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