/*
* GENERIC_GPIO primitives.
*/
int gpio_direction_input(unsigned pin)
{
unsigned long flags;
if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) {
pr_debug("%s: invalid GPIO %d\n", __func__, pin);
return -EINVAL;
}
spin_lock_irqsave(&gpio_lock, flags);
/*
* Some callers might not have used gpio_request(),
* so flag this pin as requested now.
*/
if (gpio_label[pin] == NULL)
gpio_label[pin] = "?";
/*
* Configure GPIO direction.
*/
__set_direction(pin, 1);
spin_unlock_irqrestore(&gpio_lock, flags);
return 0;
}
/*
* Orion-specific GPIO API extensions.
*/
void __init orion_gpio_set_unused(unsigned pin)
{
/*
* Configure as output, drive low.
*/
__set_level(pin, 0);
__set_direction(pin, 0);
}
/*
* GENERIC_GPIO primitives.
*/
int kw_gpio_direction_input(unsigned pin)
{
if (kw_gpio_is_valid(pin, GPIO_INPUT_OK) != 0)
return 1;
/* Configure GPIO direction. */
__set_direction(pin, 1);
return 0;
}
static int orion_gpio_direction_input(struct gpio_chip *chip, unsigned pin)
{
unsigned long flags;
if (!orion_gpio_is_valid(pin, GPIO_INPUT_OK))
return -EINVAL;
spin_lock_irqsave(&gpio_lock, flags);
/* Configure GPIO direction. */
__set_direction(pin, 1);
spin_unlock_irqrestore(&gpio_lock, flags);
return 0;
}
int kw_gpio_direction_output(unsigned pin, int value)
{
if (kw_gpio_is_valid(pin, GPIO_OUTPUT_OK) != 0)
{
printf("%s: invalid GPIO %d\n", __func__, pin);
return 1;
}
__set_blinking(pin, 0);
/* Configure GPIO output value. */
__set_level(pin, value);
/* Configure GPIO direction. */
__set_direction(pin, 0);
return 0;
}
int gpio_direction_output(unsigned pin, int value)
{
unsigned long flags;
u32 u;
if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) {
pr_debug("%s: invalid GPIO %d\n", __func__, pin);
return -EINVAL;
}
spin_lock_irqsave(&gpio_lock, flags);
/*
* Some callers might not have used gpio_request(),
* so flag this pin as requested now.
*/
if (gpio_label[pin] == NULL)
gpio_label[pin] = "?";
/*
* Disable blinking.
*/
u = readl(GPIO_BLINK_EN(pin));
u &= ~(1 << (pin & 31));
writel(u, GPIO_BLINK_EN(pin));
/*
* Configure GPIO output value.
*/
__set_level(pin, value);
/*
* Configure GPIO direction.
*/
__set_direction(pin, 0);
spin_unlock_irqrestore(&gpio_lock, flags);
return 0;
}
static int orion_gpio_direction_output(struct gpio_chip *chip, unsigned pin,
int value)
{
unsigned long flags;
if (!orion_gpio_is_valid(pin, GPIO_OUTPUT_OK))
return -EINVAL;
spin_lock_irqsave(&gpio_lock, flags);
/* Disable blinking. */
__set_blinking(pin, 0);
/* Configure GPIO output value. */
__set_level(pin, value);
/* Configure GPIO direction. */
__set_direction(pin, 0);
spin_unlock_irqrestore(&gpio_lock, flags);
return 0;
}
