| /* |
| * 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/fs.h> |
| #include <linux/proc_fs.h> |
| #include <linux/device.h> |
| |
| #include <asm/dma.h> |
| |
| #include "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) |
| { |
| device_create_file(&dev->ucb->dev, &dev_attr_vbatt); |
| device_create_file(&dev->ucb->dev, &dev_attr_vcharger); |
| device_create_file(&dev->ucb->dev, &dev_attr_batt_temp); |
| return 0; |
| } |
| |
| static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev) |
| { |
| 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"); |