4 * Copyright (c) 2012 Samsung Electronics Co., Ltd
5 * http://www.samsung.com
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.
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>
21 #include <linux/of_irq.h>
22 #include <linux/interrupt.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/mutex.h>
25 #include <linux/mfd/core.h>
26 #include <linux/mfd/samsung/core.h>
27 #include <linux/mfd/samsung/irq.h>
28 #include <linux/mfd/samsung/rtc.h>
29 #include <linux/mfd/samsung/s2mps11.h>
30 #include <linux/mfd/samsung/s5m8763.h>
31 #include <linux/mfd/samsung/s5m8767.h>
32 #include <linux/regmap.h>
34 static struct mfd_cell s5m8751_devs[] = {
36 .name = "s5m8751-pmic",
38 .name = "s5m-charger",
40 .name = "s5m8751-codec",
44 static struct mfd_cell s5m8763_devs[] = {
46 .name = "s5m8763-pmic",
50 .name = "s5m-charger",
54 static struct mfd_cell s5m8767_devs[] = {
56 .name = "s5m8767-pmic",
62 static struct mfd_cell s2mps11_devs[] = {
64 .name = "s2mps11-pmic",
66 .name = "s2mps11-clk",
71 static struct of_device_id sec_dt_match[] = {
72 { .compatible = "samsung,s5m8767-pmic",
73 .data = (void *)S5M8767X,
75 { .compatible = "samsung,s2mps11-pmic",
76 .data = (void *)S2MPS11X,
82 int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest)
84 return regmap_read(sec_pmic->regmap_pmic, reg, dest);
86 EXPORT_SYMBOL_GPL(sec_reg_read);
88 int sec_bulk_read(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf)
90 return regmap_bulk_read(sec_pmic->regmap_pmic, reg, buf, count);
92 EXPORT_SYMBOL_GPL(sec_bulk_read);
94 int sec_reg_write(struct sec_pmic_dev *sec_pmic, u8 reg, u8 value)
96 return regmap_write(sec_pmic->regmap_pmic, reg, value);
98 EXPORT_SYMBOL_GPL(sec_reg_write);
100 int sec_bulk_write(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf)
102 return regmap_raw_write(sec_pmic->regmap_pmic, reg, buf, count);
104 EXPORT_SYMBOL_GPL(sec_bulk_write);
106 int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask)
108 return regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, val);
110 EXPORT_SYMBOL_GPL(sec_reg_update);
112 static bool s2mps11_volatile(struct device *dev, unsigned int reg)
115 case S2MPS11_REG_INT1M:
116 case S2MPS11_REG_INT2M:
117 case S2MPS11_REG_INT3M:
124 static bool s5m8763_volatile(struct device *dev, unsigned int reg)
127 case S5M8763_REG_IRQM1:
128 case S5M8763_REG_IRQM2:
129 case S5M8763_REG_IRQM3:
130 case S5M8763_REG_IRQM4:
137 static struct regmap_config sec_regmap_config = {
142 static struct regmap_config s2mps11_regmap_config = {
146 .max_register = S2MPS11_REG_L38CTRL,
147 .volatile_reg = s2mps11_volatile,
148 .cache_type = REGCACHE_FLAT,
151 static struct regmap_config s5m8763_regmap_config = {
155 .max_register = S5M8763_REG_LBCNFG2,
156 .volatile_reg = s5m8763_volatile,
157 .cache_type = REGCACHE_FLAT,
160 static struct regmap_config s5m8767_regmap_config = {
164 .max_register = S5M8767_REG_LDO28CTRL,
165 .volatile_reg = s2mps11_volatile,
166 .cache_type = REGCACHE_FLAT,
169 static const struct regmap_config sec_rtc_regmap_config = {
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.
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
184 static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
187 struct sec_platform_data *pd;
189 pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
191 dev_err(dev, "could not allocate memory for pdata\n");
192 return ERR_PTR(-ENOMEM);
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
204 static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
211 static inline int sec_i2c_get_driver_data(struct i2c_client *i2c,
212 const struct i2c_device_id *id)
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;
221 return (int)id->driver_data;
224 static int sec_pmic_probe(struct i2c_client *i2c,
225 const struct i2c_device_id *id)
227 struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev);
228 const struct regmap_config *regmap;
229 struct sec_pmic_dev *sec_pmic;
232 sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
234 if (sec_pmic == NULL)
237 i2c_set_clientdata(i2c, sec_pmic);
238 sec_pmic->dev = &i2c->dev;
240 sec_pmic->irq = i2c->irq;
241 sec_pmic->type = sec_i2c_get_driver_data(i2c, id);
243 if (sec_pmic->dev->of_node) {
244 pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
246 ret = PTR_ERR(pdata);
249 pdata->device_type = sec_pmic->type;
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;
256 sec_pmic->pdata = pdata;
259 switch (sec_pmic->device_type) {
261 regmap = &s2mps11_regmap_config;
264 regmap = &s5m8763_regmap_config;
267 regmap = &s5m8767_regmap_config;
270 regmap = &sec_regmap_config;
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);
277 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
282 sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
283 i2c_set_clientdata(sec_pmic->rtc, sec_pmic);
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",
294 if (pdata && pdata->cfg_pmic_irq)
295 pdata->cfg_pmic_irq();
297 sec_irq_init(sec_pmic);
299 pm_runtime_set_active(sec_pmic->dev);
301 switch (sec_pmic->device_type) {
303 ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs,
304 ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL);
307 ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs,
308 ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL);
311 ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs,
312 ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL);
315 ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs,
316 ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL);
319 /* If this happens the probe function is problem */
329 sec_irq_exit(sec_pmic);
330 i2c_unregister_device(sec_pmic->rtc);
334 static int sec_pmic_remove(struct i2c_client *i2c)
336 struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
338 mfd_remove_devices(sec_pmic->dev);
339 sec_irq_exit(sec_pmic);
340 i2c_unregister_device(sec_pmic->rtc);
344 static const struct i2c_device_id sec_pmic_id[] = {
348 MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
350 static struct i2c_driver sec_pmic_driver = {
353 .owner = THIS_MODULE,
354 .of_match_table = of_match_ptr(sec_dt_match),
356 .probe = sec_pmic_probe,
357 .remove = sec_pmic_remove,
358 .id_table = sec_pmic_id,
361 static int __init sec_pmic_init(void)
363 return i2c_add_driver(&sec_pmic_driver);
366 subsys_initcall(sec_pmic_init);
368 static void __exit sec_pmic_exit(void)
370 i2c_del_driver(&sec_pmic_driver);
372 module_exit(sec_pmic_exit);
374 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
375 MODULE_DESCRIPTION("Core support for the S5M MFD");
376 MODULE_LICENSE("GPL");