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9260ad98 MO |
1 | /* |
2 | * tps65912.c -- TI tps65912 | |
3 | * | |
4 | * Copyright 2011 Texas Instruments Inc. | |
5 | * | |
6 | * Author: Margarita Olaya Cabrera <magi@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 | * This driver is based on wm8350 implementation. | |
14 | */ | |
15 | ||
16 | #include <linux/kernel.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/err.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/regulator/driver.h> | |
22 | #include <linux/regulator/machine.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/gpio.h> | |
26 | #include <linux/mfd/tps65912.h> | |
27 | ||
28 | /* DCDC's */ | |
29 | #define TPS65912_REG_DCDC1 0 | |
30 | #define TPS65912_REG_DCDC2 1 | |
31 | #define TPS65912_REG_DCDC3 2 | |
32 | #define TPS65912_REG_DCDC4 3 | |
33 | ||
34 | /* LDOs */ | |
35 | #define TPS65912_REG_LDO1 4 | |
36 | #define TPS65912_REG_LDO2 5 | |
37 | #define TPS65912_REG_LDO3 6 | |
38 | #define TPS65912_REG_LDO4 7 | |
39 | #define TPS65912_REG_LDO5 8 | |
40 | #define TPS65912_REG_LDO6 9 | |
41 | #define TPS65912_REG_LDO7 10 | |
42 | #define TPS65912_REG_LDO8 11 | |
43 | #define TPS65912_REG_LDO9 12 | |
44 | #define TPS65912_REG_LDO10 13 | |
45 | ||
46 | #define TPS65912_MAX_REG_ID TPS65912_REG_LDO_10 | |
47 | ||
48 | /* Number of step-down converters available */ | |
49 | #define TPS65912_NUM_DCDC 4 | |
50 | ||
51 | /* Number of LDO voltage regulators available */ | |
52 | #define TPS65912_NUM_LDO 10 | |
53 | ||
54 | /* Number of total regulators available */ | |
55 | #define TPS65912_NUM_REGULATOR (TPS65912_NUM_DCDC + TPS65912_NUM_LDO) | |
56 | ||
57 | #define TPS65912_REG_ENABLED 0x80 | |
58 | #define OP_SELREG_MASK 0x40 | |
59 | #define OP_SELREG_SHIFT 6 | |
60 | ||
61 | struct tps_info { | |
62 | const char *name; | |
63 | }; | |
64 | ||
65 | static struct tps_info tps65912_regs[] = { | |
66 | { | |
67 | .name = "DCDC1", | |
68 | }, | |
69 | { | |
70 | .name = "DCDC2", | |
71 | }, | |
72 | { | |
73 | .name = "DCDC3", | |
74 | }, | |
75 | { | |
76 | .name = "DCDC4", | |
77 | }, | |
78 | { | |
79 | .name = "LDO1", | |
80 | }, | |
81 | { | |
82 | .name = "LDO2", | |
83 | }, | |
84 | { | |
85 | .name = "LDO3", | |
86 | }, | |
87 | { | |
88 | .name = "LDO4", | |
89 | }, | |
90 | { | |
91 | .name = "LDO5", | |
92 | }, | |
93 | { | |
94 | .name = "LDO6", | |
95 | }, | |
96 | { | |
97 | .name = "LDO7", | |
98 | }, | |
99 | { | |
100 | .name = "LDO8", | |
101 | }, | |
102 | { | |
103 | .name = "LDO9", | |
104 | }, | |
105 | { | |
106 | .name = "LDO10", | |
107 | }, | |
108 | }; | |
109 | ||
110 | struct tps65912_reg { | |
111 | struct regulator_desc desc[TPS65912_NUM_REGULATOR]; | |
112 | struct tps65912 *mfd; | |
113 | struct regulator_dev *rdev[TPS65912_NUM_REGULATOR]; | |
114 | struct tps_info *info[TPS65912_NUM_REGULATOR]; | |
115 | /* for read/write access */ | |
116 | struct mutex io_lock; | |
117 | int mode; | |
118 | int (*get_ctrl_reg)(int); | |
119 | int dcdc1_range; | |
120 | int dcdc2_range; | |
121 | int dcdc3_range; | |
122 | int dcdc4_range; | |
123 | int pwm_mode_reg; | |
124 | int eco_reg; | |
125 | }; | |
126 | ||
127 | static int tps65912_get_range(struct tps65912_reg *pmic, int id) | |
128 | { | |
129 | struct tps65912 *mfd = pmic->mfd; | |
130 | ||
131 | if (id > TPS65912_REG_DCDC4) | |
132 | return 0; | |
133 | ||
134 | switch (id) { | |
135 | case TPS65912_REG_DCDC1: | |
136 | pmic->dcdc1_range = tps65912_reg_read(mfd, | |
137 | TPS65912_DCDC1_LIMIT); | |
138 | if (pmic->dcdc1_range < 0) | |
139 | return pmic->dcdc1_range; | |
140 | pmic->dcdc1_range = (pmic->dcdc1_range & | |
141 | DCDC_LIMIT_RANGE_MASK) >> DCDC_LIMIT_RANGE_SHIFT; | |
142 | return pmic->dcdc1_range; | |
143 | case TPS65912_REG_DCDC2: | |
144 | pmic->dcdc2_range = tps65912_reg_read(mfd, | |
145 | TPS65912_DCDC2_LIMIT); | |
146 | if (pmic->dcdc2_range < 0) | |
147 | return pmic->dcdc2_range; | |
148 | pmic->dcdc2_range = (pmic->dcdc2_range & | |
149 | DCDC_LIMIT_RANGE_MASK) >> DCDC_LIMIT_RANGE_SHIFT; | |
150 | return pmic->dcdc2_range; | |
151 | case TPS65912_REG_DCDC3: | |
152 | pmic->dcdc3_range = tps65912_reg_read(mfd, | |
153 | TPS65912_DCDC3_LIMIT); | |
154 | if (pmic->dcdc3_range < 0) | |
155 | return pmic->dcdc3_range; | |
156 | pmic->dcdc3_range = (pmic->dcdc3_range & | |
157 | DCDC_LIMIT_RANGE_MASK) >> DCDC_LIMIT_RANGE_SHIFT; | |
158 | return pmic->dcdc3_range; | |
159 | case TPS65912_REG_DCDC4: | |
160 | pmic->dcdc4_range = tps65912_reg_read(mfd, | |
161 | TPS65912_DCDC4_LIMIT); | |
162 | if (pmic->dcdc4_range < 0) | |
163 | return pmic->dcdc4_range; | |
164 | pmic->dcdc4_range = (pmic->dcdc4_range & | |
165 | DCDC_LIMIT_RANGE_MASK) >> DCDC_LIMIT_RANGE_SHIFT; | |
166 | return pmic->dcdc4_range; | |
167 | default: | |
168 | return 0; | |
169 | } | |
170 | } | |
171 | ||
172 | static unsigned long tps65912_vsel_to_uv_range0(u8 vsel) | |
173 | { | |
174 | unsigned long uv; | |
175 | ||
176 | uv = ((vsel * 12500) + 500000); | |
177 | return uv; | |
178 | } | |
179 | ||
180 | static unsigned long tps65912_vsel_to_uv_range1(u8 vsel) | |
181 | { | |
182 | unsigned long uv; | |
183 | ||
184 | uv = ((vsel * 12500) + 700000); | |
185 | return uv; | |
186 | } | |
187 | ||
188 | static unsigned long tps65912_vsel_to_uv_range2(u8 vsel) | |
189 | { | |
190 | unsigned long uv; | |
191 | ||
192 | uv = ((vsel * 25000) + 500000); | |
193 | return uv; | |
194 | } | |
195 | ||
196 | static unsigned long tps65912_vsel_to_uv_range3(u8 vsel) | |
197 | { | |
198 | unsigned long uv; | |
199 | ||
200 | if (vsel == 0x3f) | |
201 | uv = 3800000; | |
202 | else | |
203 | uv = ((vsel * 50000) + 500000); | |
204 | ||
205 | return uv; | |
206 | } | |
207 | ||
208 | static unsigned long tps65912_vsel_to_uv_ldo(u8 vsel) | |
209 | { | |
210 | unsigned long uv = 0; | |
211 | ||
212 | if (vsel <= 32) | |
213 | uv = ((vsel * 25000) + 800000); | |
214 | else if (vsel > 32 && vsel <= 60) | |
215 | uv = (((vsel - 32) * 50000) + 1600000); | |
216 | else if (vsel > 60) | |
217 | uv = (((vsel - 60) * 100000) + 3000000); | |
218 | ||
219 | return uv; | |
220 | } | |
221 | ||
222 | static int tps65912_get_ctrl_register(int id) | |
223 | { | |
224 | switch (id) { | |
225 | case TPS65912_REG_DCDC1: | |
226 | return TPS65912_DCDC1_AVS; | |
227 | case TPS65912_REG_DCDC2: | |
228 | return TPS65912_DCDC2_AVS; | |
229 | case TPS65912_REG_DCDC3: | |
230 | return TPS65912_DCDC3_AVS; | |
231 | case TPS65912_REG_DCDC4: | |
232 | return TPS65912_DCDC4_AVS; | |
233 | case TPS65912_REG_LDO1: | |
234 | return TPS65912_LDO1_AVS; | |
235 | case TPS65912_REG_LDO2: | |
236 | return TPS65912_LDO2_AVS; | |
237 | case TPS65912_REG_LDO3: | |
238 | return TPS65912_LDO3_AVS; | |
239 | case TPS65912_REG_LDO4: | |
240 | return TPS65912_LDO4_AVS; | |
241 | case TPS65912_REG_LDO5: | |
242 | return TPS65912_LDO5; | |
243 | case TPS65912_REG_LDO6: | |
244 | return TPS65912_LDO6; | |
245 | case TPS65912_REG_LDO7: | |
246 | return TPS65912_LDO7; | |
247 | case TPS65912_REG_LDO8: | |
248 | return TPS65912_LDO8; | |
249 | case TPS65912_REG_LDO9: | |
250 | return TPS65912_LDO9; | |
251 | case TPS65912_REG_LDO10: | |
252 | return TPS65912_LDO10; | |
253 | default: | |
254 | return -EINVAL; | |
255 | } | |
256 | } | |
257 | ||
258 | static int tps65912_get_dcdc_sel_register(struct tps65912_reg *pmic, int id) | |
259 | { | |
260 | struct tps65912 *mfd = pmic->mfd; | |
261 | int opvsel = 0, sr = 0; | |
262 | u8 reg = 0; | |
263 | ||
264 | if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_DCDC4) | |
265 | return -EINVAL; | |
266 | ||
267 | switch (id) { | |
268 | case TPS65912_REG_DCDC1: | |
269 | opvsel = tps65912_reg_read(mfd, TPS65912_DCDC1_OP); | |
270 | sr = ((opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT); | |
271 | if (sr) | |
272 | reg = TPS65912_DCDC1_AVS; | |
273 | else | |
274 | reg = TPS65912_DCDC1_OP; | |
275 | break; | |
276 | case TPS65912_REG_DCDC2: | |
277 | opvsel = tps65912_reg_read(mfd, TPS65912_DCDC2_OP); | |
278 | sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; | |
279 | if (sr) | |
280 | reg = TPS65912_DCDC2_AVS; | |
281 | else | |
282 | reg = TPS65912_DCDC2_OP; | |
283 | break; | |
284 | case TPS65912_REG_DCDC3: | |
285 | opvsel = tps65912_reg_read(mfd, TPS65912_DCDC3_OP); | |
286 | sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; | |
287 | if (sr) | |
288 | reg = TPS65912_DCDC3_AVS; | |
289 | else | |
290 | reg = TPS65912_DCDC3_OP; | |
291 | break; | |
292 | case TPS65912_REG_DCDC4: | |
293 | opvsel = tps65912_reg_read(mfd, TPS65912_DCDC4_OP); | |
294 | sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; | |
295 | if (sr) | |
296 | reg = TPS65912_DCDC4_AVS; | |
297 | else | |
298 | reg = TPS65912_DCDC4_OP; | |
299 | break; | |
300 | } | |
301 | return reg; | |
302 | } | |
303 | ||
304 | static int tps65912_get_ldo_sel_register(struct tps65912_reg *pmic, int id) | |
305 | { | |
306 | struct tps65912 *mfd = pmic->mfd; | |
307 | int opvsel = 0, sr = 0; | |
308 | u8 reg = 0; | |
309 | ||
310 | if (id < TPS65912_REG_LDO1 || id > TPS65912_REG_LDO10) | |
311 | return -EINVAL; | |
312 | ||
313 | switch (id) { | |
314 | case TPS65912_REG_LDO1: | |
315 | opvsel = tps65912_reg_read(mfd, TPS65912_LDO1_OP); | |
316 | sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; | |
317 | if (sr) | |
318 | reg = TPS65912_LDO1_AVS; | |
319 | else | |
320 | reg = TPS65912_LDO1_OP; | |
321 | break; | |
322 | case TPS65912_REG_LDO2: | |
323 | opvsel = tps65912_reg_read(mfd, TPS65912_LDO2_OP); | |
324 | sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; | |
325 | if (sr) | |
326 | reg = TPS65912_LDO2_AVS; | |
327 | else | |
328 | reg = TPS65912_LDO2_OP; | |
329 | break; | |
330 | case TPS65912_REG_LDO3: | |
331 | opvsel = tps65912_reg_read(mfd, TPS65912_LDO3_OP); | |
332 | sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; | |
333 | if (sr) | |
334 | reg = TPS65912_LDO3_AVS; | |
335 | else | |
336 | reg = TPS65912_LDO3_OP; | |
337 | break; | |
338 | case TPS65912_REG_LDO4: | |
339 | opvsel = tps65912_reg_read(mfd, TPS65912_LDO4_OP); | |
340 | sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; | |
341 | if (sr) | |
342 | reg = TPS65912_LDO4_AVS; | |
343 | else | |
344 | reg = TPS65912_LDO4_OP; | |
345 | break; | |
346 | case TPS65912_REG_LDO5: | |
347 | reg = TPS65912_LDO5; | |
348 | break; | |
349 | case TPS65912_REG_LDO6: | |
350 | reg = TPS65912_LDO6; | |
351 | break; | |
352 | case TPS65912_REG_LDO7: | |
353 | reg = TPS65912_LDO7; | |
354 | break; | |
355 | case TPS65912_REG_LDO8: | |
356 | reg = TPS65912_LDO8; | |
357 | break; | |
358 | case TPS65912_REG_LDO9: | |
359 | reg = TPS65912_LDO9; | |
360 | break; | |
361 | case TPS65912_REG_LDO10: | |
362 | reg = TPS65912_LDO10; | |
363 | break; | |
364 | } | |
365 | ||
366 | return reg; | |
367 | } | |
368 | ||
369 | static int tps65912_get_mode_regiters(struct tps65912_reg *pmic, int id) | |
370 | { | |
371 | switch (id) { | |
372 | case TPS65912_REG_DCDC1: | |
373 | pmic->pwm_mode_reg = TPS65912_DCDC1_CTRL; | |
374 | pmic->eco_reg = TPS65912_DCDC1_AVS; | |
375 | break; | |
376 | case TPS65912_REG_DCDC2: | |
377 | pmic->pwm_mode_reg = TPS65912_DCDC2_CTRL; | |
378 | pmic->eco_reg = TPS65912_DCDC2_AVS; | |
379 | break; | |
380 | case TPS65912_REG_DCDC3: | |
381 | pmic->pwm_mode_reg = TPS65912_DCDC3_CTRL; | |
382 | pmic->eco_reg = TPS65912_DCDC3_AVS; | |
383 | break; | |
384 | case TPS65912_REG_DCDC4: | |
385 | pmic->pwm_mode_reg = TPS65912_DCDC4_CTRL; | |
386 | pmic->eco_reg = TPS65912_DCDC4_AVS; | |
387 | break; | |
388 | default: | |
389 | return -EINVAL; | |
390 | } | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | static int tps65912_reg_is_enabled(struct regulator_dev *dev) | |
396 | { | |
397 | struct tps65912_reg *pmic = rdev_get_drvdata(dev); | |
398 | struct tps65912 *mfd = pmic->mfd; | |
399 | int reg, value, id = rdev_get_id(dev); | |
400 | ||
401 | if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_LDO10) | |
402 | return -EINVAL; | |
403 | ||
404 | reg = pmic->get_ctrl_reg(id); | |
405 | if (reg < 0) | |
406 | return reg; | |
407 | ||
408 | value = tps65912_reg_read(mfd, reg); | |
409 | if (value < 0) | |
410 | return value; | |
411 | ||
412 | return value & TPS65912_REG_ENABLED; | |
413 | } | |
414 | ||
415 | static int tps65912_reg_enable(struct regulator_dev *dev) | |
416 | { | |
417 | struct tps65912_reg *pmic = rdev_get_drvdata(dev); | |
418 | struct tps65912 *mfd = pmic->mfd; | |
419 | int id = rdev_get_id(dev); | |
6daa663d | 420 | int reg; |
9260ad98 MO |
421 | |
422 | if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_LDO10) | |
423 | return -EINVAL; | |
424 | ||
425 | reg = pmic->get_ctrl_reg(id); | |
426 | if (reg < 0) | |
427 | return reg; | |
428 | ||
429 | return tps65912_set_bits(mfd, reg, TPS65912_REG_ENABLED); | |
430 | } | |
431 | ||
432 | static int tps65912_reg_disable(struct regulator_dev *dev) | |
433 | { | |
434 | struct tps65912_reg *pmic = rdev_get_drvdata(dev); | |
435 | struct tps65912 *mfd = pmic->mfd; | |
436 | int id = rdev_get_id(dev), reg; | |
437 | ||
438 | reg = pmic->get_ctrl_reg(id); | |
439 | if (reg < 0) | |
440 | return reg; | |
441 | ||
442 | return tps65912_clear_bits(mfd, reg, TPS65912_REG_ENABLED); | |
443 | } | |
444 | ||
445 | static int tps65912_set_mode(struct regulator_dev *dev, unsigned int mode) | |
446 | { | |
447 | struct tps65912_reg *pmic = rdev_get_drvdata(dev); | |
448 | struct tps65912 *mfd = pmic->mfd; | |
449 | int pwm_mode, eco, id = rdev_get_id(dev); | |
450 | ||
451 | tps65912_get_mode_regiters(pmic, id); | |
452 | ||
453 | pwm_mode = tps65912_reg_read(mfd, pmic->pwm_mode_reg); | |
454 | eco = tps65912_reg_read(mfd, pmic->eco_reg); | |
455 | ||
456 | pwm_mode &= DCDCCTRL_DCDC_MODE_MASK; | |
457 | eco &= DCDC_AVS_ECO_MASK; | |
458 | ||
459 | switch (mode) { | |
460 | case REGULATOR_MODE_FAST: | |
461 | /* Verify if mode alredy set */ | |
462 | if (pwm_mode && !eco) | |
463 | break; | |
464 | tps65912_set_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK); | |
465 | tps65912_clear_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK); | |
466 | break; | |
467 | case REGULATOR_MODE_NORMAL: | |
468 | case REGULATOR_MODE_IDLE: | |
469 | if (!pwm_mode && !eco) | |
470 | break; | |
471 | tps65912_clear_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK); | |
472 | tps65912_clear_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK); | |
473 | break; | |
474 | case REGULATOR_MODE_STANDBY: | |
475 | if (!pwm_mode && eco) | |
476 | break; | |
477 | tps65912_clear_bits(mfd, pmic->pwm_mode_reg, DCDCCTRL_DCDC_MODE_MASK); | |
478 | tps65912_set_bits(mfd, pmic->eco_reg, DCDC_AVS_ECO_MASK); | |
479 | break; | |
480 | default: | |
481 | return -EINVAL; | |
482 | } | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | static unsigned int tps65912_get_mode(struct regulator_dev *dev) | |
488 | { | |
489 | struct tps65912_reg *pmic = rdev_get_drvdata(dev); | |
490 | struct tps65912 *mfd = pmic->mfd; | |
491 | int pwm_mode, eco, mode = 0, id = rdev_get_id(dev); | |
492 | ||
493 | tps65912_get_mode_regiters(pmic, id); | |
494 | ||
495 | pwm_mode = tps65912_reg_read(mfd, pmic->pwm_mode_reg); | |
496 | eco = tps65912_reg_read(mfd, pmic->eco_reg); | |
497 | ||
498 | pwm_mode &= DCDCCTRL_DCDC_MODE_MASK; | |
499 | eco &= DCDC_AVS_ECO_MASK; | |
500 | ||
501 | if (pwm_mode && !eco) | |
502 | mode = REGULATOR_MODE_FAST; | |
503 | else if (!pwm_mode && !eco) | |
504 | mode = REGULATOR_MODE_NORMAL; | |
505 | else if (!pwm_mode && eco) | |
506 | mode = REGULATOR_MODE_STANDBY; | |
507 | ||
508 | return mode; | |
509 | } | |
510 | ||
511 | static int tps65912_get_voltage_dcdc(struct regulator_dev *dev) | |
512 | { | |
513 | struct tps65912_reg *pmic = rdev_get_drvdata(dev); | |
514 | struct tps65912 *mfd = pmic->mfd; | |
515 | int id = rdev_get_id(dev), voltage = 0, range; | |
516 | int opvsel = 0, avsel = 0, sr, vsel; | |
517 | ||
518 | switch (id) { | |
519 | case TPS65912_REG_DCDC1: | |
520 | opvsel = tps65912_reg_read(mfd, TPS65912_DCDC1_OP); | |
521 | avsel = tps65912_reg_read(mfd, TPS65912_DCDC1_AVS); | |
522 | range = pmic->dcdc1_range; | |
523 | break; | |
524 | case TPS65912_REG_DCDC2: | |
525 | opvsel = tps65912_reg_read(mfd, TPS65912_DCDC2_OP); | |
526 | avsel = tps65912_reg_read(mfd, TPS65912_DCDC2_AVS); | |
527 | range = pmic->dcdc2_range; | |
528 | break; | |
529 | case TPS65912_REG_DCDC3: | |
530 | opvsel = tps65912_reg_read(mfd, TPS65912_DCDC3_OP); | |
531 | avsel = tps65912_reg_read(mfd, TPS65912_DCDC3_AVS); | |
532 | range = pmic->dcdc3_range; | |
533 | break; | |
534 | case TPS65912_REG_DCDC4: | |
535 | opvsel = tps65912_reg_read(mfd, TPS65912_DCDC4_OP); | |
536 | avsel = tps65912_reg_read(mfd, TPS65912_DCDC4_AVS); | |
537 | range = pmic->dcdc4_range; | |
538 | break; | |
539 | default: | |
540 | return -EINVAL; | |
541 | } | |
542 | ||
543 | sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; | |
544 | if (sr) | |
545 | vsel = avsel; | |
546 | else | |
547 | vsel = opvsel; | |
548 | vsel &= 0x3F; | |
549 | ||
550 | switch (range) { | |
551 | case 0: | |
552 | /* 0.5 - 1.2875V in 12.5mV steps */ | |
553 | voltage = tps65912_vsel_to_uv_range0(vsel); | |
554 | break; | |
555 | case 1: | |
556 | /* 0.7 - 1.4875V in 12.5mV steps */ | |
557 | voltage = tps65912_vsel_to_uv_range1(vsel); | |
558 | break; | |
559 | case 2: | |
560 | /* 0.5 - 2.075V in 25mV steps */ | |
561 | voltage = tps65912_vsel_to_uv_range2(vsel); | |
562 | break; | |
563 | case 3: | |
564 | /* 0.5 - 3.8V in 50mV steps */ | |
565 | voltage = tps65912_vsel_to_uv_range3(vsel); | |
566 | break; | |
567 | } | |
568 | return voltage; | |
569 | } | |
570 | ||
571 | static int tps65912_set_voltage_dcdc(struct regulator_dev *dev, | |
572 | unsigned selector) | |
573 | { | |
574 | struct tps65912_reg *pmic = rdev_get_drvdata(dev); | |
575 | struct tps65912 *mfd = pmic->mfd; | |
576 | int id = rdev_get_id(dev); | |
577 | int value; | |
578 | u8 reg; | |
579 | ||
580 | reg = tps65912_get_dcdc_sel_register(pmic, id); | |
581 | value = tps65912_reg_read(mfd, reg); | |
582 | value &= 0xC0; | |
583 | return tps65912_reg_write(mfd, reg, selector | value); | |
584 | } | |
585 | ||
586 | static int tps65912_get_voltage_ldo(struct regulator_dev *dev) | |
587 | { | |
588 | struct tps65912_reg *pmic = rdev_get_drvdata(dev); | |
589 | struct tps65912 *mfd = pmic->mfd; | |
590 | int id = rdev_get_id(dev); | |
591 | int vsel = 0; | |
592 | u8 reg; | |
593 | ||
594 | reg = tps65912_get_ldo_sel_register(pmic, id); | |
595 | vsel = tps65912_reg_read(mfd, reg); | |
596 | vsel &= 0x3F; | |
597 | ||
598 | return tps65912_vsel_to_uv_ldo(vsel); | |
599 | } | |
600 | ||
601 | static int tps65912_set_voltage_ldo(struct regulator_dev *dev, | |
602 | unsigned selector) | |
603 | { | |
604 | struct tps65912_reg *pmic = rdev_get_drvdata(dev); | |
605 | struct tps65912 *mfd = pmic->mfd; | |
606 | int id = rdev_get_id(dev), reg, value; | |
607 | ||
608 | reg = tps65912_get_ldo_sel_register(pmic, id); | |
609 | value = tps65912_reg_read(mfd, reg); | |
610 | value &= 0xC0; | |
611 | return tps65912_reg_write(mfd, reg, selector | value); | |
612 | } | |
613 | ||
614 | static int tps65912_list_voltage_dcdc(struct regulator_dev *dev, | |
615 | unsigned selector) | |
616 | { | |
617 | struct tps65912_reg *pmic = rdev_get_drvdata(dev); | |
618 | int range, voltage = 0, id = rdev_get_id(dev); | |
619 | ||
620 | switch (id) { | |
621 | case TPS65912_REG_DCDC1: | |
622 | range = pmic->dcdc1_range; | |
623 | break; | |
624 | case TPS65912_REG_DCDC2: | |
625 | range = pmic->dcdc2_range; | |
626 | break; | |
627 | case TPS65912_REG_DCDC3: | |
628 | range = pmic->dcdc3_range; | |
629 | break; | |
630 | case TPS65912_REG_DCDC4: | |
631 | range = pmic->dcdc4_range; | |
632 | break; | |
633 | default: | |
634 | return -EINVAL; | |
635 | } | |
636 | ||
637 | switch (range) { | |
638 | case 0: | |
639 | /* 0.5 - 1.2875V in 12.5mV steps */ | |
640 | voltage = tps65912_vsel_to_uv_range0(selector); | |
641 | break; | |
642 | case 1: | |
643 | /* 0.7 - 1.4875V in 12.5mV steps */ | |
644 | voltage = tps65912_vsel_to_uv_range1(selector); | |
645 | break; | |
646 | case 2: | |
647 | /* 0.5 - 2.075V in 25mV steps */ | |
648 | voltage = tps65912_vsel_to_uv_range2(selector); | |
649 | break; | |
650 | case 3: | |
651 | /* 0.5 - 3.8V in 50mV steps */ | |
652 | voltage = tps65912_vsel_to_uv_range3(selector); | |
653 | break; | |
654 | } | |
655 | return voltage; | |
656 | } | |
657 | ||
658 | static int tps65912_list_voltage_ldo(struct regulator_dev *dev, | |
659 | unsigned selector) | |
660 | { | |
661 | int ldo = rdev_get_id(dev); | |
662 | ||
663 | if (ldo < TPS65912_REG_LDO1 || ldo > TPS65912_REG_LDO10) | |
664 | return -EINVAL; | |
665 | ||
666 | return tps65912_vsel_to_uv_ldo(selector); | |
667 | } | |
668 | ||
669 | /* Operations permitted on DCDCx */ | |
670 | static struct regulator_ops tps65912_ops_dcdc = { | |
671 | .is_enabled = tps65912_reg_is_enabled, | |
672 | .enable = tps65912_reg_enable, | |
673 | .disable = tps65912_reg_disable, | |
674 | .set_mode = tps65912_set_mode, | |
675 | .get_mode = tps65912_get_mode, | |
676 | .get_voltage = tps65912_get_voltage_dcdc, | |
677 | .set_voltage_sel = tps65912_set_voltage_dcdc, | |
678 | .list_voltage = tps65912_list_voltage_dcdc, | |
679 | }; | |
680 | ||
681 | /* Operations permitted on LDOx */ | |
682 | static struct regulator_ops tps65912_ops_ldo = { | |
683 | .is_enabled = tps65912_reg_is_enabled, | |
684 | .enable = tps65912_reg_enable, | |
685 | .disable = tps65912_reg_disable, | |
686 | .get_voltage = tps65912_get_voltage_ldo, | |
687 | .set_voltage_sel = tps65912_set_voltage_ldo, | |
688 | .list_voltage = tps65912_list_voltage_ldo, | |
689 | }; | |
690 | ||
691 | static __devinit int tps65912_probe(struct platform_device *pdev) | |
692 | { | |
693 | struct tps65912 *tps65912 = dev_get_drvdata(pdev->dev.parent); | |
694 | struct tps_info *info; | |
695 | struct regulator_init_data *reg_data; | |
696 | struct regulator_dev *rdev; | |
697 | struct tps65912_reg *pmic; | |
698 | struct tps65912_board *pmic_plat_data; | |
699 | int i, err; | |
700 | ||
701 | pmic_plat_data = dev_get_platdata(tps65912->dev); | |
702 | if (!pmic_plat_data) | |
703 | return -EINVAL; | |
704 | ||
705 | reg_data = pmic_plat_data->tps65912_pmic_init_data; | |
706 | ||
707 | pmic = kzalloc(sizeof(*pmic), GFP_KERNEL); | |
708 | if (!pmic) | |
709 | return -ENOMEM; | |
710 | ||
711 | mutex_init(&pmic->io_lock); | |
712 | pmic->mfd = tps65912; | |
713 | platform_set_drvdata(pdev, pmic); | |
714 | ||
715 | pmic->get_ctrl_reg = &tps65912_get_ctrl_register; | |
716 | info = tps65912_regs; | |
717 | ||
718 | for (i = 0; i < TPS65912_NUM_REGULATOR; i++, info++, reg_data++) { | |
719 | int range = 0; | |
720 | /* Register the regulators */ | |
721 | pmic->info[i] = info; | |
722 | ||
723 | pmic->desc[i].name = info->name; | |
724 | pmic->desc[i].id = i; | |
725 | pmic->desc[i].n_voltages = 64; | |
726 | pmic->desc[i].ops = (i > TPS65912_REG_DCDC4 ? | |
727 | &tps65912_ops_ldo : &tps65912_ops_dcdc); | |
728 | pmic->desc[i].type = REGULATOR_VOLTAGE; | |
729 | pmic->desc[i].owner = THIS_MODULE; | |
730 | range = tps65912_get_range(pmic, i); | |
731 | rdev = regulator_register(&pmic->desc[i], | |
732 | tps65912->dev, reg_data, pmic); | |
733 | if (IS_ERR(rdev)) { | |
734 | dev_err(tps65912->dev, | |
735 | "failed to register %s regulator\n", | |
736 | pdev->name); | |
737 | err = PTR_ERR(rdev); | |
738 | goto err; | |
739 | } | |
740 | ||
741 | /* Save regulator for cleanup */ | |
742 | pmic->rdev[i] = rdev; | |
743 | } | |
744 | return 0; | |
745 | ||
746 | err: | |
747 | while (--i >= 0) | |
748 | regulator_unregister(pmic->rdev[i]); | |
749 | ||
750 | kfree(pmic); | |
751 | return err; | |
752 | } | |
753 | ||
754 | static int __devexit tps65912_remove(struct platform_device *pdev) | |
755 | { | |
756 | struct tps65912_reg *tps65912_reg = platform_get_drvdata(pdev); | |
757 | int i; | |
758 | ||
759 | for (i = 0; i < TPS65912_NUM_REGULATOR; i++) | |
760 | regulator_unregister(tps65912_reg->rdev[i]); | |
761 | ||
762 | kfree(tps65912_reg); | |
763 | return 0; | |
764 | } | |
765 | ||
766 | static struct platform_driver tps65912_driver = { | |
767 | .driver = { | |
768 | .name = "tps65912-pmic", | |
769 | .owner = THIS_MODULE, | |
770 | }, | |
771 | .probe = tps65912_probe, | |
772 | .remove = __devexit_p(tps65912_remove), | |
773 | }; | |
774 | ||
775 | /** | |
776 | * tps65912_init | |
777 | * | |
778 | * Module init function | |
779 | */ | |
780 | static int __init tps65912_init(void) | |
781 | { | |
782 | return platform_driver_register(&tps65912_driver); | |
783 | } | |
784 | subsys_initcall(tps65912_init); | |
785 | ||
786 | /** | |
787 | * tps65912_cleanup | |
788 | * | |
789 | * Module exit function | |
790 | */ | |
791 | static void __exit tps65912_cleanup(void) | |
792 | { | |
793 | platform_driver_unregister(&tps65912_driver); | |
794 | } | |
795 | module_exit(tps65912_cleanup); | |
796 | ||
797 | MODULE_AUTHOR("Margarita Olaya Cabrera <magi@slimlogic.co.uk>"); | |
798 | MODULE_DESCRIPTION("TPS65912 voltage regulator driver"); | |
799 | MODULE_LICENSE("GPL v2"); | |
800 | MODULE_ALIAS("platform:tps65912-pmic"); |