Commit | Line | Data |
---|---|---|
0f5f7078 | 1 | /* |
63063bfb | 2 | * sec-core.c |
0f5f7078 | 3 | * |
63063bfb | 4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd |
0f5f7078 SK |
5 | * http://www.samsung.com |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/moduleparam.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/err.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/i2c.h> | |
1c5a099b | 20 | #include <linux/of.h> |
26aec009 | 21 | #include <linux/of_irq.h> |
0f5f7078 SK |
22 | #include <linux/interrupt.h> |
23 | #include <linux/pm_runtime.h> | |
24 | #include <linux/mutex.h> | |
25 | #include <linux/mfd/core.h> | |
54227bcf SK |
26 | #include <linux/mfd/samsung/core.h> |
27 | #include <linux/mfd/samsung/irq.h> | |
ce24991e | 28 | #include <linux/mfd/samsung/s2mpa01.h> |
25f311fa | 29 | #include <linux/mfd/samsung/s2mps11.h> |
dc691966 | 30 | #include <linux/mfd/samsung/s2mps14.h> |
25f311fa MB |
31 | #include <linux/mfd/samsung/s5m8763.h> |
32 | #include <linux/mfd/samsung/s5m8767.h> | |
0f5f7078 SK |
33 | #include <linux/regmap.h> |
34 | ||
5ac98553 | 35 | static const struct mfd_cell s5m8751_devs[] = { |
88a1cfd6 SK |
36 | { |
37 | .name = "s5m8751-pmic", | |
38 | }, { | |
39 | .name = "s5m-charger", | |
40 | }, { | |
41 | .name = "s5m8751-codec", | |
42 | }, | |
43 | }; | |
44 | ||
5ac98553 | 45 | static const struct mfd_cell s5m8763_devs[] = { |
88a1cfd6 SK |
46 | { |
47 | .name = "s5m8763-pmic", | |
48 | }, { | |
49 | .name = "s5m-rtc", | |
50 | }, { | |
51 | .name = "s5m-charger", | |
52 | }, | |
53 | }; | |
54 | ||
5ac98553 | 55 | static const struct mfd_cell s5m8767_devs[] = { |
0f5f7078 SK |
56 | { |
57 | .name = "s5m8767-pmic", | |
58 | }, { | |
59 | .name = "s5m-rtc", | |
39fed00f TB |
60 | }, { |
61 | .name = "s5m8767-clk", | |
53c31b34 | 62 | .of_compatible = "samsung,s5m8767-clk", |
39fed00f | 63 | } |
0f5f7078 SK |
64 | }; |
65 | ||
5ac98553 | 66 | static const struct mfd_cell s2mps11_devs[] = { |
9b6d1343 SK |
67 | { |
68 | .name = "s2mps11-pmic", | |
3134bcae YSB |
69 | }, { |
70 | .name = "s2mps11-clk", | |
53c31b34 | 71 | .of_compatible = "samsung,s2mps11-clk", |
3134bcae | 72 | } |
9b6d1343 SK |
73 | }; |
74 | ||
dc691966 KK |
75 | static const struct mfd_cell s2mps14_devs[] = { |
76 | { | |
77 | .name = "s2mps14-pmic", | |
78 | }, { | |
79 | .name = "s2mps14-rtc", | |
80 | }, { | |
81 | .name = "s2mps14-clk", | |
53c31b34 | 82 | .of_compatible = "samsung,s2mps14-clk", |
dc691966 KK |
83 | } |
84 | }; | |
85 | ||
ce24991e SK |
86 | static const struct mfd_cell s2mpa01_devs[] = { |
87 | { | |
88 | .name = "s2mpa01-pmic", | |
89 | }, | |
90 | }; | |
91 | ||
54e8827d CC |
92 | static const struct mfd_cell s2mpu02_devs[] = { |
93 | { .name = "s2mpu02-pmic", }, | |
94 | { .name = "s2mpu02-rtc", }, | |
95 | { | |
96 | .name = "s2mpu02-clk", | |
97 | .of_compatible = "samsung,s2mpu02-clk", | |
98 | } | |
99 | }; | |
100 | ||
26aec009 | 101 | #ifdef CONFIG_OF |
df20b7c5 | 102 | static const struct of_device_id sec_dt_match[] = { |
26aec009 ADK |
103 | { .compatible = "samsung,s5m8767-pmic", |
104 | .data = (void *)S5M8767X, | |
ce24991e SK |
105 | }, { |
106 | .compatible = "samsung,s2mps11-pmic", | |
aa32acad | 107 | .data = (void *)S2MPS11X, |
ce24991e SK |
108 | }, { |
109 | .compatible = "samsung,s2mps14-pmic", | |
dc691966 | 110 | .data = (void *)S2MPS14X, |
ce24991e SK |
111 | }, { |
112 | .compatible = "samsung,s2mpa01-pmic", | |
113 | .data = (void *)S2MPA01, | |
54e8827d CC |
114 | }, { |
115 | .compatible = "samsung,s2mpu02-pmic", | |
116 | .data = (void *)S2MPU02, | |
ce24991e SK |
117 | }, { |
118 | /* Sentinel */ | |
dc691966 | 119 | }, |
26aec009 ADK |
120 | }; |
121 | #endif | |
122 | ||
ce24991e SK |
123 | static bool s2mpa01_volatile(struct device *dev, unsigned int reg) |
124 | { | |
125 | switch (reg) { | |
126 | case S2MPA01_REG_INT1M: | |
127 | case S2MPA01_REG_INT2M: | |
128 | case S2MPA01_REG_INT3M: | |
129 | return false; | |
130 | default: | |
131 | return true; | |
132 | } | |
133 | } | |
134 | ||
6b845ba9 MB |
135 | static bool s2mps11_volatile(struct device *dev, unsigned int reg) |
136 | { | |
137 | switch (reg) { | |
138 | case S2MPS11_REG_INT1M: | |
139 | case S2MPS11_REG_INT2M: | |
140 | case S2MPS11_REG_INT3M: | |
141 | return false; | |
142 | default: | |
143 | return true; | |
144 | } | |
145 | } | |
146 | ||
147 | static bool s5m8763_volatile(struct device *dev, unsigned int reg) | |
148 | { | |
149 | switch (reg) { | |
150 | case S5M8763_REG_IRQM1: | |
151 | case S5M8763_REG_IRQM2: | |
152 | case S5M8763_REG_IRQM3: | |
153 | case S5M8763_REG_IRQM4: | |
154 | return false; | |
155 | default: | |
156 | return true; | |
157 | } | |
158 | } | |
159 | ||
a30fffb0 | 160 | static const struct regmap_config sec_regmap_config = { |
0f5f7078 SK |
161 | .reg_bits = 8, |
162 | .val_bits = 8, | |
163 | }; | |
164 | ||
ce24991e SK |
165 | static const struct regmap_config s2mpa01_regmap_config = { |
166 | .reg_bits = 8, | |
167 | .val_bits = 8, | |
168 | ||
169 | .max_register = S2MPA01_REG_LDO_OVCB4, | |
170 | .volatile_reg = s2mpa01_volatile, | |
171 | .cache_type = REGCACHE_FLAT, | |
172 | }; | |
173 | ||
a30fffb0 | 174 | static const struct regmap_config s2mps11_regmap_config = { |
25f311fa MB |
175 | .reg_bits = 8, |
176 | .val_bits = 8, | |
177 | ||
178 | .max_register = S2MPS11_REG_L38CTRL, | |
6b845ba9 MB |
179 | .volatile_reg = s2mps11_volatile, |
180 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
181 | }; |
182 | ||
dc691966 KK |
183 | static const struct regmap_config s2mps14_regmap_config = { |
184 | .reg_bits = 8, | |
185 | .val_bits = 8, | |
186 | ||
187 | .max_register = S2MPS14_REG_LDODSCH3, | |
188 | .volatile_reg = s2mps11_volatile, | |
189 | .cache_type = REGCACHE_FLAT, | |
190 | }; | |
191 | ||
a30fffb0 | 192 | static const struct regmap_config s5m8763_regmap_config = { |
25f311fa MB |
193 | .reg_bits = 8, |
194 | .val_bits = 8, | |
195 | ||
196 | .max_register = S5M8763_REG_LBCNFG2, | |
6b845ba9 MB |
197 | .volatile_reg = s5m8763_volatile, |
198 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
199 | }; |
200 | ||
a30fffb0 | 201 | static const struct regmap_config s5m8767_regmap_config = { |
25f311fa MB |
202 | .reg_bits = 8, |
203 | .val_bits = 8, | |
204 | ||
205 | .max_register = S5M8767_REG_LDO28CTRL, | |
6b845ba9 MB |
206 | .volatile_reg = s2mps11_volatile, |
207 | .cache_type = REGCACHE_FLAT, | |
25f311fa | 208 | }; |
26aec009 ADK |
209 | |
210 | #ifdef CONFIG_OF | |
211 | /* | |
212 | * Only the common platform data elements for s5m8767 are parsed here from the | |
213 | * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and | |
214 | * others have to parse their own platform data elements from device tree. | |
215 | * | |
216 | * The s5m8767 platform data structure is instantiated here and the drivers for | |
217 | * the sub-modules need not instantiate another instance while parsing their | |
218 | * platform data. | |
219 | */ | |
220 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( | |
221 | struct device *dev) | |
222 | { | |
223 | struct sec_platform_data *pd; | |
224 | ||
225 | pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); | |
226 | if (!pd) { | |
227 | dev_err(dev, "could not allocate memory for pdata\n"); | |
228 | return ERR_PTR(-ENOMEM); | |
229 | } | |
230 | ||
231 | /* | |
232 | * ToDo: the 'wakeup' member in the platform data is more of a linux | |
233 | * specfic information. Hence, there is no binding for that yet and | |
234 | * not parsed here. | |
235 | */ | |
236 | ||
237 | return pd; | |
238 | } | |
239 | #else | |
197bf856 | 240 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( |
26aec009 ADK |
241 | struct device *dev) |
242 | { | |
005718c0 | 243 | return NULL; |
26aec009 ADK |
244 | } |
245 | #endif | |
246 | ||
8f695de5 | 247 | static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c, |
26aec009 ADK |
248 | const struct i2c_device_id *id) |
249 | { | |
250 | #ifdef CONFIG_OF | |
251 | if (i2c->dev.of_node) { | |
252 | const struct of_device_id *match; | |
253 | match = of_match_node(sec_dt_match, i2c->dev.of_node); | |
8f695de5 | 254 | return (unsigned long)match->data; |
26aec009 ADK |
255 | } |
256 | #endif | |
8f695de5 | 257 | return id->driver_data; |
26aec009 ADK |
258 | } |
259 | ||
63063bfb | 260 | static int sec_pmic_probe(struct i2c_client *i2c, |
0f5f7078 SK |
261 | const struct i2c_device_id *id) |
262 | { | |
334a41ce | 263 | struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev); |
e349c910 | 264 | const struct regmap_config *regmap; |
54e8827d | 265 | const struct mfd_cell *sec_devs; |
63063bfb | 266 | struct sec_pmic_dev *sec_pmic; |
9549b5ff | 267 | unsigned long device_type; |
54e8827d | 268 | int ret, num_sec_devs; |
0f5f7078 | 269 | |
63063bfb | 270 | sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), |
621210e2 | 271 | GFP_KERNEL); |
63063bfb | 272 | if (sec_pmic == NULL) |
0f5f7078 SK |
273 | return -ENOMEM; |
274 | ||
63063bfb SK |
275 | i2c_set_clientdata(i2c, sec_pmic); |
276 | sec_pmic->dev = &i2c->dev; | |
277 | sec_pmic->i2c = i2c; | |
278 | sec_pmic->irq = i2c->irq; | |
9549b5ff | 279 | device_type = sec_i2c_get_driver_data(i2c, id); |
26aec009 ADK |
280 | |
281 | if (sec_pmic->dev->of_node) { | |
282 | pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev); | |
283 | if (IS_ERR(pdata)) { | |
284 | ret = PTR_ERR(pdata); | |
285 | return ret; | |
286 | } | |
9549b5ff | 287 | pdata->device_type = device_type; |
26aec009 | 288 | } |
0f5f7078 | 289 | if (pdata) { |
63063bfb SK |
290 | sec_pmic->device_type = pdata->device_type; |
291 | sec_pmic->ono = pdata->ono; | |
292 | sec_pmic->irq_base = pdata->irq_base; | |
293 | sec_pmic->wakeup = pdata->wakeup; | |
26aec009 | 294 | sec_pmic->pdata = pdata; |
0f5f7078 SK |
295 | } |
296 | ||
25f311fa | 297 | switch (sec_pmic->device_type) { |
ce24991e SK |
298 | case S2MPA01: |
299 | regmap = &s2mpa01_regmap_config; | |
300 | break; | |
25f311fa MB |
301 | case S2MPS11X: |
302 | regmap = &s2mps11_regmap_config; | |
dc691966 KK |
303 | break; |
304 | case S2MPS14X: | |
305 | regmap = &s2mps14_regmap_config; | |
25f311fa MB |
306 | break; |
307 | case S5M8763X: | |
308 | regmap = &s5m8763_regmap_config; | |
309 | break; | |
310 | case S5M8767X: | |
311 | regmap = &s5m8767_regmap_config; | |
312 | break; | |
313 | default: | |
314 | regmap = &sec_regmap_config; | |
315 | break; | |
316 | } | |
317 | ||
3e1e4a5f KK |
318 | sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap); |
319 | if (IS_ERR(sec_pmic->regmap_pmic)) { | |
320 | ret = PTR_ERR(sec_pmic->regmap_pmic); | |
0f5f7078 | 321 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
61a2af30 | 322 | ret); |
1092e1c7 | 323 | return ret; |
0f5f7078 SK |
324 | } |
325 | ||
c3ebb30a | 326 | if (pdata && pdata->cfg_pmic_irq) |
0f5f7078 SK |
327 | pdata->cfg_pmic_irq(); |
328 | ||
63063bfb | 329 | sec_irq_init(sec_pmic); |
0f5f7078 | 330 | |
63063bfb | 331 | pm_runtime_set_active(sec_pmic->dev); |
0f5f7078 | 332 | |
63063bfb | 333 | switch (sec_pmic->device_type) { |
88a1cfd6 | 334 | case S5M8751X: |
54e8827d CC |
335 | sec_devs = s5m8751_devs; |
336 | num_sec_devs = ARRAY_SIZE(s5m8751_devs); | |
88a1cfd6 SK |
337 | break; |
338 | case S5M8763X: | |
54e8827d CC |
339 | sec_devs = s5m8763_devs; |
340 | num_sec_devs = ARRAY_SIZE(s5m8763_devs); | |
88a1cfd6 SK |
341 | break; |
342 | case S5M8767X: | |
54e8827d CC |
343 | sec_devs = s5m8767_devs; |
344 | num_sec_devs = ARRAY_SIZE(s5m8767_devs); | |
88a1cfd6 | 345 | break; |
ce24991e | 346 | case S2MPA01: |
54e8827d CC |
347 | sec_devs = s2mpa01_devs; |
348 | num_sec_devs = ARRAY_SIZE(s2mpa01_devs); | |
ce24991e | 349 | break; |
9b6d1343 | 350 | case S2MPS11X: |
54e8827d CC |
351 | sec_devs = s2mps11_devs; |
352 | num_sec_devs = ARRAY_SIZE(s2mps11_devs); | |
9b6d1343 | 353 | break; |
dc691966 | 354 | case S2MPS14X: |
54e8827d CC |
355 | sec_devs = s2mps14_devs; |
356 | num_sec_devs = ARRAY_SIZE(s2mps14_devs); | |
357 | break; | |
358 | case S2MPU02: | |
359 | sec_devs = s2mpu02_devs; | |
360 | num_sec_devs = ARRAY_SIZE(s2mpu02_devs); | |
dc691966 | 361 | break; |
88a1cfd6 SK |
362 | default: |
363 | /* If this happens the probe function is problem */ | |
364 | BUG(); | |
365 | } | |
54e8827d CC |
366 | ret = mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, NULL, |
367 | 0, NULL); | |
15447a46 | 368 | if (ret) |
8c66eece | 369 | goto err_mfd; |
0f5f7078 | 370 | |
f6d6daaf KK |
371 | device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup); |
372 | ||
0f5f7078 SK |
373 | return ret; |
374 | ||
8c66eece | 375 | err_mfd: |
63063bfb | 376 | sec_irq_exit(sec_pmic); |
0f5f7078 SK |
377 | return ret; |
378 | } | |
379 | ||
63063bfb | 380 | static int sec_pmic_remove(struct i2c_client *i2c) |
0f5f7078 | 381 | { |
63063bfb | 382 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
0f5f7078 | 383 | |
63063bfb SK |
384 | mfd_remove_devices(sec_pmic->dev); |
385 | sec_irq_exit(sec_pmic); | |
0f5f7078 SK |
386 | return 0; |
387 | } | |
388 | ||
8321bbf8 | 389 | #ifdef CONFIG_PM_SLEEP |
f6d6daaf KK |
390 | static int sec_pmic_suspend(struct device *dev) |
391 | { | |
392 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
393 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
394 | ||
360d15d6 | 395 | if (device_may_wakeup(dev)) |
f6d6daaf | 396 | enable_irq_wake(sec_pmic->irq); |
360d15d6 KK |
397 | /* |
398 | * PMIC IRQ must be disabled during suspend for RTC alarm | |
399 | * to work properly. | |
400 | * When device is woken up from suspend, an | |
401 | * interrupt occurs before resuming I2C bus controller. | |
402 | * The interrupt is handled by regmap_irq_thread which tries | |
403 | * to read RTC registers. This read fails (I2C is still | |
404 | * suspended) and RTC Alarm interrupt is disabled. | |
405 | */ | |
406 | disable_irq(sec_pmic->irq); | |
f6d6daaf KK |
407 | |
408 | return 0; | |
409 | } | |
410 | ||
411 | static int sec_pmic_resume(struct device *dev) | |
412 | { | |
413 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
414 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
415 | ||
360d15d6 | 416 | if (device_may_wakeup(dev)) |
f6d6daaf | 417 | disable_irq_wake(sec_pmic->irq); |
360d15d6 | 418 | enable_irq(sec_pmic->irq); |
f6d6daaf KK |
419 | |
420 | return 0; | |
421 | } | |
8321bbf8 | 422 | #endif /* CONFIG_PM_SLEEP */ |
f6d6daaf KK |
423 | |
424 | static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume); | |
425 | ||
63063bfb SK |
426 | static const struct i2c_device_id sec_pmic_id[] = { |
427 | { "sec_pmic", 0 }, | |
0f5f7078 SK |
428 | { } |
429 | }; | |
63063bfb | 430 | MODULE_DEVICE_TABLE(i2c, sec_pmic_id); |
0f5f7078 | 431 | |
63063bfb | 432 | static struct i2c_driver sec_pmic_driver = { |
0f5f7078 | 433 | .driver = { |
63063bfb | 434 | .name = "sec_pmic", |
0f5f7078 | 435 | .owner = THIS_MODULE, |
f6d6daaf | 436 | .pm = &sec_pmic_pm_ops, |
26aec009 | 437 | .of_match_table = of_match_ptr(sec_dt_match), |
0f5f7078 | 438 | }, |
63063bfb SK |
439 | .probe = sec_pmic_probe, |
440 | .remove = sec_pmic_remove, | |
441 | .id_table = sec_pmic_id, | |
0f5f7078 SK |
442 | }; |
443 | ||
63063bfb | 444 | static int __init sec_pmic_init(void) |
0f5f7078 | 445 | { |
63063bfb | 446 | return i2c_add_driver(&sec_pmic_driver); |
0f5f7078 SK |
447 | } |
448 | ||
63063bfb | 449 | subsys_initcall(sec_pmic_init); |
0f5f7078 | 450 | |
63063bfb | 451 | static void __exit sec_pmic_exit(void) |
0f5f7078 | 452 | { |
63063bfb | 453 | i2c_del_driver(&sec_pmic_driver); |
0f5f7078 | 454 | } |
63063bfb | 455 | module_exit(sec_pmic_exit); |
0f5f7078 SK |
456 | |
457 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
458 | MODULE_DESCRIPTION("Core support for the S5M MFD"); | |
459 | MODULE_LICENSE("GPL"); |