063_matches)); | |
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++; | |
701 | }; | |
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 | { | |
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); | |
720 | struct of_regulator_match *da9063_reg_matches; | |
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"); | |
757 | return -EIO; | |
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); | |
776 | if (!regulators) { | |
777 | dev_err(&pdev->dev, "No memory for regulators\n"); | |
778 | return -ENOMEM; | |
779 | } | |
780 | ||
781 | regulators->n_regulators = n_regulators; | |
782 | platform_set_drvdata(pdev, regulators); | |
783 | ||
784 | /* Register all regulators declared in platform information */ | |
785 | n = 0; | |
786 | id = 0; | |
787 | while (n < regulators->n_regulators) { | |
788 | /* Skip regulator IDs depending on merge mode configuration */ | |
789 | switch (id) { | |
790 | case DA9063_ID_BCORE1: | |
791 | case DA9063_ID_BCORE2: | |
792 | if (bcores_merged) { | |
793 | id++; | |
794 | continue; | |
795 | } | |
796 | break; | |
797 | case DA9063_ID_BMEM: | |
798 | case DA9063_ID_BIO: | |
799 | if (bmem_bio_merged) { | |
800 | id++; | |
801 | continue; | |
802 | } | |
803 | break; | |
804 | case DA9063_ID_BCORES_MERGED: | |
805 | if (!bcores_merged) { | |
806 | id++; | |
807 | continue; | |
808 | } | |
809 | break; | |
810 | case DA9063_ID_BMEM_BIO_MERGED: | |
811 | if (!bmem_bio_merged) { | |
812 | id++; | |
813 | continue; | |
814 | } | |
815 | break; | |
816 | } | |
817 | ||
818 | /* Initialise regulator structure */ | |
819 | regl = ®ulators->regulator[n]; | |
820 | regl->hw = da9063; | |
821 | regl->info = &model->regulator_info[id]; | |
822 | regl->desc = regl->info->desc; | |
823 | regl->desc.type = REGULATOR_VOLTAGE; | |
824 | regl->desc.owner = THIS_MODULE; | |
825 | ||
826 | if (regl->info->mode.reg) | |
827 | regl->mode = devm_regmap_field_alloc(&pdev->dev, | |
828 | da9063->regmap, regl->info->mode); | |
829 | if (regl->info->suspend.reg) | |
830 | regl->suspend = devm_regmap_field_alloc(&pdev->dev, | |
831 | da9063->regmap, regl->info->suspend); | |
832 | if (regl->info->sleep.reg) | |
833 | regl->sleep = devm_regmap_field_alloc(&pdev->dev, | |
834 | da9063->regmap, regl->info->sleep); | |
835 | if (regl->info->suspend_sleep.reg) | |
836 | regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, | |
837 | da9063->regmap, regl->info->suspend_sleep); | |
838 | if (regl->info->ilimit.reg) | |
839 | regl->ilimit = devm_regmap_field_alloc(&pdev->dev, | |
840 | da9063->regmap, regl->info->ilimit); | |
841 | ||
842 | /* Register regulator */ | |
843 | memset(&config, 0, sizeof(config)); | |
844 | config.dev = &pdev->dev; | |
845 | config.init_data = da9063_get_regulator_initdata(regl_pdata, id); | |
846 | config.driver_data = regl; | |
847 | if (da9063_reg_matches) | |
848 | config.of_node = da9063_reg_matches[id].of_node; | |
849 | config.regmap = da9063->regmap; | |
850 | regl->rdev = regulator_register(®l->desc, &config); | |
e515800b | 851 | if (IS_ERR(regl->rdev)) { |
69ca3e58 KG |
852 | dev_err(&pdev->dev, |
853 | "Failed to register %s regulator\n", | |
854 | regl->desc.name); | |
855 | ret = PTR_ERR(regl->rdev); | |
856 | goto err; | |
857 | } | |
858 | id++; | |
859 | n++; | |
860 | } | |
861 | ||
862 | /* LDOs overcurrent event support */ | |
863 | irq = platform_get_irq_byname(pdev, "LDO_LIM"); | |
864 | if (irq < 0) { | |
865 | ret = irq; | |
866 | dev_err(&pdev->dev, "Failed to get IRQ.\n"); | |
867 | goto err; | |
868 | } | |
869 | ||
870 | regulators->irq_ldo_lim = regmap_irq_get_virq(da9063->regmap_irq, irq); | |
871 | if (regulators->irq_ldo_lim >= 0) { | |
872 | ret = request_threaded_irq(regulators->irq_ldo_lim, | |
873 | NULL, da9063_ldo_lim_event, | |
874 | IRQF_TRIGGER_LOW | IRQF_ONESHOT, | |
875 | "LDO_LIM", regulators); | |
876 | if (ret) { | |
877 | dev_err(&pdev->dev, | |
878 | "Failed to request LDO_LIM IRQ.\n"); | |
879 | regulators->irq_ldo_lim = -ENXIO; | |
880 | } | |
881 | } | |
882 | ||
883 | return 0; | |
884 | ||
885 | err: | |
886 | /* Wind back regulators registeration */ | |
887 | while (--n >= 0) | |
888 | regulator_unregister(regulators->regulator[n].rdev); | |
889 | ||
890 | return ret; | |
891 | } | |
892 | ||
893 | static int da9063_regulator_remove(struct platform_device *pdev) | |
894 | { | |
895 | struct da9063_regulators *regulators = platform_get_drvdata(pdev); | |
896 | struct da9063_regulator *regl; | |
897 | ||
898 | free_irq(regulators->irq_ldo_lim, regulators); | |
899 | free_irq(regulators->irq_uvov, regulators); | |
900 | ||
901 | for (regl = ®ulators->regulator[regulators->n_regulators - 1]; | |
902 | regl >= ®ulators->regulator[0]; regl--) | |
903 | regulator_unregister(regl->rdev); | |
904 | ||
905 | return 0; | |
906 | } | |
907 | ||
908 | static struct platform_driver da9063_regulator_driver = { | |
909 | .driver = { | |
910 | .name = DA9063_DRVNAME_REGULATORS, | |
911 | .owner = THIS_MODULE, | |
912 | }, | |
913 | .probe = da9063_regulator_probe, | |
914 | .remove = da9063_regulator_remove, | |
915 | }; | |
916 | ||
917 | static int __init da9063_regulator_init(void) | |
918 | { | |
919 | return platform_driver_register(&da9063_regulator_driver); | |
920 | } | |
921 | subsys_initcall(da9063_regulator_init); | |
922 | ||
923 | static void __exit da9063_regulator_cleanup(void) | |
924 | { | |
925 | platform_driver_unregister(&da9063_regulator_driver); | |
926 | } | |
927 | module_exit(da9063_regulator_cleanup); | |
928 | ||
929 | ||
930 | /* Module information */ | |
931 | MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); | |
932 | MODULE_DESCRIPTION("DA9063 regulators driver"); | |
933 | MODULE_LICENSE("GPL"); | |
934 | MODULE_ALIAS("paltform:" DA9063_DRVNAME_REGULATORS); |