diff options
Diffstat (limited to 'drivers/char/nsc_gpio.c')
-rw-r--r-- | drivers/char/nsc_gpio.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/char/nsc_gpio.c b/drivers/char/nsc_gpio.c new file mode 100644 index 00000000000..42d95904967 --- /dev/null +++ b/drivers/char/nsc_gpio.c @@ -0,0 +1,45 @@ +/* linux/drivers/char/nsc_gpio.c + + National Semiconductor common GPIO device-file/VFS methods. + Allows a user space process to control the GPIO pins. + + Copyright (c) 2001,2002 Christer Weinigel <wingel@nano-system.com> + Copyright (c) 2005 Jim Cromie <jim.cromie@gmail.com> +*/ + +#include <linux/config.h> +#include <linux/fs.h> +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/nsc_gpio.h> +#include <asm/uaccess.h> +#include <asm/io.h> + +#define NAME "nsc_gpio" + +MODULE_AUTHOR("Jim Cromie <jim.cromie@gmail.com>"); +MODULE_DESCRIPTION("NatSemi GPIO Common Methods"); +MODULE_LICENSE("GPL"); + +static int __init nsc_gpio_init(void) +{ + printk(KERN_DEBUG NAME " initializing\n"); + return 0; +} + +static void __exit nsc_gpio_cleanup(void) +{ + printk(KERN_DEBUG NAME " cleanup\n"); +} + +/* prepare for + common routines for both scx200_gpio and pc87360_gpio +EXPORT_SYMBOL(scx200_gpio_write); +EXPORT_SYMBOL(scx200_gpio_read); +EXPORT_SYMBOL(scx200_gpio_release); +*/ + +module_init(nsc_gpio_init); +module_exit(nsc_gpio_cleanup); |