blob: 373f423b118164dbe1058fcba74694d4122c1527 [file] [log] [blame]
Viresh Kumar1a6e4b72011-11-17 11:02:20 +05301/*
2 * ST Microelectronics MFD: stmpe's i2c client specific driver
3 *
4 * Copyright (C) ST-Ericsson SA 2010
5 * Copyright (C) ST Microelectronics SA 2011
6 *
7 * License Terms: GNU General Public License, version 2
8 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
9 * Author: Viresh Kumar <viresh.kumar@st.com> for ST Microelectronics
10 */
11
12#include <linux/i2c.h>
13#include <linux/interrupt.h>
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/types.h>
17#include "stmpe.h"
18
19static int i2c_reg_read(struct stmpe *stmpe, u8 reg)
20{
21 struct i2c_client *i2c = stmpe->client;
22
23 return i2c_smbus_read_byte_data(i2c, reg);
24}
25
26static int i2c_reg_write(struct stmpe *stmpe, u8 reg, u8 val)
27{
28 struct i2c_client *i2c = stmpe->client;
29
30 return i2c_smbus_write_byte_data(i2c, reg, val);
31}
32
33static int i2c_block_read(struct stmpe *stmpe, u8 reg, u8 length, u8 *values)
34{
35 struct i2c_client *i2c = stmpe->client;
36
37 return i2c_smbus_read_i2c_block_data(i2c, reg, length, values);
38}
39
40static int i2c_block_write(struct stmpe *stmpe, u8 reg, u8 length,
41 const u8 *values)
42{
43 struct i2c_client *i2c = stmpe->client;
44
45 return i2c_smbus_write_i2c_block_data(i2c, reg, length, values);
46}
47
48static struct stmpe_client_info i2c_ci = {
49 .read_byte = i2c_reg_read,
50 .write_byte = i2c_reg_write,
51 .read_block = i2c_block_read,
52 .write_block = i2c_block_write,
53};
54
55static int __devinit
56stmpe_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
57{
58 i2c_ci.data = (void *)id;
59 i2c_ci.irq = i2c->irq;
60 i2c_ci.client = i2c;
61 i2c_ci.dev = &i2c->dev;
62
63 return stmpe_probe(&i2c_ci, id->driver_data);
64}
65
66static int __devexit stmpe_i2c_remove(struct i2c_client *i2c)
67{
68 struct stmpe *stmpe = dev_get_drvdata(&i2c->dev);
69
70 return stmpe_remove(stmpe);
71}
72
73static const struct i2c_device_id stmpe_i2c_id[] = {
Viresh Kumar1cda2392011-11-17 11:02:22 +053074 { "stmpe610", STMPE610 },
Viresh Kumar7f7f4ea2011-11-17 11:02:23 +053075 { "stmpe801", STMPE801 },
Viresh Kumar1a6e4b72011-11-17 11:02:20 +053076 { "stmpe811", STMPE811 },
77 { "stmpe1601", STMPE1601 },
78 { "stmpe2401", STMPE2401 },
79 { "stmpe2403", STMPE2403 },
80 { }
81};
82MODULE_DEVICE_TABLE(i2c, stmpe_id);
83
84static struct i2c_driver stmpe_i2c_driver = {
85 .driver.name = "stmpe-i2c",
86 .driver.owner = THIS_MODULE,
87#ifdef CONFIG_PM
88 .driver.pm = &stmpe_dev_pm_ops,
89#endif
90 .probe = stmpe_i2c_probe,
91 .remove = __devexit_p(stmpe_i2c_remove),
92 .id_table = stmpe_i2c_id,
93};
94
95static int __init stmpe_init(void)
96{
97 return i2c_add_driver(&stmpe_i2c_driver);
98}
99subsys_initcall(stmpe_init);
100
101static void __exit stmpe_exit(void)
102{
103 i2c_del_driver(&stmpe_i2c_driver);
104}
105module_exit(stmpe_exit);
106
107MODULE_LICENSE("GPL v2");
108MODULE_DESCRIPTION("STMPE MFD I2C Interface Driver");
109MODULE_AUTHOR("Rabin Vincent <rabin.vincent@stericsson.com>");