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