static int check_reserved(struct udevice *dev, unsigned offset,
const char *func)
{
if (!get_gpio_flag(dev, offset, GPIOF_RESERVED)) {
printf("sandbox_gpio: %s: error: offset %u not reserved\n",
func, offset);
return -1;
}
return 0;
}
static int sb_gpio_get_state(struct udevice *dev, unsigned int offset,
char *buf, int bufsize)
{
struct gpio_dev_priv *uc_priv = dev->uclass_priv;
struct gpio_state *state = dev_get_priv(dev);
const char *label;
label = state[offset].label;
snprintf(buf, bufsize, "%s%d: %s: %d [%c]%s%s",
uc_priv->bank_name ? uc_priv->bank_name : "", offset,
sandbox_gpio_get_direction(dev, offset) ? "out" : " in",
sandbox_gpio_get_value(dev, offset),
get_gpio_flag(dev, offset, GPIOF_RESERVED) ? 'x' : ' ',
label ? " " : "",
label ? label : "");
return 0;
}
static int sb_gpio_request(struct udevice *dev, unsigned offset,
const char *label)
{
struct gpio_dev_priv *uc_priv = dev->uclass_priv;
struct gpio_state *state = dev_get_priv(dev);
debug("%s: offset:%u, label:%s\n", __func__, offset, label);
if (offset >= uc_priv->gpio_count) {
printf("sandbox_gpio: error: invalid gpio %u\n", offset);
return -1;
}
if (get_gpio_flag(dev, offset, GPIOF_RESERVED)) {
printf("sandbox_gpio: error: gpio %u already reserved\n",
offset);
return -1;
}
state[offset].label = label;
return set_gpio_flag(dev, offset, GPIOF_RESERVED, 1);
}
int sandbox_gpio_get_direction(struct udevice *dev, unsigned offset)
{
return get_gpio_flag(dev, offset, GPIOF_OUTPUT);
}
int sandbox_gpio_get_value(struct udevice *dev, unsigned offset)
{
if (get_gpio_flag(dev, offset, GPIOF_OUTPUT))
debug("sandbox_gpio: get_value on output gpio %u\n", offset);
return get_gpio_flag(dev, offset, GPIOF_HIGH);
}
static int sb_gpio_get_function(struct udevice *dev, unsigned offset)
{
if (get_gpio_flag(dev, offset, GPIOF_OUTPUT))
return GPIOF_OUTPUT;
return GPIOF_INPUT;
}
