1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Voltage regulator support for AMS AS3722 PMIC
4 *
5 * Copyright (C) 2013 ams
6 *
7 * Author: Florian Lobmaier <florian.lobmaier@ams.com>
8 * Author: Laxman Dewangan <ldewangan@nvidia.com>
9 */
10
11 #include <linux/err.h>
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/mfd/as3722.h>
15 #include <linux/of.h>
16 #include <linux/of_platform.h>
17 #include <linux/platform_device.h>
18 #include <linux/regulator/driver.h>
19 #include <linux/regulator/machine.h>
20 #include <linux/regulator/of_regulator.h>
21 #include <linux/slab.h>
22
23 /* Regulator IDs */
24 enum as3722_regulators_id {
25 AS3722_REGULATOR_ID_SD0,
26 AS3722_REGULATOR_ID_SD1,
27 AS3722_REGULATOR_ID_SD2,
28 AS3722_REGULATOR_ID_SD3,
29 AS3722_REGULATOR_ID_SD4,
30 AS3722_REGULATOR_ID_SD5,
31 AS3722_REGULATOR_ID_SD6,
32 AS3722_REGULATOR_ID_LDO0,
33 AS3722_REGULATOR_ID_LDO1,
34 AS3722_REGULATOR_ID_LDO2,
35 AS3722_REGULATOR_ID_LDO3,
36 AS3722_REGULATOR_ID_LDO4,
37 AS3722_REGULATOR_ID_LDO5,
38 AS3722_REGULATOR_ID_LDO6,
39 AS3722_REGULATOR_ID_LDO7,
40 AS3722_REGULATOR_ID_LDO9,
41 AS3722_REGULATOR_ID_LDO10,
42 AS3722_REGULATOR_ID_LDO11,
43 AS3722_REGULATOR_ID_MAX,
44 };
45
46 struct as3722_register_mapping {
47 u8 regulator_id;
48 const char *name;
49 const char *sname;
50 u8 vsel_reg;
51 u8 vsel_mask;
52 int n_voltages;
53 u32 enable_reg;
54 u8 enable_mask;
55 u32 control_reg;
56 u8 mode_mask;
57 u32 sleep_ctrl_reg;
58 u8 sleep_ctrl_mask;
59 };
60
61 struct as3722_regulator_config_data {
62 struct regulator_init_data *reg_init;
63 bool enable_tracking;
64 int ext_control;
65 };
66
67 struct as3722_regulators {
68 struct device *dev;
69 struct as3722 *as3722;
70 struct regulator_desc desc[AS3722_REGULATOR_ID_MAX];
71 struct as3722_regulator_config_data
72 reg_config_data[AS3722_REGULATOR_ID_MAX];
73 };
74
75 static const struct as3722_register_mapping as3722_reg_lookup[] = {
76 {
77 .regulator_id = AS3722_REGULATOR_ID_SD0,
78 .name = "as3722-sd0",
79 .vsel_reg = AS3722_SD0_VOLTAGE_REG,
80 .vsel_mask = AS3722_SD_VSEL_MASK,
81 .enable_reg = AS3722_SD_CONTROL_REG,
82 .enable_mask = AS3722_SDn_CTRL(0),
83 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
84 .sleep_ctrl_mask = AS3722_SD0_EXT_ENABLE_MASK,
85 .control_reg = AS3722_SD0_CONTROL_REG,
86 .mode_mask = AS3722_SD0_MODE_FAST,
87 },
88 {
89 .regulator_id = AS3722_REGULATOR_ID_SD1,
90 .name = "as3722-sd1",
91 .vsel_reg = AS3722_SD1_VOLTAGE_REG,
92 .vsel_mask = AS3722_SD_VSEL_MASK,
93 .enable_reg = AS3722_SD_CONTROL_REG,
94 .enable_mask = AS3722_SDn_CTRL(1),
95 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
96 .sleep_ctrl_mask = AS3722_SD1_EXT_ENABLE_MASK,
97 .control_reg = AS3722_SD1_CONTROL_REG,
98 .mode_mask = AS3722_SD1_MODE_FAST,
99 },
100 {
101 .regulator_id = AS3722_REGULATOR_ID_SD2,
102 .name = "as3722-sd2",
103 .sname = "vsup-sd2",
104 .vsel_reg = AS3722_SD2_VOLTAGE_REG,
105 .vsel_mask = AS3722_SD_VSEL_MASK,
106 .enable_reg = AS3722_SD_CONTROL_REG,
107 .enable_mask = AS3722_SDn_CTRL(2),
108 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
109 .sleep_ctrl_mask = AS3722_SD2_EXT_ENABLE_MASK,
110 .control_reg = AS3722_SD23_CONTROL_REG,
111 .mode_mask = AS3722_SD2_MODE_FAST,
112 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
113 },
114 {
115 .regulator_id = AS3722_REGULATOR_ID_SD3,
116 .name = "as3722-sd3",
117 .sname = "vsup-sd3",
118 .vsel_reg = AS3722_SD3_VOLTAGE_REG,
119 .vsel_mask = AS3722_SD_VSEL_MASK,
120 .enable_reg = AS3722_SD_CONTROL_REG,
121 .enable_mask = AS3722_SDn_CTRL(3),
122 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
123 .sleep_ctrl_mask = AS3722_SD3_EXT_ENABLE_MASK,
124 .control_reg = AS3722_SD23_CONTROL_REG,
125 .mode_mask = AS3722_SD3_MODE_FAST,
126 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
127 },
128 {
129 .regulator_id = AS3722_REGULATOR_ID_SD4,
130 .name = "as3722-sd4",
131 .sname = "vsup-sd4",
132 .vsel_reg = AS3722_SD4_VOLTAGE_REG,
133 .vsel_mask = AS3722_SD_VSEL_MASK,
134 .enable_reg = AS3722_SD_CONTROL_REG,
135 .enable_mask = AS3722_SDn_CTRL(4),
136 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
137 .sleep_ctrl_mask = AS3722_SD4_EXT_ENABLE_MASK,
138 .control_reg = AS3722_SD4_CONTROL_REG,
139 .mode_mask = AS3722_SD4_MODE_FAST,
140 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
141 },
142 {
143 .regulator_id = AS3722_REGULATOR_ID_SD5,
144 .name = "as3722-sd5",
145 .sname = "vsup-sd5",
146 .vsel_reg = AS3722_SD5_VOLTAGE_REG,
147 .vsel_mask = AS3722_SD_VSEL_MASK,
148 .enable_reg = AS3722_SD_CONTROL_REG,
149 .enable_mask = AS3722_SDn_CTRL(5),
150 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
151 .sleep_ctrl_mask = AS3722_SD5_EXT_ENABLE_MASK,
152 .control_reg = AS3722_SD5_CONTROL_REG,
153 .mode_mask = AS3722_SD5_MODE_FAST,
154 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
155 },
156 {
157 .regulator_id = AS3722_REGULATOR_ID_SD6,
158 .name = "as3722-sd6",
159 .vsel_reg = AS3722_SD6_VOLTAGE_REG,
160 .vsel_mask = AS3722_SD_VSEL_MASK,
161 .enable_reg = AS3722_SD_CONTROL_REG,
162 .enable_mask = AS3722_SDn_CTRL(6),
163 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
164 .sleep_ctrl_mask = AS3722_SD6_EXT_ENABLE_MASK,
165 .control_reg = AS3722_SD6_CONTROL_REG,
166 .mode_mask = AS3722_SD6_MODE_FAST,
167 },
168 {
169 .regulator_id = AS3722_REGULATOR_ID_LDO0,
170 .name = "as3722-ldo0",
171 .sname = "vin-ldo0",
172 .vsel_reg = AS3722_LDO0_VOLTAGE_REG,
173 .vsel_mask = AS3722_LDO0_VSEL_MASK,
174 .enable_reg = AS3722_LDOCONTROL0_REG,
175 .enable_mask = AS3722_LDO0_CTRL,
176 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
177 .sleep_ctrl_mask = AS3722_LDO0_EXT_ENABLE_MASK,
178 .n_voltages = AS3722_LDO0_NUM_VOLT,
179 },
180 {
181 .regulator_id = AS3722_REGULATOR_ID_LDO1,
182 .name = "as3722-ldo1",
183 .sname = "vin-ldo1-6",
184 .vsel_reg = AS3722_LDO1_VOLTAGE_REG,
185 .vsel_mask = AS3722_LDO_VSEL_MASK,
186 .enable_reg = AS3722_LDOCONTROL0_REG,
187 .enable_mask = AS3722_LDO1_CTRL,
188 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
189 .sleep_ctrl_mask = AS3722_LDO1_EXT_ENABLE_MASK,
190 .n_voltages = AS3722_LDO_NUM_VOLT,
191 },
192 {
193 .regulator_id = AS3722_REGULATOR_ID_LDO2,
194 .name = "as3722-ldo2",
195 .sname = "vin-ldo2-5-7",
196 .vsel_reg = AS3722_LDO2_VOLTAGE_REG,
197 .vsel_mask = AS3722_LDO_VSEL_MASK,
198 .enable_reg = AS3722_LDOCONTROL0_REG,
199 .enable_mask = AS3722_LDO2_CTRL,
200 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
201 .sleep_ctrl_mask = AS3722_LDO2_EXT_ENABLE_MASK,
202 .n_voltages = AS3722_LDO_NUM_VOLT,
203 },
204 {
205 .regulator_id = AS3722_REGULATOR_ID_LDO3,
206 .name = "as3722-ldo3",
207 .sname = "vin-ldo3-4",
208 .vsel_reg = AS3722_LDO3_VOLTAGE_REG,
209 .vsel_mask = AS3722_LDO3_VSEL_MASK,
210 .enable_reg = AS3722_LDOCONTROL0_REG,
211 .enable_mask = AS3722_LDO3_CTRL,
212 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
213 .sleep_ctrl_mask = AS3722_LDO3_EXT_ENABLE_MASK,
214 .n_voltages = AS3722_LDO3_NUM_VOLT,
215 },
216 {
217 .regulator_id = AS3722_REGULATOR_ID_LDO4,
218 .name = "as3722-ldo4",
219 .sname = "vin-ldo3-4",
220 .vsel_reg = AS3722_LDO4_VOLTAGE_REG,
221 .vsel_mask = AS3722_LDO_VSEL_MASK,
222 .enable_reg = AS3722_LDOCONTROL0_REG,
223 .enable_mask = AS3722_LDO4_CTRL,
224 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
225 .sleep_ctrl_mask = AS3722_LDO4_EXT_ENABLE_MASK,
226 .n_voltages = AS3722_LDO_NUM_VOLT,
227 },
228 {
229 .regulator_id = AS3722_REGULATOR_ID_LDO5,
230 .name = "as3722-ldo5",
231 .sname = "vin-ldo2-5-7",
232 .vsel_reg = AS3722_LDO5_VOLTAGE_REG,
233 .vsel_mask = AS3722_LDO_VSEL_MASK,
234 .enable_reg = AS3722_LDOCONTROL0_REG,
235 .enable_mask = AS3722_LDO5_CTRL,
236 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
237 .sleep_ctrl_mask = AS3722_LDO5_EXT_ENABLE_MASK,
238 .n_voltages = AS3722_LDO_NUM_VOLT,
239 },
240 {
241 .regulator_id = AS3722_REGULATOR_ID_LDO6,
242 .name = "as3722-ldo6",
243 .sname = "vin-ldo1-6",
244 .vsel_reg = AS3722_LDO6_VOLTAGE_REG,
245 .vsel_mask = AS3722_LDO_VSEL_MASK,
246 .enable_reg = AS3722_LDOCONTROL0_REG,
247 .enable_mask = AS3722_LDO6_CTRL,
248 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
249 .sleep_ctrl_mask = AS3722_LDO6_EXT_ENABLE_MASK,
250 .n_voltages = AS3722_LDO_NUM_VOLT,
251 },
252 {
253 .regulator_id = AS3722_REGULATOR_ID_LDO7,
254 .name = "as3722-ldo7",
255 .sname = "vin-ldo2-5-7",
256 .vsel_reg = AS3722_LDO7_VOLTAGE_REG,
257 .vsel_mask = AS3722_LDO_VSEL_MASK,
258 .enable_reg = AS3722_LDOCONTROL0_REG,
259 .enable_mask = AS3722_LDO7_CTRL,
260 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
261 .sleep_ctrl_mask = AS3722_LDO7_EXT_ENABLE_MASK,
262 .n_voltages = AS3722_LDO_NUM_VOLT,
263 },
264 {
265 .regulator_id = AS3722_REGULATOR_ID_LDO9,
266 .name = "as3722-ldo9",
267 .sname = "vin-ldo9-10",
268 .vsel_reg = AS3722_LDO9_VOLTAGE_REG,
269 .vsel_mask = AS3722_LDO_VSEL_MASK,
270 .enable_reg = AS3722_LDOCONTROL1_REG,
271 .enable_mask = AS3722_LDO9_CTRL,
272 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
273 .sleep_ctrl_mask = AS3722_LDO9_EXT_ENABLE_MASK,
274 .n_voltages = AS3722_LDO_NUM_VOLT,
275 },
276 {
277 .regulator_id = AS3722_REGULATOR_ID_LDO10,
278 .name = "as3722-ldo10",
279 .sname = "vin-ldo9-10",
280 .vsel_reg = AS3722_LDO10_VOLTAGE_REG,
281 .vsel_mask = AS3722_LDO_VSEL_MASK,
282 .enable_reg = AS3722_LDOCONTROL1_REG,
283 .enable_mask = AS3722_LDO10_CTRL,
284 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
285 .sleep_ctrl_mask = AS3722_LDO10_EXT_ENABLE_MASK,
286 .n_voltages = AS3722_LDO_NUM_VOLT,
287 },
288 {
289 .regulator_id = AS3722_REGULATOR_ID_LDO11,
290 .name = "as3722-ldo11",
291 .sname = "vin-ldo11",
292 .vsel_reg = AS3722_LDO11_VOLTAGE_REG,
293 .vsel_mask = AS3722_LDO_VSEL_MASK,
294 .enable_reg = AS3722_LDOCONTROL1_REG,
295 .enable_mask = AS3722_LDO11_CTRL,
296 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
297 .sleep_ctrl_mask = AS3722_LDO11_EXT_ENABLE_MASK,
298 .n_voltages = AS3722_LDO_NUM_VOLT,
299 },
300 };
301
302 static const unsigned int as3722_ldo_current[] = { 150000, 300000 };
303 static const unsigned int as3722_sd016_current[] = {
304 2500000, 3000000, 3500000
305 };
306
307 static const struct regulator_ops as3722_ldo0_ops = {
308 .is_enabled = regulator_is_enabled_regmap,
309 .enable = regulator_enable_regmap,
310 .disable = regulator_disable_regmap,
311 .list_voltage = regulator_list_voltage_linear,
312 .get_voltage_sel = regulator_get_voltage_sel_regmap,
313 .set_voltage_sel = regulator_set_voltage_sel_regmap,
314 .get_current_limit = regulator_get_current_limit_regmap,
315 .set_current_limit = regulator_set_current_limit_regmap,
316 };
317
318 static const struct regulator_ops as3722_ldo0_extcntrl_ops = {
319 .list_voltage = regulator_list_voltage_linear,
320 .get_voltage_sel = regulator_get_voltage_sel_regmap,
321 .set_voltage_sel = regulator_set_voltage_sel_regmap,
322 .get_current_limit = regulator_get_current_limit_regmap,
323 .set_current_limit = regulator_set_current_limit_regmap,
324 };
325
as3722_ldo3_set_tracking_mode(struct as3722_regulators * as3722_reg,int id,u8 mode)326 static int as3722_ldo3_set_tracking_mode(struct as3722_regulators *as3722_reg,
327 int id, u8 mode)
328 {
329 struct as3722 *as3722 = as3722_reg->as3722;
330
331 switch (mode) {
332 case AS3722_LDO3_MODE_PMOS:
333 case AS3722_LDO3_MODE_PMOS_TRACKING:
334 case AS3722_LDO3_MODE_NMOS:
335 case AS3722_LDO3_MODE_SWITCH:
336 return as3722_update_bits(as3722,
337 as3722_reg_lookup[id].vsel_reg,
338 AS3722_LDO3_MODE_MASK, mode);
339
340 default:
341 return -EINVAL;
342 }
343 }
344
as3722_ldo3_get_current_limit(struct regulator_dev * rdev)345 static int as3722_ldo3_get_current_limit(struct regulator_dev *rdev)
346 {
347 return 150000;
348 }
349
350 static const struct regulator_ops as3722_ldo3_ops = {
351 .is_enabled = regulator_is_enabled_regmap,
352 .enable = regulator_enable_regmap,
353 .disable = regulator_disable_regmap,
354 .list_voltage = regulator_list_voltage_linear,
355 .get_voltage_sel = regulator_get_voltage_sel_regmap,
356 .set_voltage_sel = regulator_set_voltage_sel_regmap,
357 .get_current_limit = as3722_ldo3_get_current_limit,
358 };
359
360 static const struct regulator_ops as3722_ldo3_extcntrl_ops = {
361 .list_voltage = regulator_list_voltage_linear,
362 .get_voltage_sel = regulator_get_voltage_sel_regmap,
363 .set_voltage_sel = regulator_set_voltage_sel_regmap,
364 .get_current_limit = as3722_ldo3_get_current_limit,
365 };
366
367 static const struct regulator_ops as3722_ldo6_ops = {
368 .is_enabled = regulator_is_enabled_regmap,
369 .enable = regulator_enable_regmap,
370 .disable = regulator_disable_regmap,
371 .map_voltage = regulator_map_voltage_linear_range,
372 .set_voltage_sel = regulator_set_voltage_sel_regmap,
373 .get_voltage_sel = regulator_get_voltage_sel_regmap,
374 .list_voltage = regulator_list_voltage_linear_range,
375 .get_current_limit = regulator_get_current_limit_regmap,
376 .set_current_limit = regulator_set_current_limit_regmap,
377 .get_bypass = regulator_get_bypass_regmap,
378 .set_bypass = regulator_set_bypass_regmap,
379 };
380
381 static const struct regulator_ops as3722_ldo6_extcntrl_ops = {
382 .map_voltage = regulator_map_voltage_linear_range,
383 .set_voltage_sel = regulator_set_voltage_sel_regmap,
384 .get_voltage_sel = regulator_get_voltage_sel_regmap,
385 .list_voltage = regulator_list_voltage_linear_range,
386 .get_current_limit = regulator_get_current_limit_regmap,
387 .set_current_limit = regulator_set_current_limit_regmap,
388 .get_bypass = regulator_get_bypass_regmap,
389 .set_bypass = regulator_set_bypass_regmap,
390 };
391
392 static const struct linear_range as3722_ldo_ranges[] = {
393 REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0),
394 REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000),
395 REGULATOR_LINEAR_RANGE(1725000, 0x40, 0x7F, 25000),
396 };
397
398 static const struct regulator_ops as3722_ldo_ops = {
399 .is_enabled = regulator_is_enabled_regmap,
400 .enable = regulator_enable_regmap,
401 .disable = regulator_disable_regmap,
402 .map_voltage = regulator_map_voltage_linear_range,
403 .set_voltage_sel = regulator_set_voltage_sel_regmap,
404 .get_voltage_sel = regulator_get_voltage_sel_regmap,
405 .list_voltage = regulator_list_voltage_linear_range,
406 .get_current_limit = regulator_get_current_limit_regmap,
407 .set_current_limit = regulator_set_current_limit_regmap,
408 };
409
410 static const struct regulator_ops as3722_ldo_extcntrl_ops = {
411 .map_voltage = regulator_map_voltage_linear_range,
412 .set_voltage_sel = regulator_set_voltage_sel_regmap,
413 .get_voltage_sel = regulator_get_voltage_sel_regmap,
414 .list_voltage = regulator_list_voltage_linear_range,
415 .get_current_limit = regulator_get_current_limit_regmap,
416 .set_current_limit = regulator_set_current_limit_regmap,
417 };
418
as3722_sd_get_mode(struct regulator_dev * rdev)419 static unsigned int as3722_sd_get_mode(struct regulator_dev *rdev)
420 {
421 struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
422 struct as3722 *as3722 = as3722_regs->as3722;
423 int id = rdev_get_id(rdev);
424 u32 val;
425 int ret;
426
427 if (!as3722_reg_lookup[id].control_reg)
428 return -ENOTSUPP;
429
430 ret = as3722_read(as3722, as3722_reg_lookup[id].control_reg, &val);
431 if (ret < 0) {
432 dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
433 as3722_reg_lookup[id].control_reg, ret);
434 return ret;
435 }
436
437 if (val & as3722_reg_lookup[id].mode_mask)
438 return REGULATOR_MODE_FAST;
439 else
440 return REGULATOR_MODE_NORMAL;
441 }
442
as3722_sd_set_mode(struct regulator_dev * rdev,unsigned int mode)443 static int as3722_sd_set_mode(struct regulator_dev *rdev,
444 unsigned int mode)
445 {
446 struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
447 struct as3722 *as3722 = as3722_regs->as3722;
448 u8 id = rdev_get_id(rdev);
449 u8 val = 0;
450 int ret;
451
452 if (!as3722_reg_lookup[id].control_reg)
453 return -ERANGE;
454
455 switch (mode) {
456 case REGULATOR_MODE_FAST:
457 val = as3722_reg_lookup[id].mode_mask;
458 fallthrough;
459 case REGULATOR_MODE_NORMAL:
460 break;
461 default:
462 return -EINVAL;
463 }
464
465 ret = as3722_update_bits(as3722, as3722_reg_lookup[id].control_reg,
466 as3722_reg_lookup[id].mode_mask, val);
467 if (ret < 0) {
468 dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
469 as3722_reg_lookup[id].control_reg, ret);
470 return ret;
471 }
472 return ret;
473 }
474
as3722_sd0_is_low_voltage(struct as3722_regulators * as3722_regs)475 static bool as3722_sd0_is_low_voltage(struct as3722_regulators *as3722_regs)
476 {
477 int err;
478 unsigned val;
479
480 err = as3722_read(as3722_regs->as3722, AS3722_FUSE7_REG, &val);
481 if (err < 0) {
482 dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
483 AS3722_FUSE7_REG, err);
484 return false;
485 }
486 if (val & AS3722_FUSE7_SD0_LOW_VOLTAGE)
487 return true;
488 return false;
489 }
490
491 static const struct linear_range as3722_sd2345_ranges[] = {
492 REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0),
493 REGULATOR_LINEAR_RANGE(612500, 0x01, 0x40, 12500),
494 REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000),
495 REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7F, 50000),
496 };
497
498 static const struct regulator_ops as3722_sd016_ops = {
499 .is_enabled = regulator_is_enabled_regmap,
500 .enable = regulator_enable_regmap,
501 .disable = regulator_disable_regmap,
502 .list_voltage = regulator_list_voltage_linear,
503 .map_voltage = regulator_map_voltage_linear,
504 .get_voltage_sel = regulator_get_voltage_sel_regmap,
505 .set_voltage_sel = regulator_set_voltage_sel_regmap,
506 .get_current_limit = regulator_get_current_limit_regmap,
507 .set_current_limit = regulator_set_current_limit_regmap,
508 .get_mode = as3722_sd_get_mode,
509 .set_mode = as3722_sd_set_mode,
510 };
511
512 static const struct regulator_ops as3722_sd016_extcntrl_ops = {
513 .list_voltage = regulator_list_voltage_linear,
514 .map_voltage = regulator_map_voltage_linear,
515 .get_voltage_sel = regulator_get_voltage_sel_regmap,
516 .set_voltage_sel = regulator_set_voltage_sel_regmap,
517 .get_current_limit = regulator_get_current_limit_regmap,
518 .set_current_limit = regulator_set_current_limit_regmap,
519 .get_mode = as3722_sd_get_mode,
520 .set_mode = as3722_sd_set_mode,
521 };
522
523 static const struct regulator_ops as3722_sd2345_ops = {
524 .is_enabled = regulator_is_enabled_regmap,
525 .enable = regulator_enable_regmap,
526 .disable = regulator_disable_regmap,
527 .list_voltage = regulator_list_voltage_linear_range,
528 .map_voltage = regulator_map_voltage_linear_range,
529 .set_voltage_sel = regulator_set_voltage_sel_regmap,
530 .get_voltage_sel = regulator_get_voltage_sel_regmap,
531 .get_mode = as3722_sd_get_mode,
532 .set_mode = as3722_sd_set_mode,
533 };
534
535 static const struct regulator_ops as3722_sd2345_extcntrl_ops = {
536 .list_voltage = regulator_list_voltage_linear_range,
537 .map_voltage = regulator_map_voltage_linear_range,
538 .set_voltage_sel = regulator_set_voltage_sel_regmap,
539 .get_voltage_sel = regulator_get_voltage_sel_regmap,
540 .get_mode = as3722_sd_get_mode,
541 .set_mode = as3722_sd_set_mode,
542 };
543
as3722_extreg_init(struct as3722_regulators * as3722_regs,int id,int ext_pwr_ctrl)544 static int as3722_extreg_init(struct as3722_regulators *as3722_regs, int id,
545 int ext_pwr_ctrl)
546 {
547 int ret;
548 unsigned int val;
549
550 if ((ext_pwr_ctrl < AS3722_EXT_CONTROL_ENABLE1) ||
551 (ext_pwr_ctrl > AS3722_EXT_CONTROL_ENABLE3))
552 return -EINVAL;
553
554 val = ext_pwr_ctrl << (ffs(as3722_reg_lookup[id].sleep_ctrl_mask) - 1);
555 ret = as3722_update_bits(as3722_regs->as3722,
556 as3722_reg_lookup[id].sleep_ctrl_reg,
557 as3722_reg_lookup[id].sleep_ctrl_mask, val);
558 if (ret < 0)
559 dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
560 as3722_reg_lookup[id].sleep_ctrl_reg, ret);
561 return ret;
562 }
563
564 static struct of_regulator_match as3722_regulator_matches[] = {
565 { .name = "sd0", },
566 { .name = "sd1", },
567 { .name = "sd2", },
568 { .name = "sd3", },
569 { .name = "sd4", },
570 { .name = "sd5", },
571 { .name = "sd6", },
572 { .name = "ldo0", },
573 { .name = "ldo1", },
574 { .name = "ldo2", },
575 { .name = "ldo3", },
576 { .name = "ldo4", },
577 { .name = "ldo5", },
578 { .name = "ldo6", },
579 { .name = "ldo7", },
580 { .name = "ldo9", },
581 { .name = "ldo10", },
582 { .name = "ldo11", },
583 };
584
as3722_get_regulator_dt_data(struct platform_device * pdev,struct as3722_regulators * as3722_regs)585 static int as3722_get_regulator_dt_data(struct platform_device *pdev,
586 struct as3722_regulators *as3722_regs)
587 {
588 struct device_node *np;
589 struct as3722_regulator_config_data *reg_config;
590 u32 prop;
591 int id;
592 int ret;
593
594 np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
595 if (!np) {
596 dev_err(&pdev->dev, "Device is not having regulators node\n");
597 return -ENODEV;
598 }
599 pdev->dev.of_node = np;
600
601 ret = of_regulator_match(&pdev->dev, np, as3722_regulator_matches,
602 ARRAY_SIZE(as3722_regulator_matches));
603 of_node_put(np);
604 if (ret < 0) {
605 dev_err(&pdev->dev, "Parsing of regulator node failed: %d\n",
606 ret);
607 return ret;
608 }
609
610 for (id = 0; id < ARRAY_SIZE(as3722_regulator_matches); ++id) {
611 struct device_node *reg_node;
612
613 reg_config = &as3722_regs->reg_config_data[id];
614 reg_config->reg_init = as3722_regulator_matches[id].init_data;
615 reg_node = as3722_regulator_matches[id].of_node;
616
617 if (!reg_config->reg_init || !reg_node)
618 continue;
619
620 ret = of_property_read_u32(reg_node, "ams,ext-control", &prop);
621 if (!ret) {
622 if (prop < 3)
623 reg_config->ext_control = prop;
624 else
625 dev_warn(&pdev->dev,
626 "ext-control have invalid option: %u\n",
627 prop);
628 }
629 reg_config->enable_tracking =
630 of_property_read_bool(reg_node, "ams,enable-tracking");
631 }
632 return 0;
633 }
634
as3722_regulator_probe(struct platform_device * pdev)635 static int as3722_regulator_probe(struct platform_device *pdev)
636 {
637 struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent);
638 struct as3722_regulators *as3722_regs;
639 struct as3722_regulator_config_data *reg_config;
640 struct regulator_dev *rdev;
641 struct regulator_config config = { };
642 const struct regulator_ops *ops;
643 int id;
644 int ret;
645
646 as3722_regs = devm_kzalloc(&pdev->dev, sizeof(*as3722_regs),
647 GFP_KERNEL);
648 if (!as3722_regs)
649 return -ENOMEM;
650
651 as3722_regs->dev = &pdev->dev;
652 as3722_regs->as3722 = as3722;
653 platform_set_drvdata(pdev, as3722_regs);
654
655 ret = as3722_get_regulator_dt_data(pdev, as3722_regs);
656 if (ret < 0)
657 return ret;
658
659 config.dev = &pdev->dev;
660 config.driver_data = as3722_regs;
661 config.regmap = as3722->regmap;
662
663 for (id = 0; id < AS3722_REGULATOR_ID_MAX; id++) {
664 struct regulator_desc *desc;
665
666 desc = &as3722_regs->desc[id];
667 reg_config = &as3722_regs->reg_config_data[id];
668
669 desc->name = as3722_reg_lookup[id].name;
670 desc->supply_name = as3722_reg_lookup[id].sname;
671 desc->id = as3722_reg_lookup[id].regulator_id;
672 desc->n_voltages = as3722_reg_lookup[id].n_voltages;
673 desc->type = REGULATOR_VOLTAGE;
674 desc->owner = THIS_MODULE;
675 desc->enable_reg = as3722_reg_lookup[id].enable_reg;
676 desc->enable_mask = as3722_reg_lookup[id].enable_mask;
677 desc->vsel_reg = as3722_reg_lookup[id].vsel_reg;
678 desc->vsel_mask = as3722_reg_lookup[id].vsel_mask;
679 switch (id) {
680 case AS3722_REGULATOR_ID_LDO0:
681 if (reg_config->ext_control)
682 ops = &as3722_ldo0_extcntrl_ops;
683 else
684 ops = &as3722_ldo0_ops;
685 desc->min_uV = 825000;
686 desc->uV_step = 25000;
687 desc->linear_min_sel = 1;
688 desc->enable_time = 500;
689 desc->curr_table = as3722_ldo_current;
690 desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current);
691 desc->csel_reg = as3722_reg_lookup[id].vsel_reg;
692 desc->csel_mask = AS3722_LDO_ILIMIT_MASK;
693 break;
694 case AS3722_REGULATOR_ID_LDO3:
695 if (reg_config->ext_control)
696 ops = &as3722_ldo3_extcntrl_ops;
697 else
698 ops = &as3722_ldo3_ops;
699 desc->min_uV = 620000;
700 desc->uV_step = 20000;
701 desc->linear_min_sel = 1;
702 desc->enable_time = 500;
703 if (reg_config->enable_tracking) {
704 ret = as3722_ldo3_set_tracking_mode(as3722_regs,
705 id, AS3722_LDO3_MODE_PMOS_TRACKING);
706 if (ret < 0) {
707 dev_err(&pdev->dev,
708 "LDO3 tracking failed: %d\n",
709 ret);
710 return ret;
711 }
712 }
713 break;
714 case AS3722_REGULATOR_ID_LDO6:
715 if (reg_config->ext_control)
716 ops = &as3722_ldo6_extcntrl_ops;
717 else
718 ops = &as3722_ldo6_ops;
719 desc->enable_time = 500;
720 desc->bypass_reg = AS3722_LDO6_VOLTAGE_REG;
721 desc->bypass_mask = AS3722_LDO_VSEL_MASK;
722 desc->bypass_val_on = AS3722_LDO6_VSEL_BYPASS;
723 desc->bypass_val_off = AS3722_LDO6_VSEL_BYPASS;
724 desc->linear_ranges = as3722_ldo_ranges;
725 desc->n_linear_ranges = ARRAY_SIZE(as3722_ldo_ranges);
726 desc->curr_table = as3722_ldo_current;
727 desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current);
728 desc->csel_reg = as3722_reg_lookup[id].vsel_reg;
729 desc->csel_mask = AS3722_LDO_ILIMIT_MASK;
730 break;
731 case AS3722_REGULATOR_ID_SD0:
732 case AS3722_REGULATOR_ID_SD1:
733 case AS3722_REGULATOR_ID_SD6:
734 if (reg_config->ext_control)
735 ops = &as3722_sd016_extcntrl_ops;
736 else
737 ops = &as3722_sd016_ops;
738 if (id == AS3722_REGULATOR_ID_SD0 &&
739 as3722_sd0_is_low_voltage(as3722_regs)) {
740 as3722_regs->desc[id].n_voltages =
741 AS3722_SD0_VSEL_LOW_VOL_MAX + 1;
742 as3722_regs->desc[id].min_uV = 410000;
743 } else {
744 as3722_regs->desc[id].n_voltages =
745 AS3722_SD0_VSEL_MAX + 1;
746 as3722_regs->desc[id].min_uV = 610000;
747 }
748 desc->uV_step = 10000;
749 desc->linear_min_sel = 1;
750 desc->enable_time = 600;
751 desc->curr_table = as3722_sd016_current;
752 desc->n_current_limits =
753 ARRAY_SIZE(as3722_sd016_current);
754 if (id == AS3722_REGULATOR_ID_SD0) {
755 desc->csel_reg = AS3722_OVCURRENT_REG;
756 desc->csel_mask =
757 AS3722_OVCURRENT_SD0_TRIP_MASK;
758 } else if (id == AS3722_REGULATOR_ID_SD1) {
759 desc->csel_reg = AS3722_OVCURRENT_REG;
760 desc->csel_mask =
761 AS3722_OVCURRENT_SD1_TRIP_MASK;
762 } else if (id == AS3722_REGULATOR_ID_SD6) {
763 desc->csel_reg = AS3722_OVCURRENT_DEB_REG;
764 desc->csel_mask =
765 AS3722_OVCURRENT_SD6_TRIP_MASK;
766 }
767 break;
768 case AS3722_REGULATOR_ID_SD2:
769 case AS3722_REGULATOR_ID_SD3:
770 case AS3722_REGULATOR_ID_SD4:
771 case AS3722_REGULATOR_ID_SD5:
772 if (reg_config->ext_control)
773 ops = &as3722_sd2345_extcntrl_ops;
774 else
775 ops = &as3722_sd2345_ops;
776 desc->linear_ranges = as3722_sd2345_ranges;
777 desc->n_linear_ranges =
778 ARRAY_SIZE(as3722_sd2345_ranges);
779 break;
780 default:
781 if (reg_config->ext_control)
782 ops = &as3722_ldo_extcntrl_ops;
783 else
784 ops = &as3722_ldo_ops;
785 desc->enable_time = 500;
786 desc->linear_ranges = as3722_ldo_ranges;
787 desc->n_linear_ranges = ARRAY_SIZE(as3722_ldo_ranges);
788 desc->curr_table = as3722_ldo_current;
789 desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current);
790 desc->csel_reg = as3722_reg_lookup[id].vsel_reg;
791 desc->csel_mask = AS3722_LDO_ILIMIT_MASK;
792 break;
793 }
794 desc->ops = ops;
795 config.init_data = reg_config->reg_init;
796 config.of_node = as3722_regulator_matches[id].of_node;
797 rdev = devm_regulator_register(&pdev->dev, desc, &config);
798 if (IS_ERR(rdev)) {
799 ret = PTR_ERR(rdev);
800 dev_err(&pdev->dev, "regulator %d register failed %d\n",
801 id, ret);
802 return ret;
803 }
804
805 if (reg_config->ext_control) {
806 ret = regulator_enable_regmap(rdev);
807 if (ret < 0) {
808 dev_err(&pdev->dev,
809 "Regulator %d enable failed: %d\n",
810 id, ret);
811 return ret;
812 }
813 ret = as3722_extreg_init(as3722_regs, id,
814 reg_config->ext_control);
815 if (ret < 0) {
816 dev_err(&pdev->dev,
817 "AS3722 ext control failed: %d", ret);
818 return ret;
819 }
820 }
821 }
822 return 0;
823 }
824
825 static const struct of_device_id of_as3722_regulator_match[] = {
826 { .compatible = "ams,as3722-regulator", },
827 {},
828 };
829 MODULE_DEVICE_TABLE(of, of_as3722_regulator_match);
830
831 static struct platform_driver as3722_regulator_driver = {
832 .driver = {
833 .name = "as3722-regulator",
834 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
835 .of_match_table = of_as3722_regulator_match,
836 },
837 .probe = as3722_regulator_probe,
838 };
839
840 module_platform_driver(as3722_regulator_driver);
841
842 MODULE_ALIAS("platform:as3722-regulator");
843 MODULE_DESCRIPTION("AS3722 regulator driver");
844 MODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>");
845 MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
846 MODULE_LICENSE("GPL");
847