1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * twl-regulator.c -- support regulators in twl4030/twl6030 family chips |
4 | * |
5 | * Copyright (C) 2008 David Brownell |
6 | */ |
7 | |
8 | #include <linux/module.h> |
9 | #include <linux/string.h> |
10 | #include <linux/slab.h> |
11 | #include <linux/init.h> |
12 | #include <linux/err.h> |
13 | #include <linux/platform_device.h> |
14 | #include <linux/of.h> |
15 | #include <linux/regulator/driver.h> |
16 | #include <linux/regulator/machine.h> |
17 | #include <linux/regulator/of_regulator.h> |
18 | #include <linux/mfd/twl.h> |
19 | #include <linux/delay.h> |
20 | |
21 | /* |
22 | * The TWL4030/TW5030/TPS659x0 family chips include power management, a |
23 | * USB OTG transceiver, an RTC, ADC, PWM, and lots more. Some versions |
24 | * include an audio codec, battery charger, and more voltage regulators. |
25 | * These chips are often used in OMAP-based systems. |
26 | * |
27 | * This driver implements software-based resource control for various |
28 | * voltage regulators. This is usually augmented with state machine |
29 | * based control. |
30 | */ |
31 | |
32 | struct twlreg_info { |
33 | /* start of regulator's PM_RECEIVER control register bank */ |
34 | u8 base; |
35 | |
36 | /* twl resource ID, for resource control state machine */ |
37 | u8 id; |
38 | |
39 | /* voltage in mV = table[VSEL]; table_len must be a power-of-two */ |
40 | u8 table_len; |
41 | const u16 *table; |
42 | |
43 | /* State REMAP default configuration */ |
44 | u8 remap; |
45 | |
46 | /* used by regulator core */ |
47 | struct regulator_desc desc; |
48 | |
49 | /* chip specific features */ |
50 | unsigned long features; |
51 | |
52 | /* data passed from board for external get/set voltage */ |
53 | void *data; |
54 | }; |
55 | |
56 | |
57 | /* LDO control registers ... offset is from the base of its register bank. |
58 | * The first three registers of all power resource banks help hardware to |
59 | * manage the various resource groups. |
60 | */ |
61 | /* Common offset in TWL4030/6030 */ |
62 | #define VREG_GRP 0 |
63 | /* TWL4030 register offsets */ |
64 | #define VREG_TYPE 1 |
65 | #define VREG_REMAP 2 |
66 | #define VREG_DEDICATED 3 /* LDO control */ |
67 | #define VREG_VOLTAGE_SMPS_4030 9 |
68 | /* TWL6030 register offsets */ |
69 | #define VREG_TRANS 1 |
70 | #define VREG_STATE 2 |
71 | #define VREG_VOLTAGE 3 |
72 | #define VREG_VOLTAGE_SMPS 4 |
73 | |
74 | static inline int |
75 | twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset) |
76 | { |
77 | u8 value; |
78 | int status; |
79 | |
80 | status = twl_i2c_read_u8(mod_no: slave_subgp, |
81 | val: &value, reg: info->base + offset); |
82 | return (status < 0) ? status : value; |
83 | } |
84 | |
85 | static inline int |
86 | twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset, |
87 | u8 value) |
88 | { |
89 | return twl_i2c_write_u8(mod_no: slave_subgp, |
90 | val: value, reg: info->base + offset); |
91 | } |
92 | |
93 | /*----------------------------------------------------------------------*/ |
94 | |
95 | /* generic power resource operations, which work on all regulators */ |
96 | |
97 | static int twlreg_grp(struct regulator_dev *rdev) |
98 | { |
99 | return twlreg_read(info: rdev_get_drvdata(rdev), slave_subgp: TWL_MODULE_PM_RECEIVER, |
100 | VREG_GRP); |
101 | } |
102 | |
103 | /* |
104 | * Enable/disable regulators by joining/leaving the P1 (processor) group. |
105 | * We assume nobody else is updating the DEV_GRP registers. |
106 | */ |
107 | /* definition for 4030 family */ |
108 | #define P3_GRP_4030 BIT(7) /* "peripherals" */ |
109 | #define P2_GRP_4030 BIT(6) /* secondary processor, modem, etc */ |
110 | #define P1_GRP_4030 BIT(5) /* CPU/Linux */ |
111 | /* definition for 6030 family */ |
112 | #define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */ |
113 | #define P2_GRP_6030 BIT(1) /* "peripherals" */ |
114 | #define P1_GRP_6030 BIT(0) /* CPU/Linux */ |
115 | |
116 | static int twl4030reg_is_enabled(struct regulator_dev *rdev) |
117 | { |
118 | int state = twlreg_grp(rdev); |
119 | |
120 | if (state < 0) |
121 | return state; |
122 | |
123 | return state & P1_GRP_4030; |
124 | } |
125 | |
126 | #define PB_I2C_BUSY BIT(0) |
127 | #define PB_I2C_BWEN BIT(1) |
128 | |
129 | /* Wait until buffer empty/ready to send a word on power bus. */ |
130 | static int twl4030_wait_pb_ready(void) |
131 | { |
132 | |
133 | int ret; |
134 | int timeout = 10; |
135 | u8 val; |
136 | |
137 | do { |
138 | ret = twl_i2c_read_u8(mod_no: TWL_MODULE_PM_MASTER, val: &val, |
139 | TWL4030_PM_MASTER_PB_CFG); |
140 | if (ret < 0) |
141 | return ret; |
142 | |
143 | if (!(val & PB_I2C_BUSY)) |
144 | return 0; |
145 | |
146 | mdelay(1); |
147 | timeout--; |
148 | } while (timeout); |
149 | |
150 | return -ETIMEDOUT; |
151 | } |
152 | |
153 | /* Send a word over the powerbus */ |
154 | static int twl4030_send_pb_msg(unsigned msg) |
155 | { |
156 | u8 val; |
157 | int ret; |
158 | |
159 | /* save powerbus configuration */ |
160 | ret = twl_i2c_read_u8(mod_no: TWL_MODULE_PM_MASTER, val: &val, |
161 | TWL4030_PM_MASTER_PB_CFG); |
162 | if (ret < 0) |
163 | return ret; |
164 | |
165 | /* Enable i2c access to powerbus */ |
166 | ret = twl_i2c_write_u8(mod_no: TWL_MODULE_PM_MASTER, val: val | PB_I2C_BWEN, |
167 | TWL4030_PM_MASTER_PB_CFG); |
168 | if (ret < 0) |
169 | return ret; |
170 | |
171 | ret = twl4030_wait_pb_ready(); |
172 | if (ret < 0) |
173 | return ret; |
174 | |
175 | ret = twl_i2c_write_u8(mod_no: TWL_MODULE_PM_MASTER, val: msg >> 8, |
176 | TWL4030_PM_MASTER_PB_WORD_MSB); |
177 | if (ret < 0) |
178 | return ret; |
179 | |
180 | ret = twl_i2c_write_u8(mod_no: TWL_MODULE_PM_MASTER, val: msg & 0xff, |
181 | TWL4030_PM_MASTER_PB_WORD_LSB); |
182 | if (ret < 0) |
183 | return ret; |
184 | |
185 | ret = twl4030_wait_pb_ready(); |
186 | if (ret < 0) |
187 | return ret; |
188 | |
189 | /* Restore powerbus configuration */ |
190 | return twl_i2c_write_u8(mod_no: TWL_MODULE_PM_MASTER, val, |
191 | TWL4030_PM_MASTER_PB_CFG); |
192 | } |
193 | |
194 | static int twl4030reg_enable(struct regulator_dev *rdev) |
195 | { |
196 | struct twlreg_info *info = rdev_get_drvdata(rdev); |
197 | int grp; |
198 | |
199 | grp = twlreg_grp(rdev); |
200 | if (grp < 0) |
201 | return grp; |
202 | |
203 | grp |= P1_GRP_4030; |
204 | |
205 | return twlreg_write(info, slave_subgp: TWL_MODULE_PM_RECEIVER, VREG_GRP, value: grp); |
206 | } |
207 | |
208 | static int twl4030reg_disable(struct regulator_dev *rdev) |
209 | { |
210 | struct twlreg_info *info = rdev_get_drvdata(rdev); |
211 | int grp; |
212 | |
213 | grp = twlreg_grp(rdev); |
214 | if (grp < 0) |
215 | return grp; |
216 | |
217 | grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030); |
218 | |
219 | return twlreg_write(info, slave_subgp: TWL_MODULE_PM_RECEIVER, VREG_GRP, value: grp); |
220 | } |
221 | |
222 | static int twl4030reg_get_status(struct regulator_dev *rdev) |
223 | { |
224 | int state = twlreg_grp(rdev); |
225 | |
226 | if (state < 0) |
227 | return state; |
228 | state &= 0x0f; |
229 | |
230 | /* assume state != WARM_RESET; we'd not be running... */ |
231 | if (!state) |
232 | return REGULATOR_STATUS_OFF; |
233 | return (state & BIT(3)) |
234 | ? REGULATOR_STATUS_NORMAL |
235 | : REGULATOR_STATUS_STANDBY; |
236 | } |
237 | |
238 | static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode) |
239 | { |
240 | struct twlreg_info *info = rdev_get_drvdata(rdev); |
241 | unsigned message; |
242 | |
243 | /* We can only set the mode through state machine commands... */ |
244 | switch (mode) { |
245 | case REGULATOR_MODE_NORMAL: |
246 | message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE); |
247 | break; |
248 | case REGULATOR_MODE_STANDBY: |
249 | message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP); |
250 | break; |
251 | default: |
252 | return -EINVAL; |
253 | } |
254 | |
255 | return twl4030_send_pb_msg(msg: message); |
256 | } |
257 | |
258 | static inline unsigned int twl4030reg_map_mode(unsigned int mode) |
259 | { |
260 | switch (mode) { |
261 | case RES_STATE_ACTIVE: |
262 | return REGULATOR_MODE_NORMAL; |
263 | case RES_STATE_SLEEP: |
264 | return REGULATOR_MODE_STANDBY; |
265 | default: |
266 | return REGULATOR_MODE_INVALID; |
267 | } |
268 | } |
269 | |
270 | /*----------------------------------------------------------------------*/ |
271 | |
272 | /* |
273 | * Support for adjustable-voltage LDOs uses a four bit (or less) voltage |
274 | * select field in its control register. We use tables indexed by VSEL |
275 | * to record voltages in milliVolts. (Accuracy is about three percent.) |
276 | * |
277 | * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon; |
278 | * currently handled by listing two slightly different VAUX2 regulators, |
279 | * only one of which will be configured. |
280 | * |
281 | * VSEL values documented as "TI cannot support these values" are flagged |
282 | * in these tables as UNSUP() values; we normally won't assign them. |
283 | * |
284 | * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported. |
285 | * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting. |
286 | */ |
287 | #define UNSUP_MASK 0x8000 |
288 | |
289 | #define UNSUP(x) (UNSUP_MASK | (x)) |
290 | #define IS_UNSUP(info, x) \ |
291 | ((UNSUP_MASK & (x)) && \ |
292 | !((info)->features & TWL4030_ALLOW_UNSUPPORTED)) |
293 | #define LDO_MV(x) (~UNSUP_MASK & (x)) |
294 | |
295 | |
296 | static const u16 VAUX1_VSEL_table[] = { |
297 | UNSUP(1500), UNSUP(1800), 2500, 2800, |
298 | 3000, 3000, 3000, 3000, |
299 | }; |
300 | static const u16 VAUX2_4030_VSEL_table[] = { |
301 | UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300, |
302 | 1500, 1800, UNSUP(1850), 2500, |
303 | UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000), |
304 | UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), |
305 | }; |
306 | static const u16 VAUX2_VSEL_table[] = { |
307 | 1700, 1700, 1900, 1300, |
308 | 1500, 1800, 2000, 2500, |
309 | 2100, 2800, 2200, 2300, |
310 | 2400, 2400, 2400, 2400, |
311 | }; |
312 | static const u16 VAUX3_VSEL_table[] = { |
313 | 1500, 1800, 2500, 2800, |
314 | 3000, 3000, 3000, 3000, |
315 | }; |
316 | static const u16 VAUX4_VSEL_table[] = { |
317 | 700, 1000, 1200, UNSUP(1300), |
318 | 1500, 1800, UNSUP(1850), 2500, |
319 | UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000), |
320 | UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), |
321 | }; |
322 | static const u16 VMMC1_VSEL_table[] = { |
323 | 1850, 2850, 3000, 3150, |
324 | }; |
325 | static const u16 VMMC2_VSEL_table[] = { |
326 | UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300), |
327 | UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500), |
328 | 2600, 2800, 2850, 3000, |
329 | 3150, 3150, 3150, 3150, |
330 | }; |
331 | static const u16 VPLL1_VSEL_table[] = { |
332 | 1000, 1200, 1300, 1800, |
333 | UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000), |
334 | }; |
335 | static const u16 VPLL2_VSEL_table[] = { |
336 | 700, 1000, 1200, 1300, |
337 | UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500), |
338 | UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000), |
339 | UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150), |
340 | }; |
341 | static const u16 VSIM_VSEL_table[] = { |
342 | UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800, |
343 | 2800, 3000, 3000, 3000, |
344 | }; |
345 | static const u16 VDAC_VSEL_table[] = { |
346 | 1200, 1300, 1800, 1800, |
347 | }; |
348 | static const u16 VIO_VSEL_table[] = { |
349 | 1800, 1850, |
350 | }; |
351 | static const u16 VINTANA2_VSEL_table[] = { |
352 | 2500, 2750, |
353 | }; |
354 | |
355 | /* 600mV to 1450mV in 12.5 mV steps */ |
356 | static const struct linear_range VDD1_ranges[] = { |
357 | REGULATOR_LINEAR_RANGE(600000, 0, 68, 12500) |
358 | }; |
359 | |
360 | /* 600mV to 1450mV in 12.5 mV steps, everything above = 1500mV */ |
361 | static const struct linear_range VDD2_ranges[] = { |
362 | REGULATOR_LINEAR_RANGE(600000, 0, 68, 12500), |
363 | REGULATOR_LINEAR_RANGE(1500000, 69, 69, 12500) |
364 | }; |
365 | |
366 | static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index) |
367 | { |
368 | struct twlreg_info *info = rdev_get_drvdata(rdev); |
369 | int mV = info->table[index]; |
370 | |
371 | return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000); |
372 | } |
373 | |
374 | static int |
375 | twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) |
376 | { |
377 | struct twlreg_info *info = rdev_get_drvdata(rdev); |
378 | |
379 | return twlreg_write(info, slave_subgp: TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, |
380 | value: selector); |
381 | } |
382 | |
383 | static int twl4030ldo_get_voltage_sel(struct regulator_dev *rdev) |
384 | { |
385 | struct twlreg_info *info = rdev_get_drvdata(rdev); |
386 | int vsel = twlreg_read(info, slave_subgp: TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE); |
387 | |
388 | if (vsel < 0) |
389 | return vsel; |
390 | |
391 | vsel &= info->table_len - 1; |
392 | return vsel; |
393 | } |
394 | |
395 | static const struct regulator_ops twl4030ldo_ops = { |
396 | .list_voltage = twl4030ldo_list_voltage, |
397 | |
398 | .set_voltage_sel = twl4030ldo_set_voltage_sel, |
399 | .get_voltage_sel = twl4030ldo_get_voltage_sel, |
400 | |
401 | .enable = twl4030reg_enable, |
402 | .disable = twl4030reg_disable, |
403 | .is_enabled = twl4030reg_is_enabled, |
404 | |
405 | .set_mode = twl4030reg_set_mode, |
406 | |
407 | .get_status = twl4030reg_get_status, |
408 | }; |
409 | |
410 | static int |
411 | twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, |
412 | unsigned *selector) |
413 | { |
414 | struct twlreg_info *info = rdev_get_drvdata(rdev); |
415 | int vsel = DIV_ROUND_UP(min_uV - 600000, 12500); |
416 | |
417 | twlreg_write(info, slave_subgp: TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS_4030, value: vsel); |
418 | |
419 | return 0; |
420 | } |
421 | |
422 | static int twl4030smps_get_voltage(struct regulator_dev *rdev) |
423 | { |
424 | struct twlreg_info *info = rdev_get_drvdata(rdev); |
425 | int vsel; |
426 | |
427 | vsel = twlreg_read(info, slave_subgp: TWL_MODULE_PM_RECEIVER, |
428 | VREG_VOLTAGE_SMPS_4030); |
429 | |
430 | return vsel * 12500 + 600000; |
431 | } |
432 | |
433 | static const struct regulator_ops twl4030smps_ops = { |
434 | .list_voltage = regulator_list_voltage_linear_range, |
435 | |
436 | .set_voltage = twl4030smps_set_voltage, |
437 | .get_voltage = twl4030smps_get_voltage, |
438 | }; |
439 | |
440 | /*----------------------------------------------------------------------*/ |
441 | |
442 | static const struct regulator_ops twl4030fixed_ops = { |
443 | .list_voltage = regulator_list_voltage_linear, |
444 | |
445 | .enable = twl4030reg_enable, |
446 | .disable = twl4030reg_disable, |
447 | .is_enabled = twl4030reg_is_enabled, |
448 | |
449 | .set_mode = twl4030reg_set_mode, |
450 | |
451 | .get_status = twl4030reg_get_status, |
452 | }; |
453 | |
454 | /*----------------------------------------------------------------------*/ |
455 | |
456 | #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \ |
457 | static const struct twlreg_info TWL4030_INFO_##label = { \ |
458 | .base = offset, \ |
459 | .id = num, \ |
460 | .table_len = ARRAY_SIZE(label##_VSEL_table), \ |
461 | .table = label##_VSEL_table, \ |
462 | .remap = remap_conf, \ |
463 | .desc = { \ |
464 | .name = #label, \ |
465 | .id = TWL4030_REG_##label, \ |
466 | .n_voltages = ARRAY_SIZE(label##_VSEL_table), \ |
467 | .ops = &twl4030ldo_ops, \ |
468 | .type = REGULATOR_VOLTAGE, \ |
469 | .owner = THIS_MODULE, \ |
470 | .enable_time = turnon_delay, \ |
471 | .of_map_mode = twl4030reg_map_mode, \ |
472 | }, \ |
473 | } |
474 | |
475 | #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf, \ |
476 | n_volt) \ |
477 | static const struct twlreg_info TWL4030_INFO_##label = { \ |
478 | .base = offset, \ |
479 | .id = num, \ |
480 | .remap = remap_conf, \ |
481 | .desc = { \ |
482 | .name = #label, \ |
483 | .id = TWL4030_REG_##label, \ |
484 | .ops = &twl4030smps_ops, \ |
485 | .type = REGULATOR_VOLTAGE, \ |
486 | .owner = THIS_MODULE, \ |
487 | .enable_time = turnon_delay, \ |
488 | .of_map_mode = twl4030reg_map_mode, \ |
489 | .n_voltages = n_volt, \ |
490 | .n_linear_ranges = ARRAY_SIZE(label ## _ranges), \ |
491 | .linear_ranges = label ## _ranges, \ |
492 | }, \ |
493 | } |
494 | |
495 | #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \ |
496 | remap_conf) \ |
497 | static const struct twlreg_info TWLFIXED_INFO_##label = { \ |
498 | .base = offset, \ |
499 | .id = num, \ |
500 | .remap = remap_conf, \ |
501 | .desc = { \ |
502 | .name = #label, \ |
503 | .id = TWL4030##_REG_##label, \ |
504 | .n_voltages = 1, \ |
505 | .ops = &twl4030fixed_ops, \ |
506 | .type = REGULATOR_VOLTAGE, \ |
507 | .owner = THIS_MODULE, \ |
508 | .min_uV = mVolts * 1000, \ |
509 | .enable_time = turnon_delay, \ |
510 | .of_map_mode = twl4030reg_map_mode, \ |
511 | }, \ |
512 | } |
513 | |
514 | /* |
515 | * We list regulators here if systems need some level of |
516 | * software control over them after boot. |
517 | */ |
518 | TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08); |
519 | TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08); |
520 | TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08); |
521 | TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08); |
522 | TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08); |
523 | TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08); |
524 | TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08); |
525 | TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00); |
526 | TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08); |
527 | TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00); |
528 | TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08); |
529 | TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08); |
530 | TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08); |
531 | TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08, 68); |
532 | TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08, 69); |
533 | /* VUSBCP is managed *only* by the USB subchip */ |
534 | TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08); |
535 | TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08); |
536 | TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08); |
537 | TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08); |
538 | TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08); |
539 | |
540 | #define TWL_OF_MATCH(comp, family, label) \ |
541 | { \ |
542 | .compatible = comp, \ |
543 | .data = &family##_INFO_##label, \ |
544 | } |
545 | |
546 | #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label) |
547 | #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label) |
548 | #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label) |
549 | #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label) |
550 | #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label) |
551 | |
552 | static const struct of_device_id twl_of_match[] = { |
553 | TWL4030_OF_MATCH("ti,twl4030-vaux1" , VAUX1), |
554 | TWL4030_OF_MATCH("ti,twl4030-vaux2" , VAUX2_4030), |
555 | TWL4030_OF_MATCH("ti,twl5030-vaux2" , VAUX2), |
556 | TWL4030_OF_MATCH("ti,twl4030-vaux3" , VAUX3), |
557 | TWL4030_OF_MATCH("ti,twl4030-vaux4" , VAUX4), |
558 | TWL4030_OF_MATCH("ti,twl4030-vmmc1" , VMMC1), |
559 | TWL4030_OF_MATCH("ti,twl4030-vmmc2" , VMMC2), |
560 | TWL4030_OF_MATCH("ti,twl4030-vpll1" , VPLL1), |
561 | TWL4030_OF_MATCH("ti,twl4030-vpll2" , VPLL2), |
562 | TWL4030_OF_MATCH("ti,twl4030-vsim" , VSIM), |
563 | TWL4030_OF_MATCH("ti,twl4030-vdac" , VDAC), |
564 | TWL4030_OF_MATCH("ti,twl4030-vintana2" , VINTANA2), |
565 | TWL4030_OF_MATCH("ti,twl4030-vio" , VIO), |
566 | TWL4030_OF_MATCH("ti,twl4030-vdd1" , VDD1), |
567 | TWL4030_OF_MATCH("ti,twl4030-vdd2" , VDD2), |
568 | TWLFIXED_OF_MATCH("ti,twl4030-vintana1" , VINTANA1), |
569 | TWLFIXED_OF_MATCH("ti,twl4030-vintdig" , VINTDIG), |
570 | TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5" , VUSB1V5), |
571 | TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8" , VUSB1V8), |
572 | TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1" , VUSB3V1), |
573 | {}, |
574 | }; |
575 | MODULE_DEVICE_TABLE(of, twl_of_match); |
576 | |
577 | static int twlreg_probe(struct platform_device *pdev) |
578 | { |
579 | int id; |
580 | struct twlreg_info *info; |
581 | const struct twlreg_info *template; |
582 | struct regulator_init_data *initdata; |
583 | struct regulation_constraints *c; |
584 | struct regulator_dev *rdev; |
585 | struct regulator_config config = { }; |
586 | |
587 | template = of_device_get_match_data(dev: &pdev->dev); |
588 | if (!template) |
589 | return -ENODEV; |
590 | |
591 | id = template->desc.id; |
592 | initdata = of_get_regulator_init_data(dev: &pdev->dev, node: pdev->dev.of_node, |
593 | desc: &template->desc); |
594 | if (!initdata) |
595 | return -EINVAL; |
596 | |
597 | info = devm_kmemdup(dev: &pdev->dev, src: template, len: sizeof(*info), GFP_KERNEL); |
598 | if (!info) |
599 | return -ENOMEM; |
600 | |
601 | /* Constrain board-specific capabilities according to what |
602 | * this driver and the chip itself can actually do. |
603 | */ |
604 | c = &initdata->constraints; |
605 | c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY; |
606 | c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE |
607 | | REGULATOR_CHANGE_MODE |
608 | | REGULATOR_CHANGE_STATUS; |
609 | switch (id) { |
610 | case TWL4030_REG_VIO: |
611 | case TWL4030_REG_VDD1: |
612 | case TWL4030_REG_VDD2: |
613 | case TWL4030_REG_VPLL1: |
614 | case TWL4030_REG_VINTANA1: |
615 | case TWL4030_REG_VINTANA2: |
616 | case TWL4030_REG_VINTDIG: |
617 | c->always_on = true; |
618 | break; |
619 | default: |
620 | break; |
621 | } |
622 | |
623 | config.dev = &pdev->dev; |
624 | config.init_data = initdata; |
625 | config.driver_data = info; |
626 | config.of_node = pdev->dev.of_node; |
627 | |
628 | rdev = devm_regulator_register(dev: &pdev->dev, regulator_desc: &info->desc, config: &config); |
629 | if (IS_ERR(ptr: rdev)) { |
630 | dev_err(&pdev->dev, "can't register %s, %ld\n" , |
631 | info->desc.name, PTR_ERR(rdev)); |
632 | return PTR_ERR(ptr: rdev); |
633 | } |
634 | platform_set_drvdata(pdev, data: rdev); |
635 | |
636 | twlreg_write(info, slave_subgp: TWL_MODULE_PM_RECEIVER, VREG_REMAP, value: info->remap); |
637 | |
638 | /* NOTE: many regulators support short-circuit IRQs (presentable |
639 | * as REGULATOR_OVER_CURRENT notifications?) configured via: |
640 | * - SC_CONFIG |
641 | * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4) |
642 | * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2) |
643 | * - IT_CONFIG |
644 | */ |
645 | |
646 | return 0; |
647 | } |
648 | |
649 | MODULE_ALIAS("platform:twl4030_reg" ); |
650 | |
651 | static struct platform_driver twlreg_driver = { |
652 | .probe = twlreg_probe, |
653 | /* NOTE: short name, to work around driver model truncation of |
654 | * "twl_regulator.12" (and friends) to "twl_regulator.1". |
655 | */ |
656 | .driver = { |
657 | .name = "twl4030_reg" , |
658 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
659 | .of_match_table = of_match_ptr(twl_of_match), |
660 | }, |
661 | }; |
662 | |
663 | static int __init twlreg_init(void) |
664 | { |
665 | return platform_driver_register(&twlreg_driver); |
666 | } |
667 | subsys_initcall(twlreg_init); |
668 | |
669 | static void __exit twlreg_exit(void) |
670 | { |
671 | platform_driver_unregister(&twlreg_driver); |
672 | } |
673 | module_exit(twlreg_exit) |
674 | |
675 | MODULE_DESCRIPTION("TWL4030 regulator driver" ); |
676 | MODULE_LICENSE("GPL" ); |
677 | |