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tps65910-regulator.c
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1 /*
2  * tps65910.c -- TI tps65910
3  *
4  * Copyright 2010 Texas Instruments Inc.
5  *
6  * Author: Graeme Gregory <[email protected]>
7  * Author: Jorge Eduardo Candelaria <[email protected]>
8  *
9  * This program is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU General Public License as published by the
11  * Free Software Foundation; either version 2 of the License, or (at your
12  * option) any later version.
13  *
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/slab.h>
24 #include <linux/gpio.h>
25 #include <linux/mfd/tps65910.h>
26 #include <linux/regulator/of_regulator.h>
27 
28 #define TPS65910_SUPPLY_STATE_ENABLED 0x1
29 #define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 | \
30  TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 | \
31  TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3 | \
32  TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
33 
34 /* supported VIO voltages in microvolts */
35 static const unsigned int VIO_VSEL_table[] = {
36  1500000, 1800000, 2500000, 3300000,
37 };
38 
39 /* VSEL tables for TPS65910 specific LDOs and dcdc's */
40 
41 /* supported VDD3 voltages in microvolts */
42 static const unsigned int VDD3_VSEL_table[] = {
43  5000000,
44 };
45 
46 /* supported VDIG1 voltages in microvolts */
47 static const unsigned int VDIG1_VSEL_table[] = {
48  1200000, 1500000, 1800000, 2700000,
49 };
50 
51 /* supported VDIG2 voltages in microvolts */
52 static const unsigned int VDIG2_VSEL_table[] = {
53  1000000, 1100000, 1200000, 1800000,
54 };
55 
56 /* supported VPLL voltages in microvolts */
57 static const unsigned int VPLL_VSEL_table[] = {
58  1000000, 1100000, 1800000, 2500000,
59 };
60 
61 /* supported VDAC voltages in microvolts */
62 static const unsigned int VDAC_VSEL_table[] = {
63  1800000, 2600000, 2800000, 2850000,
64 };
65 
66 /* supported VAUX1 voltages in microvolts */
67 static const unsigned int VAUX1_VSEL_table[] = {
68  1800000, 2500000, 2800000, 2850000,
69 };
70 
71 /* supported VAUX2 voltages in microvolts */
72 static const unsigned int VAUX2_VSEL_table[] = {
73  1800000, 2800000, 2900000, 3300000,
74 };
75 
76 /* supported VAUX33 voltages in microvolts */
77 static const unsigned int VAUX33_VSEL_table[] = {
78  1800000, 2000000, 2800000, 3300000,
79 };
80 
81 /* supported VMMC voltages in microvolts */
82 static const unsigned int VMMC_VSEL_table[] = {
83  1800000, 2800000, 3000000, 3300000,
84 };
85 
86 struct tps_info {
87  const char *name;
88  const char *vin_name;
89  u8 n_voltages;
90  const unsigned int *voltage_table;
91  int enable_time_us;
92 };
93 
94 static struct tps_info tps65910_regs[] = {
95  {
96  .name = "vrtc",
97  .vin_name = "vcc7",
98  .enable_time_us = 2200,
99  },
100  {
101  .name = "vio",
102  .vin_name = "vccio",
103  .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
104  .voltage_table = VIO_VSEL_table,
105  .enable_time_us = 350,
106  },
107  {
108  .name = "vdd1",
109  .vin_name = "vcc1",
110  .enable_time_us = 350,
111  },
112  {
113  .name = "vdd2",
114  .vin_name = "vcc2",
115  .enable_time_us = 350,
116  },
117  {
118  .name = "vdd3",
119  .n_voltages = ARRAY_SIZE(VDD3_VSEL_table),
120  .voltage_table = VDD3_VSEL_table,
121  .enable_time_us = 200,
122  },
123  {
124  .name = "vdig1",
125  .vin_name = "vcc6",
126  .n_voltages = ARRAY_SIZE(VDIG1_VSEL_table),
127  .voltage_table = VDIG1_VSEL_table,
128  .enable_time_us = 100,
129  },
130  {
131  .name = "vdig2",
132  .vin_name = "vcc6",
133  .n_voltages = ARRAY_SIZE(VDIG2_VSEL_table),
134  .voltage_table = VDIG2_VSEL_table,
135  .enable_time_us = 100,
136  },
137  {
138  .name = "vpll",
139  .vin_name = "vcc5",
140  .n_voltages = ARRAY_SIZE(VPLL_VSEL_table),
141  .voltage_table = VPLL_VSEL_table,
142  .enable_time_us = 100,
143  },
144  {
145  .name = "vdac",
146  .vin_name = "vcc5",
147  .n_voltages = ARRAY_SIZE(VDAC_VSEL_table),
148  .voltage_table = VDAC_VSEL_table,
149  .enable_time_us = 100,
150  },
151  {
152  .name = "vaux1",
153  .vin_name = "vcc4",
154  .n_voltages = ARRAY_SIZE(VAUX1_VSEL_table),
155  .voltage_table = VAUX1_VSEL_table,
156  .enable_time_us = 100,
157  },
158  {
159  .name = "vaux2",
160  .vin_name = "vcc4",
161  .n_voltages = ARRAY_SIZE(VAUX2_VSEL_table),
162  .voltage_table = VAUX2_VSEL_table,
163  .enable_time_us = 100,
164  },
165  {
166  .name = "vaux33",
167  .vin_name = "vcc3",
168  .n_voltages = ARRAY_SIZE(VAUX33_VSEL_table),
169  .voltage_table = VAUX33_VSEL_table,
170  .enable_time_us = 100,
171  },
172  {
173  .name = "vmmc",
174  .vin_name = "vcc3",
175  .n_voltages = ARRAY_SIZE(VMMC_VSEL_table),
176  .voltage_table = VMMC_VSEL_table,
177  .enable_time_us = 100,
178  },
179 };
180 
181 static struct tps_info tps65911_regs[] = {
182  {
183  .name = "vrtc",
184  .vin_name = "vcc7",
185  .enable_time_us = 2200,
186  },
187  {
188  .name = "vio",
189  .vin_name = "vccio",
190  .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
191  .voltage_table = VIO_VSEL_table,
192  .enable_time_us = 350,
193  },
194  {
195  .name = "vdd1",
196  .vin_name = "vcc1",
197  .n_voltages = 0x4C,
198  .enable_time_us = 350,
199  },
200  {
201  .name = "vdd2",
202  .vin_name = "vcc2",
203  .n_voltages = 0x4C,
204  .enable_time_us = 350,
205  },
206  {
207  .name = "vddctrl",
208  .n_voltages = 0x44,
209  .enable_time_us = 900,
210  },
211  {
212  .name = "ldo1",
213  .vin_name = "vcc6",
214  .n_voltages = 0x33,
215  .enable_time_us = 420,
216  },
217  {
218  .name = "ldo2",
219  .vin_name = "vcc6",
220  .n_voltages = 0x33,
221  .enable_time_us = 420,
222  },
223  {
224  .name = "ldo3",
225  .vin_name = "vcc5",
226  .n_voltages = 0x1A,
227  .enable_time_us = 230,
228  },
229  {
230  .name = "ldo4",
231  .vin_name = "vcc5",
232  .n_voltages = 0x33,
233  .enable_time_us = 230,
234  },
235  {
236  .name = "ldo5",
237  .vin_name = "vcc4",
238  .n_voltages = 0x1A,
239  .enable_time_us = 230,
240  },
241  {
242  .name = "ldo6",
243  .vin_name = "vcc3",
244  .n_voltages = 0x1A,
245  .enable_time_us = 230,
246  },
247  {
248  .name = "ldo7",
249  .vin_name = "vcc3",
250  .n_voltages = 0x1A,
251  .enable_time_us = 230,
252  },
253  {
254  .name = "ldo8",
255  .vin_name = "vcc3",
256  .n_voltages = 0x1A,
257  .enable_time_us = 230,
258  },
259 };
260 
261 #define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits))
262 static unsigned int tps65910_ext_sleep_control[] = {
263  0,
264  EXT_CONTROL_REG_BITS(VIO, 1, 0),
265  EXT_CONTROL_REG_BITS(VDD1, 1, 1),
266  EXT_CONTROL_REG_BITS(VDD2, 1, 2),
267  EXT_CONTROL_REG_BITS(VDD3, 1, 3),
268  EXT_CONTROL_REG_BITS(VDIG1, 0, 1),
269  EXT_CONTROL_REG_BITS(VDIG2, 0, 2),
270  EXT_CONTROL_REG_BITS(VPLL, 0, 6),
271  EXT_CONTROL_REG_BITS(VDAC, 0, 7),
272  EXT_CONTROL_REG_BITS(VAUX1, 0, 3),
273  EXT_CONTROL_REG_BITS(VAUX2, 0, 4),
274  EXT_CONTROL_REG_BITS(VAUX33, 0, 5),
275  EXT_CONTROL_REG_BITS(VMMC, 0, 0),
276 };
277 
278 static unsigned int tps65911_ext_sleep_control[] = {
279  0,
280  EXT_CONTROL_REG_BITS(VIO, 1, 0),
281  EXT_CONTROL_REG_BITS(VDD1, 1, 1),
282  EXT_CONTROL_REG_BITS(VDD2, 1, 2),
283  EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3),
284  EXT_CONTROL_REG_BITS(LDO1, 0, 1),
285  EXT_CONTROL_REG_BITS(LDO2, 0, 2),
286  EXT_CONTROL_REG_BITS(LDO3, 0, 7),
287  EXT_CONTROL_REG_BITS(LDO4, 0, 6),
288  EXT_CONTROL_REG_BITS(LDO5, 0, 3),
289  EXT_CONTROL_REG_BITS(LDO6, 0, 0),
290  EXT_CONTROL_REG_BITS(LDO7, 0, 5),
291  EXT_CONTROL_REG_BITS(LDO8, 0, 4),
292 };
293 
294 struct tps65910_reg {
295  struct regulator_desc *desc;
296  struct tps65910 *mfd;
297  struct regulator_dev **rdev;
298  struct tps_info **info;
299  int num_regulators;
300  int mode;
301  int (*get_ctrl_reg)(int);
302  unsigned int *ext_sleep_control;
303  unsigned int board_ext_control[TPS65910_NUM_REGS];
304 };
305 
306 static int tps65910_get_ctrl_register(int id)
307 {
308  switch (id) {
309  case TPS65910_REG_VRTC:
310  return TPS65910_VRTC;
311  case TPS65910_REG_VIO:
312  return TPS65910_VIO;
313  case TPS65910_REG_VDD1:
314  return TPS65910_VDD1;
315  case TPS65910_REG_VDD2:
316  return TPS65910_VDD2;
317  case TPS65910_REG_VDD3:
318  return TPS65910_VDD3;
319  case TPS65910_REG_VDIG1:
320  return TPS65910_VDIG1;
321  case TPS65910_REG_VDIG2:
322  return TPS65910_VDIG2;
323  case TPS65910_REG_VPLL:
324  return TPS65910_VPLL;
325  case TPS65910_REG_VDAC:
326  return TPS65910_VDAC;
327  case TPS65910_REG_VAUX1:
328  return TPS65910_VAUX1;
329  case TPS65910_REG_VAUX2:
330  return TPS65910_VAUX2;
331  case TPS65910_REG_VAUX33:
332  return TPS65910_VAUX33;
333  case TPS65910_REG_VMMC:
334  return TPS65910_VMMC;
335  default:
336  return -EINVAL;
337  }
338 }
339 
340 static int tps65911_get_ctrl_register(int id)
341 {
342  switch (id) {
343  case TPS65910_REG_VRTC:
344  return TPS65910_VRTC;
345  case TPS65910_REG_VIO:
346  return TPS65910_VIO;
347  case TPS65910_REG_VDD1:
348  return TPS65910_VDD1;
349  case TPS65910_REG_VDD2:
350  return TPS65910_VDD2;
351  case TPS65911_REG_VDDCTRL:
352  return TPS65911_VDDCTRL;
353  case TPS65911_REG_LDO1:
354  return TPS65911_LDO1;
355  case TPS65911_REG_LDO2:
356  return TPS65911_LDO2;
357  case TPS65911_REG_LDO3:
358  return TPS65911_LDO3;
359  case TPS65911_REG_LDO4:
360  return TPS65911_LDO4;
361  case TPS65911_REG_LDO5:
362  return TPS65911_LDO5;
363  case TPS65911_REG_LDO6:
364  return TPS65911_LDO6;
365  case TPS65911_REG_LDO7:
366  return TPS65911_LDO7;
367  case TPS65911_REG_LDO8:
368  return TPS65911_LDO8;
369  default:
370  return -EINVAL;
371  }
372 }
373 
374 static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
375 {
376  struct tps65910_reg *pmic = rdev_get_drvdata(dev);
377  struct tps65910 *mfd = pmic->mfd;
378  int reg, value, id = rdev_get_id(dev);
379 
380  reg = pmic->get_ctrl_reg(id);
381  if (reg < 0)
382  return reg;
383 
384  switch (mode) {
385  case REGULATOR_MODE_NORMAL:
386  return tps65910_reg_update_bits(pmic->mfd, reg,
387  LDO_ST_MODE_BIT | LDO_ST_ON_BIT,
388  LDO_ST_ON_BIT);
389  case REGULATOR_MODE_IDLE:
390  value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
391  return tps65910_reg_set_bits(mfd, reg, value);
392  case REGULATOR_MODE_STANDBY:
393  return tps65910_reg_clear_bits(mfd, reg, LDO_ST_ON_BIT);
394  }
395 
396  return -EINVAL;
397 }
398 
399 static unsigned int tps65910_get_mode(struct regulator_dev *dev)
400 {
401  struct tps65910_reg *pmic = rdev_get_drvdata(dev);
402  int ret, reg, value, id = rdev_get_id(dev);
403 
404  reg = pmic->get_ctrl_reg(id);
405  if (reg < 0)
406  return reg;
407 
408  ret = tps65910_reg_read(pmic->mfd, reg, &value);
409  if (ret < 0)
410  return ret;
411 
412  if (!(value & LDO_ST_ON_BIT))
413  return REGULATOR_MODE_STANDBY;
414  else if (value & LDO_ST_MODE_BIT)
415  return REGULATOR_MODE_IDLE;
416  else
417  return REGULATOR_MODE_NORMAL;
418 }
419 
420 static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev)
421 {
422  struct tps65910_reg *pmic = rdev_get_drvdata(dev);
423  int ret, id = rdev_get_id(dev);
424  int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0;
425 
426  switch (id) {
427  case TPS65910_REG_VDD1:
428  ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_OP, &opvsel);
429  if (ret < 0)
430  return ret;
431  ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1, &mult);
432  if (ret < 0)
433  return ret;
434  mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
435  ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_SR, &srvsel);
436  if (ret < 0)
437  return ret;
438  sr = opvsel & VDD1_OP_CMD_MASK;
439  opvsel &= VDD1_OP_SEL_MASK;
440  srvsel &= VDD1_SR_SEL_MASK;
441  vselmax = 75;
442  break;
443  case TPS65910_REG_VDD2:
444  ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_OP, &opvsel);
445  if (ret < 0)
446  return ret;
447  ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2, &mult);
448  if (ret < 0)
449  return ret;
450  mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
451  ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_SR, &srvsel);
452  if (ret < 0)
453  return ret;
454  sr = opvsel & VDD2_OP_CMD_MASK;
455  opvsel &= VDD2_OP_SEL_MASK;
456  srvsel &= VDD2_SR_SEL_MASK;
457  vselmax = 75;
458  break;
459  case TPS65911_REG_VDDCTRL:
460  ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_OP,
461  &opvsel);
462  if (ret < 0)
463  return ret;
464  ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_SR,
465  &srvsel);
466  if (ret < 0)
467  return ret;
468  sr = opvsel & VDDCTRL_OP_CMD_MASK;
469  opvsel &= VDDCTRL_OP_SEL_MASK;
470  srvsel &= VDDCTRL_SR_SEL_MASK;
471  vselmax = 64;
472  break;
473  }
474 
475  /* multiplier 0 == 1 but 2,3 normal */
476  if (!mult)
477  mult=1;
478 
479  if (sr) {
480  /* normalise to valid range */
481  if (srvsel < 3)
482  srvsel = 3;
483  if (srvsel > vselmax)
484  srvsel = vselmax;
485  return srvsel - 3;
486  } else {
487 
488  /* normalise to valid range*/
489  if (opvsel < 3)
490  opvsel = 3;
491  if (opvsel > vselmax)
492  opvsel = vselmax;
493  return opvsel - 3;
494  }
495  return -EINVAL;
496 }
497 
498 static int tps65910_get_voltage_sel(struct regulator_dev *dev)
499 {
500  struct tps65910_reg *pmic = rdev_get_drvdata(dev);
501  int ret, reg, value, id = rdev_get_id(dev);
502 
503  reg = pmic->get_ctrl_reg(id);
504  if (reg < 0)
505  return reg;
506 
507  ret = tps65910_reg_read(pmic->mfd, reg, &value);
508  if (ret < 0)
509  return ret;
510 
511  switch (id) {
512  case TPS65910_REG_VIO:
513  case TPS65910_REG_VDIG1:
514  case TPS65910_REG_VDIG2:
515  case TPS65910_REG_VPLL:
516  case TPS65910_REG_VDAC:
517  case TPS65910_REG_VAUX1:
518  case TPS65910_REG_VAUX2:
519  case TPS65910_REG_VAUX33:
520  case TPS65910_REG_VMMC:
521  value &= LDO_SEL_MASK;
522  value >>= LDO_SEL_SHIFT;
523  break;
524  default:
525  return -EINVAL;
526  }
527 
528  return value;
529 }
530 
531 static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
532 {
533  return dev->desc->volt_table[0];
534 }
535 
536 static int tps65911_get_voltage_sel(struct regulator_dev *dev)
537 {
538  struct tps65910_reg *pmic = rdev_get_drvdata(dev);
539  int ret, id = rdev_get_id(dev);
540  unsigned int value, reg;
541 
542  reg = pmic->get_ctrl_reg(id);
543 
544  ret = tps65910_reg_read(pmic->mfd, reg, &value);
545  if (ret < 0)
546  return ret;
547 
548  switch (id) {
549  case TPS65911_REG_LDO1:
550  case TPS65911_REG_LDO2:
551  case TPS65911_REG_LDO4:
552  value &= LDO1_SEL_MASK;
553  value >>= LDO_SEL_SHIFT;
554  break;
555  case TPS65911_REG_LDO3:
556  case TPS65911_REG_LDO5:
557  case TPS65911_REG_LDO6:
558  case TPS65911_REG_LDO7:
559  case TPS65911_REG_LDO8:
560  value &= LDO3_SEL_MASK;
561  value >>= LDO_SEL_SHIFT;
562  break;
563  case TPS65910_REG_VIO:
564  value &= LDO_SEL_MASK;
565  value >>= LDO_SEL_SHIFT;
566  break;
567  default:
568  return -EINVAL;
569  }
570 
571  return value;
572 }
573 
574 static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev,
575  unsigned selector)
576 {
577  struct tps65910_reg *pmic = rdev_get_drvdata(dev);
578  int id = rdev_get_id(dev), vsel;
579  int dcdc_mult = 0;
580 
581  switch (id) {
582  case TPS65910_REG_VDD1:
583  dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
584  if (dcdc_mult == 1)
585  dcdc_mult--;
586  vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
587 
588  tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD1,
589  VDD1_VGAIN_SEL_MASK,
590  dcdc_mult << VDD1_VGAIN_SEL_SHIFT);
591  tps65910_reg_write(pmic->mfd, TPS65910_VDD1_OP, vsel);
592  break;
593  case TPS65910_REG_VDD2:
594  dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
595  if (dcdc_mult == 1)
596  dcdc_mult--;
597  vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
598 
599  tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD2,
600  VDD1_VGAIN_SEL_MASK,
601  dcdc_mult << VDD2_VGAIN_SEL_SHIFT);
602  tps65910_reg_write(pmic->mfd, TPS65910_VDD2_OP, vsel);
603  break;
604  case TPS65911_REG_VDDCTRL:
605  vsel = selector + 3;
606  tps65910_reg_write(pmic->mfd, TPS65911_VDDCTRL_OP, vsel);
607  }
608 
609  return 0;
610 }
611 
612 static int tps65910_set_voltage_sel(struct regulator_dev *dev,
613  unsigned selector)
614 {
615  struct tps65910_reg *pmic = rdev_get_drvdata(dev);
616  int reg, id = rdev_get_id(dev);
617 
618  reg = pmic->get_ctrl_reg(id);
619  if (reg < 0)
620  return reg;
621 
622  switch (id) {
623  case TPS65910_REG_VIO:
624  case TPS65910_REG_VDIG1:
625  case TPS65910_REG_VDIG2:
626  case TPS65910_REG_VPLL:
627  case TPS65910_REG_VDAC:
628  case TPS65910_REG_VAUX1:
629  case TPS65910_REG_VAUX2:
630  case TPS65910_REG_VAUX33:
631  case TPS65910_REG_VMMC:
632  return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
633  selector << LDO_SEL_SHIFT);
634  }
635 
636  return -EINVAL;
637 }
638 
639 static int tps65911_set_voltage_sel(struct regulator_dev *dev,
640  unsigned selector)
641 {
642  struct tps65910_reg *pmic = rdev_get_drvdata(dev);
643  int reg, id = rdev_get_id(dev);
644 
645  reg = pmic->get_ctrl_reg(id);
646  if (reg < 0)
647  return reg;
648 
649  switch (id) {
650  case TPS65911_REG_LDO1:
651  case TPS65911_REG_LDO2:
652  case TPS65911_REG_LDO4:
653  return tps65910_reg_update_bits(pmic->mfd, reg, LDO1_SEL_MASK,
654  selector << LDO_SEL_SHIFT);
655  case TPS65911_REG_LDO3:
656  case TPS65911_REG_LDO5:
657  case TPS65911_REG_LDO6:
658  case TPS65911_REG_LDO7:
659  case TPS65911_REG_LDO8:
660  return tps65910_reg_update_bits(pmic->mfd, reg, LDO3_SEL_MASK,
661  selector << LDO_SEL_SHIFT);
662  case TPS65910_REG_VIO:
663  return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
664  selector << LDO_SEL_SHIFT);
665  }
666 
667  return -EINVAL;
668 }
669 
670 
671 static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
672  unsigned selector)
673 {
674  int volt, mult = 1, id = rdev_get_id(dev);
675 
676  switch (id) {
677  case TPS65910_REG_VDD1:
678  case TPS65910_REG_VDD2:
679  mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
680  volt = VDD1_2_MIN_VOLT +
681  (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET;
682  break;
683  case TPS65911_REG_VDDCTRL:
684  volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET);
685  break;
686  default:
687  BUG();
688  return -EINVAL;
689  }
690 
691  return volt * 100 * mult;
692 }
693 
694 static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector)
695 {
696  struct tps65910_reg *pmic = rdev_get_drvdata(dev);
697  int step_mv = 0, id = rdev_get_id(dev);
698 
699  switch(id) {
700  case TPS65911_REG_LDO1:
701  case TPS65911_REG_LDO2:
702  case TPS65911_REG_LDO4:
703  /* The first 5 values of the selector correspond to 1V */
704  if (selector < 5)
705  selector = 0;
706  else
707  selector -= 4;
708 
709  step_mv = 50;
710  break;
711  case TPS65911_REG_LDO3:
712  case TPS65911_REG_LDO5:
713  case TPS65911_REG_LDO6:
714  case TPS65911_REG_LDO7:
715  case TPS65911_REG_LDO8:
716  /* The first 3 values of the selector correspond to 1V */
717  if (selector < 3)
718  selector = 0;
719  else
720  selector -= 2;
721 
722  step_mv = 100;
723  break;
724  case TPS65910_REG_VIO:
725  return pmic->info[id]->voltage_table[selector];
726  default:
727  return -EINVAL;
728  }
729 
730  return (LDO_MIN_VOLT + selector * step_mv) * 1000;
731 }
732 
733 /* Regulator ops (except VRTC) */
734 static struct regulator_ops tps65910_ops_dcdc = {
735  .is_enabled = regulator_is_enabled_regmap,
736  .enable = regulator_enable_regmap,
737  .disable = regulator_disable_regmap,
738  .set_mode = tps65910_set_mode,
739  .get_mode = tps65910_get_mode,
740  .get_voltage_sel = tps65910_get_voltage_dcdc_sel,
741  .set_voltage_sel = tps65910_set_voltage_dcdc_sel,
742  .set_voltage_time_sel = regulator_set_voltage_time_sel,
743  .list_voltage = tps65910_list_voltage_dcdc,
744 };
745 
746 static struct regulator_ops tps65910_ops_vdd3 = {
747  .is_enabled = regulator_is_enabled_regmap,
748  .enable = regulator_enable_regmap,
749  .disable = regulator_disable_regmap,
750  .set_mode = tps65910_set_mode,
751  .get_mode = tps65910_get_mode,
752  .get_voltage = tps65910_get_voltage_vdd3,
753  .list_voltage = regulator_list_voltage_table,
754 };
755 
756 static struct regulator_ops tps65910_ops = {
757  .is_enabled = regulator_is_enabled_regmap,
758  .enable = regulator_enable_regmap,
759  .disable = regulator_disable_regmap,
760  .set_mode = tps65910_set_mode,
761  .get_mode = tps65910_get_mode,
762  .get_voltage_sel = tps65910_get_voltage_sel,
763  .set_voltage_sel = tps65910_set_voltage_sel,
764  .list_voltage = regulator_list_voltage_table,
765 };
766 
767 static struct regulator_ops tps65911_ops = {
768  .is_enabled = regulator_is_enabled_regmap,
769  .enable = regulator_enable_regmap,
770  .disable = regulator_disable_regmap,
771  .set_mode = tps65910_set_mode,
772  .get_mode = tps65910_get_mode,
773  .get_voltage_sel = tps65911_get_voltage_sel,
774  .set_voltage_sel = tps65911_set_voltage_sel,
775  .list_voltage = tps65911_list_voltage,
776 };
777 
778 static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
779  int id, int ext_sleep_config)
780 {
781  struct tps65910 *mfd = pmic->mfd;
782  u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF;
783  u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF);
784  int ret;
785 
786  /*
787  * Regulator can not be control from multiple external input EN1, EN2
788  * and EN3 together.
789  */
790  if (ext_sleep_config & EXT_SLEEP_CONTROL) {
791  int en_count;
792  en_count = ((ext_sleep_config &
793  TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0);
794  en_count += ((ext_sleep_config &
795  TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0);
796  en_count += ((ext_sleep_config &
797  TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0);
798  en_count += ((ext_sleep_config &
799  TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0);
800  if (en_count > 1) {
801  dev_err(mfd->dev,
802  "External sleep control flag is not proper\n");
803  return -EINVAL;
804  }
805  }
806 
807  pmic->board_ext_control[id] = ext_sleep_config;
808 
809  /* External EN1 control */
810  if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1)
811  ret = tps65910_reg_set_bits(mfd,
812  TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
813  else
814  ret = tps65910_reg_clear_bits(mfd,
815  TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
816  if (ret < 0) {
817  dev_err(mfd->dev,
818  "Error in configuring external control EN1\n");
819  return ret;
820  }
821 
822  /* External EN2 control */
823  if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2)
824  ret = tps65910_reg_set_bits(mfd,
825  TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
826  else
827  ret = tps65910_reg_clear_bits(mfd,
828  TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
829  if (ret < 0) {
830  dev_err(mfd->dev,
831  "Error in configuring external control EN2\n");
832  return ret;
833  }
834 
835  /* External EN3 control for TPS65910 LDO only */
836  if ((tps65910_chip_id(mfd) == TPS65910) &&
837  (id >= TPS65910_REG_VDIG1)) {
838  if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
839  ret = tps65910_reg_set_bits(mfd,
840  TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
841  else
842  ret = tps65910_reg_clear_bits(mfd,
843  TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
844  if (ret < 0) {
845  dev_err(mfd->dev,
846  "Error in configuring external control EN3\n");
847  return ret;
848  }
849  }
850 
851  /* Return if no external control is selected */
852  if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) {
853  /* Clear all sleep controls */
854  ret = tps65910_reg_clear_bits(mfd,
855  TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
856  if (!ret)
857  ret = tps65910_reg_clear_bits(mfd,
858  TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
859  if (ret < 0)
860  dev_err(mfd->dev,
861  "Error in configuring SLEEP register\n");
862  return ret;
863  }
864 
865  /*
866  * For regulator that has separate operational and sleep register make
867  * sure that operational is used and clear sleep register to turn
868  * regulator off when external control is inactive
869  */
870  if ((id == TPS65910_REG_VDD1) ||
871  (id == TPS65910_REG_VDD2) ||
872  ((id == TPS65911_REG_VDDCTRL) &&
873  (tps65910_chip_id(mfd) == TPS65911))) {
874  int op_reg_add = pmic->get_ctrl_reg(id) + 1;
875  int sr_reg_add = pmic->get_ctrl_reg(id) + 2;
876  int opvsel, srvsel;
877 
878  ret = tps65910_reg_read(pmic->mfd, op_reg_add, &opvsel);
879  if (ret < 0)
880  return ret;
881  ret = tps65910_reg_read(pmic->mfd, sr_reg_add, &srvsel);
882  if (ret < 0)
883  return ret;
884 
885  if (opvsel & VDD1_OP_CMD_MASK) {
886  u8 reg_val = srvsel & VDD1_OP_SEL_MASK;
887 
888  ret = tps65910_reg_write(pmic->mfd, op_reg_add,
889  reg_val);
890  if (ret < 0) {
891  dev_err(mfd->dev,
892  "Error in configuring op register\n");
893  return ret;
894  }
895  }
896  ret = tps65910_reg_write(pmic->mfd, sr_reg_add, 0);
897  if (ret < 0) {
898  dev_err(mfd->dev, "Error in settting sr register\n");
899  return ret;
900  }
901  }
902 
903  ret = tps65910_reg_clear_bits(mfd,
904  TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
905  if (!ret) {
906  if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
907  ret = tps65910_reg_set_bits(mfd,
908  TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
909  else
910  ret = tps65910_reg_clear_bits(mfd,
911  TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
912  }
913  if (ret < 0)
914  dev_err(mfd->dev,
915  "Error in configuring SLEEP register\n");
916 
917  return ret;
918 }
919 
920 #ifdef CONFIG_OF
921 
922 static struct of_regulator_match tps65910_matches[] = {
923  { .name = "vrtc", .driver_data = (void *) &tps65910_regs[0] },
924  { .name = "vio", .driver_data = (void *) &tps65910_regs[1] },
925  { .name = "vdd1", .driver_data = (void *) &tps65910_regs[2] },
926  { .name = "vdd2", .driver_data = (void *) &tps65910_regs[3] },
927  { .name = "vdd3", .driver_data = (void *) &tps65910_regs[4] },
928  { .name = "vdig1", .driver_data = (void *) &tps65910_regs[5] },
929  { .name = "vdig2", .driver_data = (void *) &tps65910_regs[6] },
930  { .name = "vpll", .driver_data = (void *) &tps65910_regs[7] },
931  { .name = "vdac", .driver_data = (void *) &tps65910_regs[8] },
932  { .name = "vaux1", .driver_data = (void *) &tps65910_regs[9] },
933  { .name = "vaux2", .driver_data = (void *) &tps65910_regs[10] },
934  { .name = "vaux33", .driver_data = (void *) &tps65910_regs[11] },
935  { .name = "vmmc", .driver_data = (void *) &tps65910_regs[12] },
936 };
937 
938 static struct of_regulator_match tps65911_matches[] = {
939  { .name = "vrtc", .driver_data = (void *) &tps65911_regs[0] },
940  { .name = "vio", .driver_data = (void *) &tps65911_regs[1] },
941  { .name = "vdd1", .driver_data = (void *) &tps65911_regs[2] },
942  { .name = "vdd2", .driver_data = (void *) &tps65911_regs[3] },
943  { .name = "vddctrl", .driver_data = (void *) &tps65911_regs[4] },
944  { .name = "ldo1", .driver_data = (void *) &tps65911_regs[5] },
945  { .name = "ldo2", .driver_data = (void *) &tps65911_regs[6] },
946  { .name = "ldo3", .driver_data = (void *) &tps65911_regs[7] },
947  { .name = "ldo4", .driver_data = (void *) &tps65911_regs[8] },
948  { .name = "ldo5", .driver_data = (void *) &tps65911_regs[9] },
949  { .name = "ldo6", .driver_data = (void *) &tps65911_regs[10] },
950  { .name = "ldo7", .driver_data = (void *) &tps65911_regs[11] },
951  { .name = "ldo8", .driver_data = (void *) &tps65911_regs[12] },
952 };
953 
954 static struct tps65910_board *tps65910_parse_dt_reg_data(
955  struct platform_device *pdev,
956  struct of_regulator_match **tps65910_reg_matches)
957 {
958  struct tps65910_board *pmic_plat_data;
959  struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
960  struct device_node *np = pdev->dev.parent->of_node;
961  struct device_node *regulators;
962  struct of_regulator_match *matches;
963  unsigned int prop;
964  int idx = 0, ret, count;
965 
966  pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data),
967  GFP_KERNEL);
968 
969  if (!pmic_plat_data) {
970  dev_err(&pdev->dev, "Failure to alloc pdata for regulators.\n");
971  return NULL;
972  }
973 
974  regulators = of_find_node_by_name(np, "regulators");
975  if (!regulators) {
976  dev_err(&pdev->dev, "regulator node not found\n");
977  return NULL;
978  }
979 
980  switch (tps65910_chip_id(tps65910)) {
981  case TPS65910:
982  count = ARRAY_SIZE(tps65910_matches);
983  matches = tps65910_matches;
984  break;
985  case TPS65911:
986  count = ARRAY_SIZE(tps65911_matches);
987  matches = tps65911_matches;
988  break;
989  default:
990  dev_err(&pdev->dev, "Invalid tps chip version\n");
991  return NULL;
992  }
993 
994  ret = of_regulator_match(pdev->dev.parent, regulators, matches, count);
995  if (ret < 0) {
996  dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
997  ret);
998  return NULL;
999  }
1000 
1001  *tps65910_reg_matches = matches;
1002 
1003  for (idx = 0; idx < count; idx++) {
1004  if (!matches[idx].init_data || !matches[idx].of_node)
1005  continue;
1006 
1007  pmic_plat_data->tps65910_pmic_init_data[idx] =
1008  matches[idx].init_data;
1009 
1010  ret = of_property_read_u32(matches[idx].of_node,
1011  "ti,regulator-ext-sleep-control", &prop);
1012  if (!ret)
1013  pmic_plat_data->regulator_ext_sleep_control[idx] = prop;
1014 
1015  }
1016 
1017  return pmic_plat_data;
1018 }
1019 #else
1020 static inline struct tps65910_board *tps65910_parse_dt_reg_data(
1021  struct platform_device *pdev,
1022  struct of_regulator_match **tps65910_reg_matches)
1023 {
1024  *tps65910_reg_matches = NULL;
1025  return NULL;
1026 }
1027 #endif
1028 
1029 static __devinit int tps65910_probe(struct platform_device *pdev)
1030 {
1031  struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
1032  struct regulator_config config = { };
1033  struct tps_info *info;
1034  struct regulator_init_data *reg_data;
1035  struct regulator_dev *rdev;
1036  struct tps65910_reg *pmic;
1037  struct tps65910_board *pmic_plat_data;
1038  struct of_regulator_match *tps65910_reg_matches = NULL;
1039  int i, err;
1040 
1041  pmic_plat_data = dev_get_platdata(tps65910->dev);
1042  if (!pmic_plat_data && tps65910->dev->of_node)
1043  pmic_plat_data = tps65910_parse_dt_reg_data(pdev,
1044  &tps65910_reg_matches);
1045 
1046  if (!pmic_plat_data) {
1047  dev_err(&pdev->dev, "Platform data not found\n");
1048  return -EINVAL;
1049  }
1050 
1051  pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
1052  if (!pmic) {
1053  dev_err(&pdev->dev, "Memory allocation failed for pmic\n");
1054  return -ENOMEM;
1055  }
1056 
1057  pmic->mfd = tps65910;
1058  platform_set_drvdata(pdev, pmic);
1059 
1060  /* Give control of all register to control port */
1061  tps65910_reg_set_bits(pmic->mfd, TPS65910_DEVCTRL,
1062  DEVCTRL_SR_CTL_I2C_SEL_MASK);
1063 
1064  switch(tps65910_chip_id(tps65910)) {
1065  case TPS65910:
1066  pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
1067  pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
1068  pmic->ext_sleep_control = tps65910_ext_sleep_control;
1069  info = tps65910_regs;
1070  break;
1071  case TPS65911:
1072  pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
1073  pmic->num_regulators = ARRAY_SIZE(tps65911_regs);
1074  pmic->ext_sleep_control = tps65911_ext_sleep_control;
1075  info = tps65911_regs;
1076  break;
1077  default:
1078  dev_err(&pdev->dev, "Invalid tps chip version\n");
1079  return -ENODEV;
1080  }
1081 
1082  pmic->desc = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1083  sizeof(struct regulator_desc), GFP_KERNEL);
1084  if (!pmic->desc) {
1085  dev_err(&pdev->dev, "Memory alloc fails for desc\n");
1086  return -ENOMEM;
1087  }
1088 
1089  pmic->info = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1090  sizeof(struct tps_info *), GFP_KERNEL);
1091  if (!pmic->info) {
1092  dev_err(&pdev->dev, "Memory alloc fails for info\n");
1093  return -ENOMEM;
1094  }
1095 
1096  pmic->rdev = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1097  sizeof(struct regulator_dev *), GFP_KERNEL);
1098  if (!pmic->rdev) {
1099  dev_err(&pdev->dev, "Memory alloc fails for rdev\n");
1100  return -ENOMEM;
1101  }
1102 
1103  for (i = 0; i < pmic->num_regulators && i < TPS65910_NUM_REGS;
1104  i++, info++) {
1105 
1106  reg_data = pmic_plat_data->tps65910_pmic_init_data[i];
1107 
1108  /* Regulator API handles empty constraints but not NULL
1109  * constraints */
1110  if (!reg_data)
1111  continue;
1112 
1113  /* Register the regulators */
1114  pmic->info[i] = info;
1115 
1116  pmic->desc[i].name = info->name;
1117  pmic->desc[i].supply_name = info->vin_name;
1118  pmic->desc[i].id = i;
1119  pmic->desc[i].n_voltages = info->n_voltages;
1120  pmic->desc[i].enable_time = info->enable_time_us;
1121 
1122  if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) {
1123  pmic->desc[i].ops = &tps65910_ops_dcdc;
1124  pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE *
1125  VDD1_2_NUM_VOLT_COARSE;
1126  pmic->desc[i].ramp_delay = 12500;
1127  } else if (i == TPS65910_REG_VDD3) {
1128  if (tps65910_chip_id(tps65910) == TPS65910) {
1129  pmic->desc[i].ops = &tps65910_ops_vdd3;
1130  pmic->desc[i].volt_table = info->voltage_table;
1131  } else {
1132  pmic->desc[i].ops = &tps65910_ops_dcdc;
1133  pmic->desc[i].ramp_delay = 5000;
1134  }
1135  } else {
1136  if (tps65910_chip_id(tps65910) == TPS65910) {
1137  pmic->desc[i].ops = &tps65910_ops;
1138  pmic->desc[i].volt_table = info->voltage_table;
1139  } else {
1140  pmic->desc[i].ops = &tps65911_ops;
1141  }
1142  }
1143 
1144  err = tps65910_set_ext_sleep_config(pmic, i,
1145  pmic_plat_data->regulator_ext_sleep_control[i]);
1146  /*
1147  * Failing on regulator for configuring externally control
1148  * is not a serious issue, just throw warning.
1149  */
1150  if (err < 0)
1151  dev_warn(tps65910->dev,
1152  "Failed to initialise ext control config\n");
1153 
1154  pmic->desc[i].type = REGULATOR_VOLTAGE;
1155  pmic->desc[i].owner = THIS_MODULE;
1156  pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i);
1157  pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED;
1158 
1159  config.dev = tps65910->dev;
1160  config.init_data = reg_data;
1161  config.driver_data = pmic;
1162  config.regmap = tps65910->regmap;
1163 
1164  if (tps65910_reg_matches)
1165  config.of_node = tps65910_reg_matches[i].of_node;
1166 
1167  rdev = regulator_register(&pmic->desc[i], &config);
1168  if (IS_ERR(rdev)) {
1169  dev_err(tps65910->dev,
1170  "failed to register %s regulator\n",
1171  pdev->name);
1172  err = PTR_ERR(rdev);
1173  goto err_unregister_regulator;
1174  }
1175 
1176  /* Save regulator for cleanup */
1177  pmic->rdev[i] = rdev;
1178  }
1179  return 0;
1180 
1181 err_unregister_regulator:
1182  while (--i >= 0)
1183  regulator_unregister(pmic->rdev[i]);
1184  return err;
1185 }
1186 
1187 static int __devexit tps65910_remove(struct platform_device *pdev)
1188 {
1189  struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1190  int i;
1191 
1192  for (i = 0; i < pmic->num_regulators; i++)
1193  regulator_unregister(pmic->rdev[i]);
1194 
1195  return 0;
1196 }
1197 
1198 static void tps65910_shutdown(struct platform_device *pdev)
1199 {
1200  struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1201  int i;
1202 
1203  /*
1204  * Before bootloader jumps to kernel, it makes sure that required
1205  * external control signals are in desired state so that given rails
1206  * can be configure accordingly.
1207  * If rails are configured to be controlled from external control
1208  * then before shutting down/rebooting the system, the external
1209  * control configuration need to be remove from the rails so that
1210  * its output will be available as per register programming even
1211  * if external controls are removed. This is require when the POR
1212  * value of the control signals are not in active state and before
1213  * bootloader initializes it, the system requires the rail output
1214  * to be active for booting.
1215  */
1216  for (i = 0; i < pmic->num_regulators; i++) {
1217  int err;
1218  if (!pmic->rdev[i])
1219  continue;
1220 
1221  err = tps65910_set_ext_sleep_config(pmic, i, 0);
1222  if (err < 0)
1223  dev_err(&pdev->dev,
1224  "Error in clearing external control\n");
1225  }
1226 }
1227 
1228 static struct platform_driver tps65910_driver = {
1229  .driver = {
1230  .name = "tps65910-pmic",
1231  .owner = THIS_MODULE,
1232  },
1233  .probe = tps65910_probe,
1234  .remove = __devexit_p(tps65910_remove),
1235  .shutdown = tps65910_shutdown,
1236 };
1237 
1238 static int __init tps65910_init(void)
1239 {
1240  return platform_driver_register(&tps65910_driver);
1241 }
1242 subsys_initcall(tps65910_init);
1243 
1244 static void __exit tps65910_cleanup(void)
1245 {
1246  platform_driver_unregister(&tps65910_driver);
1247 }
1248 module_exit(tps65910_cleanup);
1249 
1250 MODULE_AUTHOR("Graeme Gregory <[email protected]>");
1251 MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver");
1252 MODULE_LICENSE("GPL v2");
1253 MODULE_ALIAS("platform:tps65910-pmic");
Generated on Thu Jan 10 2013 14:16:36 for Linux Kernel by   doxygen 1.8.2