[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>

2 files changed, 17 insertions, 3 deletions

diff --git a/drivers/char/nsc_gpio.c b/drivers/char/nsc_gpio.c
index 3842c2727118..72b0a5791ed8 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)
 {
diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c
index eb9a84777598..442367b3f5dc 100644
--- a/drivers/char/scx200_gpio.c
+++ b/drivers/char/scx200_gpio.c
@@ -35,7 +35,7 @@ static int major = 0;		/* default to dynamic major */
 module_param(major, int, 0);
 MODULE_PARM_DESC(major, "Major device number");
 
-extern void scx200_gpio_dump(unsigned index);
+extern void nsc_gpio_dump(unsigned index);
 
 extern ssize_t nsc_gpio_write(struct file *file, const char __user *data,
                               size_t len, loff_t *ppos);
@@ -46,7 +46,7 @@ extern ssize_t nsc_gpio_read(struct file *file, char __user *buf,
 struct nsc_gpio_ops scx200_access = {
         .owner          = THIS_MODULE,
         .gpio_config    = scx200_gpio_configure,
-        .gpio_dump      = scx200_gpio_dump,
+        .gpio_dump      = nsc_gpio_dump,
         .gpio_get       = scx200_gpio_get,
         .gpio_set       = scx200_gpio_set,
         .gpio_set_high  = scx200_gpio_set_high,