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)\
23static 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}								\
32static CLASS_DEVICE_ATTR(name,0444,name##_show,NULL)
33
34UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1);
35UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0);
36UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2);
37
38static 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
46static 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
53static struct ucb1x00_driver ucb1x00_assabet_driver = {
54	.add	= ucb1x00_assabet_add,
55	.remove	= ucb1x00_assabet_remove,
56};
57
58static int __init ucb1x00_assabet_init(void)
59{
60	return ucb1x00_register_driver(&ucb1x00_assabet_driver);
61}
62
63static void __exit ucb1x00_assabet_exit(void)
64{
65	ucb1x00_unregister_driver(&ucb1x00_assabet_driver);
66}
67
68module_init(ucb1x00_assabet_init);
69module_exit(ucb1x00_assabet_exit);
70
71MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
72MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver");
73MODULE_LICENSE("GPL");
74