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drivers/rtc/rtc-m48t59.c: use dev_get_platdata()
[linux-2.6.git] / drivers / regulator / as3722-regulator.c
blob5917fe3dc983dc5335d62e393fe079459817d439
1 /*
2 * Voltage regulator support for AMS AS3722 PMIC
3 *
4 * Copyright (C) 2013 ams
5 *
6 * Author: Florian Lobmaier <florian.lobmaier@ams.com>
7 * Author: Laxman Dewangan <ldewangan@nvidia.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24
25 #include <linux/err.h>
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/mfd/as3722.h>
29 #include <linux/of.h>
30 #include <linux/of_platform.h>
31 #include <linux/platform_device.h>
32 #include <linux/regulator/driver.h>
33 #include <linux/regulator/machine.h>
34 #include <linux/regulator/of_regulator.h>
35 #include <linux/slab.h>
36
37 /* Regulator IDs */
38 enum as3722_regulators_id {
39 AS3722_REGULATOR_ID_SD0,
40 AS3722_REGULATOR_ID_SD1,
41 AS3722_REGULATOR_ID_SD2,
42 AS3722_REGULATOR_ID_SD3,
43 AS3722_REGULATOR_ID_SD4,
44 AS3722_REGULATOR_ID_SD5,
45 AS3722_REGULATOR_ID_SD6,
46 AS3722_REGULATOR_ID_LDO0,
47 AS3722_REGULATOR_ID_LDO1,
48 AS3722_REGULATOR_ID_LDO2,
49 AS3722_REGULATOR_ID_LDO3,
50 AS3722_REGULATOR_ID_LDO4,
51 AS3722_REGULATOR_ID_LDO5,
52 AS3722_REGULATOR_ID_LDO6,
53 AS3722_REGULATOR_ID_LDO7,
54 AS3722_REGULATOR_ID_LDO9,
55 AS3722_REGULATOR_ID_LDO10,
56 AS3722_REGULATOR_ID_LDO11,
57 AS3722_REGULATOR_ID_MAX,
58 };
59
60 struct as3722_register_mapping {
61 u8 regulator_id;
62 const char *name;
63 const char *sname;
64 u8 vsel_reg;
65 u8 vsel_mask;
66 int n_voltages;
67 u32 enable_reg;
68 u8 enable_mask;
69 u32 control_reg;
70 u8 mode_mask;
71 u32 sleep_ctrl_reg;
72 u8 sleep_ctrl_mask;
73 };
74
75 struct as3722_regulator_config_data {
76 struct regulator_init_data *reg_init;
77 bool enable_tracking;
78 int ext_control;
79 };
80
81 struct as3722_regulators {
82 struct device *dev;
83 struct as3722 *as3722;
84 struct regulator_dev *rdevs[AS3722_REGULATOR_ID_MAX];
85 struct regulator_desc desc[AS3722_REGULATOR_ID_MAX];
86 struct as3722_regulator_config_data
87 reg_config_data[AS3722_REGULATOR_ID_MAX];
88 };
89
90 static const struct as3722_register_mapping as3722_reg_lookup[] = {
91 {
92 .regulator_id = AS3722_REGULATOR_ID_SD0,
93 .name = "as3722-sd0",
94 .vsel_reg = AS3722_SD0_VOLTAGE_REG,
95 .vsel_mask = AS3722_SD_VSEL_MASK,
96 .enable_reg = AS3722_SD_CONTROL_REG,
97 .enable_mask = AS3722_SDn_CTRL(0),
98 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
99 .sleep_ctrl_mask = AS3722_SD0_EXT_ENABLE_MASK,
100 .control_reg = AS3722_SD0_CONTROL_REG,
101 .mode_mask = AS3722_SD0_MODE_FAST,
102 .n_voltages = AS3722_SD0_VSEL_MAX + 1,
103 },
104 {
105 .regulator_id = AS3722_REGULATOR_ID_SD1,
106 .name = "as3722-sd1",
107 .vsel_reg = AS3722_SD1_VOLTAGE_REG,
108 .vsel_mask = AS3722_SD_VSEL_MASK,
109 .enable_reg = AS3722_SD_CONTROL_REG,
110 .enable_mask = AS3722_SDn_CTRL(1),
111 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
112 .sleep_ctrl_mask = AS3722_SD1_EXT_ENABLE_MASK,
113 .control_reg = AS3722_SD1_CONTROL_REG,
114 .mode_mask = AS3722_SD1_MODE_FAST,
115 .n_voltages = AS3722_SD0_VSEL_MAX + 1,
116 },
117 {
118 .regulator_id = AS3722_REGULATOR_ID_SD2,
119 .name = "as3722-sd2",
120 .sname = "vsup-sd2",
121 .vsel_reg = AS3722_SD2_VOLTAGE_REG,
122 .vsel_mask = AS3722_SD_VSEL_MASK,
123 .enable_reg = AS3722_SD_CONTROL_REG,
124 .enable_mask = AS3722_SDn_CTRL(2),
125 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
126 .sleep_ctrl_mask = AS3722_SD2_EXT_ENABLE_MASK,
127 .control_reg = AS3722_SD23_CONTROL_REG,
128 .mode_mask = AS3722_SD2_MODE_FAST,
129 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
130 },
131 {
132 .regulator_id = AS3722_REGULATOR_ID_SD3,
133 .name = "as3722-sd3",
134 .sname = "vsup-sd3",
135 .vsel_reg = AS3722_SD3_VOLTAGE_REG,
136 .vsel_mask = AS3722_SD_VSEL_MASK,
137 .enable_reg = AS3722_SD_CONTROL_REG,
138 .enable_mask = AS3722_SDn_CTRL(3),
139 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
140 .sleep_ctrl_mask = AS3722_SD3_EXT_ENABLE_MASK,
141 .control_reg = AS3722_SD23_CONTROL_REG,
142 .mode_mask = AS3722_SD3_MODE_FAST,
143 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
144 },
145 {
146 .regulator_id = AS3722_REGULATOR_ID_SD4,
147 .name = "as3722-sd4",
148 .sname = "vsup-sd4",
149 .vsel_reg = AS3722_SD4_VOLTAGE_REG,
150 .vsel_mask = AS3722_SD_VSEL_MASK,
151 .enable_reg = AS3722_SD_CONTROL_REG,
152 .enable_mask = AS3722_SDn_CTRL(4),
153 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
154 .sleep_ctrl_mask = AS3722_SD4_EXT_ENABLE_MASK,
155 .control_reg = AS3722_SD4_CONTROL_REG,
156 .mode_mask = AS3722_SD4_MODE_FAST,
157 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
158 },
159 {
160 .regulator_id = AS3722_REGULATOR_ID_SD5,
161 .name = "as3722-sd5",
162 .sname = "vsup-sd5",
163 .vsel_reg = AS3722_SD5_VOLTAGE_REG,
164 .vsel_mask = AS3722_SD_VSEL_MASK,
165 .enable_reg = AS3722_SD_CONTROL_REG,
166 .enable_mask = AS3722_SDn_CTRL(5),
167 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
168 .sleep_ctrl_mask = AS3722_SD5_EXT_ENABLE_MASK,
169 .control_reg = AS3722_SD5_CONTROL_REG,
170 .mode_mask = AS3722_SD5_MODE_FAST,
171 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
172 },
173 {
174 .regulator_id = AS3722_REGULATOR_ID_SD6,
175 .name = "as3722-sd6",
176 .vsel_reg = AS3722_SD6_VOLTAGE_REG,
177 .vsel_mask = AS3722_SD_VSEL_MASK,
178 .enable_reg = AS3722_SD_CONTROL_REG,
179 .enable_mask = AS3722_SDn_CTRL(6),
180 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
181 .sleep_ctrl_mask = AS3722_SD6_EXT_ENABLE_MASK,
182 .control_reg = AS3722_SD6_CONTROL_REG,
183 .mode_mask = AS3722_SD6_MODE_FAST,
184 .n_voltages = AS3722_SD0_VSEL_MAX + 1,
185 },
186 {
187 .regulator_id = AS3722_REGULATOR_ID_LDO0,
188 .name = "as3722-ldo0",
189 .sname = "vin-ldo0",
190 .vsel_reg = AS3722_LDO0_VOLTAGE_REG,
191 .vsel_mask = AS3722_LDO0_VSEL_MASK,
192 .enable_reg = AS3722_LDOCONTROL0_REG,
193 .enable_mask = AS3722_LDO0_CTRL,
194 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
195 .sleep_ctrl_mask = AS3722_LDO0_EXT_ENABLE_MASK,
196 .n_voltages = AS3722_LDO0_NUM_VOLT,
197 },
198 {
199 .regulator_id = AS3722_REGULATOR_ID_LDO1,
200 .name = "as3722-ldo1",
201 .sname = "vin-ldo1-6",
202 .vsel_reg = AS3722_LDO1_VOLTAGE_REG,
203 .vsel_mask = AS3722_LDO_VSEL_MASK,
204 .enable_reg = AS3722_LDOCONTROL0_REG,
205 .enable_mask = AS3722_LDO1_CTRL,
206 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
207 .sleep_ctrl_mask = AS3722_LDO1_EXT_ENABLE_MASK,
208 .n_voltages = AS3722_LDO_NUM_VOLT,
209 },
210 {
211 .regulator_id = AS3722_REGULATOR_ID_LDO2,
212 .name = "as3722-ldo2",
213 .sname = "vin-ldo2-5-7",
214 .vsel_reg = AS3722_LDO2_VOLTAGE_REG,
215 .vsel_mask = AS3722_LDO_VSEL_MASK,
216 .enable_reg = AS3722_LDOCONTROL0_REG,
217 .enable_mask = AS3722_LDO2_CTRL,
218 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
219 .sleep_ctrl_mask = AS3722_LDO2_EXT_ENABLE_MASK,
220 .n_voltages = AS3722_LDO_NUM_VOLT,
221 },
222 {
223 .regulator_id = AS3722_REGULATOR_ID_LDO3,
224 .name = "as3722-ldo3",
225 .name = "vin-ldo3-4",
226 .vsel_reg = AS3722_LDO3_VOLTAGE_REG,
227 .vsel_mask = AS3722_LDO3_VSEL_MASK,
228 .enable_reg = AS3722_LDOCONTROL0_REG,
229 .enable_mask = AS3722_LDO3_CTRL,
230 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
231 .sleep_ctrl_mask = AS3722_LDO3_EXT_ENABLE_MASK,
232 .n_voltages = AS3722_LDO3_NUM_VOLT,
233 },
234 {
235 .regulator_id = AS3722_REGULATOR_ID_LDO4,
236 .name = "as3722-ldo4",
237 .name = "vin-ldo3-4",
238 .vsel_reg = AS3722_LDO4_VOLTAGE_REG,
239 .vsel_mask = AS3722_LDO_VSEL_MASK,
240 .enable_reg = AS3722_LDOCONTROL0_REG,
241 .enable_mask = AS3722_LDO4_CTRL,
242 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
243 .sleep_ctrl_mask = AS3722_LDO4_EXT_ENABLE_MASK,
244 .n_voltages = AS3722_LDO_NUM_VOLT,
245 },
246 {
247 .regulator_id = AS3722_REGULATOR_ID_LDO5,
248 .name = "as3722-ldo5",
249 .sname = "vin-ldo2-5-7",
250 .vsel_reg = AS3722_LDO5_VOLTAGE_REG,
251 .vsel_mask = AS3722_LDO_VSEL_MASK,
252 .enable_reg = AS3722_LDOCONTROL0_REG,
253 .enable_mask = AS3722_LDO5_CTRL,
254 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
255 .sleep_ctrl_mask = AS3722_LDO5_EXT_ENABLE_MASK,
256 .n_voltages = AS3722_LDO_NUM_VOLT,
257 },
258 {
259 .regulator_id = AS3722_REGULATOR_ID_LDO6,
260 .name = "as3722-ldo6",
261 .sname = "vin-ldo1-6",
262 .vsel_reg = AS3722_LDO6_VOLTAGE_REG,
263 .vsel_mask = AS3722_LDO_VSEL_MASK,
264 .enable_reg = AS3722_LDOCONTROL0_REG,
265 .enable_mask = AS3722_LDO6_CTRL,
266 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
267 .sleep_ctrl_mask = AS3722_LDO6_EXT_ENABLE_MASK,
268 .n_voltages = AS3722_LDO_NUM_VOLT,
269 },
270 {
271 .regulator_id = AS3722_REGULATOR_ID_LDO7,
272 .name = "as3722-ldo7",
273 .sname = "vin-ldo2-5-7",
274 .vsel_reg = AS3722_LDO7_VOLTAGE_REG,
275 .vsel_mask = AS3722_LDO_VSEL_MASK,
276 .enable_reg = AS3722_LDOCONTROL0_REG,
277 .enable_mask = AS3722_LDO7_CTRL,
278 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
279 .sleep_ctrl_mask = AS3722_LDO7_EXT_ENABLE_MASK,
280 .n_voltages = AS3722_LDO_NUM_VOLT,
281 },
282 {
283 .regulator_id = AS3722_REGULATOR_ID_LDO9,
284 .name = "as3722-ldo9",
285 .sname = "vin-ldo9-10",
286 .vsel_reg = AS3722_LDO9_VOLTAGE_REG,
287 .vsel_mask = AS3722_LDO_VSEL_MASK,
288 .enable_reg = AS3722_LDOCONTROL1_REG,
289 .enable_mask = AS3722_LDO9_CTRL,
290 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
291 .sleep_ctrl_mask = AS3722_LDO9_EXT_ENABLE_MASK,
292 .n_voltages = AS3722_LDO_NUM_VOLT,
293 },
294 {
295 .regulator_id = AS3722_REGULATOR_ID_LDO10,
296 .name = "as3722-ldo10",
297 .sname = "vin-ldo9-10",
298 .vsel_reg = AS3722_LDO10_VOLTAGE_REG,
299 .vsel_mask = AS3722_LDO_VSEL_MASK,
300 .enable_reg = AS3722_LDOCONTROL1_REG,
301 .enable_mask = AS3722_LDO10_CTRL,
302 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
303 .sleep_ctrl_mask = AS3722_LDO10_EXT_ENABLE_MASK,
304 .n_voltages = AS3722_LDO_NUM_VOLT,
305 },
306 {
307 .regulator_id = AS3722_REGULATOR_ID_LDO11,
308 .name = "as3722-ldo11",
309 .sname = "vin-ldo11",
310 .vsel_reg = AS3722_LDO11_VOLTAGE_REG,
311 .vsel_mask = AS3722_LDO_VSEL_MASK,
312 .enable_reg = AS3722_LDOCONTROL1_REG,
313 .enable_mask = AS3722_LDO11_CTRL,
314 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
315 .sleep_ctrl_mask = AS3722_LDO11_EXT_ENABLE_MASK,
316 .n_voltages = AS3722_LDO_NUM_VOLT,
317 },
318 };
319
320
321 static const int as3722_ldo_current[] = { 150000, 300000 };
322 static const int as3722_sd016_current[] = { 2500000, 3000000, 3500000 };
323
324 static int as3722_current_to_index(int min_uA, int max_uA,
325 const int *curr_table, int n_currents)
326 {
327 int i;
328
329 for (i = n_currents - 1; i >= 0; i--) {
330 if ((min_uA <= curr_table[i]) && (curr_table[i] <= max_uA))
331 return i;
332 }
333 return -EINVAL;
334 }
335
336 static int as3722_ldo_get_current_limit(struct regulator_dev *rdev)
337 {
338 struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
339 struct as3722 *as3722 = as3722_regs->as3722;
340 int id = rdev_get_id(rdev);
341 u32 val;
342 int ret;
343
344 ret = as3722_read(as3722, as3722_reg_lookup[id].vsel_reg, &val);
345 if (ret < 0) {
346 dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
347 as3722_reg_lookup[id].vsel_reg, ret);
348 return ret;
349 }
350 if (val & AS3722_LDO_ILIMIT_MASK)
351 return 300000;
352 return 150000;
353 }
354
355 static int as3722_ldo_set_current_limit(struct regulator_dev *rdev,
356 int min_uA, int max_uA)
357 {
358 struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
359 struct as3722 *as3722 = as3722_regs->as3722;
360 int id = rdev_get_id(rdev);
361 int ret;
362 u32 reg = 0;
363
364 ret = as3722_current_to_index(min_uA, max_uA, as3722_ldo_current,
365 ARRAY_SIZE(as3722_ldo_current));
366 if (ret < 0) {
367 dev_err(as3722_regs->dev,
368 "Current range min:max = %d:%d does not support\n",
369 min_uA, max_uA);
370 return ret;
371 }
372 if (ret)
373 reg = AS3722_LDO_ILIMIT_BIT;
374 return as3722_update_bits(as3722, as3722_reg_lookup[id].vsel_reg,
375 AS3722_LDO_ILIMIT_MASK, reg);
376 }
377
378 static struct regulator_ops as3722_ldo0_ops = {
379 .is_enabled = regulator_is_enabled_regmap,
380 .enable = regulator_enable_regmap,
381 .disable = regulator_disable_regmap,
382 .list_voltage = regulator_list_voltage_linear,
383 .get_voltage_sel = regulator_get_voltage_sel_regmap,
384 .set_voltage_sel = regulator_set_voltage_sel_regmap,
385 .get_current_limit = as3722_ldo_get_current_limit,
386 .set_current_limit = as3722_ldo_set_current_limit,
387 };
388
389 static struct regulator_ops as3722_ldo0_extcntrl_ops = {
390 .list_voltage = regulator_list_voltage_linear,
391 .get_voltage_sel = regulator_get_voltage_sel_regmap,
392 .set_voltage_sel = regulator_set_voltage_sel_regmap,
393 .get_current_limit = as3722_ldo_get_current_limit,
394 .set_current_limit = as3722_ldo_set_current_limit,
395 };
396
397 static int as3722_ldo3_set_tracking_mode(struct as3722_regulators *as3722_reg,
398 int id, u8 mode)
399 {
400 struct as3722 *as3722 = as3722_reg->as3722;
401
402 switch (mode) {
403 case AS3722_LDO3_MODE_PMOS:
404 case AS3722_LDO3_MODE_PMOS_TRACKING:
405 case AS3722_LDO3_MODE_NMOS:
406 case AS3722_LDO3_MODE_SWITCH:
407 return as3722_update_bits(as3722,
408 as3722_reg_lookup[id].vsel_reg,
409 AS3722_LDO3_MODE_MASK, mode);
410
411 default:
412 return -EINVAL;
413 }
414 }
415
416 static int as3722_ldo3_get_current_limit(struct regulator_dev *rdev)
417 {
418 return 150000;
419 }
420
421 static struct regulator_ops as3722_ldo3_ops = {
422 .is_enabled = regulator_is_enabled_regmap,
423 .enable = regulator_enable_regmap,
424 .disable = regulator_disable_regmap,
425 .list_voltage = regulator_list_voltage_linear,
426 .get_voltage_sel = regulator_get_voltage_sel_regmap,
427 .set_voltage_sel = regulator_set_voltage_sel_regmap,
428 .get_current_limit = as3722_ldo3_get_current_limit,
429 };
430
431 static struct regulator_ops as3722_ldo3_extcntrl_ops = {
432 .list_voltage = regulator_list_voltage_linear,
433 .get_voltage_sel = regulator_get_voltage_sel_regmap,
434 .set_voltage_sel = regulator_set_voltage_sel_regmap,
435 .get_current_limit = as3722_ldo3_get_current_limit,
436 };
437
438 static const struct regulator_linear_range as3722_ldo_ranges[] = {
439 REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000),
440 REGULATOR_LINEAR_RANGE(1725000, 0x40, 0x7F, 25000),
441 };
442
443 static struct regulator_ops as3722_ldo_ops = {
444 .is_enabled = regulator_is_enabled_regmap,
445 .enable = regulator_enable_regmap,
446 .disable = regulator_disable_regmap,
447 .map_voltage = regulator_map_voltage_linear_range,
448 .set_voltage_sel = regulator_set_voltage_sel_regmap,
449 .get_voltage_sel = regulator_get_voltage_sel_regmap,
450 .list_voltage = regulator_list_voltage_linear_range,
451 .get_current_limit = as3722_ldo_get_current_limit,
452 .set_current_limit = as3722_ldo_set_current_limit,
453 };
454
455 static struct regulator_ops as3722_ldo_extcntrl_ops = {
456 .map_voltage = regulator_map_voltage_linear_range,
457 .set_voltage_sel = regulator_set_voltage_sel_regmap,
458 .get_voltage_sel = regulator_get_voltage_sel_regmap,
459 .list_voltage = regulator_list_voltage_linear_range,
460 .get_current_limit = as3722_ldo_get_current_limit,
461 .set_current_limit = as3722_ldo_set_current_limit,
462 };
463
464 static unsigned int as3722_sd_get_mode(struct regulator_dev *rdev)
465 {
466 struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
467 struct as3722 *as3722 = as3722_regs->as3722;
468 int id = rdev_get_id(rdev);
469 u32 val;
470 int ret;
471
472 if (!as3722_reg_lookup[id].control_reg)
473 return -ENOTSUPP;
474
475 ret = as3722_read(as3722, as3722_reg_lookup[id].control_reg, &val);
476 if (ret < 0) {
477 dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
478 as3722_reg_lookup[id].control_reg, ret);
479 return ret;
480 }
481
482 if (val & as3722_reg_lookup[id].mode_mask)
483 return REGULATOR_MODE_FAST;
484 else
485 return REGULATOR_MODE_NORMAL;
486 }
487
488 static int as3722_sd_set_mode(struct regulator_dev *rdev,
489 unsigned int mode)
490 {
491 struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
492 struct as3722 *as3722 = as3722_regs->as3722;
493 u8 id = rdev_get_id(rdev);
494 u8 val = 0;
495 int ret;
496
497 if (!as3722_reg_lookup[id].control_reg)
498 return -ERANGE;
499
500 switch (mode) {
501 case REGULATOR_MODE_FAST:
502 val = as3722_reg_lookup[id].mode_mask;
503 case REGULATOR_MODE_NORMAL: /* fall down */
504 break;
505 default:
506 return -EINVAL;
507 }
508
509 ret = as3722_update_bits(as3722, as3722_reg_lookup[id].control_reg,
510 as3722_reg_lookup[id].mode_mask, val);
511 if (ret < 0) {
512 dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
513 as3722_reg_lookup[id].control_reg, ret);
514 return ret;
515 }
516 return ret;
517 }
518
519 static int as3722_sd016_get_current_limit(struct regulator_dev *rdev)
520 {
521 struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
522 struct as3722 *as3722 = as3722_regs->as3722;
523 int id = rdev_get_id(rdev);
524 u32 val, reg;
525 int mask;
526 int ret;
527
528 switch (id) {
529 case AS3722_REGULATOR_ID_SD0:
530 reg = AS3722_OVCURRENT_REG;
531 mask = AS3722_OVCURRENT_SD0_TRIP_MASK;
532 break;
533 case AS3722_REGULATOR_ID_SD1:
534 reg = AS3722_OVCURRENT_REG;
535 mask = AS3722_OVCURRENT_SD1_TRIP_MASK;
536 break;
537 case AS3722_REGULATOR_ID_SD6:
538 reg = AS3722_OVCURRENT_DEB_REG;
539 mask = AS3722_OVCURRENT_SD6_TRIP_MASK;
540 break;
541 default:
542 return -EINVAL;
543 }
544 ret = as3722_read(as3722, reg, &val);
545 if (ret < 0) {
546 dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
547 reg, ret);
548 return ret;
549 }
550 val &= mask;
551 val >>= ffs(mask) - 1;
552 if (val == 3)
553 return -EINVAL;
554 return as3722_sd016_current[val];
555 }
556
557 static int as3722_sd016_set_current_limit(struct regulator_dev *rdev,
558 int min_uA, int max_uA)
559 {
560 struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
561 struct as3722 *as3722 = as3722_regs->as3722;
562 int id = rdev_get_id(rdev);
563 int ret;
564 int val;
565 int mask;
566 u32 reg;
567
568 ret = as3722_current_to_index(min_uA, max_uA, as3722_sd016_current,
569 ARRAY_SIZE(as3722_sd016_current));
570 if (ret < 0) {
571 dev_err(as3722_regs->dev,
572 "Current range min:max = %d:%d does not support\n",
573 min_uA, max_uA);
574 return ret;
575 }
576
577 switch (id) {
578 case AS3722_REGULATOR_ID_SD0:
579 reg = AS3722_OVCURRENT_REG;
580 mask = AS3722_OVCURRENT_SD0_TRIP_MASK;
581 break;
582 case AS3722_REGULATOR_ID_SD1:
583 reg = AS3722_OVCURRENT_REG;
584 mask = AS3722_OVCURRENT_SD1_TRIP_MASK;
585 break;
586 case AS3722_REGULATOR_ID_SD6:
587 reg = AS3722_OVCURRENT_DEB_REG;
588 mask = AS3722_OVCURRENT_SD6_TRIP_MASK;
589 break;
590 default:
591 return -EINVAL;
592 }
593 val = ret & mask;
594 val <<= ffs(mask) - 1;
595 return as3722_update_bits(as3722, reg, mask, val);
596 }
597
598 static const struct regulator_linear_range as3722_sd2345_ranges[] = {
599 REGULATOR_LINEAR_RANGE(612500, 0x01, 0x40, 12500),
600 REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000),
601 REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7F, 50000),
602 };
603
604 static struct regulator_ops as3722_sd016_ops = {
605 .is_enabled = regulator_is_enabled_regmap,
606 .enable = regulator_enable_regmap,
607 .disable = regulator_disable_regmap,
608 .list_voltage = regulator_list_voltage_linear,
609 .map_voltage = regulator_map_voltage_linear,
610 .get_voltage_sel = regulator_get_voltage_sel_regmap,
611 .set_voltage_sel = regulator_set_voltage_sel_regmap,
612 .get_current_limit = as3722_sd016_get_current_limit,
613 .set_current_limit = as3722_sd016_set_current_limit,
614 .get_mode = as3722_sd_get_mode,
615 .set_mode = as3722_sd_set_mode,
616 };
617
618 static struct regulator_ops as3722_sd016_extcntrl_ops = {
619 .list_voltage = regulator_list_voltage_linear,
620 .map_voltage = regulator_map_voltage_linear,
621 .get_voltage_sel = regulator_get_voltage_sel_regmap,
622 .set_voltage_sel = regulator_set_voltage_sel_regmap,
623 .get_current_limit = as3722_sd016_get_current_limit,
624 .set_current_limit = as3722_sd016_set_current_limit,
625 .get_mode = as3722_sd_get_mode,
626 .set_mode = as3722_sd_set_mode,
627 };
628
629 static struct regulator_ops as3722_sd2345_ops = {
630 .is_enabled = regulator_is_enabled_regmap,
631 .enable = regulator_enable_regmap,
632 .disable = regulator_disable_regmap,
633 .list_voltage = regulator_list_voltage_linear_range,
634 .map_voltage = regulator_map_voltage_linear_range,
635 .set_voltage_sel = regulator_set_voltage_sel_regmap,
636 .get_voltage_sel = regulator_get_voltage_sel_regmap,
637 .get_mode = as3722_sd_get_mode,
638 .set_mode = as3722_sd_set_mode,
639 };
640
641 static struct regulator_ops as3722_sd2345_extcntrl_ops = {
642 .list_voltage = regulator_list_voltage_linear_range,
643 .map_voltage = regulator_map_voltage_linear_range,
644 .set_voltage_sel = regulator_set_voltage_sel_regmap,
645 .get_voltage_sel = regulator_get_voltage_sel_regmap,
646 .get_mode = as3722_sd_get_mode,
647 .set_mode = as3722_sd_set_mode,
648 };
649
650 static int as3722_extreg_init(struct as3722_regulators *as3722_regs, int id,
651 int ext_pwr_ctrl)
652 {
653 int ret;
654 unsigned int val;
655
656 if ((ext_pwr_ctrl < AS3722_EXT_CONTROL_ENABLE1) ||
657 (ext_pwr_ctrl > AS3722_EXT_CONTROL_ENABLE3))
658 return -EINVAL;
659
660 val = ext_pwr_ctrl << (ffs(as3722_reg_lookup[id].sleep_ctrl_mask) - 1);
661 ret = as3722_update_bits(as3722_regs->as3722,
662 as3722_reg_lookup[id].sleep_ctrl_reg,
663 as3722_reg_lookup[id].sleep_ctrl_mask, val);
664 if (ret < 0)
665 dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
666 as3722_reg_lookup[id].sleep_ctrl_reg, ret);
667 return ret;
668 }
669
670 static struct of_regulator_match as3722_regulator_matches[] = {
671 { .name = "sd0", },
672 { .name = "sd1", },
673 { .name = "sd2", },
674 { .name = "sd3", },
675 { .name = "sd4", },
676 { .name = "sd5", },
677 { .name = "sd6", },
678 { .name = "ldo0", },
679 { .name = "ldo1", },
680 { .name = "ldo2", },
681 { .name = "ldo3", },
682 { .name = "ldo4", },
683 { .name = "ldo5", },
684 { .name = "ldo6", },
685 { .name = "ldo7", },
686 { .name = "ldo9", },
687 { .name = "ldo10", },
688 { .name = "ldo11", },
689 };
690
691 static int as3722_get_regulator_dt_data(struct platform_device *pdev,
692 struct as3722_regulators *as3722_regs)
693 {
694 struct device_node *np;
695 struct as3722_regulator_config_data *reg_config;
696 u32 prop;
697 int id;
698 int ret;
699
700 np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
701 if (!np) {
702 dev_err(&pdev->dev, "Device is not having regulators node\n");
703 return -ENODEV;
704 }
705 pdev->dev.of_node = np;
706
707 ret = of_regulator_match(&pdev->dev, np, as3722_regulator_matches,
708 ARRAY_SIZE(as3722_regulator_matches));
709 if (ret < 0) {
710 dev_err(&pdev->dev, "Parsing of regulator node failed: %d\n",
711 ret);
712 return ret;
713 }
714
715 for (id = 0; id < ARRAY_SIZE(as3722_regulator_matches); ++id) {
716 struct device_node *reg_node;
717
718 reg_config = &as3722_regs->reg_config_data[id];
719 reg_config->reg_init = as3722_regulator_matches[id].init_data;
720 reg_node = as3722_regulator_matches[id].of_node;
721
722 if (!reg_config->reg_init || !reg_node)
723 continue;
724
725 ret = of_property_read_u32(reg_node, "ams,ext-control", &prop);
726 if (!ret) {
727 if (prop < 3)
728 reg_config->ext_control = prop;
729 else
730 dev_warn(&pdev->dev,
731 "ext-control have invalid option: %u\n",
732 prop);
733 }
734 reg_config->enable_tracking =
735 of_property_read_bool(reg_node, "ams,enable-tracking");
736 }
737 return 0;
738 }
739
740 static int as3722_regulator_probe(struct platform_device *pdev)
741 {
742 struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent);
743 struct as3722_regulators *as3722_regs;
744 struct as3722_regulator_config_data *reg_config;
745 struct regulator_dev *rdev;
746 struct regulator_config config = { };
747 struct regulator_ops *ops;
748 int id;
749 int ret;
750
751 as3722_regs = devm_kzalloc(&pdev->dev, sizeof(*as3722_regs),
752 GFP_KERNEL);
753 if (!as3722_regs)
754 return -ENOMEM;
755
756 as3722_regs->dev = &pdev->dev;
757 as3722_regs->as3722 = as3722;
758 platform_set_drvdata(pdev, as3722_regs);
759
760 ret = as3722_get_regulator_dt_data(pdev, as3722_regs);
761 if (ret < 0)
762 return ret;
763
764 config.dev = &pdev->dev;
765 config.driver_data = as3722_regs;
766 config.regmap = as3722->regmap;
767
768 for (id = 0; id < AS3722_REGULATOR_ID_MAX; id++) {
769 reg_config = &as3722_regs->reg_config_data[id];
770
771 as3722_regs->desc[id].name = as3722_reg_lookup[id].name;
772 as3722_regs->desc[id].supply_name = as3722_reg_lookup[id].sname;
773 as3722_regs->desc[id].id = as3722_reg_lookup[id].regulator_id;
774 as3722_regs->desc[id].n_voltages =
775 as3722_reg_lookup[id].n_voltages;
776 as3722_regs->desc[id].type = REGULATOR_VOLTAGE;
777 as3722_regs->desc[id].owner = THIS_MODULE;
778 as3722_regs->desc[id].enable_reg =
779 as3722_reg_lookup[id].enable_reg;
780 as3722_regs->desc[id].enable_mask =
781 as3722_reg_lookup[id].enable_mask;
782 as3722_regs->desc[id].vsel_reg = as3722_reg_lookup[id].vsel_reg;
783 as3722_regs->desc[id].vsel_mask =
784 as3722_reg_lookup[id].vsel_mask;
785 switch (id) {
786 case AS3722_REGULATOR_ID_LDO0:
787 if (reg_config->ext_control)
788 ops = &as3722_ldo0_extcntrl_ops;
789 else
790 ops = &as3722_ldo0_ops;
791 as3722_regs->desc[id].min_uV = 825000;
792 as3722_regs->desc[id].uV_step = 25000;
793 as3722_regs->desc[id].linear_min_sel = 1;
794 as3722_regs->desc[id].enable_time = 500;
795 break;
796 case AS3722_REGULATOR_ID_LDO3:
797 if (reg_config->ext_control)
798 ops = &as3722_ldo3_extcntrl_ops;
799 else
800 ops = &as3722_ldo3_ops;
801 as3722_regs->desc[id].min_uV = 620000;
802 as3722_regs->desc[id].uV_step = 20000;
803 as3722_regs->desc[id].linear_min_sel = 1;
804 as3722_regs->desc[id].enable_time = 500;
805 if (reg_config->enable_tracking) {
806 ret = as3722_ldo3_set_tracking_mode(as3722_regs,
807 id, AS3722_LDO3_MODE_PMOS_TRACKING);
808 if (ret < 0) {
809 dev_err(&pdev->dev,
810 "LDO3 tracking failed: %d\n",
811 ret);
812 return ret;
813 }
814 }
815 break;
816 case AS3722_REGULATOR_ID_SD0:
817 case AS3722_REGULATOR_ID_SD1:
818 case AS3722_REGULATOR_ID_SD6:
819 if (reg_config->ext_control)
820 ops = &as3722_sd016_extcntrl_ops;
821 else
822 ops = &as3722_sd016_ops;
823 as3722_regs->desc[id].min_uV = 610000;
824 as3722_regs->desc[id].uV_step = 10000;
825 as3722_regs->desc[id].linear_min_sel = 1;
826 break;
827 case AS3722_REGULATOR_ID_SD2:
828 case AS3722_REGULATOR_ID_SD3:
829 case AS3722_REGULATOR_ID_SD4:
830 case AS3722_REGULATOR_ID_SD5:
831 if (reg_config->ext_control)
832 ops = &as3722_sd2345_extcntrl_ops;
833 else
834 ops = &as3722_sd2345_ops;
835 as3722_regs->desc[id].linear_ranges =
836 as3722_sd2345_ranges;
837 as3722_regs->desc[id].n_linear_ranges =
838 ARRAY_SIZE(as3722_sd2345_ranges);
839 break;
840 default:
841 if (reg_config->ext_control)
842 ops = &as3722_ldo_extcntrl_ops;
843 else
844 ops = &as3722_ldo_ops;
845 as3722_regs->desc[id].min_uV = 825000;
846 as3722_regs->desc[id].uV_step = 25000;
847 as3722_regs->desc[id].linear_min_sel = 1;
848 as3722_regs->desc[id].enable_time = 500;
849 as3722_regs->desc[id].linear_ranges = as3722_ldo_ranges;
850 as3722_regs->desc[id].n_linear_ranges =
851 ARRAY_SIZE(as3722_ldo_ranges);
852 break;
853 }
854 as3722_regs->desc[id].ops = ops;
855 config.init_data = reg_config->reg_init;
856 config.of_node = as3722_regulator_matches[id].of_node;
857 rdev = devm_regulator_register(&pdev->dev,
858 &as3722_regs->desc[id], &config);
859 if (IS_ERR(rdev)) {
860 ret = PTR_ERR(rdev);
861 dev_err(&pdev->dev, "regulator %d register failed %d\n",
862 id, ret);
863 return ret;
864 }
865
866 as3722_regs->rdevs[id] = rdev;
867 if (reg_config->ext_control) {
868 ret = regulator_enable_regmap(rdev);
869 if (ret < 0) {
870 dev_err(&pdev->dev,
871 "Regulator %d enable failed: %d\n",
872 id, ret);
873 return ret;
874 }
875 ret = as3722_extreg_init(as3722_regs, id,
876 reg_config->ext_control);
877 if (ret < 0) {
878 dev_err(&pdev->dev,
879 "AS3722 ext control failed: %d", ret);
880 return ret;
881 }
882 }
883 }
884 return 0;
885 }
886
887 static const struct of_device_id of_as3722_regulator_match[] = {
888 { .compatible = "ams,as3722-regulator", },
889 {},
890 };
891 MODULE_DEVICE_TABLE(of, of_as3722_regulator_match);
892
893 static struct platform_driver as3722_regulator_driver = {
894 .driver = {
895 .name = "as3722-regulator",
896 .owner = THIS_MODULE,
897 .of_match_table = of_as3722_regulator_match,
898 },
899 .probe = as3722_regulator_probe,
900 };
901
902 module_platform_driver(as3722_regulator_driver);
903
904 MODULE_ALIAS("platform:as3722-regulator");
905 MODULE_DESCRIPTION("AS3722 regulator driver");
906 MODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>");
907 MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
908 MODULE_LICENSE("GPL");
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