1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/*
* tlv320aic325x-i2c.c -- driver for TLV320AIC3XXX
*
* Author: Mukund Navada <navada@ti.com>
* Mehar Bajwa <mehar.bajwa@ti.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/mfd/tlv320aic325x-core.h>
struct regmap_config aic325x_i2c_regmap = {
.reg_bits = 8,
.val_bits = 8,
.cache_type = REGCACHE_NONE,
};
static __devinit int aic325x_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct aic325x *aic325x;
const struct regmap_config *regmap_config;
int ret;
switch (id->driver_data) {
#ifdef CONFIG_AIC3262_CORE
case TLV320AIC3262:
regmap_config = &aic325x_i2c_regmap;
break;
#endif
case TLV320AIC3256:
regmap_config = &aic325x_i2c_regmap;
break;
default:
dev_err(&i2c->dev, "Unknown device type %ld\n",
id->driver_data);
return -EINVAL;
}
aic325x = devm_kzalloc(&i2c->dev, sizeof(*aic325x), GFP_KERNEL);
if (aic325x == NULL)
return -ENOMEM;
aic325x->regmap = devm_regmap_init_i2c(i2c, regmap_config);
if (IS_ERR(aic325x->regmap)) {
ret = PTR_ERR(aic325x->regmap);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
aic325x->type = id->driver_data;
aic325x->dev = &i2c->dev;
aic325x->irq = i2c->irq;
return aic325x_device_init(aic325x);
}
static int __devexit aic325x_i2c_remove(struct i2c_client *i2c)
{
struct aic325x *aic325x = dev_get_drvdata(&i2c->dev);
aic325x_device_exit(aic325x);
return 0;
}
static const struct i2c_device_id aic325x_i2c_id[] = {
{"tlv320aic3262", TLV320AIC3262},
{"tlv320aic325x", TLV320AIC3256},
{ }
};
MODULE_DEVICE_TABLE(i2c, aic325x_i2c_id);
static struct i2c_driver aic325x_i2c_driver = {
.driver = {
.name = "tlv320aic325x",
.owner = THIS_MODULE,
},
.probe = aic325x_i2c_probe,
.remove = __devexit_p(aic325x_i2c_remove),
.id_table = aic325x_i2c_id,
};
module_i2c_driver(aic325x_i2c_driver);
MODULE_DESCRIPTION("TLV320AIC3XXX I2C bus interface");
MODULE_AUTHOR("Mukund Navada <navada@ti.com>");
MODULE_LICENSE("GPL");
|
