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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>
20#include <linux/of_irq.h>
21#include <linux/interrupt.h>
22#include <linux/pm_runtime.h>
23#include <linux/mutex.h>
24#include <linux/mfd/core.h>
25#include <linux/mfd/samsung/core.h>
26#include <linux/mfd/samsung/irq.h>
27#include <linux/mfd/samsung/rtc.h>
28#include <linux/mfd/samsung/s2mps11.h>
29#include <linux/mfd/samsung/s5m8763.h>
30#include <linux/mfd/samsung/s5m8767.h>
31#include <linux/regmap.h>
32
33static struct mfd_cell s5m8751_devs[] = {
34 {
35 .name = "s5m8751-pmic",
36 }, {
37 .name = "s5m-charger",
38 }, {
39 .name = "s5m8751-codec",
40 },
41};
42
43static struct mfd_cell s5m8763_devs[] = {
44 {
45 .name = "s5m8763-pmic",
46 }, {
47 .name = "s5m-rtc",
48 }, {
49 .name = "s5m-charger",
50 },
51};
52
53static struct mfd_cell s5m8767_devs[] = {
54 {
55 .name = "s5m8767-pmic",
56 }, {
57 .name = "s5m-rtc",
58 },
59};
60
61static struct mfd_cell s2mps11_devs[] = {
62 {
63 .name = "s2mps11-pmic",
64 },
65};
66
67#ifdef CONFIG_OF
68static struct of_device_id sec_dt_match[] = {
69 { .compatible = "samsung,s5m8767-pmic",
70 .data = (void *)S5M8767X,
71 },
72 {},
73};
74#endif
75
76int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest)
77{
78 return regmap_read(sec_pmic->regmap, reg, dest);
79}
80EXPORT_SYMBOL_GPL(sec_reg_read);
81
82int sec_bulk_read(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf)
83{
84 return regmap_bulk_read(sec_pmic->regmap, reg, buf, count);
85}
86EXPORT_SYMBOL_GPL(sec_bulk_read);
87
88int sec_reg_write(struct sec_pmic_dev *sec_pmic, u8 reg, u8 value)
89{
90 return regmap_write(sec_pmic->regmap, reg, value);
91}
92EXPORT_SYMBOL_GPL(sec_reg_write);
93
94int sec_bulk_write(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf)
95{
96 return regmap_raw_write(sec_pmic->regmap, reg, buf, count);
97}
98EXPORT_SYMBOL_GPL(sec_bulk_write);
99
100int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask)
101{
102 return regmap_update_bits(sec_pmic->regmap, reg, mask, val);
103}
104EXPORT_SYMBOL_GPL(sec_reg_update);
105
106static struct regmap_config sec_regmap_config = {
107 .reg_bits = 8,
108 .val_bits = 8,
109};
110
111static struct regmap_config s2mps11_regmap_config = {
112 .reg_bits = 8,
113 .val_bits = 8,
114
115 .max_register = S2MPS11_REG_L38CTRL,
116};
117
118static struct regmap_config s5m8763_regmap_config = {
119 .reg_bits = 8,
120 .val_bits = 8,
121
122 .max_register = S5M8763_REG_LBCNFG2,
123};
124
125static struct regmap_config s5m8767_regmap_config = {
126 .reg_bits = 8,
127 .val_bits = 8,
128
129 .max_register = S5M8767_REG_LDO28CTRL,
130};
131
132#ifdef CONFIG_OF
133
134
135
136
137
138
139
140
141
142static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
143 struct device *dev)
144{
145 struct sec_platform_data *pd;
146
147 pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
148 if (!pd) {
149 dev_err(dev, "could not allocate memory for pdata\n");
150 return ERR_PTR(-ENOMEM);
151 }
152
153
154
155
156
157
158
159 return pd;
160}
161#else
162static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
163 struct device *dev)
164{
165 return 0;
166}
167#endif
168
169static inline int sec_i2c_get_driver_data(struct i2c_client *i2c,
170 const struct i2c_device_id *id)
171{
172#ifdef CONFIG_OF
173 if (i2c->dev.of_node) {
174 const struct of_device_id *match;
175 match = of_match_node(sec_dt_match, i2c->dev.of_node);
176 return (int)match->data;
177 }
178#endif
179 return (int)id->driver_data;
180}
181
182static int sec_pmic_probe(struct i2c_client *i2c,
183 const struct i2c_device_id *id)
184{
185 struct sec_platform_data *pdata = i2c->dev.platform_data;
186 const struct regmap_config *regmap;
187 struct sec_pmic_dev *sec_pmic;
188 int ret;
189
190 sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
191 GFP_KERNEL);
192 if (sec_pmic == NULL)
193 return -ENOMEM;
194
195 i2c_set_clientdata(i2c, sec_pmic);
196 sec_pmic->dev = &i2c->dev;
197 sec_pmic->i2c = i2c;
198 sec_pmic->irq = i2c->irq;
199 sec_pmic->type = sec_i2c_get_driver_data(i2c, id);
200
201 if (sec_pmic->dev->of_node) {
202 pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
203 if (IS_ERR(pdata)) {
204 ret = PTR_ERR(pdata);
205 return ret;
206 }
207 pdata->device_type = sec_pmic->type;
208 }
209 if (pdata) {
210 sec_pmic->device_type = pdata->device_type;
211 sec_pmic->ono = pdata->ono;
212 sec_pmic->irq_base = pdata->irq_base;
213 sec_pmic->wakeup = pdata->wakeup;
214 sec_pmic->pdata = pdata;
215 }
216
217 switch (sec_pmic->device_type) {
218 case S2MPS11X:
219 regmap = &s2mps11_regmap_config;
220 break;
221 case S5M8763X:
222 regmap = &s5m8763_regmap_config;
223 break;
224 case S5M8767X:
225 regmap = &s5m8767_regmap_config;
226 break;
227 default:
228 regmap = &sec_regmap_config;
229 break;
230 }
231
232 sec_pmic->regmap = devm_regmap_init_i2c(i2c, regmap);
233 if (IS_ERR(sec_pmic->regmap)) {
234 ret = PTR_ERR(sec_pmic->regmap);
235 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
236 ret);
237 return ret;
238 }
239
240 sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
241 i2c_set_clientdata(sec_pmic->rtc, sec_pmic);
242
243 if (pdata && pdata->cfg_pmic_irq)
244 pdata->cfg_pmic_irq();
245
246 sec_irq_init(sec_pmic);
247
248 pm_runtime_set_active(sec_pmic->dev);
249
250 switch (sec_pmic->device_type) {
251 case S5M8751X:
252 ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs,
253 ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL);
254 break;
255 case S5M8763X:
256 ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs,
257 ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL);
258 break;
259 case S5M8767X:
260 ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs,
261 ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL);
262 break;
263 case S2MPS11X:
264 ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs,
265 ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL);
266 break;
267 default:
268
269 BUG();
270 }
271
272 if (ret)
273 goto err;
274
275 return ret;
276
277err:
278 sec_irq_exit(sec_pmic);
279 i2c_unregister_device(sec_pmic->rtc);
280 return ret;
281}
282
283static int sec_pmic_remove(struct i2c_client *i2c)
284{
285 struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
286
287 mfd_remove_devices(sec_pmic->dev);
288 sec_irq_exit(sec_pmic);
289 i2c_unregister_device(sec_pmic->rtc);
290 return 0;
291}
292
293static const struct i2c_device_id sec_pmic_id[] = {
294 { "sec_pmic", 0 },
295 { }
296};
297MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
298
299static struct i2c_driver sec_pmic_driver = {
300 .driver = {
301 .name = "sec_pmic",
302 .owner = THIS_MODULE,
303 .of_match_table = of_match_ptr(sec_dt_match),
304 },
305 .probe = sec_pmic_probe,
306 .remove = sec_pmic_remove,
307 .id_table = sec_pmic_id,
308};
309
310static int __init sec_pmic_init(void)
311{
312 return i2c_add_driver(&sec_pmic_driver);
313}
314
315subsys_initcall(sec_pmic_init);
316
317static void __exit sec_pmic_exit(void)
318{
319 i2c_del_driver(&sec_pmic_driver);
320}
321module_exit(sec_pmic_exit);
322
323MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
324MODULE_DESCRIPTION("Core support for the S5M MFD");
325MODULE_LICENSE("GPL");
326
