Commit 45abc49d authored by Sonic Zhang's avatar Sonic Zhang Committed by Bob Liu

blackfin: GPIO: Implement more GPIO APIs

Implement more GPIO APIs in case GPIOLIB is disabled.
Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
parent 494b7948
......@@ -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);
......
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