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authorJim Cromie <jim.cromie@gmail.com>2006-06-27 02:54:20 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 17:32:43 -0700
commit0e41ef3c51ea7dbb764616f60a90700647fc8518 (patch)
treefc55403cca82ed01da9d6a7fadbaf4329cf9beb2 /drivers/char/nsc_gpio.c
parent1a66fdf083bf2b60c4d12feb970bc7373b59e33a (diff)
downloadlinux-0e41ef3c51ea7dbb764616f60a90700647fc8518.tar.gz
[PATCH] chardev: GPIO for SCx200 & PC-8736x: migrate gpio_dump to common module
Since the meaning of config-bits is the same for scx200 and pc8736x _gpios, we can share a function to deliver this to user. Since it is called via the vtable, its also completely replaceable. For now, we keep using printk... 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.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/char/nsc_gpio.c b/drivers/char/nsc_gpio.c
index 3842c272711..72b0a5791ed 100644
--- a/drivers/char/nsc_gpio.c
+++ b/drivers/char/nsc_gpio.c
@@ -19,6 +19,19 @@
#define NAME "nsc_gpio"
+void nsc_gpio_dump(unsigned index, u32 config)
+{
+ printk(KERN_INFO NAME ": GPIO-%02u: 0x%08lx %s %s %s %s %s %s %s\n",
+ index, (unsigned long)config,
+ (config & 1) ? "OE" : "TS", /* output-enabled/tristate */
+ (config & 2) ? "PP" : "OD", /* push pull / open drain */
+ (config & 4) ? "PUE" : "PUD", /* pull up enabled/disabled */
+ (config & 8) ? "LOCKED" : "", /* locked / unlocked */
+ (config & 16) ? "LEVEL" : "EDGE",/* level/edge input */
+ (config & 32) ? "HI" : "LO", /* trigger on rise/fall edge */
+ (config & 64) ? "DEBOUNCE" : ""); /* debounce */
+}
+
ssize_t nsc_gpio_write(struct file *file, const char __user *data,
size_t len, loff_t *ppos)
{
@@ -99,9 +112,10 @@ ssize_t nsc_gpio_read(struct file *file, char __user * buf,
return 1;
}
-/* common routines for both scx200_gpio and pc87360_gpio */
+/* common file-ops routines for both scx200_gpio and pc87360_gpio */
EXPORT_SYMBOL(nsc_gpio_write);
EXPORT_SYMBOL(nsc_gpio_read);
+EXPORT_SYMBOL(nsc_gpio_dump);
static int __init nsc_gpio_init(void)
{