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Wolfram Sang27f37e42009-09-25 09:39:26 +02001/*
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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090045#include <linux/slab.h>
Wolfram Sang27f37e42009-09-25 09:39:26 +020046#include <linux/regulator/max8660.h>
Daniel Mackabe4c512013-08-02 12:59:44 +020047#include <linux/of.h>
48#include <linux/of_device.h>
49#include <linux/regulator/of_regulator.h>
Wolfram Sang27f37e42009-09-25 09:39:26 +020050
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
66enum {
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
81struct 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
87static 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
110static 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
118static 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
125static 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
Axel Lin9392c4f2012-05-15 21:42:12 +0800132static int max8660_dcdc_get_voltage_sel(struct regulator_dev *rdev)
Wolfram Sang27f37e42009-09-25 09:39:26 +0200133{
134 struct max8660 *max8660 = rdev_get_drvdata(rdev);
Axel Lin9392c4f2012-05-15 21:42:12 +0800135
Wolfram Sang27f37e42009-09-25 09:39:26 +0200136 u8 reg = (rdev_get_id(rdev) == MAX8660_V3) ? MAX8660_ADTV2 : MAX8660_SDTV2;
137 u8 selector = max8660->shadow_regs[reg];
Axel Lin9392c4f2012-05-15 21:42:12 +0800138 return selector;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200139}
140
Axel Lin5eb33942012-05-15 21:43:29 +0800141static int max8660_dcdc_set_voltage_sel(struct regulator_dev *rdev,
142 unsigned int selector)
Wolfram Sang27f37e42009-09-25 09:39:26 +0200143{
144 struct max8660 *max8660 = rdev_get_drvdata(rdev);
Axel Lin5eb33942012-05-15 21:43:29 +0800145 u8 reg, bits;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200146 int ret;
147
Wolfram Sang27f37e42009-09-25 09:39:26 +0200148 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
158static struct regulator_ops max8660_dcdc_ops = {
159 .is_enabled = max8660_dcdc_is_enabled,
Axel Lin134d34a2012-05-15 21:41:18 +0800160 .list_voltage = regulator_list_voltage_linear,
Axel Lin5eb33942012-05-15 21:43:29 +0800161 .map_voltage = regulator_map_voltage_linear,
162 .set_voltage_sel = max8660_dcdc_set_voltage_sel,
Axel Lin9392c4f2012-05-15 21:42:12 +0800163 .get_voltage_sel = max8660_dcdc_get_voltage_sel,
Wolfram Sang27f37e42009-09-25 09:39:26 +0200164};
165
166
167/*
168 * LDO5 functions
169 */
170
Axel Lin9392c4f2012-05-15 21:42:12 +0800171static int max8660_ldo5_get_voltage_sel(struct regulator_dev *rdev)
Wolfram Sang27f37e42009-09-25 09:39:26 +0200172{
173 struct max8660 *max8660 = rdev_get_drvdata(rdev);
Wolfram Sang27f37e42009-09-25 09:39:26 +0200174
Axel Lin9392c4f2012-05-15 21:42:12 +0800175 u8 selector = max8660->shadow_regs[MAX8660_MDTV2];
176 return selector;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200177}
178
Axel Lin5eb33942012-05-15 21:43:29 +0800179static int max8660_ldo5_set_voltage_sel(struct regulator_dev *rdev,
180 unsigned int selector)
Wolfram Sang27f37e42009-09-25 09:39:26 +0200181{
182 struct max8660 *max8660 = rdev_get_drvdata(rdev);
Wolfram Sang27f37e42009-09-25 09:39:26 +0200183 int ret;
184
Wolfram Sang27f37e42009-09-25 09:39:26 +0200185 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
193static struct regulator_ops max8660_ldo5_ops = {
Axel Lin134d34a2012-05-15 21:41:18 +0800194 .list_voltage = regulator_list_voltage_linear,
Axel Lin5eb33942012-05-15 21:43:29 +0800195 .map_voltage = regulator_map_voltage_linear,
196 .set_voltage_sel = max8660_ldo5_set_voltage_sel,
Axel Lin9392c4f2012-05-15 21:42:12 +0800197 .get_voltage_sel = max8660_ldo5_get_voltage_sel,
Wolfram Sang27f37e42009-09-25 09:39:26 +0200198};
199
200
201/*
202 * LDO67 functions
203 */
204
205static 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
213static 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
220static 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
Axel Lin9392c4f2012-05-15 21:42:12 +0800227static int max8660_ldo67_get_voltage_sel(struct regulator_dev *rdev)
Wolfram Sang27f37e42009-09-25 09:39:26 +0200228{
229 struct max8660 *max8660 = rdev_get_drvdata(rdev);
Axel Lin9392c4f2012-05-15 21:42:12 +0800230
Wolfram Sang27f37e42009-09-25 09:39:26 +0200231 u8 shift = (rdev_get_id(rdev) == MAX8660_V6) ? 0 : 4;
232 u8 selector = (max8660->shadow_regs[MAX8660_L12VCR] >> shift) & 0xf;
Axel Lin9392c4f2012-05-15 21:42:12 +0800233 return selector;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200234}
235
Axel Lin5eb33942012-05-15 21:43:29 +0800236static int max8660_ldo67_set_voltage_sel(struct regulator_dev *rdev,
237 unsigned int selector)
Wolfram Sang27f37e42009-09-25 09:39:26 +0200238{
239 struct max8660 *max8660 = rdev_get_drvdata(rdev);
Mark Brown3a93f2a2010-11-10 14:38:29 +0000240
Wolfram Sang27f37e42009-09-25 09:39:26 +0200241 if (rdev_get_id(rdev) == MAX8660_V6)
242 return max8660_write(max8660, MAX8660_L12VCR, 0xf0, selector);
243 else
Axel Lin5eb33942012-05-15 21:43:29 +0800244 return max8660_write(max8660, MAX8660_L12VCR, 0x0f,
245 selector << 4);
Wolfram Sang27f37e42009-09-25 09:39:26 +0200246}
247
248static struct regulator_ops max8660_ldo67_ops = {
249 .is_enabled = max8660_ldo67_is_enabled,
250 .enable = max8660_ldo67_enable,
251 .disable = max8660_ldo67_disable,
Axel Lin134d34a2012-05-15 21:41:18 +0800252 .list_voltage = regulator_list_voltage_linear,
Axel Lin5eb33942012-05-15 21:43:29 +0800253 .map_voltage = regulator_map_voltage_linear,
Axel Lin9392c4f2012-05-15 21:42:12 +0800254 .get_voltage_sel = max8660_ldo67_get_voltage_sel,
Axel Lin5eb33942012-05-15 21:43:29 +0800255 .set_voltage_sel = max8660_ldo67_set_voltage_sel,
Wolfram Sang27f37e42009-09-25 09:39:26 +0200256};
257
Axel Lin621adb32012-04-06 08:26:59 +0800258static const struct regulator_desc max8660_reg[] = {
Wolfram Sang27f37e42009-09-25 09:39:26 +0200259 {
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,
Axel Lin134d34a2012-05-15 21:41:18 +0800266 .min_uV = MAX8660_DCDC_MIN_UV,
267 .uV_step = MAX8660_DCDC_STEP,
Wolfram Sang27f37e42009-09-25 09:39:26 +0200268 },
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,
Axel Lin134d34a2012-05-15 21:41:18 +0800276 .min_uV = MAX8660_DCDC_MIN_UV,
277 .uV_step = MAX8660_DCDC_STEP,
Wolfram Sang27f37e42009-09-25 09:39:26 +0200278 },
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,
Axel Lin134d34a2012-05-15 21:41:18 +0800286 .min_uV = MAX8660_LDO5_MIN_UV,
287 .uV_step = MAX8660_LDO5_STEP,
Wolfram Sang27f37e42009-09-25 09:39:26 +0200288 },
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,
Axel Lin134d34a2012-05-15 21:41:18 +0800296 .min_uV = MAX8660_LDO67_MIN_UV,
297 .uV_step = MAX8660_LDO67_STEP,
Wolfram Sang27f37e42009-09-25 09:39:26 +0200298 },
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,
Axel Lin134d34a2012-05-15 21:41:18 +0800306 .min_uV = MAX8660_LDO67_MIN_UV,
307 .uV_step = MAX8660_LDO67_STEP,
Wolfram Sang27f37e42009-09-25 09:39:26 +0200308 },
309};
310
Daniel Mack4a678f02013-08-02 10:19:15 +0200311enum {
312 MAX8660 = 0,
313 MAX8661 = 1,
314};
315
Daniel Mackabe4c512013-08-02 12:59:44 +0200316#ifdef CONFIG_OF
317static const struct of_device_id max8660_dt_ids[] = {
318 { .compatible = "maxim,max8660", .data = (void *) MAX8660 },
319 { .compatible = "maxim,max8661", .data = (void *) MAX8661 },
320 { }
321};
322MODULE_DEVICE_TABLE(of, max8660_dt_ids);
323
324static 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
333 np = of_find_node_by_name(dev->of_node, "regulators");
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
365static inline int max8660_pdata_from_dt(struct device *dev,
366 struct device_node **of_node,
Daniel Mackd6c7e112013-08-08 12:02:18 +0200367 struct max8660_platform_data *pdata)
Daniel Mackabe4c512013-08-02 12:59:44 +0200368{
369 return 0;
370}
371#endif
372
Bill Pembertona5023572012-11-19 13:22:22 -0500373static int max8660_probe(struct i2c_client *client,
Dmitry Torokhov308f1002010-02-23 23:38:28 -0800374 const struct i2c_device_id *i2c_id)
Wolfram Sang27f37e42009-09-25 09:39:26 +0200375{
376 struct regulator_dev **rdev;
Daniel Mackde492e82013-08-02 10:19:16 +0200377 struct device *dev = &client->dev;
378 struct max8660_platform_data *pdata = dev_get_platdata(dev);
Mark Brownc1727082012-04-04 00:50:22 +0100379 struct regulator_config config = { };
Wolfram Sang27f37e42009-09-25 09:39:26 +0200380 struct max8660 *max8660;
381 int boot_on, i, id, ret = -EINVAL;
Daniel Mackabe4c512013-08-02 12:59:44 +0200382 struct device_node *of_node[MAX8660_V_END];
Daniel Mackd6c7e112013-08-08 12:02:18 +0200383 unsigned long type;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200384
Daniel Mackabe4c512013-08-02 12:59:44 +0200385 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;
Daniel Mackd6c7e112013-08-08 12:02:18 +0200398 type = (unsigned long) id->data;
Daniel Mackabe4c512013-08-02 12:59:44 +0200399 } else {
400 type = i2c_id->driver_data;
401 memset(of_node, 0, sizeof(of_node));
402 }
403
Wolfram Sang27f37e42009-09-25 09:39:26 +0200404 if (pdata->num_subdevs > MAX8660_V_END) {
Daniel Mackde492e82013-08-02 10:19:16 +0200405 dev_err(dev, "Too many regulators found!\n");
Axel Lin4d26f7d2012-04-11 23:08:27 +0800406 return -EINVAL;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200407 }
408
Daniel Mackde492e82013-08-02 10:19:16 +0200409 max8660 = devm_kzalloc(dev, sizeof(struct max8660) +
Wolfram Sang27f37e42009-09-25 09:39:26 +0200410 sizeof(struct regulator_dev *) * MAX8660_V_END,
411 GFP_KERNEL);
Axel Lin4d26f7d2012-04-11 23:08:27 +0800412 if (!max8660)
413 return -ENOMEM;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200414
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)
Sachin Kamatdcfb6b52013-09-04 11:07:58 +0530442 return ret;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200443
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:
Daniel Mack4a678f02013-08-02 10:19:15 +0200466 if (type == MAX8661) {
Daniel Mackde492e82013-08-02 10:19:16 +0200467 dev_err(dev, "Regulator not on this chip!\n");
Sachin Kamatdcfb6b52013-09-04 11:07:58 +0530468 return -EINVAL;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200469 }
470
471 if (boot_on)
472 max8660->shadow_regs[MAX8660_OVER2] |= 4;
473 break;
474
475 default:
Daniel Mackde492e82013-08-02 10:19:16 +0200476 dev_err(dev, "invalid regulator %s\n",
Wolfram Sang27f37e42009-09-25 09:39:26 +0200477 pdata->subdevs[i].name);
Sachin Kamatdcfb6b52013-09-04 11:07:58 +0530478 return ret;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200479 }
480 }
481
482 /* Finally register devices */
483 for (i = 0; i < pdata->num_subdevs; i++) {
484
485 id = pdata->subdevs[i].id;
486
Daniel Mackde492e82013-08-02 10:19:16 +0200487 config.dev = dev;
Mark Brownc1727082012-04-04 00:50:22 +0100488 config.init_data = pdata->subdevs[i].platform_data;
Daniel Mackabe4c512013-08-02 12:59:44 +0200489 config.of_node = of_node[i];
Mark Brownc1727082012-04-04 00:50:22 +0100490 config.driver_data = max8660;
491
Sachin Kamatdcfb6b52013-09-04 11:07:58 +0530492 rdev[i] = devm_regulator_register(&client->dev,
493 &max8660_reg[id], &config);
Wolfram Sang27f37e42009-09-25 09:39:26 +0200494 if (IS_ERR(rdev[i])) {
495 ret = PTR_ERR(rdev[i]);
Sachin Kamatdcfb6b52013-09-04 11:07:58 +0530496 dev_err(&client->dev, "failed to register %s\n",
Wolfram Sang27f37e42009-09-25 09:39:26 +0200497 max8660_reg[id].name);
Sachin Kamatdcfb6b52013-09-04 11:07:58 +0530498 return PTR_ERR(rdev[i]);
Wolfram Sang27f37e42009-09-25 09:39:26 +0200499 }
500 }
501
Axel Lin53a4bef2010-08-06 13:35:27 +0800502 i2c_set_clientdata(client, max8660);
Wolfram Sang27f37e42009-09-25 09:39:26 +0200503 return 0;
Wolfram Sang27f37e42009-09-25 09:39:26 +0200504}
505
506static const struct i2c_device_id max8660_id[] = {
Daniel Mack4a678f02013-08-02 10:19:15 +0200507 { .name = "max8660", .driver_data = MAX8660 },
508 { .name = "max8661", .driver_data = MAX8661 },
Wolfram Sang27f37e42009-09-25 09:39:26 +0200509 { }
510};
511MODULE_DEVICE_TABLE(i2c, max8660_id);
512
513static struct i2c_driver max8660_driver = {
514 .probe = max8660_probe,
Wolfram Sang27f37e42009-09-25 09:39:26 +0200515 .driver = {
516 .name = "max8660",
Dmitry Torokhov308f1002010-02-23 23:38:28 -0800517 .owner = THIS_MODULE,
Wolfram Sang27f37e42009-09-25 09:39:26 +0200518 },
519 .id_table = max8660_id,
520};
521
522static int __init max8660_init(void)
523{
524 return i2c_add_driver(&max8660_driver);
525}
526subsys_initcall(max8660_init);
527
528static void __exit max8660_exit(void)
529{
530 i2c_del_driver(&max8660_driver);
531}
532module_exit(max8660_exit);
533
534/* Module information */
535MODULE_DESCRIPTION("MAXIM 8660/8661 voltage regulator driver");
536MODULE_AUTHOR("Wolfram Sang");
537MODULE_LICENSE("GPL v2");