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24#include <linux/slab.h>
25#include <linux/i2c.h>
26#include <linux/interrupt.h>
27#include <linux/pm_runtime.h>
28#include <linux/module.h>
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
40static 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", },
46 { .name = "max8997-flash", },
47};
48
49int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
50{
51 struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
52 int ret;
53
54 mutex_lock(&max8997->iolock);
55 ret = i2c_smbus_read_byte_data(i2c, reg);
56 mutex_unlock(&max8997->iolock);
57 if (ret < 0)
58 return ret;
59
60 ret &= 0xff;
61 *dest = ret;
62 return 0;
63}
64EXPORT_SYMBOL_GPL(max8997_read_reg);
65
66int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
67{
68 struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
69 int ret;
70
71 mutex_lock(&max8997->iolock);
72 ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
73 mutex_unlock(&max8997->iolock);
74 if (ret < 0)
75 return ret;
76
77 return 0;
78}
79EXPORT_SYMBOL_GPL(max8997_bulk_read);
80
81int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
82{
83 struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
84 int ret;
85
86 mutex_lock(&max8997->iolock);
87 ret = i2c_smbus_write_byte_data(i2c, reg, value);
88 mutex_unlock(&max8997->iolock);
89 return ret;
90}
91EXPORT_SYMBOL_GPL(max8997_write_reg);
92
93int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
94{
95 struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
96 int ret;
97
98 mutex_lock(&max8997->iolock);
99 ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
100 mutex_unlock(&max8997->iolock);
101 if (ret < 0)
102 return ret;
103
104 return 0;
105}
106EXPORT_SYMBOL_GPL(max8997_bulk_write);
107
108int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
109{
110 struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
111 int ret;
112
113 mutex_lock(&max8997->iolock);
114 ret = i2c_smbus_read_byte_data(i2c, reg);
115 if (ret >= 0) {
116 u8 old_val = ret & 0xff;
117 u8 new_val = (val & mask) | (old_val & (~mask));
118 ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
119 }
120 mutex_unlock(&max8997->iolock);
121 return ret;
122}
123EXPORT_SYMBOL_GPL(max8997_update_reg);
124
125static int max8997_i2c_probe(struct i2c_client *i2c,
126 const struct i2c_device_id *id)
127{
128 struct max8997_dev *max8997;
129 struct max8997_platform_data *pdata = i2c->dev.platform_data;
130 int ret = 0;
131
132 max8997 = kzalloc(sizeof(struct max8997_dev), GFP_KERNEL);
133 if (max8997 == NULL)
134 return -ENOMEM;
135
136 i2c_set_clientdata(i2c, max8997);
137 max8997->dev = &i2c->dev;
138 max8997->i2c = i2c;
139 max8997->type = id->driver_data;
140 max8997->irq = i2c->irq;
141
142 if (!pdata)
143 goto err;
144
145 max8997->irq_base = pdata->irq_base;
146 max8997->ono = pdata->ono;
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
159 max8997_irq_init(max8997);
160
161 mfd_add_devices(max8997->dev, -1, max8997_devs,
162 ARRAY_SIZE(max8997_devs),
163 NULL, 0);
164
165
166
167
168
169
170 if (ret < 0)
171 goto err_mfd;
172
173
174 device_init_wakeup(max8997->dev, pdata->wakeup);
175
176 return ret;
177
178err_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);
183err:
184 kfree(max8997);
185 return ret;
186}
187
188static 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
201static const struct i2c_device_id max8997_i2c_id[] = {
202 { "max8997", TYPE_MAX8997 },
203 { "max8966", TYPE_MAX8966 },
204 { }
205};
206MODULE_DEVICE_TABLE(i2c, max8998_i2c_id);
207
208u8 max8997_dumpaddr_pmic[] = {
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
333u8 max8997_dumpaddr_muic[] = {
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
343u8 max8997_dumpaddr_haptic[] = {
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
361static 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
383static 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
405static 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
415static 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
425const struct dev_pm_ops max8997_pm = {
426 .suspend = max8997_suspend,
427 .resume = max8997_resume,
428 .freeze = max8997_freeze,
429 .restore = max8997_restore,
430};
431
432static 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
443static int __init max8997_i2c_init(void)
444{
445 return i2c_add_driver(&max8997_i2c_driver);
446}
447
448subsys_initcall(max8997_i2c_init);
449
450static void __exit max8997_i2c_exit(void)
451{
452 i2c_del_driver(&max8997_i2c_driver);
453}
454module_exit(max8997_i2c_exit);
455
456MODULE_DESCRIPTION("MAXIM 8997 multi-function core driver");
457MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
458MODULE_LICENSE("GPL");
459
