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
, 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
, 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
, 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
, 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
, 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
,
171 * Only the common platform data elements for s5m8767 are parsed here from the
172 * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
173 * others have to parse their own platform data elements from device tree.
175 * The s5m8767 platform data structure is instantiated here and the drivers for
176 * the sub-modules need not instantiate another instance while parsing their
179 static struct sec_platform_data
*sec_pmic_i2c_parse_dt_pdata(
182 struct sec_platform_data
*pd
;
184 pd
= devm_kzalloc(dev
, sizeof(*pd
), GFP_KERNEL
);
186 dev_err(dev
, "could not allocate memory for pdata\n");
187 return ERR_PTR(-ENOMEM
);
191 * ToDo: the 'wakeup' member in the platform data is more of a linux
192 * specfic information. Hence, there is no binding for that yet and
199 static struct sec_platform_data
*sec_pmic_i2c_parse_dt_pdata(
206 static inline int sec_i2c_get_driver_data(struct i2c_client
*i2c
,
207 const struct i2c_device_id
*id
)
210 if (i2c
->dev
.of_node
) {
211 const struct of_device_id
*match
;
212 match
= of_match_node(sec_dt_match
, i2c
->dev
.of_node
);
213 return (int)match
->data
;
216 return (int)id
->driver_data
;
219 static int sec_pmic_probe(struct i2c_client
*i2c
,
220 const struct i2c_device_id
*id
)
222 struct sec_platform_data
*pdata
= dev_get_platdata(&i2c
->dev
);
223 const struct regmap_config
*regmap
;
224 struct sec_pmic_dev
*sec_pmic
;
227 sec_pmic
= devm_kzalloc(&i2c
->dev
, sizeof(struct sec_pmic_dev
),
229 if (sec_pmic
== NULL
)
232 i2c_set_clientdata(i2c
, sec_pmic
);
233 sec_pmic
->dev
= &i2c
->dev
;
235 sec_pmic
->irq
= i2c
->irq
;
236 sec_pmic
->type
= sec_i2c_get_driver_data(i2c
, id
);
238 if (sec_pmic
->dev
->of_node
) {
239 pdata
= sec_pmic_i2c_parse_dt_pdata(sec_pmic
->dev
);
241 ret
= PTR_ERR(pdata
);
244 pdata
->device_type
= sec_pmic
->type
;
247 sec_pmic
->device_type
= pdata
->device_type
;
248 sec_pmic
->ono
= pdata
->ono
;
249 sec_pmic
->irq_base
= pdata
->irq_base
;
250 sec_pmic
->wakeup
= pdata
->wakeup
;
251 sec_pmic
->pdata
= pdata
;
254 switch (sec_pmic
->device_type
) {
256 regmap
= &s2mps11_regmap_config
;
259 regmap
= &s5m8763_regmap_config
;
262 regmap
= &s5m8767_regmap_config
;
265 regmap
= &sec_regmap_config
;
269 sec_pmic
->regmap
= devm_regmap_init_i2c(i2c
, regmap
);
270 if (IS_ERR(sec_pmic
->regmap
)) {
271 ret
= PTR_ERR(sec_pmic
->regmap
);
272 dev_err(&i2c
->dev
, "Failed to allocate register map: %d\n",
277 sec_pmic
->rtc
= i2c_new_dummy(i2c
->adapter
, RTC_I2C_ADDR
);
278 i2c_set_clientdata(sec_pmic
->rtc
, sec_pmic
);
280 if (pdata
&& pdata
->cfg_pmic_irq
)
281 pdata
->cfg_pmic_irq();
283 sec_irq_init(sec_pmic
);
285 pm_runtime_set_active(sec_pmic
->dev
);
287 switch (sec_pmic
->device_type
) {
289 ret
= mfd_add_devices(sec_pmic
->dev
, -1, s5m8751_devs
,
290 ARRAY_SIZE(s5m8751_devs
), NULL
, 0, NULL
);
293 ret
= mfd_add_devices(sec_pmic
->dev
, -1, s5m8763_devs
,
294 ARRAY_SIZE(s5m8763_devs
), NULL
, 0, NULL
);
297 ret
= mfd_add_devices(sec_pmic
->dev
, -1, s5m8767_devs
,
298 ARRAY_SIZE(s5m8767_devs
), NULL
, 0, NULL
);
301 ret
= mfd_add_devices(sec_pmic
->dev
, -1, s2mps11_devs
,
302 ARRAY_SIZE(s2mps11_devs
), NULL
, 0, NULL
);
305 /* If this happens the probe function is problem */
315 sec_irq_exit(sec_pmic
);
316 i2c_unregister_device(sec_pmic
->rtc
);
320 static int sec_pmic_remove(struct i2c_client
*i2c
)
322 struct sec_pmic_dev
*sec_pmic
= i2c_get_clientdata(i2c
);
324 mfd_remove_devices(sec_pmic
->dev
);
325 sec_irq_exit(sec_pmic
);
326 i2c_unregister_device(sec_pmic
->rtc
);
330 static const struct i2c_device_id sec_pmic_id
[] = {
334 MODULE_DEVICE_TABLE(i2c
, sec_pmic_id
);
336 static struct i2c_driver sec_pmic_driver
= {
339 .owner
= THIS_MODULE
,
340 .of_match_table
= of_match_ptr(sec_dt_match
),
342 .probe
= sec_pmic_probe
,
343 .remove
= sec_pmic_remove
,
344 .id_table
= sec_pmic_id
,
347 static int __init
sec_pmic_init(void)
349 return i2c_add_driver(&sec_pmic_driver
);
352 subsys_initcall(sec_pmic_init
);
354 static void __exit
sec_pmic_exit(void)
356 i2c_del_driver(&sec_pmic_driver
);
358 module_exit(sec_pmic_exit
);
360 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
361 MODULE_DESCRIPTION("Core support for the S5M MFD");
362 MODULE_LICENSE("GPL");