gpiodev/gpioctl RIP

SVN-Revision: 33725

2 files changed, 0 insertions, 223 deletions

diff --git a/target/linux/generic/files/drivers/char/gpio_dev.c b/target/linux/generic/files/drivers/char/gpio_dev.c
deleted file mode 100644
index c741573026..0000000000
--- a/target/linux/generic/files/drivers/char/gpio_dev.c
+++ /dev/null
@@ -1,181 +0,0 @@
-/*
- * character device wrapper for generic gpio layer
- *
- * 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, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
- *
- * Feedback, Bugs...  blogic@openwrt.org
- *
- * dpg 20100106
- */
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/gpio.h>
-#include <asm/atomic.h>
-#include <linux/init.h>
-#include <linux/genhd.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/gpio_dev.h>
-#include <linux/fs.h>
-
-#define DRVNAME		"gpiodev"
-#define DEVNAME		"gpio"
-
-static int dev_major;
-static struct class *gpiodev_class;
-
-
-/* third argument of user space ioctl ('arg' here) contains the <pin> */
-static int
-gpio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	int retval = 0;
-
-	switch (cmd)
-	{
-	case GPIO_GET:
-		retval = gpio_get_value(arg);
-		break;
-	case GPIO_SET:
-		gpio_set_value(arg, 1);
-		break;
-	case GPIO_CLEAR:
-		gpio_set_value(arg, 0);
-		break;
-	case GPIO_DIR_IN:
-		retval = gpio_direction_input(arg);
-		break;
-	case GPIO_DIR_OUT:
-		retval = gpio_direction_output(arg, 0);
-		break;
-	case GPIO_DIR_HIGH:
-		retval = gpio_direction_output(arg, 1);
-		break;
-	case GPIO_REQUEST:
-		/* should be first ioctl operation on <pin> */
-		retval = gpio_request(arg, DRVNAME);
-		break;
-	case GPIO_FREE:
-		/* should be last ioctl operation on <pin> */
-		/* may be needed first if previous user missed this ioctl */
-		gpio_free(arg);
-		break;
-	case GPIO_CAN_SLEEP:
-		retval = gpio_cansleep(arg);
-		break;
-	default:
-		retval = -EINVAL;
-		/* = -ENOTTY; // correct return but ... */
-		break;
-	}
-	return retval;
-}
-
-/* Allow co-incident opens */
-static int
-gpio_open(struct inode *inode, struct file *file)
-{
-	int result = 0;
-	unsigned int dev_minor = MINOR(inode->i_rdev);
-
-	if (dev_minor != 0)
-	{
-		printk(KERN_ERR DRVNAME ": trying to access unknown minor device -> %d\n", dev_minor);
-		result = -ENODEV;
-		goto out;
-	}
-out:
-	return result;
-}
-
-static int
-gpio_close(struct inode * inode, struct file * file)
-{
-	/* could track all <pin>s requested by this fd and gpio_free()
-         * them here
-	 */
-	return 0;
-}
-
-struct file_operations gpio_fops = {
-	unlocked_ioctl:	gpio_ioctl,
-	open:		gpio_open,
-	release:	gpio_close
-};
-
-static int
-gpio_probe(struct platform_device *dev)
-{
-	int result = 0;
-
-	dev_major = register_chrdev(0, DEVNAME, &gpio_fops);
-	if (!dev_major)
-	{
-		printk(KERN_ERR DRVNAME ": Error whilst opening %s \n", DEVNAME);
-		result = -ENODEV;
-		goto out;
-	}
-	gpiodev_class = class_create(THIS_MODULE, DRVNAME);
-	device_create(gpiodev_class, NULL, MKDEV(dev_major, 0), dev, DEVNAME);
-	printk(KERN_INFO DRVNAME ": gpio device registered with major %d\n", dev_major);
-out:
-	return result;
-}
-
-static int
-gpio_remove(struct platform_device *dev)
-{
-	device_destroy(gpiodev_class, MKDEV(dev_major, 0));
-	class_destroy(gpiodev_class);
-	unregister_chrdev(dev_major, DEVNAME);
-	return 0;
-}
-
-static struct
-platform_driver gpio_driver = {
-	.probe = gpio_probe,
-	.remove = gpio_remove,
-	.driver = {
-		.name = "GPIODEV",
-		.owner = THIS_MODULE,
-	},
-};
-
-static int __init
-gpio_mod_init(void)
-{
-	int ret = platform_driver_register(&gpio_driver);
-	if (ret)
-		printk(KERN_INFO DRVNAME ": Error registering platfom driver!\n");
-
-	return ret;
-}
-
-static void __exit
-gpio_mod_exit(void)
-{
-	platform_driver_unregister(&gpio_driver);
-}
-
-module_init (gpio_mod_init);
-module_exit (gpio_mod_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("John Crispin / OpenWrt +");
-MODULE_DESCRIPTION("Character device for for generic gpio api");
diff --git a/target/linux/generic/files/include/linux/gpio_dev.h b/target/linux/generic/files/include/linux/gpio_dev.h
deleted file mode 100644
index a2a4b51c78..0000000000
--- a/target/linux/generic/files/include/linux/gpio_dev.h
+++ /dev/null
@@ -1,42 +0,0 @@
-#ifndef _GPIO_DEV_H__
-#define _GPIO_DEV_H__
-
-/*********************************************************************
- *
- * This Linux kernel header is expanded from the original driver
- * (gpio_dev) by John Crispin. It provides an ioctl based interface to
- * GPIO pins via the /dev/gpio char device and gpiolib within the kernel.
- * The third argument to each ioctl is the GPIO pin number.
- *
- * This driver has been tested with lk 2.6.31 and works. The original
- * driver fails quietly with this version. The protocol is now a bit
- * different: the ioctl(fd, GPIO_REQUEST, <pin>) should be called
- * after the open("/dev/gpio", O_RDWR) to determine if the <pin> is
- * already in use. If the ioctl is successful (i.e. returns 0 for not
- * in use) then the <pin> is claimed by this driver and
- * ioctl(fd, GPIO_FREE, <pin>) should be called prior to close(fd) .
- * 
- * See <kernel_source>/Documentation/gpio.txt
- * Note that kernel designers prefer the use of the sysfs gpio interface.
- * This char driver is easier to use from code and faster.
- ********************************************************************/
-
-/* This header can be included in both the user and kernel spaces */
-/* The _IO macro is defined in sys/ioctl.h */
-
-#define IOC_GPIODEV_MAGIC  'B'
-
-#define GPIO_GET        _IO(IOC_GPIODEV_MAGIC, 10)
-#define GPIO_SET        _IO(IOC_GPIODEV_MAGIC, 11)
-#define GPIO_CLEAR      _IO(IOC_GPIODEV_MAGIC, 12)
-#define GPIO_DIR_IN     _IO(IOC_GPIODEV_MAGIC, 13)
-#define GPIO_DIR_OUT    _IO(IOC_GPIODEV_MAGIC, 14)
-        /* Sets the direction out and clears the <pin> (low) */
-
-#define GPIO_DIR_HIGH   _IO(IOC_GPIODEV_MAGIC, 15)
-        /* Sets the direction out and sets the <pin> (high) */
-#define GPIO_REQUEST    _IO(IOC_GPIODEV_MAGIC, 16)
-#define GPIO_FREE       _IO(IOC_GPIODEV_MAGIC, 17)
-#define GPIO_CAN_SLEEP  _IO(IOC_GPIODEV_MAGIC, 18)
-
-#endif