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39b27ad9 KK |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // | |
3 | // Copyright (c) 2012 Samsung Electronics Co., Ltd | |
4 | // http://www.samsung.com | |
0f5f7078 SK |
5 | |
6 | #include <linux/module.h> | |
7 | #include <linux/moduleparam.h> | |
8 | #include <linux/init.h> | |
9 | #include <linux/err.h> | |
10 | #include <linux/slab.h> | |
11 | #include <linux/i2c.h> | |
1c5a099b | 12 | #include <linux/of.h> |
26aec009 | 13 | #include <linux/of_irq.h> |
0f5f7078 SK |
14 | #include <linux/interrupt.h> |
15 | #include <linux/pm_runtime.h> | |
16 | #include <linux/mutex.h> | |
17 | #include <linux/mfd/core.h> | |
54227bcf SK |
18 | #include <linux/mfd/samsung/core.h> |
19 | #include <linux/mfd/samsung/irq.h> | |
ce24991e | 20 | #include <linux/mfd/samsung/s2mpa01.h> |
25f311fa | 21 | #include <linux/mfd/samsung/s2mps11.h> |
76b9840b | 22 | #include <linux/mfd/samsung/s2mps13.h> |
dc691966 | 23 | #include <linux/mfd/samsung/s2mps14.h> |
9e4808d2 | 24 | #include <linux/mfd/samsung/s2mps15.h> |
00e2573d | 25 | #include <linux/mfd/samsung/s2mpu02.h> |
25f311fa MB |
26 | #include <linux/mfd/samsung/s5m8763.h> |
27 | #include <linux/mfd/samsung/s5m8767.h> | |
0f5f7078 SK |
28 | #include <linux/regmap.h> |
29 | ||
5ac98553 | 30 | static const struct mfd_cell s5m8751_devs[] = { |
f01faec6 SM |
31 | { .name = "s5m8751-pmic", }, |
32 | { .name = "s5m-charger", }, | |
33 | { .name = "s5m8751-codec", }, | |
88a1cfd6 SK |
34 | }; |
35 | ||
5ac98553 | 36 | static const struct mfd_cell s5m8763_devs[] = { |
f01faec6 SM |
37 | { .name = "s5m8763-pmic", }, |
38 | { .name = "s5m-rtc", }, | |
39 | { .name = "s5m-charger", }, | |
88a1cfd6 SK |
40 | }; |
41 | ||
5ac98553 | 42 | static const struct mfd_cell s5m8767_devs[] = { |
f01faec6 SM |
43 | { .name = "s5m8767-pmic", }, |
44 | { .name = "s5m-rtc", }, | |
0f5f7078 | 45 | { |
39fed00f | 46 | .name = "s5m8767-clk", |
53c31b34 | 47 | .of_compatible = "samsung,s5m8767-clk", |
f01faec6 | 48 | }, |
0f5f7078 SK |
49 | }; |
50 | ||
5ac98553 | 51 | static const struct mfd_cell s2mps11_devs[] = { |
f01faec6 SM |
52 | { .name = "s2mps11-regulator", }, |
53 | { .name = "s2mps14-rtc", }, | |
9b6d1343 | 54 | { |
3134bcae | 55 | .name = "s2mps11-clk", |
53c31b34 | 56 | .of_compatible = "samsung,s2mps11-clk", |
f01faec6 | 57 | }, |
9b6d1343 SK |
58 | }; |
59 | ||
3bc2ee91 | 60 | static const struct mfd_cell s2mps13_devs[] = { |
2fadbbf0 | 61 | { .name = "s2mps13-regulator", }, |
3bc2ee91 CC |
62 | { .name = "s2mps13-rtc", }, |
63 | { | |
64 | .name = "s2mps13-clk", | |
65 | .of_compatible = "samsung,s2mps13-clk", | |
66 | }, | |
67 | }; | |
68 | ||
dc691966 | 69 | static const struct mfd_cell s2mps14_devs[] = { |
f01faec6 SM |
70 | { .name = "s2mps14-regulator", }, |
71 | { .name = "s2mps14-rtc", }, | |
dc691966 | 72 | { |
dc691966 | 73 | .name = "s2mps14-clk", |
53c31b34 | 74 | .of_compatible = "samsung,s2mps14-clk", |
f01faec6 | 75 | }, |
dc691966 KK |
76 | }; |
77 | ||
9e4808d2 | 78 | static const struct mfd_cell s2mps15_devs[] = { |
f01faec6 SM |
79 | { .name = "s2mps15-regulator", }, |
80 | { .name = "s2mps15-rtc", }, | |
9e4808d2 | 81 | { |
9e4808d2 TA |
82 | .name = "s2mps13-clk", |
83 | .of_compatible = "samsung,s2mps13-clk", | |
84 | }, | |
85 | }; | |
86 | ||
ce24991e | 87 | static const struct mfd_cell s2mpa01_devs[] = { |
f01faec6 | 88 | { .name = "s2mpa01-pmic", }, |
ec85d4a1 | 89 | { .name = "s2mps14-rtc", }, |
ce24991e SK |
90 | }; |
91 | ||
54e8827d | 92 | static const struct mfd_cell s2mpu02_devs[] = { |
f01faec6 | 93 | { .name = "s2mpu02-regulator", }, |
54e8827d CC |
94 | }; |
95 | ||
26aec009 | 96 | #ifdef CONFIG_OF |
df20b7c5 | 97 | static const struct of_device_id sec_dt_match[] = { |
4720eb47 KK |
98 | { |
99 | .compatible = "samsung,s5m8767-pmic", | |
26aec009 | 100 | .data = (void *)S5M8767X, |
ce24991e SK |
101 | }, { |
102 | .compatible = "samsung,s2mps11-pmic", | |
aa32acad | 103 | .data = (void *)S2MPS11X, |
3bc2ee91 CC |
104 | }, { |
105 | .compatible = "samsung,s2mps13-pmic", | |
106 | .data = (void *)S2MPS13X, | |
ce24991e SK |
107 | }, { |
108 | .compatible = "samsung,s2mps14-pmic", | |
dc691966 | 109 | .data = (void *)S2MPS14X, |
9e4808d2 TA |
110 | }, { |
111 | .compatible = "samsung,s2mps15-pmic", | |
112 | .data = (void *)S2MPS15X, | |
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 | 122 | }; |
fe8166c9 | 123 | MODULE_DEVICE_TABLE(of, sec_dt_match); |
26aec009 ADK |
124 | #endif |
125 | ||
ce24991e SK |
126 | static bool s2mpa01_volatile(struct device *dev, unsigned int reg) |
127 | { | |
128 | switch (reg) { | |
129 | case S2MPA01_REG_INT1M: | |
130 | case S2MPA01_REG_INT2M: | |
131 | case S2MPA01_REG_INT3M: | |
132 | return false; | |
133 | default: | |
134 | return true; | |
135 | } | |
136 | } | |
137 | ||
6b845ba9 MB |
138 | static bool s2mps11_volatile(struct device *dev, unsigned int reg) |
139 | { | |
140 | switch (reg) { | |
141 | case S2MPS11_REG_INT1M: | |
142 | case S2MPS11_REG_INT2M: | |
143 | case S2MPS11_REG_INT3M: | |
144 | return false; | |
145 | default: | |
146 | return true; | |
147 | } | |
148 | } | |
149 | ||
00e2573d CC |
150 | static bool s2mpu02_volatile(struct device *dev, unsigned int reg) |
151 | { | |
152 | switch (reg) { | |
153 | case S2MPU02_REG_INT1M: | |
154 | case S2MPU02_REG_INT2M: | |
155 | case S2MPU02_REG_INT3M: | |
156 | return false; | |
157 | default: | |
158 | return true; | |
159 | } | |
160 | } | |
161 | ||
6b845ba9 MB |
162 | static bool s5m8763_volatile(struct device *dev, unsigned int reg) |
163 | { | |
164 | switch (reg) { | |
165 | case S5M8763_REG_IRQM1: | |
166 | case S5M8763_REG_IRQM2: | |
167 | case S5M8763_REG_IRQM3: | |
168 | case S5M8763_REG_IRQM4: | |
169 | return false; | |
170 | default: | |
171 | return true; | |
172 | } | |
173 | } | |
174 | ||
a30fffb0 | 175 | static const struct regmap_config sec_regmap_config = { |
0f5f7078 SK |
176 | .reg_bits = 8, |
177 | .val_bits = 8, | |
178 | }; | |
179 | ||
ce24991e SK |
180 | static const struct regmap_config s2mpa01_regmap_config = { |
181 | .reg_bits = 8, | |
182 | .val_bits = 8, | |
183 | ||
184 | .max_register = S2MPA01_REG_LDO_OVCB4, | |
185 | .volatile_reg = s2mpa01_volatile, | |
186 | .cache_type = REGCACHE_FLAT, | |
187 | }; | |
188 | ||
a30fffb0 | 189 | static const struct regmap_config s2mps11_regmap_config = { |
25f311fa MB |
190 | .reg_bits = 8, |
191 | .val_bits = 8, | |
192 | ||
193 | .max_register = S2MPS11_REG_L38CTRL, | |
6b845ba9 MB |
194 | .volatile_reg = s2mps11_volatile, |
195 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
196 | }; |
197 | ||
76b9840b CC |
198 | static const struct regmap_config s2mps13_regmap_config = { |
199 | .reg_bits = 8, | |
200 | .val_bits = 8, | |
201 | ||
202 | .max_register = S2MPS13_REG_LDODSCH5, | |
203 | .volatile_reg = s2mps11_volatile, | |
204 | .cache_type = REGCACHE_FLAT, | |
205 | }; | |
206 | ||
dc691966 KK |
207 | static const struct regmap_config s2mps14_regmap_config = { |
208 | .reg_bits = 8, | |
209 | .val_bits = 8, | |
210 | ||
211 | .max_register = S2MPS14_REG_LDODSCH3, | |
212 | .volatile_reg = s2mps11_volatile, | |
213 | .cache_type = REGCACHE_FLAT, | |
214 | }; | |
215 | ||
9e4808d2 TA |
216 | static const struct regmap_config s2mps15_regmap_config = { |
217 | .reg_bits = 8, | |
218 | .val_bits = 8, | |
219 | ||
220 | .max_register = S2MPS15_REG_LDODSCH4, | |
221 | .volatile_reg = s2mps11_volatile, | |
222 | .cache_type = REGCACHE_FLAT, | |
223 | }; | |
224 | ||
00e2573d CC |
225 | static const struct regmap_config s2mpu02_regmap_config = { |
226 | .reg_bits = 8, | |
227 | .val_bits = 8, | |
228 | ||
229 | .max_register = S2MPU02_REG_DVSDATA, | |
230 | .volatile_reg = s2mpu02_volatile, | |
231 | .cache_type = REGCACHE_FLAT, | |
232 | }; | |
233 | ||
a30fffb0 | 234 | static const struct regmap_config s5m8763_regmap_config = { |
25f311fa MB |
235 | .reg_bits = 8, |
236 | .val_bits = 8, | |
237 | ||
238 | .max_register = S5M8763_REG_LBCNFG2, | |
6b845ba9 MB |
239 | .volatile_reg = s5m8763_volatile, |
240 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
241 | }; |
242 | ||
a30fffb0 | 243 | static const struct regmap_config s5m8767_regmap_config = { |
25f311fa MB |
244 | .reg_bits = 8, |
245 | .val_bits = 8, | |
246 | ||
247 | .max_register = S5M8767_REG_LDO28CTRL, | |
6b845ba9 MB |
248 | .volatile_reg = s2mps11_volatile, |
249 | .cache_type = REGCACHE_FLAT, | |
25f311fa | 250 | }; |
26aec009 | 251 | |
c2c9f1fe KK |
252 | static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic) |
253 | { | |
254 | unsigned int val; | |
255 | ||
256 | /* For each device type, the REG_ID is always the first register */ | |
257 | if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val)) | |
258 | dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val); | |
259 | } | |
260 | ||
8a97d428 KK |
261 | static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic) |
262 | { | |
263 | int err; | |
264 | ||
265 | if (sec_pmic->device_type != S2MPS13X) | |
266 | return; | |
267 | ||
268 | if (sec_pmic->pdata->disable_wrstbi) { | |
269 | /* | |
270 | * If WRSTBI pin is pulled down this feature must be disabled | |
271 | * because each Suspend to RAM will trigger buck voltage reset | |
272 | * to default values. | |
273 | */ | |
274 | err = regmap_update_bits(sec_pmic->regmap_pmic, | |
275 | S2MPS13_REG_WRSTBI, | |
276 | S2MPS13_REG_WRSTBI_MASK, 0x0); | |
277 | if (err) | |
278 | dev_warn(sec_pmic->dev, | |
279 | "Cannot initialize WRSTBI config: %d\n", | |
280 | err); | |
281 | } | |
282 | } | |
283 | ||
26aec009 ADK |
284 | #ifdef CONFIG_OF |
285 | /* | |
286 | * Only the common platform data elements for s5m8767 are parsed here from the | |
287 | * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and | |
288 | * others have to parse their own platform data elements from device tree. | |
289 | * | |
290 | * The s5m8767 platform data structure is instantiated here and the drivers for | |
291 | * the sub-modules need not instantiate another instance while parsing their | |
292 | * platform data. | |
293 | */ | |
4720eb47 KK |
294 | static struct sec_platform_data * |
295 | sec_pmic_i2c_parse_dt_pdata(struct device *dev) | |
26aec009 ADK |
296 | { |
297 | struct sec_platform_data *pd; | |
298 | ||
299 | pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); | |
82a00c49 | 300 | if (!pd) |
26aec009 | 301 | return ERR_PTR(-ENOMEM); |
26aec009 ADK |
302 | |
303 | /* | |
304 | * ToDo: the 'wakeup' member in the platform data is more of a linux | |
305 | * specfic information. Hence, there is no binding for that yet and | |
306 | * not parsed here. | |
307 | */ | |
308 | ||
d785334a KK |
309 | pd->manual_poweroff = of_property_read_bool(dev->of_node, |
310 | "samsung,s2mps11-acokb-ground"); | |
8a97d428 KK |
311 | pd->disable_wrstbi = of_property_read_bool(dev->of_node, |
312 | "samsung,s2mps11-wrstbi-ground"); | |
26aec009 ADK |
313 | return pd; |
314 | } | |
315 | #else | |
4720eb47 KK |
316 | static struct sec_platform_data * |
317 | sec_pmic_i2c_parse_dt_pdata(struct device *dev) | |
26aec009 | 318 | { |
005718c0 | 319 | return NULL; |
26aec009 ADK |
320 | } |
321 | #endif | |
322 | ||
8f695de5 | 323 | static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c, |
26aec009 ADK |
324 | const struct i2c_device_id *id) |
325 | { | |
326 | #ifdef CONFIG_OF | |
327 | if (i2c->dev.of_node) { | |
328 | const struct of_device_id *match; | |
b6c1cb4d | 329 | |
26aec009 | 330 | match = of_match_node(sec_dt_match, i2c->dev.of_node); |
8f695de5 | 331 | return (unsigned long)match->data; |
26aec009 ADK |
332 | } |
333 | #endif | |
8f695de5 | 334 | return id->driver_data; |
26aec009 ADK |
335 | } |
336 | ||
63063bfb | 337 | static int sec_pmic_probe(struct i2c_client *i2c, |
0f5f7078 SK |
338 | const struct i2c_device_id *id) |
339 | { | |
334a41ce | 340 | struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev); |
e349c910 | 341 | const struct regmap_config *regmap; |
54e8827d | 342 | const struct mfd_cell *sec_devs; |
63063bfb | 343 | struct sec_pmic_dev *sec_pmic; |
9549b5ff | 344 | unsigned long device_type; |
54e8827d | 345 | int ret, num_sec_devs; |
0f5f7078 | 346 | |
63063bfb | 347 | sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), |
621210e2 | 348 | GFP_KERNEL); |
63063bfb | 349 | if (sec_pmic == NULL) |
0f5f7078 SK |
350 | return -ENOMEM; |
351 | ||
63063bfb SK |
352 | i2c_set_clientdata(i2c, sec_pmic); |
353 | sec_pmic->dev = &i2c->dev; | |
354 | sec_pmic->i2c = i2c; | |
355 | sec_pmic->irq = i2c->irq; | |
9549b5ff | 356 | device_type = sec_i2c_get_driver_data(i2c, id); |
26aec009 ADK |
357 | |
358 | if (sec_pmic->dev->of_node) { | |
359 | pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev); | |
360 | if (IS_ERR(pdata)) { | |
361 | ret = PTR_ERR(pdata); | |
362 | return ret; | |
363 | } | |
9549b5ff | 364 | pdata->device_type = device_type; |
26aec009 | 365 | } |
0f5f7078 | 366 | if (pdata) { |
63063bfb | 367 | sec_pmic->device_type = pdata->device_type; |
63063bfb SK |
368 | sec_pmic->irq_base = pdata->irq_base; |
369 | sec_pmic->wakeup = pdata->wakeup; | |
26aec009 | 370 | sec_pmic->pdata = pdata; |
0f5f7078 SK |
371 | } |
372 | ||
25f311fa | 373 | switch (sec_pmic->device_type) { |
ce24991e SK |
374 | case S2MPA01: |
375 | regmap = &s2mpa01_regmap_config; | |
376 | break; | |
25f311fa MB |
377 | case S2MPS11X: |
378 | regmap = &s2mps11_regmap_config; | |
dc691966 | 379 | break; |
76b9840b CC |
380 | case S2MPS13X: |
381 | regmap = &s2mps13_regmap_config; | |
382 | break; | |
dc691966 KK |
383 | case S2MPS14X: |
384 | regmap = &s2mps14_regmap_config; | |
25f311fa | 385 | break; |
9e4808d2 TA |
386 | case S2MPS15X: |
387 | regmap = &s2mps15_regmap_config; | |
388 | break; | |
25f311fa MB |
389 | case S5M8763X: |
390 | regmap = &s5m8763_regmap_config; | |
391 | break; | |
392 | case S5M8767X: | |
393 | regmap = &s5m8767_regmap_config; | |
394 | break; | |
00e2573d CC |
395 | case S2MPU02: |
396 | regmap = &s2mpu02_regmap_config; | |
397 | break; | |
25f311fa MB |
398 | default: |
399 | regmap = &sec_regmap_config; | |
400 | break; | |
401 | } | |
402 | ||
3e1e4a5f KK |
403 | sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap); |
404 | if (IS_ERR(sec_pmic->regmap_pmic)) { | |
405 | ret = PTR_ERR(sec_pmic->regmap_pmic); | |
0f5f7078 | 406 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
61a2af30 | 407 | ret); |
1092e1c7 | 408 | return ret; |
0f5f7078 SK |
409 | } |
410 | ||
c3ebb30a | 411 | if (pdata && pdata->cfg_pmic_irq) |
0f5f7078 SK |
412 | pdata->cfg_pmic_irq(); |
413 | ||
63063bfb | 414 | sec_irq_init(sec_pmic); |
0f5f7078 | 415 | |
63063bfb | 416 | pm_runtime_set_active(sec_pmic->dev); |
0f5f7078 | 417 | |
63063bfb | 418 | switch (sec_pmic->device_type) { |
88a1cfd6 | 419 | case S5M8751X: |
54e8827d CC |
420 | sec_devs = s5m8751_devs; |
421 | num_sec_devs = ARRAY_SIZE(s5m8751_devs); | |
88a1cfd6 SK |
422 | break; |
423 | case S5M8763X: | |
54e8827d CC |
424 | sec_devs = s5m8763_devs; |
425 | num_sec_devs = ARRAY_SIZE(s5m8763_devs); | |
88a1cfd6 SK |
426 | break; |
427 | case S5M8767X: | |
54e8827d CC |
428 | sec_devs = s5m8767_devs; |
429 | num_sec_devs = ARRAY_SIZE(s5m8767_devs); | |
88a1cfd6 | 430 | break; |
ce24991e | 431 | case S2MPA01: |
54e8827d CC |
432 | sec_devs = s2mpa01_devs; |
433 | num_sec_devs = ARRAY_SIZE(s2mpa01_devs); | |
ce24991e | 434 | break; |
9b6d1343 | 435 | case S2MPS11X: |
54e8827d CC |
436 | sec_devs = s2mps11_devs; |
437 | num_sec_devs = ARRAY_SIZE(s2mps11_devs); | |
9b6d1343 | 438 | break; |
3bc2ee91 CC |
439 | case S2MPS13X: |
440 | sec_devs = s2mps13_devs; | |
441 | num_sec_devs = ARRAY_SIZE(s2mps13_devs); | |
442 | break; | |
dc691966 | 443 | case S2MPS14X: |
54e8827d CC |
444 | sec_devs = s2mps14_devs; |
445 | num_sec_devs = ARRAY_SIZE(s2mps14_devs); | |
446 | break; | |
9e4808d2 TA |
447 | case S2MPS15X: |
448 | sec_devs = s2mps15_devs; | |
449 | num_sec_devs = ARRAY_SIZE(s2mps15_devs); | |
450 | break; | |
54e8827d CC |
451 | case S2MPU02: |
452 | sec_devs = s2mpu02_devs; | |
453 | num_sec_devs = ARRAY_SIZE(s2mpu02_devs); | |
dc691966 | 454 | break; |
88a1cfd6 | 455 | default: |
83761f96 KK |
456 | dev_err(&i2c->dev, "Unsupported device type (%lu)\n", |
457 | sec_pmic->device_type); | |
458 | return -ENODEV; | |
88a1cfd6 | 459 | } |
3dc6f4aa LD |
460 | ret = devm_mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, |
461 | NULL, 0, NULL); | |
15447a46 | 462 | if (ret) |
3dc6f4aa | 463 | return ret; |
0f5f7078 | 464 | |
f6d6daaf | 465 | device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup); |
8a97d428 | 466 | sec_pmic_configure(sec_pmic); |
c2c9f1fe | 467 | sec_pmic_dump_rev(sec_pmic); |
f6d6daaf | 468 | |
0f5f7078 | 469 | return ret; |
0f5f7078 SK |
470 | } |
471 | ||
d785334a KK |
472 | static void sec_pmic_shutdown(struct i2c_client *i2c) |
473 | { | |
474 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
475 | unsigned int reg, mask; | |
476 | ||
477 | if (!sec_pmic->pdata->manual_poweroff) | |
478 | return; | |
479 | ||
480 | switch (sec_pmic->device_type) { | |
481 | case S2MPS11X: | |
482 | reg = S2MPS11_REG_CTRL1; | |
483 | mask = S2MPS11_CTRL1_PWRHOLD_MASK; | |
484 | break; | |
485 | default: | |
486 | /* | |
487 | * Currently only one board with S2MPS11 needs this, so just | |
488 | * ignore the rest. | |
489 | */ | |
490 | dev_warn(sec_pmic->dev, | |
491 | "Unsupported device %lu for manual power off\n", | |
492 | sec_pmic->device_type); | |
493 | return; | |
494 | } | |
495 | ||
496 | regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 0); | |
497 | } | |
498 | ||
8321bbf8 | 499 | #ifdef CONFIG_PM_SLEEP |
f6d6daaf KK |
500 | static int sec_pmic_suspend(struct device *dev) |
501 | { | |
1b5420e1 | 502 | struct i2c_client *i2c = to_i2c_client(dev); |
f6d6daaf KK |
503 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
504 | ||
360d15d6 | 505 | if (device_may_wakeup(dev)) |
f6d6daaf | 506 | enable_irq_wake(sec_pmic->irq); |
360d15d6 KK |
507 | /* |
508 | * PMIC IRQ must be disabled during suspend for RTC alarm | |
509 | * to work properly. | |
510 | * When device is woken up from suspend, an | |
511 | * interrupt occurs before resuming I2C bus controller. | |
512 | * The interrupt is handled by regmap_irq_thread which tries | |
513 | * to read RTC registers. This read fails (I2C is still | |
514 | * suspended) and RTC Alarm interrupt is disabled. | |
515 | */ | |
516 | disable_irq(sec_pmic->irq); | |
f6d6daaf KK |
517 | |
518 | return 0; | |
519 | } | |
520 | ||
521 | static int sec_pmic_resume(struct device *dev) | |
522 | { | |
1b5420e1 | 523 | struct i2c_client *i2c = to_i2c_client(dev); |
f6d6daaf KK |
524 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
525 | ||
360d15d6 | 526 | if (device_may_wakeup(dev)) |
f6d6daaf | 527 | disable_irq_wake(sec_pmic->irq); |
360d15d6 | 528 | enable_irq(sec_pmic->irq); |
f6d6daaf KK |
529 | |
530 | return 0; | |
531 | } | |
8321bbf8 | 532 | #endif /* CONFIG_PM_SLEEP */ |
f6d6daaf KK |
533 | |
534 | static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume); | |
535 | ||
63063bfb SK |
536 | static const struct i2c_device_id sec_pmic_id[] = { |
537 | { "sec_pmic", 0 }, | |
0f5f7078 SK |
538 | { } |
539 | }; | |
63063bfb | 540 | MODULE_DEVICE_TABLE(i2c, sec_pmic_id); |
0f5f7078 | 541 | |
63063bfb | 542 | static struct i2c_driver sec_pmic_driver = { |
0f5f7078 | 543 | .driver = { |
63063bfb | 544 | .name = "sec_pmic", |
f6d6daaf | 545 | .pm = &sec_pmic_pm_ops, |
26aec009 | 546 | .of_match_table = of_match_ptr(sec_dt_match), |
0f5f7078 | 547 | }, |
63063bfb | 548 | .probe = sec_pmic_probe, |
d785334a | 549 | .shutdown = sec_pmic_shutdown, |
63063bfb | 550 | .id_table = sec_pmic_id, |
0f5f7078 SK |
551 | }; |
552 | ||
63063bfb | 553 | static int __init sec_pmic_init(void) |
0f5f7078 | 554 | { |
63063bfb | 555 | return i2c_add_driver(&sec_pmic_driver); |
0f5f7078 SK |
556 | } |
557 | ||
63063bfb | 558 | subsys_initcall(sec_pmic_init); |
0f5f7078 | 559 | |
63063bfb | 560 | static void __exit sec_pmic_exit(void) |
0f5f7078 | 561 | { |
63063bfb | 562 | i2c_del_driver(&sec_pmic_driver); |
0f5f7078 | 563 | } |
63063bfb | 564 | module_exit(sec_pmic_exit); |
0f5f7078 SK |
565 | |
566 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
567 | MODULE_DESCRIPTION("Core support for the S5M MFD"); | |
568 | MODULE_LICENSE("GPL"); |