Update of /cvsroot/gc-linux/linux/include/linux
In directory ddv4jf1.ch3.sourceforge.com:/tmp/cvs-serv503/include/linux
Modified Files:
gpio.h
Log Message:
[PATCH] gpiolib: add gpio_direction_is_output
From: Albert Herranz <alb...@ya...>
Date: Sun, 1 Mar 2009 19:10:07 +0100
Subject: [PATCH] gpiolib: add gpio_direction_is_output
Add a function to determine if a given gpio has been already configured
as an output.
This is handy for drivers that require changing multiple times the direction
of a gpio and want to easily avoid redundant direction changes.
Signed-off-by: Albert Herranz <alb...@ya...>
Index: gpio.h
===================================================================
RCS file: /cvsroot/gc-linux/linux/include/linux/gpio.h,v
retrieving revision 1.1
retrieving revision 1.2
diff -C2 -d -r1.1 -r1.2
*** gpio.h 2 Mar 2009 18:33:09 -0000 1.1
--- gpio.h 2 Mar 2009 18:34:00 -0000 1.2
***************
*** 50,53 ****
--- 50,58 ----
}
+ static inline int gpio_direction_is_output(unsigned gpio)
+ {
+ return -EINVAL;
+ }
+
static inline int gpio_get_value(unsigned gpio)
{
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