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authorJim Cromie <jim.cromie@gmail.com>2006-06-27 02:54:19 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 17:32:42 -0700
commit1ca5df0a4cbd17a9536e63c5f69d4717c6538eb0 (patch)
tree8986bbadc721599a0751b8ec6488f22bac2ce4a6 /drivers/char/nsc_gpio.c
parentc3dc8071eedaac8c8a05c30fe20b78452a818dd9 (diff)
downloadlinux-1ca5df0a4cbd17a9536e63c5f69d4717c6538eb0.tar.gz
[PATCH] chardev: GPIO for SCx200 & PC-8736x: add empty common-module
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>
Diffstat (limited to 'drivers/char/nsc_gpio.c')
-rw-r--r--drivers/char/nsc_gpio.c45
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);