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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[] = { |
88a1cfd6 SK |
31 | { |
32 | .name = "s5m8751-pmic", | |
33 | }, { | |
34 | .name = "s5m-charger", | |
35 | }, { | |
36 | .name = "s5m8751-codec", | |
37 | }, | |
38 | }; | |
39 | ||
5ac98553 | 40 | static const struct mfd_cell s5m8763_devs[] = { |
88a1cfd6 SK |
41 | { |
42 | .name = "s5m8763-pmic", | |
43 | }, { | |
44 | .name = "s5m-rtc", | |
45 | }, { | |
46 | .name = "s5m-charger", | |
47 | }, | |
48 | }; | |
49 | ||
5ac98553 | 50 | static const struct mfd_cell s5m8767_devs[] = { |
0f5f7078 SK |
51 | { |
52 | .name = "s5m8767-pmic", | |
53 | }, { | |
54 | .name = "s5m-rtc", | |
39fed00f TB |
55 | }, { |
56 | .name = "s5m8767-clk", | |
53c31b34 | 57 | .of_compatible = "samsung,s5m8767-clk", |
39fed00f | 58 | } |
0f5f7078 SK |
59 | }; |
60 | ||
5ac98553 | 61 | static const struct mfd_cell s2mps11_devs[] = { |
9b6d1343 | 62 | { |
2fadbbf0 | 63 | .name = "s2mps11-regulator", |
eea2e596 KK |
64 | }, { |
65 | .name = "s2mps14-rtc", | |
3134bcae YSB |
66 | }, { |
67 | .name = "s2mps11-clk", | |
53c31b34 | 68 | .of_compatible = "samsung,s2mps11-clk", |
3134bcae | 69 | } |
9b6d1343 SK |
70 | }; |
71 | ||
3bc2ee91 | 72 | static const struct mfd_cell s2mps13_devs[] = { |
2fadbbf0 | 73 | { .name = "s2mps13-regulator", }, |
3bc2ee91 CC |
74 | { .name = "s2mps13-rtc", }, |
75 | { | |
76 | .name = "s2mps13-clk", | |
77 | .of_compatible = "samsung,s2mps13-clk", | |
78 | }, | |
79 | }; | |
80 | ||
dc691966 KK |
81 | static const struct mfd_cell s2mps14_devs[] = { |
82 | { | |
2fadbbf0 | 83 | .name = "s2mps14-regulator", |
dc691966 KK |
84 | }, { |
85 | .name = "s2mps14-rtc", | |
86 | }, { | |
87 | .name = "s2mps14-clk", | |
53c31b34 | 88 | .of_compatible = "samsung,s2mps14-clk", |
dc691966 KK |
89 | } |
90 | }; | |
91 | ||
9e4808d2 TA |
92 | static const struct mfd_cell s2mps15_devs[] = { |
93 | { | |
94 | .name = "s2mps15-regulator", | |
95 | }, { | |
96 | .name = "s2mps15-rtc", | |
97 | }, { | |
98 | .name = "s2mps13-clk", | |
99 | .of_compatible = "samsung,s2mps13-clk", | |
100 | }, | |
101 | }; | |
102 | ||
ce24991e SK |
103 | static const struct mfd_cell s2mpa01_devs[] = { |
104 | { | |
105 | .name = "s2mpa01-pmic", | |
106 | }, | |
107 | }; | |
108 | ||
54e8827d | 109 | static const struct mfd_cell s2mpu02_devs[] = { |
54e8827d | 110 | { |
2fadbbf0 | 111 | .name = "s2mpu02-regulator", |
644a3746 | 112 | }, |
54e8827d CC |
113 | }; |
114 | ||
26aec009 | 115 | #ifdef CONFIG_OF |
df20b7c5 | 116 | static const struct of_device_id sec_dt_match[] = { |
26aec009 ADK |
117 | { .compatible = "samsung,s5m8767-pmic", |
118 | .data = (void *)S5M8767X, | |
ce24991e SK |
119 | }, { |
120 | .compatible = "samsung,s2mps11-pmic", | |
aa32acad | 121 | .data = (void *)S2MPS11X, |
3bc2ee91 CC |
122 | }, { |
123 | .compatible = "samsung,s2mps13-pmic", | |
124 | .data = (void *)S2MPS13X, | |
ce24991e SK |
125 | }, { |
126 | .compatible = "samsung,s2mps14-pmic", | |
dc691966 | 127 | .data = (void *)S2MPS14X, |
9e4808d2 TA |
128 | }, { |
129 | .compatible = "samsung,s2mps15-pmic", | |
130 | .data = (void *)S2MPS15X, | |
ce24991e SK |
131 | }, { |
132 | .compatible = "samsung,s2mpa01-pmic", | |
133 | .data = (void *)S2MPA01, | |
54e8827d CC |
134 | }, { |
135 | .compatible = "samsung,s2mpu02-pmic", | |
136 | .data = (void *)S2MPU02, | |
ce24991e SK |
137 | }, { |
138 | /* Sentinel */ | |
dc691966 | 139 | }, |
26aec009 | 140 | }; |
fe8166c9 | 141 | MODULE_DEVICE_TABLE(of, sec_dt_match); |
26aec009 ADK |
142 | #endif |
143 | ||
ce24991e SK |
144 | static bool s2mpa01_volatile(struct device *dev, unsigned int reg) |
145 | { | |
146 | switch (reg) { | |
147 | case S2MPA01_REG_INT1M: | |
148 | case S2MPA01_REG_INT2M: | |
149 | case S2MPA01_REG_INT3M: | |
150 | return false; | |
151 | default: | |
152 | return true; | |
153 | } | |
154 | } | |
155 | ||
6b845ba9 MB |
156 | static bool s2mps11_volatile(struct device *dev, unsigned int reg) |
157 | { | |
158 | switch (reg) { | |
159 | case S2MPS11_REG_INT1M: | |
160 | case S2MPS11_REG_INT2M: | |
161 | case S2MPS11_REG_INT3M: | |
162 | return false; | |
163 | default: | |
164 | return true; | |
165 | } | |
166 | } | |
167 | ||
00e2573d CC |
168 | static bool s2mpu02_volatile(struct device *dev, unsigned int reg) |
169 | { | |
170 | switch (reg) { | |
171 | case S2MPU02_REG_INT1M: | |
172 | case S2MPU02_REG_INT2M: | |
173 | case S2MPU02_REG_INT3M: | |
174 | return false; | |
175 | default: | |
176 | return true; | |
177 | } | |
178 | } | |
179 | ||
6b845ba9 MB |
180 | static bool s5m8763_volatile(struct device *dev, unsigned int reg) |
181 | { | |
182 | switch (reg) { | |
183 | case S5M8763_REG_IRQM1: | |
184 | case S5M8763_REG_IRQM2: | |
185 | case S5M8763_REG_IRQM3: | |
186 | case S5M8763_REG_IRQM4: | |
187 | return false; | |
188 | default: | |
189 | return true; | |
190 | } | |
191 | } | |
192 | ||
a30fffb0 | 193 | static const struct regmap_config sec_regmap_config = { |
0f5f7078 SK |
194 | .reg_bits = 8, |
195 | .val_bits = 8, | |
196 | }; | |
197 | ||
ce24991e SK |
198 | static const struct regmap_config s2mpa01_regmap_config = { |
199 | .reg_bits = 8, | |
200 | .val_bits = 8, | |
201 | ||
202 | .max_register = S2MPA01_REG_LDO_OVCB4, | |
203 | .volatile_reg = s2mpa01_volatile, | |
204 | .cache_type = REGCACHE_FLAT, | |
205 | }; | |
206 | ||
a30fffb0 | 207 | static const struct regmap_config s2mps11_regmap_config = { |
25f311fa MB |
208 | .reg_bits = 8, |
209 | .val_bits = 8, | |
210 | ||
211 | .max_register = S2MPS11_REG_L38CTRL, | |
6b845ba9 MB |
212 | .volatile_reg = s2mps11_volatile, |
213 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
214 | }; |
215 | ||
76b9840b CC |
216 | static const struct regmap_config s2mps13_regmap_config = { |
217 | .reg_bits = 8, | |
218 | .val_bits = 8, | |
219 | ||
220 | .max_register = S2MPS13_REG_LDODSCH5, | |
221 | .volatile_reg = s2mps11_volatile, | |
222 | .cache_type = REGCACHE_FLAT, | |
223 | }; | |
224 | ||
dc691966 KK |
225 | static const struct regmap_config s2mps14_regmap_config = { |
226 | .reg_bits = 8, | |
227 | .val_bits = 8, | |
228 | ||
229 | .max_register = S2MPS14_REG_LDODSCH3, | |
230 | .volatile_reg = s2mps11_volatile, | |
231 | .cache_type = REGCACHE_FLAT, | |
232 | }; | |
233 | ||
9e4808d2 TA |
234 | static const struct regmap_config s2mps15_regmap_config = { |
235 | .reg_bits = 8, | |
236 | .val_bits = 8, | |
237 | ||
238 | .max_register = S2MPS15_REG_LDODSCH4, | |
239 | .volatile_reg = s2mps11_volatile, | |
240 | .cache_type = REGCACHE_FLAT, | |
241 | }; | |
242 | ||
00e2573d CC |
243 | static const struct regmap_config s2mpu02_regmap_config = { |
244 | .reg_bits = 8, | |
245 | .val_bits = 8, | |
246 | ||
247 | .max_register = S2MPU02_REG_DVSDATA, | |
248 | .volatile_reg = s2mpu02_volatile, | |
249 | .cache_type = REGCACHE_FLAT, | |
250 | }; | |
251 | ||
a30fffb0 | 252 | static const struct regmap_config s5m8763_regmap_config = { |
25f311fa MB |
253 | .reg_bits = 8, |
254 | .val_bits = 8, | |
255 | ||
256 | .max_register = S5M8763_REG_LBCNFG2, | |
6b845ba9 MB |
257 | .volatile_reg = s5m8763_volatile, |
258 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
259 | }; |
260 | ||
a30fffb0 | 261 | static const struct regmap_config s5m8767_regmap_config = { |
25f311fa MB |
262 | .reg_bits = 8, |
263 | .val_bits = 8, | |
264 | ||
265 | .max_register = S5M8767_REG_LDO28CTRL, | |
6b845ba9 MB |
266 | .volatile_reg = s2mps11_volatile, |
267 | .cache_type = REGCACHE_FLAT, | |
25f311fa | 268 | }; |
26aec009 | 269 | |
c2c9f1fe KK |
270 | static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic) |
271 | { | |
272 | unsigned int val; | |
273 | ||
274 | /* For each device type, the REG_ID is always the first register */ | |
275 | if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val)) | |
276 | dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val); | |
277 | } | |
278 | ||
8a97d428 KK |
279 | static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic) |
280 | { | |
281 | int err; | |
282 | ||
283 | if (sec_pmic->device_type != S2MPS13X) | |
284 | return; | |
285 | ||
286 | if (sec_pmic->pdata->disable_wrstbi) { | |
287 | /* | |
288 | * If WRSTBI pin is pulled down this feature must be disabled | |
289 | * because each Suspend to RAM will trigger buck voltage reset | |
290 | * to default values. | |
291 | */ | |
292 | err = regmap_update_bits(sec_pmic->regmap_pmic, | |
293 | S2MPS13_REG_WRSTBI, | |
294 | S2MPS13_REG_WRSTBI_MASK, 0x0); | |
295 | if (err) | |
296 | dev_warn(sec_pmic->dev, | |
297 | "Cannot initialize WRSTBI config: %d\n", | |
298 | err); | |
299 | } | |
300 | } | |
301 | ||
26aec009 ADK |
302 | #ifdef CONFIG_OF |
303 | /* | |
304 | * Only the common platform data elements for s5m8767 are parsed here from the | |
305 | * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and | |
306 | * others have to parse their own platform data elements from device tree. | |
307 | * | |
308 | * The s5m8767 platform data structure is instantiated here and the drivers for | |
309 | * the sub-modules need not instantiate another instance while parsing their | |
310 | * platform data. | |
311 | */ | |
312 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( | |
313 | struct device *dev) | |
314 | { | |
315 | struct sec_platform_data *pd; | |
316 | ||
317 | pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); | |
82a00c49 | 318 | if (!pd) |
26aec009 | 319 | return ERR_PTR(-ENOMEM); |
26aec009 ADK |
320 | |
321 | /* | |
322 | * ToDo: the 'wakeup' member in the platform data is more of a linux | |
323 | * specfic information. Hence, there is no binding for that yet and | |
324 | * not parsed here. | |
325 | */ | |
326 | ||
d785334a KK |
327 | pd->manual_poweroff = of_property_read_bool(dev->of_node, |
328 | "samsung,s2mps11-acokb-ground"); | |
8a97d428 KK |
329 | pd->disable_wrstbi = of_property_read_bool(dev->of_node, |
330 | "samsung,s2mps11-wrstbi-ground"); | |
26aec009 ADK |
331 | return pd; |
332 | } | |
333 | #else | |
197bf856 | 334 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( |
26aec009 ADK |
335 | struct device *dev) |
336 | { | |
005718c0 | 337 | return NULL; |
26aec009 ADK |
338 | } |
339 | #endif | |
340 | ||
8f695de5 | 341 | static inline unsigned long sec_i2c_get_driver_data(struct i2c_client *i2c, |
26aec009 ADK |
342 | const struct i2c_device_id *id) |
343 | { | |
344 | #ifdef CONFIG_OF | |
345 | if (i2c->dev.of_node) { | |
346 | const struct of_device_id *match; | |
b6c1cb4d | 347 | |
26aec009 | 348 | match = of_match_node(sec_dt_match, i2c->dev.of_node); |
8f695de5 | 349 | return (unsigned long)match->data; |
26aec009 ADK |
350 | } |
351 | #endif | |
8f695de5 | 352 | return id->driver_data; |
26aec009 ADK |
353 | } |
354 | ||
63063bfb | 355 | static int sec_pmic_probe(struct i2c_client *i2c, |
0f5f7078 SK |
356 | const struct i2c_device_id *id) |
357 | { | |
334a41ce | 358 | struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev); |
e349c910 | 359 | const struct regmap_config *regmap; |
54e8827d | 360 | const struct mfd_cell *sec_devs; |
63063bfb | 361 | struct sec_pmic_dev *sec_pmic; |
9549b5ff | 362 | unsigned long device_type; |
54e8827d | 363 | int ret, num_sec_devs; |
0f5f7078 | 364 | |
63063bfb | 365 | sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), |
621210e2 | 366 | GFP_KERNEL); |
63063bfb | 367 | if (sec_pmic == NULL) |
0f5f7078 SK |
368 | return -ENOMEM; |
369 | ||
63063bfb SK |
370 | i2c_set_clientdata(i2c, sec_pmic); |
371 | sec_pmic->dev = &i2c->dev; | |
372 | sec_pmic->i2c = i2c; | |
373 | sec_pmic->irq = i2c->irq; | |
9549b5ff | 374 | device_type = sec_i2c_get_driver_data(i2c, id); |
26aec009 ADK |
375 | |
376 | if (sec_pmic->dev->of_node) { | |
377 | pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev); | |
378 | if (IS_ERR(pdata)) { | |
379 | ret = PTR_ERR(pdata); | |
380 | return ret; | |
381 | } | |
9549b5ff | 382 | pdata->device_type = device_type; |
26aec009 | 383 | } |
0f5f7078 | 384 | if (pdata) { |
63063bfb | 385 | sec_pmic->device_type = pdata->device_type; |
63063bfb SK |
386 | sec_pmic->irq_base = pdata->irq_base; |
387 | sec_pmic->wakeup = pdata->wakeup; | |
26aec009 | 388 | sec_pmic->pdata = pdata; |
0f5f7078 SK |
389 | } |
390 | ||
25f311fa | 391 | switch (sec_pmic->device_type) { |
ce24991e SK |
392 | case S2MPA01: |
393 | regmap = &s2mpa01_regmap_config; | |
394 | break; | |
25f311fa MB |
395 | case S2MPS11X: |
396 | regmap = &s2mps11_regmap_config; | |
dc691966 | 397 | break; |
76b9840b CC |
398 | case S2MPS13X: |
399 | regmap = &s2mps13_regmap_config; | |
400 | break; | |
dc691966 KK |
401 | case S2MPS14X: |
402 | regmap = &s2mps14_regmap_config; | |
25f311fa | 403 | break; |
9e4808d2 TA |
404 | case S2MPS15X: |
405 | regmap = &s2mps15_regmap_config; | |
406 | break; | |
25f311fa MB |
407 | case S5M8763X: |
408 | regmap = &s5m8763_regmap_config; | |
409 | break; | |
410 | case S5M8767X: | |
411 | regmap = &s5m8767_regmap_config; | |
412 | break; | |
00e2573d CC |
413 | case S2MPU02: |
414 | regmap = &s2mpu02_regmap_config; | |
415 | break; | |
25f311fa MB |
416 | default: |
417 | regmap = &sec_regmap_config; | |
418 | break; | |
419 | } | |
420 | ||
3e1e4a5f KK |
421 | sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap); |
422 | if (IS_ERR(sec_pmic->regmap_pmic)) { | |
423 | ret = PTR_ERR(sec_pmic->regmap_pmic); | |
0f5f7078 | 424 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
61a2af30 | 425 | ret); |
1092e1c7 | 426 | return ret; |
0f5f7078 SK |
427 | } |
428 | ||
c3ebb30a | 429 | if (pdata && pdata->cfg_pmic_irq) |
0f5f7078 SK |
430 | pdata->cfg_pmic_irq(); |
431 | ||
63063bfb | 432 | sec_irq_init(sec_pmic); |
0f5f7078 | 433 | |
63063bfb | 434 | pm_runtime_set_active(sec_pmic->dev); |
0f5f7078 | 435 | |
63063bfb | 436 | switch (sec_pmic->device_type) { |
88a1cfd6 | 437 | case S5M8751X: |
54e8827d CC |
438 | sec_devs = s5m8751_devs; |
439 | num_sec_devs = ARRAY_SIZE(s5m8751_devs); | |
88a1cfd6 SK |
440 | break; |
441 | case S5M8763X: | |
54e8827d CC |
442 | sec_devs = s5m8763_devs; |
443 | num_sec_devs = ARRAY_SIZE(s5m8763_devs); | |
88a1cfd6 SK |
444 | break; |
445 | case S5M8767X: | |
54e8827d CC |
446 | sec_devs = s5m8767_devs; |
447 | num_sec_devs = ARRAY_SIZE(s5m8767_devs); | |
88a1cfd6 | 448 | break; |
ce24991e | 449 | case S2MPA01: |
54e8827d CC |
450 | sec_devs = s2mpa01_devs; |
451 | num_sec_devs = ARRAY_SIZE(s2mpa01_devs); | |
ce24991e | 452 | break; |
9b6d1343 | 453 | case S2MPS11X: |
54e8827d CC |
454 | sec_devs = s2mps11_devs; |
455 | num_sec_devs = ARRAY_SIZE(s2mps11_devs); | |
9b6d1343 | 456 | break; |
3bc2ee91 CC |
457 | case S2MPS13X: |
458 | sec_devs = s2mps13_devs; | |
459 | num_sec_devs = ARRAY_SIZE(s2mps13_devs); | |
460 | break; | |
dc691966 | 461 | case S2MPS14X: |
54e8827d CC |
462 | sec_devs = s2mps14_devs; |
463 | num_sec_devs = ARRAY_SIZE(s2mps14_devs); | |
464 | break; | |
9e4808d2 TA |
465 | case S2MPS15X: |
466 | sec_devs = s2mps15_devs; | |
467 | num_sec_devs = ARRAY_SIZE(s2mps15_devs); | |
468 | break; | |
54e8827d CC |
469 | case S2MPU02: |
470 | sec_devs = s2mpu02_devs; | |
471 | num_sec_devs = ARRAY_SIZE(s2mpu02_devs); | |
dc691966 | 472 | break; |
88a1cfd6 SK |
473 | default: |
474 | /* If this happens the probe function is problem */ | |
475 | BUG(); | |
476 | } | |
3dc6f4aa LD |
477 | ret = devm_mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, |
478 | NULL, 0, NULL); | |
15447a46 | 479 | if (ret) |
3dc6f4aa | 480 | return ret; |
0f5f7078 | 481 | |
f6d6daaf | 482 | device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup); |
8a97d428 | 483 | sec_pmic_configure(sec_pmic); |
c2c9f1fe | 484 | sec_pmic_dump_rev(sec_pmic); |
f6d6daaf | 485 | |
0f5f7078 | 486 | return ret; |
0f5f7078 SK |
487 | } |
488 | ||
d785334a KK |
489 | static void sec_pmic_shutdown(struct i2c_client *i2c) |
490 | { | |
491 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
492 | unsigned int reg, mask; | |
493 | ||
494 | if (!sec_pmic->pdata->manual_poweroff) | |
495 | return; | |
496 | ||
497 | switch (sec_pmic->device_type) { | |
498 | case S2MPS11X: | |
499 | reg = S2MPS11_REG_CTRL1; | |
500 | mask = S2MPS11_CTRL1_PWRHOLD_MASK; | |
501 | break; | |
502 | default: | |
503 | /* | |
504 | * Currently only one board with S2MPS11 needs this, so just | |
505 | * ignore the rest. | |
506 | */ | |
507 | dev_warn(sec_pmic->dev, | |
508 | "Unsupported device %lu for manual power off\n", | |
509 | sec_pmic->device_type); | |
510 | return; | |
511 | } | |
512 | ||
513 | regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 0); | |
514 | } | |
515 | ||
8321bbf8 | 516 | #ifdef CONFIG_PM_SLEEP |
f6d6daaf KK |
517 | static int sec_pmic_suspend(struct device *dev) |
518 | { | |
1b5420e1 | 519 | struct i2c_client *i2c = to_i2c_client(dev); |
f6d6daaf KK |
520 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
521 | ||
360d15d6 | 522 | if (device_may_wakeup(dev)) |
f6d6daaf | 523 | enable_irq_wake(sec_pmic->irq); |
360d15d6 KK |
524 | /* |
525 | * PMIC IRQ must be disabled during suspend for RTC alarm | |
526 | * to work properly. | |
527 | * When device is woken up from suspend, an | |
528 | * interrupt occurs before resuming I2C bus controller. | |
529 | * The interrupt is handled by regmap_irq_thread which tries | |
530 | * to read RTC registers. This read fails (I2C is still | |
531 | * suspended) and RTC Alarm interrupt is disabled. | |
532 | */ | |
533 | disable_irq(sec_pmic->irq); | |
f6d6daaf KK |
534 | |
535 | return 0; | |
536 | } | |
537 | ||
538 | static int sec_pmic_resume(struct device *dev) | |
539 | { | |
1b5420e1 | 540 | struct i2c_client *i2c = to_i2c_client(dev); |
f6d6daaf KK |
541 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
542 | ||
360d15d6 | 543 | if (device_may_wakeup(dev)) |
f6d6daaf | 544 | disable_irq_wake(sec_pmic->irq); |
360d15d6 | 545 | enable_irq(sec_pmic->irq); |
f6d6daaf KK |
546 | |
547 | return 0; | |
548 | } | |
8321bbf8 | 549 | #endif /* CONFIG_PM_SLEEP */ |
f6d6daaf KK |
550 | |
551 | static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume); | |
552 | ||
63063bfb SK |
553 | static const struct i2c_device_id sec_pmic_id[] = { |
554 | { "sec_pmic", 0 }, | |
0f5f7078 SK |
555 | { } |
556 | }; | |
63063bfb | 557 | MODULE_DEVICE_TABLE(i2c, sec_pmic_id); |
0f5f7078 | 558 | |
63063bfb | 559 | static struct i2c_driver sec_pmic_driver = { |
0f5f7078 | 560 | .driver = { |
63063bfb | 561 | .name = "sec_pmic", |
f6d6daaf | 562 | .pm = &sec_pmic_pm_ops, |
26aec009 | 563 | .of_match_table = of_match_ptr(sec_dt_match), |
0f5f7078 | 564 | }, |
63063bfb | 565 | .probe = sec_pmic_probe, |
d785334a | 566 | .shutdown = sec_pmic_shutdown, |
63063bfb | 567 | .id_table = sec_pmic_id, |
0f5f7078 SK |
568 | }; |
569 | ||
63063bfb | 570 | static int __init sec_pmic_init(void) |
0f5f7078 | 571 | { |
63063bfb | 572 | return i2c_add_driver(&sec_pmic_driver); |
0f5f7078 SK |
573 | } |
574 | ||
63063bfb | 575 | subsys_initcall(sec_pmic_init); |
0f5f7078 | 576 | |
63063bfb | 577 | static void __exit sec_pmic_exit(void) |
0f5f7078 | 578 | { |
63063bfb | 579 | i2c_del_driver(&sec_pmic_driver); |
0f5f7078 | 580 | } |
63063bfb | 581 | module_exit(sec_pmic_exit); |
0f5f7078 SK |
582 | |
583 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
584 | MODULE_DESCRIPTION("Core support for the S5M MFD"); | |
585 | MODULE_LICENSE("GPL"); |