1 /*
2 * Split TWL6030 logic from twl-regulator.c:
3 * Copyright (C) 2008 David Brownell
4 *
5 * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@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 as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 */
12
13 #include <linux/module.h>
14 #include <linux/string.h>
15 #include <linux/slab.h>
16 #include <linux/init.h>
17 #include <linux/err.h>
18 #include <linux/platform_device.h>
19 #include <linux/of.h>
20 #include <linux/of_device.h>
21 #include <linux/regulator/driver.h>
22 #include <linux/regulator/machine.h>
23 #include <linux/regulator/of_regulator.h>
24 #include <linux/mfd/twl.h>
25 #include <linux/delay.h>
26
27 struct twlreg_info {
28 /* start of regulator's PM_RECEIVER control register bank */
29 u8 base;
30
31 /* twl resource ID, for resource control state machine */
32 u8 id;
33
34 /* chip constraints on regulator behavior */
35 u16 min_mV;
36
37 u8 flags;
38
39 /* used by regulator core */
40 struct regulator_desc desc;
41
42 /* chip specific features */
43 unsigned long features;
44
45 /* data passed from board for external get/set voltage */
46 void *data;
47 };
48
49
50 /* LDO control registers ... offset is from the base of its register bank.
51 * The first three registers of all power resource banks help hardware to
52 * manage the various resource groups.
53 */
54 /* Common offset in TWL4030/6030 */
55 #define VREG_GRP 0
56 /* TWL6030 register offsets */
57 #define VREG_TRANS 1
58 #define VREG_STATE 2
59 #define VREG_VOLTAGE 3
60 #define VREG_VOLTAGE_SMPS 4
61 /* TWL6030 Misc register offsets */
62 #define VREG_BC_ALL 1
63 #define VREG_BC_REF 2
64 #define VREG_BC_PROC 3
65 #define VREG_BC_CLK_RST 4
66
67 /* TWL6030 LDO register values for CFG_STATE */
68 #define TWL6030_CFG_STATE_OFF 0x00
69 #define TWL6030_CFG_STATE_ON 0x01
70 #define TWL6030_CFG_STATE_OFF2 0x02
71 #define TWL6030_CFG_STATE_SLEEP 0x03
72 #define TWL6030_CFG_STATE_GRP_SHIFT 5
73 #define TWL6030_CFG_STATE_APP_SHIFT 2
74 #define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
75 #define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
76 TWL6030_CFG_STATE_APP_SHIFT)
77
78 /* Flags for SMPS Voltage reading */
79 #define SMPS_OFFSET_EN BIT(0)
80 #define SMPS_EXTENDED_EN BIT(1)
81
82 /* twl6032 SMPS EPROM values */
83 #define TWL6030_SMPS_OFFSET 0xB0
84 #define TWL6030_SMPS_MULT 0xB3
85 #define SMPS_MULTOFFSET_SMPS4 BIT(0)
86 #define SMPS_MULTOFFSET_VIO BIT(1)
87 #define SMPS_MULTOFFSET_SMPS3 BIT(6)
88
89 static inline int
twlreg_read(struct twlreg_info * info,unsigned slave_subgp,unsigned offset)90 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
91 {
92 u8 value;
93 int status;
94
95 status = twl_i2c_read_u8(slave_subgp,
96 &value, info->base + offset);
97 return (status < 0) ? status : value;
98 }
99
100 static inline int
twlreg_write(struct twlreg_info * info,unsigned slave_subgp,unsigned offset,u8 value)101 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
102 u8 value)
103 {
104 return twl_i2c_write_u8(slave_subgp,
105 value, info->base + offset);
106 }
107
108 /* generic power resource operations, which work on all regulators */
twlreg_grp(struct regulator_dev * rdev)109 static int twlreg_grp(struct regulator_dev *rdev)
110 {
111 return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
112 VREG_GRP);
113 }
114
115 /*
116 * Enable/disable regulators by joining/leaving the P1 (processor) group.
117 * We assume nobody else is updating the DEV_GRP registers.
118 */
119 /* definition for 6030 family */
120 #define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */
121 #define P2_GRP_6030 BIT(1) /* "peripherals" */
122 #define P1_GRP_6030 BIT(0) /* CPU/Linux */
123
twl6030reg_is_enabled(struct regulator_dev * rdev)124 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
125 {
126 struct twlreg_info *info = rdev_get_drvdata(rdev);
127 int grp = 0, val;
128
129 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
130 grp = twlreg_grp(rdev);
131 if (grp < 0)
132 return grp;
133 grp &= P1_GRP_6030;
134 } else {
135 grp = 1;
136 }
137
138 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
139 val = TWL6030_CFG_STATE_APP(val);
140
141 return grp && (val == TWL6030_CFG_STATE_ON);
142 }
143
144 #define PB_I2C_BUSY BIT(0)
145 #define PB_I2C_BWEN BIT(1)
146
147
twl6030reg_enable(struct regulator_dev * rdev)148 static int twl6030reg_enable(struct regulator_dev *rdev)
149 {
150 struct twlreg_info *info = rdev_get_drvdata(rdev);
151 int grp = 0;
152 int ret;
153
154 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
155 grp = twlreg_grp(rdev);
156 if (grp < 0)
157 return grp;
158
159 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
160 grp << TWL6030_CFG_STATE_GRP_SHIFT |
161 TWL6030_CFG_STATE_ON);
162 return ret;
163 }
164
twl6030reg_disable(struct regulator_dev * rdev)165 static int twl6030reg_disable(struct regulator_dev *rdev)
166 {
167 struct twlreg_info *info = rdev_get_drvdata(rdev);
168 int grp = 0;
169 int ret;
170
171 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
172 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
173
174 /* For 6030, set the off state for all grps enabled */
175 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
176 (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
177 TWL6030_CFG_STATE_OFF);
178
179 return ret;
180 }
181
twl6030reg_get_status(struct regulator_dev * rdev)182 static int twl6030reg_get_status(struct regulator_dev *rdev)
183 {
184 struct twlreg_info *info = rdev_get_drvdata(rdev);
185 int val;
186
187 val = twlreg_grp(rdev);
188 if (val < 0)
189 return val;
190
191 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
192
193 switch (TWL6030_CFG_STATE_APP(val)) {
194 case TWL6030_CFG_STATE_ON:
195 return REGULATOR_STATUS_NORMAL;
196
197 case TWL6030_CFG_STATE_SLEEP:
198 return REGULATOR_STATUS_STANDBY;
199
200 case TWL6030_CFG_STATE_OFF:
201 case TWL6030_CFG_STATE_OFF2:
202 default:
203 break;
204 }
205
206 return REGULATOR_STATUS_OFF;
207 }
208
twl6030reg_set_mode(struct regulator_dev * rdev,unsigned mode)209 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
210 {
211 struct twlreg_info *info = rdev_get_drvdata(rdev);
212 int grp = 0;
213 int val;
214
215 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
216 grp = twlreg_grp(rdev);
217
218 if (grp < 0)
219 return grp;
220
221 /* Compose the state register settings */
222 val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
223 /* We can only set the mode through state machine commands... */
224 switch (mode) {
225 case REGULATOR_MODE_NORMAL:
226 val |= TWL6030_CFG_STATE_ON;
227 break;
228 case REGULATOR_MODE_STANDBY:
229 val |= TWL6030_CFG_STATE_SLEEP;
230 break;
231
232 default:
233 return -EINVAL;
234 }
235
236 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
237 }
238
twl6030coresmps_set_voltage(struct regulator_dev * rdev,int min_uV,int max_uV,unsigned * selector)239 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
240 int max_uV, unsigned *selector)
241 {
242 return -ENODEV;
243 }
244
twl6030coresmps_get_voltage(struct regulator_dev * rdev)245 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
246 {
247 return -ENODEV;
248 }
249
250 static struct regulator_ops twl6030coresmps_ops = {
251 .set_voltage = twl6030coresmps_set_voltage,
252 .get_voltage = twl6030coresmps_get_voltage,
253 };
254
twl6030ldo_list_voltage(struct regulator_dev * rdev,unsigned sel)255 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
256 {
257 struct twlreg_info *info = rdev_get_drvdata(rdev);
258
259 switch (sel) {
260 case 0:
261 return 0;
262 case 1 ... 24:
263 /* Linear mapping from 00000001 to 00011000:
264 * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001)
265 */
266 return (info->min_mV + 100 * (sel - 1)) * 1000;
267 case 25 ... 30:
268 return -EINVAL;
269 case 31:
270 return 2750000;
271 default:
272 return -EINVAL;
273 }
274 }
275
276 static int
twl6030ldo_set_voltage_sel(struct regulator_dev * rdev,unsigned selector)277 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
278 {
279 struct twlreg_info *info = rdev_get_drvdata(rdev);
280
281 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
282 selector);
283 }
284
twl6030ldo_get_voltage_sel(struct regulator_dev * rdev)285 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
286 {
287 struct twlreg_info *info = rdev_get_drvdata(rdev);
288 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
289
290 return vsel;
291 }
292
293 static struct regulator_ops twl6030ldo_ops = {
294 .list_voltage = twl6030ldo_list_voltage,
295
296 .set_voltage_sel = twl6030ldo_set_voltage_sel,
297 .get_voltage_sel = twl6030ldo_get_voltage_sel,
298
299 .enable = twl6030reg_enable,
300 .disable = twl6030reg_disable,
301 .is_enabled = twl6030reg_is_enabled,
302
303 .set_mode = twl6030reg_set_mode,
304
305 .get_status = twl6030reg_get_status,
306 };
307
308 static struct regulator_ops twl6030fixed_ops = {
309 .list_voltage = regulator_list_voltage_linear,
310
311 .enable = twl6030reg_enable,
312 .disable = twl6030reg_disable,
313 .is_enabled = twl6030reg_is_enabled,
314
315 .set_mode = twl6030reg_set_mode,
316
317 .get_status = twl6030reg_get_status,
318 };
319
320 /*
321 * SMPS status and control
322 */
323
twl6030smps_list_voltage(struct regulator_dev * rdev,unsigned index)324 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
325 {
326 struct twlreg_info *info = rdev_get_drvdata(rdev);
327
328 int voltage = 0;
329
330 switch (info->flags) {
331 case SMPS_OFFSET_EN:
332 voltage = 100000;
333 /* fall through */
334 case 0:
335 switch (index) {
336 case 0:
337 voltage = 0;
338 break;
339 case 58:
340 voltage = 1350 * 1000;
341 break;
342 case 59:
343 voltage = 1500 * 1000;
344 break;
345 case 60:
346 voltage = 1800 * 1000;
347 break;
348 case 61:
349 voltage = 1900 * 1000;
350 break;
351 case 62:
352 voltage = 2100 * 1000;
353 break;
354 default:
355 voltage += (600000 + (12500 * (index - 1)));
356 }
357 break;
358 case SMPS_EXTENDED_EN:
359 switch (index) {
360 case 0:
361 voltage = 0;
362 break;
363 case 58:
364 voltage = 2084 * 1000;
365 break;
366 case 59:
367 voltage = 2315 * 1000;
368 break;
369 case 60:
370 voltage = 2778 * 1000;
371 break;
372 case 61:
373 voltage = 2932 * 1000;
374 break;
375 case 62:
376 voltage = 3241 * 1000;
377 break;
378 default:
379 voltage = (1852000 + (38600 * (index - 1)));
380 }
381 break;
382 case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
383 switch (index) {
384 case 0:
385 voltage = 0;
386 break;
387 case 58:
388 voltage = 4167 * 1000;
389 break;
390 case 59:
391 voltage = 2315 * 1000;
392 break;
393 case 60:
394 voltage = 2778 * 1000;
395 break;
396 case 61:
397 voltage = 2932 * 1000;
398 break;
399 case 62:
400 voltage = 3241 * 1000;
401 break;
402 default:
403 voltage = (2161000 + (38600 * (index - 1)));
404 }
405 break;
406 }
407
408 return voltage;
409 }
410
twl6030smps_map_voltage(struct regulator_dev * rdev,int min_uV,int max_uV)411 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
412 int max_uV)
413 {
414 struct twlreg_info *info = rdev_get_drvdata(rdev);
415 int vsel = 0;
416
417 switch (info->flags) {
418 case 0:
419 if (min_uV == 0)
420 vsel = 0;
421 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
422 vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
423 vsel++;
424 }
425 /* Values 1..57 for vsel are linear and can be calculated
426 * values 58..62 are non linear.
427 */
428 else if ((min_uV > 1900000) && (min_uV <= 2100000))
429 vsel = 62;
430 else if ((min_uV > 1800000) && (min_uV <= 1900000))
431 vsel = 61;
432 else if ((min_uV > 1500000) && (min_uV <= 1800000))
433 vsel = 60;
434 else if ((min_uV > 1350000) && (min_uV <= 1500000))
435 vsel = 59;
436 else if ((min_uV > 1300000) && (min_uV <= 1350000))
437 vsel = 58;
438 else
439 return -EINVAL;
440 break;
441 case SMPS_OFFSET_EN:
442 if (min_uV == 0)
443 vsel = 0;
444 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
445 vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
446 vsel++;
447 }
448 /* Values 1..57 for vsel are linear and can be calculated
449 * values 58..62 are non linear.
450 */
451 else if ((min_uV > 1900000) && (min_uV <= 2100000))
452 vsel = 62;
453 else if ((min_uV > 1800000) && (min_uV <= 1900000))
454 vsel = 61;
455 else if ((min_uV > 1500000) && (min_uV <= 1800000))
456 vsel = 60;
457 else if ((min_uV > 1350000) && (min_uV <= 1500000))
458 vsel = 59;
459 else
460 return -EINVAL;
461 break;
462 case SMPS_EXTENDED_EN:
463 if (min_uV == 0) {
464 vsel = 0;
465 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
466 vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
467 vsel++;
468 }
469 break;
470 case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
471 if (min_uV == 0) {
472 vsel = 0;
473 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
474 vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
475 vsel++;
476 }
477 break;
478 }
479
480 return vsel;
481 }
482
twl6030smps_set_voltage_sel(struct regulator_dev * rdev,unsigned int selector)483 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
484 unsigned int selector)
485 {
486 struct twlreg_info *info = rdev_get_drvdata(rdev);
487
488 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
489 selector);
490 }
491
twl6030smps_get_voltage_sel(struct regulator_dev * rdev)492 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
493 {
494 struct twlreg_info *info = rdev_get_drvdata(rdev);
495
496 return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
497 }
498
499 static struct regulator_ops twlsmps_ops = {
500 .list_voltage = twl6030smps_list_voltage,
501 .map_voltage = twl6030smps_map_voltage,
502
503 .set_voltage_sel = twl6030smps_set_voltage_sel,
504 .get_voltage_sel = twl6030smps_get_voltage_sel,
505
506 .enable = twl6030reg_enable,
507 .disable = twl6030reg_disable,
508 .is_enabled = twl6030reg_is_enabled,
509
510 .set_mode = twl6030reg_set_mode,
511
512 .get_status = twl6030reg_get_status,
513 };
514
515 /*----------------------------------------------------------------------*/
516
517 #define TWL6030_ADJUSTABLE_SMPS(label) \
518 static const struct twlreg_info TWL6030_INFO_##label = { \
519 .desc = { \
520 .name = #label, \
521 .id = TWL6030_REG_##label, \
522 .ops = &twl6030coresmps_ops, \
523 .type = REGULATOR_VOLTAGE, \
524 .owner = THIS_MODULE, \
525 }, \
526 }
527
528 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts) \
529 static const struct twlreg_info TWL6030_INFO_##label = { \
530 .base = offset, \
531 .min_mV = min_mVolts, \
532 .desc = { \
533 .name = #label, \
534 .id = TWL6030_REG_##label, \
535 .n_voltages = 32, \
536 .ops = &twl6030ldo_ops, \
537 .type = REGULATOR_VOLTAGE, \
538 .owner = THIS_MODULE, \
539 }, \
540 }
541
542 #define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts) \
543 static const struct twlreg_info TWL6032_INFO_##label = { \
544 .base = offset, \
545 .min_mV = min_mVolts, \
546 .desc = { \
547 .name = #label, \
548 .id = TWL6032_REG_##label, \
549 .n_voltages = 32, \
550 .ops = &twl6030ldo_ops, \
551 .type = REGULATOR_VOLTAGE, \
552 .owner = THIS_MODULE, \
553 }, \
554 }
555
556 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
557 static const struct twlreg_info TWLFIXED_INFO_##label = { \
558 .base = offset, \
559 .id = 0, \
560 .min_mV = mVolts, \
561 .desc = { \
562 .name = #label, \
563 .id = TWL6030##_REG_##label, \
564 .n_voltages = 1, \
565 .ops = &twl6030fixed_ops, \
566 .type = REGULATOR_VOLTAGE, \
567 .owner = THIS_MODULE, \
568 .min_uV = mVolts * 1000, \
569 .enable_time = turnon_delay, \
570 .of_map_mode = NULL, \
571 }, \
572 }
573
574 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
575 static const struct twlreg_info TWLSMPS_INFO_##label = { \
576 .base = offset, \
577 .min_mV = 600, \
578 .desc = { \
579 .name = #label, \
580 .id = TWL6032_REG_##label, \
581 .n_voltages = 63, \
582 .ops = &twlsmps_ops, \
583 .type = REGULATOR_VOLTAGE, \
584 .owner = THIS_MODULE, \
585 }, \
586 }
587
588 /* VUSBCP is managed *only* by the USB subchip */
589 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
590 /* Turnon-delay and remap configuration values for 6030 are not
591 verified since the specification is not public */
592 TWL6030_ADJUSTABLE_SMPS(VDD1);
593 TWL6030_ADJUSTABLE_SMPS(VDD2);
594 TWL6030_ADJUSTABLE_SMPS(VDD3);
595 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000);
596 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000);
597 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000);
598 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000);
599 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000);
600 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000);
601 /* 6025 are renamed compared to 6030 versions */
602 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000);
603 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000);
604 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000);
605 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000);
606 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000);
607 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000);
608 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000);
609 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000);
610 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000);
611 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
612 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
613 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
614 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
615 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
616 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
617 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
618 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
619 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
620
twl_get_smps_offset(void)621 static u8 twl_get_smps_offset(void)
622 {
623 u8 value;
624
625 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
626 TWL6030_SMPS_OFFSET);
627 return value;
628 }
629
twl_get_smps_mult(void)630 static u8 twl_get_smps_mult(void)
631 {
632 u8 value;
633
634 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
635 TWL6030_SMPS_MULT);
636 return value;
637 }
638
639 #define TWL_OF_MATCH(comp, family, label) \
640 { \
641 .compatible = comp, \
642 .data = &family##_INFO_##label, \
643 }
644
645 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
646 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
647 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
648 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
649
650 static const struct of_device_id twl_of_match[] = {
651 TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
652 TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
653 TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
654 TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
655 TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
656 TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
657 TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
658 TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
659 TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
660 TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
661 TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
662 TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
663 TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
664 TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
665 TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
666 TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
667 TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
668 TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
669 TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
670 TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
671 TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
672 TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
673 TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
674 TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
675 TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
676 TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
677 TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
678 {},
679 };
680 MODULE_DEVICE_TABLE(of, twl_of_match);
681
twlreg_probe(struct platform_device * pdev)682 static int twlreg_probe(struct platform_device *pdev)
683 {
684 int id;
685 struct twlreg_info *info;
686 const struct twlreg_info *template;
687 struct regulator_init_data *initdata;
688 struct regulation_constraints *c;
689 struct regulator_dev *rdev;
690 const struct of_device_id *match;
691 struct regulator_config config = { };
692
693 match = of_match_device(twl_of_match, &pdev->dev);
694 if (!match)
695 return -ENODEV;
696
697 template = match->data;
698 if (!template)
699 return -ENODEV;
700
701 id = template->desc.id;
702 initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
703 &template->desc);
704 if (!initdata)
705 return -EINVAL;
706
707 info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
708 if (!info)
709 return -ENOMEM;
710
711 /* Constrain board-specific capabilities according to what
712 * this driver and the chip itself can actually do.
713 */
714 c = &initdata->constraints;
715 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
716 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
717 | REGULATOR_CHANGE_MODE
718 | REGULATOR_CHANGE_STATUS;
719
720 switch (id) {
721 case TWL6032_REG_SMPS3:
722 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
723 info->flags |= SMPS_EXTENDED_EN;
724 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
725 info->flags |= SMPS_OFFSET_EN;
726 break;
727 case TWL6032_REG_SMPS4:
728 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
729 info->flags |= SMPS_EXTENDED_EN;
730 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
731 info->flags |= SMPS_OFFSET_EN;
732 break;
733 case TWL6032_REG_VIO:
734 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
735 info->flags |= SMPS_EXTENDED_EN;
736 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
737 info->flags |= SMPS_OFFSET_EN;
738 break;
739 }
740
741 config.dev = &pdev->dev;
742 config.init_data = initdata;
743 config.driver_data = info;
744 config.of_node = pdev->dev.of_node;
745
746 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
747 if (IS_ERR(rdev)) {
748 dev_err(&pdev->dev, "can't register %s, %ld\n",
749 info->desc.name, PTR_ERR(rdev));
750 return PTR_ERR(rdev);
751 }
752 platform_set_drvdata(pdev, rdev);
753
754 /* NOTE: many regulators support short-circuit IRQs (presentable
755 * as REGULATOR_OVER_CURRENT notifications?) configured via:
756 * - SC_CONFIG
757 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
758 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
759 * - IT_CONFIG
760 */
761
762 return 0;
763 }
764
765 MODULE_ALIAS("platform:twl6030_reg");
766
767 static struct platform_driver twlreg_driver = {
768 .probe = twlreg_probe,
769 /* NOTE: short name, to work around driver model truncation of
770 * "twl_regulator.12" (and friends) to "twl_regulator.1".
771 */
772 .driver = {
773 .name = "twl6030_reg",
774 .of_match_table = of_match_ptr(twl_of_match),
775 },
776 };
777
twlreg_init(void)778 static int __init twlreg_init(void)
779 {
780 return platform_driver_register(&twlreg_driver);
781 }
782 subsys_initcall(twlreg_init);
783
twlreg_exit(void)784 static void __exit twlreg_exit(void)
785 {
786 platform_driver_unregister(&twlreg_driver);
787 }
788 module_exit(twlreg_exit)
789
790 MODULE_DESCRIPTION("TWL6030 regulator driver");
791 MODULE_LICENSE("GPL");
792
