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Diffstat (limited to 'arch/blackfin/kernel/bfin_gpio.c')
-rw-r--r--arch/blackfin/kernel/bfin_gpio.c19
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;