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intel_th: pci: Add Tiger Lake CPU support
[linux/fpc-iii.git] / drivers / regulator / twl6030-regulator.c
blobb8100c3cedad3fc91bebe9c2f09fb09b85d15b28
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Split TWL6030 logic from twl-regulator.c:
4 * Copyright (C) 2008 David Brownell
5 *
6 * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com>
7 */
8
9 #include <linux/module.h>
10 #include <linux/string.h>
11 #include <linux/slab.h>
12 #include <linux/init.h>
13 #include <linux/err.h>
14 #include <linux/platform_device.h>
15 #include <linux/of.h>
16 #include <linux/of_device.h>
17 #include <linux/regulator/driver.h>
18 #include <linux/regulator/machine.h>
19 #include <linux/regulator/of_regulator.h>
20 #include <linux/mfd/twl.h>
21 #include <linux/delay.h>
22
23 struct twlreg_info {
24 /* start of regulator's PM_RECEIVER control register bank */
25 u8 base;
26
27 /* twl resource ID, for resource control state machine */
28 u8 id;
29
30 u8 flags;
31
32 /* used by regulator core */
33 struct regulator_desc desc;
34
35 /* chip specific features */
36 unsigned long features;
37
38 /* data passed from board for external get/set voltage */
39 void *data;
40 };
41
42
43 /* LDO control registers ... offset is from the base of its register bank.
44 * The first three registers of all power resource banks help hardware to
45 * manage the various resource groups.
46 */
47 /* Common offset in TWL4030/6030 */
48 #define VREG_GRP 0
49 /* TWL6030 register offsets */
50 #define VREG_TRANS 1
51 #define VREG_STATE 2
52 #define VREG_VOLTAGE 3
53 #define VREG_VOLTAGE_SMPS 4
54 /* TWL6030 Misc register offsets */
55 #define VREG_BC_ALL 1
56 #define VREG_BC_REF 2
57 #define VREG_BC_PROC 3
58 #define VREG_BC_CLK_RST 4
59
60 /* TWL6030 LDO register values for VREG_VOLTAGE */
61 #define TWL6030_VREG_VOLTAGE_WR_S BIT(7)
62
63 /* TWL6030 LDO register values for CFG_STATE */
64 #define TWL6030_CFG_STATE_OFF 0x00
65 #define TWL6030_CFG_STATE_ON 0x01
66 #define TWL6030_CFG_STATE_OFF2 0x02
67 #define TWL6030_CFG_STATE_SLEEP 0x03
68 #define TWL6030_CFG_STATE_GRP_SHIFT 5
69 #define TWL6030_CFG_STATE_APP_SHIFT 2
70 #define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
71 #define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
72 TWL6030_CFG_STATE_APP_SHIFT)
73
74 /* Flags for SMPS Voltage reading and LDO reading*/
75 #define SMPS_OFFSET_EN BIT(0)
76 #define SMPS_EXTENDED_EN BIT(1)
77 #define TWL_6030_WARM_RESET BIT(3)
78
79 /* twl6032 SMPS EPROM values */
80 #define TWL6030_SMPS_OFFSET 0xB0
81 #define TWL6030_SMPS_MULT 0xB3
82 #define SMPS_MULTOFFSET_SMPS4 BIT(0)
83 #define SMPS_MULTOFFSET_VIO BIT(1)
84 #define SMPS_MULTOFFSET_SMPS3 BIT(6)
85
86 static inline int
87 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
88 {
89 u8 value;
90 int status;
91
92 status = twl_i2c_read_u8(slave_subgp,
93 &value, info->base + offset);
94 return (status < 0) ? status : value;
95 }
96
97 static inline int
98 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
99 u8 value)
100 {
101 return twl_i2c_write_u8(slave_subgp,
102 value, info->base + offset);
103 }
104
105 /* generic power resource operations, which work on all regulators */
106 static int twlreg_grp(struct regulator_dev *rdev)
107 {
108 return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
109 VREG_GRP);
110 }
111
112 /*
113 * Enable/disable regulators by joining/leaving the P1 (processor) group.
114 * We assume nobody else is updating the DEV_GRP registers.
115 */
116 /* definition for 6030 family */
117 #define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */
118 #define P2_GRP_6030 BIT(1) /* "peripherals" */
119 #define P1_GRP_6030 BIT(0) /* CPU/Linux */
120
121 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
122 {
123 struct twlreg_info *info = rdev_get_drvdata(rdev);
124 int grp = 0, val;
125
126 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
127 grp = twlreg_grp(rdev);
128 if (grp < 0)
129 return grp;
130 grp &= P1_GRP_6030;
131 } else {
132 grp = 1;
133 }
134
135 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
136 val = TWL6030_CFG_STATE_APP(val);
137
138 return grp && (val == TWL6030_CFG_STATE_ON);
139 }
140
141 #define PB_I2C_BUSY BIT(0)
142 #define PB_I2C_BWEN BIT(1)
143
144
145 static int twl6030reg_enable(struct regulator_dev *rdev)
146 {
147 struct twlreg_info *info = rdev_get_drvdata(rdev);
148 int grp = 0;
149 int ret;
150
151 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
152 grp = twlreg_grp(rdev);
153 if (grp < 0)
154 return grp;
155
156 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
157 grp << TWL6030_CFG_STATE_GRP_SHIFT |
158 TWL6030_CFG_STATE_ON);
159 return ret;
160 }
161
162 static int twl6030reg_disable(struct regulator_dev *rdev)
163 {
164 struct twlreg_info *info = rdev_get_drvdata(rdev);
165 int grp = 0;
166 int ret;
167
168 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
169 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
170
171 /* For 6030, set the off state for all grps enabled */
172 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
173 (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
174 TWL6030_CFG_STATE_OFF);
175
176 return ret;
177 }
178
179 static int twl6030reg_get_status(struct regulator_dev *rdev)
180 {
181 struct twlreg_info *info = rdev_get_drvdata(rdev);
182 int val;
183
184 val = twlreg_grp(rdev);
185 if (val < 0)
186 return val;
187
188 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
189
190 switch (TWL6030_CFG_STATE_APP(val)) {
191 case TWL6030_CFG_STATE_ON:
192 return REGULATOR_STATUS_NORMAL;
193
194 case TWL6030_CFG_STATE_SLEEP:
195 return REGULATOR_STATUS_STANDBY;
196
197 case TWL6030_CFG_STATE_OFF:
198 case TWL6030_CFG_STATE_OFF2:
199 default:
200 break;
201 }
202
203 return REGULATOR_STATUS_OFF;
204 }
205
206 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
207 {
208 struct twlreg_info *info = rdev_get_drvdata(rdev);
209 int grp = 0;
210 int val;
211
212 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
213 grp = twlreg_grp(rdev);
214
215 if (grp < 0)
216 return grp;
217
218 /* Compose the state register settings */
219 val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
220 /* We can only set the mode through state machine commands... */
221 switch (mode) {
222 case REGULATOR_MODE_NORMAL:
223 val |= TWL6030_CFG_STATE_ON;
224 break;
225 case REGULATOR_MODE_STANDBY:
226 val |= TWL6030_CFG_STATE_SLEEP;
227 break;
228
229 default:
230 return -EINVAL;
231 }
232
233 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
234 }
235
236 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
237 int max_uV, unsigned *selector)
238 {
239 return -ENODEV;
240 }
241
242 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
243 {
244 return -ENODEV;
245 }
246
247 static const struct regulator_ops twl6030coresmps_ops = {
248 .set_voltage = twl6030coresmps_set_voltage,
249 .get_voltage = twl6030coresmps_get_voltage,
250 };
251
252 static int
253 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
254 {
255 struct twlreg_info *info = rdev_get_drvdata(rdev);
256
257 if (info->flags & TWL_6030_WARM_RESET)
258 selector |= TWL6030_VREG_VOLTAGE_WR_S;
259
260 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
261 selector);
262 }
263
264 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
265 {
266 struct twlreg_info *info = rdev_get_drvdata(rdev);
267 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
268
269 if (info->flags & TWL_6030_WARM_RESET)
270 vsel &= ~TWL6030_VREG_VOLTAGE_WR_S;
271
272 return vsel;
273 }
274
275 static const struct regulator_ops twl6030ldo_ops = {
276 .list_voltage = regulator_list_voltage_linear_range,
277
278 .set_voltage_sel = twl6030ldo_set_voltage_sel,
279 .get_voltage_sel = twl6030ldo_get_voltage_sel,
280
281 .enable = twl6030reg_enable,
282 .disable = twl6030reg_disable,
283 .is_enabled = twl6030reg_is_enabled,
284
285 .set_mode = twl6030reg_set_mode,
286
287 .get_status = twl6030reg_get_status,
288 };
289
290 static const struct regulator_ops twl6030fixed_ops = {
291 .list_voltage = regulator_list_voltage_linear,
292
293 .enable = twl6030reg_enable,
294 .disable = twl6030reg_disable,
295 .is_enabled = twl6030reg_is_enabled,
296
297 .set_mode = twl6030reg_set_mode,
298
299 .get_status = twl6030reg_get_status,
300 };
301
302 /*
303 * SMPS status and control
304 */
305
306 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
307 {
308 struct twlreg_info *info = rdev_get_drvdata(rdev);
309
310 int voltage = 0;
311
312 switch (info->flags) {
313 case SMPS_OFFSET_EN:
314 voltage = 100000;
315 /* fall through */
316 case 0:
317 switch (index) {
318 case 0:
319 voltage = 0;
320 break;
321 case 58:
322 voltage = 1350 * 1000;
323 break;
324 case 59:
325 voltage = 1500 * 1000;
326 break;
327 case 60:
328 voltage = 1800 * 1000;
329 break;
330 case 61:
331 voltage = 1900 * 1000;
332 break;
333 case 62:
334 voltage = 2100 * 1000;
335 break;
336 default:
337 voltage += (600000 + (12500 * (index - 1)));
338 }
339 break;
340 case SMPS_EXTENDED_EN:
341 switch (index) {
342 case 0:
343 voltage = 0;
344 break;
345 case 58:
346 voltage = 2084 * 1000;
347 break;
348 case 59:
349 voltage = 2315 * 1000;
350 break;
351 case 60:
352 voltage = 2778 * 1000;
353 break;
354 case 61:
355 voltage = 2932 * 1000;
356 break;
357 case 62:
358 voltage = 3241 * 1000;
359 break;
360 default:
361 voltage = (1852000 + (38600 * (index - 1)));
362 }
363 break;
364 case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
365 switch (index) {
366 case 0:
367 voltage = 0;
368 break;
369 case 58:
370 voltage = 4167 * 1000;
371 break;
372 case 59:
373 voltage = 2315 * 1000;
374 break;
375 case 60:
376 voltage = 2778 * 1000;
377 break;
378 case 61:
379 voltage = 2932 * 1000;
380 break;
381 case 62:
382 voltage = 3241 * 1000;
383 break;
384 default:
385 voltage = (2161000 + (38600 * (index - 1)));
386 }
387 break;
388 }
389
390 return voltage;
391 }
392
393 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
394 int max_uV)
395 {
396 struct twlreg_info *info = rdev_get_drvdata(rdev);
397 int vsel = 0;
398
399 switch (info->flags) {
400 case 0:
401 if (min_uV == 0)
402 vsel = 0;
403 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
404 vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
405 vsel++;
406 }
407 /* Values 1..57 for vsel are linear and can be calculated
408 * values 58..62 are non linear.
409 */
410 else if ((min_uV > 1900000) && (min_uV <= 2100000))
411 vsel = 62;
412 else if ((min_uV > 1800000) && (min_uV <= 1900000))
413 vsel = 61;
414 else if ((min_uV > 1500000) && (min_uV <= 1800000))
415 vsel = 60;
416 else if ((min_uV > 1350000) && (min_uV <= 1500000))
417 vsel = 59;
418 else if ((min_uV > 1300000) && (min_uV <= 1350000))
419 vsel = 58;
420 else
421 return -EINVAL;
422 break;
423 case SMPS_OFFSET_EN:
424 if (min_uV == 0)
425 vsel = 0;
426 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
427 vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
428 vsel++;
429 }
430 /* Values 1..57 for vsel are linear and can be calculated
431 * values 58..62 are non linear.
432 */
433 else if ((min_uV > 1900000) && (min_uV <= 2100000))
434 vsel = 62;
435 else if ((min_uV > 1800000) && (min_uV <= 1900000))
436 vsel = 61;
437 else if ((min_uV > 1500000) && (min_uV <= 1800000))
438 vsel = 60;
439 else if ((min_uV > 1350000) && (min_uV <= 1500000))
440 vsel = 59;
441 else
442 return -EINVAL;
443 break;
444 case SMPS_EXTENDED_EN:
445 if (min_uV == 0) {
446 vsel = 0;
447 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
448 vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
449 vsel++;
450 }
451 break;
452 case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
453 if (min_uV == 0) {
454 vsel = 0;
455 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
456 vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
457 vsel++;
458 }
459 break;
460 }
461
462 return vsel;
463 }
464
465 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
466 unsigned int selector)
467 {
468 struct twlreg_info *info = rdev_get_drvdata(rdev);
469
470 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
471 selector);
472 }
473
474 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
475 {
476 struct twlreg_info *info = rdev_get_drvdata(rdev);
477
478 return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
479 }
480
481 static const struct regulator_ops twlsmps_ops = {
482 .list_voltage = twl6030smps_list_voltage,
483 .map_voltage = twl6030smps_map_voltage,
484
485 .set_voltage_sel = twl6030smps_set_voltage_sel,
486 .get_voltage_sel = twl6030smps_get_voltage_sel,
487
488 .enable = twl6030reg_enable,
489 .disable = twl6030reg_disable,
490 .is_enabled = twl6030reg_is_enabled,
491
492 .set_mode = twl6030reg_set_mode,
493
494 .get_status = twl6030reg_get_status,
495 };
496
497 /*----------------------------------------------------------------------*/
498 static const struct regulator_linear_range twl6030ldo_linear_range[] = {
499 REGULATOR_LINEAR_RANGE(0, 0, 0, 0),
500 REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000),
501 REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0),
502 };
503
504 #define TWL6030_ADJUSTABLE_SMPS(label) \
505 static const struct twlreg_info TWL6030_INFO_##label = { \
506 .desc = { \
507 .name = #label, \
508 .id = TWL6030_REG_##label, \
509 .ops = &twl6030coresmps_ops, \
510 .type = REGULATOR_VOLTAGE, \
511 .owner = THIS_MODULE, \
512 }, \
513 }
514
515 #define TWL6030_ADJUSTABLE_LDO(label, offset) \
516 static const struct twlreg_info TWL6030_INFO_##label = { \
517 .base = offset, \
518 .desc = { \
519 .name = #label, \
520 .id = TWL6030_REG_##label, \
521 .n_voltages = 32, \
522 .linear_ranges = twl6030ldo_linear_range, \
523 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
524 .ops = &twl6030ldo_ops, \
525 .type = REGULATOR_VOLTAGE, \
526 .owner = THIS_MODULE, \
527 }, \
528 }
529
530 #define TWL6032_ADJUSTABLE_LDO(label, offset) \
531 static const struct twlreg_info TWL6032_INFO_##label = { \
532 .base = offset, \
533 .desc = { \
534 .name = #label, \
535 .id = TWL6032_REG_##label, \
536 .n_voltages = 32, \
537 .linear_ranges = twl6030ldo_linear_range, \
538 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
539 .ops = &twl6030ldo_ops, \
540 .type = REGULATOR_VOLTAGE, \
541 .owner = THIS_MODULE, \
542 }, \
543 }
544
545 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
546 static const struct twlreg_info TWLFIXED_INFO_##label = { \
547 .base = offset, \
548 .id = 0, \
549 .desc = { \
550 .name = #label, \
551 .id = TWL6030##_REG_##label, \
552 .n_voltages = 1, \
553 .ops = &twl6030fixed_ops, \
554 .type = REGULATOR_VOLTAGE, \
555 .owner = THIS_MODULE, \
556 .min_uV = mVolts * 1000, \
557 .enable_time = turnon_delay, \
558 .of_map_mode = NULL, \
559 }, \
560 }
561
562 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
563 static const struct twlreg_info TWLSMPS_INFO_##label = { \
564 .base = offset, \
565 .desc = { \
566 .name = #label, \
567 .id = TWL6032_REG_##label, \
568 .n_voltages = 63, \
569 .ops = &twlsmps_ops, \
570 .type = REGULATOR_VOLTAGE, \
571 .owner = THIS_MODULE, \
572 }, \
573 }
574
575 /* VUSBCP is managed *only* by the USB subchip */
576 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
577 /* Turnon-delay and remap configuration values for 6030 are not
578 verified since the specification is not public */
579 TWL6030_ADJUSTABLE_SMPS(VDD1);
580 TWL6030_ADJUSTABLE_SMPS(VDD2);
581 TWL6030_ADJUSTABLE_SMPS(VDD3);
582 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54);
583 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58);
584 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c);
585 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68);
586 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c);
587 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74);
588 /* 6025 are renamed compared to 6030 versions */
589 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54);
590 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58);
591 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c);
592 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68);
593 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c);
594 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74);
595 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60);
596 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64);
597 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70);
598 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
599 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
600 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
601 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
602 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
603 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
604 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
605 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
606 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
607
608 static u8 twl_get_smps_offset(void)
609 {
610 u8 value;
611
612 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
613 TWL6030_SMPS_OFFSET);
614 return value;
615 }
616
617 static u8 twl_get_smps_mult(void)
618 {
619 u8 value;
620
621 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
622 TWL6030_SMPS_MULT);
623 return value;
624 }
625
626 #define TWL_OF_MATCH(comp, family, label) \
627 { \
628 .compatible = comp, \
629 .data = &family##_INFO_##label, \
630 }
631
632 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
633 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
634 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
635 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
636
637 static const struct of_device_id twl_of_match[] = {
638 TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
639 TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
640 TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
641 TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
642 TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
643 TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
644 TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
645 TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
646 TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
647 TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
648 TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
649 TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
650 TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
651 TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
652 TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
653 TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
654 TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
655 TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
656 TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
657 TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
658 TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
659 TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
660 TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
661 TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
662 TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
663 TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
664 TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
665 {},
666 };
667 MODULE_DEVICE_TABLE(of, twl_of_match);
668
669 static int twlreg_probe(struct platform_device *pdev)
670 {
671 int id;
672 struct twlreg_info *info;
673 const struct twlreg_info *template;
674 struct regulator_init_data *initdata;
675 struct regulation_constraints *c;
676 struct regulator_dev *rdev;
677 struct regulator_config config = { };
678 struct device_node *np = pdev->dev.of_node;
679
680 template = of_device_get_match_data(&pdev->dev);
681 if (!template)
682 return -ENODEV;
683
684 id = template->desc.id;
685 initdata = of_get_regulator_init_data(&pdev->dev, np, &template->desc);
686 if (!initdata)
687 return -EINVAL;
688
689 info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
690 if (!info)
691 return -ENOMEM;
692
693 /* Constrain board-specific capabilities according to what
694 * this driver and the chip itself can actually do.
695 */
696 c = &initdata->constraints;
697 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
698 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
699 | REGULATOR_CHANGE_MODE
700 | REGULATOR_CHANGE_STATUS;
701
702 switch (id) {
703 case TWL6032_REG_SMPS3:
704 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
705 info->flags |= SMPS_EXTENDED_EN;
706 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
707 info->flags |= SMPS_OFFSET_EN;
708 break;
709 case TWL6032_REG_SMPS4:
710 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
711 info->flags |= SMPS_EXTENDED_EN;
712 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
713 info->flags |= SMPS_OFFSET_EN;
714 break;
715 case TWL6032_REG_VIO:
716 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
717 info->flags |= SMPS_EXTENDED_EN;
718 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
719 info->flags |= SMPS_OFFSET_EN;
720 break;
721 }
722
723 if (of_get_property(np, "ti,retain-on-reset", NULL))
724 info->flags |= TWL_6030_WARM_RESET;
725
726 config.dev = &pdev->dev;
727 config.init_data = initdata;
728 config.driver_data = info;
729 config.of_node = np;
730
731 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
732 if (IS_ERR(rdev)) {
733 dev_err(&pdev->dev, "can't register %s, %ld\n",
734 info->desc.name, PTR_ERR(rdev));
735 return PTR_ERR(rdev);
736 }
737 platform_set_drvdata(pdev, rdev);
738
739 /* NOTE: many regulators support short-circuit IRQs (presentable
740 * as REGULATOR_OVER_CURRENT notifications?) configured via:
741 * - SC_CONFIG
742 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
743 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
744 * - IT_CONFIG
745 */
746
747 return 0;
748 }
749
750 MODULE_ALIAS("platform:twl6030_reg");
751
752 static struct platform_driver twlreg_driver = {
753 .probe = twlreg_probe,
754 /* NOTE: short name, to work around driver model truncation of
755 * "twl_regulator.12" (and friends) to "twl_regulator.1".
756 */
757 .driver = {
758 .name = "twl6030_reg",
759 .of_match_table = of_match_ptr(twl_of_match),
760 },
761 };
762
763 static int __init twlreg_init(void)
764 {
765 return platform_driver_register(&twlreg_driver);
766 }
767 subsys_initcall(twlreg_init);
768
769 static void __exit twlreg_exit(void)
770 {
771 platform_driver_unregister(&twlreg_driver);
772 }
773 module_exit(twlreg_exit)
774
775 MODULE_DESCRIPTION("TWL6030 regulator driver");
776 MODULE_LICENSE("GPL");
Linux with added FPC-III support