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authorJonas Gorski <jonas.gorski@gmail.com>2017-10-12 10:51:53 +0200
committerJonas Gorski <jonas.gorski@gmail.com>2017-10-29 23:41:00 +0100
commit23145d427613ee9b982cec25d187b41cc938f27a (patch)
treecb6e54b7be9d7922ac93db4324a623582cc35a4b /target/linux/ar7/files
parentc77ba7df09564226b791ae693dc3cf3ad9d2385f (diff)
downloadupstream-23145d427613ee9b982cec25d187b41cc938f27a.tar.gz
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ar7: remove gpio character device
There are no obvious users, and any out of tree users should convert to one of the generic APIs. Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Diffstat (limited to 'target/linux/ar7/files')
-rw-r--r--target/linux/ar7/files/drivers/char/ar7_gpio.c158
1 files changed, 0 insertions, 158 deletions
diff --git a/target/linux/ar7/files/drivers/char/ar7_gpio.c b/target/linux/ar7/files/drivers/char/ar7_gpio.c
deleted file mode 100644
index 71310fa751..0000000000
--- a/target/linux/ar7/files/drivers/char/ar7_gpio.c
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
- * Copyright (C) 2007 Nicolas Thill <nico@openwrt.org>
- *
- * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/device.h>
-#include <linux/fs.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/uaccess.h>
-#include <linux/io.h>
-#include <linux/types.h>
-#include <linux/cdev.h>
-#include <gpio.h>
-
-#define DRVNAME "ar7_gpio"
-#define LONGNAME "TI AR7 GPIOs Driver"
-
-MODULE_AUTHOR("Nicolas Thill <nico@openwrt.org>");
-MODULE_DESCRIPTION(LONGNAME);
-MODULE_LICENSE("GPL");
-
-static int ar7_gpio_major;
-
-static ssize_t ar7_gpio_write(struct file *file, const char __user *buf,
- size_t len, loff_t *ppos)
-{
- int pin = iminor(file->f_path.dentry->d_inode);
- size_t i;
-
- for (i = 0; i < len; ++i) {
- char c;
- if (get_user(c, buf + i))
- return -EFAULT;
- switch (c) {
- case '0':
- gpio_set_value(pin, 0);
- break;
- case '1':
- gpio_set_value(pin, 1);
- break;
- case 'd':
- case 'D':
- ar7_gpio_disable(pin);
- break;
- case 'e':
- case 'E':
- ar7_gpio_enable(pin);
- break;
- case 'i':
- case 'I':
- case '<':
- gpio_direction_input(pin);
- break;
- case 'o':
- case 'O':
- case '>':
- gpio_direction_output(pin, 0);
- break;
- default:
- return -EINVAL;
- }
- }
-
- return len;
-}
-
-static ssize_t ar7_gpio_read(struct file *file, char __user *buf,
- size_t len, loff_t *ppos)
-{
- int pin = iminor(file->f_path.dentry->d_inode);
- int value;
-
- value = gpio_get_value(pin);
- if (put_user(value ? '1' : '0', buf))
- return -EFAULT;
-
- return 1;
-}
-
-static int ar7_gpio_open(struct inode *inode, struct file *file)
-{
- int m = iminor(inode);
-
- if (m >= (ar7_is_titan() ? TITAN_GPIO_MAX : AR7_GPIO_MAX))
- return -EINVAL;
-
- return nonseekable_open(inode, file);
-}
-
-static int ar7_gpio_release(struct inode *inode, struct file *file)
-{
- return 0;
-}
-
-static const struct file_operations ar7_gpio_fops = {
- .owner = THIS_MODULE,
- .write = ar7_gpio_write,
- .read = ar7_gpio_read,
- .open = ar7_gpio_open,
- .release = ar7_gpio_release,
- .llseek = no_llseek,
-};
-
-static struct platform_device *ar7_gpio_device;
-
-static int __init ar7_gpio_char_init(void)
-{
- int rc;
-
- ar7_gpio_device = platform_device_alloc(DRVNAME, -1);
- if (!ar7_gpio_device)
- return -ENOMEM;
-
- rc = platform_device_add(ar7_gpio_device);
- if (rc < 0)
- goto out_put;
-
- rc = register_chrdev(ar7_gpio_major, DRVNAME, &ar7_gpio_fops);
- if (rc < 0)
- goto out_put;
-
- ar7_gpio_major = rc;
-
- rc = 0;
-
- goto out;
-
-out_put:
- platform_device_put(ar7_gpio_device);
-out:
- return rc;
-}
-
-static void __exit ar7_gpio_char_exit(void)
-{
- unregister_chrdev(ar7_gpio_major, DRVNAME);
- platform_device_unregister(ar7_gpio_device);
-}
-
-module_init(ar7_gpio_char_init);
-module_exit(ar7_gpio_char_exit);