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e5ce4208 GG |
1 | /* |
2 | * Driver for Regulator part of Palmas PMIC Chips | |
3 | * | |
4 | * Copyright 2011-2012 Texas Instruments Inc. | |
5 | * | |
6 | * Author: Graeme Gregory <gg@slimlogic.co.uk> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
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/platform_device.h> | |
20 | #include <linux/regulator/driver.h> | |
21 | #include <linux/regulator/machine.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/regmap.h> | |
24 | #include <linux/mfd/palmas.h> | |
a361cd9f GG |
25 | #include <linux/of.h> |
26 | #include <linux/of_platform.h> | |
27 | #include <linux/regulator/of_regulator.h> | |
e5ce4208 GG |
28 | |
29 | struct regs_info { | |
30 | char *name; | |
31 | u8 vsel_addr; | |
32 | u8 ctrl_addr; | |
33 | u8 tstep_addr; | |
34 | }; | |
35 | ||
36 | static const struct regs_info palmas_regs_info[] = { | |
37 | { | |
38 | .name = "SMPS12", | |
39 | .vsel_addr = PALMAS_SMPS12_VOLTAGE, | |
40 | .ctrl_addr = PALMAS_SMPS12_CTRL, | |
41 | .tstep_addr = PALMAS_SMPS12_TSTEP, | |
42 | }, | |
43 | { | |
44 | .name = "SMPS123", | |
45 | .vsel_addr = PALMAS_SMPS12_VOLTAGE, | |
46 | .ctrl_addr = PALMAS_SMPS12_CTRL, | |
47 | .tstep_addr = PALMAS_SMPS12_TSTEP, | |
48 | }, | |
49 | { | |
50 | .name = "SMPS3", | |
51 | .vsel_addr = PALMAS_SMPS3_VOLTAGE, | |
52 | .ctrl_addr = PALMAS_SMPS3_CTRL, | |
53 | }, | |
54 | { | |
55 | .name = "SMPS45", | |
56 | .vsel_addr = PALMAS_SMPS45_VOLTAGE, | |
57 | .ctrl_addr = PALMAS_SMPS45_CTRL, | |
58 | .tstep_addr = PALMAS_SMPS45_TSTEP, | |
59 | }, | |
60 | { | |
61 | .name = "SMPS457", | |
62 | .vsel_addr = PALMAS_SMPS45_VOLTAGE, | |
63 | .ctrl_addr = PALMAS_SMPS45_CTRL, | |
64 | .tstep_addr = PALMAS_SMPS45_TSTEP, | |
65 | }, | |
66 | { | |
67 | .name = "SMPS6", | |
68 | .vsel_addr = PALMAS_SMPS6_VOLTAGE, | |
69 | .ctrl_addr = PALMAS_SMPS6_CTRL, | |
70 | .tstep_addr = PALMAS_SMPS6_TSTEP, | |
71 | }, | |
72 | { | |
73 | .name = "SMPS7", | |
74 | .vsel_addr = PALMAS_SMPS7_VOLTAGE, | |
75 | .ctrl_addr = PALMAS_SMPS7_CTRL, | |
76 | }, | |
77 | { | |
78 | .name = "SMPS8", | |
79 | .vsel_addr = PALMAS_SMPS8_VOLTAGE, | |
80 | .ctrl_addr = PALMAS_SMPS8_CTRL, | |
81 | .tstep_addr = PALMAS_SMPS8_TSTEP, | |
82 | }, | |
83 | { | |
84 | .name = "SMPS9", | |
85 | .vsel_addr = PALMAS_SMPS9_VOLTAGE, | |
86 | .ctrl_addr = PALMAS_SMPS9_CTRL, | |
87 | }, | |
88 | { | |
89 | .name = "SMPS10", | |
90 | }, | |
91 | { | |
92 | .name = "LDO1", | |
93 | .vsel_addr = PALMAS_LDO1_VOLTAGE, | |
94 | .ctrl_addr = PALMAS_LDO1_CTRL, | |
95 | }, | |
96 | { | |
97 | .name = "LDO2", | |
98 | .vsel_addr = PALMAS_LDO2_VOLTAGE, | |
99 | .ctrl_addr = PALMAS_LDO2_CTRL, | |
100 | }, | |
101 | { | |
102 | .name = "LDO3", | |
103 | .vsel_addr = PALMAS_LDO3_VOLTAGE, | |
104 | .ctrl_addr = PALMAS_LDO3_CTRL, | |
105 | }, | |
106 | { | |
107 | .name = "LDO4", | |
108 | .vsel_addr = PALMAS_LDO4_VOLTAGE, | |
109 | .ctrl_addr = PALMAS_LDO4_CTRL, | |
110 | }, | |
111 | { | |
112 | .name = "LDO5", | |
113 | .vsel_addr = PALMAS_LDO5_VOLTAGE, | |
114 | .ctrl_addr = PALMAS_LDO5_CTRL, | |
115 | }, | |
116 | { | |
117 | .name = "LDO6", | |
118 | .vsel_addr = PALMAS_LDO6_VOLTAGE, | |
119 | .ctrl_addr = PALMAS_LDO6_CTRL, | |
120 | }, | |
121 | { | |
122 | .name = "LDO7", | |
123 | .vsel_addr = PALMAS_LDO7_VOLTAGE, | |
124 | .ctrl_addr = PALMAS_LDO7_CTRL, | |
125 | }, | |
126 | { | |
127 | .name = "LDO8", | |
128 | .vsel_addr = PALMAS_LDO8_VOLTAGE, | |
129 | .ctrl_addr = PALMAS_LDO8_CTRL, | |
130 | }, | |
131 | { | |
132 | .name = "LDO9", | |
133 | .vsel_addr = PALMAS_LDO9_VOLTAGE, | |
134 | .ctrl_addr = PALMAS_LDO9_CTRL, | |
135 | }, | |
136 | { | |
137 | .name = "LDOLN", | |
138 | .vsel_addr = PALMAS_LDOLN_VOLTAGE, | |
139 | .ctrl_addr = PALMAS_LDOLN_CTRL, | |
140 | }, | |
141 | { | |
142 | .name = "LDOUSB", | |
143 | .vsel_addr = PALMAS_LDOUSB_VOLTAGE, | |
144 | .ctrl_addr = PALMAS_LDOUSB_CTRL, | |
145 | }, | |
146 | }; | |
147 | ||
148 | #define SMPS_CTRL_MODE_OFF 0x00 | |
149 | #define SMPS_CTRL_MODE_ON 0x01 | |
150 | #define SMPS_CTRL_MODE_ECO 0x02 | |
151 | #define SMPS_CTRL_MODE_PWM 0x03 | |
152 | ||
153 | /* These values are derived from the data sheet. And are the number of steps | |
154 | * where there is a voltage change, the ranges at beginning and end of register | |
155 | * max/min values where there are no change are ommitted. | |
156 | * | |
157 | * So they are basically (maxV-minV)/stepV | |
158 | */ | |
159 | #define PALMAS_SMPS_NUM_VOLTAGES 116 | |
160 | #define PALMAS_SMPS10_NUM_VOLTAGES 2 | |
161 | #define PALMAS_LDO_NUM_VOLTAGES 50 | |
162 | ||
163 | #define SMPS10_VSEL (1<<3) | |
164 | #define SMPS10_BOOST_EN (1<<2) | |
165 | #define SMPS10_BYPASS_EN (1<<1) | |
166 | #define SMPS10_SWITCH_EN (1<<0) | |
167 | ||
168 | #define REGULATOR_SLAVE 0 | |
169 | ||
170 | static int palmas_smps_read(struct palmas *palmas, unsigned int reg, | |
171 | unsigned int *dest) | |
172 | { | |
173 | unsigned int addr; | |
174 | ||
175 | addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg); | |
176 | ||
177 | return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest); | |
178 | } | |
179 | ||
180 | static int palmas_smps_write(struct palmas *palmas, unsigned int reg, | |
181 | unsigned int value) | |
182 | { | |
183 | unsigned int addr; | |
184 | ||
185 | addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg); | |
186 | ||
187 | return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value); | |
188 | } | |
189 | ||
190 | static int palmas_ldo_read(struct palmas *palmas, unsigned int reg, | |
191 | unsigned int *dest) | |
192 | { | |
193 | unsigned int addr; | |
194 | ||
195 | addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg); | |
196 | ||
197 | return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest); | |
198 | } | |
199 | ||
200 | static int palmas_ldo_write(struct palmas *palmas, unsigned int reg, | |
201 | unsigned int value) | |
202 | { | |
203 | unsigned int addr; | |
204 | ||
205 | addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg); | |
206 | ||
207 | return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value); | |
208 | } | |
209 | ||
210 | static int palmas_is_enabled_smps(struct regulator_dev *dev) | |
211 | { | |
212 | struct palmas_pmic *pmic = rdev_get_drvdata(dev); | |
213 | int id = rdev_get_id(dev); | |
214 | unsigned int reg; | |
215 | ||
216 | palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); | |
217 | ||
218 | reg &= PALMAS_SMPS12_CTRL_STATUS_MASK; | |
219 | reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT; | |
220 | ||
221 | return !!(reg); | |
222 | } | |
223 | ||
224 | static int palmas_enable_smps(struct regulator_dev *dev) | |
225 | { | |
226 | struct palmas_pmic *pmic = rdev_get_drvdata(dev); | |
227 | int id = rdev_get_id(dev); | |
228 | unsigned int reg; | |
229 | ||
230 | palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); | |
231 | ||
232 | reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK; | |
233 | reg |= SMPS_CTRL_MODE_ON; | |
234 | ||
235 | palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg); | |
236 | ||
237 | return 0; | |
238 | } | |
239 | ||
240 | static int palmas_disable_smps(struct regulator_dev *dev) | |
241 | { | |
242 | struct palmas_pmic *pmic = rdev_get_drvdata(dev); | |
243 | int id = rdev_get_id(dev); | |
244 | unsigned int reg; | |
245 | ||
246 | palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); | |
247 | ||
248 | reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK; | |
249 | ||
250 | palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg); | |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
255 | ||
256 | static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode) | |
257 | { | |
258 | struct palmas_pmic *pmic = rdev_get_drvdata(dev); | |
259 | int id = rdev_get_id(dev); | |
260 | unsigned int reg; | |
261 | ||
262 | palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); | |
999f0c7c | 263 | reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK; |
e5ce4208 GG |
264 | |
265 | switch (mode) { | |
266 | case REGULATOR_MODE_NORMAL: | |
267 | reg |= SMPS_CTRL_MODE_ON; | |
268 | break; | |
269 | case REGULATOR_MODE_IDLE: | |
270 | reg |= SMPS_CTRL_MODE_ECO; | |
271 | break; | |
272 | case REGULATOR_MODE_FAST: | |
273 | reg |= SMPS_CTRL_MODE_PWM; | |
274 | break; | |
275 | default: | |
276 | return -EINVAL; | |
277 | } | |
278 | palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg); | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
283 | static unsigned int palmas_get_mode_smps(struct regulator_dev *dev) | |
284 | { | |
285 | struct palmas_pmic *pmic = rdev_get_drvdata(dev); | |
286 | int id = rdev_get_id(dev); | |
287 | unsigned int reg; | |
288 | ||
289 | palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); | |
290 | reg &= PALMAS_SMPS12_CTRL_STATUS_MASK; | |
291 | reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT; | |
292 | ||
293 | switch (reg) { | |
294 | case SMPS_CTRL_MODE_ON: | |
295 | return REGULATOR_MODE_NORMAL; | |
296 | case SMPS_CTRL_MODE_ECO: | |
297 | return REGULATOR_MODE_IDLE; | |
298 | case SMPS_CTRL_MODE_PWM: | |
299 | return REGULATOR_MODE_FAST; | |
300 | } | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
305 | static int palmas_list_voltage_smps(struct regulator_dev *dev, | |
306 | unsigned selector) | |
307 | { | |
308 | struct palmas_pmic *pmic = rdev_get_drvdata(dev); | |
309 | int id = rdev_get_id(dev); | |
310 | int mult = 1; | |
311 | ||
312 | if (!selector) | |
313 | return 0; | |
314 | ||
315 | /* Read the multiplier set in VSEL register to return | |
316 | * the correct voltage. | |
317 | */ | |
318 | if (pmic->range[id]) | |
319 | mult = 2; | |
320 | ||
321 | /* Voltage is (0.49V + (selector * 0.01V)) * RANGE | |
322 | * as defined in data sheet. RANGE is either x1 or x2 | |
323 | */ | |
324 | return (490000 + (selector * 10000)) * mult; | |
325 | } | |
326 | ||
327 | static int palmas_get_voltage_smps_sel(struct regulator_dev *dev) | |
328 | { | |
329 | struct palmas_pmic *pmic = rdev_get_drvdata(dev); | |
330 | int id = rdev_get_id(dev); | |
331 | int selector; | |
332 | unsigned int reg; | |
333 | unsigned int addr; | |
334 | ||
335 | addr = palmas_regs_info[id].vsel_addr; | |
336 | ||
337 | palmas_smps_read(pmic->palmas, addr, ®); | |
338 | ||
339 | selector = reg & PALMAS_SMPS12_VOLTAGE_VSEL_MASK; | |
340 | ||
341 | /* Adjust selector to match list_voltage ranges */ | |
342 | if ((selector > 0) && (selector < 6)) | |
343 | selector = 6; | |
344 | if (!selector) | |
345 | selector = 5; | |
346 | if (selector > 121) | |
347 | selector = 121; | |
348 | selector -= 5; | |
349 | ||
350 | return selector; | |
351 | } | |
352 | ||
353 | static int palmas_set_voltage_smps_sel(struct regulator_dev *dev, | |
354 | unsigned selector) | |
355 | { | |
356 | struct palmas_pmic *pmic = rdev_get_drvdata(dev); | |
357 | int id = rdev_get_id(dev); | |
358 | unsigned int reg = 0; | |
359 | unsigned int addr; | |
360 | ||
361 | addr = palmas_regs_info[id].vsel_addr; | |
362 | ||
363 | /* Make sure we don't change the value of RANGE */ | |
364 | if (pmic->range[id]) | |
365 | reg |= PALMAS_SMPS12_VOLTAGE_RANGE; | |
366 | ||
367 | /* Adjust the linux selector into range used in VSEL register */ | |
368 | if (selector) | |
369 | reg |= selector + 5; | |
370 | ||
371 | palmas_smps_write(pmic->palmas, addr, reg); | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int palmas_map_voltage_smps(struct regulator_dev *rdev, | |
377 | int min_uV, int max_uV) | |
378 | { | |
8a165df7 AL |
379 | struct palmas_pmic *pmic = rdev_get_drvdata(rdev); |
380 | int id = rdev_get_id(rdev); | |
e5ce4208 GG |
381 | int ret, voltage; |
382 | ||
8a165df7 AL |
383 | if (min_uV == 0) |
384 | return 0; | |
385 | ||
386 | if (pmic->range[id]) { /* RANGE is x2 */ | |
387 | if (min_uV < 1000000) | |
388 | min_uV = 1000000; | |
389 | ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 1; | |
390 | } else { /* RANGE is x1 */ | |
391 | if (min_uV < 500000) | |
392 | min_uV = 500000; | |
393 | ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 1; | |
394 | } | |
e5ce4208 GG |
395 | |
396 | /* Map back into a voltage to verify we're still in bounds */ | |
397 | voltage = palmas_list_voltage_smps(rdev, ret); | |
398 | if (voltage < min_uV || voltage > max_uV) | |
399 | return -EINVAL; | |
400 | ||
401 | return ret; | |
402 | } | |
403 | ||
404 | static struct regulator_ops palmas_ops_smps = { | |
405 | .is_enabled = palmas_is_enabled_smps, | |
406 | .enable = palmas_enable_smps, | |
407 | .disable = palmas_disable_smps, | |
408 | .set_mode = palmas_set_mode_smps, | |
409 | .get_mode = palmas_get_mode_smps, | |
410 | .get_voltage_sel = palmas_get_voltage_smps_sel, | |
411 | .set_voltage_sel = palmas_set_voltage_smps_sel, | |
412 | .list_voltage = palmas_list_voltage_smps, | |
413 | .map_voltage = palmas_map_voltage_smps, | |
414 | }; | |
415 | ||
e5ce4208 GG |
416 | static struct regulator_ops palmas_ops_smps10 = { |
417 | .is_enabled = regulator_is_enabled_regmap, | |
418 | .enable = regulator_enable_regmap, | |
419 | .disable = regulator_disable_regmap, | |
420 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
421 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
8029a006 AL |
422 | .list_voltage = regulator_list_voltage_linear, |
423 | .map_voltage = regulator_map_voltage_linear, | |
e5ce4208 GG |
424 | }; |
425 | ||
426 | static int palmas_is_enabled_ldo(struct regulator_dev *dev) | |
427 | { | |
428 | struct palmas_pmic *pmic = rdev_get_drvdata(dev); | |
429 | int id = rdev_get_id(dev); | |
430 | unsigned int reg; | |
431 | ||
432 | palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®); | |
433 | ||
434 | reg &= PALMAS_LDO1_CTRL_STATUS; | |
435 | ||
436 | return !!(reg); | |
437 | } | |
438 | ||
439 | static int palmas_list_voltage_ldo(struct regulator_dev *dev, | |
440 | unsigned selector) | |
441 | { | |
442 | if (!selector) | |
443 | return 0; | |
444 | ||
445 | /* voltage is 0.85V + (selector * 0.05v) */ | |
446 | return 850000 + (selector * 50000); | |
447 | } | |
448 | ||
e5ce4208 GG |
449 | static int palmas_map_voltage_ldo(struct regulator_dev *rdev, |
450 | int min_uV, int max_uV) | |
451 | { | |
452 | int ret, voltage; | |
453 | ||
a5f8ae21 AL |
454 | if (min_uV == 0) |
455 | return 0; | |
456 | ||
457 | if (min_uV < 900000) | |
458 | min_uV = 900000; | |
459 | ret = DIV_ROUND_UP(min_uV - 900000, 50000) + 1; | |
e5ce4208 GG |
460 | |
461 | /* Map back into a voltage to verify we're still in bounds */ | |
462 | voltage = palmas_list_voltage_ldo(rdev, ret); | |
463 | if (voltage < min_uV || voltage > max_uV) | |
464 | return -EINVAL; | |
465 | ||
466 | return ret; | |
467 | } | |
468 | ||
469 | static struct regulator_ops palmas_ops_ldo = { | |
470 | .is_enabled = palmas_is_enabled_ldo, | |
471 | .enable = regulator_enable_regmap, | |
472 | .disable = regulator_disable_regmap, | |
4a247a96 AL |
473 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
474 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
e5ce4208 GG |
475 | .list_voltage = palmas_list_voltage_ldo, |
476 | .map_voltage = palmas_map_voltage_ldo, | |
477 | }; | |
478 | ||
479 | /* | |
480 | * setup the hardware based sleep configuration of the SMPS/LDO regulators | |
481 | * from the platform data. This is different to the software based control | |
482 | * supported by the regulator framework as it is controlled by toggling | |
483 | * pins on the PMIC such as PREQ, SYSEN, ... | |
484 | */ | |
485 | static int palmas_smps_init(struct palmas *palmas, int id, | |
486 | struct palmas_reg_init *reg_init) | |
487 | { | |
488 | unsigned int reg; | |
489 | unsigned int addr; | |
490 | int ret; | |
491 | ||
492 | addr = palmas_regs_info[id].ctrl_addr; | |
493 | ||
494 | ret = palmas_smps_read(palmas, addr, ®); | |
495 | if (ret) | |
496 | return ret; | |
497 | ||
fedd89b1 AL |
498 | switch (id) { |
499 | case PALMAS_REG_SMPS10: | |
500 | if (reg_init->mode_sleep) { | |
501 | reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK; | |
502 | reg |= reg_init->mode_sleep << | |
503 | PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT; | |
504 | } | |
505 | break; | |
506 | default: | |
e5ce4208 GG |
507 | if (reg_init->warm_reset) |
508 | reg |= PALMAS_SMPS12_CTRL_WR_S; | |
509 | ||
510 | if (reg_init->roof_floor) | |
511 | reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN; | |
512 | ||
513 | if (reg_init->mode_sleep) { | |
514 | reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK; | |
515 | reg |= reg_init->mode_sleep << | |
516 | PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT; | |
517 | } | |
e5ce4208 | 518 | } |
fedd89b1 | 519 | |
e5ce4208 GG |
520 | ret = palmas_smps_write(palmas, addr, reg); |
521 | if (ret) | |
522 | return ret; | |
523 | ||
524 | if (palmas_regs_info[id].tstep_addr && reg_init->tstep) { | |
525 | addr = palmas_regs_info[id].tstep_addr; | |
526 | ||
527 | reg = reg_init->tstep & PALMAS_SMPS12_TSTEP_TSTEP_MASK; | |
528 | ||
529 | ret = palmas_smps_write(palmas, addr, reg); | |
530 | if (ret) | |
531 | return ret; | |
532 | } | |
533 | ||
534 | if (palmas_regs_info[id].vsel_addr && reg_init->vsel) { | |
535 | addr = palmas_regs_info[id].vsel_addr; | |
536 | ||
537 | reg = reg_init->vsel; | |
538 | ||
539 | ret = palmas_smps_write(palmas, addr, reg); | |
540 | if (ret) | |
541 | return ret; | |
542 | } | |
543 | ||
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | static int palmas_ldo_init(struct palmas *palmas, int id, | |
549 | struct palmas_reg_init *reg_init) | |
550 | { | |
551 | unsigned int reg; | |
552 | unsigned int addr; | |
553 | int ret; | |
554 | ||
555 | addr = palmas_regs_info[id].ctrl_addr; | |
556 | ||
2735daeb | 557 | ret = palmas_ldo_read(palmas, addr, ®); |
e5ce4208 GG |
558 | if (ret) |
559 | return ret; | |
560 | ||
561 | if (reg_init->warm_reset) | |
562 | reg |= PALMAS_LDO1_CTRL_WR_S; | |
563 | ||
564 | if (reg_init->mode_sleep) | |
565 | reg |= PALMAS_LDO1_CTRL_MODE_SLEEP; | |
566 | ||
2735daeb | 567 | ret = palmas_ldo_write(palmas, addr, reg); |
e5ce4208 GG |
568 | if (ret) |
569 | return ret; | |
570 | ||
571 | return 0; | |
572 | } | |
573 | ||
a361cd9f GG |
574 | static struct of_regulator_match palmas_matches[] = { |
575 | { .name = "smps12", }, | |
576 | { .name = "smps123", }, | |
577 | { .name = "smps3", }, | |
578 | { .name = "smps45", }, | |
579 | { .name = "smps457", }, | |
580 | { .name = "smps6", }, | |
581 | { .name = "smps7", }, | |
582 | { .name = "smps8", }, | |
583 | { .name = "smps9", }, | |
584 | { .name = "smps10", }, | |
585 | { .name = "ldo1", }, | |
586 | { .name = "ldo2", }, | |
587 | { .name = "ldo3", }, | |
588 | { .name = "ldo4", }, | |
589 | { .name = "ldo5", }, | |
590 | { .name = "ldo6", }, | |
591 | { .name = "ldo7", }, | |
592 | { .name = "ldo8", }, | |
593 | { .name = "ldo9", }, | |
594 | { .name = "ldoln", }, | |
595 | { .name = "ldousb", }, | |
596 | }; | |
597 | ||
598 | static void __devinit palmas_dt_to_pdata(struct device *dev, | |
599 | struct device_node *node, | |
600 | struct palmas_pmic_platform_data *pdata) | |
601 | { | |
602 | struct device_node *regulators; | |
603 | u32 prop; | |
604 | int idx, ret; | |
605 | ||
606 | regulators = of_find_node_by_name(node, "regulators"); | |
607 | if (!regulators) { | |
608 | dev_info(dev, "regulator node not found\n"); | |
609 | return; | |
610 | } | |
611 | ||
612 | ret = of_regulator_match(dev, regulators, palmas_matches, | |
613 | PALMAS_NUM_REGS); | |
614 | if (ret < 0) { | |
615 | dev_err(dev, "Error parsing regulator init data: %d\n", ret); | |
616 | return; | |
617 | } | |
618 | ||
619 | for (idx = 0; idx < PALMAS_NUM_REGS; idx++) { | |
620 | if (!palmas_matches[idx].init_data || | |
621 | !palmas_matches[idx].of_node) | |
622 | continue; | |
623 | ||
624 | pdata->reg_data[idx] = palmas_matches[idx].init_data; | |
625 | ||
626 | pdata->reg_init[idx] = devm_kzalloc(dev, | |
627 | sizeof(struct palmas_reg_init), GFP_KERNEL); | |
628 | ||
629 | ret = of_property_read_u32(palmas_matches[idx].of_node, | |
630 | "ti,warm_reset", &prop); | |
631 | if (!ret) | |
632 | pdata->reg_init[idx]->warm_reset = prop; | |
633 | ||
634 | ret = of_property_read_u32(palmas_matches[idx].of_node, | |
635 | "ti,roof_floor", &prop); | |
636 | if (!ret) | |
637 | pdata->reg_init[idx]->roof_floor = prop; | |
638 | ||
639 | ret = of_property_read_u32(palmas_matches[idx].of_node, | |
640 | "ti,mode_sleep", &prop); | |
641 | if (!ret) | |
642 | pdata->reg_init[idx]->mode_sleep = prop; | |
643 | ||
644 | ret = of_property_read_u32(palmas_matches[idx].of_node, | |
645 | "ti,warm_reset", &prop); | |
646 | if (!ret) | |
647 | pdata->reg_init[idx]->warm_reset = prop; | |
648 | ||
649 | ret = of_property_read_u32(palmas_matches[idx].of_node, | |
650 | "ti,tstep", &prop); | |
651 | if (!ret) | |
652 | pdata->reg_init[idx]->tstep = prop; | |
653 | ||
654 | ret = of_property_read_u32(palmas_matches[idx].of_node, | |
655 | "ti,vsel", &prop); | |
656 | if (!ret) | |
657 | pdata->reg_init[idx]->vsel = prop; | |
658 | } | |
659 | ||
660 | ret = of_property_read_u32(node, "ti,ldo6_vibrator", &prop); | |
661 | if (!ret) | |
662 | pdata->ldo6_vibrator = prop; | |
663 | } | |
664 | ||
665 | ||
e5ce4208 GG |
666 | static __devinit int palmas_probe(struct platform_device *pdev) |
667 | { | |
668 | struct palmas *palmas = dev_get_drvdata(pdev->dev.parent); | |
669 | struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data; | |
a361cd9f | 670 | struct device_node *node = pdev->dev.of_node; |
e5ce4208 GG |
671 | struct regulator_dev *rdev; |
672 | struct regulator_config config = { }; | |
673 | struct palmas_pmic *pmic; | |
674 | struct palmas_reg_init *reg_init; | |
675 | int id = 0, ret; | |
676 | unsigned int addr, reg; | |
677 | ||
a361cd9f GG |
678 | if (node && !pdata) { |
679 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); | |
680 | ||
681 | if (!pdata) | |
682 | return -ENOMEM; | |
683 | ||
684 | palmas_dt_to_pdata(&pdev->dev, node, pdata); | |
685 | } | |
e5ce4208 GG |
686 | |
687 | pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL); | |
688 | if (!pmic) | |
689 | return -ENOMEM; | |
690 | ||
691 | pmic->dev = &pdev->dev; | |
692 | pmic->palmas = palmas; | |
693 | palmas->pmic = pmic; | |
694 | platform_set_drvdata(pdev, pmic); | |
695 | ||
696 | ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, ®); | |
697 | if (ret) | |
1c9d2d71 | 698 | return ret; |
e5ce4208 GG |
699 | |
700 | if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN) | |
701 | pmic->smps123 = 1; | |
702 | ||
703 | if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN) | |
704 | pmic->smps457 = 1; | |
705 | ||
706 | config.regmap = palmas->regmap[REGULATOR_SLAVE]; | |
707 | config.dev = &pdev->dev; | |
708 | config.driver_data = pmic; | |
709 | ||
710 | for (id = 0; id < PALMAS_REG_LDO1; id++) { | |
711 | ||
712 | /* | |
713 | * Miss out regulators which are not available due | |
714 | * to slaving configurations. | |
715 | */ | |
716 | switch (id) { | |
717 | case PALMAS_REG_SMPS12: | |
718 | case PALMAS_REG_SMPS3: | |
719 | if (pmic->smps123) | |
720 | continue; | |
721 | break; | |
722 | case PALMAS_REG_SMPS123: | |
723 | if (!pmic->smps123) | |
724 | continue; | |
725 | break; | |
726 | case PALMAS_REG_SMPS45: | |
727 | case PALMAS_REG_SMPS7: | |
728 | if (pmic->smps457) | |
729 | continue; | |
730 | break; | |
731 | case PALMAS_REG_SMPS457: | |
732 | if (!pmic->smps457) | |
733 | continue; | |
734 | } | |
735 | ||
736 | /* Register the regulators */ | |
737 | pmic->desc[id].name = palmas_regs_info[id].name; | |
738 | pmic->desc[id].id = id; | |
739 | ||
fedd89b1 AL |
740 | switch (id) { |
741 | case PALMAS_REG_SMPS10: | |
e5ce4208 GG |
742 | pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES; |
743 | pmic->desc[id].ops = &palmas_ops_smps10; | |
12565b16 AL |
744 | pmic->desc[id].vsel_reg = |
745 | PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, | |
746 | PALMAS_SMPS10_CTRL); | |
e5ce4208 | 747 | pmic->desc[id].vsel_mask = SMPS10_VSEL; |
a68de074 GG |
748 | pmic->desc[id].enable_reg = |
749 | PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, | |
750 | PALMAS_SMPS10_STATUS); | |
e5ce4208 | 751 | pmic->desc[id].enable_mask = SMPS10_BOOST_EN; |
8029a006 AL |
752 | pmic->desc[id].min_uV = 3750000; |
753 | pmic->desc[id].uV_step = 1250000; | |
fedd89b1 AL |
754 | break; |
755 | default: | |
756 | pmic->desc[id].ops = &palmas_ops_smps; | |
757 | pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES; | |
e5ce4208 GG |
758 | } |
759 | ||
760 | pmic->desc[id].type = REGULATOR_VOLTAGE; | |
761 | pmic->desc[id].owner = THIS_MODULE; | |
762 | ||
763 | /* Initialise sleep/init values from platform data */ | |
a361cd9f | 764 | if (pdata) { |
e5ce4208 GG |
765 | reg_init = pdata->reg_init[id]; |
766 | if (reg_init) { | |
767 | ret = palmas_smps_init(palmas, id, reg_init); | |
768 | if (ret) | |
769 | goto err_unregister_regulator; | |
770 | } | |
771 | } | |
772 | ||
773 | /* | |
774 | * read and store the RANGE bit for later use | |
775 | * This must be done before regulator is probed otherwise | |
776 | * we error in probe with unsuportable ranges. | |
777 | */ | |
778 | if (id != PALMAS_REG_SMPS10) { | |
779 | addr = palmas_regs_info[id].vsel_addr; | |
780 | ||
781 | ret = palmas_smps_read(pmic->palmas, addr, ®); | |
782 | if (ret) | |
783 | goto err_unregister_regulator; | |
784 | if (reg & PALMAS_SMPS12_VOLTAGE_RANGE) | |
785 | pmic->range[id] = 1; | |
786 | } | |
787 | ||
a361cd9f | 788 | if (pdata) |
e5ce4208 GG |
789 | config.init_data = pdata->reg_data[id]; |
790 | else | |
791 | config.init_data = NULL; | |
792 | ||
a361cd9f GG |
793 | config.of_node = palmas_matches[id].of_node; |
794 | ||
e5ce4208 GG |
795 | rdev = regulator_register(&pmic->desc[id], &config); |
796 | if (IS_ERR(rdev)) { | |
797 | dev_err(&pdev->dev, | |
798 | "failed to register %s regulator\n", | |
799 | pdev->name); | |
800 | ret = PTR_ERR(rdev); | |
801 | goto err_unregister_regulator; | |
802 | } | |
803 | ||
804 | /* Save regulator for cleanup */ | |
805 | pmic->rdev[id] = rdev; | |
806 | } | |
807 | ||
808 | /* Start this loop from the id left from previous loop */ | |
809 | for (; id < PALMAS_NUM_REGS; id++) { | |
810 | ||
811 | /* Miss out regulators which are not available due | |
812 | * to alternate functions. | |
813 | */ | |
814 | ||
815 | /* Register the regulators */ | |
816 | pmic->desc[id].name = palmas_regs_info[id].name; | |
817 | pmic->desc[id].id = id; | |
818 | pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES; | |
819 | ||
820 | pmic->desc[id].ops = &palmas_ops_ldo; | |
821 | ||
822 | pmic->desc[id].type = REGULATOR_VOLTAGE; | |
823 | pmic->desc[id].owner = THIS_MODULE; | |
4a247a96 AL |
824 | pmic->desc[id].vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, |
825 | palmas_regs_info[id].vsel_addr); | |
826 | pmic->desc[id].vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK; | |
a68de074 GG |
827 | pmic->desc[id].enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, |
828 | palmas_regs_info[id].ctrl_addr); | |
e5ce4208 GG |
829 | pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE; |
830 | ||
a361cd9f | 831 | if (pdata) |
e5ce4208 GG |
832 | config.init_data = pdata->reg_data[id]; |
833 | else | |
834 | config.init_data = NULL; | |
835 | ||
a361cd9f GG |
836 | config.of_node = palmas_matches[id].of_node; |
837 | ||
e5ce4208 GG |
838 | rdev = regulator_register(&pmic->desc[id], &config); |
839 | if (IS_ERR(rdev)) { | |
840 | dev_err(&pdev->dev, | |
841 | "failed to register %s regulator\n", | |
842 | pdev->name); | |
843 | ret = PTR_ERR(rdev); | |
844 | goto err_unregister_regulator; | |
845 | } | |
846 | ||
847 | /* Save regulator for cleanup */ | |
848 | pmic->rdev[id] = rdev; | |
849 | ||
850 | /* Initialise sleep/init values from platform data */ | |
a361cd9f | 851 | if (pdata) { |
e5ce4208 GG |
852 | reg_init = pdata->reg_init[id]; |
853 | if (reg_init) { | |
854 | ret = palmas_ldo_init(palmas, id, reg_init); | |
1c9d2d71 AL |
855 | if (ret) { |
856 | regulator_unregister(pmic->rdev[id]); | |
e5ce4208 | 857 | goto err_unregister_regulator; |
1c9d2d71 | 858 | } |
e5ce4208 GG |
859 | } |
860 | } | |
861 | } | |
862 | ||
863 | return 0; | |
864 | ||
865 | err_unregister_regulator: | |
866 | while (--id >= 0) | |
867 | regulator_unregister(pmic->rdev[id]); | |
e5ce4208 GG |
868 | return ret; |
869 | } | |
870 | ||
871 | static int __devexit palmas_remove(struct platform_device *pdev) | |
872 | { | |
873 | struct palmas_pmic *pmic = platform_get_drvdata(pdev); | |
874 | int id; | |
875 | ||
876 | for (id = 0; id < PALMAS_NUM_REGS; id++) | |
877 | regulator_unregister(pmic->rdev[id]); | |
e5ce4208 GG |
878 | return 0; |
879 | } | |
880 | ||
a361cd9f GG |
881 | static struct of_device_id __devinitdata of_palmas_match_tbl[] = { |
882 | { .compatible = "ti,palmas-pmic", }, | |
883 | { /* end */ } | |
884 | }; | |
885 | ||
e5ce4208 GG |
886 | static struct platform_driver palmas_driver = { |
887 | .driver = { | |
888 | .name = "palmas-pmic", | |
a361cd9f | 889 | .of_match_table = of_palmas_match_tbl, |
e5ce4208 GG |
890 | .owner = THIS_MODULE, |
891 | }, | |
892 | .probe = palmas_probe, | |
5eb9f2b9 | 893 | .remove = palmas_remove, |
e5ce4208 GG |
894 | }; |
895 | ||
896 | static int __init palmas_init(void) | |
897 | { | |
898 | return platform_driver_register(&palmas_driver); | |
899 | } | |
900 | subsys_initcall(palmas_init); | |
901 | ||
902 | static void __exit palmas_exit(void) | |
903 | { | |
904 | platform_driver_unregister(&palmas_driver); | |
905 | } | |
906 | module_exit(palmas_exit); | |
907 | ||
908 | MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); | |
909 | MODULE_DESCRIPTION("Palmas voltage regulator driver"); | |
910 | MODULE_LICENSE("GPL"); | |
911 | MODULE_ALIAS("platform:palmas-pmic"); | |
a361cd9f | 912 | MODULE_DEVICE_TABLE(of, of_palmas_match_tbl); |