Jim Cromie | 1ca5df0 | 2006-06-27 02:54:19 -0700 | [diff] [blame^] | 1 | /* linux/drivers/char/nsc_gpio.c |
| 2 | |
| 3 | National Semiconductor common GPIO device-file/VFS methods. |
| 4 | Allows a user space process to control the GPIO pins. |
| 5 | |
| 6 | Copyright (c) 2001,2002 Christer Weinigel <wingel@nano-system.com> |
| 7 | Copyright (c) 2005 Jim Cromie <jim.cromie@gmail.com> |
| 8 | */ |
| 9 | |
| 10 | #include <linux/config.h> |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/errno.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/nsc_gpio.h> |
| 17 | #include <asm/uaccess.h> |
| 18 | #include <asm/io.h> |
| 19 | |
| 20 | #define NAME "nsc_gpio" |
| 21 | |
| 22 | MODULE_AUTHOR("Jim Cromie <jim.cromie@gmail.com>"); |
| 23 | MODULE_DESCRIPTION("NatSemi GPIO Common Methods"); |
| 24 | MODULE_LICENSE("GPL"); |
| 25 | |
| 26 | static int __init nsc_gpio_init(void) |
| 27 | { |
| 28 | printk(KERN_DEBUG NAME " initializing\n"); |
| 29 | return 0; |
| 30 | } |
| 31 | |
| 32 | static void __exit nsc_gpio_cleanup(void) |
| 33 | { |
| 34 | printk(KERN_DEBUG NAME " cleanup\n"); |
| 35 | } |
| 36 | |
| 37 | /* prepare for |
| 38 | common routines for both scx200_gpio and pc87360_gpio |
| 39 | EXPORT_SYMBOL(scx200_gpio_write); |
| 40 | EXPORT_SYMBOL(scx200_gpio_read); |
| 41 | EXPORT_SYMBOL(scx200_gpio_release); |
| 42 | */ |
| 43 | |
| 44 | module_init(nsc_gpio_init); |
| 45 | module_exit(nsc_gpio_cleanup); |