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> |
76b9840b | 30 | #include <linux/mfd/samsung/s2mps13.h> |
dc691966 | 31 | #include <linux/mfd/samsung/s2mps14.h> |
00e2573d | 32 | #include <linux/mfd/samsung/s2mpu02.h> |
25f311fa MB |
33 | #include <linux/mfd/samsung/s5m8763.h> |
34 | #include <linux/mfd/samsung/s5m8767.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", | |
eea2e596 KK |
71 | }, { |
72 | .name = "s2mps14-rtc", | |
3134bcae YSB |
73 | }, { |
74 | .name = "s2mps11-clk", | |
53c31b34 | 75 | .of_compatible = "samsung,s2mps11-clk", |
3134bcae | 76 | } |
9b6d1343 SK |
77 | }; |
78 | ||
3bc2ee91 CC |
79 | static const struct mfd_cell s2mps13_devs[] = { |
80 | { .name = "s2mps13-pmic", }, | |
81 | { .name = "s2mps13-rtc", }, | |
82 | { | |
83 | .name = "s2mps13-clk", | |
84 | .of_compatible = "samsung,s2mps13-clk", | |
85 | }, | |
86 | }; | |
87 | ||
dc691966 KK |
88 | static const struct mfd_cell s2mps14_devs[] = { |
89 | { | |
90 | .name = "s2mps14-pmic", | |
91 | }, { | |
92 | .name = "s2mps14-rtc", | |
93 | }, { | |
94 | .name = "s2mps14-clk", | |
53c31b34 | 95 | .of_compatible = "samsung,s2mps14-clk", |
dc691966 KK |
96 | } |
97 | }; | |
98 | ||
ce24991e SK |
99 | static const struct mfd_cell s2mpa01_devs[] = { |
100 | { | |
101 | .name = "s2mpa01-pmic", | |
102 | }, | |
103 | }; | |
104 | ||
54e8827d CC |
105 | static const struct mfd_cell s2mpu02_devs[] = { |
106 | { .name = "s2mpu02-pmic", }, | |
107 | { .name = "s2mpu02-rtc", }, | |
108 | { | |
109 | .name = "s2mpu02-clk", | |
110 | .of_compatible = "samsung,s2mpu02-clk", | |
111 | } | |
112 | }; | |
113 | ||
26aec009 | 114 | #ifdef CONFIG_OF |
df20b7c5 | 115 | static const struct of_device_id sec_dt_match[] = { |
26aec009 ADK |
116 | { .compatible = "samsung,s5m8767-pmic", |
117 | .data = (void *)S5M8767X, | |
ce24991e SK |
118 | }, { |
119 | .compatible = "samsung,s2mps11-pmic", | |
aa32acad | 120 | .data = (void *)S2MPS11X, |
3bc2ee91 CC |
121 | }, { |
122 | .compatible = "samsung,s2mps13-pmic", | |
123 | .data = (void *)S2MPS13X, | |
ce24991e SK |
124 | }, { |
125 | .compatible = "samsung,s2mps14-pmic", | |
dc691966 | 126 | .data = (void *)S2MPS14X, |
ce24991e SK |
127 | }, { |
128 | .compatible = "samsung,s2mpa01-pmic", | |
129 | .data = (void *)S2MPA01, | |
54e8827d CC |
130 | }, { |
131 | .compatible = "samsung,s2mpu02-pmic", | |
132 | .data = (void *)S2MPU02, | |
ce24991e SK |
133 | }, { |
134 | /* Sentinel */ | |
dc691966 | 135 | }, |
26aec009 ADK |
136 | }; |
137 | #endif | |
138 | ||
ce24991e SK |
139 | static bool s2mpa01_volatile(struct device *dev, unsigned int reg) |
140 | { | |
141 | switch (reg) { | |
142 | case S2MPA01_REG_INT1M: | |
143 | case S2MPA01_REG_INT2M: | |
144 | case S2MPA01_REG_INT3M: | |
145 | return false; | |
146 | default: | |
147 | return true; | |
148 | } | |
149 | } | |
150 | ||
6b845ba9 MB |
151 | static bool s2mps11_volatile(struct device *dev, unsigned int reg) |
152 | { | |
153 | switch (reg) { | |
154 | case S2MPS11_REG_INT1M: | |
155 | case S2MPS11_REG_INT2M: | |
156 | case S2MPS11_REG_INT3M: | |
157 | return false; | |
158 | default: | |
159 | return true; | |
160 | } | |
161 | } | |
162 | ||
00e2573d CC |
163 | static bool s2mpu02_volatile(struct device *dev, unsigned int reg) |
164 | { | |
165 | switch (reg) { | |
166 | case S2MPU02_REG_INT1M: | |
167 | case S2MPU02_REG_INT2M: | |
168 | case S2MPU02_REG_INT3M: | |
169 | return false; | |
170 | default: | |
171 | return true; | |
172 | } | |
173 | } | |
174 | ||
6b845ba9 MB |
175 | static bool s5m8763_volatile(struct device *dev, unsigned int reg) |
176 | { | |
177 | switch (reg) { | |
178 | case S5M8763_REG_IRQM1: | |
179 | case S5M8763_REG_IRQM2: | |
180 | case S5M8763_REG_IRQM3: | |
181 | case S5M8763_REG_IRQM4: | |
182 | return false; | |
183 | default: | |
184 | return true; | |
185 | } | |
186 | } | |
187 | ||
a30fffb0 | 188 | static const struct regmap_config sec_regmap_config = { |
0f5f7078 SK |
189 | .reg_bits = 8, |
190 | .val_bits = 8, | |
191 | }; | |
192 | ||
ce24991e SK |
193 | static const struct regmap_config s2mpa01_regmap_config = { |
194 | .reg_bits = 8, | |
195 | .val_bits = 8, | |
196 | ||
197 | .max_register = S2MPA01_REG_LDO_OVCB4, | |
198 | .volatile_reg = s2mpa01_volatile, | |
199 | .cache_type = REGCACHE_FLAT, | |
200 | }; | |
201 | ||
a30fffb0 | 202 | static const struct regmap_config s2mps11_regmap_config = { |
25f311fa MB |
203 | .reg_bits = 8, |
204 | .val_bits = 8, | |
205 | ||
206 | .max_register = S2MPS11_REG_L38CTRL, | |
6b845ba9 MB |
207 | .volatile_reg = s2mps11_volatile, |
208 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
209 | }; |
210 | ||
76b9840b CC |
211 | static const struct regmap_config s2mps13_regmap_config = { |
212 | .reg_bits = 8, | |
213 | .val_bits = 8, | |
214 | ||
215 | .max_register = S2MPS13_REG_LDODSCH5, | |
216 | .volatile_reg = s2mps11_volatile, | |
217 | .cache_type = REGCACHE_FLAT, | |
218 | }; | |
219 | ||
dc691966 KK |
220 | static const struct regmap_config s2mps14_regmap_config = { |
221 | .reg_bits = 8, | |
222 | .val_bits = 8, | |
223 | ||
224 | .max_register = S2MPS14_REG_LDODSCH3, | |
225 | .volatile_reg = s2mps11_volatile, | |
226 | .cache_type = REGCACHE_FLAT, | |
227 | }; | |
228 | ||
00e2573d CC |
229 | static const struct regmap_config s2mpu02_regmap_config = { |
230 | .reg_bits = 8, | |
231 | .val_bits = 8, | |
232 | ||
233 | .max_register = S2MPU02_REG_DVSDATA, | |
234 | .volatile_reg = s2mpu02_volatile, | |
235 | .cache_type = REGCACHE_FLAT, | |
236 | }; | |
237 | ||
a30fffb0 | 238 | static const struct regmap_config s5m8763_regmap_config = { |
25f311fa MB |
239 | .reg_bits = 8, |
240 | .val_bits = 8, | |
241 | ||
242 | .max_register = S5M8763_REG_LBCNFG2, | |
6b845ba9 MB |
243 | .volatile_reg = s5m8763_volatile, |
244 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
245 | }; |
246 | ||
a30fffb0 | 247 | static const struct regmap_config s5m8767_regmap_config = { |
25f311fa MB |
248 | .reg_bits = 8, |
249 | .val_bits = 8, | |
250 | ||
251 | .max_register = S5M8767_REG_LDO28CTRL, | |
6b845ba9 MB |
252 | .volatile_reg = s2mps11_volatile, |
253 | .cache_type = REGCACHE_FLAT, | |
25f311fa | 254 | }; |
26aec009 | 255 | |
c2c9f1fe KK |
256 | static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic) |
257 | { | |
258 | unsigned int val; | |
259 | ||
260 | /* For each device type, the REG_ID is always the first register */ | |
261 | if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val)) | |
262 | dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val); | |
263 | } | |
264 | ||
8a97d428 KK |
265 | static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic) |
266 | { | |
267 | int err; | |
268 | ||
269 | if (sec_pmic->device_type != S2MPS13X) | |
270 | return; | |
271 | ||
272 | if (sec_pmic->pdata->disable_wrstbi) { | |
273 | /* | |
274 | * If WRSTBI pin is pulled down this feature must be disabled | |
275 | * because each Suspend to RAM will trigger buck voltage reset | |
276 | * to default values. | |
277 | */ | |
278 | err = regmap_update_bits(sec_pmic->regmap_pmic, | |
279 | S2MPS13_REG_WRSTBI, | |
280 | S2MPS13_REG_WRSTBI_MASK, 0x0); | |
281 | if (err) | |
282 | dev_warn(sec_pmic->dev, | |
283 | "Cannot initialize WRSTBI config: %d\n", | |
284 | err); | |
285 | } | |
286 | } | |
287 | ||
26aec009 ADK |
288 | #ifdef CONFIG_OF |
289 | /* | |
290 | * Only the common platform data elements for s5m8767 are parsed here from the | |
291 | * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and | |
292 | * others have to parse their own platform data elements from device tree. | |
293 | * | |
294 | * The s5m8767 platform data structure is instantiated here and the drivers for | |
295 | * the sub-modules need not instantiate another instance while parsing their | |
296 | * platform data. | |
297 | */ | |
298 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( | |
299 | struct device *dev) | |
300 | { | |
301 | struct sec_platform_data *pd; | |
302 | ||
303 | pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); | |
82a00c49 | 304 | if (!pd) |
26aec009 | 305 | return ERR_PTR(-ENOMEM); |
26aec009 ADK |
306 | |
307 | /* | |
308 | * ToDo: the 'wakeup' member in the platform data is more of a linux | |
309 | * specfic information. Hence, there is no binding for that yet and | |
310 | * not parsed here. | |
311 | */ | |
312 | ||
d785334a KK |
313 | pd->manual_poweroff = of_property_read_bool(dev->of_node, |
314 | "samsung,s2mps11-acokb-ground"); | |
8a97d428 KK |
315 | pd->disable_wrstbi = of_property_read_bool(dev->of_node, |
316 | "samsung,s2mps11-wrstbi-ground"); | |
26aec009 ADK |
317 | return pd; |
318 | } | |
319 | #else | |
197bf856 | 320 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( |
26aec009 ADK |
321 | struct device *dev) |
322 | { | |
005718c0 | 323 | return NULL; |
26aec009 ADK |
324 | } |
325 | #endif | |
326 | ||
8f695de5 | 327 | static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c, |
26aec009 ADK |
328 | const struct i2c_device_id *id) |
329 | { | |
330 | #ifdef CONFIG_OF | |
331 | if (i2c->dev.of_node) { | |
332 | const struct of_device_id *match; | |
b6c1cb4d | 333 | |
26aec009 | 334 | match = of_match_node(sec_dt_match, i2c->dev.of_node); |
8f695de5 | 335 | return (unsigned long)match->data; |
26aec009 ADK |
336 | } |
337 | #endif | |
8f695de5 | 338 | return id->driver_data; |
26aec009 ADK |
339 | } |
340 | ||
63063bfb | 341 | static int sec_pmic_probe(struct i2c_client *i2c, |
0f5f7078 SK |
342 | const struct i2c_device_id *id) |
343 | { | |
334a41ce | 344 | struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev); |
e349c910 | 345 | const struct regmap_config *regmap; |
54e8827d | 346 | const struct mfd_cell *sec_devs; |
63063bfb | 347 | struct sec_pmic_dev *sec_pmic; |
9549b5ff | 348 | unsigned long device_type; |
54e8827d | 349 | int ret, num_sec_devs; |
0f5f7078 | 350 | |
63063bfb | 351 | sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), |
621210e2 | 352 | GFP_KERNEL); |
63063bfb | 353 | if (sec_pmic == NULL) |
0f5f7078 SK |
354 | return -ENOMEM; |
355 | ||
63063bfb SK |
356 | i2c_set_clientdata(i2c, sec_pmic); |
357 | sec_pmic->dev = &i2c->dev; | |
358 | sec_pmic->i2c = i2c; | |
359 | sec_pmic->irq = i2c->irq; | |
9549b5ff | 360 | device_type = sec_i2c_get_driver_data(i2c, id); |
26aec009 ADK |
361 | |
362 | if (sec_pmic->dev->of_node) { | |
363 | pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev); | |
364 | if (IS_ERR(pdata)) { | |
365 | ret = PTR_ERR(pdata); | |
366 | return ret; | |
367 | } | |
9549b5ff | 368 | pdata->device_type = device_type; |
26aec009 | 369 | } |
0f5f7078 | 370 | if (pdata) { |
63063bfb | 371 | sec_pmic->device_type = pdata->device_type; |
63063bfb SK |
372 | sec_pmic->irq_base = pdata->irq_base; |
373 | sec_pmic->wakeup = pdata->wakeup; | |
26aec009 | 374 | sec_pmic->pdata = pdata; |
0f5f7078 SK |
375 | } |
376 | ||
25f311fa | 377 | switch (sec_pmic->device_type) { |
ce24991e SK |
378 | case S2MPA01: |
379 | regmap = &s2mpa01_regmap_config; | |
380 | break; | |
25f311fa MB |
381 | case S2MPS11X: |
382 | regmap = &s2mps11_regmap_config; | |
dc691966 | 383 | break; |
76b9840b CC |
384 | case S2MPS13X: |
385 | regmap = &s2mps13_regmap_config; | |
386 | break; | |
dc691966 KK |
387 | case S2MPS14X: |
388 | regmap = &s2mps14_regmap_config; | |
25f311fa MB |
389 | break; |
390 | case S5M8763X: | |
391 | regmap = &s5m8763_regmap_config; | |
392 | break; | |
393 | case S5M8767X: | |
394 | regmap = &s5m8767_regmap_config; | |
395 | break; | |
00e2573d CC |
396 | case S2MPU02: |
397 | regmap = &s2mpu02_regmap_config; | |
398 | break; | |
25f311fa MB |
399 | default: |
400 | regmap = &sec_regmap_config; | |
401 | break; | |
402 | } | |
403 | ||
3e1e4a5f KK |
404 | sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap); |
405 | if (IS_ERR(sec_pmic->regmap_pmic)) { | |
406 | ret = PTR_ERR(sec_pmic->regmap_pmic); | |
0f5f7078 | 407 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
61a2af30 | 408 | ret); |
1092e1c7 | 409 | return ret; |
0f5f7078 SK |
410 | } |
411 | ||
c3ebb30a | 412 | if (pdata && pdata->cfg_pmic_irq) |
0f5f7078 SK |
413 | pdata->cfg_pmic_irq(); |
414 | ||
63063bfb | 415 | sec_irq_init(sec_pmic); |
0f5f7078 | 416 | |
63063bfb | 417 | pm_runtime_set_active(sec_pmic->dev); |
0f5f7078 | 418 | |
63063bfb | 419 | switch (sec_pmic->device_type) { |
88a1cfd6 | 420 | case S5M8751X: |
54e8827d CC |
421 | sec_devs = s5m8751_devs; |
422 | num_sec_devs = ARRAY_SIZE(s5m8751_devs); | |
88a1cfd6 SK |
423 | break; |
424 | case S5M8763X: | |
54e8827d CC |
425 | sec_devs = s5m8763_devs; |
426 | num_sec_devs = ARRAY_SIZE(s5m8763_devs); | |
88a1cfd6 SK |
427 | break; |
428 | case S5M8767X: | |
54e8827d CC |
429 | sec_devs = s5m8767_devs; |
430 | num_sec_devs = ARRAY_SIZE(s5m8767_devs); | |
88a1cfd6 | 431 | break; |
ce24991e | 432 | case S2MPA01: |
54e8827d CC |
433 | sec_devs = s2mpa01_devs; |
434 | num_sec_devs = ARRAY_SIZE(s2mpa01_devs); | |
ce24991e | 435 | break; |
9b6d1343 | 436 | case S2MPS11X: |
54e8827d CC |
437 | sec_devs = s2mps11_devs; |
438 | num_sec_devs = ARRAY_SIZE(s2mps11_devs); | |
9b6d1343 | 439 | break; |
3bc2ee91 CC |
440 | case S2MPS13X: |
441 | sec_devs = s2mps13_devs; | |
442 | num_sec_devs = ARRAY_SIZE(s2mps13_devs); | |
443 | break; | |
dc691966 | 444 | case S2MPS14X: |
54e8827d CC |
445 | sec_devs = s2mps14_devs; |
446 | num_sec_devs = ARRAY_SIZE(s2mps14_devs); | |
447 | break; | |
448 | case S2MPU02: | |
449 | sec_devs = s2mpu02_devs; | |
450 | num_sec_devs = ARRAY_SIZE(s2mpu02_devs); | |
dc691966 | 451 | break; |
88a1cfd6 SK |
452 | default: |
453 | /* If this happens the probe function is problem */ | |
454 | BUG(); | |
455 | } | |
54e8827d CC |
456 | ret = mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, NULL, |
457 | 0, NULL); | |
15447a46 | 458 | if (ret) |
8c66eece | 459 | goto err_mfd; |
0f5f7078 | 460 | |
f6d6daaf | 461 | device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup); |
8a97d428 | 462 | sec_pmic_configure(sec_pmic); |
c2c9f1fe | 463 | sec_pmic_dump_rev(sec_pmic); |
f6d6daaf | 464 | |
0f5f7078 SK |
465 | return ret; |
466 | ||
8c66eece | 467 | err_mfd: |
63063bfb | 468 | sec_irq_exit(sec_pmic); |
0f5f7078 SK |
469 | return ret; |
470 | } | |
471 | ||
63063bfb | 472 | static int sec_pmic_remove(struct i2c_client *i2c) |
0f5f7078 | 473 | { |
63063bfb | 474 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
0f5f7078 | 475 | |
63063bfb SK |
476 | mfd_remove_devices(sec_pmic->dev); |
477 | sec_irq_exit(sec_pmic); | |
0f5f7078 SK |
478 | return 0; |
479 | } | |
480 | ||
d785334a KK |
481 | static void sec_pmic_shutdown(struct i2c_client *i2c) |
482 | { | |
483 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
484 | unsigned int reg, mask; | |
485 | ||
486 | if (!sec_pmic->pdata->manual_poweroff) | |
487 | return; | |
488 | ||
489 | switch (sec_pmic->device_type) { | |
490 | case S2MPS11X: | |
491 | reg = S2MPS11_REG_CTRL1; | |
492 | mask = S2MPS11_CTRL1_PWRHOLD_MASK; | |
493 | break; | |
494 | default: | |
495 | /* | |
496 | * Currently only one board with S2MPS11 needs this, so just | |
497 | * ignore the rest. | |
498 | */ | |
499 | dev_warn(sec_pmic->dev, | |
500 | "Unsupported device %lu for manual power off\n", | |
501 | sec_pmic->device_type); | |
502 | return; | |
503 | } | |
504 | ||
505 | regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 0); | |
506 | } | |
507 | ||
8321bbf8 | 508 | #ifdef CONFIG_PM_SLEEP |
f6d6daaf KK |
509 | static int sec_pmic_suspend(struct device *dev) |
510 | { | |
511 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
512 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
513 | ||
360d15d6 | 514 | if (device_may_wakeup(dev)) |
f6d6daaf | 515 | enable_irq_wake(sec_pmic->irq); |
360d15d6 KK |
516 | /* |
517 | * PMIC IRQ must be disabled during suspend for RTC alarm | |
518 | * to work properly. | |
519 | * When device is woken up from suspend, an | |
520 | * interrupt occurs before resuming I2C bus controller. | |
521 | * The interrupt is handled by regmap_irq_thread which tries | |
522 | * to read RTC registers. This read fails (I2C is still | |
523 | * suspended) and RTC Alarm interrupt is disabled. | |
524 | */ | |
525 | disable_irq(sec_pmic->irq); | |
f6d6daaf KK |
526 | |
527 | return 0; | |
528 | } | |
529 | ||
530 | static int sec_pmic_resume(struct device *dev) | |
531 | { | |
532 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
533 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
534 | ||
360d15d6 | 535 | if (device_may_wakeup(dev)) |
f6d6daaf | 536 | disable_irq_wake(sec_pmic->irq); |
360d15d6 | 537 | enable_irq(sec_pmic->irq); |
f6d6daaf KK |
538 | |
539 | return 0; | |
540 | } | |
8321bbf8 | 541 | #endif /* CONFIG_PM_SLEEP */ |
f6d6daaf KK |
542 | |
543 | static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume); | |
544 | ||
63063bfb SK |
545 | static const struct i2c_device_id sec_pmic_id[] = { |
546 | { "sec_pmic", 0 }, | |
0f5f7078 SK |
547 | { } |
548 | }; | |
63063bfb | 549 | MODULE_DEVICE_TABLE(i2c, sec_pmic_id); |
0f5f7078 | 550 | |
63063bfb | 551 | static struct i2c_driver sec_pmic_driver = { |
0f5f7078 | 552 | .driver = { |
63063bfb | 553 | .name = "sec_pmic", |
f6d6daaf | 554 | .pm = &sec_pmic_pm_ops, |
26aec009 | 555 | .of_match_table = of_match_ptr(sec_dt_match), |
0f5f7078 | 556 | }, |
63063bfb SK |
557 | .probe = sec_pmic_probe, |
558 | .remove = sec_pmic_remove, | |
d785334a | 559 | .shutdown = sec_pmic_shutdown, |
63063bfb | 560 | .id_table = sec_pmic_id, |
0f5f7078 SK |
561 | }; |
562 | ||
63063bfb | 563 | static int __init sec_pmic_init(void) |
0f5f7078 | 564 | { |
63063bfb | 565 | return i2c_add_driver(&sec_pmic_driver); |
0f5f7078 SK |
566 | } |
567 | ||
63063bfb | 568 | subsys_initcall(sec_pmic_init); |
0f5f7078 | 569 | |
63063bfb | 570 | static void __exit sec_pmic_exit(void) |
0f5f7078 | 571 | { |
63063bfb | 572 | i2c_del_driver(&sec_pmic_driver); |
0f5f7078 | 573 | } |
63063bfb | 574 | module_exit(sec_pmic_exit); |
0f5f7078 SK |
575 | |
576 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
577 | MODULE_DESCRIPTION("Core support for the S5M MFD"); | |
578 | MODULE_LICENSE("GPL"); |