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[PATCH] chardev: GPIO for SCx200 & PC-8736x: add empty common-module

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Add the nsc_gpio common-support module as an empty shell.  Next patch starts
the migration of the common gpio support routines.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jim Cromie 2006-06-27 02:54:19 -07:00 committed by Linus Torvalds
parent c3dc8071ee
commit 1ca5df0a4c
2 changed files with 46 additions and 1 deletions
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2
drivers/char/Makefile
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@ -81,7 +81,7 @@ obj-$(CONFIG_COBALT_LCD) += lcd.o
obj-$(CONFIG_PPDEV) += ppdev.o
obj-$(CONFIG_NWBUTTON) += nwbutton.o
obj-$(CONFIG_NWFLASH) += nwflash.o
obj-$(CONFIG_SCx200_GPIO) += scx200_gpio.o
obj-$(CONFIG_SCx200_GPIO) += scx200_gpio.o nsc_gpio.o
obj-$(CONFIG_CS5535_GPIO) += cs5535_gpio.o
obj-$(CONFIG_GPIO_VR41XX) += vr41xx_giu.o
obj-$(CONFIG_TANBAC_TB0219) += tb0219.o

45
drivers/char/nsc_gpio.c Normal file
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@ -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);