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Diffstat (limited to 'arch/blackfin/include/asm/gpio.h')
-rw-r--r--arch/blackfin/include/asm/gpio.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/gpio.h b/arch/blackfin/include/asm/gpio.h
index 12d3571..3d84d96 100644
--- a/arch/blackfin/include/asm/gpio.h
+++ b/arch/blackfin/include/asm/gpio.h
@@ -26,6 +26,7 @@
#ifndef __ASSEMBLY__
#include <linux/compiler.h>
+#include <linux/gpio.h>
/***********************************************************
*
@@ -244,6 +245,49 @@ static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
return -EINVAL;
}
+static inline int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
+{
+ int err;
+
+ err = bfin_gpio_request(gpio, label);
+ if (err)
+ return err;
+
+ if (flags & GPIOF_DIR_IN)
+ err = bfin_gpio_direction_input(gpio);
+ else
+ err = bfin_gpio_direction_output(gpio,
+ (flags & GPIOF_INIT_HIGH) ? 1 : 0);
+
+ if (err)
+ bfin_gpio_free(gpio);
+
+ return err;
+}
+
+static inline int gpio_request_array(const struct gpio *array, size_t num)
+{
+ int i, err;
+
+ for (i = 0; i < num; i++, array++) {
+ err = gpio_request_one(array->gpio, array->flags, array->label);
+ if (err)
+ goto err_free;
+ }
+ return 0;
+
+err_free:
+ while (i--)
+ bfin_gpio_free((--array)->gpio);
+ return err;
+}
+
+static inline void gpio_free_array(const struct gpio *array, size_t num)
+{
+ while (num--)
+ bfin_gpio_free((array++)->gpio);
+}
+
static inline int __gpio_get_value(unsigned gpio)
{
return bfin_gpio_get_value(gpio);