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yaml --- r: 8495 b: refs/heads/master c: 48c9202 h: refs/heads/master i: 8493: c8b043c 8491: e74b06c 8487: 5681762 8479: 683e218 v: v3
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Russell King
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Russell King
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Sep 11, 2005
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/* | ||
* 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> | ||
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#include <asm/dma.h> | ||
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#include "ucb1x00.h" | ||
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#define UCB1X00_ATTR(name,input)\ | ||
static ssize_t name##_show(struct class_device *dev, 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 CLASS_DEVICE_ATTR(name,0444,name##_show,NULL) | ||
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UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1); | ||
UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0); | ||
UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2); | ||
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static int ucb1x00_assabet_add(struct ucb1x00_dev *dev) | ||
{ | ||
class_device_create_file(&dev->ucb->cdev, &class_device_attr_vbatt); | ||
class_device_create_file(&dev->ucb->cdev, &class_device_attr_vcharger); | ||
class_device_create_file(&dev->ucb->cdev, &class_device_attr_batt_temp); | ||
return 0; | ||
} | ||
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static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev) | ||
{ | ||
class_device_remove_file(&dev->ucb->cdev, &class_device_attr_batt_temp); | ||
class_device_remove_file(&dev->ucb->cdev, &class_device_attr_vcharger); | ||
class_device_remove_file(&dev->ucb->cdev, &class_device_attr_vbatt); | ||
} | ||
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static struct ucb1x00_driver ucb1x00_assabet_driver = { | ||
.add = ucb1x00_assabet_add, | ||
.remove = ucb1x00_assabet_remove, | ||
}; | ||
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static int __init ucb1x00_assabet_init(void) | ||
{ | ||
return ucb1x00_register_driver(&ucb1x00_assabet_driver); | ||
} | ||
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static void __exit ucb1x00_assabet_exit(void) | ||
{ | ||
ucb1x00_unregister_driver(&ucb1x00_assabet_driver); | ||
} | ||
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module_init(ucb1x00_assabet_init); | ||
module_exit(ucb1x00_assabet_exit); | ||
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MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>"); | ||
MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver"); | ||
MODULE_LICENSE("GPL"); |