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527e7e9a MH |
1 | /* |
2 | * max8997.c - mfd core driver for the Maxim 8966 and 8997 | |
3 | * | |
4 | * Copyright (C) 2011 Samsung Electronics | |
5 | * MyungJoo Ham <myungjoo.ham@smasung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * This driver is based on max8998.c | |
22 | */ | |
23 | ||
24 | #include <linux/slab.h> | |
25 | #include <linux/i2c.h> | |
01fdaab8 | 26 | #include <linux/interrupt.h> |
527e7e9a | 27 | #include <linux/pm_runtime.h> |
4e36dd33 | 28 | #include <linux/module.h> |
527e7e9a MH |
29 | #include <linux/mutex.h> |
30 | #include <linux/mfd/core.h> | |
31 | #include <linux/mfd/max8997.h> | |
32 | #include <linux/mfd/max8997-private.h> | |
33 | ||
34 | #define I2C_ADDR_PMIC (0xCC >> 1) | |
35 | #define I2C_ADDR_MUIC (0x4A >> 1) | |
36 | #define I2C_ADDR_BATTERY (0x6C >> 1) | |
37 | #define I2C_ADDR_RTC (0x0C >> 1) | |
38 | #define I2C_ADDR_HAPTIC (0x90 >> 1) | |
39 | ||
40 | static struct mfd_cell max8997_devs[] = { | |
41 | { .name = "max8997-pmic", }, | |
42 | { .name = "max8997-rtc", }, | |
43 | { .name = "max8997-battery", }, | |
44 | { .name = "max8997-haptic", }, | |
45 | { .name = "max8997-muic", }, | |
f6dd2db9 DK |
46 | { .name = "max8997-led", .id = 1 }, |
47 | { .name = "max8997-led", .id = 2 }, | |
527e7e9a MH |
48 | }; |
49 | ||
50 | int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest) | |
51 | { | |
52 | struct max8997_dev *max8997 = i2c_get_clientdata(i2c); | |
53 | int ret; | |
54 | ||
55 | mutex_lock(&max8997->iolock); | |
56 | ret = i2c_smbus_read_byte_data(i2c, reg); | |
57 | mutex_unlock(&max8997->iolock); | |
58 | if (ret < 0) | |
59 | return ret; | |
60 | ||
61 | ret &= 0xff; | |
62 | *dest = ret; | |
63 | return 0; | |
64 | } | |
65 | EXPORT_SYMBOL_GPL(max8997_read_reg); | |
66 | ||
67 | int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf) | |
68 | { | |
69 | struct max8997_dev *max8997 = i2c_get_clientdata(i2c); | |
70 | int ret; | |
71 | ||
72 | mutex_lock(&max8997->iolock); | |
73 | ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf); | |
74 | mutex_unlock(&max8997->iolock); | |
75 | if (ret < 0) | |
76 | return ret; | |
77 | ||
78 | return 0; | |
79 | } | |
80 | EXPORT_SYMBOL_GPL(max8997_bulk_read); | |
81 | ||
82 | int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value) | |
83 | { | |
84 | struct max8997_dev *max8997 = i2c_get_clientdata(i2c); | |
85 | int ret; | |
86 | ||
87 | mutex_lock(&max8997->iolock); | |
88 | ret = i2c_smbus_write_byte_data(i2c, reg, value); | |
89 | mutex_unlock(&max8997->iolock); | |
90 | return ret; | |
91 | } | |
92 | EXPORT_SYMBOL_GPL(max8997_write_reg); | |
93 | ||
94 | int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf) | |
95 | { | |
96 | struct max8997_dev *max8997 = i2c_get_clientdata(i2c); | |
97 | int ret; | |
98 | ||
99 | mutex_lock(&max8997->iolock); | |
100 | ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf); | |
101 | mutex_unlock(&max8997->iolock); | |
102 | if (ret < 0) | |
103 | return ret; | |
104 | ||
105 | return 0; | |
106 | } | |
107 | EXPORT_SYMBOL_GPL(max8997_bulk_write); | |
108 | ||
109 | int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask) | |
110 | { | |
111 | struct max8997_dev *max8997 = i2c_get_clientdata(i2c); | |
112 | int ret; | |
113 | ||
114 | mutex_lock(&max8997->iolock); | |
115 | ret = i2c_smbus_read_byte_data(i2c, reg); | |
116 | if (ret >= 0) { | |
117 | u8 old_val = ret & 0xff; | |
118 | u8 new_val = (val & mask) | (old_val & (~mask)); | |
119 | ret = i2c_smbus_write_byte_data(i2c, reg, new_val); | |
120 | } | |
121 | mutex_unlock(&max8997->iolock); | |
122 | return ret; | |
123 | } | |
124 | EXPORT_SYMBOL_GPL(max8997_update_reg); | |
125 | ||
126 | static int max8997_i2c_probe(struct i2c_client *i2c, | |
127 | const struct i2c_device_id *id) | |
128 | { | |
129 | struct max8997_dev *max8997; | |
130 | struct max8997_platform_data *pdata = i2c->dev.platform_data; | |
131 | int ret = 0; | |
132 | ||
133 | max8997 = kzalloc(sizeof(struct max8997_dev), GFP_KERNEL); | |
134 | if (max8997 == NULL) | |
135 | return -ENOMEM; | |
136 | ||
137 | i2c_set_clientdata(i2c, max8997); | |
138 | max8997->dev = &i2c->dev; | |
139 | max8997->i2c = i2c; | |
140 | max8997->type = id->driver_data; | |
7eb3154e | 141 | max8997->irq = i2c->irq; |
527e7e9a MH |
142 | |
143 | if (!pdata) | |
144 | goto err; | |
145 | ||
7eb3154e | 146 | max8997->ono = pdata->ono; |
527e7e9a MH |
147 | |
148 | mutex_init(&max8997->iolock); | |
149 | ||
150 | max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC); | |
151 | i2c_set_clientdata(max8997->rtc, max8997); | |
152 | max8997->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC); | |
153 | i2c_set_clientdata(max8997->haptic, max8997); | |
154 | max8997->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC); | |
155 | i2c_set_clientdata(max8997->muic, max8997); | |
156 | ||
157 | pm_runtime_set_active(max8997->dev); | |
158 | ||
7eb3154e MH |
159 | max8997_irq_init(max8997); |
160 | ||
527e7e9a MH |
161 | mfd_add_devices(max8997->dev, -1, max8997_devs, |
162 | ARRAY_SIZE(max8997_devs), | |
0848c94f | 163 | NULL, 0, NULL); |
527e7e9a MH |
164 | |
165 | /* | |
166 | * TODO: enable others (flash, muic, rtc, battery, ...) and | |
167 | * check the return value | |
168 | */ | |
169 | ||
170 | if (ret < 0) | |
171 | goto err_mfd; | |
172 | ||
01fdaab8 MH |
173 | /* MAX8997 has a power button input. */ |
174 | device_init_wakeup(max8997->dev, pdata->wakeup); | |
175 | ||
527e7e9a MH |
176 | return ret; |
177 | ||
178 | err_mfd: | |
179 | mfd_remove_devices(max8997->dev); | |
180 | i2c_unregister_device(max8997->muic); | |
181 | i2c_unregister_device(max8997->haptic); | |
182 | i2c_unregister_device(max8997->rtc); | |
183 | err: | |
184 | kfree(max8997); | |
185 | return ret; | |
186 | } | |
187 | ||
188 | static int max8997_i2c_remove(struct i2c_client *i2c) | |
189 | { | |
190 | struct max8997_dev *max8997 = i2c_get_clientdata(i2c); | |
191 | ||
192 | mfd_remove_devices(max8997->dev); | |
193 | i2c_unregister_device(max8997->muic); | |
194 | i2c_unregister_device(max8997->haptic); | |
195 | i2c_unregister_device(max8997->rtc); | |
196 | kfree(max8997); | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | static const struct i2c_device_id max8997_i2c_id[] = { | |
202 | { "max8997", TYPE_MAX8997 }, | |
203 | { "max8966", TYPE_MAX8966 }, | |
204 | { } | |
205 | }; | |
206 | MODULE_DEVICE_TABLE(i2c, max8998_i2c_id); | |
207 | ||
b673e24c | 208 | static u8 max8997_dumpaddr_pmic[] = { |
527e7e9a MH |
209 | MAX8997_REG_INT1MSK, |
210 | MAX8997_REG_INT2MSK, | |
211 | MAX8997_REG_INT3MSK, | |
212 | MAX8997_REG_INT4MSK, | |
213 | MAX8997_REG_MAINCON1, | |
214 | MAX8997_REG_MAINCON2, | |
215 | MAX8997_REG_BUCKRAMP, | |
216 | MAX8997_REG_BUCK1CTRL, | |
217 | MAX8997_REG_BUCK1DVS1, | |
218 | MAX8997_REG_BUCK1DVS2, | |
219 | MAX8997_REG_BUCK1DVS3, | |
220 | MAX8997_REG_BUCK1DVS4, | |
221 | MAX8997_REG_BUCK1DVS5, | |
222 | MAX8997_REG_BUCK1DVS6, | |
223 | MAX8997_REG_BUCK1DVS7, | |
224 | MAX8997_REG_BUCK1DVS8, | |
225 | MAX8997_REG_BUCK2CTRL, | |
226 | MAX8997_REG_BUCK2DVS1, | |
227 | MAX8997_REG_BUCK2DVS2, | |
228 | MAX8997_REG_BUCK2DVS3, | |
229 | MAX8997_REG_BUCK2DVS4, | |
230 | MAX8997_REG_BUCK2DVS5, | |
231 | MAX8997_REG_BUCK2DVS6, | |
232 | MAX8997_REG_BUCK2DVS7, | |
233 | MAX8997_REG_BUCK2DVS8, | |
234 | MAX8997_REG_BUCK3CTRL, | |
235 | MAX8997_REG_BUCK3DVS, | |
236 | MAX8997_REG_BUCK4CTRL, | |
237 | MAX8997_REG_BUCK4DVS, | |
238 | MAX8997_REG_BUCK5CTRL, | |
239 | MAX8997_REG_BUCK5DVS1, | |
240 | MAX8997_REG_BUCK5DVS2, | |
241 | MAX8997_REG_BUCK5DVS3, | |
242 | MAX8997_REG_BUCK5DVS4, | |
243 | MAX8997_REG_BUCK5DVS5, | |
244 | MAX8997_REG_BUCK5DVS6, | |
245 | MAX8997_REG_BUCK5DVS7, | |
246 | MAX8997_REG_BUCK5DVS8, | |
247 | MAX8997_REG_BUCK6CTRL, | |
248 | MAX8997_REG_BUCK6BPSKIPCTRL, | |
249 | MAX8997_REG_BUCK7CTRL, | |
250 | MAX8997_REG_BUCK7DVS, | |
251 | MAX8997_REG_LDO1CTRL, | |
252 | MAX8997_REG_LDO2CTRL, | |
253 | MAX8997_REG_LDO3CTRL, | |
254 | MAX8997_REG_LDO4CTRL, | |
255 | MAX8997_REG_LDO5CTRL, | |
256 | MAX8997_REG_LDO6CTRL, | |
257 | MAX8997_REG_LDO7CTRL, | |
258 | MAX8997_REG_LDO8CTRL, | |
259 | MAX8997_REG_LDO9CTRL, | |
260 | MAX8997_REG_LDO10CTRL, | |
261 | MAX8997_REG_LDO11CTRL, | |
262 | MAX8997_REG_LDO12CTRL, | |
263 | MAX8997_REG_LDO13CTRL, | |
264 | MAX8997_REG_LDO14CTRL, | |
265 | MAX8997_REG_LDO15CTRL, | |
266 | MAX8997_REG_LDO16CTRL, | |
267 | MAX8997_REG_LDO17CTRL, | |
268 | MAX8997_REG_LDO18CTRL, | |
269 | MAX8997_REG_LDO21CTRL, | |
270 | MAX8997_REG_MBCCTRL1, | |
271 | MAX8997_REG_MBCCTRL2, | |
272 | MAX8997_REG_MBCCTRL3, | |
273 | MAX8997_REG_MBCCTRL4, | |
274 | MAX8997_REG_MBCCTRL5, | |
275 | MAX8997_REG_MBCCTRL6, | |
276 | MAX8997_REG_OTPCGHCVS, | |
277 | MAX8997_REG_SAFEOUTCTRL, | |
278 | MAX8997_REG_LBCNFG1, | |
279 | MAX8997_REG_LBCNFG2, | |
280 | MAX8997_REG_BBCCTRL, | |
281 | ||
282 | MAX8997_REG_FLASH1_CUR, | |
283 | MAX8997_REG_FLASH2_CUR, | |
284 | MAX8997_REG_MOVIE_CUR, | |
285 | MAX8997_REG_GSMB_CUR, | |
286 | MAX8997_REG_BOOST_CNTL, | |
287 | MAX8997_REG_LEN_CNTL, | |
288 | MAX8997_REG_FLASH_CNTL, | |
289 | MAX8997_REG_WDT_CNTL, | |
290 | MAX8997_REG_MAXFLASH1, | |
291 | MAX8997_REG_MAXFLASH2, | |
292 | MAX8997_REG_FLASHSTATUSMASK, | |
293 | ||
294 | MAX8997_REG_GPIOCNTL1, | |
295 | MAX8997_REG_GPIOCNTL2, | |
296 | MAX8997_REG_GPIOCNTL3, | |
297 | MAX8997_REG_GPIOCNTL4, | |
298 | MAX8997_REG_GPIOCNTL5, | |
299 | MAX8997_REG_GPIOCNTL6, | |
300 | MAX8997_REG_GPIOCNTL7, | |
301 | MAX8997_REG_GPIOCNTL8, | |
302 | MAX8997_REG_GPIOCNTL9, | |
303 | MAX8997_REG_GPIOCNTL10, | |
304 | MAX8997_REG_GPIOCNTL11, | |
305 | MAX8997_REG_GPIOCNTL12, | |
306 | ||
307 | MAX8997_REG_LDO1CONFIG, | |
308 | MAX8997_REG_LDO2CONFIG, | |
309 | MAX8997_REG_LDO3CONFIG, | |
310 | MAX8997_REG_LDO4CONFIG, | |
311 | MAX8997_REG_LDO5CONFIG, | |
312 | MAX8997_REG_LDO6CONFIG, | |
313 | MAX8997_REG_LDO7CONFIG, | |
314 | MAX8997_REG_LDO8CONFIG, | |
315 | MAX8997_REG_LDO9CONFIG, | |
316 | MAX8997_REG_LDO10CONFIG, | |
317 | MAX8997_REG_LDO11CONFIG, | |
318 | MAX8997_REG_LDO12CONFIG, | |
319 | MAX8997_REG_LDO13CONFIG, | |
320 | MAX8997_REG_LDO14CONFIG, | |
321 | MAX8997_REG_LDO15CONFIG, | |
322 | MAX8997_REG_LDO16CONFIG, | |
323 | MAX8997_REG_LDO17CONFIG, | |
324 | MAX8997_REG_LDO18CONFIG, | |
325 | MAX8997_REG_LDO21CONFIG, | |
326 | ||
327 | MAX8997_REG_DVSOKTIMER1, | |
328 | MAX8997_REG_DVSOKTIMER2, | |
329 | MAX8997_REG_DVSOKTIMER4, | |
330 | MAX8997_REG_DVSOKTIMER5, | |
331 | }; | |
332 | ||
b673e24c | 333 | static u8 max8997_dumpaddr_muic[] = { |
527e7e9a MH |
334 | MAX8997_MUIC_REG_INTMASK1, |
335 | MAX8997_MUIC_REG_INTMASK2, | |
336 | MAX8997_MUIC_REG_INTMASK3, | |
337 | MAX8997_MUIC_REG_CDETCTRL, | |
338 | MAX8997_MUIC_REG_CONTROL1, | |
339 | MAX8997_MUIC_REG_CONTROL2, | |
340 | MAX8997_MUIC_REG_CONTROL3, | |
341 | }; | |
342 | ||
b673e24c | 343 | static u8 max8997_dumpaddr_haptic[] = { |
527e7e9a MH |
344 | MAX8997_HAPTIC_REG_CONF1, |
345 | MAX8997_HAPTIC_REG_CONF2, | |
346 | MAX8997_HAPTIC_REG_DRVCONF, | |
347 | MAX8997_HAPTIC_REG_CYCLECONF1, | |
348 | MAX8997_HAPTIC_REG_CYCLECONF2, | |
349 | MAX8997_HAPTIC_REG_SIGCONF1, | |
350 | MAX8997_HAPTIC_REG_SIGCONF2, | |
351 | MAX8997_HAPTIC_REG_SIGCONF3, | |
352 | MAX8997_HAPTIC_REG_SIGCONF4, | |
353 | MAX8997_HAPTIC_REG_SIGDC1, | |
354 | MAX8997_HAPTIC_REG_SIGDC2, | |
355 | MAX8997_HAPTIC_REG_SIGPWMDC1, | |
356 | MAX8997_HAPTIC_REG_SIGPWMDC2, | |
357 | MAX8997_HAPTIC_REG_SIGPWMDC3, | |
358 | MAX8997_HAPTIC_REG_SIGPWMDC4, | |
359 | }; | |
360 | ||
361 | static int max8997_freeze(struct device *dev) | |
362 | { | |
363 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
364 | struct max8997_dev *max8997 = i2c_get_clientdata(i2c); | |
365 | int i; | |
366 | ||
367 | for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++) | |
368 | max8997_read_reg(i2c, max8997_dumpaddr_pmic[i], | |
369 | &max8997->reg_dump[i]); | |
370 | ||
371 | for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++) | |
372 | max8997_read_reg(i2c, max8997_dumpaddr_muic[i], | |
373 | &max8997->reg_dump[i + MAX8997_REG_PMIC_END]); | |
374 | ||
375 | for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++) | |
376 | max8997_read_reg(i2c, max8997_dumpaddr_haptic[i], | |
377 | &max8997->reg_dump[i + MAX8997_REG_PMIC_END + | |
378 | MAX8997_MUIC_REG_END]); | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
383 | static int max8997_restore(struct device *dev) | |
384 | { | |
385 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
386 | struct max8997_dev *max8997 = i2c_get_clientdata(i2c); | |
387 | int i; | |
388 | ||
389 | for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++) | |
390 | max8997_write_reg(i2c, max8997_dumpaddr_pmic[i], | |
391 | max8997->reg_dump[i]); | |
392 | ||
393 | for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++) | |
394 | max8997_write_reg(i2c, max8997_dumpaddr_muic[i], | |
395 | max8997->reg_dump[i + MAX8997_REG_PMIC_END]); | |
396 | ||
397 | for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++) | |
398 | max8997_write_reg(i2c, max8997_dumpaddr_haptic[i], | |
399 | max8997->reg_dump[i + MAX8997_REG_PMIC_END + | |
400 | MAX8997_MUIC_REG_END]); | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
01fdaab8 MH |
405 | static int max8997_suspend(struct device *dev) |
406 | { | |
407 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
408 | struct max8997_dev *max8997 = i2c_get_clientdata(i2c); | |
409 | ||
410 | if (device_may_wakeup(dev)) | |
411 | irq_set_irq_wake(max8997->irq, 1); | |
412 | return 0; | |
413 | } | |
414 | ||
415 | static int max8997_resume(struct device *dev) | |
416 | { | |
417 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
418 | struct max8997_dev *max8997 = i2c_get_clientdata(i2c); | |
419 | ||
420 | if (device_may_wakeup(dev)) | |
421 | irq_set_irq_wake(max8997->irq, 0); | |
422 | return max8997_irq_resume(max8997); | |
423 | } | |
424 | ||
b673e24c | 425 | static const struct dev_pm_ops max8997_pm = { |
01fdaab8 MH |
426 | .suspend = max8997_suspend, |
427 | .resume = max8997_resume, | |
527e7e9a MH |
428 | .freeze = max8997_freeze, |
429 | .restore = max8997_restore, | |
430 | }; | |
431 | ||
432 | static struct i2c_driver max8997_i2c_driver = { | |
433 | .driver = { | |
434 | .name = "max8997", | |
435 | .owner = THIS_MODULE, | |
436 | .pm = &max8997_pm, | |
437 | }, | |
438 | .probe = max8997_i2c_probe, | |
439 | .remove = max8997_i2c_remove, | |
440 | .id_table = max8997_i2c_id, | |
441 | }; | |
442 | ||
443 | static int __init max8997_i2c_init(void) | |
444 | { | |
445 | return i2c_add_driver(&max8997_i2c_driver); | |
446 | } | |
447 | /* init early so consumer devices can complete system boot */ | |
448 | subsys_initcall(max8997_i2c_init); | |
449 | ||
450 | static void __exit max8997_i2c_exit(void) | |
451 | { | |
452 | i2c_del_driver(&max8997_i2c_driver); | |
453 | } | |
454 | module_exit(max8997_i2c_exit); | |
455 | ||
456 | MODULE_DESCRIPTION("MAXIM 8997 multi-function core driver"); | |
457 | MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>"); | |
458 | MODULE_LICENSE("GPL"); |