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> | |
26aec009 | 20 | #include <linux/of_irq.h> |
0f5f7078 SK |
21 | #include <linux/interrupt.h> |
22 | #include <linux/pm_runtime.h> | |
23 | #include <linux/mutex.h> | |
24 | #include <linux/mfd/core.h> | |
54227bcf SK |
25 | #include <linux/mfd/samsung/core.h> |
26 | #include <linux/mfd/samsung/irq.h> | |
27 | #include <linux/mfd/samsung/rtc.h> | |
25f311fa MB |
28 | #include <linux/mfd/samsung/s2mps11.h> |
29 | #include <linux/mfd/samsung/s5m8763.h> | |
30 | #include <linux/mfd/samsung/s5m8767.h> | |
0f5f7078 SK |
31 | #include <linux/regmap.h> |
32 | ||
88a1cfd6 SK |
33 | static struct mfd_cell s5m8751_devs[] = { |
34 | { | |
35 | .name = "s5m8751-pmic", | |
36 | }, { | |
37 | .name = "s5m-charger", | |
38 | }, { | |
39 | .name = "s5m8751-codec", | |
40 | }, | |
41 | }; | |
42 | ||
43 | static struct mfd_cell s5m8763_devs[] = { | |
44 | { | |
45 | .name = "s5m8763-pmic", | |
46 | }, { | |
47 | .name = "s5m-rtc", | |
48 | }, { | |
49 | .name = "s5m-charger", | |
50 | }, | |
51 | }; | |
52 | ||
53 | static struct mfd_cell s5m8767_devs[] = { | |
0f5f7078 SK |
54 | { |
55 | .name = "s5m8767-pmic", | |
56 | }, { | |
57 | .name = "s5m-rtc", | |
58 | }, | |
59 | }; | |
60 | ||
9b6d1343 SK |
61 | static struct mfd_cell s2mps11_devs[] = { |
62 | { | |
63 | .name = "s2mps11-pmic", | |
3134bcae YSB |
64 | }, { |
65 | .name = "s2mps11-clk", | |
66 | } | |
9b6d1343 SK |
67 | }; |
68 | ||
26aec009 ADK |
69 | #ifdef CONFIG_OF |
70 | static struct of_device_id sec_dt_match[] = { | |
71 | { .compatible = "samsung,s5m8767-pmic", | |
72 | .data = (void *)S5M8767X, | |
73 | }, | |
aa32acad YSB |
74 | { .compatible = "samsung,s2mps11-pmic", |
75 | .data = (void *)S2MPS11X, | |
76 | }, | |
26aec009 ADK |
77 | {}, |
78 | }; | |
79 | #endif | |
80 | ||
63063bfb | 81 | int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest) |
0f5f7078 | 82 | { |
63063bfb | 83 | return regmap_read(sec_pmic->regmap, reg, dest); |
0f5f7078 | 84 | } |
63063bfb | 85 | EXPORT_SYMBOL_GPL(sec_reg_read); |
0f5f7078 | 86 | |
63063bfb | 87 | int sec_bulk_read(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf) |
0f5f7078 | 88 | { |
63063bfb | 89 | return regmap_bulk_read(sec_pmic->regmap, reg, buf, count); |
0f5f7078 | 90 | } |
63063bfb | 91 | EXPORT_SYMBOL_GPL(sec_bulk_read); |
0f5f7078 | 92 | |
63063bfb | 93 | int sec_reg_write(struct sec_pmic_dev *sec_pmic, u8 reg, u8 value) |
0f5f7078 | 94 | { |
63063bfb | 95 | return regmap_write(sec_pmic->regmap, reg, value); |
0f5f7078 | 96 | } |
63063bfb | 97 | EXPORT_SYMBOL_GPL(sec_reg_write); |
0f5f7078 | 98 | |
63063bfb | 99 | int sec_bulk_write(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf) |
0f5f7078 | 100 | { |
63063bfb | 101 | return regmap_raw_write(sec_pmic->regmap, reg, buf, count); |
0f5f7078 | 102 | } |
63063bfb | 103 | EXPORT_SYMBOL_GPL(sec_bulk_write); |
0f5f7078 | 104 | |
63063bfb | 105 | int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask) |
0f5f7078 | 106 | { |
63063bfb | 107 | return regmap_update_bits(sec_pmic->regmap, reg, mask, val); |
0f5f7078 | 108 | } |
63063bfb | 109 | EXPORT_SYMBOL_GPL(sec_reg_update); |
0f5f7078 | 110 | |
6b845ba9 MB |
111 | static bool s2mps11_volatile(struct device *dev, unsigned int reg) |
112 | { | |
113 | switch (reg) { | |
114 | case S2MPS11_REG_INT1M: | |
115 | case S2MPS11_REG_INT2M: | |
116 | case S2MPS11_REG_INT3M: | |
117 | return false; | |
118 | default: | |
119 | return true; | |
120 | } | |
121 | } | |
122 | ||
123 | static bool s5m8763_volatile(struct device *dev, unsigned int reg) | |
124 | { | |
125 | switch (reg) { | |
126 | case S5M8763_REG_IRQM1: | |
127 | case S5M8763_REG_IRQM2: | |
128 | case S5M8763_REG_IRQM3: | |
129 | case S5M8763_REG_IRQM4: | |
130 | return false; | |
131 | default: | |
132 | return true; | |
133 | } | |
134 | } | |
135 | ||
63063bfb | 136 | static struct regmap_config sec_regmap_config = { |
0f5f7078 SK |
137 | .reg_bits = 8, |
138 | .val_bits = 8, | |
139 | }; | |
140 | ||
25f311fa MB |
141 | static struct regmap_config s2mps11_regmap_config = { |
142 | .reg_bits = 8, | |
143 | .val_bits = 8, | |
144 | ||
145 | .max_register = S2MPS11_REG_L38CTRL, | |
6b845ba9 MB |
146 | .volatile_reg = s2mps11_volatile, |
147 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
148 | }; |
149 | ||
150 | static struct regmap_config s5m8763_regmap_config = { | |
151 | .reg_bits = 8, | |
152 | .val_bits = 8, | |
153 | ||
154 | .max_register = S5M8763_REG_LBCNFG2, | |
6b845ba9 MB |
155 | .volatile_reg = s5m8763_volatile, |
156 | .cache_type = REGCACHE_FLAT, | |
25f311fa MB |
157 | }; |
158 | ||
159 | static struct regmap_config s5m8767_regmap_config = { | |
160 | .reg_bits = 8, | |
161 | .val_bits = 8, | |
162 | ||
163 | .max_register = S5M8767_REG_LDO28CTRL, | |
6b845ba9 MB |
164 | .volatile_reg = s2mps11_volatile, |
165 | .cache_type = REGCACHE_FLAT, | |
25f311fa | 166 | }; |
26aec009 ADK |
167 | |
168 | #ifdef CONFIG_OF | |
169 | /* | |
170 | * Only the common platform data elements for s5m8767 are parsed here from the | |
171 | * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and | |
172 | * others have to parse their own platform data elements from device tree. | |
173 | * | |
174 | * The s5m8767 platform data structure is instantiated here and the drivers for | |
175 | * the sub-modules need not instantiate another instance while parsing their | |
176 | * platform data. | |
177 | */ | |
178 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( | |
179 | struct device *dev) | |
180 | { | |
181 | struct sec_platform_data *pd; | |
182 | ||
183 | pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); | |
184 | if (!pd) { | |
185 | dev_err(dev, "could not allocate memory for pdata\n"); | |
186 | return ERR_PTR(-ENOMEM); | |
187 | } | |
188 | ||
189 | /* | |
190 | * ToDo: the 'wakeup' member in the platform data is more of a linux | |
191 | * specfic information. Hence, there is no binding for that yet and | |
192 | * not parsed here. | |
193 | */ | |
194 | ||
195 | return pd; | |
196 | } | |
197 | #else | |
197bf856 | 198 | static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata( |
26aec009 ADK |
199 | struct device *dev) |
200 | { | |
201 | return 0; | |
202 | } | |
203 | #endif | |
204 | ||
205 | static inline int sec_i2c_get_driver_data(struct i2c_client *i2c, | |
206 | const struct i2c_device_id *id) | |
207 | { | |
208 | #ifdef CONFIG_OF | |
209 | if (i2c->dev.of_node) { | |
210 | const struct of_device_id *match; | |
211 | match = of_match_node(sec_dt_match, i2c->dev.of_node); | |
212 | return (int)match->data; | |
213 | } | |
214 | #endif | |
215 | return (int)id->driver_data; | |
216 | } | |
217 | ||
63063bfb | 218 | static int sec_pmic_probe(struct i2c_client *i2c, |
0f5f7078 SK |
219 | const struct i2c_device_id *id) |
220 | { | |
334a41ce | 221 | struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev); |
25f311fa | 222 | const struct regmap_config *regmap; |
63063bfb | 223 | struct sec_pmic_dev *sec_pmic; |
61a2af30 | 224 | int ret; |
0f5f7078 | 225 | |
63063bfb | 226 | sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), |
621210e2 | 227 | GFP_KERNEL); |
63063bfb | 228 | if (sec_pmic == NULL) |
0f5f7078 SK |
229 | return -ENOMEM; |
230 | ||
63063bfb SK |
231 | i2c_set_clientdata(i2c, sec_pmic); |
232 | sec_pmic->dev = &i2c->dev; | |
233 | sec_pmic->i2c = i2c; | |
234 | sec_pmic->irq = i2c->irq; | |
26aec009 ADK |
235 | sec_pmic->type = sec_i2c_get_driver_data(i2c, id); |
236 | ||
237 | if (sec_pmic->dev->of_node) { | |
238 | pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev); | |
239 | if (IS_ERR(pdata)) { | |
240 | ret = PTR_ERR(pdata); | |
241 | return ret; | |
242 | } | |
243 | pdata->device_type = sec_pmic->type; | |
244 | } | |
0f5f7078 | 245 | if (pdata) { |
63063bfb SK |
246 | sec_pmic->device_type = pdata->device_type; |
247 | sec_pmic->ono = pdata->ono; | |
248 | sec_pmic->irq_base = pdata->irq_base; | |
249 | sec_pmic->wakeup = pdata->wakeup; | |
26aec009 | 250 | sec_pmic->pdata = pdata; |
0f5f7078 SK |
251 | } |
252 | ||
25f311fa MB |
253 | switch (sec_pmic->device_type) { |
254 | case S2MPS11X: | |
255 | regmap = &s2mps11_regmap_config; | |
256 | break; | |
257 | case S5M8763X: | |
258 | regmap = &s5m8763_regmap_config; | |
259 | break; | |
260 | case S5M8767X: | |
261 | regmap = &s5m8767_regmap_config; | |
262 | break; | |
263 | default: | |
264 | regmap = &sec_regmap_config; | |
265 | break; | |
266 | } | |
267 | ||
268 | sec_pmic->regmap = devm_regmap_init_i2c(i2c, regmap); | |
63063bfb SK |
269 | if (IS_ERR(sec_pmic->regmap)) { |
270 | ret = PTR_ERR(sec_pmic->regmap); | |
0f5f7078 | 271 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
61a2af30 | 272 | ret); |
1092e1c7 | 273 | return ret; |
0f5f7078 SK |
274 | } |
275 | ||
63063bfb SK |
276 | sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR); |
277 | i2c_set_clientdata(sec_pmic->rtc, sec_pmic); | |
0f5f7078 | 278 | |
c3ebb30a | 279 | if (pdata && pdata->cfg_pmic_irq) |
0f5f7078 SK |
280 | pdata->cfg_pmic_irq(); |
281 | ||
63063bfb | 282 | sec_irq_init(sec_pmic); |
0f5f7078 | 283 | |
63063bfb | 284 | pm_runtime_set_active(sec_pmic->dev); |
0f5f7078 | 285 | |
63063bfb | 286 | switch (sec_pmic->device_type) { |
88a1cfd6 | 287 | case S5M8751X: |
63063bfb | 288 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs, |
0848c94f | 289 | ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL); |
88a1cfd6 SK |
290 | break; |
291 | case S5M8763X: | |
63063bfb | 292 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs, |
0848c94f | 293 | ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL); |
88a1cfd6 SK |
294 | break; |
295 | case S5M8767X: | |
63063bfb | 296 | ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs, |
0848c94f | 297 | ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL); |
88a1cfd6 | 298 | break; |
9b6d1343 SK |
299 | case S2MPS11X: |
300 | ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs, | |
0848c94f | 301 | ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL); |
9b6d1343 | 302 | break; |
88a1cfd6 SK |
303 | default: |
304 | /* If this happens the probe function is problem */ | |
305 | BUG(); | |
306 | } | |
0f5f7078 | 307 | |
15447a46 | 308 | if (ret) |
0f5f7078 SK |
309 | goto err; |
310 | ||
311 | return ret; | |
312 | ||
313 | err: | |
63063bfb SK |
314 | sec_irq_exit(sec_pmic); |
315 | i2c_unregister_device(sec_pmic->rtc); | |
0f5f7078 SK |
316 | return ret; |
317 | } | |
318 | ||
63063bfb | 319 | static int sec_pmic_remove(struct i2c_client *i2c) |
0f5f7078 | 320 | { |
63063bfb | 321 | struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); |
0f5f7078 | 322 | |
63063bfb SK |
323 | mfd_remove_devices(sec_pmic->dev); |
324 | sec_irq_exit(sec_pmic); | |
325 | i2c_unregister_device(sec_pmic->rtc); | |
0f5f7078 SK |
326 | return 0; |
327 | } | |
328 | ||
63063bfb SK |
329 | static const struct i2c_device_id sec_pmic_id[] = { |
330 | { "sec_pmic", 0 }, | |
0f5f7078 SK |
331 | { } |
332 | }; | |
63063bfb | 333 | MODULE_DEVICE_TABLE(i2c, sec_pmic_id); |
0f5f7078 | 334 | |
63063bfb | 335 | static struct i2c_driver sec_pmic_driver = { |
0f5f7078 | 336 | .driver = { |
63063bfb | 337 | .name = "sec_pmic", |
0f5f7078 | 338 | .owner = THIS_MODULE, |
26aec009 | 339 | .of_match_table = of_match_ptr(sec_dt_match), |
0f5f7078 | 340 | }, |
63063bfb SK |
341 | .probe = sec_pmic_probe, |
342 | .remove = sec_pmic_remove, | |
343 | .id_table = sec_pmic_id, | |
0f5f7078 SK |
344 | }; |
345 | ||
63063bfb | 346 | static int __init sec_pmic_init(void) |
0f5f7078 | 347 | { |
63063bfb | 348 | return i2c_add_driver(&sec_pmic_driver); |
0f5f7078 SK |
349 | } |
350 | ||
63063bfb | 351 | subsys_initcall(sec_pmic_init); |
0f5f7078 | 352 | |
63063bfb | 353 | static void __exit sec_pmic_exit(void) |
0f5f7078 | 354 | { |
63063bfb | 355 | i2c_del_driver(&sec_pmic_driver); |
0f5f7078 | 356 | } |
63063bfb | 357 | module_exit(sec_pmic_exit); |
0f5f7078 SK |
358 | |
359 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
360 | MODULE_DESCRIPTION("Core support for the S5M MFD"); | |
361 | MODULE_LICENSE("GPL"); |