Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-2.6.git] / drivers / mfd / ucb1x00-assabet.c
1 /*
2  *  linux/drivers/mfd/ucb1x00-assabet.c
3  *
4  *  Copyright (C) 2001-2003 Russell King, All Rights Reserved.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License.
9  *
10  *  We handle the machine-specific bits of the UCB1x00 driver here.
11  */
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/fs.h>
15 #include <linux/proc_fs.h>
16 #include <linux/device.h>
17
18 #include <asm/dma.h>
19
20 #include "ucb1x00.h"
21
22 #define UCB1X00_ATTR(name,input)\
23 static ssize_t name##_show(struct class_device *dev, char *buf) \
24 {                                                               \
25         struct ucb1x00 *ucb = classdev_to_ucb1x00(dev);         \
26         int val;                                                \
27         ucb1x00_adc_enable(ucb);                                \
28         val = ucb1x00_adc_read(ucb, input, UCB_NOSYNC);         \
29         ucb1x00_adc_disable(ucb);                               \
30         return sprintf(buf, "%d\n", val);                       \
31 }                                                               \
32 static CLASS_DEVICE_ATTR(name,0444,name##_show,NULL)
33
34 UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1);
35 UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0);
36 UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2);
37
38 static int ucb1x00_assabet_add(struct ucb1x00_dev *dev)
39 {
40         class_device_create_file(&dev->ucb->cdev, &class_device_attr_vbatt);
41         class_device_create_file(&dev->ucb->cdev, &class_device_attr_vcharger);
42         class_device_create_file(&dev->ucb->cdev, &class_device_attr_batt_temp);
43         return 0;
44 }
45
46 static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev)
47 {
48         class_device_remove_file(&dev->ucb->cdev, &class_device_attr_batt_temp);
49         class_device_remove_file(&dev->ucb->cdev, &class_device_attr_vcharger);
50         class_device_remove_file(&dev->ucb->cdev, &class_device_attr_vbatt);
51 }
52
53 static struct ucb1x00_driver ucb1x00_assabet_driver = {
54         .add    = ucb1x00_assabet_add,
55         .remove = ucb1x00_assabet_remove,
56 };
57
58 static int __init ucb1x00_assabet_init(void)
59 {
60         return ucb1x00_register_driver(&ucb1x00_assabet_driver);
61 }
62
63 static void __exit ucb1x00_assabet_exit(void)
64 {
65         ucb1x00_unregister_driver(&ucb1x00_assabet_driver);
66 }
67
68 module_init(ucb1x00_assabet_init);
69 module_exit(ucb1x00_assabet_exit);
70
71 MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
72 MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver");
73 MODULE_LICENSE("GPL");