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12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/err.h>
15#include <linux/platform_device.h>
16#include <linux/regulator/driver.h>
17#include <linux/regulator/machine.h>
18#include <linux/mfd/da903x.h>
19
20
21#define DA9030_INVAL (-1)
22#define DA9030_LDO1011 (0x10)
23#define DA9030_LDO15 (0x11)
24#define DA9030_LDO1416 (0x12)
25#define DA9030_LDO1819 (0x13)
26#define DA9030_LDO17 (0x14)
27#define DA9030_BUCK2DVM1 (0x15)
28#define DA9030_BUCK2DVM2 (0x16)
29#define DA9030_RCTL11 (0x17)
30#define DA9030_RCTL21 (0x18)
31#define DA9030_LDO1 (0x90)
32#define DA9030_LDO23 (0x91)
33#define DA9030_LDO45 (0x92)
34#define DA9030_LDO6 (0x93)
35#define DA9030_LDO78 (0x94)
36#define DA9030_LDO912 (0x95)
37#define DA9030_BUCK (0x96)
38#define DA9030_RCTL12 (0x97)
39#define DA9030_RCTL22 (0x98)
40#define DA9030_LDO_UNLOCK (0xa0)
41#define DA9030_LDO_UNLOCK_MASK (0xe0)
42#define DA9034_OVER1 (0x10)
43
44
45#define DA9034_INVAL (-1)
46#define DA9034_OVER2 (0x11)
47#define DA9034_OVER3 (0x12)
48#define DA9034_LDO643 (0x13)
49#define DA9034_LDO987 (0x14)
50#define DA9034_LDO1110 (0x15)
51#define DA9034_LDO1312 (0x16)
52#define DA9034_LDO1514 (0x17)
53#define DA9034_VCC1 (0x20)
54#define DA9034_ADTV1 (0x23)
55#define DA9034_ADTV2 (0x24)
56#define DA9034_AVRC (0x25)
57#define DA9034_CDTV1 (0x26)
58#define DA9034_CDTV2 (0x27)
59#define DA9034_CVRC (0x28)
60#define DA9034_SDTV1 (0x29)
61#define DA9034_SDTV2 (0x2a)
62#define DA9034_SVRC (0x2b)
63#define DA9034_MDTV1 (0x32)
64#define DA9034_MDTV2 (0x33)
65#define DA9034_MVRC (0x34)
66
67
68#define DA9035_OVER3 (0x12)
69#define DA9035_VCC2 (0x1f)
70#define DA9035_3DTV1 (0x2c)
71#define DA9035_3DTV2 (0x2d)
72#define DA9035_3VRC (0x2e)
73#define DA9035_AUTOSKIP (0x2f)
74
75struct da903x_regulator_info {
76 struct regulator_desc desc;
77
78 int min_uV;
79 int max_uV;
80 int step_uV;
81 int vol_reg;
82 int vol_shift;
83 int vol_nbits;
84 int update_reg;
85 int update_bit;
86 int enable_reg;
87 int enable_bit;
88};
89
90static int da9034_ldo12_data[] = { 1700, 1750, 1800, 1850, 1900, 1950,
91 2000, 2050, 2700, 2750, 2800, 2850,
92 2900, 2950, 3000, 3050 };
93
94static inline struct device *to_da903x_dev(struct regulator_dev *rdev)
95{
96 return rdev_get_dev(rdev)->parent->parent;
97}
98
99static inline int check_range(struct da903x_regulator_info *info,
100 int min_uV, int max_uV)
101{
102 if (min_uV < info->min_uV || min_uV > info->max_uV)
103 return -EINVAL;
104
105 return 0;
106}
107
108
109static int da903x_set_ldo_voltage(struct regulator_dev *rdev,
110 int min_uV, int max_uV)
111{
112 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
113 struct device *da9034_dev = to_da903x_dev(rdev);
114 uint8_t val, mask;
115
116 if (check_range(info, min_uV, max_uV)) {
117 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
118 return -EINVAL;
119 }
120
121 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
122 val <<= info->vol_shift;
123 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
124
125 return da903x_update(da9034_dev, info->vol_reg, val, mask);
126}
127
128static int da903x_get_voltage(struct regulator_dev *rdev)
129{
130 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
131 struct device *da9034_dev = to_da903x_dev(rdev);
132 uint8_t val, mask;
133 int ret;
134
135 ret = da903x_read(da9034_dev, info->vol_reg, &val);
136 if (ret)
137 return ret;
138
139 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
140 val = (val & mask) >> info->vol_shift;
141
142 return info->min_uV + info->step_uV * val;
143}
144
145static int da903x_enable(struct regulator_dev *rdev)
146{
147 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
148 struct device *da9034_dev = to_da903x_dev(rdev);
149
150 return da903x_set_bits(da9034_dev, info->enable_reg,
151 1 << info->enable_bit);
152}
153
154static int da903x_disable(struct regulator_dev *rdev)
155{
156 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
157 struct device *da9034_dev = to_da903x_dev(rdev);
158
159 return da903x_clr_bits(da9034_dev, info->enable_reg,
160 1 << info->enable_bit);
161}
162
163static int da903x_is_enabled(struct regulator_dev *rdev)
164{
165 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
166 struct device *da9034_dev = to_da903x_dev(rdev);
167 uint8_t reg_val;
168 int ret;
169
170 ret = da903x_read(da9034_dev, info->enable_reg, ®_val);
171 if (ret)
172 return ret;
173
174 return !!(reg_val & (1 << info->enable_bit));
175}
176
177static int da903x_list_voltage(struct regulator_dev *rdev, unsigned selector)
178{
179 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
180 int ret;
181
182 ret = info->min_uV + info->step_uV * selector;
183 if (ret > info->max_uV)
184 return -EINVAL;
185 return ret;
186}
187
188
189static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
190 int min_uV, int max_uV)
191{
192 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
193 struct device *da903x_dev = to_da903x_dev(rdev);
194 uint8_t val, mask;
195 int ret;
196
197 if (check_range(info, min_uV, max_uV)) {
198 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
199 return -EINVAL;
200 }
201
202 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
203 val <<= info->vol_shift;
204 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
205 val |= DA9030_LDO_UNLOCK;
206 mask |= DA9030_LDO_UNLOCK_MASK;
207
208
209 ret = da903x_update(da903x_dev, info->vol_reg, val, mask);
210 if (ret)
211 return ret;
212
213 return da903x_update(da903x_dev, info->vol_reg, val, mask);
214}
215
216static int da9030_set_ldo14_voltage(struct regulator_dev *rdev,
217 int min_uV, int max_uV)
218{
219 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
220 struct device *da903x_dev = to_da903x_dev(rdev);
221 uint8_t val, mask;
222 int thresh;
223
224 if (check_range(info, min_uV, max_uV)) {
225 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
226 return -EINVAL;
227 }
228
229 thresh = (info->max_uV + info->min_uV) / 2;
230 if (min_uV < thresh) {
231 val = (thresh - min_uV + info->step_uV - 1) / info->step_uV;
232 val |= 0x4;
233 } else {
234 val = (min_uV - thresh + info->step_uV - 1) / info->step_uV;
235 }
236
237 val <<= info->vol_shift;
238 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
239
240 return da903x_update(da903x_dev, info->vol_reg, val, mask);
241}
242
243static int da9030_get_ldo14_voltage(struct regulator_dev *rdev)
244{
245 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
246 struct device *da903x_dev = to_da903x_dev(rdev);
247 uint8_t val, mask;
248 int ret;
249
250 ret = da903x_read(da903x_dev, info->vol_reg, &val);
251 if (ret)
252 return ret;
253
254 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
255 val = (val & mask) >> info->vol_shift;
256
257 if (val & 0x4)
258 return info->min_uV + info->step_uV * (3 - (val & ~0x4));
259 else
260 return (info->max_uV + info->min_uV) / 2 +
261 info->step_uV * (val & ~0x4);
262}
263
264
265static int da9034_set_dvc_voltage(struct regulator_dev *rdev,
266 int min_uV, int max_uV)
267{
268 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
269 struct device *da9034_dev = to_da903x_dev(rdev);
270 uint8_t val, mask;
271 int ret;
272
273 if (check_range(info, min_uV, max_uV)) {
274 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
275 return -EINVAL;
276 }
277
278 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
279 val <<= info->vol_shift;
280 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
281
282 ret = da903x_update(da9034_dev, info->vol_reg, val, mask);
283 if (ret)
284 return ret;
285
286 ret = da903x_set_bits(da9034_dev, info->update_reg,
287 1 << info->update_bit);
288 return ret;
289}
290
291static int da9034_set_ldo12_voltage(struct regulator_dev *rdev,
292 int min_uV, int max_uV)
293{
294 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
295 struct device *da9034_dev = to_da903x_dev(rdev);
296 uint8_t val, mask;
297
298 if (check_range(info, min_uV, max_uV)) {
299 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
300 return -EINVAL;
301 }
302
303 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
304 val = (val >= 20) ? val - 12 : ((val > 7) ? 8 : val);
305 val <<= info->vol_shift;
306 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
307
308 return da903x_update(da9034_dev, info->vol_reg, val, mask);
309}
310
311static int da9034_get_ldo12_voltage(struct regulator_dev *rdev)
312{
313 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
314 struct device *da9034_dev = to_da903x_dev(rdev);
315 uint8_t val, mask;
316 int ret;
317
318 ret = da903x_read(da9034_dev, info->vol_reg, &val);
319 if (ret)
320 return ret;
321
322 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
323 val = (val & mask) >> info->vol_shift;
324
325 if (val >= 8)
326 return 2700000 + info->step_uV * (val - 8);
327
328 return info->min_uV + info->step_uV * val;
329}
330
331static int da9034_list_ldo12_voltage(struct regulator_dev *rdev,
332 unsigned selector)
333{
334 if (selector > ARRAY_SIZE(da9034_ldo12_data))
335 return -EINVAL;
336 return da9034_ldo12_data[selector] * 1000;
337}
338
339static struct regulator_ops da903x_regulator_ldo_ops = {
340 .set_voltage = da903x_set_ldo_voltage,
341 .get_voltage = da903x_get_voltage,
342 .list_voltage = da903x_list_voltage,
343 .enable = da903x_enable,
344 .disable = da903x_disable,
345 .is_enabled = da903x_is_enabled,
346};
347
348
349static struct regulator_ops da9030_regulator_ldo14_ops = {
350 .set_voltage = da9030_set_ldo14_voltage,
351 .get_voltage = da9030_get_ldo14_voltage,
352 .list_voltage = da903x_list_voltage,
353 .enable = da903x_enable,
354 .disable = da903x_disable,
355 .is_enabled = da903x_is_enabled,
356};
357
358
359static struct regulator_ops da9030_regulator_ldo1_15_ops = {
360 .set_voltage = da9030_set_ldo1_15_voltage,
361 .get_voltage = da903x_get_voltage,
362 .list_voltage = da903x_list_voltage,
363 .enable = da903x_enable,
364 .disable = da903x_disable,
365 .is_enabled = da903x_is_enabled,
366};
367
368static struct regulator_ops da9034_regulator_dvc_ops = {
369 .set_voltage = da9034_set_dvc_voltage,
370 .get_voltage = da903x_get_voltage,
371 .list_voltage = da903x_list_voltage,
372 .enable = da903x_enable,
373 .disable = da903x_disable,
374 .is_enabled = da903x_is_enabled,
375};
376
377
378static struct regulator_ops da9034_regulator_ldo12_ops = {
379 .set_voltage = da9034_set_ldo12_voltage,
380 .get_voltage = da9034_get_ldo12_voltage,
381 .list_voltage = da9034_list_ldo12_voltage,
382 .enable = da903x_enable,
383 .disable = da903x_disable,
384 .is_enabled = da903x_is_enabled,
385};
386
387#define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \
388{ \
389 .desc = { \
390 .name = "LDO" #_id, \
391 .ops = &da903x_regulator_ldo_ops, \
392 .type = REGULATOR_VOLTAGE, \
393 .id = _pmic##_ID_LDO##_id, \
394 .n_voltages = (step) ? ((max - min) / step + 1) : 1, \
395 .owner = THIS_MODULE, \
396 }, \
397 .min_uV = (min) * 1000, \
398 .max_uV = (max) * 1000, \
399 .step_uV = (step) * 1000, \
400 .vol_reg = _pmic##_##vreg, \
401 .vol_shift = (shift), \
402 .vol_nbits = (nbits), \
403 .enable_reg = _pmic##_##ereg, \
404 .enable_bit = (ebit), \
405}
406
407#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
408{ \
409 .desc = { \
410 .name = #_id, \
411 .ops = &da9034_regulator_dvc_ops, \
412 .type = REGULATOR_VOLTAGE, \
413 .id = _pmic##_ID_##_id, \
414 .n_voltages = (step) ? ((max - min) / step + 1) : 1, \
415 .owner = THIS_MODULE, \
416 }, \
417 .min_uV = (min) * 1000, \
418 .max_uV = (max) * 1000, \
419 .step_uV = (step) * 1000, \
420 .vol_reg = _pmic##_##vreg, \
421 .vol_shift = (0), \
422 .vol_nbits = (nbits), \
423 .update_reg = _pmic##_##ureg, \
424 .update_bit = (ubit), \
425 .enable_reg = _pmic##_##ereg, \
426 .enable_bit = (ebit), \
427}
428
429#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
430 DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
431
432#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
433 DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
434
435#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
436 DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \
437 ereg, ebit)
438
439#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
440 DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \
441 ereg, ebit)
442
443#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
444 DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \
445 ereg, ebit)
446
447static struct da903x_regulator_info da903x_regulator_info[] = {
448
449 DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0),
450
451 DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1),
452 DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2),
453 DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3),
454 DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4),
455 DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5),
456 DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6),
457 DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7),
458 DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0),
459 DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1),
460 DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2),
461 DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3),
462 DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4),
463 DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4),
464 DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5),
465 DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6),
466 DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7),
467 DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2),
468 DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1),
469 DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3),
470
471
472 DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0),
473 DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1),
474 DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2),
475 DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),
476
477 DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5),
478 DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6),
479 DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0),
480 DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1),
481 DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2),
482 DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3),
483 DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4),
484 DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5),
485 DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6),
486 DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7),
487 DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),
488 DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),
489 DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7),
490
491
492 DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3),
493};
494
495static inline struct da903x_regulator_info *find_regulator_info(int id)
496{
497 struct da903x_regulator_info *ri;
498 int i;
499
500 for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) {
501 ri = &da903x_regulator_info[i];
502 if (ri->desc.id == id)
503 return ri;
504 }
505 return NULL;
506}
507
508static int __devinit da903x_regulator_probe(struct platform_device *pdev)
509{
510 struct da903x_regulator_info *ri = NULL;
511 struct regulator_dev *rdev;
512
513 ri = find_regulator_info(pdev->id);
514 if (ri == NULL) {
515 dev_err(&pdev->dev, "invalid regulator ID specified\n");
516 return -EINVAL;
517 }
518
519
520 if (ri->desc.id == DA9034_ID_LDO12) {
521 ri->desc.ops = &da9034_regulator_ldo12_ops;
522 ri->desc.n_voltages = ARRAY_SIZE(da9034_ldo12_data);
523 }
524
525 if (ri->desc.id == DA9030_ID_LDO14)
526 ri->desc.ops = &da9030_regulator_ldo14_ops;
527
528 if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15)
529 ri->desc.ops = &da9030_regulator_ldo1_15_ops;
530
531 rdev = regulator_register(&ri->desc, &pdev->dev,
532 pdev->dev.platform_data, ri);
533 if (IS_ERR(rdev)) {
534 dev_err(&pdev->dev, "failed to register regulator %s\n",
535 ri->desc.name);
536 return PTR_ERR(rdev);
537 }
538
539 platform_set_drvdata(pdev, rdev);
540 return 0;
541}
542
543static int __devexit da903x_regulator_remove(struct platform_device *pdev)
544{
545 struct regulator_dev *rdev = platform_get_drvdata(pdev);
546
547 regulator_unregister(rdev);
548 return 0;
549}
550
551static struct platform_driver da903x_regulator_driver = {
552 .driver = {
553 .name = "da903x-regulator",
554 .owner = THIS_MODULE,
555 },
556 .probe = da903x_regulator_probe,
557 .remove = __devexit_p(da903x_regulator_remove),
558};
559
560static int __init da903x_regulator_init(void)
561{
562 return platform_driver_register(&da903x_regulator_driver);
563}
564subsys_initcall(da903x_regulator_init);
565
566static void __exit da903x_regulator_exit(void)
567{
568 platform_driver_unregister(&da903x_regulator_driver);
569}
570module_exit(da903x_regulator_exit);
571
572MODULE_LICENSE("GPL");
573MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
574 "Mike Rapoport <mike@compulab.co.il>");
575MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC");
576MODULE_ALIAS("platform:da903x-regulator");
577
