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Viewing changes to drivers/mfd/ucb1x00-assabet.c

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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drivers/mfd/ucb1x00-assabet.c
 
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/*
 
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 *  linux/drivers/mfd/ucb1x00-assabet.c
 
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 *
 
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 *  Copyright (C) 2001-2003 Russell King, All Rights Reserved.
 
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 *
 
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 * This program is free software; you can redistribute it and/or modify
 
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 * it under the terms of the GNU General Public License as published by
 
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 * the Free Software Foundation; either version 2 of the License.
 
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 *
 
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 *  We handle the machine-specific bits of the UCB1x00 driver here.
 
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 */
 
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#include <linux/module.h>
 
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#include <linux/init.h>
 
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#include <linux/fs.h>
 
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#include <linux/proc_fs.h>
 
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#include <linux/device.h>
 
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#include <linux/mfd/ucb1x00.h>
 
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#include <mach/dma.h>
 
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#define UCB1X00_ATTR(name,input)\
 
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static ssize_t name##_show(struct device *dev, struct device_attribute *attr, \
 
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                           char *buf)   \
 
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{                                                               \
 
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        struct ucb1x00 *ucb = classdev_to_ucb1x00(dev);         \
 
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        int val;                                                \
 
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        ucb1x00_adc_enable(ucb);                                \
 
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        val = ucb1x00_adc_read(ucb, input, UCB_NOSYNC);         \
 
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        ucb1x00_adc_disable(ucb);                               \
 
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        return sprintf(buf, "%d\n", val);                       \
 
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}                                                               \
 
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static DEVICE_ATTR(name,0444,name##_show,NULL)
 
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UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1);
 
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UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0);
 
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UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2);
 
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static int ucb1x00_assabet_add(struct ucb1x00_dev *dev)
 
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{
 
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        device_create_file(&dev->ucb->dev, &dev_attr_vbatt);
 
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        device_create_file(&dev->ucb->dev, &dev_attr_vcharger);
 
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        device_create_file(&dev->ucb->dev, &dev_attr_batt_temp);
 
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        return 0;
 
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}
 
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static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev)
 
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{
 
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        device_remove_file(&dev->ucb->dev, &dev_attr_batt_temp);
 
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        device_remove_file(&dev->ucb->dev, &dev_attr_vcharger);
 
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        device_remove_file(&dev->ucb->dev, &dev_attr_vbatt);
 
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}
 
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static struct ucb1x00_driver ucb1x00_assabet_driver = {
 
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        .add    = ucb1x00_assabet_add,
 
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        .remove = ucb1x00_assabet_remove,
 
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};
 
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static int __init ucb1x00_assabet_init(void)
 
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{
 
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        return ucb1x00_register_driver(&ucb1x00_assabet_driver);
 
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}
 
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static void __exit ucb1x00_assabet_exit(void)
 
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{
 
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        ucb1x00_unregister_driver(&ucb1x00_assabet_driver);
 
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}
 
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module_init(ucb1x00_assabet_init);
 
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module_exit(ucb1x00_assabet_exit);
 
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MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
 
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MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver");
 
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MODULE_LICENSE("GPL");