Commit | Line | Data |
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27f37e4b WS |
1 | /* |
2 | * max8660.c -- Voltage regulation for the Maxim 8660/8661 | |
3 | * | |
4 | * based on max1586.c and wm8400-regulator.c | |
5 | * | |
6 | * Copyright (C) 2009 Wolfram Sang, Pengutronix e.K. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the Free | |
10 | * Software Foundation; version 2 of the License. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
19 | * Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Some info: | |
22 | * | |
23 | * Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX8660-MAX8661.pdf | |
24 | * | |
25 | * This chip is a bit nasty because it is a write-only device. Thus, the driver | |
26 | * uses shadow registers to keep track of its values. The main problem appears | |
27 | * to be the initialization: When Linux boots up, we cannot know if the chip is | |
28 | * in the default state or not, so we would have to pass such information in | |
29 | * platform_data. As this adds a bit of complexity to the driver, this is left | |
30 | * out for now until it is really needed. | |
31 | * | |
32 | * [A|S|M]DTV1 registers are currently not used, but [A|S|M]DTV2. | |
33 | * | |
34 | * If the driver is feature complete, it might be worth to check if one set of | |
35 | * functions for V3-V7 is sufficient. For maximum flexibility during | |
36 | * development, they are separated for now. | |
37 | * | |
38 | */ | |
39 | ||
40 | #include <linux/module.h> | |
41 | #include <linux/err.h> | |
42 | #include <linux/i2c.h> | |
43 | #include <linux/platform_device.h> | |
44 | #include <linux/regulator/driver.h> | |
5a0e3ad6 | 45 | #include <linux/slab.h> |
27f37e4b | 46 | #include <linux/regulator/max8660.h> |
abe4c51a DM |
47 | #include <linux/of.h> |
48 | #include <linux/of_device.h> | |
49 | #include <linux/regulator/of_regulator.h> | |
27f37e4b WS |
50 | |
51 | #define MAX8660_DCDC_MIN_UV 725000 | |
52 | #define MAX8660_DCDC_MAX_UV 1800000 | |
53 | #define MAX8660_DCDC_STEP 25000 | |
54 | #define MAX8660_DCDC_MAX_SEL 0x2b | |
55 | ||
56 | #define MAX8660_LDO5_MIN_UV 1700000 | |
57 | #define MAX8660_LDO5_MAX_UV 2000000 | |
58 | #define MAX8660_LDO5_STEP 25000 | |
59 | #define MAX8660_LDO5_MAX_SEL 0x0c | |
60 | ||
61 | #define MAX8660_LDO67_MIN_UV 1800000 | |
62 | #define MAX8660_LDO67_MAX_UV 3300000 | |
63 | #define MAX8660_LDO67_STEP 100000 | |
64 | #define MAX8660_LDO67_MAX_SEL 0x0f | |
65 | ||
66 | enum { | |
67 | MAX8660_OVER1, | |
68 | MAX8660_OVER2, | |
69 | MAX8660_VCC1, | |
70 | MAX8660_ADTV1, | |
71 | MAX8660_ADTV2, | |
72 | MAX8660_SDTV1, | |
73 | MAX8660_SDTV2, | |
74 | MAX8660_MDTV1, | |
75 | MAX8660_MDTV2, | |
76 | MAX8660_L12VCR, | |
77 | MAX8660_FPWM, | |
78 | MAX8660_N_REGS, /* not a real register */ | |
79 | }; | |
80 | ||
81 | struct max8660 { | |
82 | struct i2c_client *client; | |
83 | u8 shadow_regs[MAX8660_N_REGS]; /* as chip is write only */ | |
84 | struct regulator_dev *rdev[]; | |
85 | }; | |
86 | ||
87 | static int max8660_write(struct max8660 *max8660, u8 reg, u8 mask, u8 val) | |
88 | { | |
89 | static const u8 max8660_addresses[MAX8660_N_REGS] = | |
90 | { 0x10, 0x12, 0x20, 0x23, 0x24, 0x29, 0x2a, 0x32, 0x33, 0x39, 0x80 }; | |
91 | ||
92 | int ret; | |
93 | u8 reg_val = (max8660->shadow_regs[reg] & mask) | val; | |
94 | dev_vdbg(&max8660->client->dev, "Writing reg %02x with %02x\n", | |
95 | max8660_addresses[reg], reg_val); | |
96 | ||
97 | ret = i2c_smbus_write_byte_data(max8660->client, | |
98 | max8660_addresses[reg], reg_val); | |
99 | if (ret == 0) | |
100 | max8660->shadow_regs[reg] = reg_val; | |
101 | ||
102 | return ret; | |
103 | } | |
104 | ||
105 | ||
106 | /* | |
107 | * DCDC functions | |
108 | */ | |
109 | ||
110 | static int max8660_dcdc_is_enabled(struct regulator_dev *rdev) | |
111 | { | |
112 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
113 | u8 val = max8660->shadow_regs[MAX8660_OVER1]; | |
114 | u8 mask = (rdev_get_id(rdev) == MAX8660_V3) ? 1 : 4; | |
115 | return !!(val & mask); | |
116 | } | |
117 | ||
118 | static int max8660_dcdc_enable(struct regulator_dev *rdev) | |
119 | { | |
120 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
121 | u8 bit = (rdev_get_id(rdev) == MAX8660_V3) ? 1 : 4; | |
122 | return max8660_write(max8660, MAX8660_OVER1, 0xff, bit); | |
123 | } | |
124 | ||
125 | static int max8660_dcdc_disable(struct regulator_dev *rdev) | |
126 | { | |
127 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
128 | u8 mask = (rdev_get_id(rdev) == MAX8660_V3) ? ~1 : ~4; | |
129 | return max8660_write(max8660, MAX8660_OVER1, mask, 0); | |
130 | } | |
131 | ||
9392c4f0 | 132 | static int max8660_dcdc_get_voltage_sel(struct regulator_dev *rdev) |
27f37e4b WS |
133 | { |
134 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
9392c4f0 | 135 | |
27f37e4b WS |
136 | u8 reg = (rdev_get_id(rdev) == MAX8660_V3) ? MAX8660_ADTV2 : MAX8660_SDTV2; |
137 | u8 selector = max8660->shadow_regs[reg]; | |
9392c4f0 | 138 | return selector; |
27f37e4b WS |
139 | } |
140 | ||
5eb3394f AL |
141 | static int max8660_dcdc_set_voltage_sel(struct regulator_dev *rdev, |
142 | unsigned int selector) | |
27f37e4b WS |
143 | { |
144 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
5eb3394f | 145 | u8 reg, bits; |
27f37e4b WS |
146 | int ret; |
147 | ||
27f37e4b WS |
148 | reg = (rdev_get_id(rdev) == MAX8660_V3) ? MAX8660_ADTV2 : MAX8660_SDTV2; |
149 | ret = max8660_write(max8660, reg, 0, selector); | |
150 | if (ret) | |
151 | return ret; | |
152 | ||
153 | /* Select target voltage register and activate regulation */ | |
154 | bits = (rdev_get_id(rdev) == MAX8660_V3) ? 0x03 : 0x30; | |
155 | return max8660_write(max8660, MAX8660_VCC1, 0xff, bits); | |
156 | } | |
157 | ||
158 | static struct regulator_ops max8660_dcdc_ops = { | |
159 | .is_enabled = max8660_dcdc_is_enabled, | |
134d34a8 | 160 | .list_voltage = regulator_list_voltage_linear, |
5eb3394f AL |
161 | .map_voltage = regulator_map_voltage_linear, |
162 | .set_voltage_sel = max8660_dcdc_set_voltage_sel, | |
9392c4f0 | 163 | .get_voltage_sel = max8660_dcdc_get_voltage_sel, |
27f37e4b WS |
164 | }; |
165 | ||
166 | ||
167 | /* | |
168 | * LDO5 functions | |
169 | */ | |
170 | ||
9392c4f0 | 171 | static int max8660_ldo5_get_voltage_sel(struct regulator_dev *rdev) |
27f37e4b WS |
172 | { |
173 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
27f37e4b | 174 | |
9392c4f0 AL |
175 | u8 selector = max8660->shadow_regs[MAX8660_MDTV2]; |
176 | return selector; | |
27f37e4b WS |
177 | } |
178 | ||
5eb3394f AL |
179 | static int max8660_ldo5_set_voltage_sel(struct regulator_dev *rdev, |
180 | unsigned int selector) | |
27f37e4b WS |
181 | { |
182 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
27f37e4b WS |
183 | int ret; |
184 | ||
27f37e4b WS |
185 | ret = max8660_write(max8660, MAX8660_MDTV2, 0, selector); |
186 | if (ret) | |
187 | return ret; | |
188 | ||
189 | /* Select target voltage register and activate regulation */ | |
190 | return max8660_write(max8660, MAX8660_VCC1, 0xff, 0xc0); | |
191 | } | |
192 | ||
193 | static struct regulator_ops max8660_ldo5_ops = { | |
134d34a8 | 194 | .list_voltage = regulator_list_voltage_linear, |
5eb3394f AL |
195 | .map_voltage = regulator_map_voltage_linear, |
196 | .set_voltage_sel = max8660_ldo5_set_voltage_sel, | |
9392c4f0 | 197 | .get_voltage_sel = max8660_ldo5_get_voltage_sel, |
27f37e4b WS |
198 | }; |
199 | ||
200 | ||
201 | /* | |
202 | * LDO67 functions | |
203 | */ | |
204 | ||
205 | static int max8660_ldo67_is_enabled(struct regulator_dev *rdev) | |
206 | { | |
207 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
208 | u8 val = max8660->shadow_regs[MAX8660_OVER2]; | |
209 | u8 mask = (rdev_get_id(rdev) == MAX8660_V6) ? 2 : 4; | |
210 | return !!(val & mask); | |
211 | } | |
212 | ||
213 | static int max8660_ldo67_enable(struct regulator_dev *rdev) | |
214 | { | |
215 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
216 | u8 bit = (rdev_get_id(rdev) == MAX8660_V6) ? 2 : 4; | |
217 | return max8660_write(max8660, MAX8660_OVER2, 0xff, bit); | |
218 | } | |
219 | ||
220 | static int max8660_ldo67_disable(struct regulator_dev *rdev) | |
221 | { | |
222 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
223 | u8 mask = (rdev_get_id(rdev) == MAX8660_V6) ? ~2 : ~4; | |
224 | return max8660_write(max8660, MAX8660_OVER2, mask, 0); | |
225 | } | |
226 | ||
9392c4f0 | 227 | static int max8660_ldo67_get_voltage_sel(struct regulator_dev *rdev) |
27f37e4b WS |
228 | { |
229 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
9392c4f0 | 230 | |
27f37e4b WS |
231 | u8 shift = (rdev_get_id(rdev) == MAX8660_V6) ? 0 : 4; |
232 | u8 selector = (max8660->shadow_regs[MAX8660_L12VCR] >> shift) & 0xf; | |
9392c4f0 | 233 | return selector; |
27f37e4b WS |
234 | } |
235 | ||
5eb3394f AL |
236 | static int max8660_ldo67_set_voltage_sel(struct regulator_dev *rdev, |
237 | unsigned int selector) | |
27f37e4b WS |
238 | { |
239 | struct max8660 *max8660 = rdev_get_drvdata(rdev); | |
3a93f2a9 | 240 | |
27f37e4b WS |
241 | if (rdev_get_id(rdev) == MAX8660_V6) |
242 | return max8660_write(max8660, MAX8660_L12VCR, 0xf0, selector); | |
243 | else | |
5eb3394f AL |
244 | return max8660_write(max8660, MAX8660_L12VCR, 0x0f, |
245 | selector << 4); | |
27f37e4b WS |
246 | } |
247 | ||
248 | static struct regulator_ops max8660_ldo67_ops = { | |
249 | .is_enabled = max8660_ldo67_is_enabled, | |
250 | .enable = max8660_ldo67_enable, | |
251 | .disable = max8660_ldo67_disable, | |
134d34a8 | 252 | .list_voltage = regulator_list_voltage_linear, |
5eb3394f | 253 | .map_voltage = regulator_map_voltage_linear, |
9392c4f0 | 254 | .get_voltage_sel = max8660_ldo67_get_voltage_sel, |
5eb3394f | 255 | .set_voltage_sel = max8660_ldo67_set_voltage_sel, |
27f37e4b WS |
256 | }; |
257 | ||
621adb30 | 258 | static const struct regulator_desc max8660_reg[] = { |
27f37e4b WS |
259 | { |
260 | .name = "V3(DCDC)", | |
261 | .id = MAX8660_V3, | |
262 | .ops = &max8660_dcdc_ops, | |
263 | .type = REGULATOR_VOLTAGE, | |
264 | .n_voltages = MAX8660_DCDC_MAX_SEL + 1, | |
265 | .owner = THIS_MODULE, | |
134d34a8 AL |
266 | .min_uV = MAX8660_DCDC_MIN_UV, |
267 | .uV_step = MAX8660_DCDC_STEP, | |
27f37e4b WS |
268 | }, |
269 | { | |
270 | .name = "V4(DCDC)", | |
271 | .id = MAX8660_V4, | |
272 | .ops = &max8660_dcdc_ops, | |
273 | .type = REGULATOR_VOLTAGE, | |
274 | .n_voltages = MAX8660_DCDC_MAX_SEL + 1, | |
275 | .owner = THIS_MODULE, | |
134d34a8 AL |
276 | .min_uV = MAX8660_DCDC_MIN_UV, |
277 | .uV_step = MAX8660_DCDC_STEP, | |
27f37e4b WS |
278 | }, |
279 | { | |
280 | .name = "V5(LDO)", | |
281 | .id = MAX8660_V5, | |
282 | .ops = &max8660_ldo5_ops, | |
283 | .type = REGULATOR_VOLTAGE, | |
284 | .n_voltages = MAX8660_LDO5_MAX_SEL + 1, | |
285 | .owner = THIS_MODULE, | |
134d34a8 AL |
286 | .min_uV = MAX8660_LDO5_MIN_UV, |
287 | .uV_step = MAX8660_LDO5_STEP, | |
27f37e4b WS |
288 | }, |
289 | { | |
290 | .name = "V6(LDO)", | |
291 | .id = MAX8660_V6, | |
292 | .ops = &max8660_ldo67_ops, | |
293 | .type = REGULATOR_VOLTAGE, | |
294 | .n_voltages = MAX8660_LDO67_MAX_SEL + 1, | |
295 | .owner = THIS_MODULE, | |
134d34a8 AL |
296 | .min_uV = MAX8660_LDO67_MIN_UV, |
297 | .uV_step = MAX8660_LDO67_STEP, | |
27f37e4b WS |
298 | }, |
299 | { | |
300 | .name = "V7(LDO)", | |
301 | .id = MAX8660_V7, | |
302 | .ops = &max8660_ldo67_ops, | |
303 | .type = REGULATOR_VOLTAGE, | |
304 | .n_voltages = MAX8660_LDO67_MAX_SEL + 1, | |
305 | .owner = THIS_MODULE, | |
134d34a8 AL |
306 | .min_uV = MAX8660_LDO67_MIN_UV, |
307 | .uV_step = MAX8660_LDO67_STEP, | |
27f37e4b WS |
308 | }, |
309 | }; | |
310 | ||
4a678f03 DM |
311 | enum { |
312 | MAX8660 = 0, | |
313 | MAX8661 = 1, | |
314 | }; | |
315 | ||
abe4c51a DM |
316 | #ifdef CONFIG_OF |
317 | static const struct of_device_id max8660_dt_ids[] = { | |
318 | { .compatible = "maxim,max8660", .data = (void *) MAX8660 }, | |
319 | { .compatible = "maxim,max8661", .data = (void *) MAX8661 }, | |
320 | { } | |
321 | }; | |
322 | MODULE_DEVICE_TABLE(of, max8660_dt_ids); | |
323 | ||
324 | static int max8660_pdata_from_dt(struct device *dev, | |
325 | struct device_node **of_node, | |
326 | struct max8660_platform_data *pdata) | |
327 | { | |
328 | int matched, i; | |
329 | struct device_node *np; | |
330 | struct max8660_subdev_data *sub; | |
331 | struct of_regulator_match rmatch[ARRAY_SIZE(max8660_reg)]; | |
332 | ||
826adb49 | 333 | np = of_get_child_by_name(dev->of_node, "regulators"); |
abe4c51a DM |
334 | if (!np) { |
335 | dev_err(dev, "missing 'regulators' subnode in DT\n"); | |
336 | return -EINVAL; | |
337 | } | |
338 | ||
339 | for (i = 0; i < ARRAY_SIZE(rmatch); i++) | |
340 | rmatch[i].name = max8660_reg[i].name; | |
341 | ||
342 | matched = of_regulator_match(dev, np, rmatch, ARRAY_SIZE(rmatch)); | |
343 | if (matched <= 0) | |
344 | return matched; | |
345 | ||
346 | pdata->subdevs = devm_kzalloc(dev, sizeof(struct max8660_subdev_data) * | |
347 | matched, GFP_KERNEL); | |
348 | if (!pdata->subdevs) | |
349 | return -ENOMEM; | |
350 | ||
351 | pdata->num_subdevs = matched; | |
352 | sub = pdata->subdevs; | |
353 | ||
354 | for (i = 0; i < matched; i++) { | |
355 | sub->id = i; | |
356 | sub->name = rmatch[i].name; | |
357 | sub->platform_data = rmatch[i].init_data; | |
358 | of_node[i] = rmatch[i].of_node; | |
359 | sub++; | |
360 | } | |
361 | ||
362 | return 0; | |
363 | } | |
364 | #else | |
365 | static inline int max8660_pdata_from_dt(struct device *dev, | |
366 | struct device_node **of_node, | |
d6c7e113 | 367 | struct max8660_platform_data *pdata) |
abe4c51a DM |
368 | { |
369 | return 0; | |
370 | } | |
371 | #endif | |
372 | ||
a5023574 | 373 | static int max8660_probe(struct i2c_client *client, |
308f100f | 374 | const struct i2c_device_id *i2c_id) |
27f37e4b WS |
375 | { |
376 | struct regulator_dev **rdev; | |
de492e8d DM |
377 | struct device *dev = &client->dev; |
378 | struct max8660_platform_data *pdata = dev_get_platdata(dev); | |
c172708d | 379 | struct regulator_config config = { }; |
27f37e4b WS |
380 | struct max8660 *max8660; |
381 | int boot_on, i, id, ret = -EINVAL; | |
abe4c51a | 382 | struct device_node *of_node[MAX8660_V_END]; |
d6c7e113 | 383 | unsigned long type; |
27f37e4b | 384 | |
abe4c51a DM |
385 | if (dev->of_node && !pdata) { |
386 | const struct of_device_id *id; | |
387 | struct max8660_platform_data pdata_of; | |
388 | ||
389 | id = of_match_device(of_match_ptr(max8660_dt_ids), dev); | |
390 | if (!id) | |
391 | return -ENODEV; | |
392 | ||
393 | ret = max8660_pdata_from_dt(dev, of_node, &pdata_of); | |
394 | if (ret < 0) | |
395 | return ret; | |
396 | ||
397 | pdata = &pdata_of; | |
d6c7e113 | 398 | type = (unsigned long) id->data; |
abe4c51a DM |
399 | } else { |
400 | type = i2c_id->driver_data; | |
401 | memset(of_node, 0, sizeof(of_node)); | |
402 | } | |
403 | ||
27f37e4b | 404 | if (pdata->num_subdevs > MAX8660_V_END) { |
de492e8d | 405 | dev_err(dev, "Too many regulators found!\n"); |
4d26f7d5 | 406 | return -EINVAL; |
27f37e4b WS |
407 | } |
408 | ||
de492e8d | 409 | max8660 = devm_kzalloc(dev, sizeof(struct max8660) + |
27f37e4b WS |
410 | sizeof(struct regulator_dev *) * MAX8660_V_END, |
411 | GFP_KERNEL); | |
4d26f7d5 AL |
412 | if (!max8660) |
413 | return -ENOMEM; | |
27f37e4b WS |
414 | |
415 | max8660->client = client; | |
416 | rdev = max8660->rdev; | |
417 | ||
418 | if (pdata->en34_is_high) { | |
419 | /* Simulate always on */ | |
420 | max8660->shadow_regs[MAX8660_OVER1] = 5; | |
421 | } else { | |
422 | /* Otherwise devices can be toggled via software */ | |
423 | max8660_dcdc_ops.enable = max8660_dcdc_enable; | |
424 | max8660_dcdc_ops.disable = max8660_dcdc_disable; | |
425 | } | |
426 | ||
427 | /* | |
428 | * First, set up shadow registers to prevent glitches. As some | |
429 | * registers are shared between regulators, everything must be properly | |
430 | * set up for all regulators in advance. | |
431 | */ | |
432 | max8660->shadow_regs[MAX8660_ADTV1] = | |
433 | max8660->shadow_regs[MAX8660_ADTV2] = | |
434 | max8660->shadow_regs[MAX8660_SDTV1] = | |
435 | max8660->shadow_regs[MAX8660_SDTV2] = 0x1b; | |
436 | max8660->shadow_regs[MAX8660_MDTV1] = | |
437 | max8660->shadow_regs[MAX8660_MDTV2] = 0x04; | |
438 | ||
439 | for (i = 0; i < pdata->num_subdevs; i++) { | |
440 | ||
441 | if (!pdata->subdevs[i].platform_data) | |
dcfb6b56 | 442 | return ret; |
27f37e4b WS |
443 | |
444 | boot_on = pdata->subdevs[i].platform_data->constraints.boot_on; | |
445 | ||
446 | switch (pdata->subdevs[i].id) { | |
447 | case MAX8660_V3: | |
448 | if (boot_on) | |
449 | max8660->shadow_regs[MAX8660_OVER1] |= 1; | |
450 | break; | |
451 | ||
452 | case MAX8660_V4: | |
453 | if (boot_on) | |
454 | max8660->shadow_regs[MAX8660_OVER1] |= 4; | |
455 | break; | |
456 | ||
457 | case MAX8660_V5: | |
458 | break; | |
459 | ||
460 | case MAX8660_V6: | |
461 | if (boot_on) | |
462 | max8660->shadow_regs[MAX8660_OVER2] |= 2; | |
463 | break; | |
464 | ||
465 | case MAX8660_V7: | |
4a678f03 | 466 | if (type == MAX8661) { |
de492e8d | 467 | dev_err(dev, "Regulator not on this chip!\n"); |
dcfb6b56 | 468 | return -EINVAL; |
27f37e4b WS |
469 | } |
470 | ||
471 | if (boot_on) | |
472 | max8660->shadow_regs[MAX8660_OVER2] |= 4; | |
473 | break; | |
474 | ||
475 | default: | |
de492e8d | 476 | dev_err(dev, "invalid regulator %s\n", |
27f37e4b | 477 | pdata->subdevs[i].name); |
dcfb6b56 | 478 | return ret; |
27f37e4b WS |
479 | } |
480 | } | |
481 | ||
482 | /* Finally register devices */ | |
483 | for (i = 0; i < pdata->num_subdevs; i++) { | |
484 | ||
485 | id = pdata->subdevs[i].id; | |
486 | ||
de492e8d | 487 | config.dev = dev; |
c172708d | 488 | config.init_data = pdata->subdevs[i].platform_data; |
abe4c51a | 489 | config.of_node = of_node[i]; |
c172708d MB |
490 | config.driver_data = max8660; |
491 | ||
dcfb6b56 SK |
492 | rdev[i] = devm_regulator_register(&client->dev, |
493 | &max8660_reg[id], &config); | |
27f37e4b WS |
494 | if (IS_ERR(rdev[i])) { |
495 | ret = PTR_ERR(rdev[i]); | |
dcfb6b56 | 496 | dev_err(&client->dev, "failed to register %s\n", |
27f37e4b | 497 | max8660_reg[id].name); |
dcfb6b56 | 498 | return PTR_ERR(rdev[i]); |
27f37e4b WS |
499 | } |
500 | } | |
501 | ||
53a4befa | 502 | i2c_set_clientdata(client, max8660); |
27f37e4b | 503 | return 0; |
27f37e4b WS |
504 | } |
505 | ||
506 | static const struct i2c_device_id max8660_id[] = { | |
4a678f03 DM |
507 | { .name = "max8660", .driver_data = MAX8660 }, |
508 | { .name = "max8661", .driver_data = MAX8661 }, | |
27f37e4b WS |
509 | { } |
510 | }; | |
511 | MODULE_DEVICE_TABLE(i2c, max8660_id); | |
512 | ||
513 | static struct i2c_driver max8660_driver = { | |
514 | .probe = max8660_probe, | |
27f37e4b WS |
515 | .driver = { |
516 | .name = "max8660", | |
308f100f | 517 | .owner = THIS_MODULE, |
27f37e4b WS |
518 | }, |
519 | .id_table = max8660_id, | |
520 | }; | |
521 | ||
522 | static int __init max8660_init(void) | |
523 | { | |
524 | return i2c_add_driver(&max8660_driver); | |
525 | } | |
526 | subsys_initcall(max8660_init); | |
527 | ||
528 | static void __exit max8660_exit(void) | |
529 | { | |
530 | i2c_del_driver(&max8660_driver); | |
531 | } | |
532 | module_exit(max8660_exit); | |
533 | ||
534 | /* Module information */ | |
535 | MODULE_DESCRIPTION("MAXIM 8660/8661 voltage regulator driver"); | |
536 | MODULE_AUTHOR("Wolfram Sang"); | |
537 | MODULE_LICENSE("GPL v2"); |