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> |
00e2573d | 31 | #include <linux/mfd/samsung/s2mpu02.h> |
25f311fa MB |
32 | #include <linux/mfd/samsung/s5m8763.h> |
33 | #include <linux/mfd/samsung/s5m8767.h> | |
b7cde707 | 34 | #include <linux/regulator/machine.h> |
0f5f7078 SK |
35 | #include <linux/regmap.h> |
36 | ||
5ac98553 | 37 | static const struct mfd_cell s5m8751_devs[] = { |
88a1cfd6 SK |
38 | { |
39 | .name = "s5m8751-pmic", | |
40 | }, { | |
41 | .name = "s5m-charger", | |
42 | }, { | |
43 | .name = "s5m8751-codec", | |
44 | }, | |
45 | }; | |
46 | ||
5ac98553 | 47 | static const struct mfd_cell s5m8763_devs[] = { |
88a1cfd6 SK |
48 | { |
49 | .name = "s5m8763-pmic", | |
50 | }, { | |
51 | .name = "s5m-rtc", | |
52 | }, { | |
53 | .name = "s5m-charger", | |
54 | }, | |
55 | }; | |
56 | ||
5ac98553 | 57 | static const struct mfd_cell s5m8767_devs[] = { |
0f5f7078 SK |
58 | { |
59 | .name = "s5m8767-pmic", | |
60 | }, { | |
61 | .name = "s5m-rtc", | |
39fed00f TB |
62 | }, { |
63 | .name = "s5m8767-clk", | |
53c31b34 | 64 | .of_compatible = "samsung,s5m8767-clk", |
39fed00f | 65 | } |
0f5f7078 SK |
66 | }; |
67 | ||
5ac98553 | 68 | static const struct mfd_cell s2mps11_devs[] = { |
9b6d1343 SK |
69 | { |
70 | .name = "s2mps11-pmic", | |
3134bcae YSB |
71 | }, { |
72 | .name = "s2mps11-clk", | |
53c31b34 | 73 | .of_compatible = "samsung,s2mps11-clk", |
3134bcae | 74 | } |
9b6d1343 SK |
75 | }; |
76 | ||
dc691966 KK |
77 | static const struct mfd_cell s2mps14_devs[] = { |
78 | { | |
79 | .name = "s2mps14-pmic", | |
80 | }, { | |
81 | .name = "s2mps14-rtc", | |
82 | }, { | |
83 | .name = "s2mps14-clk", | |
53c31b34 | 84 | .of_compatible = "samsung,s2mps14-clk", |
dc691966 KK |
85 | } |
86 | }; | |
87 | ||
ce24991e SK |
88 | static const struct mfd_cell s2mpa01_devs[] = { |
89 | { | |
90 | .name = "s2mpa01-pmic", | |
91 | }, | |
92 | }; | |
93 | ||
54e8827d CC |
94 | static const struct mfd_cell s2mpu02_devs[] = { |
95 | { .name = "s2mpu02-pmic", }, | |
96 | { .name = "s2mpu02-rtc", }, | |
97 | { | |
98 | .name = "s2mpu02-clk", | |
99 | .of_compatible = "samsung,s2mpu02-clk", | |
100 | } | |
101 | }; | |
102 | ||
26aec009 | 103 | #ifdef CONFIG_OF |
df20b7c5 | 104 | static const struct of_device_id sec_dt_match[] = { |
26aec009 ADK |
105 | { .compatible = "samsung,s5m8767-pmic", |
106 | .data = (void *)S5M8767X, | |
ce24991e SK |
107 | }, { |
108 | .compatible = "samsung,s2mps11-pmic", | |
aa32acad | 109 | .data = (void *)S2MPS11X, |
ce24991e SK |
110 | }, { |
111 | .compatible = "samsung,s2mps14-pmic", | |
dc691966 | 112 | .data = (void *)S2MPS14X, |
ce24991e SK |
113 | }, { |
114 | .compatible = "samsung,s2mpa01-pmic", | |
115 | .data = (void *)S2MPA01, | |
54e8827d CC |
116 | }, { |
117 | .compatible = "samsung,s2mpu02-pmic", | |
118 | .data = (void *)S2MPU02, | |
ce24991e SK |
119 | }, { |
120 | /* Sentinel */ | |
dc691966 | 121 | }, |
26aec009 ADK |
122 | }; |
123 | #endif | |
124 | ||
ce24991e SK |
125 | static bool s2mpa01_volatile(struct device *dev, unsigned int reg) |
126 | { | |
127 | switch (reg) { | |
128 | case S2MPA01_REG_INT1M: | |
129 | case S2MPA01_REG_INT2M: | |
130 | case S2MPA01_REG_INT3M: | |
131 | return false; | |
132 | default: | |
133 | return true; | |
134 | } | |
135 | } | |
136 | ||
6b845ba9 MB |
137 | static bool s2mps11_volatile(struct device *dev, unsigned int reg) |
138 | { | |
139 | switch (reg) { | |
140 | case S2MPS11_REG_INT1M: | |
141 | case S2MPS11_REG_INT2M: | |
142 | case S2MPS11_REG_INT3M: | |
143 | return false; | |
144 | default: | |
145 | return true; | |
146 | } | |
147 | } | |
148 | ||
00e2573d CC |
149 | static bool s2mpu02_volatile(struct device *dev, unsigned int reg) |
150 | { | |
151 | switch (reg) { | |
152 | case S2MPU02_REG_INT1M: | |
153 | case S2MPU02_REG_INT2M: | |
154 | case S2MPU02_REG_INT3M: | |
155 | return false; | |
156 | default: | |
157 | return true; | |
158 | } | |
159 | } | |
160 | ||
6b845ba9 MB |
161 | static bool s5m8763_volatile(struct device *dev, unsigned int reg) |
162 | { | |
163 | switch (reg) { | |
164 | case S5M8763_REG_IRQM1: | |
165 | case S5M8763_REG_IRQM2: | |
166 | case S5M8763_REG_IRQM3: | |
167 | case S5M8763_REG_IRQM4: | |
168 | return false; | |
169 | default: | |
170 | return true; | |
171 | } | |
172 | } | |
173 | ||
a30fffb0 | 174 | static const struct regmap_config sec_regmap_config = { |
0f5f7078 SK |
175 | .reg_bits = 8, |
176 | .val_bits = 8, | |
177 | }; | |
178 | ||
ce24991e SK |
179 | static const struct regmap_config s2mpa01_regmap_config = { |
180 | .reg_bits = 8, | |
181 | .val_bits = 8, | |
182 | ||
183 | .max_register = S2MPA01_REG_LDO_OVCB4, | |
184 | .volatile_reg = s2mpa01_volatile, | |
185 | .cache_type = REGCACHE_FLAT, | |
186 | }; | |
187 | ||
a30fffb0 | 188 | static const struct regmap_config s2mps11_regmap_config = { |
25f311fa MB |
189 | .reg_bits = 8, |
190 | .val_bits = 8, | |
191 | ||
192 | .max_register = S2MPS11_REG_L38CTRL, | |
6b845ba9 MB |
193 | .volatile_reg = s2mps11_volatile, |
194 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
195 | }; |
196 | ||
dc691966 KK |
197 | static const struct regmap_config s2mps14_regmap_config = { |
198 | .reg_bits = 8, | |
199 | .val_bits = 8, | |
200 | ||
201 | .max_register = S2MPS14_REG_LDODSCH3, | |
202 | .volatile_reg = s2mps11_volatile, | |
203 | .cache_type = REGCACHE_FLAT, | |
204 | }; | |
205 | ||
00e2573d CC |
206 | static const struct regmap_config s2mpu02_regmap_config = { |
207 | .reg_bits = 8, | |
208 | .val_bits = 8, | |
209 | ||
210 | .max_register = S2MPU02_REG_DVSDATA, | |
211 | .volatile_reg = s2mpu02_volatile, | |
212 | .cache_type = REGCACHE_FLAT, | |
213 | }; | |
214 | ||
a30fffb0 | 215 | static const struct regmap_config s5m8763_regmap_config = { |
25f311fa MB |
216 | .reg_bits = 8, |
217 | .val_bits = 8, | |
218 | ||
219 | .max_register = S5M8763_REG_LBCNFG2, | |
6b845ba9 MB |
220 | .volatile_reg = s5m8763_volatile, |
221 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
222 | }; |
223 | ||
a30fffb0 | 224 | static const struct regmap_config s5m8767_regmap_config = { |
25f311fa MB |
225 | .reg_bits = 8, |
226 | .val_bits = 8, | |
227 | ||
228 | .max_register = S5M8767_REG_LDO28CTRL, | |
6b845ba9 MB |
229 | .volatile_reg = s2mps11_volatile, |
230 | .cache_type = REGCACHE_FLAT, | |
25f311fa | 231 | }; |
26aec009 ADK |
232 | |
233 | #ifdef CONFIG_OF | |
234 | /* | |
235 | * Only the common platform data elements for s5m8767 are parsed here from the | |
236 | * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and | |
237 | * others have to parse their own platform data elements from device tree. | |
238 | * | |
239 | * The s5m8767 platform data structure is instantiated here and the drivers for | |
240 | * the sub-modules need not instantiate another instance while parsing their | |
241 | * platform data. | |
242 | */ | |
243 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( | |
244 | struct device *dev) | |
245 | { | |
246 | struct sec_platform_data *pd; | |
247 | ||
248 | pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); | |
249 | if (!pd) { | |
250 | dev_err(dev, "could not allocate memory for pdata\n"); | |
251 | return ERR_PTR(-ENOMEM); | |
252 | } | |
253 | ||
254 | /* | |
255 | * ToDo: the 'wakeup' member in the platform data is more of a linux | |
256 | * specfic information. Hence, there is no binding for that yet and | |
257 | * not parsed here. | |
258 | */ | |
259 | ||
260 | return pd; | |
261 | } | |
262 | #else | |
197bf856 | 263 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( |
26aec009 ADK |
264 | struct device *dev) |
265 | { | |
005718c0 | 266 | return NULL; |
26aec009 ADK |
267 | } |
268 | #endif | |
269 | ||
8f695de5 | 270 | static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c, |
26aec009 ADK |
271 | const struct i2c_device_id *id) |
272 | { | |
273 | #ifdef CONFIG_OF | |
274 | if (i2c->dev.of_node) { | |
275 | const struct of_device_id *match; | |
b6c1cb4d | 276 | |
26aec009 | 277 | match = of_match_node(sec_dt_match, i2c->dev.of_node); |
8f695de5 | 278 | return (unsigned long)match->data; |
26aec009 ADK |
279 | } |
280 | #endif | |
8f695de5 | 281 | return id->driver_data; |
26aec009 ADK |
282 | } |
283 | ||
63063bfb | 284 | static int sec_pmic_probe(struct i2c_client *i2c, |
0f5f7078 SK |
285 | const struct i2c_device_id *id) |
286 | { | |
334a41ce | 287 | struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev); |
e349c910 | 288 | const struct regmap_config *regmap; |
54e8827d | 289 | const struct mfd_cell *sec_devs; |
63063bfb | 290 | struct sec_pmic_dev *sec_pmic; |
9549b5ff | 291 | unsigned long device_type; |
54e8827d | 292 | int ret, num_sec_devs; |
0f5f7078 | 293 | |
63063bfb | 294 | sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), |
621210e2 | 295 | GFP_KERNEL); |
63063bfb | 296 | if (sec_pmic == NULL) |
0f5f7078 SK |
297 | return -ENOMEM; |
298 | ||
63063bfb SK |
299 | i2c_set_clientdata(i2c, sec_pmic); |
300 | sec_pmic->dev = &i2c->dev; | |
301 | sec_pmic->i2c = i2c; | |
302 | sec_pmic->irq = i2c->irq; | |
9549b5ff | 303 | device_type = sec_i2c_get_driver_data(i2c, id); |
26aec009 ADK |
304 | |
305 | if (sec_pmic->dev->of_node) { | |
306 | pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev); | |
307 | if (IS_ERR(pdata)) { | |
308 | ret = PTR_ERR(pdata); | |
309 | return ret; | |
310 | } | |
9549b5ff | 311 | pdata->device_type = device_type; |
26aec009 | 312 | } |
0f5f7078 | 313 | if (pdata) { |
63063bfb SK |
314 | sec_pmic->device_type = pdata->device_type; |
315 | sec_pmic->ono = pdata->ono; | |
316 | sec_pmic->irq_base = pdata->irq_base; | |
317 | sec_pmic->wakeup = pdata->wakeup; | |
26aec009 | 318 | sec_pmic->pdata = pdata; |
0f5f7078 SK |
319 | } |
320 | ||
25f311fa | 321 | switch (sec_pmic->device_type) { |
ce24991e SK |
322 | case S2MPA01: |
323 | regmap = &s2mpa01_regmap_config; | |
324 | break; | |
25f311fa MB |
325 | case S2MPS11X: |
326 | regmap = &s2mps11_regmap_config; | |
dc691966 KK |
327 | break; |
328 | case S2MPS14X: | |
329 | regmap = &s2mps14_regmap_config; | |
25f311fa MB |
330 | break; |
331 | case S5M8763X: | |
332 | regmap = &s5m8763_regmap_config; | |
333 | break; | |
334 | case S5M8767X: | |
335 | regmap = &s5m8767_regmap_config; | |
336 | break; | |
00e2573d CC |
337 | case S2MPU02: |
338 | regmap = &s2mpu02_regmap_config; | |
339 | break; | |
25f311fa MB |
340 | default: |
341 | regmap = &sec_regmap_config; | |
342 | break; | |
343 | } | |
344 | ||
3e1e4a5f KK |
345 | sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap); |
346 | if (IS_ERR(sec_pmic->regmap_pmic)) { | |
347 | ret = PTR_ERR(sec_pmic->regmap_pmic); | |
0f5f7078 | 348 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
61a2af30 | 349 | ret); |
1092e1c7 | 350 | return ret; |
0f5f7078 SK |
351 | } |
352 | ||
c3ebb30a | 353 | if (pdata && pdata->cfg_pmic_irq) |
0f5f7078 SK |
354 | pdata->cfg_pmic_irq(); |
355 | ||
63063bfb | 356 | sec_irq_init(sec_pmic); |
0f5f7078 | 357 | |
63063bfb | 358 | pm_runtime_set_active(sec_pmic->dev); |
0f5f7078 | 359 | |
63063bfb | 360 | switch (sec_pmic->device_type) { |
88a1cfd6 | 361 | case S5M8751X: |
54e8827d CC |
362 | sec_devs = s5m8751_devs; |
363 | num_sec_devs = ARRAY_SIZE(s5m8751_devs); | |
88a1cfd6 SK |
364 | break; |
365 | case S5M8763X: | |
54e8827d CC |
366 | sec_devs = s5m8763_devs; |
367 | num_sec_devs = ARRAY_SIZE(s5m8763_devs); | |
88a1cfd6 SK |
368 | break; |
369 | case S5M8767X: | |
54e8827d CC |
370 | sec_devs = s5m8767_devs; |
371 | num_sec_devs = ARRAY_SIZE(s5m8767_devs); | |
88a1cfd6 | 372 | break; |
ce24991e | 373 | case S2MPA01: |
54e8827d CC |
374 | sec_devs = s2mpa01_devs; |
375 | num_sec_devs = ARRAY_SIZE(s2mpa01_devs); | |
ce24991e | 376 | break; |
9b6d1343 | 377 | case S2MPS11X: |
54e8827d CC |
378 | sec_devs = s2mps11_devs; |
379 | num_sec_devs = ARRAY_SIZE(s2mps11_devs); | |
9b6d1343 | 380 | break; |
dc691966 | 381 | case S2MPS14X: |
54e8827d CC |
382 | sec_devs = s2mps14_devs; |
383 | num_sec_devs = ARRAY_SIZE(s2mps14_devs); | |
384 | break; | |
385 | case S2MPU02: | |
386 | sec_devs = s2mpu02_devs; | |
387 | num_sec_devs = ARRAY_SIZE(s2mpu02_devs); | |
dc691966 | 388 | break; |
88a1cfd6 SK |
389 | default: |
390 | /* If this happens the probe function is problem */ | |
391 | BUG(); | |
392 | } | |
54e8827d CC |
393 | ret = mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, NULL, |
394 | 0, NULL); | |
15447a46 | 395 | if (ret) |
8c66eece | 396 | goto err_mfd; |
0f5f7078 | 397 | |
f6d6daaf KK |
398 | device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup); |
399 | ||
0f5f7078 SK |
400 | return ret; |
401 | ||
8c66eece | 402 | err_mfd: |
63063bfb | 403 | sec_irq_exit(sec_pmic); |
0f5f7078 SK |
404 | return ret; |
405 | } | |
406 | ||
63063bfb | 407 | static int sec_pmic_remove(struct i2c_client *i2c) |
0f5f7078 | 408 | { |
63063bfb | 409 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
0f5f7078 | 410 | |
63063bfb SK |
411 | mfd_remove_devices(sec_pmic->dev); |
412 | sec_irq_exit(sec_pmic); | |
0f5f7078 SK |
413 | return 0; |
414 | } | |
415 | ||
8321bbf8 | 416 | #ifdef CONFIG_PM_SLEEP |
f6d6daaf KK |
417 | static int sec_pmic_suspend(struct device *dev) |
418 | { | |
419 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
420 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
421 | ||
360d15d6 | 422 | if (device_may_wakeup(dev)) |
f6d6daaf | 423 | enable_irq_wake(sec_pmic->irq); |
360d15d6 KK |
424 | /* |
425 | * PMIC IRQ must be disabled during suspend for RTC alarm | |
426 | * to work properly. | |
427 | * When device is woken up from suspend, an | |
428 | * interrupt occurs before resuming I2C bus controller. | |
429 | * The interrupt is handled by regmap_irq_thread which tries | |
430 | * to read RTC registers. This read fails (I2C is still | |
431 | * suspended) and RTC Alarm interrupt is disabled. | |
432 | */ | |
433 | disable_irq(sec_pmic->irq); | |
f6d6daaf | 434 | |
b7cde707 CC |
435 | switch (sec_pmic->device_type) { |
436 | case S2MPS14X: | |
437 | case S2MPU02: | |
438 | regulator_suspend_prepare(PM_SUSPEND_MEM); | |
439 | break; | |
440 | default: | |
441 | break; | |
442 | } | |
443 | ||
f6d6daaf KK |
444 | return 0; |
445 | } | |
446 | ||
447 | static int sec_pmic_resume(struct device *dev) | |
448 | { | |
449 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
450 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
451 | ||
360d15d6 | 452 | if (device_may_wakeup(dev)) |
f6d6daaf | 453 | disable_irq_wake(sec_pmic->irq); |
360d15d6 | 454 | enable_irq(sec_pmic->irq); |
f6d6daaf KK |
455 | |
456 | return 0; | |
457 | } | |
8321bbf8 | 458 | #endif /* CONFIG_PM_SLEEP */ |
f6d6daaf KK |
459 | |
460 | static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume); | |
461 | ||
63063bfb SK |
462 | static const struct i2c_device_id sec_pmic_id[] = { |
463 | { "sec_pmic", 0 }, | |
0f5f7078 SK |
464 | { } |
465 | }; | |
63063bfb | 466 | MODULE_DEVICE_TABLE(i2c, sec_pmic_id); |
0f5f7078 | 467 | |
63063bfb | 468 | static struct i2c_driver sec_pmic_driver = { |
0f5f7078 | 469 | .driver = { |
63063bfb | 470 | .name = "sec_pmic", |
0f5f7078 | 471 | .owner = THIS_MODULE, |
f6d6daaf | 472 | .pm = &sec_pmic_pm_ops, |
26aec009 | 473 | .of_match_table = of_match_ptr(sec_dt_match), |
0f5f7078 | 474 | }, |
63063bfb SK |
475 | .probe = sec_pmic_probe, |
476 | .remove = sec_pmic_remove, | |
477 | .id_table = sec_pmic_id, | |
0f5f7078 SK |
478 | }; |
479 | ||
63063bfb | 480 | static int __init sec_pmic_init(void) |
0f5f7078 | 481 | { |
63063bfb | 482 | return i2c_add_driver(&sec_pmic_driver); |
0f5f7078 SK |
483 | } |
484 | ||
63063bfb | 485 | subsys_initcall(sec_pmic_init); |
0f5f7078 | 486 | |
63063bfb | 487 | static void __exit sec_pmic_exit(void) |
0f5f7078 | 488 | { |
63063bfb | 489 | i2c_del_driver(&sec_pmic_driver); |
0f5f7078 | 490 | } |
63063bfb | 491 | module_exit(sec_pmic_exit); |
0f5f7078 SK |
492 | |
493 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
494 | MODULE_DESCRIPTION("Core support for the S5M MFD"); | |
495 | MODULE_LICENSE("GPL"); |