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