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1 | /* |
2 | * tps6507x-regulator.c | |
3 | * | |
4 | * Regulator driver for TPS65073 PMIC | |
5 | * | |
6 | * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/ | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation version 2. | |
11 | * | |
12 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, | |
13 | * whether express or implied; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | */ | |
17 | ||
18 | #include <linux/kernel.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/err.h> | |
22 | #include <linux/platform_device.h> | |
23 | #include <linux/regulator/driver.h> | |
24 | #include <linux/regulator/machine.h> | |
25 | #include <linux/i2c.h> | |
26 | #include <linux/delay.h> | |
5a0e3ad6 | 27 | #include <linux/slab.h> |
3fa5b8e0 AA |
28 | |
29 | /* Register definitions */ | |
30 | #define TPS6507X_REG_PPATH1 0X01 | |
31 | #define TPS6507X_REG_INT 0X02 | |
32 | #define TPS6507X_REG_CHGCONFIG0 0X03 | |
33 | #define TPS6507X_REG_CHGCONFIG1 0X04 | |
34 | #define TPS6507X_REG_CHGCONFIG2 0X05 | |
35 | #define TPS6507X_REG_CHGCONFIG3 0X06 | |
36 | #define TPS6507X_REG_REG_ADCONFIG 0X07 | |
37 | #define TPS6507X_REG_TSCMODE 0X08 | |
38 | #define TPS6507X_REG_ADRESULT_1 0X09 | |
39 | #define TPS6507X_REG_ADRESULT_2 0X0A | |
40 | #define TPS6507X_REG_PGOOD 0X0B | |
41 | #define TPS6507X_REG_PGOODMASK 0X0C | |
42 | #define TPS6507X_REG_CON_CTRL1 0X0D | |
43 | #define TPS6507X_REG_CON_CTRL2 0X0E | |
44 | #define TPS6507X_REG_CON_CTRL3 0X0F | |
45 | #define TPS6507X_REG_DEFDCDC1 0X10 | |
46 | #define TPS6507X_REG_DEFDCDC2_LOW 0X11 | |
47 | #define TPS6507X_REG_DEFDCDC2_HIGH 0X12 | |
48 | #define TPS6507X_REG_DEFDCDC3_LOW 0X13 | |
49 | #define TPS6507X_REG_DEFDCDC3_HIGH 0X14 | |
50 | #define TPS6507X_REG_DEFSLEW 0X15 | |
51 | #define TPS6507X_REG_LDO_CTRL1 0X16 | |
52 | #define TPS6507X_REG_DEFLDO2 0X17 | |
53 | #define TPS6507X_REG_WLED_CTRL1 0X18 | |
54 | #define TPS6507X_REG_WLED_CTRL2 0X19 | |
55 | ||
56 | /* CON_CTRL1 bitfields */ | |
57 | #define TPS6507X_CON_CTRL1_DCDC1_ENABLE BIT(4) | |
58 | #define TPS6507X_CON_CTRL1_DCDC2_ENABLE BIT(3) | |
59 | #define TPS6507X_CON_CTRL1_DCDC3_ENABLE BIT(2) | |
60 | #define TPS6507X_CON_CTRL1_LDO1_ENABLE BIT(1) | |
61 | #define TPS6507X_CON_CTRL1_LDO2_ENABLE BIT(0) | |
62 | ||
63 | /* DEFDCDC1 bitfields */ | |
64 | #define TPS6507X_DEFDCDC1_DCDC1_EXT_ADJ_EN BIT(7) | |
65 | #define TPS6507X_DEFDCDC1_DCDC1_MASK 0X3F | |
66 | ||
67 | /* DEFDCDC2_LOW bitfields */ | |
68 | #define TPS6507X_DEFDCDC2_LOW_DCDC2_MASK 0X3F | |
69 | ||
70 | /* DEFDCDC2_HIGH bitfields */ | |
71 | #define TPS6507X_DEFDCDC2_HIGH_DCDC2_MASK 0X3F | |
72 | ||
73 | /* DEFDCDC3_LOW bitfields */ | |
74 | #define TPS6507X_DEFDCDC3_LOW_DCDC3_MASK 0X3F | |
75 | ||
76 | /* DEFDCDC3_HIGH bitfields */ | |
77 | #define TPS6507X_DEFDCDC3_HIGH_DCDC3_MASK 0X3F | |
78 | ||
79 | /* TPS6507X_REG_LDO_CTRL1 bitfields */ | |
80 | #define TPS6507X_REG_LDO_CTRL1_LDO1_MASK 0X0F | |
81 | ||
82 | /* TPS6507X_REG_DEFLDO2 bitfields */ | |
83 | #define TPS6507X_REG_DEFLDO2_LDO2_MASK 0X3F | |
84 | ||
85 | /* VDCDC MASK */ | |
86 | #define TPS6507X_DEFDCDCX_DCDC_MASK 0X3F | |
87 | ||
88 | /* DCDC's */ | |
89 | #define TPS6507X_DCDC_1 0 | |
90 | #define TPS6507X_DCDC_2 1 | |
91 | #define TPS6507X_DCDC_3 2 | |
92 | /* LDOs */ | |
93 | #define TPS6507X_LDO_1 3 | |
94 | #define TPS6507X_LDO_2 4 | |
95 | ||
96 | #define TPS6507X_MAX_REG_ID TPS6507X_LDO_2 | |
97 | ||
98 | /* Number of step-down converters available */ | |
99 | #define TPS6507X_NUM_DCDC 3 | |
100 | /* Number of LDO voltage regulators available */ | |
101 | #define TPS6507X_NUM_LDO 2 | |
102 | /* Number of total regulators available */ | |
103 | #define TPS6507X_NUM_REGULATOR (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO) | |
104 | ||
105 | /* Supported voltage values for regulators (in milliVolts) */ | |
106 | static const u16 VDCDCx_VSEL_table[] = { | |
107 | 725, 750, 775, 800, | |
108 | 825, 850, 875, 900, | |
109 | 925, 950, 975, 1000, | |
110 | 1025, 1050, 1075, 1100, | |
111 | 1125, 1150, 1175, 1200, | |
112 | 1225, 1250, 1275, 1300, | |
113 | 1325, 1350, 1375, 1400, | |
114 | 1425, 1450, 1475, 1500, | |
115 | 1550, 1600, 1650, 1700, | |
116 | 1750, 1800, 1850, 1900, | |
117 | 1950, 2000, 2050, 2100, | |
118 | 2150, 2200, 2250, 2300, | |
119 | 2350, 2400, 2450, 2500, | |
120 | 2550, 2600, 2650, 2700, | |
121 | 2750, 2800, 2850, 2900, | |
122 | 3000, 3100, 3200, 3300, | |
123 | }; | |
124 | ||
125 | static const u16 LDO1_VSEL_table[] = { | |
126 | 1000, 1100, 1200, 1250, | |
127 | 1300, 1350, 1400, 1500, | |
128 | 1600, 1800, 2500, 2750, | |
129 | 2800, 3000, 3100, 3300, | |
130 | }; | |
131 | ||
132 | static const u16 LDO2_VSEL_table[] = { | |
133 | 725, 750, 775, 800, | |
134 | 825, 850, 875, 900, | |
135 | 925, 950, 975, 1000, | |
136 | 1025, 1050, 1075, 1100, | |
137 | 1125, 1150, 1175, 1200, | |
138 | 1225, 1250, 1275, 1300, | |
139 | 1325, 1350, 1375, 1400, | |
140 | 1425, 1450, 1475, 1500, | |
141 | 1550, 1600, 1650, 1700, | |
142 | 1750, 1800, 1850, 1900, | |
143 | 1950, 2000, 2050, 2100, | |
144 | 2150, 2200, 2250, 2300, | |
145 | 2350, 2400, 2450, 2500, | |
146 | 2550, 2600, 2650, 2700, | |
147 | 2750, 2800, 2850, 2900, | |
148 | 3000, 3100, 3200, 3300, | |
149 | }; | |
150 | ||
151 | static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDCx_VSEL_table), | |
152 | ARRAY_SIZE(VDCDCx_VSEL_table), | |
153 | ARRAY_SIZE(VDCDCx_VSEL_table), | |
154 | ARRAY_SIZE(LDO1_VSEL_table), | |
155 | ARRAY_SIZE(LDO2_VSEL_table)}; | |
156 | ||
157 | struct tps_info { | |
158 | const char *name; | |
159 | unsigned min_uV; | |
160 | unsigned max_uV; | |
161 | u8 table_len; | |
162 | const u16 *table; | |
163 | }; | |
164 | ||
165 | struct tps_pmic { | |
166 | struct regulator_desc desc[TPS6507X_NUM_REGULATOR]; | |
167 | struct i2c_client *client; | |
168 | struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR]; | |
169 | const struct tps_info *info[TPS6507X_NUM_REGULATOR]; | |
170 | struct mutex io_lock; | |
171 | }; | |
172 | ||
173 | static inline int tps_6507x_read(struct tps_pmic *tps, u8 reg) | |
174 | { | |
175 | return i2c_smbus_read_byte_data(tps->client, reg); | |
176 | } | |
177 | ||
178 | static inline int tps_6507x_write(struct tps_pmic *tps, u8 reg, u8 val) | |
179 | { | |
180 | return i2c_smbus_write_byte_data(tps->client, reg, val); | |
181 | } | |
182 | ||
183 | static int tps_6507x_set_bits(struct tps_pmic *tps, u8 reg, u8 mask) | |
184 | { | |
185 | int err, data; | |
186 | ||
187 | mutex_lock(&tps->io_lock); | |
188 | ||
189 | data = tps_6507x_read(tps, reg); | |
190 | if (data < 0) { | |
191 | dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); | |
192 | err = data; | |
193 | goto out; | |
194 | } | |
195 | ||
196 | data |= mask; | |
197 | err = tps_6507x_write(tps, reg, data); | |
198 | if (err) | |
199 | dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); | |
200 | ||
201 | out: | |
202 | mutex_unlock(&tps->io_lock); | |
203 | return err; | |
204 | } | |
205 | ||
206 | static int tps_6507x_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask) | |
207 | { | |
208 | int err, data; | |
209 | ||
210 | mutex_lock(&tps->io_lock); | |
211 | ||
212 | data = tps_6507x_read(tps, reg); | |
213 | if (data < 0) { | |
214 | dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); | |
215 | err = data; | |
216 | goto out; | |
217 | } | |
218 | ||
219 | data &= ~mask; | |
220 | err = tps_6507x_write(tps, reg, data); | |
221 | if (err) | |
222 | dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); | |
223 | ||
224 | out: | |
225 | mutex_unlock(&tps->io_lock); | |
226 | return err; | |
227 | } | |
228 | ||
229 | static int tps_6507x_reg_read(struct tps_pmic *tps, u8 reg) | |
230 | { | |
231 | int data; | |
232 | ||
233 | mutex_lock(&tps->io_lock); | |
234 | ||
235 | data = tps_6507x_read(tps, reg); | |
236 | if (data < 0) | |
237 | dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); | |
238 | ||
239 | mutex_unlock(&tps->io_lock); | |
240 | return data; | |
241 | } | |
242 | ||
243 | static int tps_6507x_reg_write(struct tps_pmic *tps, u8 reg, u8 val) | |
244 | { | |
245 | int err; | |
246 | ||
247 | mutex_lock(&tps->io_lock); | |
248 | ||
249 | err = tps_6507x_write(tps, reg, val); | |
250 | if (err < 0) | |
251 | dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); | |
252 | ||
253 | mutex_unlock(&tps->io_lock); | |
254 | return err; | |
255 | } | |
256 | ||
257 | static int tps6507x_dcdc_is_enabled(struct regulator_dev *dev) | |
258 | { | |
259 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
260 | int data, dcdc = rdev_get_id(dev); | |
261 | u8 shift; | |
262 | ||
263 | if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3) | |
264 | return -EINVAL; | |
265 | ||
266 | shift = TPS6507X_MAX_REG_ID - dcdc; | |
267 | data = tps_6507x_reg_read(tps, TPS6507X_REG_CON_CTRL1); | |
268 | ||
269 | if (data < 0) | |
270 | return data; | |
271 | else | |
272 | return (data & 1<<shift) ? 1 : 0; | |
273 | } | |
274 | ||
275 | static int tps6507x_ldo_is_enabled(struct regulator_dev *dev) | |
276 | { | |
277 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
278 | int data, ldo = rdev_get_id(dev); | |
279 | u8 shift; | |
280 | ||
281 | if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2) | |
282 | return -EINVAL; | |
283 | ||
284 | shift = TPS6507X_MAX_REG_ID - ldo; | |
285 | data = tps_6507x_reg_read(tps, TPS6507X_REG_CON_CTRL1); | |
286 | ||
287 | if (data < 0) | |
288 | return data; | |
289 | else | |
290 | return (data & 1<<shift) ? 1 : 0; | |
291 | } | |
292 | ||
293 | static int tps6507x_dcdc_enable(struct regulator_dev *dev) | |
294 | { | |
295 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
296 | int dcdc = rdev_get_id(dev); | |
297 | u8 shift; | |
298 | ||
299 | if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3) | |
300 | return -EINVAL; | |
301 | ||
302 | shift = TPS6507X_MAX_REG_ID - dcdc; | |
303 | return tps_6507x_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift); | |
304 | } | |
305 | ||
306 | static int tps6507x_dcdc_disable(struct regulator_dev *dev) | |
307 | { | |
308 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
309 | int dcdc = rdev_get_id(dev); | |
310 | u8 shift; | |
311 | ||
312 | if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3) | |
313 | return -EINVAL; | |
314 | ||
315 | shift = TPS6507X_MAX_REG_ID - dcdc; | |
316 | return tps_6507x_clear_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift); | |
317 | } | |
318 | ||
319 | static int tps6507x_ldo_enable(struct regulator_dev *dev) | |
320 | { | |
321 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
322 | int ldo = rdev_get_id(dev); | |
323 | u8 shift; | |
324 | ||
325 | if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2) | |
326 | return -EINVAL; | |
327 | ||
328 | shift = TPS6507X_MAX_REG_ID - ldo; | |
329 | return tps_6507x_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift); | |
330 | } | |
331 | ||
332 | static int tps6507x_ldo_disable(struct regulator_dev *dev) | |
333 | { | |
334 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
335 | int ldo = rdev_get_id(dev); | |
336 | u8 shift; | |
337 | ||
338 | if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2) | |
339 | return -EINVAL; | |
340 | ||
341 | shift = TPS6507X_MAX_REG_ID - ldo; | |
342 | return tps_6507x_clear_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift); | |
343 | } | |
344 | ||
345 | static int tps6507x_dcdc_get_voltage(struct regulator_dev *dev) | |
346 | { | |
347 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
348 | int data, dcdc = rdev_get_id(dev); | |
349 | u8 reg; | |
350 | ||
351 | switch (dcdc) { | |
352 | case TPS6507X_DCDC_1: | |
353 | reg = TPS6507X_REG_DEFDCDC1; | |
354 | break; | |
355 | case TPS6507X_DCDC_2: | |
356 | reg = TPS6507X_REG_DEFDCDC2_LOW; | |
357 | break; | |
358 | case TPS6507X_DCDC_3: | |
359 | reg = TPS6507X_REG_DEFDCDC3_LOW; | |
360 | break; | |
361 | default: | |
362 | return -EINVAL; | |
363 | } | |
364 | ||
365 | data = tps_6507x_reg_read(tps, reg); | |
366 | if (data < 0) | |
367 | return data; | |
368 | ||
369 | data &= TPS6507X_DEFDCDCX_DCDC_MASK; | |
370 | return tps->info[dcdc]->table[data] * 1000; | |
371 | } | |
372 | ||
373 | static int tps6507x_dcdc_set_voltage(struct regulator_dev *dev, | |
374 | int min_uV, int max_uV) | |
375 | { | |
376 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
377 | int data, vsel, dcdc = rdev_get_id(dev); | |
378 | u8 reg; | |
379 | ||
380 | switch (dcdc) { | |
381 | case TPS6507X_DCDC_1: | |
382 | reg = TPS6507X_REG_DEFDCDC1; | |
383 | break; | |
384 | case TPS6507X_DCDC_2: | |
385 | reg = TPS6507X_REG_DEFDCDC2_LOW; | |
386 | break; | |
387 | case TPS6507X_DCDC_3: | |
388 | reg = TPS6507X_REG_DEFDCDC3_LOW; | |
389 | break; | |
390 | default: | |
391 | return -EINVAL; | |
392 | } | |
393 | ||
394 | if (min_uV < tps->info[dcdc]->min_uV | |
395 | || min_uV > tps->info[dcdc]->max_uV) | |
396 | return -EINVAL; | |
397 | if (max_uV < tps->info[dcdc]->min_uV | |
398 | || max_uV > tps->info[dcdc]->max_uV) | |
399 | return -EINVAL; | |
400 | ||
401 | for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) { | |
402 | int mV = tps->info[dcdc]->table[vsel]; | |
403 | int uV = mV * 1000; | |
404 | ||
405 | /* Break at the first in-range value */ | |
406 | if (min_uV <= uV && uV <= max_uV) | |
407 | break; | |
408 | } | |
409 | ||
410 | /* write to the register in case we found a match */ | |
411 | if (vsel == tps->info[dcdc]->table_len) | |
412 | return -EINVAL; | |
413 | ||
414 | data = tps_6507x_reg_read(tps, reg); | |
415 | if (data < 0) | |
416 | return data; | |
417 | ||
418 | data &= ~TPS6507X_DEFDCDCX_DCDC_MASK; | |
419 | data |= vsel; | |
420 | ||
421 | return tps_6507x_reg_write(tps, reg, data); | |
422 | } | |
423 | ||
424 | static int tps6507x_ldo_get_voltage(struct regulator_dev *dev) | |
425 | { | |
426 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
427 | int data, ldo = rdev_get_id(dev); | |
428 | u8 reg, mask; | |
429 | ||
430 | if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2) | |
431 | return -EINVAL; | |
432 | else { | |
433 | reg = (ldo == TPS6507X_LDO_1 ? | |
434 | TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2); | |
435 | mask = (ldo == TPS6507X_LDO_1 ? | |
436 | TPS6507X_REG_LDO_CTRL1_LDO1_MASK : | |
437 | TPS6507X_REG_DEFLDO2_LDO2_MASK); | |
438 | } | |
439 | ||
440 | data = tps_6507x_reg_read(tps, reg); | |
441 | if (data < 0) | |
442 | return data; | |
443 | ||
444 | data &= mask; | |
445 | return tps->info[ldo]->table[data] * 1000; | |
446 | } | |
447 | ||
448 | static int tps6507x_ldo_set_voltage(struct regulator_dev *dev, | |
449 | int min_uV, int max_uV) | |
450 | { | |
451 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
452 | int data, vsel, ldo = rdev_get_id(dev); | |
453 | u8 reg, mask; | |
454 | ||
455 | if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2) | |
456 | return -EINVAL; | |
457 | else { | |
458 | reg = (ldo == TPS6507X_LDO_1 ? | |
459 | TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2); | |
460 | mask = (ldo == TPS6507X_LDO_1 ? | |
461 | TPS6507X_REG_LDO_CTRL1_LDO1_MASK : | |
462 | TPS6507X_REG_DEFLDO2_LDO2_MASK); | |
463 | } | |
464 | ||
465 | if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV) | |
466 | return -EINVAL; | |
467 | if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV) | |
468 | return -EINVAL; | |
469 | ||
470 | for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) { | |
471 | int mV = tps->info[ldo]->table[vsel]; | |
472 | int uV = mV * 1000; | |
473 | ||
474 | /* Break at the first in-range value */ | |
475 | if (min_uV <= uV && uV <= max_uV) | |
476 | break; | |
477 | } | |
478 | ||
479 | if (vsel == tps->info[ldo]->table_len) | |
480 | return -EINVAL; | |
481 | ||
482 | data = tps_6507x_reg_read(tps, reg); | |
483 | if (data < 0) | |
484 | return data; | |
485 | ||
486 | data &= ~mask; | |
487 | data |= vsel; | |
488 | ||
489 | return tps_6507x_reg_write(tps, reg, data); | |
490 | } | |
491 | ||
492 | static int tps6507x_dcdc_list_voltage(struct regulator_dev *dev, | |
493 | unsigned selector) | |
494 | { | |
495 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
496 | int dcdc = rdev_get_id(dev); | |
497 | ||
498 | if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3) | |
499 | return -EINVAL; | |
500 | ||
501 | if (selector >= tps->info[dcdc]->table_len) | |
502 | return -EINVAL; | |
503 | else | |
504 | return tps->info[dcdc]->table[selector] * 1000; | |
505 | } | |
506 | ||
507 | static int tps6507x_ldo_list_voltage(struct regulator_dev *dev, | |
508 | unsigned selector) | |
509 | { | |
510 | struct tps_pmic *tps = rdev_get_drvdata(dev); | |
511 | int ldo = rdev_get_id(dev); | |
512 | ||
513 | if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2) | |
514 | return -EINVAL; | |
515 | ||
516 | if (selector >= tps->info[ldo]->table_len) | |
517 | return -EINVAL; | |
518 | else | |
519 | return tps->info[ldo]->table[selector] * 1000; | |
520 | } | |
521 | ||
522 | /* Operations permitted on VDCDCx */ | |
523 | static struct regulator_ops tps6507x_dcdc_ops = { | |
524 | .is_enabled = tps6507x_dcdc_is_enabled, | |
525 | .enable = tps6507x_dcdc_enable, | |
526 | .disable = tps6507x_dcdc_disable, | |
527 | .get_voltage = tps6507x_dcdc_get_voltage, | |
528 | .set_voltage = tps6507x_dcdc_set_voltage, | |
529 | .list_voltage = tps6507x_dcdc_list_voltage, | |
530 | }; | |
531 | ||
532 | /* Operations permitted on LDOx */ | |
533 | static struct regulator_ops tps6507x_ldo_ops = { | |
534 | .is_enabled = tps6507x_ldo_is_enabled, | |
535 | .enable = tps6507x_ldo_enable, | |
536 | .disable = tps6507x_ldo_disable, | |
537 | .get_voltage = tps6507x_ldo_get_voltage, | |
538 | .set_voltage = tps6507x_ldo_set_voltage, | |
539 | .list_voltage = tps6507x_ldo_list_voltage, | |
540 | }; | |
541 | ||
56c23492 DT |
542 | static int __devinit tps_6507x_probe(struct i2c_client *client, |
543 | const struct i2c_device_id *id) | |
3fa5b8e0 AA |
544 | { |
545 | static int desc_id; | |
546 | const struct tps_info *info = (void *)id->driver_data; | |
547 | struct regulator_init_data *init_data; | |
548 | struct regulator_dev *rdev; | |
549 | struct tps_pmic *tps; | |
550 | int i; | |
56c23492 | 551 | int error; |
3fa5b8e0 AA |
552 | |
553 | if (!i2c_check_functionality(client->adapter, | |
554 | I2C_FUNC_SMBUS_BYTE_DATA)) | |
555 | return -EIO; | |
556 | ||
557 | /** | |
558 | * init_data points to array of regulator_init structures | |
559 | * coming from the board-evm file. | |
560 | */ | |
561 | init_data = client->dev.platform_data; | |
3fa5b8e0 AA |
562 | if (!init_data) |
563 | return -EIO; | |
564 | ||
565 | tps = kzalloc(sizeof(*tps), GFP_KERNEL); | |
566 | if (!tps) | |
567 | return -ENOMEM; | |
568 | ||
569 | mutex_init(&tps->io_lock); | |
570 | ||
571 | /* common for all regulators */ | |
572 | tps->client = client; | |
573 | ||
574 | for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) { | |
575 | /* Register the regulators */ | |
576 | tps->info[i] = info; | |
577 | tps->desc[i].name = info->name; | |
578 | tps->desc[i].id = desc_id++; | |
579 | tps->desc[i].n_voltages = num_voltages[i]; | |
580 | tps->desc[i].ops = (i > TPS6507X_DCDC_3 ? | |
581 | &tps6507x_ldo_ops : &tps6507x_dcdc_ops); | |
582 | tps->desc[i].type = REGULATOR_VOLTAGE; | |
583 | tps->desc[i].owner = THIS_MODULE; | |
584 | ||
585 | rdev = regulator_register(&tps->desc[i], | |
586 | &client->dev, init_data, tps); | |
587 | if (IS_ERR(rdev)) { | |
588 | dev_err(&client->dev, "failed to register %s\n", | |
589 | id->name); | |
56c23492 DT |
590 | error = PTR_ERR(rdev); |
591 | goto fail; | |
3fa5b8e0 AA |
592 | } |
593 | ||
594 | /* Save regulator for cleanup */ | |
595 | tps->rdev[i] = rdev; | |
596 | } | |
597 | ||
598 | i2c_set_clientdata(client, tps); | |
599 | ||
600 | return 0; | |
56c23492 DT |
601 | |
602 | fail: | |
603 | while (--i >= 0) | |
604 | regulator_unregister(tps->rdev[i]); | |
605 | ||
606 | kfree(tps); | |
607 | return error; | |
3fa5b8e0 AA |
608 | } |
609 | ||
610 | /** | |
611 | * tps_6507x_remove - TPS6507x driver i2c remove handler | |
612 | * @client: i2c driver client device structure | |
613 | * | |
614 | * Unregister TPS driver as an i2c client device driver | |
615 | */ | |
616 | static int __devexit tps_6507x_remove(struct i2c_client *client) | |
617 | { | |
618 | struct tps_pmic *tps = i2c_get_clientdata(client); | |
619 | int i; | |
620 | ||
56c23492 DT |
621 | /* clear the client data in i2c */ |
622 | i2c_set_clientdata(client, NULL); | |
623 | ||
3fa5b8e0 AA |
624 | for (i = 0; i < TPS6507X_NUM_REGULATOR; i++) |
625 | regulator_unregister(tps->rdev[i]); | |
626 | ||
3fa5b8e0 AA |
627 | kfree(tps); |
628 | ||
629 | return 0; | |
630 | } | |
631 | ||
632 | static const struct tps_info tps6507x_regs[] = { | |
633 | { | |
634 | .name = "VDCDC1", | |
635 | .min_uV = 725000, | |
636 | .max_uV = 3300000, | |
637 | .table_len = ARRAY_SIZE(VDCDCx_VSEL_table), | |
638 | .table = VDCDCx_VSEL_table, | |
639 | }, | |
640 | { | |
641 | .name = "VDCDC2", | |
642 | .min_uV = 725000, | |
643 | .max_uV = 3300000, | |
644 | .table_len = ARRAY_SIZE(VDCDCx_VSEL_table), | |
645 | .table = VDCDCx_VSEL_table, | |
646 | }, | |
647 | { | |
648 | .name = "VDCDC3", | |
649 | .min_uV = 725000, | |
650 | .max_uV = 3300000, | |
651 | .table_len = ARRAY_SIZE(VDCDCx_VSEL_table), | |
652 | .table = VDCDCx_VSEL_table, | |
653 | }, | |
654 | { | |
655 | .name = "LDO1", | |
656 | .min_uV = 1000000, | |
657 | .max_uV = 3300000, | |
658 | .table_len = ARRAY_SIZE(LDO1_VSEL_table), | |
659 | .table = LDO1_VSEL_table, | |
660 | }, | |
661 | { | |
662 | .name = "LDO2", | |
663 | .min_uV = 725000, | |
664 | .max_uV = 3300000, | |
665 | .table_len = ARRAY_SIZE(LDO2_VSEL_table), | |
666 | .table = LDO2_VSEL_table, | |
667 | }, | |
668 | }; | |
669 | ||
9e108d33 LG |
670 | static const struct i2c_device_id tps_6507x_id[] = { |
671 | {.name = "tps6507x", | |
672 | .driver_data = (unsigned long) tps6507x_regs,}, | |
673 | { }, | |
3fa5b8e0 AA |
674 | }; |
675 | MODULE_DEVICE_TABLE(i2c, tps_6507x_id); | |
676 | ||
677 | static struct i2c_driver tps_6507x_i2c_driver = { | |
678 | .driver = { | |
679 | .name = "tps6507x", | |
680 | .owner = THIS_MODULE, | |
681 | }, | |
682 | .probe = tps_6507x_probe, | |
683 | .remove = __devexit_p(tps_6507x_remove), | |
9e108d33 | 684 | .id_table = tps_6507x_id, |
3fa5b8e0 AA |
685 | }; |
686 | ||
687 | /** | |
688 | * tps_6507x_init | |
689 | * | |
690 | * Module init function | |
691 | */ | |
692 | static int __init tps_6507x_init(void) | |
693 | { | |
694 | return i2c_add_driver(&tps_6507x_i2c_driver); | |
695 | } | |
696 | subsys_initcall(tps_6507x_init); | |
697 | ||
698 | /** | |
699 | * tps_6507x_cleanup | |
700 | * | |
701 | * Module exit function | |
702 | */ | |
703 | static void __exit tps_6507x_cleanup(void) | |
704 | { | |
705 | i2c_del_driver(&tps_6507x_i2c_driver); | |
706 | } | |
707 | module_exit(tps_6507x_cleanup); | |
708 | ||
709 | MODULE_AUTHOR("Texas Instruments"); | |
710 | MODULE_DESCRIPTION("TPS6507x voltage regulator driver"); | |
9e108d33 | 711 | MODULE_LICENSE("GPL v2"); |