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4068e518 T |
1 | /* |
2 | * da9062-regulator.c - REGULATOR device driver for DA9062 | |
3 | * Copyright (C) 2015 Dialog Semiconductor Ltd. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License | |
7 | * as published by the Free Software Foundation; either version 2 | |
8 | * of the License, or (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
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/da9062/core.h> | |
27 | #include <linux/mfd/da9062/registers.h> | |
28 | ||
29 | /* Regulator IDs */ | |
30 | enum { | |
31 | DA9062_ID_BUCK1, | |
32 | DA9062_ID_BUCK2, | |
33 | DA9062_ID_BUCK3, | |
34 | DA9062_ID_BUCK4, | |
35 | DA9062_ID_LDO1, | |
36 | DA9062_ID_LDO2, | |
37 | DA9062_ID_LDO3, | |
38 | DA9062_ID_LDO4, | |
39 | DA9062_MAX_REGULATORS, | |
40 | }; | |
41 | ||
42 | /* Regulator capabilities and registers description */ | |
43 | struct da9062_regulator_info { | |
44 | struct regulator_desc desc; | |
45 | /* Current limiting */ | |
46 | unsigned int n_current_limits; | |
47 | const int *current_limits; | |
48 | /* Main register fields */ | |
49 | struct reg_field mode; | |
50 | struct reg_field suspend; | |
51 | struct reg_field sleep; | |
52 | struct reg_field suspend_sleep; | |
53 | unsigned int suspend_vsel_reg; | |
54 | struct reg_field ilimit; | |
55 | /* Event detection bit */ | |
56 | struct reg_field oc_event; | |
57 | }; | |
58 | ||
59 | /* Single regulator settings */ | |
60 | struct da9062_regulator { | |
61 | struct regulator_desc desc; | |
62 | struct regulator_dev *rdev; | |
63 | struct da9062 *hw; | |
64 | const struct da9062_regulator_info *info; | |
65 | ||
66 | struct regmap_field *mode; | |
67 | struct regmap_field *suspend; | |
68 | struct regmap_field *sleep; | |
69 | struct regmap_field *suspend_sleep; | |
70 | struct regmap_field *ilimit; | |
71 | }; | |
72 | ||
73 | /* Encapsulates all information for the regulators driver */ | |
74 | struct da9062_regulators { | |
75 | int irq_ldo_lim; | |
76 | unsigned n_regulators; | |
77 | /* Array size to be defined during init. Keep at end. */ | |
78 | struct da9062_regulator regulator[0]; | |
79 | }; | |
80 | ||
81 | /* BUCK modes */ | |
82 | enum { | |
83 | BUCK_MODE_MANUAL, /* 0 */ | |
84 | BUCK_MODE_SLEEP, /* 1 */ | |
85 | BUCK_MODE_SYNC, /* 2 */ | |
86 | BUCK_MODE_AUTO /* 3 */ | |
87 | }; | |
88 | ||
89 | /* Regulator operations */ | |
90 | ||
91 | /* Current limits array (in uA) BUCK1 and BUCK3. | |
92 | Entry indexes corresponds to register values. */ | |
93 | static const int da9062_buck_a_limits[] = { | |
94 | 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, | |
95 | 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 | |
96 | }; | |
97 | ||
98 | /* Current limits array (in uA) for BUCK2. | |
99 | Entry indexes corresponds to register values. */ | |
100 | static const int da9062_buck_b_limits[] = { | |
101 | 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, | |
102 | 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 | |
103 | }; | |
104 | ||
105 | static int da9062_set_current_limit(struct regulator_dev *rdev, | |
106 | int min_ua, int max_ua) | |
107 | { | |
108 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
109 | const struct da9062_regulator_info *rinfo = regl->info; | |
110 | int n, tval; | |
111 | ||
112 | for (n = 0; n < rinfo->n_current_limits; n++) { | |
113 | tval = rinfo->current_limits[n]; | |
114 | if (tval >= min_ua && tval <= max_ua) | |
115 | return regmap_field_write(regl->ilimit, n); | |
116 | } | |
117 | ||
118 | return -EINVAL; | |
119 | } | |
120 | ||
121 | static int da9062_get_current_limit(struct regulator_dev *rdev) | |
122 | { | |
123 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
124 | const struct da9062_regulator_info *rinfo = regl->info; | |
125 | unsigned int sel; | |
126 | int ret; | |
127 | ||
128 | ret = regmap_field_read(regl->ilimit, &sel); | |
129 | if (ret < 0) | |
130 | return ret; | |
131 | ||
132 | if (sel >= rinfo->n_current_limits) | |
133 | sel = rinfo->n_current_limits - 1; | |
134 | ||
135 | return rinfo->current_limits[sel]; | |
136 | } | |
137 | ||
138 | static int da9062_buck_set_mode(struct regulator_dev *rdev, unsigned mode) | |
139 | { | |
140 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
141 | unsigned val; | |
142 | ||
143 | switch (mode) { | |
144 | case REGULATOR_MODE_FAST: | |
145 | val = BUCK_MODE_SYNC; | |
146 | break; | |
147 | case REGULATOR_MODE_NORMAL: | |
148 | val = BUCK_MODE_AUTO; | |
149 | break; | |
150 | case REGULATOR_MODE_STANDBY: | |
151 | val = BUCK_MODE_SLEEP; | |
152 | break; | |
153 | default: | |
154 | return -EINVAL; | |
155 | } | |
156 | ||
157 | return regmap_field_write(regl->mode, val); | |
158 | } | |
159 | ||
160 | /* | |
161 | * Bucks use single mode register field for normal operation | |
162 | * and suspend state. | |
163 | * There are 3 modes to map to: FAST, NORMAL, and STANDBY. | |
164 | */ | |
165 | ||
166 | static unsigned da9062_buck_get_mode(struct regulator_dev *rdev) | |
167 | { | |
168 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
169 | struct regmap_field *field; | |
170 | unsigned int val, mode = 0; | |
171 | int ret; | |
172 | ||
173 | ret = regmap_field_read(regl->mode, &val); | |
174 | if (ret < 0) | |
175 | return ret; | |
176 | ||
177 | switch (val) { | |
178 | default: | |
179 | case BUCK_MODE_MANUAL: | |
180 | mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY; | |
181 | /* Sleep flag bit decides the mode */ | |
182 | break; | |
183 | case BUCK_MODE_SLEEP: | |
184 | return REGULATOR_MODE_STANDBY; | |
185 | case BUCK_MODE_SYNC: | |
186 | return REGULATOR_MODE_FAST; | |
187 | case BUCK_MODE_AUTO: | |
188 | return REGULATOR_MODE_NORMAL; | |
189 | } | |
190 | ||
191 | /* Detect current regulator state */ | |
192 | ret = regmap_field_read(regl->suspend, &val); | |
193 | if (ret < 0) | |
194 | return 0; | |
195 | ||
196 | /* Read regulator mode from proper register, depending on state */ | |
197 | if (val) | |
198 | field = regl->suspend_sleep; | |
199 | else | |
200 | field = regl->sleep; | |
201 | ||
202 | ret = regmap_field_read(field, &val); | |
203 | if (ret < 0) | |
204 | return 0; | |
205 | ||
206 | if (val) | |
207 | mode &= REGULATOR_MODE_STANDBY; | |
208 | else | |
209 | mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST; | |
210 | ||
211 | return mode; | |
212 | } | |
213 | ||
214 | /* | |
215 | * LDOs use sleep flags - one for normal and one for suspend state. | |
216 | * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. | |
217 | */ | |
218 | ||
219 | static int da9062_ldo_set_mode(struct regulator_dev *rdev, unsigned mode) | |
220 | { | |
221 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
222 | unsigned val; | |
223 | ||
224 | switch (mode) { | |
225 | case REGULATOR_MODE_NORMAL: | |
226 | val = 0; | |
227 | break; | |
228 | case REGULATOR_MODE_STANDBY: | |
229 | val = 1; | |
230 | break; | |
231 | default: | |
232 | return -EINVAL; | |
233 | } | |
234 | ||
235 | return regmap_field_write(regl->sleep, val); | |
236 | } | |
237 | ||
238 | static unsigned da9062_ldo_get_mode(struct regulator_dev *rdev) | |
239 | { | |
240 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
241 | struct regmap_field *field; | |
242 | int ret, val; | |
243 | ||
244 | /* Detect current regulator state */ | |
245 | ret = regmap_field_read(regl->suspend, &val); | |
246 | if (ret < 0) | |
247 | return 0; | |
248 | ||
249 | /* Read regulator mode from proper register, depending on state */ | |
250 | if (val) | |
251 | field = regl->suspend_sleep; | |
252 | else | |
253 | field = regl->sleep; | |
254 | ||
255 | ret = regmap_field_read(field, &val); | |
256 | if (ret < 0) | |
257 | return 0; | |
258 | ||
259 | if (val) | |
260 | return REGULATOR_MODE_STANDBY; | |
261 | else | |
262 | return REGULATOR_MODE_NORMAL; | |
263 | } | |
264 | ||
265 | static int da9062_buck_get_status(struct regulator_dev *rdev) | |
266 | { | |
267 | int ret = regulator_is_enabled_regmap(rdev); | |
268 | ||
269 | if (ret == 0) { | |
270 | ret = REGULATOR_STATUS_OFF; | |
271 | } else if (ret > 0) { | |
272 | ret = da9062_buck_get_mode(rdev); | |
273 | if (ret > 0) | |
274 | ret = regulator_mode_to_status(ret); | |
275 | else if (ret == 0) | |
276 | ret = -EIO; | |
277 | } | |
278 | ||
279 | return ret; | |
280 | } | |
281 | ||
282 | static int da9062_ldo_get_status(struct regulator_dev *rdev) | |
283 | { | |
284 | int ret = regulator_is_enabled_regmap(rdev); | |
285 | ||
286 | if (ret == 0) { | |
287 | ret = REGULATOR_STATUS_OFF; | |
288 | } else if (ret > 0) { | |
289 | ret = da9062_ldo_get_mode(rdev); | |
290 | if (ret > 0) | |
291 | ret = regulator_mode_to_status(ret); | |
292 | else if (ret == 0) | |
293 | ret = -EIO; | |
294 | } | |
295 | ||
296 | return ret; | |
297 | } | |
298 | ||
299 | static int da9062_set_suspend_voltage(struct regulator_dev *rdev, int uv) | |
300 | { | |
301 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
302 | const struct da9062_regulator_info *rinfo = regl->info; | |
303 | int ret, sel; | |
304 | ||
305 | sel = regulator_map_voltage_linear(rdev, uv, uv); | |
306 | if (sel < 0) | |
307 | return sel; | |
308 | ||
309 | sel <<= ffs(rdev->desc->vsel_mask) - 1; | |
310 | ||
311 | ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, | |
312 | rdev->desc->vsel_mask, sel); | |
313 | ||
314 | return ret; | |
315 | } | |
316 | ||
317 | static int da9062_suspend_enable(struct regulator_dev *rdev) | |
318 | { | |
319 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
320 | ||
321 | return regmap_field_write(regl->suspend, 1); | |
322 | } | |
323 | ||
324 | static int da9062_suspend_disable(struct regulator_dev *rdev) | |
325 | { | |
326 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
327 | ||
328 | return regmap_field_write(regl->suspend, 0); | |
329 | } | |
330 | ||
331 | static int da9062_buck_set_suspend_mode(struct regulator_dev *rdev, | |
332 | unsigned mode) | |
333 | { | |
334 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
335 | int val; | |
336 | ||
337 | switch (mode) { | |
338 | case REGULATOR_MODE_FAST: | |
339 | val = BUCK_MODE_SYNC; | |
340 | break; | |
341 | case REGULATOR_MODE_NORMAL: | |
342 | val = BUCK_MODE_AUTO; | |
343 | break; | |
344 | case REGULATOR_MODE_STANDBY: | |
345 | val = BUCK_MODE_SLEEP; | |
346 | break; | |
347 | default: | |
348 | return -EINVAL; | |
349 | } | |
350 | ||
351 | return regmap_field_write(regl->mode, val); | |
352 | } | |
353 | ||
354 | static int da9062_ldo_set_suspend_mode(struct regulator_dev *rdev, | |
355 | unsigned mode) | |
356 | { | |
357 | struct da9062_regulator *regl = rdev_get_drvdata(rdev); | |
358 | unsigned val; | |
359 | ||
360 | switch (mode) { | |
361 | case REGULATOR_MODE_NORMAL: | |
362 | val = 0; | |
363 | break; | |
364 | case REGULATOR_MODE_STANDBY: | |
365 | val = 1; | |
366 | break; | |
367 | default: | |
368 | return -EINVAL; | |
369 | } | |
370 | ||
371 | return regmap_field_write(regl->suspend_sleep, val); | |
372 | } | |
373 | ||
374 | static struct regulator_ops da9062_buck_ops = { | |
375 | .enable = regulator_enable_regmap, | |
376 | .disable = regulator_disable_regmap, | |
377 | .is_enabled = regulator_is_enabled_regmap, | |
378 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
379 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
380 | .list_voltage = regulator_list_voltage_linear, | |
381 | .set_current_limit = da9062_set_current_limit, | |
382 | .get_current_limit = da9062_get_current_limit, | |
383 | .set_mode = da9062_buck_set_mode, | |
384 | .get_mode = da9062_buck_get_mode, | |
385 | .get_status = da9062_buck_get_status, | |
386 | .set_suspend_voltage = da9062_set_suspend_voltage, | |
387 | .set_suspend_enable = da9062_suspend_enable, | |
388 | .set_suspend_disable = da9062_suspend_disable, | |
389 | .set_suspend_mode = da9062_buck_set_suspend_mode, | |
390 | }; | |
391 | ||
392 | static struct regulator_ops da9062_ldo_ops = { | |
393 | .enable = regulator_enable_regmap, | |
394 | .disable = regulator_disable_regmap, | |
395 | .is_enabled = regulator_is_enabled_regmap, | |
396 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
397 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
398 | .list_voltage = regulator_list_voltage_linear, | |
399 | .set_mode = da9062_ldo_set_mode, | |
400 | .get_mode = da9062_ldo_get_mode, | |
401 | .get_status = da9062_ldo_get_status, | |
402 | .set_suspend_voltage = da9062_set_suspend_voltage, | |
403 | .set_suspend_enable = da9062_suspend_enable, | |
404 | .set_suspend_disable = da9062_suspend_disable, | |
405 | .set_suspend_mode = da9062_ldo_set_suspend_mode, | |
406 | }; | |
407 | ||
408 | /* Regulator information */ | |
409 | static const struct da9062_regulator_info local_regulator_info[] = { | |
410 | { | |
411 | .desc.id = DA9062_ID_BUCK1, | |
412 | .desc.name = "DA9062 BUCK1", | |
413 | .desc.of_match = of_match_ptr("buck1"), | |
414 | .desc.regulators_node = of_match_ptr("regulators"), | |
415 | .desc.ops = &da9062_buck_ops, | |
416 | .desc.min_uV = (300) * 1000, | |
417 | .desc.uV_step = (10) * 1000, | |
418 | .desc.n_voltages = ((1570) - (300))/(10) + 1, | |
419 | .current_limits = da9062_buck_a_limits, | |
420 | .n_current_limits = ARRAY_SIZE(da9062_buck_a_limits), | |
421 | .desc.enable_reg = DA9062AA_BUCK1_CONT, | |
422 | .desc.enable_mask = DA9062AA_BUCK1_EN_MASK, | |
423 | .desc.vsel_reg = DA9062AA_VBUCK1_A, | |
424 | .desc.vsel_mask = DA9062AA_VBUCK1_A_MASK, | |
425 | .desc.linear_min_sel = 0, | |
426 | .sleep = REG_FIELD(DA9062AA_VBUCK1_A, | |
427 | __builtin_ffs((int)DA9062AA_BUCK1_SL_A_MASK) - 1, | |
428 | sizeof(unsigned int) * 8 - | |
429 | __builtin_clz((DA9062AA_BUCK1_SL_A_MASK)) - 1), | |
430 | .suspend_sleep = REG_FIELD(DA9062AA_VBUCK1_B, | |
431 | __builtin_ffs((int)DA9062AA_BUCK1_SL_B_MASK) - 1, | |
432 | sizeof(unsigned int) * 8 - | |
433 | __builtin_clz((DA9062AA_BUCK1_SL_B_MASK)) - 1), | |
434 | .suspend_vsel_reg = DA9062AA_VBUCK1_B, | |
435 | .mode = REG_FIELD(DA9062AA_BUCK1_CFG, | |
436 | __builtin_ffs((int)DA9062AA_BUCK1_MODE_MASK) - 1, | |
437 | sizeof(unsigned int) * 8 - | |
438 | __builtin_clz((DA9062AA_BUCK1_MODE_MASK)) - 1), | |
439 | .suspend = REG_FIELD(DA9062AA_DVC_1, | |
440 | __builtin_ffs((int)DA9062AA_VBUCK1_SEL_MASK) - 1, | |
441 | sizeof(unsigned int) * 8 - | |
442 | __builtin_clz((DA9062AA_VBUCK1_SEL_MASK)) - 1), | |
443 | .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_C, | |
444 | __builtin_ffs((int)DA9062AA_BUCK1_ILIM_MASK) - 1, | |
445 | sizeof(unsigned int) * 8 - | |
446 | __builtin_clz((DA9062AA_BUCK1_ILIM_MASK)) - 1), | |
447 | }, | |
448 | { | |
449 | .desc.id = DA9062_ID_BUCK2, | |
450 | .desc.name = "DA9062 BUCK2", | |
451 | .desc.of_match = of_match_ptr("buck2"), | |
452 | .desc.regulators_node = of_match_ptr("regulators"), | |
453 | .desc.ops = &da9062_buck_ops, | |
454 | .desc.min_uV = (300) * 1000, | |
455 | .desc.uV_step = (10) * 1000, | |
456 | .desc.n_voltages = ((1570) - (300))/(10) + 1, | |
457 | .current_limits = da9062_buck_a_limits, | |
458 | .n_current_limits = ARRAY_SIZE(da9062_buck_a_limits), | |
459 | .desc.enable_reg = DA9062AA_BUCK2_CONT, | |
460 | .desc.enable_mask = DA9062AA_BUCK2_EN_MASK, | |
461 | .desc.vsel_reg = DA9062AA_VBUCK2_A, | |
462 | .desc.vsel_mask = DA9062AA_VBUCK2_A_MASK, | |
463 | .desc.linear_min_sel = 0, | |
464 | .sleep = REG_FIELD(DA9062AA_VBUCK2_A, | |
465 | __builtin_ffs((int)DA9062AA_BUCK2_SL_A_MASK) - 1, | |
466 | sizeof(unsigned int) * 8 - | |
467 | __builtin_clz((DA9062AA_BUCK2_SL_A_MASK)) - 1), | |
468 | .suspend_sleep = REG_FIELD(DA9062AA_VBUCK2_B, | |
469 | __builtin_ffs((int)DA9062AA_BUCK2_SL_B_MASK) - 1, | |
470 | sizeof(unsigned int) * 8 - | |
471 | __builtin_clz((DA9062AA_BUCK2_SL_B_MASK)) - 1), | |
472 | .suspend_vsel_reg = DA9062AA_VBUCK2_B, | |
473 | .mode = REG_FIELD(DA9062AA_BUCK2_CFG, | |
474 | __builtin_ffs((int)DA9062AA_BUCK2_MODE_MASK) - 1, | |
475 | sizeof(unsigned int) * 8 - | |
476 | __builtin_clz((DA9062AA_BUCK2_MODE_MASK)) - 1), | |
477 | .suspend = REG_FIELD(DA9062AA_DVC_1, | |
478 | __builtin_ffs((int)DA9062AA_VBUCK2_SEL_MASK) - 1, | |
479 | sizeof(unsigned int) * 8 - | |
480 | __builtin_clz((DA9062AA_VBUCK2_SEL_MASK)) - 1), | |
481 | .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_C, | |
482 | __builtin_ffs((int)DA9062AA_BUCK2_ILIM_MASK) - 1, | |
483 | sizeof(unsigned int) * 8 - | |
484 | __builtin_clz((DA9062AA_BUCK2_ILIM_MASK)) - 1), | |
485 | }, | |
486 | { | |
487 | .desc.id = DA9062_ID_BUCK3, | |
488 | .desc.name = "DA9062 BUCK3", | |
489 | .desc.of_match = of_match_ptr("buck3"), | |
490 | .desc.regulators_node = of_match_ptr("regulators"), | |
491 | .desc.ops = &da9062_buck_ops, | |
492 | .desc.min_uV = (800) * 1000, | |
493 | .desc.uV_step = (20) * 1000, | |
494 | .desc.n_voltages = ((3340) - (800))/(20) + 1, | |
495 | .current_limits = da9062_buck_b_limits, | |
496 | .n_current_limits = ARRAY_SIZE(da9062_buck_b_limits), | |
497 | .desc.enable_reg = DA9062AA_BUCK3_CONT, | |
498 | .desc.enable_mask = DA9062AA_BUCK3_EN_MASK, | |
499 | .desc.vsel_reg = DA9062AA_VBUCK3_A, | |
500 | .desc.vsel_mask = DA9062AA_VBUCK3_A_MASK, | |
501 | .desc.linear_min_sel = 0, | |
502 | .sleep = REG_FIELD(DA9062AA_VBUCK3_A, | |
503 | __builtin_ffs((int)DA9062AA_BUCK3_SL_A_MASK) - 1, | |
504 | sizeof(unsigned int) * 8 - | |
505 | __builtin_clz((DA9062AA_BUCK3_SL_A_MASK)) - 1), | |
506 | .suspend_sleep = REG_FIELD(DA9062AA_VBUCK3_B, | |
507 | __builtin_ffs((int)DA9062AA_BUCK3_SL_B_MASK) - 1, | |
508 | sizeof(unsigned int) * 8 - | |
509 | __builtin_clz((DA9062AA_BUCK3_SL_B_MASK)) - 1), | |
510 | .suspend_vsel_reg = DA9062AA_VBUCK3_B, | |
511 | .mode = REG_FIELD(DA9062AA_BUCK3_CFG, | |
512 | __builtin_ffs((int)DA9062AA_BUCK3_MODE_MASK) - 1, | |
513 | sizeof(unsigned int) * 8 - | |
514 | __builtin_clz((DA9062AA_BUCK3_MODE_MASK)) - 1), | |
515 | .suspend = REG_FIELD(DA9062AA_DVC_1, | |
516 | __builtin_ffs((int)DA9062AA_VBUCK3_SEL_MASK) - 1, | |
517 | sizeof(unsigned int) * 8 - | |
518 | __builtin_clz((DA9062AA_VBUCK3_SEL_MASK)) - 1), | |
519 | .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_A, | |
520 | __builtin_ffs((int)DA9062AA_BUCK3_ILIM_MASK) - 1, | |
521 | sizeof(unsigned int) * 8 - | |
522 | __builtin_clz((DA9062AA_BUCK3_ILIM_MASK)) - 1), | |
523 | }, | |
524 | { | |
525 | .desc.id = DA9062_ID_BUCK4, | |
526 | .desc.name = "DA9062 BUCK4", | |
527 | .desc.of_match = of_match_ptr("buck4"), | |
528 | .desc.regulators_node = of_match_ptr("regulators"), | |
529 | .desc.ops = &da9062_buck_ops, | |
530 | .desc.min_uV = (530) * 1000, | |
531 | .desc.uV_step = (10) * 1000, | |
532 | .desc.n_voltages = ((1800) - (530))/(10) + 1, | |
533 | .current_limits = da9062_buck_a_limits, | |
534 | .n_current_limits = ARRAY_SIZE(da9062_buck_a_limits), | |
535 | .desc.enable_reg = DA9062AA_BUCK4_CONT, | |
536 | .desc.enable_mask = DA9062AA_BUCK4_EN_MASK, | |
537 | .desc.vsel_reg = DA9062AA_VBUCK4_A, | |
538 | .desc.vsel_mask = DA9062AA_VBUCK4_A_MASK, | |
539 | .desc.linear_min_sel = 0, | |
540 | .sleep = REG_FIELD(DA9062AA_VBUCK4_A, | |
541 | __builtin_ffs((int)DA9062AA_BUCK4_SL_A_MASK) - 1, | |
542 | sizeof(unsigned int) * 8 - | |
543 | __builtin_clz((DA9062AA_BUCK4_SL_A_MASK)) - 1), | |
544 | .suspend_sleep = REG_FIELD(DA9062AA_VBUCK4_B, | |
545 | __builtin_ffs((int)DA9062AA_BUCK4_SL_B_MASK) - 1, | |
546 | sizeof(unsigned int) * 8 - | |
547 | __builtin_clz((DA9062AA_BUCK4_SL_B_MASK)) - 1), | |
548 | .suspend_vsel_reg = DA9062AA_VBUCK4_B, | |
549 | .mode = REG_FIELD(DA9062AA_BUCK4_CFG, | |
550 | __builtin_ffs((int)DA9062AA_BUCK4_MODE_MASK) - 1, | |
551 | sizeof(unsigned int) * 8 - | |
552 | __builtin_clz((DA9062AA_BUCK4_MODE_MASK)) - 1), | |
553 | .suspend = REG_FIELD(DA9062AA_DVC_1, | |
554 | __builtin_ffs((int)DA9062AA_VBUCK4_SEL_MASK) - 1, | |
555 | sizeof(unsigned int) * 8 - | |
556 | __builtin_clz((DA9062AA_VBUCK4_SEL_MASK)) - 1), | |
557 | .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_B, | |
558 | __builtin_ffs((int)DA9062AA_BUCK4_ILIM_MASK) - 1, | |
559 | sizeof(unsigned int) * 8 - | |
560 | __builtin_clz((DA9062AA_BUCK4_ILIM_MASK)) - 1), | |
561 | }, | |
562 | { | |
563 | .desc.id = DA9062_ID_LDO1, | |
564 | .desc.name = "DA9062 LDO1", | |
565 | .desc.of_match = of_match_ptr("ldo1"), | |
566 | .desc.regulators_node = of_match_ptr("regulators"), | |
567 | .desc.ops = &da9062_ldo_ops, | |
568 | .desc.min_uV = (900) * 1000, | |
569 | .desc.uV_step = (50) * 1000, | |
570 | .desc.n_voltages = ((3600) - (900))/(50) + 1, | |
571 | .desc.enable_reg = DA9062AA_LDO1_CONT, | |
572 | .desc.enable_mask = DA9062AA_LDO1_EN_MASK, | |
573 | .desc.vsel_reg = DA9062AA_VLDO1_A, | |
574 | .desc.vsel_mask = DA9062AA_VLDO1_A_MASK, | |
575 | .desc.linear_min_sel = 0, | |
576 | .sleep = REG_FIELD(DA9062AA_VLDO1_A, | |
577 | __builtin_ffs((int)DA9062AA_LDO1_SL_A_MASK) - 1, | |
578 | sizeof(unsigned int) * 8 - | |
579 | __builtin_clz((DA9062AA_LDO1_SL_A_MASK)) - 1), | |
580 | .suspend_sleep = REG_FIELD(DA9062AA_VLDO1_B, | |
581 | __builtin_ffs((int)DA9062AA_LDO1_SL_B_MASK) - 1, | |
582 | sizeof(unsigned int) * 8 - | |
583 | __builtin_clz((DA9062AA_LDO1_SL_B_MASK)) - 1), | |
584 | .suspend_vsel_reg = DA9062AA_VLDO1_B, | |
585 | .suspend = REG_FIELD(DA9062AA_DVC_1, | |
586 | __builtin_ffs((int)DA9062AA_VLDO1_SEL_MASK) - 1, | |
587 | sizeof(unsigned int) * 8 - | |
588 | __builtin_clz((DA9062AA_VLDO1_SEL_MASK)) - 1), | |
589 | .oc_event = REG_FIELD(DA9062AA_STATUS_D, | |
590 | __builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1, | |
591 | sizeof(unsigned int) * 8 - | |
592 | __builtin_clz((DA9062AA_LDO1_ILIM_MASK)) - 1), | |
593 | }, | |
594 | { | |
595 | .desc.id = DA9062_ID_LDO2, | |
596 | .desc.name = "DA9062 LDO2", | |
597 | .desc.of_match = of_match_ptr("ldo2"), | |
598 | .desc.regulators_node = of_match_ptr("regulators"), | |
599 | .desc.ops = &da9062_ldo_ops, | |
600 | .desc.min_uV = (900) * 1000, | |
601 | .desc.uV_step = (50) * 1000, | |
602 | .desc.n_voltages = ((3600) - (600))/(50) + 1, | |
603 | .desc.enable_reg = DA9062AA_LDO2_CONT, | |
604 | .desc.enable_mask = DA9062AA_LDO2_EN_MASK, | |
605 | .desc.vsel_reg = DA9062AA_VLDO2_A, | |
606 | .desc.vsel_mask = DA9062AA_VLDO2_A_MASK, | |
607 | .desc.linear_min_sel = 0, | |
608 | .sleep = REG_FIELD(DA9062AA_VLDO2_A, | |
609 | __builtin_ffs((int)DA9062AA_LDO2_SL_A_MASK) - 1, | |
610 | sizeof(unsigned int) * 8 - | |
611 | __builtin_clz((DA9062AA_LDO2_SL_A_MASK)) - 1), | |
612 | .suspend_sleep = REG_FIELD(DA9062AA_VLDO2_B, | |
613 | __builtin_ffs((int)DA9062AA_LDO2_SL_B_MASK) - 1, | |
614 | sizeof(unsigned int) * 8 - | |
615 | __builtin_clz((DA9062AA_LDO2_SL_B_MASK)) - 1), | |
616 | .suspend_vsel_reg = DA9062AA_VLDO2_B, | |
617 | .suspend = REG_FIELD(DA9062AA_DVC_1, | |
618 | __builtin_ffs((int)DA9062AA_VLDO2_SEL_MASK) - 1, | |
619 | sizeof(unsigned int) * 8 - | |
620 | __builtin_clz((DA9062AA_VLDO2_SEL_MASK)) - 1), | |
621 | .oc_event = REG_FIELD(DA9062AA_STATUS_D, | |
622 | __builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1, | |
623 | sizeof(unsigned int) * 8 - | |
624 | __builtin_clz((DA9062AA_LDO2_ILIM_MASK)) - 1), | |
625 | }, | |
626 | { | |
627 | .desc.id = DA9062_ID_LDO3, | |
628 | .desc.name = "DA9062 LDO3", | |
629 | .desc.of_match = of_match_ptr("ldo3"), | |
630 | .desc.regulators_node = of_match_ptr("regulators"), | |
631 | .desc.ops = &da9062_ldo_ops, | |
632 | .desc.min_uV = (900) * 1000, | |
633 | .desc.uV_step = (50) * 1000, | |
634 | .desc.n_voltages = ((3600) - (900))/(50) + 1, | |
635 | .desc.enable_reg = DA9062AA_LDO3_CONT, | |
636 | .desc.enable_mask = DA9062AA_LDO3_EN_MASK, | |
637 | .desc.vsel_reg = DA9062AA_VLDO3_A, | |
638 | .desc.vsel_mask = DA9062AA_VLDO3_A_MASK, | |
639 | .desc.linear_min_sel = 0, | |
640 | .sleep = REG_FIELD(DA9062AA_VLDO3_A, | |
641 | __builtin_ffs((int)DA9062AA_LDO3_SL_A_MASK) - 1, | |
642 | sizeof(unsigned int) * 8 - | |
643 | __builtin_clz((DA9062AA_LDO3_SL_A_MASK)) - 1), | |
644 | .suspend_sleep = REG_FIELD(DA9062AA_VLDO3_B, | |
645 | __builtin_ffs((int)DA9062AA_LDO3_SL_B_MASK) - 1, | |
646 | sizeof(unsigned int) * 8 - | |
647 | __builtin_clz((DA9062AA_LDO3_SL_B_MASK)) - 1), | |
648 | .suspend_vsel_reg = DA9062AA_VLDO3_B, | |
649 | .suspend = REG_FIELD(DA9062AA_DVC_1, | |
650 | __builtin_ffs((int)DA9062AA_VLDO3_SEL_MASK) - 1, | |
651 | sizeof(unsigned int) * 8 - | |
652 | __builtin_clz((DA9062AA_VLDO3_SEL_MASK)) - 1), | |
653 | .oc_event = REG_FIELD(DA9062AA_STATUS_D, | |
654 | __builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1, | |
655 | sizeof(unsigned int) * 8 - | |
656 | __builtin_clz((DA9062AA_LDO3_ILIM_MASK)) - 1), | |
657 | }, | |
658 | { | |
659 | .desc.id = DA9062_ID_LDO4, | |
660 | .desc.name = "DA9062 LDO4", | |
661 | .desc.of_match = of_match_ptr("ldo4"), | |
662 | .desc.regulators_node = of_match_ptr("regulators"), | |
663 | .desc.ops = &da9062_ldo_ops, | |
664 | .desc.min_uV = (900) * 1000, | |
665 | .desc.uV_step = (50) * 1000, | |
666 | .desc.n_voltages = ((3600) - (900))/(50) + 1, | |
667 | .desc.enable_reg = DA9062AA_LDO4_CONT, | |
668 | .desc.enable_mask = DA9062AA_LDO4_EN_MASK, | |
669 | .desc.vsel_reg = DA9062AA_VLDO4_A, | |
670 | .desc.vsel_mask = DA9062AA_VLDO4_A_MASK, | |
671 | .desc.linear_min_sel = 0, | |
672 | .sleep = REG_FIELD(DA9062AA_VLDO4_A, | |
673 | __builtin_ffs((int)DA9062AA_LDO4_SL_A_MASK) - 1, | |
674 | sizeof(unsigned int) * 8 - | |
675 | __builtin_clz((DA9062AA_LDO4_SL_A_MASK)) - 1), | |
676 | .suspend_sleep = REG_FIELD(DA9062AA_VLDO4_B, | |
677 | __builtin_ffs((int)DA9062AA_LDO4_SL_B_MASK) - 1, | |
678 | sizeof(unsigned int) * 8 - | |
679 | __builtin_clz((DA9062AA_LDO4_SL_B_MASK)) - 1), | |
680 | .suspend_vsel_reg = DA9062AA_VLDO4_B, | |
681 | .suspend = REG_FIELD(DA9062AA_DVC_1, | |
682 | __builtin_ffs((int)DA9062AA_VLDO4_SEL_MASK) - 1, | |
683 | sizeof(unsigned int) * 8 - | |
684 | __builtin_clz((DA9062AA_VLDO4_SEL_MASK)) - 1), | |
685 | .oc_event = REG_FIELD(DA9062AA_STATUS_D, | |
686 | __builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1, | |
687 | sizeof(unsigned int) * 8 - | |
688 | __builtin_clz((DA9062AA_LDO4_ILIM_MASK)) - 1), | |
689 | }, | |
690 | }; | |
691 | ||
692 | /* Regulator interrupt handlers */ | |
693 | static irqreturn_t da9062_ldo_lim_event(int irq, void *data) | |
694 | { | |
695 | struct da9062_regulators *regulators = data; | |
696 | struct da9062 *hw = regulators->regulator[0].hw; | |
697 | struct da9062_regulator *regl; | |
698 | int handled = IRQ_NONE; | |
699 | int bits, i, ret; | |
700 | ||
701 | ret = regmap_read(hw->regmap, DA9062AA_STATUS_D, &bits); | |
702 | if (ret < 0) { | |
703 | dev_err(hw->dev, | |
704 | "Failed to read LDO overcurrent indicator\n"); | |
705 | goto ldo_lim_error; | |
706 | } | |
707 | ||
708 | for (i = regulators->n_regulators - 1; i >= 0; i--) { | |
709 | regl = ®ulators->regulator[i]; | |
710 | if (regl->info->oc_event.reg != DA9062AA_STATUS_D) | |
711 | continue; | |
712 | ||
713 | if (BIT(regl->info->oc_event.lsb) & bits) { | |
714 | regulator_notifier_call_chain(regl->rdev, | |
715 | REGULATOR_EVENT_OVER_CURRENT, NULL); | |
716 | handled = IRQ_HANDLED; | |
717 | } | |
718 | } | |
719 | ||
720 | ldo_lim_error: | |
721 | return handled; | |
722 | } | |
723 | ||
724 | static int da9062_regulator_probe(struct platform_device *pdev) | |
725 | { | |
726 | struct da9062 *chip = dev_get_drvdata(pdev->dev.parent); | |
4068e518 T |
727 | struct da9062_regulators *regulators; |
728 | struct da9062_regulator *regl; | |
729 | struct regulator_config config = { }; | |
730 | int irq, n, ret; | |
731 | size_t size; | |
732 | ||
733 | /* Allocate memory required by usable regulators */ | |
734 | size = sizeof(struct da9062_regulators) + | |
735 | DA9062_MAX_REGULATORS * sizeof(struct da9062_regulator); | |
736 | regulators = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); | |
737 | if (!regulators) | |
738 | return -ENOMEM; | |
739 | ||
740 | regulators->n_regulators = DA9062_MAX_REGULATORS; | |
741 | platform_set_drvdata(pdev, regulators); | |
742 | ||
743 | n = 0; | |
744 | while (n < regulators->n_regulators) { | |
745 | /* Initialise regulator structure */ | |
746 | regl = ®ulators->regulator[n]; | |
747 | regl->hw = chip; | |
748 | regl->info = &local_regulator_info[n]; | |
749 | regl->desc = regl->info->desc; | |
750 | regl->desc.type = REGULATOR_VOLTAGE; | |
751 | regl->desc.owner = THIS_MODULE; | |
752 | ||
753 | if (regl->info->mode.reg) | |
754 | regl->mode = devm_regmap_field_alloc( | |
755 | &pdev->dev, | |
756 | chip->regmap, | |
757 | regl->info->mode); | |
758 | if (regl->info->suspend.reg) | |
759 | regl->suspend = devm_regmap_field_alloc( | |
760 | &pdev->dev, | |
761 | chip->regmap, | |
762 | regl->info->suspend); | |
763 | if (regl->info->sleep.reg) | |
764 | regl->sleep = devm_regmap_field_alloc( | |
765 | &pdev->dev, | |
766 | chip->regmap, | |
767 | regl->info->sleep); | |
768 | if (regl->info->suspend_sleep.reg) | |
769 | regl->suspend_sleep = devm_regmap_field_alloc( | |
770 | &pdev->dev, | |
771 | chip->regmap, | |
772 | regl->info->suspend_sleep); | |
773 | if (regl->info->ilimit.reg) | |
774 | regl->ilimit = devm_regmap_field_alloc( | |
775 | &pdev->dev, | |
776 | chip->regmap, | |
777 | regl->info->ilimit); | |
778 | ||
779 | /* Register regulator */ | |
780 | memset(&config, 0, sizeof(config)); | |
781 | config.dev = chip->dev; | |
782 | config.driver_data = regl; | |
783 | config.regmap = chip->regmap; | |
784 | ||
785 | regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, | |
786 | &config); | |
787 | if (IS_ERR(regl->rdev)) { | |
788 | dev_err(&pdev->dev, | |
789 | "Failed to register %s regulator\n", | |
790 | regl->desc.name); | |
791 | return PTR_ERR(regl->rdev); | |
792 | } | |
793 | ||
794 | n++; | |
795 | } | |
796 | ||
797 | /* LDOs overcurrent event support */ | |
798 | irq = platform_get_irq_byname(pdev, "LDO_LIM"); | |
799 | if (irq < 0) { | |
800 | dev_err(&pdev->dev, "Failed to get IRQ.\n"); | |
801 | return irq; | |
802 | } | |
803 | regulators->irq_ldo_lim = irq; | |
804 | ||
805 | ret = devm_request_threaded_irq(&pdev->dev, irq, | |
806 | NULL, da9062_ldo_lim_event, | |
807 | IRQF_TRIGGER_LOW | IRQF_ONESHOT, | |
808 | "LDO_LIM", regulators); | |
809 | if (ret) { | |
810 | dev_warn(&pdev->dev, | |
811 | "Failed to request LDO_LIM IRQ.\n"); | |
812 | regulators->irq_ldo_lim = -ENXIO; | |
813 | } | |
814 | ||
815 | return 0; | |
816 | } | |
817 | ||
818 | static struct platform_driver da9062_regulator_driver = { | |
819 | .driver = { | |
820 | .name = "da9062-regulators", | |
4068e518 T |
821 | }, |
822 | .probe = da9062_regulator_probe, | |
823 | }; | |
824 | ||
825 | static int __init da9062_regulator_init(void) | |
826 | { | |
827 | return platform_driver_register(&da9062_regulator_driver); | |
828 | } | |
829 | subsys_initcall(da9062_regulator_init); | |
830 | ||
831 | static void __exit da9062_regulator_cleanup(void) | |
832 | { | |
833 | platform_driver_unregister(&da9062_regulator_driver); | |
834 | } | |
835 | module_exit(da9062_regulator_cleanup); | |
836 | ||
837 | /* Module information */ | |
838 | MODULE_AUTHOR("S Twiss <stwiss.opensource@diasemi.com>"); | |
839 | MODULE_DESCRIPTION("REGULATOR device driver for Dialog DA9062"); | |
840 | MODULE_LICENSE("GPL"); | |
ea6254e5 | 841 | MODULE_ALIAS("platform:da9062-regulators"); |