diff options
| author | Philipp Zabel <philipp.zabel@gmail.com> | 2007-02-20 13:58:20 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-20 17:10:16 -0800 |
| commit | 5b7e42b2d38e4c4d0cb105a2ad83d43f6957f59e (patch) | |
| tree | 76758cee84ef63ab138943a2597b645ce58462cb /arch | |
| parent | adff264fe66d78a166dc887f861e7273d0cb1654 (diff) | |
[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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-sa1100/generic.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index e510295c258..192a5a26cf2 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 */ |