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Staging: vt6655: Makefile: cleaned up Makefile cflag lines
[wandboard.git] / drivers / regulator / mc13783-regulator.c
blob4597d508a229efe5bb12a985955ebb71931e3ee4
1 /*
2 * Regulator Driver for Freescale MC13783 PMIC
3 *
4 * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
5 * Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/mfd/mc13783.h>
13 #include <linux/regulator/machine.h>
14 #include <linux/regulator/driver.h>
15 #include <linux/platform_device.h>
16 #include <linux/kernel.h>
17 #include <linux/slab.h>
18 #include <linux/init.h>
19 #include <linux/err.h>
20
21 #define MC13783_REG_SWITCHERS5 29
22 #define MC13783_REG_SWITCHERS5_SW3EN (1 << 20)
23 #define MC13783_REG_SWITCHERS5_SW3VSEL 18
24 #define MC13783_REG_SWITCHERS5_SW3VSEL_M (3 << 18)
25
26 #define MC13783_REG_REGULATORSETTING0 30
27 #define MC13783_REG_REGULATORSETTING0_VIOLOVSEL 2
28 #define MC13783_REG_REGULATORSETTING0_VDIGVSEL 4
29 #define MC13783_REG_REGULATORSETTING0_VGENVSEL 6
30 #define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL 9
31 #define MC13783_REG_REGULATORSETTING0_VRFREFVSEL 11
32 #define MC13783_REG_REGULATORSETTING0_VRFCPVSEL 13
33 #define MC13783_REG_REGULATORSETTING0_VSIMVSEL 14
34 #define MC13783_REG_REGULATORSETTING0_VESIMVSEL 15
35 #define MC13783_REG_REGULATORSETTING0_VCAMVSEL 16
36
37 #define MC13783_REG_REGULATORSETTING0_VIOLOVSEL_M (3 << 2)
38 #define MC13783_REG_REGULATORSETTING0_VDIGVSEL_M (3 << 4)
39 #define MC13783_REG_REGULATORSETTING0_VGENVSEL_M (7 << 6)
40 #define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL_M (3 << 9)
41 #define MC13783_REG_REGULATORSETTING0_VRFREFVSEL_M (3 << 11)
42 #define MC13783_REG_REGULATORSETTING0_VRFCPVSEL_M (1 << 13)
43 #define MC13783_REG_REGULATORSETTING0_VSIMVSEL_M (1 << 14)
44 #define MC13783_REG_REGULATORSETTING0_VESIMVSEL_M (1 << 15)
45 #define MC13783_REG_REGULATORSETTING0_VCAMVSEL_M (7 << 16)
46
47 #define MC13783_REG_REGULATORSETTING1 31
48 #define MC13783_REG_REGULATORSETTING1_VVIBVSEL 0
49 #define MC13783_REG_REGULATORSETTING1_VRF1VSEL 2
50 #define MC13783_REG_REGULATORSETTING1_VRF2VSEL 4
51 #define MC13783_REG_REGULATORSETTING1_VMMC1VSEL 6
52 #define MC13783_REG_REGULATORSETTING1_VMMC2VSEL 9
53
54 #define MC13783_REG_REGULATORSETTING1_VVIBVSEL_M (3 << 0)
55 #define MC13783_REG_REGULATORSETTING1_VRF1VSEL_M (3 << 2)
56 #define MC13783_REG_REGULATORSETTING1_VRF2VSEL_M (3 << 4)
57 #define MC13783_REG_REGULATORSETTING1_VMMC1VSEL_M (7 << 6)
58 #define MC13783_REG_REGULATORSETTING1_VMMC2VSEL_M (7 << 9)
59
60 #define MC13783_REG_REGULATORMODE0 32
61 #define MC13783_REG_REGULATORMODE0_VAUDIOEN (1 << 0)
62 #define MC13783_REG_REGULATORMODE0_VIOHIEN (1 << 3)
63 #define MC13783_REG_REGULATORMODE0_VIOLOEN (1 << 6)
64 #define MC13783_REG_REGULATORMODE0_VDIGEN (1 << 9)
65 #define MC13783_REG_REGULATORMODE0_VGENEN (1 << 12)
66 #define MC13783_REG_REGULATORMODE0_VRFDIGEN (1 << 15)
67 #define MC13783_REG_REGULATORMODE0_VRFREFEN (1 << 18)
68 #define MC13783_REG_REGULATORMODE0_VRFCPEN (1 << 21)
69
70 #define MC13783_REG_REGULATORMODE1 33
71 #define MC13783_REG_REGULATORMODE1_VSIMEN (1 << 0)
72 #define MC13783_REG_REGULATORMODE1_VESIMEN (1 << 3)
73 #define MC13783_REG_REGULATORMODE1_VCAMEN (1 << 6)
74 #define MC13783_REG_REGULATORMODE1_VRFBGEN (1 << 9)
75 #define MC13783_REG_REGULATORMODE1_VVIBEN (1 << 11)
76 #define MC13783_REG_REGULATORMODE1_VRF1EN (1 << 12)
77 #define MC13783_REG_REGULATORMODE1_VRF2EN (1 << 15)
78 #define MC13783_REG_REGULATORMODE1_VMMC1EN (1 << 18)
79 #define MC13783_REG_REGULATORMODE1_VMMC2EN (1 << 21)
80
81 #define MC13783_REG_POWERMISC 34
82 #define MC13783_REG_POWERMISC_GPO1EN (1 << 6)
83 #define MC13783_REG_POWERMISC_GPO2EN (1 << 8)
84 #define MC13783_REG_POWERMISC_GPO3EN (1 << 10)
85 #define MC13783_REG_POWERMISC_GPO4EN (1 << 12)
86 #define MC13783_REG_POWERMISC_PWGT1SPIEN (1 << 15)
87 #define MC13783_REG_POWERMISC_PWGT2SPIEN (1 << 16)
88
89 #define MC13783_REG_POWERMISC_PWGTSPI_M (3 << 15)
90
91
92 struct mc13783_regulator {
93 struct regulator_desc desc;
94 int reg;
95 int enable_bit;
96 int vsel_reg;
97 int vsel_shift;
98 int vsel_mask;
99 int const *voltages;
100 };
101
102 /* Voltage Values */
103 static const int const mc13783_sw3_val[] = {
104 5000000, 5000000, 5000000, 5500000,
105 };
106
107 static const int const mc13783_vaudio_val[] = {
108 2775000,
109 };
110
111 static const int const mc13783_viohi_val[] = {
112 2775000,
113 };
114
115 static const int const mc13783_violo_val[] = {
116 1200000, 1300000, 1500000, 1800000,
117 };
118
119 static const int const mc13783_vdig_val[] = {
120 1200000, 1300000, 1500000, 1800000,
121 };
122
123 static const int const mc13783_vgen_val[] = {
124 1200000, 1300000, 1500000, 1800000,
125 1100000, 2000000, 2775000, 2400000,
126 };
127
128 static const int const mc13783_vrfdig_val[] = {
129 1200000, 1500000, 1800000, 1875000,
130 };
131
132 static const int const mc13783_vrfref_val[] = {
133 2475000, 2600000, 2700000, 2775000,
134 };
135
136 static const int const mc13783_vrfcp_val[] = {
137 2700000, 2775000,
138 };
139
140 static const int const mc13783_vsim_val[] = {
141 1800000, 2900000, 3000000,
142 };
143
144 static const int const mc13783_vesim_val[] = {
145 1800000, 2900000,
146 };
147
148 static const int const mc13783_vcam_val[] = {
149 1500000, 1800000, 2500000, 2550000,
150 2600000, 2750000, 2800000, 3000000,
151 };
152
153 static const int const mc13783_vrfbg_val[] = {
154 1250000,
155 };
156
157 static const int const mc13783_vvib_val[] = {
158 1300000, 1800000, 2000000, 3000000,
159 };
160
161 static const int const mc13783_vmmc_val[] = {
162 1600000, 1800000, 2000000, 2600000,
163 2700000, 2800000, 2900000, 3000000,
164 };
165
166 static const int const mc13783_vrf_val[] = {
167 1500000, 1875000, 2700000, 2775000,
168 };
169
170 static const int const mc13783_gpo_val[] = {
171 3100000,
172 };
173
174 static const int const mc13783_pwgtdrv_val[] = {
175 5500000,
176 };
177
178 static struct regulator_ops mc13783_regulator_ops;
179 static struct regulator_ops mc13783_fixed_regulator_ops;
180 static struct regulator_ops mc13783_gpo_regulator_ops;
181
182 #define MC13783_DEFINE(prefix, _name, _reg, _vsel_reg, _voltages) \
183 [MC13783_ ## prefix ## _ ## _name] = { \
184 .desc = { \
185 .name = #prefix "_" #_name, \
186 .n_voltages = ARRAY_SIZE(_voltages), \
187 .ops = &mc13783_regulator_ops, \
188 .type = REGULATOR_VOLTAGE, \
189 .id = MC13783_ ## prefix ## _ ## _name, \
190 .owner = THIS_MODULE, \
191 }, \
192 .reg = MC13783_REG_ ## _reg, \
193 .enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
194 .vsel_reg = MC13783_REG_ ## _vsel_reg, \
195 .vsel_shift = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL,\
196 .vsel_mask = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL_M,\
197 .voltages = _voltages, \
198 }
199
200 #define MC13783_FIXED_DEFINE(prefix, _name, _reg, _voltages) \
201 [MC13783_ ## prefix ## _ ## _name] = { \
202 .desc = { \
203 .name = #prefix "_" #_name, \
204 .n_voltages = ARRAY_SIZE(_voltages), \
205 .ops = &mc13783_fixed_regulator_ops, \
206 .type = REGULATOR_VOLTAGE, \
207 .id = MC13783_ ## prefix ## _ ## _name, \
208 .owner = THIS_MODULE, \
209 }, \
210 .reg = MC13783_REG_ ## _reg, \
211 .enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
212 .voltages = _voltages, \
213 }
214
215 #define MC13783_GPO_DEFINE(prefix, _name, _reg, _voltages) \
216 [MC13783_ ## prefix ## _ ## _name] = { \
217 .desc = { \
218 .name = #prefix "_" #_name, \
219 .n_voltages = ARRAY_SIZE(_voltages), \
220 .ops = &mc13783_gpo_regulator_ops, \
221 .type = REGULATOR_VOLTAGE, \
222 .id = MC13783_ ## prefix ## _ ## _name, \
223 .owner = THIS_MODULE, \
224 }, \
225 .reg = MC13783_REG_ ## _reg, \
226 .enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
227 .voltages = _voltages, \
228 }
229
230 #define MC13783_DEFINE_SW(_name, _reg, _vsel_reg, _voltages) \
231 MC13783_DEFINE(SW, _name, _reg, _vsel_reg, _voltages)
232 #define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages) \
233 MC13783_DEFINE(REGU, _name, _reg, _vsel_reg, _voltages)
234
235 static struct mc13783_regulator mc13783_regulators[] = {
236 MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val),
237
238 MC13783_FIXED_DEFINE(REGU, VAUDIO, REGULATORMODE0, mc13783_vaudio_val),
239 MC13783_FIXED_DEFINE(REGU, VIOHI, REGULATORMODE0, mc13783_viohi_val),
240 MC13783_DEFINE_REGU(VIOLO, REGULATORMODE0, REGULATORSETTING0, \
241 mc13783_violo_val),
242 MC13783_DEFINE_REGU(VDIG, REGULATORMODE0, REGULATORSETTING0, \
243 mc13783_vdig_val),
244 MC13783_DEFINE_REGU(VGEN, REGULATORMODE0, REGULATORSETTING0, \
245 mc13783_vgen_val),
246 MC13783_DEFINE_REGU(VRFDIG, REGULATORMODE0, REGULATORSETTING0, \
247 mc13783_vrfdig_val),
248 MC13783_DEFINE_REGU(VRFREF, REGULATORMODE0, REGULATORSETTING0, \
249 mc13783_vrfref_val),
250 MC13783_DEFINE_REGU(VRFCP, REGULATORMODE0, REGULATORSETTING0, \
251 mc13783_vrfcp_val),
252 MC13783_DEFINE_REGU(VSIM, REGULATORMODE1, REGULATORSETTING0, \
253 mc13783_vsim_val),
254 MC13783_DEFINE_REGU(VESIM, REGULATORMODE1, REGULATORSETTING0, \
255 mc13783_vesim_val),
256 MC13783_DEFINE_REGU(VCAM, REGULATORMODE1, REGULATORSETTING0, \
257 mc13783_vcam_val),
258 MC13783_FIXED_DEFINE(REGU, VRFBG, REGULATORMODE1, mc13783_vrfbg_val),
259 MC13783_DEFINE_REGU(VVIB, REGULATORMODE1, REGULATORSETTING1, \
260 mc13783_vvib_val),
261 MC13783_DEFINE_REGU(VRF1, REGULATORMODE1, REGULATORSETTING1, \
262 mc13783_vrf_val),
263 MC13783_DEFINE_REGU(VRF2, REGULATORMODE1, REGULATORSETTING1, \
264 mc13783_vrf_val),
265 MC13783_DEFINE_REGU(VMMC1, REGULATORMODE1, REGULATORSETTING1, \
266 mc13783_vmmc_val),
267 MC13783_DEFINE_REGU(VMMC2, REGULATORMODE1, REGULATORSETTING1, \
268 mc13783_vmmc_val),
269 MC13783_GPO_DEFINE(REGU, GPO1, POWERMISC, mc13783_gpo_val),
270 MC13783_GPO_DEFINE(REGU, GPO2, POWERMISC, mc13783_gpo_val),
271 MC13783_GPO_DEFINE(REGU, GPO3, POWERMISC, mc13783_gpo_val),
272 MC13783_GPO_DEFINE(REGU, GPO4, POWERMISC, mc13783_gpo_val),
273 MC13783_GPO_DEFINE(REGU, PWGT1SPI, POWERMISC, mc13783_pwgtdrv_val),
274 MC13783_GPO_DEFINE(REGU, PWGT2SPI, POWERMISC, mc13783_pwgtdrv_val),
275 };
276
277 struct mc13783_regulator_priv {
278 struct mc13783 *mc13783;
279 u32 powermisc_pwgt_state;
280 struct regulator_dev *regulators[];
281 };
282
283 static int mc13783_regulator_enable(struct regulator_dev *rdev)
284 {
285 struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
286 int id = rdev_get_id(rdev);
287 int ret;
288
289 dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
290
291 mc13783_lock(priv->mc13783);
292 ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
293 mc13783_regulators[id].enable_bit,
294 mc13783_regulators[id].enable_bit);
295 mc13783_unlock(priv->mc13783);
296
297 return ret;
298 }
299
300 static int mc13783_regulator_disable(struct regulator_dev *rdev)
301 {
302 struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
303 int id = rdev_get_id(rdev);
304 int ret;
305
306 dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
307
308 mc13783_lock(priv->mc13783);
309 ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
310 mc13783_regulators[id].enable_bit, 0);
311 mc13783_unlock(priv->mc13783);
312
313 return ret;
314 }
315
316 static int mc13783_regulator_is_enabled(struct regulator_dev *rdev)
317 {
318 struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
319 int ret, id = rdev_get_id(rdev);
320 unsigned int val;
321
322 mc13783_lock(priv->mc13783);
323 ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
324 mc13783_unlock(priv->mc13783);
325
326 if (ret)
327 return ret;
328
329 return (val & mc13783_regulators[id].enable_bit) != 0;
330 }
331
332 static int mc13783_regulator_list_voltage(struct regulator_dev *rdev,
333 unsigned selector)
334 {
335 int id = rdev_get_id(rdev);
336
337 if (selector >= mc13783_regulators[id].desc.n_voltages)
338 return -EINVAL;
339
340 return mc13783_regulators[id].voltages[selector];
341 }
342
343 static int mc13783_get_best_voltage_index(struct regulator_dev *rdev,
344 int min_uV, int max_uV)
345 {
346 int reg_id = rdev_get_id(rdev);
347 int i;
348 int bestmatch;
349 int bestindex;
350
351 /*
352 * Locate the minimum voltage fitting the criteria on
353 * this regulator. The switchable voltages are not
354 * in strict falling order so we need to check them
355 * all for the best match.
356 */
357 bestmatch = INT_MAX;
358 bestindex = -1;
359 for (i = 0; i < mc13783_regulators[reg_id].desc.n_voltages; i++) {
360 if (mc13783_regulators[reg_id].voltages[i] >= min_uV &&
361 mc13783_regulators[reg_id].voltages[i] < bestmatch) {
362 bestmatch = mc13783_regulators[reg_id].voltages[i];
363 bestindex = i;
364 }
365 }
366
367 if (bestindex < 0 || bestmatch > max_uV) {
368 dev_warn(&rdev->dev, "no possible value for %d<=x<=%d uV\n",
369 min_uV, max_uV);
370 return -EINVAL;
371 }
372 return bestindex;
373 }
374
375 static int mc13783_regulator_set_voltage(struct regulator_dev *rdev,
376 int min_uV, int max_uV)
377 {
378 struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
379 int value, id = rdev_get_id(rdev);
380 int ret;
381
382 dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
383 __func__, id, min_uV, max_uV);
384
385 /* Find the best index */
386 value = mc13783_get_best_voltage_index(rdev, min_uV, max_uV);
387 dev_dbg(rdev_get_dev(rdev), "%s best value: %d \n", __func__, value);
388 if (value < 0)
389 return value;
390
391 mc13783_lock(priv->mc13783);
392 ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].vsel_reg,
393 mc13783_regulators[id].vsel_mask,
394 value << mc13783_regulators[id].vsel_shift);
395 mc13783_unlock(priv->mc13783);
396
397 return ret;
398 }
399
400 static int mc13783_regulator_get_voltage(struct regulator_dev *rdev)
401 {
402 struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
403 int ret, id = rdev_get_id(rdev);
404 unsigned int val;
405
406 dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
407
408 mc13783_lock(priv->mc13783);
409 ret = mc13783_reg_read(priv->mc13783,
410 mc13783_regulators[id].vsel_reg, &val);
411 mc13783_unlock(priv->mc13783);
412
413 if (ret)
414 return ret;
415
416 val = (val & mc13783_regulators[id].vsel_mask)
417 >> mc13783_regulators[id].vsel_shift;
418
419 dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val);
420
421 BUG_ON(val < 0 || val > mc13783_regulators[id].desc.n_voltages);
422
423 return mc13783_regulators[id].voltages[val];
424 }
425
426 static struct regulator_ops mc13783_regulator_ops = {
427 .enable = mc13783_regulator_enable,
428 .disable = mc13783_regulator_disable,
429 .is_enabled = mc13783_regulator_is_enabled,
430 .list_voltage = mc13783_regulator_list_voltage,
431 .set_voltage = mc13783_regulator_set_voltage,
432 .get_voltage = mc13783_regulator_get_voltage,
433 };
434
435 static int mc13783_fixed_regulator_set_voltage(struct regulator_dev *rdev,
436 int min_uV, int max_uV)
437 {
438 int id = rdev_get_id(rdev);
439
440 dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
441 __func__, id, min_uV, max_uV);
442
443 if (min_uV >= mc13783_regulators[id].voltages[0] &&
444 max_uV <= mc13783_regulators[id].voltages[0])
445 return 0;
446 else
447 return -EINVAL;
448 }
449
450 static int mc13783_fixed_regulator_get_voltage(struct regulator_dev *rdev)
451 {
452 int id = rdev_get_id(rdev);
453
454 dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
455
456 return mc13783_regulators[id].voltages[0];
457 }
458
459 static struct regulator_ops mc13783_fixed_regulator_ops = {
460 .enable = mc13783_regulator_enable,
461 .disable = mc13783_regulator_disable,
462 .is_enabled = mc13783_regulator_is_enabled,
463 .list_voltage = mc13783_regulator_list_voltage,
464 .set_voltage = mc13783_fixed_regulator_set_voltage,
465 .get_voltage = mc13783_fixed_regulator_get_voltage,
466 };
467
468 int mc13783_powermisc_rmw(struct mc13783_regulator_priv *priv, u32 mask,
469 u32 val)
470 {
471 struct mc13783 *mc13783 = priv->mc13783;
472 int ret;
473 u32 valread;
474
475 BUG_ON(val & ~mask);
476
477 ret = mc13783_reg_read(mc13783, MC13783_REG_POWERMISC, &valread);
478 if (ret)
479 return ret;
480
481 /* Update the stored state for Power Gates. */
482 priv->powermisc_pwgt_state =
483 (priv->powermisc_pwgt_state & ~mask) | val;
484 priv->powermisc_pwgt_state &= MC13783_REG_POWERMISC_PWGTSPI_M;
485
486 /* Construct the new register value */
487 valread = (valread & ~mask) | val;
488 /* Overwrite the PWGTxEN with the stored version */
489 valread = (valread & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
490 priv->powermisc_pwgt_state;
491
492 return mc13783_reg_write(mc13783, MC13783_REG_POWERMISC, valread);
493 }
494
495 static int mc13783_gpo_regulator_enable(struct regulator_dev *rdev)
496 {
497 struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
498 int id = rdev_get_id(rdev);
499 int ret;
500 u32 en_val = mc13783_regulators[id].enable_bit;
501
502 dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
503
504 /* Power Gate enable value is 0 */
505 if (id == MC13783_REGU_PWGT1SPI ||
506 id == MC13783_REGU_PWGT2SPI)
507 en_val = 0;
508
509 mc13783_lock(priv->mc13783);
510 ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit,
511 en_val);
512 mc13783_unlock(priv->mc13783);
513
514 return ret;
515 }
516
517 static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev)
518 {
519 struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
520 int id = rdev_get_id(rdev);
521 int ret;
522 u32 dis_val = 0;
523
524 dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
525
526 /* Power Gate disable value is 1 */
527 if (id == MC13783_REGU_PWGT1SPI ||
528 id == MC13783_REGU_PWGT2SPI)
529 dis_val = mc13783_regulators[id].enable_bit;
530
531 mc13783_lock(priv->mc13783);
532 ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit,
533 dis_val);
534 mc13783_unlock(priv->mc13783);
535
536 return ret;
537 }
538
539 static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev)
540 {
541 struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
542 int ret, id = rdev_get_id(rdev);
543 unsigned int val;
544
545 mc13783_lock(priv->mc13783);
546 ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
547 mc13783_unlock(priv->mc13783);
548
549 if (ret)
550 return ret;
551
552 /* Power Gates state is stored in powermisc_pwgt_state
553 * where the meaning of bits is negated */
554 val = (val & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
555 (priv->powermisc_pwgt_state ^ MC13783_REG_POWERMISC_PWGTSPI_M);
556
557 return (val & mc13783_regulators[id].enable_bit) != 0;
558 }
559
560 static struct regulator_ops mc13783_gpo_regulator_ops = {
561 .enable = mc13783_gpo_regulator_enable,
562 .disable = mc13783_gpo_regulator_disable,
563 .is_enabled = mc13783_gpo_regulator_is_enabled,
564 .list_voltage = mc13783_regulator_list_voltage,
565 .set_voltage = mc13783_fixed_regulator_set_voltage,
566 .get_voltage = mc13783_fixed_regulator_get_voltage,
567 };
568
569 static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
570 {
571 struct mc13783_regulator_priv *priv;
572 struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent);
573 struct mc13783_regulator_platform_data *pdata =
574 dev_get_platdata(&pdev->dev);
575 struct mc13783_regulator_init_data *init_data;
576 int i, ret;
577
578 dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id);
579
580 priv = kzalloc(sizeof(*priv) +
581 pdata->num_regulators * sizeof(priv->regulators[0]),
582 GFP_KERNEL);
583 if (!priv)
584 return -ENOMEM;
585
586 priv->mc13783 = mc13783;
587
588 for (i = 0; i < pdata->num_regulators; i++) {
589 init_data = &pdata->regulators[i];
590 priv->regulators[i] = regulator_register(
591 &mc13783_regulators[init_data->id].desc,
592 &pdev->dev, init_data->init_data, priv);
593
594 if (IS_ERR(priv->regulators[i])) {
595 dev_err(&pdev->dev, "failed to register regulator %s\n",
596 mc13783_regulators[i].desc.name);
597 ret = PTR_ERR(priv->regulators[i]);
598 goto err;
599 }
600 }
601
602 platform_set_drvdata(pdev, priv);
603
604 return 0;
605 err:
606 while (--i >= 0)
607 regulator_unregister(priv->regulators[i]);
608
609 kfree(priv);
610
611 return ret;
612 }
613
614 static int __devexit mc13783_regulator_remove(struct platform_device *pdev)
615 {
616 struct mc13783_regulator_priv *priv = platform_get_drvdata(pdev);
617 struct mc13783_regulator_platform_data *pdata =
618 dev_get_platdata(&pdev->dev);
619 int i;
620
621 platform_set_drvdata(pdev, NULL);
622
623 for (i = 0; i < pdata->num_regulators; i++)
624 regulator_unregister(priv->regulators[i]);
625
626 kfree(priv);
627 return 0;
628 }
629
630 static struct platform_driver mc13783_regulator_driver = {
631 .driver = {
632 .name = "mc13783-regulator",
633 .owner = THIS_MODULE,
634 },
635 .remove = __devexit_p(mc13783_regulator_remove),
636 .probe = mc13783_regulator_probe,
637 };
638
639 static int __init mc13783_regulator_init(void)
640 {
641 return platform_driver_register(&mc13783_regulator_driver);
642 }
643 subsys_initcall(mc13783_regulator_init);
644
645 static void __exit mc13783_regulator_exit(void)
646 {
647 platform_driver_unregister(&mc13783_regulator_driver);
648 }
649 module_exit(mc13783_regulator_exit);
650
651 MODULE_LICENSE("GPL v2");
652 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
653 MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");
654 MODULE_ALIAS("platform:mc13783-regulator");
WandBoard kernel