Release 4.7 arch/sh/boards/mach-landisk/gio.c
/*
* arch/sh/boards/landisk/gio.c - driver for landisk
*
* This driver will also support the I-O DATA Device, Inc. LANDISK Board.
* LANDISK and USL-5P Button, LED and GIO driver drive function.
*
* Copylight (C) 2006 kogiidena
* Copylight (C) 2002 Atom Create Engineering Co., Ltd. *
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kdev_t.h>
#include <linux/cdev.h>
#include <linux/fs.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <mach-landisk/mach/gio.h>
#include <mach-landisk/mach/iodata_landisk.h>
#define DEVCOUNT 4
#define GIO_MINOR 2
/* GIO minor no. */
static dev_t dev;
static struct cdev *cdev_p;
static int openCnt;
static int gio_open(struct inode *inode, struct file *filp)
{
int minor;
int ret = -ENOENT;
preempt_disable();
minor = MINOR(inode->i_rdev);
if (minor < DEVCOUNT) {
if (openCnt > 0) {
ret = -EALREADY;
} else {
openCnt++;
ret = 0;
}
}
preempt_enable();
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kogiidena | kogiidena | 55 | 74.32% | 1 | 33.33% |
| jonathan corbet | jonathan corbet | 17 | 22.97% | 1 | 33.33% |
| thomas gleixner | thomas gleixner | 2 | 2.70% | 1 | 33.33% |
| Total | 74 | 100.00% | 3 | 100.00% |
static int gio_close(struct inode *inode, struct file *filp)
{
int minor;
minor = MINOR(inode->i_rdev);
if (minor < DEVCOUNT) {
openCnt--;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kogiidena | kogiidena | 42 | 100.00% | 1 | 100.00% |
| Total | 42 | 100.00% | 1 | 100.00% |
static long gio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
unsigned int data;
static unsigned int addr = 0;
if (cmd & 0x01) { /* write */
if (copy_from_user(&data, (int *)arg, sizeof(int))) {
return -EFAULT;
}
}
switch (cmd) {
case GIODRV_IOCSGIOSETADDR: /* address set */
addr = data;
break;
case GIODRV_IOCSGIODATA1: /* write byte */
__raw_writeb((unsigned char)(0x0ff & data), addr);
break;
case GIODRV_IOCSGIODATA2: /* write word */
if (addr & 0x01) {
return -EFAULT;
}
__raw_writew((unsigned short int)(0x0ffff & data), addr);
break;
case GIODRV_IOCSGIODATA4: /* write long */
if (addr & 0x03) {
return -EFAULT;
}
__raw_writel(data, addr);
break;
case GIODRV_IOCGGIODATA1: /* read byte */
data = __raw_readb(addr);
break;
case GIODRV_IOCGGIODATA2: /* read word */
if (addr & 0x01) {
return -EFAULT;
}
data = __raw_readw(addr);
break;
case GIODRV_IOCGGIODATA4: /* read long */
if (addr & 0x03) {
return -EFAULT;
}
data = __raw_readl(addr);
break;
default:
return -EFAULT;
break;
}
if ((cmd & 0x01) == 0) { /* read */
if (copy_to_user((int *)arg, &data, sizeof(int))) {
return -EFAULT;
}
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kogiidena | kogiidena | 255 | 96.96% | 1 | 25.00% |
| paul mundt | paul mundt | 6 | 2.28% | 1 | 25.00% |
| thomas gleixner | thomas gleixner | 1 | 0.38% | 1 | 25.00% |
| simon arlott | simon arlott | 1 | 0.38% | 1 | 25.00% |
| Total | 263 | 100.00% | 4 | 100.00% |
static const struct file_operations gio_fops = {
.owner = THIS_MODULE,
.open = gio_open, /* open */
.release = gio_close, /* release */
.unlocked_ioctl = gio_ioctl,
.llseek = noop_llseek,
};
static int __init gio_init(void)
{
int error;
printk(KERN_INFO "gio: driver initialized\n");
openCnt = 0;
if ((error = alloc_chrdev_region(&dev, 0, DEVCOUNT, "gio")) < 0) {
printk(KERN_ERR
"gio: Couldn't alloc_chrdev_region, error=%d\n",
error);
return 1;
}
cdev_p = cdev_alloc();
cdev_p->ops = &gio_fops;
error = cdev_add(cdev_p, dev, DEVCOUNT);
if (error) {
printk(KERN_ERR
"gio: Couldn't cdev_add, error=%d\n", error);
return 1;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kogiidena | kogiidena | 98 | 100.00% | 1 | 100.00% |
| Total | 98 | 100.00% | 1 | 100.00% |
static void __exit gio_exit(void)
{
cdev_del(cdev_p);
unregister_chrdev_region(dev, DEVCOUNT);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kogiidena | kogiidena | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
module_init(gio_init);
module_exit(gio_exit);
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kogiidena | kogiidena | 562 | 93.82% | 1 | 12.50% |
| jonathan corbet | jonathan corbet | 17 | 2.84% | 1 | 12.50% |
| paul mundt | paul mundt | 8 | 1.34% | 2 | 25.00% |
| thomas gleixner | thomas gleixner | 5 | 0.83% | 1 | 12.50% |
| arnd bergmann | arnd bergmann | 5 | 0.83% | 1 | 12.50% |
| simon arlott | simon arlott | 1 | 0.17% | 1 | 12.50% |
| jan engelhardt | jan engelhardt | 1 | 0.17% | 1 | 12.50% |
| Total | 599 | 100.00% | 8 | 100.00% |
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