Commit | Line | Data |
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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 MB |
29 | #include <linux/mfd/samsung/s2mps11.h> |
30 | #include <linux/mfd/samsung/s5m8763.h> | |
31 | #include <linux/mfd/samsung/s5m8767.h> | |
0f5f7078 SK |
32 | #include <linux/regmap.h> |
33 | ||
5ac98553 | 34 | static const struct mfd_cell s5m8751_devs[] = { |
88a1cfd6 SK |
35 | { |
36 | .name = "s5m8751-pmic", | |
37 | }, { | |
38 | .name = "s5m-charger", | |
39 | }, { | |
40 | .name = "s5m8751-codec", | |
41 | }, | |
42 | }; | |
43 | ||
5ac98553 | 44 | static const struct mfd_cell s5m8763_devs[] = { |
88a1cfd6 SK |
45 | { |
46 | .name = "s5m8763-pmic", | |
47 | }, { | |
48 | .name = "s5m-rtc", | |
49 | }, { | |
50 | .name = "s5m-charger", | |
51 | }, | |
52 | }; | |
53 | ||
5ac98553 | 54 | static const struct mfd_cell s5m8767_devs[] = { |
0f5f7078 SK |
55 | { |
56 | .name = "s5m8767-pmic", | |
57 | }, { | |
58 | .name = "s5m-rtc", | |
39fed00f TB |
59 | }, { |
60 | .name = "s5m8767-clk", | |
61 | } | |
0f5f7078 SK |
62 | }; |
63 | ||
5ac98553 | 64 | static const struct mfd_cell s2mps11_devs[] = { |
9b6d1343 SK |
65 | { |
66 | .name = "s2mps11-pmic", | |
3134bcae YSB |
67 | }, { |
68 | .name = "s2mps11-clk", | |
69 | } | |
9b6d1343 SK |
70 | }; |
71 | ||
26aec009 ADK |
72 | #ifdef CONFIG_OF |
73 | static struct of_device_id sec_dt_match[] = { | |
74 | { .compatible = "samsung,s5m8767-pmic", | |
75 | .data = (void *)S5M8767X, | |
76 | }, | |
aa32acad YSB |
77 | { .compatible = "samsung,s2mps11-pmic", |
78 | .data = (void *)S2MPS11X, | |
79 | }, | |
26aec009 ADK |
80 | {}, |
81 | }; | |
82 | #endif | |
83 | ||
6b845ba9 MB |
84 | static bool s2mps11_volatile(struct device *dev, unsigned int reg) |
85 | { | |
86 | switch (reg) { | |
87 | case S2MPS11_REG_INT1M: | |
88 | case S2MPS11_REG_INT2M: | |
89 | case S2MPS11_REG_INT3M: | |
90 | return false; | |
91 | default: | |
92 | return true; | |
93 | } | |
94 | } | |
95 | ||
96 | static bool s5m8763_volatile(struct device *dev, unsigned int reg) | |
97 | { | |
98 | switch (reg) { | |
99 | case S5M8763_REG_IRQM1: | |
100 | case S5M8763_REG_IRQM2: | |
101 | case S5M8763_REG_IRQM3: | |
102 | case S5M8763_REG_IRQM4: | |
103 | return false; | |
104 | default: | |
105 | return true; | |
106 | } | |
107 | } | |
108 | ||
a30fffb0 | 109 | static const struct regmap_config sec_regmap_config = { |
0f5f7078 SK |
110 | .reg_bits = 8, |
111 | .val_bits = 8, | |
112 | }; | |
113 | ||
a30fffb0 | 114 | static const struct regmap_config s2mps11_regmap_config = { |
25f311fa MB |
115 | .reg_bits = 8, |
116 | .val_bits = 8, | |
117 | ||
118 | .max_register = S2MPS11_REG_L38CTRL, | |
6b845ba9 MB |
119 | .volatile_reg = s2mps11_volatile, |
120 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
121 | }; |
122 | ||
a30fffb0 | 123 | static const struct regmap_config s5m8763_regmap_config = { |
25f311fa MB |
124 | .reg_bits = 8, |
125 | .val_bits = 8, | |
126 | ||
127 | .max_register = S5M8763_REG_LBCNFG2, | |
6b845ba9 MB |
128 | .volatile_reg = s5m8763_volatile, |
129 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
130 | }; |
131 | ||
a30fffb0 | 132 | static const struct regmap_config s5m8767_regmap_config = { |
25f311fa MB |
133 | .reg_bits = 8, |
134 | .val_bits = 8, | |
135 | ||
136 | .max_register = S5M8767_REG_LDO28CTRL, | |
6b845ba9 MB |
137 | .volatile_reg = s2mps11_volatile, |
138 | .cache_type = REGCACHE_FLAT, | |
25f311fa | 139 | }; |
26aec009 | 140 | |
3e1e4a5f KK |
141 | static const struct regmap_config sec_rtc_regmap_config = { |
142 | .reg_bits = 8, | |
143 | .val_bits = 8, | |
144 | }; | |
145 | ||
26aec009 ADK |
146 | #ifdef CONFIG_OF |
147 | /* | |
148 | * Only the common platform data elements for s5m8767 are parsed here from the | |
149 | * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and | |
150 | * others have to parse their own platform data elements from device tree. | |
151 | * | |
152 | * The s5m8767 platform data structure is instantiated here and the drivers for | |
153 | * the sub-modules need not instantiate another instance while parsing their | |
154 | * platform data. | |
155 | */ | |
156 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( | |
157 | struct device *dev) | |
158 | { | |
159 | struct sec_platform_data *pd; | |
160 | ||
161 | pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); | |
162 | if (!pd) { | |
163 | dev_err(dev, "could not allocate memory for pdata\n"); | |
164 | return ERR_PTR(-ENOMEM); | |
165 | } | |
166 | ||
167 | /* | |
168 | * ToDo: the 'wakeup' member in the platform data is more of a linux | |
169 | * specfic information. Hence, there is no binding for that yet and | |
170 | * not parsed here. | |
171 | */ | |
172 | ||
173 | return pd; | |
174 | } | |
175 | #else | |
197bf856 | 176 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( |
26aec009 ADK |
177 | struct device *dev) |
178 | { | |
005718c0 | 179 | return NULL; |
26aec009 ADK |
180 | } |
181 | #endif | |
182 | ||
183 | static inline int sec_i2c_get_driver_data(struct i2c_client *i2c, | |
184 | const struct i2c_device_id *id) | |
185 | { | |
186 | #ifdef CONFIG_OF | |
187 | if (i2c->dev.of_node) { | |
188 | const struct of_device_id *match; | |
189 | match = of_match_node(sec_dt_match, i2c->dev.of_node); | |
190 | return (int)match->data; | |
191 | } | |
192 | #endif | |
193 | return (int)id->driver_data; | |
194 | } | |
195 | ||
63063bfb | 196 | static int sec_pmic_probe(struct i2c_client *i2c, |
0f5f7078 SK |
197 | const struct i2c_device_id *id) |
198 | { | |
334a41ce | 199 | struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev); |
25f311fa | 200 | const struct regmap_config *regmap; |
63063bfb | 201 | struct sec_pmic_dev *sec_pmic; |
61a2af30 | 202 | int ret; |
0f5f7078 | 203 | |
63063bfb | 204 | sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), |
621210e2 | 205 | GFP_KERNEL); |
63063bfb | 206 | if (sec_pmic == NULL) |
0f5f7078 SK |
207 | return -ENOMEM; |
208 | ||
63063bfb SK |
209 | i2c_set_clientdata(i2c, sec_pmic); |
210 | sec_pmic->dev = &i2c->dev; | |
211 | sec_pmic->i2c = i2c; | |
212 | sec_pmic->irq = i2c->irq; | |
26aec009 ADK |
213 | sec_pmic->type = sec_i2c_get_driver_data(i2c, id); |
214 | ||
215 | if (sec_pmic->dev->of_node) { | |
216 | pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev); | |
217 | if (IS_ERR(pdata)) { | |
218 | ret = PTR_ERR(pdata); | |
219 | return ret; | |
220 | } | |
221 | pdata->device_type = sec_pmic->type; | |
222 | } | |
0f5f7078 | 223 | if (pdata) { |
63063bfb SK |
224 | sec_pmic->device_type = pdata->device_type; |
225 | sec_pmic->ono = pdata->ono; | |
226 | sec_pmic->irq_base = pdata->irq_base; | |
227 | sec_pmic->wakeup = pdata->wakeup; | |
26aec009 | 228 | sec_pmic->pdata = pdata; |
0f5f7078 SK |
229 | } |
230 | ||
25f311fa MB |
231 | switch (sec_pmic->device_type) { |
232 | case S2MPS11X: | |
233 | regmap = &s2mps11_regmap_config; | |
234 | break; | |
235 | case S5M8763X: | |
236 | regmap = &s5m8763_regmap_config; | |
237 | break; | |
238 | case S5M8767X: | |
239 | regmap = &s5m8767_regmap_config; | |
240 | break; | |
241 | default: | |
242 | regmap = &sec_regmap_config; | |
243 | break; | |
244 | } | |
245 | ||
3e1e4a5f KK |
246 | sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap); |
247 | if (IS_ERR(sec_pmic->regmap_pmic)) { | |
248 | ret = PTR_ERR(sec_pmic->regmap_pmic); | |
0f5f7078 | 249 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
61a2af30 | 250 | ret); |
1092e1c7 | 251 | return ret; |
0f5f7078 SK |
252 | } |
253 | ||
63063bfb SK |
254 | sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR); |
255 | i2c_set_clientdata(sec_pmic->rtc, sec_pmic); | |
0f5f7078 | 256 | |
3e1e4a5f KK |
257 | sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc, |
258 | &sec_rtc_regmap_config); | |
259 | if (IS_ERR(sec_pmic->regmap_rtc)) { | |
260 | ret = PTR_ERR(sec_pmic->regmap_rtc); | |
261 | dev_err(&i2c->dev, "Failed to allocate RTC register map: %d\n", | |
262 | ret); | |
263 | return ret; | |
264 | } | |
265 | ||
c3ebb30a | 266 | if (pdata && pdata->cfg_pmic_irq) |
0f5f7078 SK |
267 | pdata->cfg_pmic_irq(); |
268 | ||
63063bfb | 269 | sec_irq_init(sec_pmic); |
0f5f7078 | 270 | |
63063bfb | 271 | pm_runtime_set_active(sec_pmic->dev); |
0f5f7078 | 272 | |
63063bfb | 273 | switch (sec_pmic->device_type) { |
88a1cfd6 | 274 | case S5M8751X: |
63063bfb | 275 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs, |
0848c94f | 276 | ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL); |
88a1cfd6 SK |
277 | break; |
278 | case S5M8763X: | |
63063bfb | 279 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs, |
0848c94f | 280 | ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL); |
88a1cfd6 SK |
281 | break; |
282 | case S5M8767X: | |
63063bfb | 283 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs, |
0848c94f | 284 | ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL); |
88a1cfd6 | 285 | break; |
9b6d1343 SK |
286 | case S2MPS11X: |
287 | ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs, | |
0848c94f | 288 | ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL); |
9b6d1343 | 289 | break; |
88a1cfd6 SK |
290 | default: |
291 | /* If this happens the probe function is problem */ | |
292 | BUG(); | |
293 | } | |
0f5f7078 | 294 | |
15447a46 | 295 | if (ret) |
0f5f7078 SK |
296 | goto err; |
297 | ||
f6d6daaf KK |
298 | device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup); |
299 | ||
0f5f7078 SK |
300 | return ret; |
301 | ||
302 | err: | |
63063bfb SK |
303 | sec_irq_exit(sec_pmic); |
304 | i2c_unregister_device(sec_pmic->rtc); | |
0f5f7078 SK |
305 | return ret; |
306 | } | |
307 | ||
63063bfb | 308 | static int sec_pmic_remove(struct i2c_client *i2c) |
0f5f7078 | 309 | { |
63063bfb | 310 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
0f5f7078 | 311 | |
63063bfb SK |
312 | mfd_remove_devices(sec_pmic->dev); |
313 | sec_irq_exit(sec_pmic); | |
314 | i2c_unregister_device(sec_pmic->rtc); | |
0f5f7078 SK |
315 | return 0; |
316 | } | |
317 | ||
8321bbf8 | 318 | #ifdef CONFIG_PM_SLEEP |
f6d6daaf KK |
319 | static int sec_pmic_suspend(struct device *dev) |
320 | { | |
321 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
322 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
323 | ||
324 | if (device_may_wakeup(dev)) { | |
325 | enable_irq_wake(sec_pmic->irq); | |
326 | /* | |
327 | * PMIC IRQ must be disabled during suspend for RTC alarm | |
328 | * to work properly. | |
329 | * When device is woken up from suspend by RTC Alarm, an | |
330 | * interrupt occurs before resuming I2C bus controller. | |
331 | * The interrupt is handled by regmap_irq_thread which tries | |
332 | * to read RTC registers. This read fails (I2C is still | |
333 | * suspended) and RTC Alarm interrupt is disabled. | |
334 | */ | |
335 | disable_irq(sec_pmic->irq); | |
336 | } | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
341 | static int sec_pmic_resume(struct device *dev) | |
342 | { | |
343 | struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); | |
344 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); | |
345 | ||
346 | if (device_may_wakeup(dev)) { | |
347 | disable_irq_wake(sec_pmic->irq); | |
348 | enable_irq(sec_pmic->irq); | |
349 | } | |
350 | ||
351 | return 0; | |
352 | } | |
8321bbf8 | 353 | #endif /* CONFIG_PM_SLEEP */ |
f6d6daaf KK |
354 | |
355 | static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume); | |
356 | ||
63063bfb SK |
357 | static const struct i2c_device_id sec_pmic_id[] = { |
358 | { "sec_pmic", 0 }, | |
0f5f7078 SK |
359 | { } |
360 | }; | |
63063bfb | 361 | MODULE_DEVICE_TABLE(i2c, sec_pmic_id); |
0f5f7078 | 362 | |
63063bfb | 363 | static struct i2c_driver sec_pmic_driver = { |
0f5f7078 | 364 | .driver = { |
63063bfb | 365 | .name = "sec_pmic", |
0f5f7078 | 366 | .owner = THIS_MODULE, |
f6d6daaf | 367 | .pm = &sec_pmic_pm_ops, |
26aec009 | 368 | .of_match_table = of_match_ptr(sec_dt_match), |
0f5f7078 | 369 | }, |
63063bfb SK |
370 | .probe = sec_pmic_probe, |
371 | .remove = sec_pmic_remove, | |
372 | .id_table = sec_pmic_id, | |
0f5f7078 SK |
373 | }; |
374 | ||
63063bfb | 375 | static int __init sec_pmic_init(void) |
0f5f7078 | 376 | { |
63063bfb | 377 | return i2c_add_driver(&sec_pmic_driver); |
0f5f7078 SK |
378 | } |
379 | ||
63063bfb | 380 | subsys_initcall(sec_pmic_init); |
0f5f7078 | 381 | |
63063bfb | 382 | static void __exit sec_pmic_exit(void) |
0f5f7078 | 383 | { |
63063bfb | 384 | i2c_del_driver(&sec_pmic_driver); |
0f5f7078 | 385 | } |
63063bfb | 386 | module_exit(sec_pmic_exit); |
0f5f7078 SK |
387 | |
388 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
389 | MODULE_DESCRIPTION("Core support for the S5M MFD"); | |
390 | MODULE_LICENSE("GPL"); |