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> | |
28 | #include <linux/mfd/samsung/rtc.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", | |
62 | } | |
0f5f7078 SK |
63 | }; |
64 | ||
5ac98553 | 65 | static const struct mfd_cell s2mps11_devs[] = { |
9b6d1343 SK |
66 | { |
67 | .name = "s2mps11-pmic", | |
3134bcae YSB |
68 | }, { |
69 | .name = "s2mps11-clk", | |
70 | } | |
9b6d1343 SK |
71 | }; |
72 | ||
dc691966 KK |
73 | static const struct mfd_cell s2mps14_devs[] = { |
74 | { | |
75 | .name = "s2mps14-pmic", | |
76 | }, { | |
77 | .name = "s2mps14-rtc", | |
78 | }, { | |
79 | .name = "s2mps14-clk", | |
80 | } | |
81 | }; | |
82 | ||
26aec009 ADK |
83 | #ifdef CONFIG_OF |
84 | static struct of_device_id sec_dt_match[] = { | |
85 | { .compatible = "samsung,s5m8767-pmic", | |
86 | .data = (void *)S5M8767X, | |
87 | }, | |
aa32acad YSB |
88 | { .compatible = "samsung,s2mps11-pmic", |
89 | .data = (void *)S2MPS11X, | |
90 | }, | |
dc691966 KK |
91 | { .compatible = "samsung,s2mps14-pmic", |
92 | .data = (void *)S2MPS14X, | |
93 | }, | |
26aec009 ADK |
94 | {}, |
95 | }; | |
96 | #endif | |
97 | ||
6b845ba9 MB |
98 | static bool s2mps11_volatile(struct device *dev, unsigned int reg) |
99 | { | |
100 | switch (reg) { | |
101 | case S2MPS11_REG_INT1M: | |
102 | case S2MPS11_REG_INT2M: | |
103 | case S2MPS11_REG_INT3M: | |
104 | return false; | |
105 | default: | |
106 | return true; | |
107 | } | |
108 | } | |
109 | ||
110 | static bool s5m8763_volatile(struct device *dev, unsigned int reg) | |
111 | { | |
112 | switch (reg) { | |
113 | case S5M8763_REG_IRQM1: | |
114 | case S5M8763_REG_IRQM2: | |
115 | case S5M8763_REG_IRQM3: | |
116 | case S5M8763_REG_IRQM4: | |
117 | return false; | |
118 | default: | |
119 | return true; | |
120 | } | |
121 | } | |
122 | ||
a30fffb0 | 123 | static const struct regmap_config sec_regmap_config = { |
0f5f7078 SK |
124 | .reg_bits = 8, |
125 | .val_bits = 8, | |
126 | }; | |
127 | ||
a30fffb0 | 128 | static const struct regmap_config s2mps11_regmap_config = { |
25f311fa MB |
129 | .reg_bits = 8, |
130 | .val_bits = 8, | |
131 | ||
132 | .max_register = S2MPS11_REG_L38CTRL, | |
6b845ba9 MB |
133 | .volatile_reg = s2mps11_volatile, |
134 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
135 | }; |
136 | ||
dc691966 KK |
137 | static const struct regmap_config s2mps14_regmap_config = { |
138 | .reg_bits = 8, | |
139 | .val_bits = 8, | |
140 | ||
141 | .max_register = S2MPS14_REG_LDODSCH3, | |
142 | .volatile_reg = s2mps11_volatile, | |
143 | .cache_type = REGCACHE_FLAT, | |
144 | }; | |
145 | ||
a30fffb0 | 146 | static const struct regmap_config s5m8763_regmap_config = { |
25f311fa MB |
147 | .reg_bits = 8, |
148 | .val_bits = 8, | |
149 | ||
150 | .max_register = S5M8763_REG_LBCNFG2, | |
6b845ba9 MB |
151 | .volatile_reg = s5m8763_volatile, |
152 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
153 | }; |
154 | ||
a30fffb0 | 155 | static const struct regmap_config s5m8767_regmap_config = { |
25f311fa MB |
156 | .reg_bits = 8, |
157 | .val_bits = 8, | |
158 | ||
159 | .max_register = S5M8767_REG_LDO28CTRL, | |
6b845ba9 MB |
160 | .volatile_reg = s2mps11_volatile, |
161 | .cache_type = REGCACHE_FLAT, | |
25f311fa | 162 | }; |
26aec009 | 163 | |
dc691966 | 164 | static const struct regmap_config s5m_rtc_regmap_config = { |
3e1e4a5f KK |
165 | .reg_bits = 8, |
166 | .val_bits = 8, | |
b07e2b70 KK |
167 | |
168 | .max_register = SEC_RTC_REG_MAX, | |
3e1e4a5f KK |
169 | }; |
170 | ||
dc691966 KK |
171 | static const struct regmap_config s2mps14_rtc_regmap_config = { |
172 | .reg_bits = 8, | |
173 | .val_bits = 8, | |
174 | ||
175 | .max_register = S2MPS_RTC_REG_MAX, | |
176 | }; | |
177 | ||
26aec009 ADK |
178 | #ifdef CONFIG_OF |
179 | /* | |
180 | * Only the common platform data elements for s5m8767 are parsed here from the | |
181 | * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and | |
182 | * others have to parse their own platform data elements from device tree. | |
183 | * | |
184 | * The s5m8767 platform data structure is instantiated here and the drivers for | |
185 | * the sub-modules need not instantiate another instance while parsing their | |
186 | * platform data. | |
187 | */ | |
188 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( | |
189 | struct device *dev) | |
190 | { | |
191 | struct sec_platform_data *pd; | |
192 | ||
193 | pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); | |
194 | if (!pd) { | |
195 | dev_err(dev, "could not allocate memory for pdata\n"); | |
196 | return ERR_PTR(-ENOMEM); | |
197 | } | |
198 | ||
199 | /* | |
200 | * ToDo: the 'wakeup' member in the platform data is more of a linux | |
201 | * specfic information. Hence, there is no binding for that yet and | |
202 | * not parsed here. | |
203 | */ | |
204 | ||
205 | return pd; | |
206 | } | |
207 | #else | |
197bf856 | 208 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( |
26aec009 ADK |
209 | struct device *dev) |
210 | { | |
005718c0 | 211 | return NULL; |
26aec009 ADK |
212 | } |
213 | #endif | |
214 | ||
8f695de5 | 215 | static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c, |
26aec009 ADK |
216 | const struct i2c_device_id *id) |
217 | { | |
218 | #ifdef CONFIG_OF | |
219 | if (i2c->dev.of_node) { | |
220 | const struct of_device_id *match; | |
221 | match = of_match_node(sec_dt_match, i2c->dev.of_node); | |
8f695de5 | 222 | return (unsigned long)match->data; |
26aec009 ADK |
223 | } |
224 | #endif | |
8f695de5 | 225 | return id->driver_data; |
26aec009 ADK |
226 | } |
227 | ||
63063bfb | 228 | static int sec_pmic_probe(struct i2c_client *i2c, |
0f5f7078 SK |
229 | const struct i2c_device_id *id) |
230 | { | |
334a41ce | 231 | struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev); |
3e5a45f7 | 232 | const struct regmap_config *regmap, *regmap_rtc; |
63063bfb | 233 | struct sec_pmic_dev *sec_pmic; |
61a2af30 | 234 | int ret; |
0f5f7078 | 235 | |
63063bfb | 236 | sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), |
621210e2 | 237 | GFP_KERNEL); |
63063bfb | 238 | if (sec_pmic == NULL) |
0f5f7078 SK |
239 | return -ENOMEM; |
240 | ||
63063bfb SK |
241 | i2c_set_clientdata(i2c, sec_pmic); |
242 | sec_pmic->dev = &i2c->dev; | |
243 | sec_pmic->i2c = i2c; | |
244 | sec_pmic->irq = i2c->irq; | |
26aec009 ADK |
245 | sec_pmic->type = sec_i2c_get_driver_data(i2c, id); |
246 | ||
247 | if (sec_pmic->dev->of_node) { | |
248 | pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev); | |
249 | if (IS_ERR(pdata)) { | |
250 | ret = PTR_ERR(pdata); | |
251 | return ret; | |
252 | } | |
253 | pdata->device_type = sec_pmic->type; | |
254 | } | |
0f5f7078 | 255 | if (pdata) { |
63063bfb SK |
256 | sec_pmic->device_type = pdata->device_type; |
257 | sec_pmic->ono = pdata->ono; | |
258 | sec_pmic->irq_base = pdata->irq_base; | |
259 | sec_pmic->wakeup = pdata->wakeup; | |
26aec009 | 260 | sec_pmic->pdata = pdata; |
0f5f7078 SK |
261 | } |
262 | ||
25f311fa MB |
263 | switch (sec_pmic->device_type) { |
264 | case S2MPS11X: | |
265 | regmap = &s2mps11_regmap_config; | |
3e5a45f7 KK |
266 | /* |
267 | * The rtc-s5m driver does not support S2MPS11 and there | |
268 | * is no mfd_cell for S2MPS11 RTC device. | |
269 | * However we must pass something to devm_regmap_init_i2c() | |
270 | * so use S5M-like regmap config even though it wouldn't work. | |
271 | */ | |
dc691966 KK |
272 | regmap_rtc = &s5m_rtc_regmap_config; |
273 | break; | |
274 | case S2MPS14X: | |
275 | regmap = &s2mps14_regmap_config; | |
276 | regmap_rtc = &s2mps14_rtc_regmap_config; | |
25f311fa MB |
277 | break; |
278 | case S5M8763X: | |
279 | regmap = &s5m8763_regmap_config; | |
dc691966 | 280 | regmap_rtc = &s5m_rtc_regmap_config; |
25f311fa MB |
281 | break; |
282 | case S5M8767X: | |
283 | regmap = &s5m8767_regmap_config; | |
dc691966 | 284 | regmap_rtc = &s5m_rtc_regmap_config; |
25f311fa MB |
285 | break; |
286 | default: | |
287 | regmap = &sec_regmap_config; | |
dc691966 | 288 | regmap_rtc = &s5m_rtc_regmap_config; |
25f311fa MB |
289 | break; |
290 | } | |
291 | ||
3e1e4a5f KK |
292 | sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap); |
293 | if (IS_ERR(sec_pmic->regmap_pmic)) { | |
294 | ret = PTR_ERR(sec_pmic->regmap_pmic); | |
0f5f7078 | 295 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
61a2af30 | 296 | ret); |
1092e1c7 | 297 | return ret; |
0f5f7078 SK |
298 | } |
299 | ||
63063bfb | 300 | sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR); |
65aba1e0 KK |
301 | if (!sec_pmic->rtc) { |
302 | dev_err(&i2c->dev, "Failed to allocate I2C for RTC\n"); | |
303 | return -ENODEV; | |
304 | } | |
63063bfb | 305 | i2c_set_clientdata(sec_pmic->rtc, sec_pmic); |
0f5f7078 | 306 | |
3e5a45f7 | 307 | sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc, regmap_rtc); |
3e1e4a5f KK |
308 | if (IS_ERR(sec_pmic->regmap_rtc)) { |
309 | ret = PTR_ERR(sec_pmic->regmap_rtc); | |
310 | dev_err(&i2c->dev, "Failed to allocate RTC register map: %d\n", | |
311 | ret); | |
312 | return ret; | |
313 | } | |
314 | ||
c3ebb30a | 315 | if (pdata && pdata->cfg_pmic_irq) |
0f5f7078 SK |
316 | pdata->cfg_pmic_irq(); |
317 | ||
63063bfb | 318 | sec_irq_init(sec_pmic); |
0f5f7078 | 319 | |
63063bfb | 320 | pm_runtime_set_active(sec_pmic->dev); |
0f5f7078 | 321 | |
63063bfb | 322 | switch (sec_pmic->device_type) { |
88a1cfd6 | 323 | case S5M8751X: |
63063bfb | 324 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs, |
0848c94f | 325 | ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL); |
88a1cfd6 SK |
326 | break; |
327 | case S5M8763X: | |
63063bfb | 328 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs, |
0848c94f | 329 | ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL); |
88a1cfd6 SK |
330 | break; |
331 | case S5M8767X: | |
63063bfb | 332 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs, |
0848c94f | 333 | ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL); |
88a1cfd6 | 334 | break; |
9b6d1343 SK |
335 | case S2MPS11X: |
336 | ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs, | |
0848c94f | 337 | ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL); |
9b6d1343 | 338 | break; |
dc691966 KK |
339 | case S2MPS14X: |
340 | ret = mfd_add_devices(sec_pmic->dev, -1, s2mps14_devs, | |
341 | ARRAY_SIZE(s2mps14_devs), NULL, 0, NULL); | |
342 | break; | |
88a1cfd6 SK |
343 | default: |
344 | /* If this happens the probe function is problem */ | |
345 | BUG(); | |
346 | } | |
0f5f7078 | 347 | |
15447a46 | 348 | if (ret) |
0f5f7078 SK |
349 | goto err; |
350 | ||
f6d6daaf KK |
351 | device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup); |
352 | ||
0f5f7078 SK |
353 | return ret; |
354 | ||
355 | err: | |
63063bfb SK |
356 | sec_irq_exit(sec_pmic); |
357 | i2c_unregister_device(sec_pmic->rtc); | |
0f5f7078 SK |
358 | return ret; |
359 | } | |
360 | ||
63063bfb | 361 | static int sec_pmic_remove(struct i2c_client *i2c) |
0f5f7078 | 362 | { |
63063bfb | 363 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
0f5f7078 | 364 | |
63063bfb SK |
365 | mfd_remove_devices(sec_pmic->dev); |
366 | sec_irq_exit(sec_pmic); | |
367 | i2c_unregister_device(sec_pmic->rtc); | |
0f5f7078 SK |
368 | return 0; |
369 | } | |
370 | ||
8321bbf8 | 371 | #ifdef CONFIG_PM_SLEEP |
f6d6daaf KK |
372 | static int sec_pmic_suspend(struct device *dev) |
373 | { | |
374 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
375 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
376 | ||
377 | if (device_may_wakeup(dev)) { | |
378 | enable_irq_wake(sec_pmic->irq); | |
379 | /* | |
380 | * PMIC IRQ must be disabled during suspend for RTC alarm | |
381 | * to work properly. | |
382 | * When device is woken up from suspend by RTC Alarm, an | |
383 | * interrupt occurs before resuming I2C bus controller. | |
384 | * The interrupt is handled by regmap_irq_thread which tries | |
385 | * to read RTC registers. This read fails (I2C is still | |
386 | * suspended) and RTC Alarm interrupt is disabled. | |
387 | */ | |
388 | disable_irq(sec_pmic->irq); | |
389 | } | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
394 | static int sec_pmic_resume(struct device *dev) | |
395 | { | |
396 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
397 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
398 | ||
399 | if (device_may_wakeup(dev)) { | |
400 | disable_irq_wake(sec_pmic->irq); | |
401 | enable_irq(sec_pmic->irq); | |
402 | } | |
403 | ||
404 | return 0; | |
405 | } | |
8321bbf8 | 406 | #endif /* CONFIG_PM_SLEEP */ |
f6d6daaf KK |
407 | |
408 | static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume); | |
409 | ||
63063bfb SK |
410 | static const struct i2c_device_id sec_pmic_id[] = { |
411 | { "sec_pmic", 0 }, | |
0f5f7078 SK |
412 | { } |
413 | }; | |
63063bfb | 414 | MODULE_DEVICE_TABLE(i2c, sec_pmic_id); |
0f5f7078 | 415 | |
63063bfb | 416 | static struct i2c_driver sec_pmic_driver = { |
0f5f7078 | 417 | .driver = { |
63063bfb | 418 | .name = "sec_pmic", |
0f5f7078 | 419 | .owner = THIS_MODULE, |
f6d6daaf | 420 | .pm = &sec_pmic_pm_ops, |
26aec009 | 421 | .of_match_table = of_match_ptr(sec_dt_match), |
0f5f7078 | 422 | }, |
63063bfb SK |
423 | .probe = sec_pmic_probe, |
424 | .remove = sec_pmic_remove, | |
425 | .id_table = sec_pmic_id, | |
0f5f7078 SK |
426 | }; |
427 | ||
63063bfb | 428 | static int __init sec_pmic_init(void) |
0f5f7078 | 429 | { |
63063bfb | 430 | return i2c_add_driver(&sec_pmic_driver); |
0f5f7078 SK |
431 | } |
432 | ||
63063bfb | 433 | subsys_initcall(sec_pmic_init); |
0f5f7078 | 434 | |
63063bfb | 435 | static void __exit sec_pmic_exit(void) |
0f5f7078 | 436 | { |
63063bfb | 437 | i2c_del_driver(&sec_pmic_driver); |
0f5f7078 | 438 | } |
63063bfb | 439 | module_exit(sec_pmic_exit); |
0f5f7078 SK |
440 | |
441 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
442 | MODULE_DESCRIPTION("Core support for the S5M MFD"); | |
443 | MODULE_LICENSE("GPL"); |