diff options
Diffstat (limited to 'arch/mips/basler/excite/excite_iodev.c')
| -rw-r--r-- | arch/mips/basler/excite/excite_iodev.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/arch/mips/basler/excite/excite_iodev.c b/arch/mips/basler/excite/excite_iodev.c deleted file mode 100644 index 938b1d0b765..00000000000 --- a/arch/mips/basler/excite/excite_iodev.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * Copyright (C) 2005 by Basler Vision Technologies AG - * Author: Thomas Koeller <thomas.koeller@baslerweb.com> - * - * 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, MA 02111-1307 USA - */ - -#include <linux/compiler.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/wait.h> -#include <linux/poll.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/miscdevice.h> -#include <linux/smp_lock.h> - -#include "excite_iodev.h" - - - -static const struct resource *iodev_get_resource(struct platform_device *, const char *, unsigned int); -static int __init iodev_probe(struct platform_device *); -static int __exit iodev_remove(struct platform_device *); -static int iodev_open(struct inode *, struct file *); -static int iodev_release(struct inode *, struct file *); -static ssize_t iodev_read(struct file *, char __user *, size_t s, loff_t *); -static unsigned int iodev_poll(struct file *, struct poll_table_struct *); -static irqreturn_t iodev_irqhdl(int, void *); - - - -static const char iodev_name[] = "iodev"; -static unsigned int iodev_irq; -static DECLARE_WAIT_QUEUE_HEAD(wq); - - - -static const struct file_operations fops = -{ - .owner = THIS_MODULE, - .open = iodev_open, - .release = iodev_release, - .read = iodev_read, - .poll = iodev_poll -}; - -static struct miscdevice miscdev = -{ - .minor = MISC_DYNAMIC_MINOR, - .name = iodev_name, - .fops = &fops -}; - -static struct platform_driver iodev_driver = { - .driver = { - .name = iodev_name, - .owner = THIS_MODULE, - }, - .probe = iodev_probe, - .remove = __devexit_p(iodev_remove), -}; - - - -static const struct resource * -iodev_get_resource(struct platform_device *pdv, const char *name, - unsigned int type) -{ - char buf[80]; - if (snprintf(buf, sizeof buf, "%s_0", name) >= sizeof buf) - return NULL; - return platform_get_resource_byname(pdv, type, buf); -} - - - -/* No hotplugging on the platform bus - use __init */ -static int __init iodev_probe(struct platform_device *dev) -{ - const struct resource * const ri = - iodev_get_resource(dev, IODEV_RESOURCE_IRQ, IORESOURCE_IRQ); - - if (unlikely(!ri)) - return -ENXIO; - - iodev_irq = ri->start; - return misc_register(&miscdev); -} - - - -static int __exit iodev_remove(struct platform_device *dev) -{ - return misc_deregister(&miscdev); -} - -static int iodev_open(struct inode *i, struct file *f) -{ - int ret; - - ret = request_irq(iodev_irq, iodev_irqhdl, IRQF_DISABLED, - iodev_name, &miscdev); - - return ret; -} - -static int iodev_release(struct inode *i, struct file *f) -{ - free_irq(iodev_irq, &miscdev); - return 0; -} - - - - -static ssize_t -iodev_read(struct file *f, char __user *d, size_t s, loff_t *o) -{ - ssize_t ret; - DEFINE_WAIT(w); - - prepare_to_wait(&wq, &w, TASK_INTERRUPTIBLE); - if (!signal_pending(current)) - schedule(); - ret = signal_pending(current) ? -ERESTARTSYS : 0; - finish_wait(&wq, &w); - return ret; -} - - -static unsigned int iodev_poll(struct file *f, struct poll_table_struct *p) -{ - poll_wait(f, &wq, p); - return POLLOUT | POLLWRNORM; -} - -static irqreturn_t iodev_irqhdl(int irq, void *ctxt) -{ - wake_up(&wq); - - return IRQ_HANDLED; -} - -static int __init iodev_init_module(void) -{ - return platform_driver_register(&iodev_driver); -} - - - -static void __exit iodev_cleanup_module(void) -{ - platform_driver_unregister(&iodev_driver); -} - -module_init(iodev_init_module); -module_exit(iodev_cleanup_module); - - - -MODULE_AUTHOR("Thomas Koeller <thomas.koeller@baslerweb.com>"); -MODULE_DESCRIPTION("Basler eXcite i/o interrupt handler"); -MODULE_VERSION("0.0"); -MODULE_LICENSE("GPL"); |