Merge tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - videobuf2 was moved to a media/common dir, as it is now used by the
   DVB subsystem too

 - Digital TV core memory mapped support interface

 - new sensor driver: ov7740

 - several improvements at ddbridge driver

 - new V4L2 driver: IPU3 CIO2 CSI-2 receiver unit, found on some Intel
   SoCs

 - new tuner driver: tda18250

 - finally got rid of all LIRC staging drivers

 - as we don't have old lirc drivers anymore, restruct the lirc device
   code

 - add support for UVC metadata

 - add a new staging driver for NVIDIA Tegra Video Decoder Engine

 - DVB kAPI headers moved to include/media

 - synchronize the kAPI and uAPI for the DVB subsystem, removing the gap
   for non-legacy APIs

 - reduce the kAPI gap for V4L2

 - lots of other driver enhancements, cleanups, etc.

* tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (407 commits)
  media: v4l2-compat-ioctl32.c: make ctrl_is_pointer work for subdevs
  media: v4l2-compat-ioctl32.c: refactor compat ioctl32 logic
  media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors
  media: v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type
  media: v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32
  media: v4l2-compat-ioctl32.c: fix ctrl_is_pointer
  media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32
  media: v4l2-compat-ioctl32.c: avoid sizeof(type)
  media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32
  media: v4l2-compat-ioctl32.c: fix the indentation
  media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF
  media: v4l2-ioctl.c: don't copy back the result for -ENOTTY
  media: v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt
  media: vivid: fix module load error when enabling fb and no_error_inj=1
  media: dvb_demux: improve debug messages
  media: dvb_demux: Better handle discontinuity errors
  media: cxusb, dib0700: ignore XC2028_I2C_FLUSH
  media: ts2020: avoid integer overflows on 32 bit machines
  media: i2c: ov7740: use gpio/consumer.h instead of gpio.h
  media: entity: Add a nop variant of media_entity_cleanup
  ...

1 files changed, 37 insertions, 7 deletions

diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
index 692c463f14f7..fecccb5e7628 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -79,8 +79,19 @@ static int uvc_queue_setup(struct vb2_queue *vq,
 			   unsigned int sizes[], struct device *alloc_devs[])
 {
 	struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
-	struct uvc_streaming *stream = uvc_queue_to_stream(queue);
-	unsigned size = stream->ctrl.dwMaxVideoFrameSize;
+	struct uvc_streaming *stream;
+	unsigned int size;
+
+	switch (vq->type) {
+	case V4L2_BUF_TYPE_META_CAPTURE:
+		size = UVC_METATADA_BUF_SIZE;
+		break;
+
+	default:
+		stream = uvc_queue_to_stream(queue);
+		size = stream->ctrl.dwMaxVideoFrameSize;
+		break;
+	}
 
 	/*
 	 * When called with plane sizes, validate them. The driver supports
@@ -114,7 +125,7 @@ static int uvc_buffer_prepare(struct vb2_buffer *vb)
 	buf->error = 0;
 	buf->mem = vb2_plane_vaddr(vb, 0);
 	buf->length = vb2_plane_size(vb, 0);
-	if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+	if (vb->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 		buf->bytesused = 0;
 	else
 		buf->bytesused = vb2_get_plane_payload(vb, 0);
@@ -177,10 +188,10 @@ static int uvc_start_streaming(struct vb2_queue *vq, unsigned int count)
 static void uvc_stop_streaming(struct vb2_queue *vq)
 {
 	struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
-	struct uvc_streaming *stream = uvc_queue_to_stream(queue);
 	unsigned long flags;
 
-	uvc_video_enable(stream, 0);
+	if (vq->type != V4L2_BUF_TYPE_META_CAPTURE)
+		uvc_video_enable(uvc_queue_to_stream(queue), 0);
 
 	spin_lock_irqsave(&queue->irqlock, flags);
 	uvc_queue_return_buffers(queue, UVC_BUF_STATE_ERROR);
@@ -198,20 +209,39 @@ static const struct vb2_ops uvc_queue_qops = {
 	.stop_streaming = uvc_stop_streaming,
 };
 
+static const struct vb2_ops uvc_meta_queue_qops = {
+	.queue_setup = uvc_queue_setup,
+	.buf_prepare = uvc_buffer_prepare,
+	.buf_queue = uvc_buffer_queue,
+	.wait_prepare = vb2_ops_wait_prepare,
+	.wait_finish = vb2_ops_wait_finish,
+	.stop_streaming = uvc_stop_streaming,
+};
+
 int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type,
 		    int drop_corrupted)
 {
 	int ret;
 
 	queue->queue.type = type;
-	queue->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+	queue->queue.io_modes = VB2_MMAP | VB2_USERPTR;
 	queue->queue.drv_priv = queue;
 	queue->queue.buf_struct_size = sizeof(struct uvc_buffer);
-	queue->queue.ops = &uvc_queue_qops;
 	queue->queue.mem_ops = &vb2_vmalloc_memops;
 	queue->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC
 		| V4L2_BUF_FLAG_TSTAMP_SRC_SOE;
 	queue->queue.lock = &queue->mutex;
+
+	switch (type) {
+	case V4L2_BUF_TYPE_META_CAPTURE:
+		queue->queue.ops = &uvc_meta_queue_qops;
+		break;
+	default:
+		queue->queue.io_modes |= VB2_DMABUF;
+		queue->queue.ops = &uvc_queue_qops;
+		break;
+	}
+
 	ret = vb2_queue_init(&queue->queue);
 	if (ret)
 		return ret;