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authorDavid Brownell <dbrownell@users.sourceforge.net>2008-12-10 17:35:26 -0800
committerTony Lindgren <tony@atomide.com>2008-12-10 17:35:26 -0800
commite918edf7c2f2270dcf18cdcbdf86174a013a124e (patch)
tree36a5d45c3795ac188e32c09b427fa67068d6cacd /arch/arm/plat-omap
parent40e3925ba15b604c9ff87154d77a914221d11cdc (diff)
ARM: OMAP: switch to gpio_direction_output
More conversion to the standard GPIO interfaces: stop using omap_set_gpio_direction() entirely, and switch over to the gpio_direction_output() call. Note that because gpio_direction_output() includes the initial value, this change isn't quite transparent. - For the call sites which defined an initial value either before or after setting the direction, that value was used. When that value was previously assigned afterwards, this could eliminate a brief output glitch ... and possibly change behavior. In a few cases (LCDs) several values were assigned together ... those were re-arranged to match the explicit sequence provided. - Some call sites didn't define such a value; so I chose an initial "off/reset" value that seemed to default to "off". In short, files touched by this patch might notice some small changes in startup behavior (with trivial fixes). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap')
-rw-r--r--arch/arm/plat-omap/gpio.c14
-rw-r--r--arch/arm/plat-omap/include/mach/gpio.h1
2 files changed, 0 insertions, 15 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index c0322b56efe..a6dbef47603 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -333,19 +333,6 @@ static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
__raw_writel(l, reg);
}
-void omap_set_gpio_direction(int gpio, int is_input)
-{
- struct gpio_bank *bank;
- unsigned long flags;
-
- if (check_gpio(gpio) < 0)
- return;
- bank = get_gpio_bank(gpio);
- spin_lock_irqsave(&bank->lock, flags);
- _set_gpio_direction(bank, get_gpio_index(gpio), is_input);
- spin_unlock_irqrestore(&bank->lock, flags);
-}
-
static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable)
{
void __iomem *reg = bank->base;
@@ -1741,7 +1728,6 @@ static int __init omap_gpio_sysinit(void)
EXPORT_SYMBOL(omap_request_gpio);
EXPORT_SYMBOL(omap_free_gpio);
-EXPORT_SYMBOL(omap_set_gpio_direction);
arch_initcall(omap_gpio_sysinit);
diff --git a/arch/arm/plat-omap/include/mach/gpio.h b/arch/arm/plat-omap/include/mach/gpio.h
index d91ba328a30..552ad0c0ac4 100644
--- a/arch/arm/plat-omap/include/mach/gpio.h
+++ b/arch/arm/plat-omap/include/mach/gpio.h
@@ -73,7 +73,6 @@
extern int omap_gpio_init(void); /* Call from board init only */
extern int omap_request_gpio(int gpio);
extern void omap_free_gpio(int gpio);
-extern void omap_set_gpio_direction(int gpio, int is_input);
extern void omap2_gpio_prepare_for_retention(void);
extern void omap2_gpio_resume_after_retention(void);
extern void omap_set_gpio_debounce(int gpio, int enable);