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| author | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-11 14:36:25 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-11 14:36:25 +0100 |
| commit | a8931ef380c92d121ae74ecfb03b2d63f72eea6f (patch) | |
| tree | 980fb6b019e11e6cb1ece55b7faff184721a8053 /arch/blackfin/kernel/bfin_gpio.c | |
| parent | 90574d0a4d4b73308ae54a2a57a4f3f1fa98e984 (diff) | |
| parent | e5a5816f7875207cb0a0a7032e39a4686c5e10a4 (diff) | |
| download | olio-linux-3.10-a8931ef380c92d121ae74ecfb03b2d63f72eea6f.tar.xz olio-linux-3.10-a8931ef380c92d121ae74ecfb03b2d63f72eea6f.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/blackfin/kernel/bfin_gpio.c')
| -rw-r--r-- | arch/blackfin/kernel/bfin_gpio.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index 7e8eaf4a31b..b6d89d1644c 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -1130,6 +1130,25 @@ void bfin_gpio_irq_prepare(unsigned gpio) #else +int gpio_get_value(unsigned gpio) +{ + unsigned long flags; + int ret; + + if (unlikely(get_gpio_edge(gpio))) { + local_irq_save(flags); + set_gpio_edge(gpio, 0); + ret = get_gpio_data(gpio); + set_gpio_edge(gpio, 1); + local_irq_restore(flags); + + return ret; + } else + return get_gpio_data(gpio); +} +EXPORT_SYMBOL(gpio_get_value); + + int gpio_direction_input(unsigned gpio) { unsigned long flags; |