107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
|
/*
|
||
|
|
* linux/drivers/mfd/ucb1x00-assabet.c
|
||
|
|
*
|
||
|
|
* Copyright (C) 2001-2003 Russell King, All Rights Reserved.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License.
|
||
|
|
*
|
||
|
|
* We handle the machine-specific bits of the UCB1x00 driver here.
|
||
|
|
*/
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/err.h>
|
||
|
|
#include <linux/fs.h>
|
||
|
|
#include <linux/gpio_keys.h>
|
||
|
|
#include <linux/input.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/proc_fs.h>
|
||
|
|
#include <linux/mfd/ucb1x00.h>
|
||
|
|
|
||
|
|
#define UCB1X00_ATTR(name,input)\
|
||
|
|
static ssize_t name##_show(struct device *dev, struct device_attribute *attr, \
|
||
|
|
char *buf) \
|
||
|
|
{ \
|
||
|
|
struct ucb1x00 *ucb = classdev_to_ucb1x00(dev); \
|
||
|
|
int val; \
|
||
|
|
ucb1x00_adc_enable(ucb); \
|
||
|
|
val = ucb1x00_adc_read(ucb, input, UCB_NOSYNC); \
|
||
|
|
ucb1x00_adc_disable(ucb); \
|
||
|
|
return sprintf(buf, "%d\n", val); \
|
||
|
|
} \
|
||
|
|
static DEVICE_ATTR(name,0444,name##_show,NULL)
|
||
|
|
|
||
|
|
UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1);
|
||
|
|
UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0);
|
||
|
|
UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2);
|
||
|
|
|
||
|
|
static int ucb1x00_assabet_add(struct ucb1x00_dev *dev)
|
||
|
|
{
|
||
|
|
struct ucb1x00 *ucb = dev->ucb;
|
||
|
|
struct platform_device *pdev;
|
||
|
|
struct gpio_keys_platform_data keys;
|
||
|
|
static struct gpio_keys_button buttons[6];
|
||
|
|
unsigned i;
|
||
|
|
|
||
|
|
memset(buttons, 0, sizeof(buttons));
|
||
|
|
memset(&keys, 0, sizeof(keys));
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(buttons); i++) {
|
||
|
|
buttons[i].code = BTN_0 + i;
|
||
|
|
buttons[i].gpio = ucb->gpio.base + i;
|
||
|
|
buttons[i].type = EV_KEY;
|
||
|
|
buttons[i].can_disable = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
keys.buttons = buttons;
|
||
|
|
keys.nbuttons = ARRAY_SIZE(buttons);
|
||
|
|
keys.poll_interval = 50;
|
||
|
|
keys.name = "ucb1x00";
|
||
|
|
|
||
|
|
pdev = platform_device_register_data(&ucb->dev, "gpio-keys", -1,
|
||
|
|
&keys, sizeof(keys));
|
||
|
|
|
||
|
|
device_create_file(&ucb->dev, &dev_attr_vbatt);
|
||
|
|
device_create_file(&ucb->dev, &dev_attr_vcharger);
|
||
|
|
device_create_file(&ucb->dev, &dev_attr_batt_temp);
|
||
|
|
|
||
|
|
dev->priv = pdev;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev)
|
||
|
|
{
|
||
|
|
struct platform_device *pdev = dev->priv;
|
||
|
|
|
||
|
|
if (!IS_ERR(pdev))
|
||
|
|
platform_device_unregister(pdev);
|
||
|
|
|
||
|
|
device_remove_file(&dev->ucb->dev, &dev_attr_batt_temp);
|
||
|
|
device_remove_file(&dev->ucb->dev, &dev_attr_vcharger);
|
||
|
|
device_remove_file(&dev->ucb->dev, &dev_attr_vbatt);
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct ucb1x00_driver ucb1x00_assabet_driver = {
|
||
|
|
.add = ucb1x00_assabet_add,
|
||
|
|
.remove = ucb1x00_assabet_remove,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init ucb1x00_assabet_init(void)
|
||
|
|
{
|
||
|
|
return ucb1x00_register_driver(&ucb1x00_assabet_driver);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __exit ucb1x00_assabet_exit(void)
|
||
|
|
{
|
||
|
|
ucb1x00_unregister_driver(&ucb1x00_assabet_driver);
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(ucb1x00_assabet_init);
|
||
|
|
module_exit(ucb1x00_assabet_exit);
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
|
||
|
|
MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver");
|
||
|
|
MODULE_LICENSE("GPL");
|