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linux-next/drivers/mfd/ucb1x00-assabet.c
Russell King dcea83adc6 [ARM] Hide ISA DMA API when ISA_DMA_API is unset
When ISA_DMA_API is unset, we're not implementing the ISA DMA API,
so there's no point in publishing the prototypes via asm/dma.h, nor
including the machine dependent parts of that API.

This allows us to remove a lot of mach/dma.h files which don't contain
any useful code.  Unfortunately though, some platforms put their own
private non-ISA definitions into mach/dma.h, so we leave these behind
and fix the appropriate #include statments.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-11-29 18:42:40 +00:00

75 lines
2.1 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/fs.h>
#include <linux/proc_fs.h>
#include <linux/device.h>
#include <mach/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");