Пример #1
0
static int exynos_dp_detect_hpd(struct exynos_dp_device *dp)
{
	int timeout_loop = 0;

	while (exynos_dp_get_plug_in_status(dp) != 0) {
		timeout_loop++;
		if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
			dev_err(dp->dev, "failed to get hpd plug status\n");
			return -ETIMEDOUT;
		}
		usleep_range(10, 11);
	}

	return 0;
}
Пример #2
0
unsigned int exynos_dp_detect_hpd(void)
{
	int timeout_loop = DP_TIMEOUT_LOOP_COUNT;

	mdelay(2);

	while (exynos_dp_get_plug_in_status() != 0) {
		if (timeout_loop == 0)
			return -1;
		mdelay(1);
		timeout_loop--;
	}

	return EXYNOS_DP_SUCCESS;
}