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 | ||
88a1cfd6 SK |
34 | static struct mfd_cell s5m8751_devs[] = { |
35 | { | |
36 | .name = "s5m8751-pmic", | |
37 | }, { | |
38 | .name = "s5m-charger", | |
39 | }, { | |
40 | .name = "s5m8751-codec", | |
41 | }, | |
42 | }; | |
43 | ||
44 | static struct mfd_cell s5m8763_devs[] = { | |
45 | { | |
46 | .name = "s5m8763-pmic", | |
47 | }, { | |
48 | .name = "s5m-rtc", | |
49 | }, { | |
50 | .name = "s5m-charger", | |
51 | }, | |
52 | }; | |
53 | ||
54 | static struct mfd_cell s5m8767_devs[] = { | |
0f5f7078 SK |
55 | { |
56 | .name = "s5m8767-pmic", | |
57 | }, { | |
58 | .name = "s5m-rtc", | |
59 | }, | |
60 | }; | |
61 | ||
9b6d1343 SK |
62 | static struct mfd_cell s2mps11_devs[] = { |
63 | { | |
64 | .name = "s2mps11-pmic", | |
3134bcae YSB |
65 | }, { |
66 | .name = "s2mps11-clk", | |
67 | } | |
9b6d1343 SK |
68 | }; |
69 | ||
26aec009 ADK |
70 | #ifdef CONFIG_OF |
71 | static struct of_device_id sec_dt_match[] = { | |
72 | { .compatible = "samsung,s5m8767-pmic", | |
73 | .data = (void *)S5M8767X, | |
74 | }, | |
aa32acad YSB |
75 | { .compatible = "samsung,s2mps11-pmic", |
76 | .data = (void *)S2MPS11X, | |
77 | }, | |
26aec009 ADK |
78 | {}, |
79 | }; | |
80 | #endif | |
81 | ||
63063bfb | 82 | int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest) |
0f5f7078 | 83 | { |
3e1e4a5f | 84 | return regmap_read(sec_pmic->regmap_pmic, reg, dest); |
0f5f7078 | 85 | } |
63063bfb | 86 | EXPORT_SYMBOL_GPL(sec_reg_read); |
0f5f7078 | 87 | |
63063bfb | 88 | int sec_bulk_read(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf) |
0f5f7078 | 89 | { |
3e1e4a5f | 90 | return regmap_bulk_read(sec_pmic->regmap_pmic, reg, buf, count); |
0f5f7078 | 91 | } |
63063bfb | 92 | EXPORT_SYMBOL_GPL(sec_bulk_read); |
0f5f7078 | 93 | |
63063bfb | 94 | int sec_reg_write(struct sec_pmic_dev *sec_pmic, u8 reg, u8 value) |
0f5f7078 | 95 | { |
3e1e4a5f | 96 | return regmap_write(sec_pmic->regmap_pmic, reg, value); |
0f5f7078 | 97 | } |
63063bfb | 98 | EXPORT_SYMBOL_GPL(sec_reg_write); |
0f5f7078 | 99 | |
63063bfb | 100 | int sec_bulk_write(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf) |
0f5f7078 | 101 | { |
3e1e4a5f | 102 | return regmap_raw_write(sec_pmic->regmap_pmic, reg, buf, count); |
0f5f7078 | 103 | } |
63063bfb | 104 | EXPORT_SYMBOL_GPL(sec_bulk_write); |
0f5f7078 | 105 | |
63063bfb | 106 | int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask) |
0f5f7078 | 107 | { |
3e1e4a5f | 108 | return regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, val); |
0f5f7078 | 109 | } |
63063bfb | 110 | EXPORT_SYMBOL_GPL(sec_reg_update); |
0f5f7078 | 111 | |
6b845ba9 MB |
112 | static bool s2mps11_volatile(struct device *dev, unsigned int reg) |
113 | { | |
114 | switch (reg) { | |
115 | case S2MPS11_REG_INT1M: | |
116 | case S2MPS11_REG_INT2M: | |
117 | case S2MPS11_REG_INT3M: | |
118 | return false; | |
119 | default: | |
120 | return true; | |
121 | } | |
122 | } | |
123 | ||
124 | static bool s5m8763_volatile(struct device *dev, unsigned int reg) | |
125 | { | |
126 | switch (reg) { | |
127 | case S5M8763_REG_IRQM1: | |
128 | case S5M8763_REG_IRQM2: | |
129 | case S5M8763_REG_IRQM3: | |
130 | case S5M8763_REG_IRQM4: | |
131 | return false; | |
132 | default: | |
133 | return true; | |
134 | } | |
135 | } | |
136 | ||
63063bfb | 137 | static struct regmap_config sec_regmap_config = { |
0f5f7078 SK |
138 | .reg_bits = 8, |
139 | .val_bits = 8, | |
140 | }; | |
141 | ||
25f311fa MB |
142 | static struct regmap_config s2mps11_regmap_config = { |
143 | .reg_bits = 8, | |
144 | .val_bits = 8, | |
145 | ||
146 | .max_register = S2MPS11_REG_L38CTRL, | |
6b845ba9 MB |
147 | .volatile_reg = s2mps11_volatile, |
148 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
149 | }; |
150 | ||
151 | static struct regmap_config s5m8763_regmap_config = { | |
152 | .reg_bits = 8, | |
153 | .val_bits = 8, | |
154 | ||
155 | .max_register = S5M8763_REG_LBCNFG2, | |
6b845ba9 MB |
156 | .volatile_reg = s5m8763_volatile, |
157 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
158 | }; |
159 | ||
160 | static struct regmap_config s5m8767_regmap_config = { | |
161 | .reg_bits = 8, | |
162 | .val_bits = 8, | |
163 | ||
164 | .max_register = S5M8767_REG_LDO28CTRL, | |
6b845ba9 MB |
165 | .volatile_reg = s2mps11_volatile, |
166 | .cache_type = REGCACHE_FLAT, | |
25f311fa | 167 | }; |
26aec009 | 168 | |
3e1e4a5f KK |
169 | static const struct regmap_config sec_rtc_regmap_config = { |
170 | .reg_bits = 8, | |
171 | .val_bits = 8, | |
172 | }; | |
173 | ||
26aec009 ADK |
174 | #ifdef CONFIG_OF |
175 | /* | |
176 | * Only the common platform data elements for s5m8767 are parsed here from the | |
177 | * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and | |
178 | * others have to parse their own platform data elements from device tree. | |
179 | * | |
180 | * The s5m8767 platform data structure is instantiated here and the drivers for | |
181 | * the sub-modules need not instantiate another instance while parsing their | |
182 | * platform data. | |
183 | */ | |
184 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( | |
185 | struct device *dev) | |
186 | { | |
187 | struct sec_platform_data *pd; | |
188 | ||
189 | pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); | |
190 | if (!pd) { | |
191 | dev_err(dev, "could not allocate memory for pdata\n"); | |
192 | return ERR_PTR(-ENOMEM); | |
193 | } | |
194 | ||
195 | /* | |
196 | * ToDo: the 'wakeup' member in the platform data is more of a linux | |
197 | * specfic information. Hence, there is no binding for that yet and | |
198 | * not parsed here. | |
199 | */ | |
200 | ||
201 | return pd; | |
202 | } | |
203 | #else | |
197bf856 | 204 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( |
26aec009 ADK |
205 | struct device *dev) |
206 | { | |
207 | return 0; | |
208 | } | |
209 | #endif | |
210 | ||
211 | static inline int sec_i2c_get_driver_data(struct i2c_client *i2c, | |
212 | const struct i2c_device_id *id) | |
213 | { | |
214 | #ifdef CONFIG_OF | |
215 | if (i2c->dev.of_node) { | |
216 | const struct of_device_id *match; | |
217 | match = of_match_node(sec_dt_match, i2c->dev.of_node); | |
218 | return (int)match->data; | |
219 | } | |
220 | #endif | |
221 | return (int)id->driver_data; | |
222 | } | |
223 | ||
63063bfb | 224 | static int sec_pmic_probe(struct i2c_client *i2c, |
0f5f7078 SK |
225 | const struct i2c_device_id *id) |
226 | { | |
334a41ce | 227 | struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev); |
25f311fa | 228 | const struct regmap_config *regmap; |
63063bfb | 229 | struct sec_pmic_dev *sec_pmic; |
61a2af30 | 230 | int ret; |
0f5f7078 | 231 | |
63063bfb | 232 | sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), |
621210e2 | 233 | GFP_KERNEL); |
63063bfb | 234 | if (sec_pmic == NULL) |
0f5f7078 SK |
235 | return -ENOMEM; |
236 | ||
63063bfb SK |
237 | i2c_set_clientdata(i2c, sec_pmic); |
238 | sec_pmic->dev = &i2c->dev; | |
239 | sec_pmic->i2c = i2c; | |
240 | sec_pmic->irq = i2c->irq; | |
26aec009 ADK |
241 | sec_pmic->type = sec_i2c_get_driver_data(i2c, id); |
242 | ||
243 | if (sec_pmic->dev->of_node) { | |
244 | pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev); | |
245 | if (IS_ERR(pdata)) { | |
246 | ret = PTR_ERR(pdata); | |
247 | return ret; | |
248 | } | |
249 | pdata->device_type = sec_pmic->type; | |
250 | } | |
0f5f7078 | 251 | if (pdata) { |
63063bfb SK |
252 | sec_pmic->device_type = pdata->device_type; |
253 | sec_pmic->ono = pdata->ono; | |
254 | sec_pmic->irq_base = pdata->irq_base; | |
255 | sec_pmic->wakeup = pdata->wakeup; | |
26aec009 | 256 | sec_pmic->pdata = pdata; |
0f5f7078 SK |
257 | } |
258 | ||
25f311fa MB |
259 | switch (sec_pmic->device_type) { |
260 | case S2MPS11X: | |
261 | regmap = &s2mps11_regmap_config; | |
262 | break; | |
263 | case S5M8763X: | |
264 | regmap = &s5m8763_regmap_config; | |
265 | break; | |
266 | case S5M8767X: | |
267 | regmap = &s5m8767_regmap_config; | |
268 | break; | |
269 | default: | |
270 | regmap = &sec_regmap_config; | |
271 | break; | |
272 | } | |
273 | ||
3e1e4a5f KK |
274 | sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap); |
275 | if (IS_ERR(sec_pmic->regmap_pmic)) { | |
276 | ret = PTR_ERR(sec_pmic->regmap_pmic); | |
0f5f7078 | 277 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
61a2af30 | 278 | ret); |
1092e1c7 | 279 | return ret; |
0f5f7078 SK |
280 | } |
281 | ||
63063bfb SK |
282 | sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR); |
283 | i2c_set_clientdata(sec_pmic->rtc, sec_pmic); | |
0f5f7078 | 284 | |
3e1e4a5f KK |
285 | sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc, |
286 | &sec_rtc_regmap_config); | |
287 | if (IS_ERR(sec_pmic->regmap_rtc)) { | |
288 | ret = PTR_ERR(sec_pmic->regmap_rtc); | |
289 | dev_err(&i2c->dev, "Failed to allocate RTC register map: %d\n", | |
290 | ret); | |
291 | return ret; | |
292 | } | |
293 | ||
c3ebb30a | 294 | if (pdata && pdata->cfg_pmic_irq) |
0f5f7078 SK |
295 | pdata->cfg_pmic_irq(); |
296 | ||
63063bfb | 297 | sec_irq_init(sec_pmic); |
0f5f7078 | 298 | |
63063bfb | 299 | pm_runtime_set_active(sec_pmic->dev); |
0f5f7078 | 300 | |
63063bfb | 301 | switch (sec_pmic->device_type) { |
88a1cfd6 | 302 | case S5M8751X: |
63063bfb | 303 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs, |
0848c94f | 304 | ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL); |
88a1cfd6 SK |
305 | break; |
306 | case S5M8763X: | |
63063bfb | 307 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs, |
0848c94f | 308 | ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL); |
88a1cfd6 SK |
309 | break; |
310 | case S5M8767X: | |
63063bfb | 311 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs, |
0848c94f | 312 | ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL); |
88a1cfd6 | 313 | break; |
9b6d1343 SK |
314 | case S2MPS11X: |
315 | ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs, | |
0848c94f | 316 | ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL); |
9b6d1343 | 317 | break; |
88a1cfd6 SK |
318 | default: |
319 | /* If this happens the probe function is problem */ | |
320 | BUG(); | |
321 | } | |
0f5f7078 | 322 | |
15447a46 | 323 | if (ret) |
0f5f7078 SK |
324 | goto err; |
325 | ||
326 | return ret; | |
327 | ||
328 | err: | |
63063bfb SK |
329 | sec_irq_exit(sec_pmic); |
330 | i2c_unregister_device(sec_pmic->rtc); | |
0f5f7078 SK |
331 | return ret; |
332 | } | |
333 | ||
63063bfb | 334 | static int sec_pmic_remove(struct i2c_client *i2c) |
0f5f7078 | 335 | { |
63063bfb | 336 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
0f5f7078 | 337 | |
63063bfb SK |
338 | mfd_remove_devices(sec_pmic->dev); |
339 | sec_irq_exit(sec_pmic); | |
340 | i2c_unregister_device(sec_pmic->rtc); | |
0f5f7078 SK |
341 | return 0; |
342 | } | |
343 | ||
63063bfb SK |
344 | static const struct i2c_device_id sec_pmic_id[] = { |
345 | { "sec_pmic", 0 }, | |
0f5f7078 SK |
346 | { } |
347 | }; | |
63063bfb | 348 | MODULE_DEVICE_TABLE(i2c, sec_pmic_id); |
0f5f7078 | 349 | |
63063bfb | 350 | static struct i2c_driver sec_pmic_driver = { |
0f5f7078 | 351 | .driver = { |
63063bfb | 352 | .name = "sec_pmic", |
0f5f7078 | 353 | .owner = THIS_MODULE, |
26aec009 | 354 | .of_match_table = of_match_ptr(sec_dt_match), |
0f5f7078 | 355 | }, |
63063bfb SK |
356 | .probe = sec_pmic_probe, |
357 | .remove = sec_pmic_remove, | |
358 | .id_table = sec_pmic_id, | |
0f5f7078 SK |
359 | }; |
360 | ||
63063bfb | 361 | static int __init sec_pmic_init(void) |
0f5f7078 | 362 | { |
63063bfb | 363 | return i2c_add_driver(&sec_pmic_driver); |
0f5f7078 SK |
364 | } |
365 | ||
63063bfb | 366 | subsys_initcall(sec_pmic_init); |
0f5f7078 | 367 | |
63063bfb | 368 | static void __exit sec_pmic_exit(void) |
0f5f7078 | 369 | { |
63063bfb | 370 | i2c_del_driver(&sec_pmic_driver); |
0f5f7078 | 371 | } |
63063bfb | 372 | module_exit(sec_pmic_exit); |
0f5f7078 SK |
373 | |
374 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
375 | MODULE_DESCRIPTION("Core support for the S5M MFD"); | |
376 | MODULE_LICENSE("GPL"); |