C++ (Cpp) pwc_isoc_init Examples

Example #1

File: pwc-if.c Project: AK101111/linux

static int start_streaming(struct vb2_queue *vq, unsigned int count)
{
	struct pwc_device *pdev = vb2_get_drv_priv(vq);
	int r;

	if (!pdev->udev)
		return -ENODEV;

	if (mutex_lock_interruptible(&pdev->v4l2_lock))
		return -ERESTARTSYS;
	/* Turn on camera and set LEDS on */
	pwc_camera_power(pdev, 1);
	pwc_set_leds(pdev, leds[0], leds[1]);

	r = pwc_isoc_init(pdev);
	if (r) {
		/* If we failed turn camera and LEDS back off */
		pwc_set_leds(pdev, 0, 0);
		pwc_camera_power(pdev, 0);
		/* And cleanup any queued bufs!! */
		pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_QUEUED);
	}
	mutex_unlock(&pdev->v4l2_lock);

	return r;
}

Example #2

File: pwc-if.c Project: Apaisal/linux

static int start_streaming(struct vb2_queue *vq, unsigned int count)
{
	struct pwc_device *pdev = vb2_get_drv_priv(vq);
	int r;

	mutex_lock(&pdev->udevlock);
	if (!pdev->udev) {
		r = -ENODEV;
		goto leave;
	}

	/* Turn on camera and set LEDS on */
	pwc_camera_power(pdev, 1);
	pwc_set_leds(pdev, led_on, led_off);

	r = pwc_isoc_init(pdev);
	if (r) {
		/* If we failed turn camera and LEDS back off */
		pwc_set_leds(pdev, 0, 0);
		pwc_camera_power(pdev, 0);
		/* And cleanup any queued bufs!! */
		pwc_cleanup_queued_bufs(pdev);
	}
leave:
	mutex_unlock(&pdev->udevlock);
	return r;
}