1 files changed, 0 insertions, 355 deletions
diff --git a/target/linux/at91/files/drivers/misc/at91-adc.c b/target/linux/at91/files/drivers/misc/at91-adc.c
deleted file mode 100644
index 90ea8181b2..0000000000
--- a/target/linux/at91/files/drivers/misc/at91-adc.c
+++ /dev/null
@@ -1,355 +0,0 @@
-/*
- *	Driver for ADC on Atmel AT91 SoC Family
- *
- *	Copyright (C) 2010 Claudio Mignanti - c.mignanti@gmail.com
- *	Based on http://www.at91.com/forum/viewtopic.php/p,9409/#p9409
- *
- *	Copyright (C) 2010 Stefano Barbato - stefano@codesink.org
- *
- *	2010/05/18 Antonio Galea
- *		Sysfs device model, different drivers integration
- *
- *	WISHLIST:
- *	- concurrent access control
- *	- add support for dynamic reconfiguration
- *	- hardware triggers
- *
- *	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.
- *
- * ---------------------------------------------------------------------------
-*/
-
-#include <linux/cdev.h>
-#include <linux/clk.h>
-#include <linux/fs.h>
-#include <linux/gpio.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/kernel.h>
-#include <linux/smp_lock.h>
-
-#include <asm/io.h>
-
-#include "at91_adc.h"
-
-#define DRV_CLASS	"at91_adc"
-
-#define ADC_REQUEST 		1	//un-used atm
-#define ADC_READ		2
-#define ADC_FREE		3
-
-/* Device functions */
-#define at91_adc_read(reg)				ioread32(at91_adc_base + (reg))
-#define at91_adc_write(reg, val)	iowrite32((val), at91_adc_base + (reg))
-#define AT91_DEFAULT_CONFIG			 AT91_ADC_SHTIM	 | \
-																	AT91_ADC_STARTUP | \
-																	AT91_ADC_PRESCAL | \
-																	AT91_ADC_SLEEP
-
-static void at91_adc_device_release(struct device *dev) {}
-
-struct platform_device at91_adc_device = {
-	.name					= "at91_adc",
-	.id						= -1,
-	.dev.release	 = at91_adc_device_release,
-};
-
-struct clk				*at91_adc_clk;
-void __iomem				*at91_adc_base;
-void __iomem				*at91_pioc_base;
-static struct cdev			*at91_adc_cdev	= NULL;
-static dev_t				at91_adc_devno 	= 0;
-static struct class			*at91_adc_class	= NULL;
-
-static int at91_adc_read_chan(int chan){
-	int val, sr;
-
-	if(chan<0 || chan>3){
-		return -EINVAL;
-	}
-	/* disable pull-up resistor */
-	iowrite32(1 << chan, at91_pioc_base + 0x60);
-
-	at91_adc_write(AT91_ADC_CHER,AT91_ADC_CH(chan));	// Enable Channel
-	at91_adc_write(AT91_ADC_CR,AT91_ADC_START);		//Start the ADC
-	
-	for(sr=0; !(sr & AT91_ADC_EOC(chan)); sr=at91_adc_read(AT91_ADC_SR))
-		cpu_relax();
-
-	val=at91_adc_read(AT91_ADC_CHR(chan)) & AT91_ADC_DATA; //Read up to 10 bits
-
-	return val;
-}
-
-/* 	PC0 ->  AD0
-	PC1 -> 	AD1
-	PC2 -> 	AD2
-	PC3 -> 	AD3 */
-static int mux_chan (int chan, int operation) {
-
-	int pin_chan;
-
-	if(chan<0 || chan>3){
-		return -EINVAL;
-	}
-
-	switch (chan) { 
-		case 0:
-			pin_chan=AT91_PIN_PC0;
-			break;
-		case 1:
-			pin_chan=AT91_PIN_PC1;
-			break;
-		case 2:
-			pin_chan=AT91_PIN_PC2;
-			break;
-		case 3:
-			pin_chan=AT91_PIN_PC3;
-			break;
-		default:
-			return -EINVAL;
-	}
-
-	if (operation == 1)		//request_chan
-		at91_set_A_periph(pin_chan, 0);				//Mux PIN to GPIO
-	else					//free_chan
-		at91_set_B_periph(pin_chan, 0);				//Mux PIN to GPIO
-
-	return 0;
-}
-
-static int at91_adc_config(int requested_config){
-	int actual_config;
-
-	at91_adc_write(AT91_ADC_CR,AT91_ADC_SWRST);	 //Reset the ADC
-	at91_adc_write(AT91_ADC_MR,requested_config); //Mode setup
-	actual_config = at91_adc_read(AT91_ADC_MR);	 //Read it back
-
-	return (requested_config==actual_config? 0: -EINVAL);
-}
-
-/* Sysfs interface */
-static ssize_t at91_adc_chanX_show(
-	struct device *dev, struct device_attribute *attr, char *buf ){
-
-	ssize_t status = 0;
-	int		 chan = -1;
-	int		 value;
-
-	if(strlen(attr->attr.name)==5 && strncmp(attr->attr.name,"chan",4)==0){
-		chan = attr->attr.name[4]-'0';
-	}
-
-	if(chan<0 || chan>3){
-		return -EIO;
-	}
-
-	value	= at91_adc_read_chan(chan);
-	status = sprintf(buf, "%d\n", value);
-
-	return status;
-}
-
-static DEVICE_ATTR(chan0, 0444, at91_adc_chanX_show, NULL);
-static DEVICE_ATTR(chan1, 0444, at91_adc_chanX_show, NULL);
-static DEVICE_ATTR(chan2, 0444, at91_adc_chanX_show, NULL);
-static DEVICE_ATTR(chan3, 0444, at91_adc_chanX_show, NULL);
-
-static const struct attribute *at91_adc_dev_attrs[] = {
-	&dev_attr_chan0.attr,
-	&dev_attr_chan1.attr,
-	&dev_attr_chan2.attr,
-	&dev_attr_chan3.attr,
-	NULL,
-};
-
-static const struct attribute_group at91_adc_dev_attr_group = {
-	.attrs = (struct attribute **) at91_adc_dev_attrs,
-};
-
-/* IOCTL interface */
-#ifdef HAVE_UNLOCKED_IOCTL
-static long at91_adc_unlocked_ioctl(
-	struct file *file, unsigned int cmd, unsigned long arg){
-#else
-static int at91_adc_ioctl(
-	struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg){
-#endif
-
-	long retval = 0;
-
-#ifdef HAVE_UNLOCKED_IOCTL
-  lock_kernel();
-#endif
-
-	switch (cmd) {
-		case ADC_REQUEST:
-			retval = mux_chan ((int)arg, 1);
-			break;
-
-		case ADC_READ:
-			retval = at91_adc_read_chan((int)arg);
-			break;
-
-		case ADC_FREE:
-			retval = mux_chan ((int)arg, 0);
-			break;
-
-		default:
-			retval = -EINVAL;
-	}
-
-#ifdef HAVE_UNLOCKED_IOCTL
-  unlock_kernel();
-#endif
-
-	return retval;
-}
-
-struct file_operations at91_adc_fops = {
-	.owner = THIS_MODULE,
-#ifdef HAVE_UNLOCKED_IOCTL
-	.unlocked_ioctl = at91_adc_unlocked_ioctl,
-#else
-	.ioctl = at91_adc_ioctl,
-#endif
-};
-
-static void at91_adc_cdev_teardown(void){
-	if(at91_adc_class){
-		device_destroy(at91_adc_class, at91_adc_devno);
-		class_destroy(at91_adc_class);
-	}
-
-	if(at91_adc_devno){
-		unregister_chrdev_region(at91_adc_devno,1);
-		if(at91_adc_cdev){ cdev_del(at91_adc_cdev); }
-	}
-
-	at91_adc_devno = 0;
-	at91_adc_cdev	= NULL;
-	at91_adc_class = NULL;
-	return;
-}
-
-static int at91_adc_cdev_setup(void){
-
-	int status;
-	/* alloc a new device number (major: dynamic, minor: 0) */
-	status = alloc_chrdev_region(&at91_adc_devno,0,1,at91_adc_device.name);
-
-	if(status){
-		goto err;
-	}
-
-	/* create a new char device */
-	at91_adc_cdev = cdev_alloc();
-	if(at91_adc_cdev == NULL){ status=-ENOMEM; goto err; }
-	at91_adc_cdev->owner = THIS_MODULE;
-	at91_adc_cdev->ops	 = &at91_adc_fops;
-	status = cdev_add(at91_adc_cdev,at91_adc_devno,1);
-	if(status){
-		goto err;
-	}
-	
-	/* register the class */
-	at91_adc_class = class_create(THIS_MODULE, DRV_CLASS);
-	if(IS_ERR(at91_adc_class)){ status=-EFAULT; goto err; }
-	device_create(at91_adc_class, NULL, at91_adc_devno, NULL, at91_adc_device.name);
-	printk(KERN_INFO "Major: %u; minor: %u\n", \
-		MAJOR(at91_adc_devno), MINOR(at91_adc_devno) \
-	);
-
-	return 0;
-
-err:
-	at91_adc_cdev_teardown();
-	return status;
-}
-
-/* Module init/exit */
-static int __init at91_adc_init(void){
-
-	int status;
-
-	at91_adc_clk = clk_get(NULL,"adc_clk");
-	clk_enable(at91_adc_clk);
-
-	at91_adc_base = ioremap(AT91SAM9260_BASE_ADC,SZ_256);
-	if(!at91_adc_base){
-		status=-ENODEV;
-		goto fail_no_iomem_adc;
-	}
-
-	at91_pioc_base = ioremap(AT91_BASE_SYS + AT91_PIOC,SZ_512);
-	if(!at91_pioc_base){
-		status=-ENODEV;
-		goto fail_no_iomem_pioc;
-	}
-
-	status = platform_device_register(&at91_adc_device);
-	if(status){
-		goto fail_no_dev;
-	}
-
-	status = at91_adc_config(AT91_DEFAULT_CONFIG);
-	if(status){
-		goto fail_no_config;
-	}
-
-	status = sysfs_create_group(
-		&(at91_adc_device.dev.kobj), &at91_adc_dev_attr_group
-	);
-
-	if(status){
-		goto fail_no_sysfs;
-	}
-
-	status = at91_adc_cdev_setup();
-	if(status){
-		goto fail_no_cdev;
-	}
-
-	printk(KERN_INFO "Registered device at91_adc.\n");
-	return 0;
-
-fail_no_cdev:
-fail_no_sysfs:
-	// nothing to undo
-fail_no_config:
-	platform_device_unregister(&at91_adc_device);
-fail_no_dev:
-	iounmap(at91_adc_base);
-fail_no_iomem_pioc:
-	iounmap(at91_pioc_base);
-fail_no_iomem_adc:
-	clk_disable(at91_adc_clk);
-	clk_put(at91_adc_clk);
-	return status;
-}
-
-static void __exit at91_adc_exit(void){
-
-	at91_adc_cdev_teardown();
-	platform_device_unregister(&at91_adc_device);
-	iounmap(at91_adc_base);
-	iounmap(at91_pioc_base);
-
-	clk_disable(at91_adc_clk);
-	clk_put(at91_adc_clk);
-
-	printk(KERN_INFO "Unregistered device at91_adc.\n");
-}
-
-module_init(at91_adc_init);
-module_exit(at91_adc_exit);
-
-MODULE_AUTHOR("Paul Kavan");
-MODULE_AUTHOR("Claudio Mignanti");
-MODULE_AUTHOR("Antonio Galea");
-MODULE_AUTHOR("Stefano Barbato");
-MODULE_DESCRIPTION("ADC Driver for the AT91SAM9G20");
-MODULE_LICENSE("GPL");