From 5b7e42b2d38e4c4d0cb105a2ad83d43f6957f59e Mon Sep 17 00:00:00 2001
From: Philipp Zabel <philipp.zabel@gmail.com>
Date: Tue, 20 Feb 2007 13:58:20 -0800
Subject: [PATCH] [PATCH] GPIO API: SA1100 wrapper cleanup
Based on the discussion last december (http://lkml.org/lkml/2006/12/20/241),
this patch
- adds gpio_direction_input/output functions to
generic.c instead of making them inline,
- fixes comment and includes and uses inline functions
instead of macros in gpio.h
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
arch/arm/mach-sa1100/generic.c | 30 ++++++++++++++++++++++++++
include/asm-arm/arch-sa1100/gpio.h | 34 ++++++++++++------------------
2 files changed, 44 insertions(+), 20 deletions(-)
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index e510295c2580d..192a5a26cf2b4 100644
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -138,6 +138,36 @@ unsigned long long sched_clock(void)
return v;
}
+int gpio_direction_input(unsigned gpio)
+{
+ unsigned long flags;
+
+ if (gpio > GPIO_MAX)
+ return -EINVAL;
+
+ local_irq_save(flags);
+ GPDR &= ~GPIO_GPIO(gpio);
+ local_irq_restore(flags);
+ return 0;
+}
+
+EXPORT_SYMBOL(gpio_direction_input);
+
+int gpio_direction_output(unsigned gpio)
+{
+ unsigned long flags;
+
+ if (gpio > GPIO_MAX)
+ return -EINVAL;
+
+ local_irq_save(flags);
+ GPDR |= GPIO_GPIO(gpio);
+ local_irq_restore(flags);
+ return 0;
+}
+
+EXPORT_SYMBOL(gpio_direction_output);
+
/*
* Default power-off for SA1100
*/
diff --git a/include/asm-arm/arch-sa1100/gpio.h b/include/asm-arm/arch-sa1100/gpio.h
index a331fe3f6e48b..da7575b0e5d0f 100644
--- a/include/asm-arm/arch-sa1100/gpio.h
+++ b/include/asm-arm/arch-sa1100/gpio.h
@@ -1,5 +1,5 @@
/*
- * linux/include/asm-arm/arch-pxa/gpio.h
+ * linux/include/asm-arm/arch-sa1100/gpio.h
*
* SA1100 GPIO wrappers for arch-neutral GPIO calls
*
@@ -24,11 +24,8 @@
#ifndef __ASM_ARCH_SA1100_GPIO_H
#define __ASM_ARCH_SA1100_GPIO_H
-#include <asm/arch/SA-1100.h>
-#include <asm/arch/irqs.h>
-#include <asm/arch/hardware.h>
-
-#include <asm/errno.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
static inline int gpio_request(unsigned gpio, const char *label)
{
@@ -40,26 +37,23 @@ static inline void gpio_free(unsigned gpio)
return;
}
-static inline int gpio_direction_input(unsigned gpio)
+extern int gpio_direction_input(unsigned gpio);
+extern int gpio_direction_output(unsigned gpio);
+
+
+static inline int gpio_get_value(unsigned gpio)
{
- if (gpio > GPIO_MAX)
- return -EINVAL;
- GPDR = (GPDR_In << gpio) 0
+ return GPLR & GPIO_GPIO(gpio);
}
-static inline int gpio_direction_output(unsigned gpio)
+static inline void gpio_set_value(unsigned gpio, int value)
{
- if (gpio > GPIO_MAX)
- return -EINVAL;
- GPDR = (GPDR_Out << gpio) 0
+ if (value)
+ GPSR = GPIO_GPIO(gpio);
+ else
+ GPCR = GPIO_GPIO(gpio);
}
-#define gpio_get_value(gpio) \
- (GPLR & GPIO_GPIO(gpio))
-
-#define gpio_set_value(gpio,value) \
- ((value) ? (GPSR = GPIO_GPIO(gpio)) : (GPCR(gpio) = GPIO_GPIO(gpio)))
-
#include <asm-generic/gpio.h> /* cansleep wrappers */
static inline unsigned gpio_to_irq(unsigned gpio)
--
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