1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 *  linux/drivers/mfd/ucb1x00-assabet.c
  4 *
  5 *  Copyright (C) 2001-2003 Russell King, All Rights Reserved.
  6 *
 
 
 
 
  7 *  We handle the machine-specific bits of the UCB1x00 driver here.
  8 */
  9#include <linux/module.h>
 10#include <linux/init.h>
 11#include <linux/device.h>
 12#include <linux/err.h>
 13#include <linux/fs.h>
 14#include <linux/gpio_keys.h>
 15#include <linux/input.h>
 16#include <linux/platform_device.h>
 17#include <linux/proc_fs.h>
 
 18#include <linux/mfd/ucb1x00.h>
 19
 
 
 
 20#define UCB1X00_ATTR(name,input)\
 21static ssize_t name##_show(struct device *dev, struct device_attribute *attr, \
 22			   char *buf)	\
 23{								\
 24	struct ucb1x00 *ucb = classdev_to_ucb1x00(dev);		\
 25	int val;						\
 26	ucb1x00_adc_enable(ucb);				\
 27	val = ucb1x00_adc_read(ucb, input, UCB_NOSYNC);		\
 28	ucb1x00_adc_disable(ucb);				\
 29	return sprintf(buf, "%d\n", val);			\
 30}								\
 31static DEVICE_ATTR_RO(name)
 32
 33UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1);
 34UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0);
 35UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2);
 36
 37static int ucb1x00_assabet_add(struct ucb1x00_dev *dev)
 38{
 39	struct ucb1x00 *ucb = dev->ucb;
 40	struct platform_device *pdev;
 41	struct gpio_keys_platform_data keys;
 42	static struct gpio_keys_button buttons[6];
 43	unsigned i;
 44
 45	memset(buttons, 0, sizeof(buttons));
 46	memset(&keys, 0, sizeof(keys));
 47
 48	for (i = 0; i < ARRAY_SIZE(buttons); i++) {
 49		buttons[i].code = BTN_0 + i;
 50		buttons[i].gpio = ucb->gpio.base + i;
 51		buttons[i].type = EV_KEY;
 52		buttons[i].can_disable = true;
 53	}
 54
 55	keys.buttons = buttons;
 56	keys.nbuttons = ARRAY_SIZE(buttons);
 57	keys.poll_interval = 50;
 58	keys.name = "ucb1x00";
 59
 60	pdev = platform_device_register_data(&ucb->dev, "gpio-keys", -1,
 61		&keys, sizeof(keys));
 62
 63	device_create_file(&ucb->dev, &dev_attr_vbatt);
 64	device_create_file(&ucb->dev, &dev_attr_vcharger);
 65	device_create_file(&ucb->dev, &dev_attr_batt_temp);
 66
 67	dev->priv = pdev;
 68	return 0;
 69}
 70
 71static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev)
 72{
 73	struct platform_device *pdev = dev->priv;
 74
 75	if (!IS_ERR(pdev))
 76		platform_device_unregister(pdev);
 77
 78	device_remove_file(&dev->ucb->dev, &dev_attr_batt_temp);
 79	device_remove_file(&dev->ucb->dev, &dev_attr_vcharger);
 80	device_remove_file(&dev->ucb->dev, &dev_attr_vbatt);
 81}
 82
 83static struct ucb1x00_driver ucb1x00_assabet_driver = {
 84	.add	= ucb1x00_assabet_add,
 85	.remove	= ucb1x00_assabet_remove,
 86};
 87
 88static int __init ucb1x00_assabet_init(void)
 89{
 90	return ucb1x00_register_driver(&ucb1x00_assabet_driver);
 91}
 92
 93static void __exit ucb1x00_assabet_exit(void)
 94{
 95	ucb1x00_unregister_driver(&ucb1x00_assabet_driver);
 96}
 97
 98module_init(ucb1x00_assabet_init);
 99module_exit(ucb1x00_assabet_exit);
100
101MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
102MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver");
103MODULE_LICENSE("GPL");

 
 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#include <linux/mfd/ucb1x00.h>
18
19#include <mach/dma.h>
20
21
22#define UCB1X00_ATTR(name,input)\
23static ssize_t name##_show(struct device *dev, struct device_attribute *attr, \
24			   char *buf)	\
25{								\
26	struct ucb1x00 *ucb = classdev_to_ucb1x00(dev);		\
27	int val;						\
28	ucb1x00_adc_enable(ucb);				\
29	val = ucb1x00_adc_read(ucb, input, UCB_NOSYNC);		\
30	ucb1x00_adc_disable(ucb);				\
31	return sprintf(buf, "%d\n", val);			\
32}								\
33static DEVICE_ATTR(name,0444,name##_show,NULL)
34
35UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1);
36UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0);
37UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2);
38
39static int ucb1x00_assabet_add(struct ucb1x00_dev *dev)
40{
41	device_create_file(&dev->ucb->dev, &dev_attr_vbatt);
42	device_create_file(&dev->ucb->dev, &dev_attr_vcharger);
43	device_create_file(&dev->ucb->dev, &dev_attr_batt_temp);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
44	return 0;
45}
46
47static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev)
48{
 
 
 
 
 
49	device_remove_file(&dev->ucb->dev, &dev_attr_batt_temp);
50	device_remove_file(&dev->ucb->dev, &dev_attr_vcharger);
51	device_remove_file(&dev->ucb->dev, &dev_attr_vbatt);
52}
53
54static struct ucb1x00_driver ucb1x00_assabet_driver = {
55	.add	= ucb1x00_assabet_add,
56	.remove	= ucb1x00_assabet_remove,
57};
58
59static int __init ucb1x00_assabet_init(void)
60{
61	return ucb1x00_register_driver(&ucb1x00_assabet_driver);
62}
63
64static void __exit ucb1x00_assabet_exit(void)
65{
66	ucb1x00_unregister_driver(&ucb1x00_assabet_driver);
67}
68
69module_init(ucb1x00_assabet_init);
70module_exit(ucb1x00_assabet_exit);
71
72MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
73MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver");
74MODULE_LICENSE("GPL");