[Gc-linux-cvs] linux/include/asm-generic gpio.h,1.1,1.2

[Albert H. <he...@us...>]

Update of /cvsroot/gc-linux/linux/include/asm-generic
In directory ddv4jf1.ch3.sourceforge.com:/tmp/cvs-serv503/include/asm-generic

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/asm-generic/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 18:33:59 -0000	1.2
***************
*** 114,117 ****
--- 114,118 ----
  extern int gpio_direction_input(unsigned gpio);
  extern int gpio_direction_output(unsigned gpio, int value);
+ extern int gpio_direction_is_output(unsigned gpio);
  
  extern int gpio_get_value_cansleep(unsigned gpio);