aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpio/gpio-max7300.c
diff options
context:
space:
mode:
authorGrant Likely <grant.likely@secretlab.ca>2011-06-04 20:38:28 -0400
committerGrant Likely <grant.likely@secretlab.ca>2011-06-06 12:10:11 -0400
commitc103de240439dfee24ac50eb99c8be3a30d13323 (patch)
tree014eeda779510d7d3dfabd1183ce7f1a288d367b /drivers/gpio/gpio-max7300.c
parent8c31b1635b91e48f867e010cd7bcd06393e5858a (diff)
gpio: reorganize drivers
Sort the gpio makefile and enforce the naming convention gpio-*.c for gpio drivers. v2: cleaned up filenames in Kconfig and comment blocks v3: fixup use of BASIC_MMIO to GENERIC_GPIO for mxc Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/gpio/gpio-max7300.c')
-rw-r--r--drivers/gpio/gpio-max7300.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-max7300.c b/drivers/gpio/gpio-max7300.c
new file mode 100644
index 000000000000..a5ca0ab1b372
--- /dev/null
+++ b/drivers/gpio/gpio-max7300.c
@@ -0,0 +1,93 @@
1/*
2 * Copyright (C) 2009 Wolfram Sang, Pengutronix
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * Check max730x.c for further details.
9 */
10
11#include <linux/module.h>
12#include <linux/init.h>
13#include <linux/platform_device.h>
14#include <linux/mutex.h>
15#include <linux/i2c.h>
16#include <linux/spi/max7301.h>
17#include <linux/slab.h>
18
19static int max7300_i2c_write(struct device *dev, unsigned int reg,
20 unsigned int val)
21{
22 struct i2c_client *client = to_i2c_client(dev);
23
24 return i2c_smbus_write_byte_data(client, reg, val);
25}
26
27static int max7300_i2c_read(struct device *dev, unsigned int reg)
28{
29 struct i2c_client *client = to_i2c_client(dev);
30
31 return i2c_smbus_read_byte_data(client, reg);
32}
33
34static int __devinit max7300_probe(struct i2c_client *client,
35 const struct i2c_device_id *id)
36{
37 struct max7301 *ts;
38 int ret;
39
40 if (!i2c_check_functionality(client->adapter,
41 I2C_FUNC_SMBUS_BYTE_DATA))
42 return -EIO;
43
44 ts = kzalloc(sizeof(struct max7301), GFP_KERNEL);
45 if (!ts)
46 return -ENOMEM;
47
48 ts->read = max7300_i2c_read;
49 ts->write = max7300_i2c_write;
50 ts->dev = &client->dev;
51
52 ret = __max730x_probe(ts);
53 if (ret)
54 kfree(ts);
55 return ret;
56}
57
58static int __devexit max7300_remove(struct i2c_client *client)
59{
60 return __max730x_remove(&client->dev);
61}
62
63static const struct i2c_device_id max7300_id[] = {
64 { "max7300", 0 },
65 { }
66};
67MODULE_DEVICE_TABLE(i2c, max7300_id);
68
69static struct i2c_driver max7300_driver = {
70 .driver = {
71 .name = "max7300",
72 .owner = THIS_MODULE,
73 },
74 .probe = max7300_probe,
75 .remove = __devexit_p(max7300_remove),
76 .id_table = max7300_id,
77};
78
79static int __init max7300_init(void)
80{
81 return i2c_add_driver(&max7300_driver);
82}
83subsys_initcall(max7300_init);
84
85static void __exit max7300_exit(void)
86{
87 i2c_del_driver(&max7300_driver);
88}
89module_exit(max7300_exit);
90
91MODULE_AUTHOR("Wolfram Sang");
92MODULE_LICENSE("GPL v2");
93MODULE_DESCRIPTION("MAX7300 GPIO-Expander");