[PATCH 5/5] [media] cxusb: add analog mode support for Medion MD95700

["Maciej S. Szmigiero" <mail@maciej.szmigiero.name>]

This patch adds support for analog part of Medion 95700 in the cxusb
driver.

What works:
* Video capture at various sizes with sequential fields,
* Input switching (TV Tuner, Composite, S-Video),
* TV and radio tuning,
* Video standard switching and auto detection,
* Radio mode switching (stereo / mono),
* Unplugging while capturing,
* DVB / analog coexistence,
* Raw BT.656 stream support.

What does not work yet:
* Audio,
* VBI,
* Picture controls.

Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
---
 drivers/media/usb/dvb-usb/Kconfig        |    8 +-
 drivers/media/usb/dvb-usb/Makefile       |    2 +-
 drivers/media/usb/dvb-usb/cxusb-analog.c | 1867 ++++++++++++++++++++++++++++++
 drivers/media/usb/dvb-usb/cxusb.c        |  453 +++++++-
 drivers/media/usb/dvb-usb/cxusb.h        |  137 +++
 drivers/media/usb/dvb-usb/dvb-usb-dvb.c  |   20 +-
 drivers/media/usb/dvb-usb/dvb-usb-init.c |   13 +
 drivers/media/usb/dvb-usb/dvb-usb.h      |    8 +
 8 files changed, 2449 insertions(+), 59 deletions(-)
 create mode 100644 drivers/media/usb/dvb-usb/cxusb-analog.c

diff --git a/drivers/media/usb/dvb-usb/Kconfig b/drivers/media/usb/dvb-usb/Kconfig
index 959fa09dfd92..ba941069ae3b 100644
--- a/drivers/media/usb/dvb-usb/Kconfig
+++ b/drivers/media/usb/dvb-usb/Kconfig
@@ -118,7 +118,9 @@ config DVB_USB_UMT_010
 
 config DVB_USB_CXUSB
 	tristate "Conexant USB2.0 hybrid reference design support"
-	depends on DVB_USB
+	depends on DVB_USB && VIDEO_V4L2
+	select VIDEO_CX25840
+	select VIDEOBUF2_VMALLOC
 	select DVB_PLL if MEDIA_SUBDRV_AUTOSELECT
 	select DVB_CX22702 if MEDIA_SUBDRV_AUTOSELECT
 	select DVB_LGDT330X if MEDIA_SUBDRV_AUTOSELECT
@@ -136,8 +138,8 @@ config DVB_USB_CXUSB
 	select MEDIA_TUNER_SI2157 if MEDIA_SUBDRV_AUTOSELECT
 	help
 	  Say Y here to support the Conexant USB2.0 hybrid reference design.
-	  Currently, only DVB and ATSC modes are supported, analog mode
-	  shall be added in the future. Devices that require this module:
+	  DVB and ATSC modes are supported, with basic analog mode support
+	  for Medion MD95700. Devices that require this module:
 
 	  Medion MD95700 hybrid USB2.0 device.
 	  DViCO FusionHDTV (Bluebird) USB2.0 devices
diff --git a/drivers/media/usb/dvb-usb/Makefile b/drivers/media/usb/dvb-usb/Makefile
index 3b3f32b426d1..24d222e9acc7 100644
--- a/drivers/media/usb/dvb-usb/Makefile
+++ b/drivers/media/usb/dvb-usb/Makefile
@@ -40,7 +40,7 @@ obj-$(CONFIG_DVB_USB_M920X) += dvb-usb-m920x.o
 dvb-usb-digitv-objs := digitv.o
 obj-$(CONFIG_DVB_USB_DIGITV) += dvb-usb-digitv.o
 
-dvb-usb-cxusb-objs := cxusb.o
+dvb-usb-cxusb-objs := cxusb.o cxusb-analog.o
 obj-$(CONFIG_DVB_USB_CXUSB) += dvb-usb-cxusb.o
 
 dvb-usb-ttusb2-objs := ttusb2.o
diff --git a/drivers/media/usb/dvb-usb/cxusb-analog.c b/drivers/media/usb/dvb-usb/cxusb-analog.c
new file mode 100644
index 000000000000..473d3f06145f
--- /dev/null
+++ b/drivers/media/usb/dvb-usb/cxusb-analog.c
@@ -0,0 +1,1867 @@
+/* DVB USB compliant linux driver for Conexant USB reference design -
+ * (analog part).
+ *
+ * Copyright (C) 2011, 2017 Maciej S. Szmigiero (mail@maciej.szmigiero.name)
+ *
+ * TODO:
+ *  * audio support,
+ *  * finish radio support (requires audio of course),
+ *  * VBI support,
+ *  * controls support
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ */
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timekeeping.h>
+#include <linux/vmalloc.h>
+#include <media/drv-intf/cx25840.h>
+#include <media/tuner.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-subdev.h>
+#include <media/videobuf2-v4l2.h>
+#include <media/videobuf2-vmalloc.h>
+
+#include "cxusb.h"
+
+static int cxusb_medion_v_queue_setup(struct vb2_queue *q,
+				      unsigned int *num_buffers,
+				      unsigned int *num_planes,
+				      unsigned int sizes[],
+				      struct device *alloc_devs[])
+{
+	struct dvb_usb_device *dvbdev = vb2_get_drv_priv(q);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	unsigned int size = cxdev->raw_mode ?
+		CXUSB_VIDEO_MAX_FRAME_SIZE :
+		cxdev->width * cxdev->height * 2;
+
+	if (*num_planes > 0) {
+		if (*num_planes != 1)
+			return -EINVAL;
+
+		if (sizes[0] < size)
+			return -EINVAL;
+	} else {
+		*num_planes = 1;
+		sizes[0] = size;
+	}
+
+	if (q->num_buffers + *num_buffers < 6)
+		*num_buffers = 6 - q->num_buffers;
+
+	return 0;
+}
+
+static int cxusb_medion_v_buf_init(struct vb2_buffer *vb)
+{
+	struct dvb_usb_device *dvbdev = vb2_get_drv_priv(vb->vb2_queue);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	cxusb_vprintk(dvbdev, OPS, "buffer init\n");
+
+	if (cxdev->raw_mode) {
+		if (vb2_plane_size(vb, 0) < CXUSB_VIDEO_MAX_FRAME_SIZE)
+			return -ENOMEM;
+	} else {
+		if (vb2_plane_size(vb, 0) < cxdev->width * cxdev->height * 2)
+			return -ENOMEM;
+	}
+
+	cxusb_vprintk(dvbdev, OPS, "buffer OK\n");
+
+	return 0;
+}
+
+static void cxusb_auxbuf_init(struct cxusb_medion_auxbuf *auxbuf,
+			      u8 *buf, unsigned int len)
+{
+	auxbuf->buf = buf;
+	auxbuf->len = len;
+	auxbuf->paylen = 0;
+}
+
+static void cxusb_auxbuf_head_trim(struct dvb_usb_device *dvbdev,
+				   struct cxusb_medion_auxbuf *auxbuf,
+				   unsigned int pos)
+{
+	if (pos == 0)
+		return;
+
+	if (WARN_ON(pos > auxbuf->paylen))
+		return;
+
+	cxusb_vprintk(dvbdev, AUXB,
+		      "trimming auxbuf len by %u to %u\n",
+		      pos, auxbuf->paylen - pos);
+
+	memmove(auxbuf->buf, auxbuf->buf + pos, auxbuf->paylen - pos);
+	auxbuf->paylen -= pos;
+}
+
+static unsigned int cxusb_auxbuf_paylen(struct cxusb_medion_auxbuf *auxbuf)
+{
+	return auxbuf->paylen;
+}
+
+static bool cxusb_auxbuf_make_space(struct dvb_usb_device *dvbdev,
+				    struct cxusb_medion_auxbuf *auxbuf,
+				    unsigned int howmuch)
+{
+	unsigned int freespace;
+
+	if (WARN_ON(howmuch >= auxbuf->len))
+		howmuch = auxbuf->len - 1;
+
+	freespace = auxbuf->len -
+		cxusb_auxbuf_paylen(auxbuf);
+
+	cxusb_vprintk(dvbdev, AUXB, "freespace is %u\n", freespace);
+
+	if (freespace >= howmuch)
+		return true;
+
+	howmuch -= freespace;
+
+	cxusb_vprintk(dvbdev, AUXB, "will overwrite %u bytes of buffer\n",
+		      howmuch);
+
+	cxusb_auxbuf_head_trim(dvbdev, auxbuf, howmuch);
+
+	return false;
+}
+
+/* returns false if some data was overwritten */
+static bool cxusb_auxbuf_append_urb(struct dvb_usb_device *dvbdev,
+				    struct cxusb_medion_auxbuf *auxbuf,
+				    struct urb *urb,
+				    unsigned int len)
+{
+	int i;
+	bool ret;
+
+	ret = cxusb_auxbuf_make_space(dvbdev, auxbuf, len);
+
+	for (i = 0; i < urb->number_of_packets; i++) {
+		unsigned int to_copy;
+
+		to_copy = urb->iso_frame_desc[i].actual_length;
+
+		if (to_copy == 0)
+			continue;
+
+		memcpy(auxbuf->buf + auxbuf->paylen, urb->transfer_buffer +
+		       urb->iso_frame_desc[i].offset, to_copy);
+
+		auxbuf->paylen += to_copy;
+	}
+
+	return ret;
+}
+
+static bool cxusb_auxbuf_copy(struct cxusb_medion_auxbuf *auxbuf,
+			      unsigned int pos, unsigned char *dest,
+			      unsigned int len)
+{
+	if (pos+len > auxbuf->paylen)
+		return false;
+
+	memcpy(dest, auxbuf->buf + pos, len);
+
+	return true;
+}
+
+static unsigned int cxusb_auxbuf_advance(struct cxusb_medion_auxbuf *auxbuf,
+					 unsigned int pos,
+					 unsigned int increment)
+{
+	return pos + increment;
+}
+
+static unsigned int cxusb_auxbuf_begin(struct cxusb_medion_auxbuf *auxbuf)
+{
+	return 0;
+}
+
+static bool cxusb_auxbuf_isend(struct cxusb_medion_auxbuf *auxbuf,
+			       unsigned int pos)
+{
+	return pos >= auxbuf->paylen;
+}
+
+static bool cxusb_medion_copy_field(struct dvb_usb_device *dvbdev,
+				    struct cxusb_medion_auxbuf *auxbuf,
+				    struct cxusb_bt656_params *bt656,
+				    bool firstfield,
+				    unsigned int maxlines,
+				    unsigned int maxlinesamples)
+{
+	while (bt656->line < maxlines &&
+	       !cxusb_auxbuf_isend(auxbuf, bt656->pos)) {
+
+		unsigned char val;
+
+		if (!cxusb_auxbuf_copy(auxbuf, bt656->pos, &val, 1))
+			return false;
+
+		if ((char)val == CXUSB_BT656_COMMON[0]) {
+			char buf[3];
+
+			if (!cxusb_auxbuf_copy(auxbuf, bt656->pos + 1,
+					       buf, 3))
+				return false;
+
+			if (buf[0] != (CXUSB_BT656_COMMON)[1] ||
+			    buf[1] != (CXUSB_BT656_COMMON)[2])
+				goto normal_sample;
+
+			if (bt656->line != 0 && (!!firstfield !=
+						 ((buf[2] & CXUSB_FIELD_MASK)
+						  == CXUSB_FIELD_1))) {
+				if (bt656->fmode == LINE_SAMPLES) {
+					cxusb_vprintk(dvbdev, BT656,
+						      "field %c after line %u field change\n",
+						      firstfield ? '1' : '2',
+						      bt656->line);
+
+					if (bt656->buf != NULL &&
+						maxlinesamples -
+						bt656->linesamples > 0) {
+
+						memset(bt656->buf, 0,
+							maxlinesamples -
+							bt656->linesamples);
+
+						bt656->buf +=
+							maxlinesamples -
+							bt656->linesamples;
+
+						cxusb_vprintk(dvbdev, BT656,
+							      "field %c line %u %u samples still remaining (of %u)\n",
+							      firstfield ?
+							      '1' : '2',
+							      bt656->line,
+							      maxlinesamples -
+							      bt656->
+							      linesamples,
+							      maxlinesamples);
+					}
+
+					bt656->line++;
+				}
+
+				if (maxlines - bt656->line > 0 &&
+					bt656->buf != NULL) {
+					memset(bt656->buf, 0,
+						(maxlines - bt656->line)
+						* maxlinesamples);
+
+					bt656->buf +=
+						(maxlines - bt656->line)
+						* maxlinesamples;
+
+					cxusb_vprintk(dvbdev, BT656,
+						      "field %c %u lines still remaining (of %u)\n",
+						      firstfield ? '1' : '2',
+						      maxlines - bt656->line,
+						      maxlines);
+				}
+
+				return true;
+			}
+
+			if (bt656->fmode == START_SEARCH) {
+				if ((buf[2] & CXUSB_SEAV_MASK) ==
+				    CXUSB_SEAV_SAV &&
+				    (!!firstfield == ((buf[2] &
+						       CXUSB_FIELD_MASK)
+						      == CXUSB_FIELD_1))) {
+
+					if ((buf[2] & CXUSB_VBI_MASK) ==
+					    CXUSB_VBI_OFF) {
+						cxusb_vprintk(dvbdev,
+							      BT656,
+							      "line start @ pos %x\n",
+							      bt656->pos);
+
+						bt656->linesamples = 0;
+						bt656->fmode = LINE_SAMPLES;
+					} else {
+						cxusb_vprintk(dvbdev,
+							      BT656,
+							      "VBI start @ pos %x\n",
+							      bt656->pos);
+
+						bt656->fmode = VBI_SAMPLES;
+					}
+				}
+
+				bt656->pos =
+					cxusb_auxbuf_advance(auxbuf,
+							     bt656->pos, 4);
+				continue;
+			} else if (bt656->fmode == LINE_SAMPLES) {
+				if ((buf[2] & CXUSB_SEAV_MASK) ==
+				    CXUSB_SEAV_SAV)
+					cxusb_vprintk(dvbdev, BT656,
+						      "SAV in line samples @ line %u, pos %x\n",
+						      bt656->line, bt656->pos);
+
+				if (bt656->buf != NULL && maxlinesamples -
+				    bt656->linesamples > 0) {
+
+					memset(bt656->buf, 0,
+					       maxlinesamples -
+					       bt656->linesamples);
+					bt656->buf += maxlinesamples -
+						bt656->linesamples;
+
+					cxusb_vprintk(dvbdev, BT656,
+						      "field %c line %u %u samples still remaining (of %u)\n",
+						      firstfield ? '1' : '2',
+						      bt656->line,
+						      maxlinesamples -
+						      bt656->linesamples,
+						      maxlinesamples);
+				}
+
+
+				bt656->fmode = START_SEARCH;
+				bt656->line++;
+				continue;
+			} else if (bt656->fmode == VBI_SAMPLES) {
+				if ((buf[2] & CXUSB_SEAV_MASK) ==
+				    CXUSB_SEAV_SAV)
+					cxusb_vprintk(dvbdev, BT656,
+						      "SAV in VBI samples @ pos %x\n",
+						      bt656->pos);
+
+				bt656->fmode = START_SEARCH;
+				continue;
+			}
+
+			bt656->pos =
+				cxusb_auxbuf_advance(auxbuf, bt656->pos, 4);
+			continue;
+		}
+
+normal_sample:
+		if (bt656->fmode == START_SEARCH && bt656->line != 0) {
+			unsigned char buf[64];
+			unsigned int idx;
+			unsigned int tocheck = min(sizeof(buf),
+						   max(sizeof(buf),
+						       maxlinesamples / 4));
+
+			if (!cxusb_auxbuf_copy(auxbuf, bt656->pos + 1,
+					       buf, tocheck)) {
+				bt656->pos =
+					cxusb_auxbuf_advance(auxbuf,
+							     bt656->pos, 1);
+				continue;
+			}
+
+			for (idx = 0; idx <= tocheck - 3; idx++)
+				if (memcmp(buf + idx, CXUSB_BT656_COMMON, 3)
+				    == 0)
+					break;
+
+			if (idx <= tocheck - 3) {
+				bt656->pos =
+					cxusb_auxbuf_advance(auxbuf,
+							     bt656->pos, 1);
+				continue;
+			}
+
+			cxusb_vprintk(dvbdev, BT656,
+				      "line %u early start, pos %x\n",
+				      bt656->line, bt656->pos);
+
+			bt656->linesamples = 0;
+			bt656->fmode = LINE_SAMPLES;
+			continue;
+		} else if (bt656->fmode == LINE_SAMPLES) {
+			if (bt656->buf != NULL)
+				*(bt656->buf++) = val;
+
+			bt656->linesamples++;
+			bt656->pos =
+				cxusb_auxbuf_advance(auxbuf,
+						     bt656->pos, 1);
+
+			if (bt656->linesamples >= maxlinesamples) {
+				bt656->fmode = START_SEARCH;
+				bt656->line++;
+			}
+
+			continue;
+		}
+		/* TODO: copy VBI samples */
+
+		bt656->pos =
+			cxusb_auxbuf_advance(auxbuf,
+					     bt656->pos, 1);
+	}
+
+	if (bt656->line < maxlines) {
+		cxusb_vprintk(dvbdev, BT656, "end of buffer, pos = %u\n",
+			      bt656->pos);
+		return false;
+	}
+
+	return true;
+}
+
+static void cxusb_medion_v_complete_work(struct work_struct *work)
+{
+	struct cxusb_medion_dev *cxdev = container_of(work,
+						      struct cxusb_medion_dev,
+						      urbwork);
+	struct dvb_usb_device *dvbdev = cxdev->dvbdev;
+	struct urb *urb;
+	int ret;
+	unsigned int i, urbn;
+
+	mutex_lock(cxdev->videodev->lock);
+
+	cxusb_vprintk(dvbdev, URB, "worker called, streaming = %d\n",
+		      (int)cxdev->streaming);
+
+	if (!cxdev->streaming)
+		goto unlock;
+
+	urbn = cxdev->nexturb;
+	if (test_bit(urbn, &cxdev->urbcomplete)) {
+		urb = cxdev->streamurbs[urbn];
+		clear_bit(urbn, &cxdev->urbcomplete);
+
+		cxdev->nexturb++;
+		cxdev->nexturb %= CXUSB_VIDEO_URBS;
+	} else {
+		for (i = 0, urbn++; i < CXUSB_VIDEO_URBS - 1; i++, urbn++) {
+			urbn %= CXUSB_VIDEO_URBS;
+			if (test_bit(urbn, &cxdev->urbcomplete)) {
+				urb = cxdev->streamurbs[urbn];
+				clear_bit(urbn, &cxdev->urbcomplete);
+				break;
+			}
+		}
+
+		if (i >= CXUSB_VIDEO_URBS - 1) {
+			cxusb_vprintk(dvbdev, URB,
+				      "URB worker called but no URB ready\n");
+			goto unlock;
+		}
+
+		cxusb_vprintk(dvbdev, URB,
+			      "out-of-order URB: expected %u but %u is ready\n",
+			      cxdev->nexturb, urbn);
+
+		cxdev->nexturb = urbn + 1;
+		cxdev->nexturb %= CXUSB_VIDEO_URBS;
+	}
+
+	cxusb_vprintk(dvbdev, URB, "URB %u status = %d\n", urbn, urb->status);
+
+	if (urb->status == 0 || urb->status == -EXDEV) {
+		int i;
+		unsigned long len = 0;
+
+		for (i = 0; i < urb->number_of_packets; i++)
+			len += urb->iso_frame_desc[i].actual_length;
+
+		cxusb_vprintk(dvbdev, URB, "URB %u data len = %lu\n",
+			      urbn, len);
+
+		if (len == 0)
+			goto resubmit;
+
+		if (cxdev->raw_mode) {
+			u8 *buf;
+			struct cxusb_medion_vbuffer *vbuf;
+
+			if (list_empty(&cxdev->buflist)) {
+				dev_warn(&dvbdev->udev->dev,
+					 "no free buffers\n");
+
+				goto resubmit;
+			}
+
+			vbuf = list_first_entry(&cxdev->buflist,
+						struct cxusb_medion_vbuffer,
+						list);
+			list_del(&vbuf->list);
+
+			vbuf->vb2.timestamp = ktime_get_ns();
+
+			buf = vb2_plane_vaddr(&vbuf->vb2, 0);
+
+			for (i = 0; i < urb->number_of_packets; i++) {
+				memcpy(buf, urb->transfer_buffer +
+				       urb->iso_frame_desc[i].offset,
+				       urb->iso_frame_desc[i].actual_length);
+
+				buf += urb->iso_frame_desc[i].actual_length;
+			}
+
+			vb2_set_plane_payload(&vbuf->vb2, 0, len);
+
+			vb2_buffer_done(&vbuf->vb2, VB2_BUF_STATE_DONE);
+		} else {
+			struct cxusb_bt656_params *bt656 = &cxdev->bt656;
+			bool reset;
+
+			cxusb_vprintk(dvbdev, URB, "appending urb\n");
+
+			/*
+			 * append new data to circ. buffer
+			 * overwrite old data if necessary
+			 */
+			reset = !cxusb_auxbuf_append_urb(dvbdev,
+							 &cxdev->auxbuf, urb,
+							 len);
+
+			/*
+			 * if this is a new frame
+			 * fetch a buffer from list
+			 */
+			if (bt656->mode == NEW_FRAME) {
+				if (!list_empty(&cxdev->buflist)) {
+					cxdev->vbuf = list_first_entry(
+						&cxdev->buflist,
+						struct cxusb_medion_vbuffer,
+						list);
+					list_del(&cxdev->vbuf->list);
+
+					cxdev->vbuf->vb2.timestamp =
+						ktime_get_ns();
+				} else
+					dev_warn(&dvbdev->udev->dev,
+						 "no free buffers\n");
+			}
+
+			if (bt656->mode == NEW_FRAME || reset) {
+				bt656->pos =
+					cxusb_auxbuf_begin(&cxdev->auxbuf);
+				bt656->mode = FIRST_FIELD;
+				bt656->fmode = START_SEARCH;
+				bt656->line = 0;
+
+				if (cxdev->vbuf != NULL)
+					bt656->buf = vb2_plane_vaddr(
+						&cxdev->vbuf->vb2, 0);
+			}
+
+			cxusb_vprintk(dvbdev, URB, "auxbuf payload len %u",
+				      cxusb_auxbuf_paylen(&cxdev->auxbuf));
+
+			if (bt656->mode == FIRST_FIELD) {
+				cxusb_vprintk(dvbdev, URB,
+					      "copying field 1\n");
+
+				if (!cxusb_medion_copy_field(
+					    dvbdev, &cxdev->auxbuf,
+					    bt656, true,
+					    cxdev->height / 2,
+					    cxdev->width * 2))
+					goto resubmit;
+
+
+				/*
+				 * do not trim buffer there in case
+				 * we need to reset search later
+				 */
+
+				bt656->mode = SECOND_FIELD;
+				bt656->fmode = START_SEARCH;
+				bt656->line = 0;
+			}
+
+			if (bt656->mode == SECOND_FIELD) {
+				cxusb_vprintk(dvbdev, URB,
+					"copying field 2\n");
+
+				if (!cxusb_medion_copy_field(
+						dvbdev, &cxdev->auxbuf,
+						bt656, false,
+						cxdev->height / 2,
+						cxdev->width * 2))
+					goto resubmit;
+
+				cxusb_auxbuf_head_trim(dvbdev,
+						       &cxdev->auxbuf,
+						       bt656->pos);
+
+				bt656->mode = NEW_FRAME;
+
+				if (cxdev->vbuf != NULL) {
+					vb2_set_plane_payload(
+						&cxdev->vbuf->vb2, 0,
+						cxdev->width *
+						cxdev->height * 2);
+
+					vb2_buffer_done(&cxdev->vbuf->vb2,
+							VB2_BUF_STATE_DONE);
+
+					cxdev->vbuf = NULL;
+					cxdev->bt656.buf = NULL;
+
+					cxusb_vprintk(dvbdev, URB,
+						      "frame done\n");
+				} else
+					cxusb_vprintk(dvbdev, URB,
+						      "frame skipped\n");
+			}
+		}
+	}
+
+resubmit:
+	cxusb_vprintk(dvbdev, URB, "URB %u submit\n", urbn);
+
+	ret = usb_submit_urb(urb, GFP_KERNEL);
+	if (ret != 0)
+		dev_err(&dvbdev->udev->dev,
+			"unable to submit URB (%d), you'll have to restart streaming\n",
+			ret);
+
+	for (i = 0; i < CXUSB_VIDEO_URBS; i++)
+		if (test_bit(i, &cxdev->urbcomplete)) {
+			schedule_work(&cxdev->urbwork);
+			break;
+		}
+
+unlock:
+	mutex_unlock(cxdev->videodev->lock);
+}
+
+static void cxusb_medion_v_complete(struct urb *u)
+{
+	struct dvb_usb_device *dvbdev = u->context;
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	unsigned int i;
+
+	for (i = 0; i < CXUSB_VIDEO_URBS; i++)
+		if (cxdev->streamurbs[i] == u)
+			break;
+
+	if (i >= CXUSB_VIDEO_URBS) {
+		dev_err(&dvbdev->udev->dev,
+			"complete on unknown URB\n");
+		return;
+	}
+
+	cxusb_vprintk(dvbdev, URB, "URB %d complete\n", i);
+
+	set_bit(i, &cxdev->urbcomplete);
+	schedule_work(&cxdev->urbwork);
+}
+
+static bool cxusb_medion_stream_busy(struct cxusb_medion_dev *cxdev)
+{
+	int i;
+
+	if (cxdev->streaming)
+		return true;
+
+	for (i = 0; i < CXUSB_VIDEO_URBS; i++)
+		/*
+		 * not streaming but URB is still active -
+		 * stream is being stopped
+		 */
+		if (cxdev->streamurbs[i] != NULL)
+			return true;
+
+	return false;
+}
+
+static void cxusb_medion_return_buffers(struct cxusb_medion_dev *cxdev,
+					bool requeue)
+{
+	struct cxusb_medion_vbuffer *vbuf, *vbuf_tmp;
+
+	list_for_each_entry_safe(vbuf, vbuf_tmp, &cxdev->buflist,
+				 list) {
+		list_del(&vbuf->list);
+		vb2_buffer_done(&vbuf->vb2, requeue ? VB2_BUF_STATE_QUEUED :
+				VB2_BUF_STATE_ERROR);
+	}
+
+	if (cxdev->vbuf != NULL) {
+		vb2_buffer_done(&cxdev->vbuf->vb2, requeue ?
+				VB2_BUF_STATE_QUEUED :
+				VB2_BUF_STATE_ERROR);
+
+		cxdev->vbuf = NULL;
+		cxdev->bt656.buf = NULL;
+	}
+}
+
+static int cxusb_medion_v_start_streaming(struct vb2_queue *q,
+					  unsigned int count)
+{
+	struct dvb_usb_device *dvbdev = vb2_get_drv_priv(q);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	u8 streamon_params[2] = { 0x03, 0x00 };
+	int npackets, i;
+	int ret;
+
+	cxusb_vprintk(dvbdev, OPS, "should start streaming\n");
+
+	/* already streaming */
+	if (cxdev->streaming)
+		return 0;
+
+	if (cxusb_medion_stream_busy(cxdev)) {
+		ret = -EBUSY;
+		goto ret_retbufs;
+	}
+
+	ret = v4l2_subdev_call(cxdev->cx25840, video, s_stream, 1);
+	if (ret != 0) {
+		dev_err(&dvbdev->udev->dev,
+			"unable to start stream (%d)\n", ret);
+		goto ret_retbufs;
+	}
+
+	ret = cxusb_ctrl_msg(dvbdev, CMD_STREAMING_ON, streamon_params, 2,
+			     NULL, 0);
+	if (ret != 0) {
+		dev_err(&dvbdev->udev->dev,
+			"unable to start streaming (%d)\n", ret);
+		goto ret_unstream_cx;
+	}
+
+	if (cxdev->raw_mode)
+		npackets = CXUSB_VIDEO_MAX_FRAME_PKTS;
+	else {
+		u8 *buf;
+		unsigned int urblen, auxbuflen;
+
+		/* has to be less than full frame size */
+		urblen = (cxdev->width * 2 + 4 + 4) * cxdev->height;
+		npackets = urblen / CXUSB_VIDEO_PKT_SIZE;
+		urblen = npackets * CXUSB_VIDEO_PKT_SIZE;
+
+		auxbuflen = (cxdev->width * 2 + 4 + 4) *
+			(cxdev->height + 50 /* VBI lines */) + urblen;
+
+		buf = vmalloc(auxbuflen);
+		if (buf == NULL) {
+			dev_err(&dvbdev->udev->dev,
+				"cannot allocate auxiliary buffer of %u bytes\n",
+				auxbuflen);
+			ret = -ENOMEM;
+			goto ret_unstream_md;
+		}
+
+		cxusb_auxbuf_init(&cxdev->auxbuf, buf, auxbuflen);
+	}
+
+	for (i = 0; i < CXUSB_VIDEO_URBS; i++) {
+		int framen;
+		u8 *streambuf;
+		struct urb *surb;
+
+		streambuf = kmalloc(npackets * CXUSB_VIDEO_PKT_SIZE,
+				    GFP_KERNEL);
+		if (streambuf == NULL) {
+			if (i == 0) {
+				dev_err(&dvbdev->udev->dev,
+					"cannot allocate stream buffer\n");
+				ret = -ENOMEM;
+				goto ret_freeab;
+			} else
+				break;
+		}
+
+		surb = usb_alloc_urb(npackets, GFP_KERNEL);
+		if (surb == NULL) {
+			dev_err(&dvbdev->udev->dev,
+				"cannot allocate URB %d\n", i);
+
+			kfree(streambuf);
+			ret = -ENOMEM;
+			goto ret_freeu;
+		}
+
+		cxdev->streamurbs[i] = surb;
+		surb->dev = dvbdev->udev;
+		surb->context = dvbdev;
+		surb->pipe = usb_rcvisocpipe(dvbdev->udev, 2);
+
+		surb->interval = 1;
+		surb->transfer_flags = URB_ISO_ASAP;
+
+		surb->transfer_buffer = streambuf;
+
+		surb->complete = cxusb_medion_v_complete;
+		surb->number_of_packets = npackets;
+		surb->transfer_buffer_length = npackets * CXUSB_VIDEO_PKT_SIZE;
+
+		for (framen = 0; framen < npackets; framen++) {
+			surb->iso_frame_desc[framen].offset =
+				CXUSB_VIDEO_PKT_SIZE * framen;
+
+			surb->iso_frame_desc[framen].length =
+				CXUSB_VIDEO_PKT_SIZE;
+		}
+	}
+
+	cxdev->urbcomplete = 0;
+	cxdev->nexturb = 0;
+	cxdev->vbuf = NULL;
+	cxdev->bt656.mode = NEW_FRAME;
+	cxdev->bt656.buf = NULL;
+
+	for (i = 0; i < CXUSB_VIDEO_URBS; i++)
+		if (cxdev->streamurbs[i] != NULL) {
+			ret = usb_submit_urb(cxdev->streamurbs[i],
+					GFP_KERNEL);
+			if (ret != 0)
+				dev_err(&dvbdev->udev->dev,
+					"URB %d submission failed (%d)\n", i,
+					ret);
+		}
+
+	cxdev->streaming = true;
+
+	return 0;
+
+ret_freeu:
+	for (i = 0; i < CXUSB_VIDEO_URBS; i++)
+		if (cxdev->streamurbs[i] != NULL) {
+			kfree(cxdev->streamurbs[i]->transfer_buffer);
+			usb_free_urb(cxdev->streamurbs[i]);
+			cxdev->streamurbs[i] = NULL;
+		}
+
+ret_freeab:
+	if (!cxdev->raw_mode)
+		vfree(cxdev->auxbuf.buf);
+
+ret_unstream_md:
+	cxusb_ctrl_msg(dvbdev, CMD_STREAMING_OFF, NULL, 0, NULL, 0);
+
+ret_unstream_cx:
+	v4l2_subdev_call(cxdev->cx25840, video, s_stream, 0);
+
+ret_retbufs:
+	cxusb_medion_return_buffers(cxdev, true);
+
+	return ret;
+}
+
+static void cxusb_medion_v_stop_streaming(struct vb2_queue *q)
+{
+	struct dvb_usb_device *dvbdev = vb2_get_drv_priv(q);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	int i, ret;
+
+	cxusb_vprintk(dvbdev, OPS, "should stop streaming\n");
+
+	if (!cxdev->streaming)
+		return;
+
+	cxdev->streaming = false;
+
+	cxusb_ctrl_msg(dvbdev, CMD_STREAMING_OFF, NULL, 0, NULL, 0);
+
+	ret = v4l2_subdev_call(cxdev->cx25840, video, s_stream, 0);
+	if (ret != 0)
+		dev_err(&dvbdev->udev->dev, "unable to stop stream (%d)\n",
+			ret);
+
+	/* let URB completion run */
+	mutex_unlock(cxdev->videodev->lock);
+
+	for (i = 0; i < CXUSB_VIDEO_URBS; i++)
+		if (cxdev->streamurbs[i] != NULL)
+			usb_kill_urb(cxdev->streamurbs[i]);
+
+	flush_work(&cxdev->urbwork);
+
+	mutex_lock(cxdev->videodev->lock);
+
+	/* free transfer buffer and URB */
+	if (!cxdev->raw_mode)
+		vfree(cxdev->auxbuf.buf);
+
+	for (i = 0; i < CXUSB_VIDEO_URBS; i++)
+		if (cxdev->streamurbs[i] != NULL) {
+			kfree(cxdev->streamurbs[i]->transfer_buffer);
+			usb_free_urb(cxdev->streamurbs[i]);
+			cxdev->streamurbs[i] = NULL;
+		}
+
+	cxusb_medion_return_buffers(cxdev, false);
+}
+
+static void cxusub_medion_v_buf_queue(struct vb2_buffer *vb)
+{
+	struct cxusb_medion_vbuffer *vbuf =
+		container_of(vb, struct cxusb_medion_vbuffer, vb2);
+	struct dvb_usb_device *dvbdev = vb2_get_drv_priv(vb->vb2_queue);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	/* cxusb_vprintk(dvbdev, OPS, "mmmm.. fresh buffer...\n"); */
+
+	list_add_tail(&vbuf->list, &cxdev->buflist);
+}
+
+static void cxusub_medion_v_wait_prepare(struct vb2_queue *q)
+{
+	struct dvb_usb_device *dvbdev = vb2_get_drv_priv(q);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	mutex_unlock(cxdev->videodev->lock);
+}
+
+static void cxusub_medion_v_wait_finish(struct vb2_queue *q)
+{
+	struct dvb_usb_device *dvbdev = vb2_get_drv_priv(q);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	mutex_lock(cxdev->videodev->lock);
+}
+
+static const struct vb2_ops cxdev_video_qops = {
+	.queue_setup = cxusb_medion_v_queue_setup,
+	.buf_init = cxusb_medion_v_buf_init,
+	.start_streaming = cxusb_medion_v_start_streaming,
+	.stop_streaming = cxusb_medion_v_stop_streaming,
+	.buf_queue = cxusub_medion_v_buf_queue,
+	.wait_prepare = cxusub_medion_v_wait_prepare,
+	.wait_finish = cxusub_medion_v_wait_finish
+};
+
+static int cxusb_medion_v_querycap(struct file *file, void *fh,
+				   struct v4l2_capability *cap)
+{
+	const __u32 videocaps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
+		V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
+	const __u32 radiocaps = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct video_device *vdev = video_devdata(file);
+
+	strncpy(cap->driver, dvbdev->udev->dev.driver->name,
+		sizeof(cap->driver) - 1);
+	strcpy(cap->card, "Medion 95700");
+	usb_make_path(dvbdev->udev, cap->bus_info, sizeof(cap->bus_info));
+
+	if (vdev->vfl_type == VFL_TYPE_GRABBER)
+		cap->device_caps = videocaps;
+	else
+		cap->device_caps = radiocaps;
+
+	cap->capabilities = videocaps | radiocaps | V4L2_CAP_DEVICE_CAPS;
+
+	memset(cap->reserved, 0, sizeof(cap->reserved));
+
+	return 0;
+}
+
+static int cxusb_medion_v_enum_fmt_vid_cap(struct file *file, void *fh,
+					   struct v4l2_fmtdesc *f)
+{
+	if (f->index != 0)
+		return -EINVAL;
+
+	f->flags = 0;
+	strcpy(f->description, "YUV 4:2:2");
+	f->pixelformat = V4L2_PIX_FMT_UYVY;
+	memset(f->reserved, 0, sizeof(f->reserved));
+
+	return 0;
+}
+
+static int cxusb_medion_g_fmt_vid_cap(struct file *file, void *fh,
+				      struct v4l2_format *f)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	f->fmt.pix.width = cxdev->width;
+	f->fmt.pix.height = cxdev->height;
+	f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
+	f->fmt.pix.field = V4L2_FIELD_SEQ_TB;
+	f->fmt.pix.bytesperline = cxdev->raw_mode ? 0 : cxdev->width * 2;
+	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+	f->fmt.pix.sizeimage =
+		cxdev->raw_mode ? CXUSB_VIDEO_MAX_FRAME_SIZE :
+		f->fmt.pix.bytesperline * f->fmt.pix.height;
+	f->fmt.pix.priv = 0;
+
+	return 0;
+}
+
+static int cxusb_medion_g_parm(struct file *file, void *fh,
+			       struct v4l2_streamparm *param)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	if (param->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
+
+	memset(&param->parm.capture, 0, sizeof(param->parm.capture));
+
+	if (cxdev->raw_mode)
+		param->parm.capture.extendedmode |=
+			CXUSB_EXTENDEDMODE_CAPTURE_RAW;
+
+	param->parm.capture.readbuffers = 1;
+
+	return 0;
+}
+
+static int cxusb_medion_s_parm(struct file *file, void *fh,
+			       struct v4l2_streamparm *param)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	bool want_raw;
+
+	if (param->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
+
+	want_raw = param->parm.capture.extendedmode &
+		CXUSB_EXTENDEDMODE_CAPTURE_RAW;
+
+	if (want_raw != cxdev->raw_mode) {
+		if (cxusb_medion_stream_busy(cxdev) ||
+		    vb2_is_busy(&cxdev->videoqueue))
+			return -EBUSY;
+
+		cxdev->raw_mode = want_raw;
+	}
+
+	param->parm.capture.readbuffers = 1;
+
+	return 0;
+}
+
+static int cxusb_medion_try_s_fmt_vid_cap(struct file *file,
+					  struct v4l2_format *f,
+					  bool isset)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	struct v4l2_subdev_format subfmt;
+	int ret;
+
+	if (isset && (cxusb_medion_stream_busy(cxdev) ||
+		      vb2_is_busy(&cxdev->videoqueue)))
+		return -EBUSY;
+
+	memset(&subfmt, 0, sizeof(subfmt));
+	subfmt.which = isset ? V4L2_SUBDEV_FORMAT_ACTIVE :
+		V4L2_SUBDEV_FORMAT_TRY;
+	subfmt.format.width = f->fmt.pix.width & ~1;
+	subfmt.format.height = f->fmt.pix.height & ~1;
+	subfmt.format.code = MEDIA_BUS_FMT_FIXED;
+	subfmt.format.field = V4L2_FIELD_SEQ_TB;
+	subfmt.format.colorspace = V4L2_COLORSPACE_SMPTE170M;
+
+	ret = v4l2_subdev_call(cxdev->cx25840, pad, set_fmt, NULL, &subfmt);
+	if (ret != 0) {
+		if (ret != -ERANGE)
+			return ret;
+
+		/* try some common formats */
+		subfmt.format.width = 720;
+		subfmt.format.height = 576;
+		ret = v4l2_subdev_call(cxdev->cx25840, pad, set_fmt, NULL,
+				       &subfmt);
+		if (ret != 0) {
+			if (ret != -ERANGE)
+				return ret;
+
+			subfmt.format.width = 640;
+			subfmt.format.height = 480;
+			ret = v4l2_subdev_call(cxdev->cx25840, pad, set_fmt,
+					       NULL, &subfmt);
+			if (ret != 0)
+				return ret;
+		}
+	}
+
+	f->fmt.pix.width = subfmt.format.width;
+	f->fmt.pix.height = subfmt.format.height;
+	f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
+	f->fmt.pix.field = V4L2_FIELD_SEQ_TB;
+	f->fmt.pix.bytesperline = cxdev->raw_mode ? 0 : f->fmt.pix.width * 2;
+	f->fmt.pix.sizeimage =
+		cxdev->raw_mode ? CXUSB_VIDEO_MAX_FRAME_SIZE :
+		f->fmt.pix.bytesperline * f->fmt.pix.height;
+	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+	f->fmt.pix.priv = 0;
+
+	if (isset) {
+		cxdev->width = f->fmt.pix.width;
+		cxdev->height = f->fmt.pix.height;
+	}
+
+	return 0;
+}
+
+static int cxusb_medion_try_fmt_vid_cap(struct file *file, void *fh,
+					struct v4l2_format *f)
+{
+	return cxusb_medion_try_s_fmt_vid_cap(file, f, false);
+}
+
+static int cxusb_medion_s_fmt_vid_cap(struct file *file, void *fh,
+				      struct v4l2_format *f)
+{
+	return cxusb_medion_try_s_fmt_vid_cap(file, f, true);
+}
+
+static const struct {
+	struct v4l2_input input;
+	u32 inputcfg;
+} cxusb_medion_inputs[] = {
+	{ .input = { .name = "TV tuner", .type = V4L2_INPUT_TYPE_TUNER,
+		     .tuner = 0, .std = V4L2_STD_PAL },
+	  .inputcfg = CX25840_COMPOSITE2, },
+
+	{  .input = { .name = "Composite", .type = V4L2_INPUT_TYPE_CAMERA,
+		     .std = V4L2_STD_ALL },
+	   .inputcfg = CX25840_COMPOSITE1, },
+
+	{  .input = { .name = "S-Video", .type = V4L2_INPUT_TYPE_CAMERA,
+		      .std = V4L2_STD_ALL },
+	   .inputcfg = CX25840_SVIDEO_LUMA3 | CX25840_SVIDEO_CHROMA4 }
+};
+
+#define CXUSB_INPUT_CNT ARRAY_SIZE(cxusb_medion_inputs)
+
+static int cxusb_medion_enum_input(struct file *file, void *fh,
+				   struct v4l2_input *inp)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	u32 index = inp->index;
+
+	if (index >= CXUSB_INPUT_CNT)
+		return -EINVAL;
+
+	*inp = cxusb_medion_inputs[index].input;
+	inp->index = index;
+	inp->capabilities |= V4L2_IN_CAP_STD;
+
+	if (index == cxdev->input) {
+		int ret;
+		u32 status = 0;
+
+		ret = v4l2_subdev_call(cxdev->cx25840, video, g_input_status,
+				       &status);
+		if (ret != 0)
+			dev_warn(&dvbdev->udev->dev,
+				 "cx25840 input status query failed (%d)\n",
+				 ret);
+		else
+			inp->status = status;
+	}
+
+	return 0;
+}
+
+static int cxusb_medion_g_input(struct file *file, void *fh,
+				unsigned int *i)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	*i = cxdev->input;
+
+	return 0;
+}
+
+static int cxusb_medion_s_input(struct file *file, void *fh,
+				unsigned int i)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	int ret;
+
+	if (i >= CXUSB_INPUT_CNT)
+		return -EINVAL;
+
+	ret = v4l2_subdev_call(cxdev->cx25840, video, s_routing,
+			       cxusb_medion_inputs[i].inputcfg, 0, 0);
+	if (ret != 0)
+		return ret;
+
+	cxdev->input = i;
+
+	return 0;
+}
+
+static int cxusb_medion_g_tuner(struct file *file, void *fh,
+				struct v4l2_tuner *tuner)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	struct video_device *vdev = video_devdata(file);
+	int ret;
+
+	if (tuner->index != 0)
+		return -EINVAL;
+
+	if (vdev->vfl_type == VFL_TYPE_GRABBER)
+		tuner->type = V4L2_TUNER_ANALOG_TV;
+	else
+		tuner->type = V4L2_TUNER_RADIO;
+
+	tuner->capability = 0;
+	tuner->afc = 0;
+
+	/*
+	 * fills:
+	 * always: capability (static), rangelow (static), rangehigh (static)
+	 * radio mode: afc (may fail silently), rxsubchans (static), audmode
+	 */
+	ret = v4l2_subdev_call(cxdev->tda9887, tuner, g_tuner, tuner);
+	if (ret != 0)
+		return ret;
+
+	/*
+	 * fills:
+	 * always: capability (static), rangelow (static), rangehigh (static)
+	 * radio mode: rxsubchans (always stereo), audmode,
+	 * signal (might be wrong)
+	 */
+	ret = v4l2_subdev_call(cxdev->tuner, tuner, g_tuner, tuner);
+	if (ret != 0)
+		return ret;
+
+	tuner->signal = 0;
+
+	/*
+	 * fills: TV mode: capability, rxsubchans, audmode, signal
+	 */
+	ret = v4l2_subdev_call(cxdev->cx25840, tuner, g_tuner, tuner);
+	if (ret != 0)
+		return ret;
+
+	if (vdev->vfl_type == VFL_TYPE_GRABBER)
+		strcpy(tuner->name, "TV tuner");
+	else
+		strcpy(tuner->name, "Radio tuner");
+
+	memset(tuner->reserved, 0, sizeof(tuner->reserved));
+
+	return 0;
+}
+
+static int cxusb_medion_s_tuner(struct file *file, void *fh,
+				const struct v4l2_tuner *tuner)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	struct video_device *vdev = video_devdata(file);
+	int ret;
+
+	if (tuner->index != 0)
+		return -EINVAL;
+
+	ret = v4l2_subdev_call(cxdev->tda9887, tuner, s_tuner, tuner);
+	if (ret != 0)
+		return ret;
+
+	ret = v4l2_subdev_call(cxdev->tuner, tuner, s_tuner, tuner);
+	if (ret != 0)
+		return ret;
+
+	/*
+	 * make sure that cx25840 is in a correct TV / radio mode,
+	 * since calls above may have changed it for tuner / IF demod
+	 */
+	if (vdev->vfl_type == VFL_TYPE_GRABBER)
+		v4l2_subdev_call(cxdev->cx25840, video, s_std, cxdev->norm);
+	else
+		v4l2_subdev_call(cxdev->cx25840, tuner, s_radio);
+
+	return v4l2_subdev_call(cxdev->cx25840, tuner, s_tuner, tuner);
+}
+
+static int cxusb_medion_g_frequency(struct file *file, void *fh,
+				    struct v4l2_frequency *freq)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	if (freq->tuner != 0)
+		return -EINVAL;
+
+	return v4l2_subdev_call(cxdev->tuner, tuner, g_frequency, freq);
+}
+
+static int cxusb_medion_s_frequency(struct file *file, void *fh,
+				    const struct v4l2_frequency *freq)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	struct video_device *vdev = video_devdata(file);
+	int ret;
+
+	if (freq->tuner != 0)
+		return -EINVAL;
+
+	ret = v4l2_subdev_call(cxdev->tda9887, tuner, s_frequency, freq);
+	if (ret != 0)
+		return ret;
+
+	ret = v4l2_subdev_call(cxdev->tuner, tuner, s_frequency, freq);
+	if (ret != 0)
+		return ret;
+
+	/*
+	 * make sure that cx25840 is in a correct TV / radio mode,
+	 * since calls above may have changed it for tuner / IF demod
+	 */
+	if (vdev->vfl_type == VFL_TYPE_GRABBER)
+		v4l2_subdev_call(cxdev->cx25840, video, s_std, cxdev->norm);
+	else
+		v4l2_subdev_call(cxdev->cx25840, tuner, s_radio);
+
+	return v4l2_subdev_call(cxdev->cx25840, tuner, s_frequency, freq);
+}
+
+static int cxusb_medion_g_std(struct file *file, void *fh,
+			      v4l2_std_id *norm)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	int ret;
+
+	ret = v4l2_subdev_call(cxdev->cx25840, video, g_std, norm);
+	if (ret != 0) {
+		cxusb_vprintk(dvbdev, OPS, "cannot get standard for input %u\n",
+			      (unsigned int)cxdev->input);
+
+		return ret;
+	}
+
+	cxusb_vprintk(dvbdev, OPS,
+		      "current standard for input %u is %lx\n",
+		      (unsigned int)cxdev->input,
+		      (unsigned long)*norm);
+
+	if (cxdev->input == 0)
+		/*
+		 * make sure we don't have improper std bits set
+		 * for TV tuner (could happen when no signal was
+		 * present yet after reset)
+		 */
+		*norm &= V4L2_STD_PAL;
+
+	if (*norm == V4L2_STD_UNKNOWN)
+		return -ENODATA;
+
+	return 0;
+}
+
+static int cxusb_medion_s_std(struct file *file, void *fh,
+			      v4l2_std_id norm)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	int ret;
+
+	cxusb_vprintk(dvbdev, OPS,
+		      "trying to set standard for input %u to %lx\n",
+		      (unsigned int)cxdev->input,
+		      (unsigned long)norm);
+
+	/* on composite or S-Video any std is acceptable */
+	if (cxdev->input != 0) {
+		ret = v4l2_subdev_call(cxdev->cx25840, video, s_std, norm);
+		if (ret)
+			return ret;
+
+		goto ret_savenorm;
+	}
+
+	/* TV tuner is only able to demodulate PAL */
+	if ((norm & ~V4L2_STD_PAL) != 0)
+		return -EINVAL;
+
+	/* no autodetection support */
+	if (norm == 0)
+		return -EINVAL;
+
+	ret = v4l2_subdev_call(cxdev->tda9887, video, s_std, norm);
+	if (ret != 0) {
+		dev_err(&dvbdev->udev->dev,
+			"tda9887 norm setup failed (%d)\n",
+			ret);
+		return ret;
+	}
+
+	ret = v4l2_subdev_call(cxdev->tuner, video, s_std, norm);
+	if (ret != 0) {
+		dev_err(&dvbdev->udev->dev,
+			"tuner norm setup failed (%d)\n",
+			ret);
+		return ret;
+	}
+
+	ret = v4l2_subdev_call(cxdev->cx25840, video, s_std, norm);
+	if (ret != 0) {
+		dev_err(&dvbdev->udev->dev,
+			"cx25840 norm setup failed (%d)\n",
+			ret);
+		return ret;
+	}
+
+ret_savenorm:
+	cxdev->norm = norm;
+
+	return 0;
+}
+
+static int cxusb_medion_log_status(struct file *file, void *fh)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(file);
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	v4l2_device_call_all(&cxdev->v4l2dev, 0, core, log_status);
+
+	return 0;
+}
+
+static const struct v4l2_ioctl_ops cxusb_video_ioctl = {
+	.vidioc_querycap = cxusb_medion_v_querycap,
+	.vidioc_enum_fmt_vid_cap = cxusb_medion_v_enum_fmt_vid_cap,
+	.vidioc_g_fmt_vid_cap = cxusb_medion_g_fmt_vid_cap,
+	.vidioc_s_fmt_vid_cap = cxusb_medion_s_fmt_vid_cap,
+	.vidioc_try_fmt_vid_cap = cxusb_medion_try_fmt_vid_cap,
+	.vidioc_enum_input = cxusb_medion_enum_input,
+	.vidioc_g_input = cxusb_medion_g_input,
+	.vidioc_s_input = cxusb_medion_s_input,
+	.vidioc_g_parm = cxusb_medion_g_parm,
+	.vidioc_s_parm = cxusb_medion_s_parm,
+	.vidioc_g_tuner = cxusb_medion_g_tuner,
+	.vidioc_s_tuner = cxusb_medion_s_tuner,
+	.vidioc_g_frequency = cxusb_medion_g_frequency,
+	.vidioc_s_frequency = cxusb_medion_s_frequency,
+	.vidioc_g_std = cxusb_medion_g_std,
+	.vidioc_s_std = cxusb_medion_s_std,
+	.vidioc_log_status = cxusb_medion_log_status,
+	.vidioc_reqbufs = vb2_ioctl_reqbufs,
+	.vidioc_querybuf = vb2_ioctl_querybuf,
+	.vidioc_qbuf = vb2_ioctl_qbuf,
+	.vidioc_dqbuf = vb2_ioctl_dqbuf,
+	.vidioc_create_bufs = vb2_ioctl_create_bufs,
+	.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+	.vidioc_streamon = vb2_ioctl_streamon,
+	.vidioc_streamoff = vb2_ioctl_streamoff
+};
+
+static const struct v4l2_ioctl_ops cxusb_radio_ioctl = {
+	.vidioc_querycap = cxusb_medion_v_querycap,
+	.vidioc_g_tuner = cxusb_medion_g_tuner,
+	.vidioc_s_tuner = cxusb_medion_s_tuner,
+	.vidioc_g_frequency = cxusb_medion_g_frequency,
+	.vidioc_s_frequency = cxusb_medion_s_frequency,
+	.vidioc_log_status = cxusb_medion_log_status
+};
+
+/*
+ * in principle, this should be const, but s_io_pin_config is declared
+ * to take non-const, and gcc complains
+ */
+static struct v4l2_subdev_io_pin_config cxusub_medion_pin_config[] = {
+	{ .pin = CX25840_PIN_DVALID_PRGM0, .function = CX25840_PAD_DEFAULT,
+	  .strength = CX25840_PIN_DRIVE_MEDIUM },
+	{ .pin = CX25840_PIN_PLL_CLK_PRGM7, .function = CX25840_PAD_AUX_PLL },
+	{ .pin = CX25840_PIN_HRESET_PRGM2, .function = CX25840_PAD_ACTIVE,
+	  .strength = CX25840_PIN_DRIVE_MEDIUM }
+};
+
+int cxusb_medion_analog_init(struct dvb_usb_device *dvbdev)
+{
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	u8 tuner_analog_msg_data[] = { 0x9c, 0x60, 0x85, 0x54 };
+	struct i2c_msg tuner_analog_msg = { .addr = 0x61, .flags = 0,
+					    .buf = tuner_analog_msg_data,
+					    .len =
+					    sizeof(tuner_analog_msg_data) };
+	struct v4l2_subdev_format subfmt;
+	int ret;
+
+	/* switch tuner to analog mode so IF demod will become accessible */
+	ret = i2c_transfer(&dvbdev->i2c_adap, &tuner_analog_msg, 1);
+	if (ret != 1)
+		dev_warn(&dvbdev->udev->dev,
+			 "tuner analog switch failed (%d)\n", ret);
+
+	ret = v4l2_subdev_call(cxdev->cx25840, core, load_fw);
+	if (ret != 0)
+		dev_warn(&dvbdev->udev->dev,
+			 "cx25840 fw load failed (%d)\n", ret);
+
+	ret = v4l2_subdev_call(cxdev->cx25840, video, s_routing,
+			       CX25840_COMPOSITE1, 0,
+			       CX25840_VCONFIG_FMT_BT656 |
+			       CX25840_VCONFIG_RES_8BIT |
+			       CX25840_VCONFIG_VBIRAW_DISABLED |
+			       CX25840_VCONFIG_ANCDATA_DISABLED |
+			       CX25840_VCONFIG_ACTIVE_COMPOSITE |
+			       CX25840_VCONFIG_VALID_ANDACTIVE |
+			       CX25840_VCONFIG_HRESETW_NORMAL |
+			       CX25840_VCONFIG_CLKGATE_NONE |
+			       CX25840_VCONFIG_DCMODE_DWORDS);
+	if (ret != 0)
+		dev_warn(&dvbdev->udev->dev,
+			 "cx25840 mode set failed (%d)\n", ret);
+
+	/* composite */
+	cxdev->input = 1;
+	cxdev->norm = 0;
+
+	/* TODO: setup audio samples insertion */
+
+	ret = v4l2_subdev_call(cxdev->cx25840, core, s_io_pin_config,
+			       sizeof(cxusub_medion_pin_config) /
+			       sizeof(cxusub_medion_pin_config[0]),
+			       cxusub_medion_pin_config);
+	if (ret != 0)
+		dev_warn(&dvbdev->udev->dev,
+			"cx25840 pin config failed (%d)\n", ret);
+
+	/* make sure that we aren't in radio mode */
+	v4l2_subdev_call(cxdev->tda9887, video, s_std, V4L2_STD_PAL);
+	v4l2_subdev_call(cxdev->tuner, video, s_std, V4L2_STD_PAL);
+	v4l2_subdev_call(cxdev->cx25840, video, s_std, cxdev->norm);
+
+	memset(&subfmt, 0, sizeof(subfmt));
+	subfmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+	subfmt.format.width = cxdev->width;
+	subfmt.format.height = cxdev->height;
+	subfmt.format.code = MEDIA_BUS_FMT_FIXED;
+	subfmt.format.field = V4L2_FIELD_SEQ_TB;
+	subfmt.format.colorspace = V4L2_COLORSPACE_SMPTE170M;
+
+	ret = v4l2_subdev_call(cxdev->cx25840, pad, set_fmt, NULL, &subfmt);
+	if (ret != 0) {
+		subfmt.format.width = 640;
+		subfmt.format.height = 480;
+		ret = v4l2_subdev_call(cxdev->cx25840, pad, set_fmt, NULL,
+				       &subfmt);
+		if (ret != 0)
+			dev_warn(&dvbdev->udev->dev,
+				 "cx25840 format set failed (%d)\n", ret);
+	}
+
+	if (ret == 0) {
+		cxdev->width = subfmt.format.width;
+		cxdev->height = subfmt.format.height;
+	}
+
+	return 0;
+}
+
+static int cxusb_videoradio_open(struct file *f)
+{
+	struct dvb_usb_device *dvbdev = video_drvdata(f);
+	int ret;
+
+	/*
+	 * no locking needed since this call only modifies analog
+	 * state if there are no other analog handles currenly
+	 * opened so ops done via them cannot create a conflict
+	 */
+	ret = cxusb_medion_get(dvbdev, CXUSB_OPEN_ANALOG);
+	if (ret != 0)
+		return ret;
+
+	ret = v4l2_fh_open(f);
+	if (ret != 0)
+		goto ret_release;
+
+	cxusb_vprintk(dvbdev, OPS, "got open\n");
+
+	return 0;
+
+ret_release:
+	cxusb_medion_put(dvbdev);
+
+	return ret;
+}
+
+static int cxusb_videoradio_release(struct file *f)
+{
+	struct video_device *vdev = video_devdata(f);
+	struct dvb_usb_device *dvbdev = video_drvdata(f);
+	int ret;
+
+	cxusb_vprintk(dvbdev, OPS, "got release\n");
+
+	if (vdev->vfl_type == VFL_TYPE_GRABBER)
+		ret = vb2_fop_release(f);
+	else
+		ret = v4l2_fh_release(f);
+
+	cxusb_medion_put(dvbdev);
+
+	return ret;
+}
+
+static const struct v4l2_file_operations cxusb_video_fops = {
+	.owner = THIS_MODULE,
+	.read = vb2_fop_read,
+	.poll = vb2_fop_poll,
+	.unlocked_ioctl = video_ioctl2,
+	.mmap = vb2_fop_mmap,
+	.open = cxusb_videoradio_open,
+	.release = cxusb_videoradio_release
+};
+
+static const struct v4l2_file_operations cxusb_radio_fops = {
+	.owner = THIS_MODULE,
+	.unlocked_ioctl = video_ioctl2,
+	.open = cxusb_videoradio_open,
+	.release = cxusb_videoradio_release
+};
+
+static void cxusb_medion_v4l2_release(struct v4l2_device *v4l2_dev)
+{
+	struct cxusb_medion_dev *cxdev =
+		container_of(v4l2_dev, struct cxusb_medion_dev, v4l2dev);
+	struct dvb_usb_device *dvbdev = cxdev->dvbdev;
+
+	cxusb_vprintk(dvbdev, OPS, "v4l2 device release\n");
+
+	v4l2_device_unregister(&cxdev->v4l2dev);
+
+	mutex_destroy(&cxdev->dev_lock);
+
+	while (completion_done(&cxdev->v4l2_release))
+		schedule();
+
+	complete(&cxdev->v4l2_release);
+}
+
+static void cxusb_medion_videodev_release(struct video_device *vdev)
+{
+	struct dvb_usb_device *dvbdev = video_get_drvdata(vdev);
+
+	cxusb_vprintk(dvbdev, OPS, "video device release\n");
+
+	vb2_queue_release(vdev->queue);
+
+	video_device_release(vdev);
+}
+
+static int cxusb_medion_register_analog_video(struct dvb_usb_device *dvbdev)
+{
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	int ret;
+
+	cxdev->videoqueue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	cxdev->videoqueue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
+	cxdev->videoqueue.ops = &cxdev_video_qops;
+	cxdev->videoqueue.mem_ops = &vb2_vmalloc_memops;
+	cxdev->videoqueue.drv_priv = dvbdev;
+	cxdev->videoqueue.buf_struct_size =
+		sizeof(struct cxusb_medion_vbuffer);
+	cxdev->videoqueue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+
+	ret = vb2_queue_init(&cxdev->videoqueue);
+	if (ret) {
+		dev_err(&dvbdev->udev->dev,
+			"video queue init failed, ret = %d\n", ret);
+		return ret;
+	}
+
+	cxdev->videodev = video_device_alloc();
+	if (cxdev->videodev == NULL) {
+		dev_err(&dvbdev->udev->dev, "video device alloc failed\n");
+		ret = -ENOMEM;
+		goto ret_qrelease;
+	}
+
+	cxdev->videodev->fops = &cxusb_video_fops;
+	cxdev->videodev->v4l2_dev = &cxdev->v4l2dev;
+	cxdev->videodev->queue = &cxdev->videoqueue;
+	strcpy(cxdev->videodev->name, "cxusb");
+	cxdev->videodev->vfl_dir = VFL_DIR_RX;
+	cxdev->videodev->ioctl_ops = &cxusb_video_ioctl;
+	cxdev->videodev->tvnorms = V4L2_STD_ALL;
+	cxdev->videodev->release = cxusb_medion_videodev_release;
+	cxdev->videodev->lock = &cxdev->dev_lock;
+	video_set_drvdata(cxdev->videodev, dvbdev);
+
+	ret = video_register_device(cxdev->videodev, VFL_TYPE_GRABBER, -1);
+	if (ret) {
+		dev_err(&dvbdev->udev->dev,
+			"video device register failed, ret = %d\n", ret);
+		goto ret_vrelease;
+	}
+
+	return 0;
+
+ret_vrelease:
+	video_device_release(cxdev->videodev);
+
+ret_qrelease:
+	vb2_queue_release(&cxdev->videoqueue);
+
+	return ret;
+}
+
+static int cxusb_medion_register_analog_radio(struct dvb_usb_device *dvbdev)
+{
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	int ret;
+
+	cxdev->radiodev = video_device_alloc();
+	if (cxdev->radiodev == NULL) {
+		dev_err(&dvbdev->udev->dev, "radio device alloc failed\n");
+		return -ENOMEM;
+	}
+
+	cxdev->radiodev->fops = &cxusb_radio_fops;
+	cxdev->radiodev->v4l2_dev = &cxdev->v4l2dev;
+	strcpy(cxdev->radiodev->name, "cxusb");
+	cxdev->radiodev->vfl_dir = VFL_DIR_RX;
+	cxdev->radiodev->ioctl_ops = &cxusb_radio_ioctl;
+	cxdev->radiodev->release = video_device_release;
+	cxdev->radiodev->lock = &cxdev->dev_lock;
+	video_set_drvdata(cxdev->radiodev, dvbdev);
+
+	ret = video_register_device(cxdev->radiodev, VFL_TYPE_RADIO, -1);
+	if (ret) {
+		dev_err(&dvbdev->udev->dev,
+			"radio device register failed, ret = %d\n", ret);
+		video_device_release(cxdev->radiodev);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int cxusb_medion_register_analog_subdevs(struct dvb_usb_device *dvbdev)
+{
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	struct tuner_setup tun_setup;
+	struct i2c_board_info cx25840_board;
+	struct cx25840_platform_data cx25840_platform;
+
+	/* attach capture chip */
+	memset(&cx25840_platform, 0, sizeof(cx25840_platform));
+	cx25840_platform.generic_mode = 1;
+
+	memset(&cx25840_board, 0, sizeof(cx25840_board));
+	strcpy(cx25840_board.type, "cx25840");
+	cx25840_board.addr = 0x44;
+	cx25840_board.platform_data = &cx25840_platform;
+
+	cxdev->cx25840 = v4l2_i2c_new_subdev_board(&cxdev->v4l2dev,
+						   &dvbdev->i2c_adap,
+						   &cx25840_board, NULL);
+	if (cxdev->cx25840 == NULL) {
+		dev_err(&dvbdev->udev->dev, "cx25840 not found\n");
+		return -ENODEV;
+	}
+
+	/* attach analog tuner */
+	cxdev->tuner = v4l2_i2c_new_subdev(&cxdev->v4l2dev,
+					   &dvbdev->i2c_adap,
+					   "tuner", 0x61, NULL);
+	if (cxdev->tuner == NULL) {
+		dev_err(&dvbdev->udev->dev, "tuner not found\n");
+		return -ENODEV;
+	}
+
+	/* configure it */
+	memset(&tun_setup, 0, sizeof(tun_setup));
+	tun_setup.addr = 0x61;
+	tun_setup.type = TUNER_PHILIPS_FMD1216ME_MK3;
+	tun_setup.mode_mask = T_RADIO | T_ANALOG_TV;
+	v4l2_subdev_call(cxdev->tuner, tuner, s_type_addr, &tun_setup);
+
+	/* attach IF demod */
+	cxdev->tda9887 = v4l2_i2c_new_subdev(&cxdev->v4l2dev,
+					     &dvbdev->i2c_adap,
+					     "tuner", 0x43, NULL);
+	if (cxdev->tda9887 == NULL) {
+		dev_err(&dvbdev->udev->dev, "tda9887 not found\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+int cxusb_medion_register_analog(struct dvb_usb_device *dvbdev)
+{
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	int ret;
+
+	mutex_init(&cxdev->dev_lock);
+
+	init_completion(&cxdev->v4l2_release);
+
+	cxdev->v4l2dev.release = cxusb_medion_v4l2_release;
+
+	ret = v4l2_device_register(&dvbdev->udev->dev, &cxdev->v4l2dev);
+	if (ret != 0) {
+		dev_err(&dvbdev->udev->dev,
+			"V4L2 device registration failed, ret = %d\n", ret);
+		mutex_destroy(&cxdev->dev_lock);
+		return ret;
+	}
+
+	ret = cxusb_medion_register_analog_subdevs(dvbdev);
+	if (ret)
+		goto ret_unregister;
+
+	INIT_WORK(&cxdev->urbwork, cxusb_medion_v_complete_work);
+	INIT_LIST_HEAD(&cxdev->buflist);
+
+	cxdev->width = 320;
+	cxdev->height = 240;
+
+	ret = cxusb_medion_register_analog_video(dvbdev);
+	if (ret)
+		goto ret_unregister;
+
+	ret = cxusb_medion_register_analog_radio(dvbdev);
+	if (ret)
+		goto ret_vunreg;
+
+	return 0;
+
+ret_vunreg:
+	video_unregister_device(cxdev->videodev);
+
+ret_unregister:
+	v4l2_device_put(&cxdev->v4l2dev);
+	wait_for_completion(&cxdev->v4l2_release);
+
+	return ret;
+}
+
+void cxusb_medion_unregister_analog(struct dvb_usb_device *dvbdev)
+{
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	cxusb_vprintk(dvbdev, OPS, "unregistering analog\n");
+
+	video_unregister_device(cxdev->radiodev);
+	video_unregister_device(cxdev->videodev);
+
+	v4l2_device_put(&cxdev->v4l2dev);
+	wait_for_completion(&cxdev->v4l2_release);
+
+	cxusb_vprintk(dvbdev, OPS, "analog unregistered\n");
+}
diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c
index 99a3f3625944..db03b64308ab 100644
--- a/drivers/media/usb/dvb-usb/cxusb.c
+++ b/drivers/media/usb/dvb-usb/cxusb.c
@@ -11,11 +11,11 @@
  * design, so it can be reused for the "analogue-only" device (if it will
  * appear at all).
  *
- * TODO: Use the cx25840-driver for the analogue part
  *
  * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@posteo.de)
  * Copyright (C) 2006 Michael Krufky (mkrufky@linuxtv.org)
  * Copyright (C) 2006, 2007 Chris Pascoe (c.pascoe@itee.uq.edu.au)
+ * Copyright (C) 2011, 2017 Maciej S. Szmigiero (mail@maciej.szmigiero.name)
  *
  *   This program is free software; you can redistribute it and/or modify it
  *   under the terms of the GNU General Public License as published by the Free
@@ -24,8 +24,11 @@
  * see Documentation/dvb/README.dvb-usb for more information
  */
 #include <media/tuner.h>
-#include <linux/vmalloc.h>
+#include <linux/delay.h>
+#include <linux/device.h>
 #include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/vmalloc.h>
 
 #include "cxusb.h"
 
@@ -46,17 +49,46 @@
 #include "si2157.h"
 
 /* debug */
-static int dvb_usb_cxusb_debug;
+int dvb_usb_cxusb_debug;
 module_param_named(debug, dvb_usb_cxusb_debug, int, 0644);
-MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
+MODULE_PARM_DESC(debug, "set debugging level (see cxusb.h)."
+		 DVB_USB_DEBUG_STATUS);
 
 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 
-#define deb_info(args...)   dprintk(dvb_usb_cxusb_debug, 0x03, args)
-#define deb_i2c(args...)    dprintk(dvb_usb_cxusb_debug, 0x02, args)
+#define deb_info(args...)   dprintk(dvb_usb_cxusb_debug, CXUSB_DBG_MISC, args)
+#define deb_i2c(args...)    dprintk(dvb_usb_cxusb_debug, CXUSB_DBG_I2C, args)
+
+enum cxusb_table_index {
+	MEDION_MD95700,
+	DVICO_BLUEBIRD_LG064F_COLD,
+	DVICO_BLUEBIRD_LG064F_WARM,
+	DVICO_BLUEBIRD_DUAL_1_COLD,
+	DVICO_BLUEBIRD_DUAL_1_WARM,
+	DVICO_BLUEBIRD_LGZ201_COLD,
+	DVICO_BLUEBIRD_LGZ201_WARM,
+	DVICO_BLUEBIRD_TH7579_COLD,
+	DVICO_BLUEBIRD_TH7579_WARM,
+	DIGITALNOW_BLUEBIRD_DUAL_1_COLD,
+	DIGITALNOW_BLUEBIRD_DUAL_1_WARM,
+	DVICO_BLUEBIRD_DUAL_2_COLD,
+	DVICO_BLUEBIRD_DUAL_2_WARM,
+	DVICO_BLUEBIRD_DUAL_4,
+	DVICO_BLUEBIRD_DVB_T_NANO_2,
+	DVICO_BLUEBIRD_DVB_T_NANO_2_NFW_WARM,
+	AVERMEDIA_VOLAR_A868R,
+	DVICO_BLUEBIRD_DUAL_4_REV_2,
+	CONEXANT_D680_DMB,
+	MYGICA_D689,
+	MYGICA_T230,
+	MYGICA_T230C,
+	NR__cxusb_table_index
+};
+
+static struct usb_device_id cxusb_table[];
 
-static int cxusb_ctrl_msg(struct dvb_usb_device *d,
-			  u8 cmd, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
+int cxusb_ctrl_msg(struct dvb_usb_device *d,
+		   u8 cmd, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
 {
 	struct cxusb_state *st = d->priv;
 	int ret;
@@ -88,7 +120,8 @@ static void cxusb_gpio_tuner(struct dvb_usb_device *d, int onoff)
 	struct cxusb_state *st = d->priv;
 	u8 o[2], i;
 
-	if (st->gpio_write_state[GPIO_TUNER] == onoff)
+	if (st->gpio_write_state[GPIO_TUNER] == onoff &&
+	    !st->gpio_write_refresh[GPIO_TUNER])
 		return;
 
 	o[0] = GPIO_TUNER;
@@ -99,6 +132,7 @@ static void cxusb_gpio_tuner(struct dvb_usb_device *d, int onoff)
 		deb_info("gpio_write failed.\n");
 
 	st->gpio_write_state[GPIO_TUNER] = onoff;
+	st->gpio_write_refresh[GPIO_TUNER] = false;
 }
 
 static int cxusb_bluebird_gpio_rw(struct dvb_usb_device *d, u8 changemask,
@@ -258,7 +292,7 @@ static int cxusb_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
 
 static u32 cxusb_i2c_func(struct i2c_adapter *adapter)
 {
-	return I2C_FUNC_I2C;
+	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
 }
 
 static struct i2c_algorithm cxusb_i2c_algo = {
@@ -266,15 +300,48 @@ static struct i2c_algorithm cxusb_i2c_algo = {
 	.functionality = cxusb_i2c_func,
 };
 
-static int cxusb_power_ctrl(struct dvb_usb_device *d, int onoff)
+static int _cxusb_power_ctrl(struct dvb_usb_device *d, int onoff)
 {
 	u8 b = 0;
+
+	deb_info("setting power %s\n", onoff ? "ON" : "OFF");
+
 	if (onoff)
 		return cxusb_ctrl_msg(d, CMD_POWER_ON, &b, 1, NULL, 0);
 	else
 		return cxusb_ctrl_msg(d, CMD_POWER_OFF, &b, 1, NULL, 0);
 }
 
+static int cxusb_power_ctrl(struct dvb_usb_device *d, int onoff)
+{
+	bool is_medion = d->props.devices[0].warm_ids[0] ==
+		&cxusb_table[MEDION_MD95700];
+	int ret;
+
+	if (is_medion && !onoff) {
+		struct cxusb_medion_dev *cxdev = d->priv;
+
+		mutex_lock(&cxdev->open_lock);
+
+		if (cxdev->open_type == CXUSB_OPEN_ANALOG) {
+			deb_info("preventing DVB core from setting power OFF while we are in analog mode\n");
+			ret = -EBUSY;
+			goto ret_unlock;
+		}
+	}
+
+	ret = _cxusb_power_ctrl(d, onoff);
+
+ret_unlock:
+	if (is_medion && !onoff) {
+		struct cxusb_medion_dev *cxdev = d->priv;
+
+		mutex_unlock(&cxdev->open_lock);
+	}
+
+	return ret;
+}
+
 static int cxusb_aver_power_ctrl(struct dvb_usb_device *d, int onoff)
 {
 	int ret;
@@ -351,11 +418,26 @@ static int cxusb_d680_dmb_power_ctrl(struct dvb_usb_device *d, int onoff)
 
 static int cxusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 {
+	struct dvb_usb_device *dvbdev = adap->dev;
+	bool is_medion = dvbdev->props.devices[0].warm_ids[0] ==
+		&cxusb_table[MEDION_MD95700];
 	u8 buf[2] = { 0x03, 0x00 };
+
+	if (is_medion && onoff) {
+		int ret;
+
+		ret = cxusb_medion_get(dvbdev, CXUSB_OPEN_DIGITAL);
+		if (ret != 0)
+			return ret;
+	}
+
 	if (onoff)
-		cxusb_ctrl_msg(adap->dev, CMD_STREAMING_ON, buf, 2, NULL, 0);
+		cxusb_ctrl_msg(dvbdev, CMD_STREAMING_ON, buf, 2, NULL, 0);
 	else
-		cxusb_ctrl_msg(adap->dev, CMD_STREAMING_OFF, NULL, 0, NULL, 0);
+		cxusb_ctrl_msg(dvbdev, CMD_STREAMING_OFF, NULL, 0, NULL, 0);
+
+	if (is_medion && !onoff)
+		cxusb_medion_put(dvbdev);
 
 	return 0;
 }
@@ -630,9 +712,21 @@ static struct max2165_config mygica_d689_max2165_cfg = {
 /* Callbacks for DVB USB */
 static int cxusb_fmd1216me_tuner_attach(struct dvb_usb_adapter *adap)
 {
+	struct dvb_usb_device *dvbdev = adap->dev;
+	bool is_medion = dvbdev->props.devices[0].warm_ids[0] ==
+		&cxusb_table[MEDION_MD95700];
+
 	dvb_attach(simple_tuner_attach, adap->fe_adap[0].fe,
-		   &adap->dev->i2c_adap, 0x61,
+		   &dvbdev->i2c_adap, 0x61,
 		   TUNER_PHILIPS_FMD1216ME_MK3);
+
+	if (is_medion && adap->fe_adap[0].fe != NULL)
+		/*
+		 * make sure that DVB core won't put to sleep (reset, really)
+		 * tuner when we might be open in analog mode
+		 */
+		adap->fe_adap[0].fe->ops.tuner_ops.sleep = NULL;
+
 	return 0;
 }
 
@@ -734,20 +828,105 @@ static int cxusb_mygica_d689_tuner_attach(struct dvb_usb_adapter *adap)
 	return (fe == NULL) ? -EIO : 0;
 }
 
-static int cxusb_cx22702_frontend_attach(struct dvb_usb_adapter *adap)
+static int cxusb_medion_fe_ts_bus_ctrl(struct dvb_frontend *fe, int acquire)
 {
+	struct dvb_usb_adapter *adap = fe->dvb->priv;
+	struct dvb_usb_device *dvbdev = adap->dev;
+
+	if (acquire)
+		return cxusb_medion_get(dvbdev, CXUSB_OPEN_DIGITAL);
+
+	cxusb_medion_put(dvbdev);
+
+	return 0;
+}
+
+static int cxusb_medion_set_mode(struct dvb_usb_device *dvbdev, bool digital)
+{
+	struct cxusb_state *st = dvbdev->priv;
+	int ret;
 	u8 b;
-	if (usb_set_interface(adap->dev->udev, 0, 6) < 0)
-		err("set interface failed");
+	unsigned int i;
+
+	/*
+	 * switching mode while doing an I2C transaction often causes
+	 * the device to crash
+	 */
+	mutex_lock(&dvbdev->i2c_mutex);
+
+	if (digital) {
+		ret = usb_set_interface(dvbdev->udev, 0, 6);
+		if (ret != 0) {
+			dev_err(&dvbdev->udev->dev,
+				"digital interface selection failed (%d)\n",
+				ret);
+			goto ret_unlock;
+		}
+	} else {
+		ret = usb_set_interface(dvbdev->udev, 0, 1);
+		if (ret != 0) {
+			dev_err(&dvbdev->udev->dev,
+				"analog interface selection failed (%d)\n",
+				ret);
+			goto ret_unlock;
+		}
+	}
 
-	cxusb_ctrl_msg(adap->dev, CMD_DIGITAL, NULL, 0, &b, 1);
+	/* pipes need to be cleared after setting interface */
+	ret = usb_clear_halt(dvbdev->udev, usb_rcvbulkpipe(dvbdev->udev, 1));
+	if (ret != 0)
+		dev_warn(&dvbdev->udev->dev,
+			 "clear halt on IN pipe failed (%d)\n",
+			 ret);
+
+	ret = usb_clear_halt(dvbdev->udev, usb_sndbulkpipe(dvbdev->udev, 1));
+	if (ret != 0)
+		dev_warn(&dvbdev->udev->dev,
+			 "clear halt on OUT pipe failed (%d)\n",
+			 ret);
+
+	ret = cxusb_ctrl_msg(dvbdev, digital ? CMD_DIGITAL : CMD_ANALOG,
+			     NULL, 0, &b, 1);
+	if (ret != 0) {
+		dev_err(&dvbdev->udev->dev, "mode switch failed (%d)\n",
+			ret);
+		goto ret_unlock;
+	}
+
+	/* mode switch seems to reset GPIO states */
+	for (i = 0; i < ARRAY_SIZE(st->gpio_write_refresh); i++)
+		st->gpio_write_refresh[i] = true;
+
+ret_unlock:
+	mutex_unlock(&dvbdev->i2c_mutex);
+
+	return ret;
+}
+
+static int cxusb_cx22702_frontend_attach(struct dvb_usb_adapter *adap)
+{
+	struct dvb_usb_device *dvbdev = adap->dev;
+	bool is_medion = dvbdev->props.devices[0].warm_ids[0] ==
+		&cxusb_table[MEDION_MD95700];
+
+	if (is_medion) {
+		int ret;
+
+		ret = cxusb_medion_set_mode(dvbdev, true);
+		if (ret)
+			return ret;
+	}
 
 	adap->fe_adap[0].fe = dvb_attach(cx22702_attach, &cxusb_cx22702_config,
-					 &adap->dev->i2c_adap);
-	if ((adap->fe_adap[0].fe) != NULL)
-		return 0;
+					 &dvbdev->i2c_adap);
+	if (adap->fe_adap[0].fe == NULL)
+		return -EIO;
 
-	return -EIO;
+	if (is_medion)
+		adap->fe_adap[0].fe->ops.ts_bus_ctrl =
+			cxusb_medion_fe_ts_bus_ctrl;
+
+	return 0;
 }
 
 static int cxusb_lgdt3303_frontend_attach(struct dvb_usb_adapter *adap)
@@ -1383,6 +1562,101 @@ static int bluebird_patch_dvico_firmware_download(struct usb_device *udev,
 	return -EINVAL;
 }
 
+int cxusb_medion_get(struct dvb_usb_device *dvbdev,
+		     enum cxusb_open_type open_type)
+{
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+	int ret = 0;
+
+	mutex_lock(&cxdev->open_lock);
+
+	if (WARN_ON((cxdev->open_type == CXUSB_OPEN_INIT ||
+		     cxdev->open_type == CXUSB_OPEN_NONE) &&
+		    cxdev->open_ctr != 0)) {
+		ret = -EINVAL;
+		goto ret_unlock;
+	}
+
+	if (cxdev->open_type == CXUSB_OPEN_INIT) {
+		ret = -EAGAIN;
+		goto ret_unlock;
+	}
+
+	if (cxdev->open_ctr == 0) {
+		if (cxdev->open_type != open_type) {
+			deb_info("will acquire and switch to %s\n",
+				 open_type == CXUSB_OPEN_ANALOG ?
+				 "analog" : "digital");
+
+			if (open_type == CXUSB_OPEN_ANALOG) {
+				ret = _cxusb_power_ctrl(dvbdev, 1);
+				if (ret != 0)
+					dev_warn(&dvbdev->udev->dev,
+						 "powerup for analog switch failed (%d)\n",
+						 ret);
+
+				ret = cxusb_medion_set_mode(dvbdev, false);
+				if (ret != 0)
+					goto ret_unlock;
+
+				ret = cxusb_medion_analog_init(dvbdev);
+				if (ret != 0)
+					goto ret_unlock;
+			} else { /* digital */
+				ret = _cxusb_power_ctrl(dvbdev, 1);
+				if (ret != 0)
+					dev_warn(&dvbdev->udev->dev,
+						 "powerup for digital switch failed (%d)\n",
+						 ret);
+
+				ret = cxusb_medion_set_mode(dvbdev, true);
+				if (ret != 0)
+					goto ret_unlock;
+			}
+
+			cxdev->open_type = open_type;
+		} else
+			deb_info("reacquired idle %s\n",
+				 open_type == CXUSB_OPEN_ANALOG ?
+				 "analog" : "digital");
+
+		cxdev->open_ctr = 1;
+	} else if (cxdev->open_type == open_type) {
+		cxdev->open_ctr++;
+		deb_info("acquired %s\n", open_type == CXUSB_OPEN_ANALOG ?
+			 "analog" : "digital");
+	} else
+		ret = -EBUSY;
+
+ret_unlock:
+	mutex_unlock(&cxdev->open_lock);
+
+	return ret;
+}
+
+void cxusb_medion_put(struct dvb_usb_device *dvbdev)
+{
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	mutex_lock(&cxdev->open_lock);
+
+	if (cxdev->open_type == CXUSB_OPEN_INIT) {
+		WARN_ON(cxdev->open_ctr != 0);
+		cxdev->open_type = CXUSB_OPEN_NONE;
+		goto unlock;
+	}
+
+	if (!WARN_ON(cxdev->open_ctr < 1)) {
+		cxdev->open_ctr--;
+
+		deb_info("release %s\n", cxdev->open_type ==
+			 CXUSB_OPEN_ANALOG ? "analog" : "digital");
+	}
+
+unlock:
+	mutex_unlock(&cxdev->open_lock);
+}
+
 /* DVB USB Driver stuff */
 static struct dvb_usb_device_properties cxusb_medion_properties;
 static struct dvb_usb_device_properties cxusb_bluebird_lgh064f_properties;
@@ -1399,12 +1673,101 @@ static struct dvb_usb_device_properties cxusb_mygica_d689_properties;
 static struct dvb_usb_device_properties cxusb_mygica_t230_properties;
 static struct dvb_usb_device_properties cxusb_mygica_t230c_properties;
 
+static int cxusb_medion_priv_init(struct dvb_usb_device *dvbdev)
+{
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	cxdev->dvbdev = dvbdev;
+	cxdev->open_type = CXUSB_OPEN_INIT;
+	mutex_init(&cxdev->open_lock);
+
+	return 0;
+}
+
+static void cxusb_medion_priv_destroy(struct dvb_usb_device *dvbdev)
+{
+	struct cxusb_medion_dev *cxdev = dvbdev->priv;
+
+	mutex_destroy(&cxdev->open_lock);
+}
+
+static bool cxusb_medion_check_altsetting(struct usb_host_interface *as)
+{
+	unsigned int ctr;
+
+	for (ctr = 0; ctr < as->desc.bNumEndpoints; ctr++) {
+		if ((as->endpoint[ctr].desc.bEndpointAddress &
+		     USB_ENDPOINT_NUMBER_MASK) != 2)
+			continue;
+
+		if (as->endpoint[ctr].desc.bEndpointAddress & USB_DIR_IN &&
+		    ((as->endpoint[ctr].desc.bmAttributes &
+		      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC))
+			return true;
+
+		break;
+	}
+
+	return false;
+}
+
+static bool cxusb_medion_check_intf(struct usb_interface *intf)
+{
+	unsigned int ctr;
+
+	if (intf->num_altsetting < 2) {
+		dev_err(intf->usb_dev, "no alternate interface");
+
+		return false;
+	}
+
+	for (ctr = 0; ctr < intf->num_altsetting; ctr++) {
+		if (intf->altsetting[ctr].desc.bAlternateSetting != 1)
+			continue;
+
+		if (cxusb_medion_check_altsetting(&intf->altsetting[ctr]))
+			return true;
+
+		break;
+	}
+
+	dev_err(intf->usb_dev, "no iso interface");
+
+	return false;
+}
+
 static int cxusb_probe(struct usb_interface *intf,
 		       const struct usb_device_id *id)
 {
+	struct dvb_usb_device *dvbdev;
+	int ret;
+
+	/* Medion 95700 */
 	if (0 == dvb_usb_device_init(intf, &cxusb_medion_properties,
-				     THIS_MODULE, NULL, adapter_nr) ||
-	    0 == dvb_usb_device_init(intf, &cxusb_bluebird_lgh064f_properties,
+				     THIS_MODULE, &dvbdev, adapter_nr)) {
+		if (!cxusb_medion_check_intf(intf)) {
+			ret = -ENODEV;
+			goto ret_uninit;
+		}
+
+		_cxusb_power_ctrl(dvbdev, 1);
+		ret = cxusb_medion_set_mode(dvbdev, false);
+		if (ret)
+			goto ret_uninit;
+
+		ret = cxusb_medion_register_analog(dvbdev);
+
+		cxusb_medion_set_mode(dvbdev, true);
+		_cxusb_power_ctrl(dvbdev, 0);
+
+		if (ret != 0)
+			goto ret_uninit;
+
+		/* release device from INIT mode to normal operation */
+		cxusb_medion_put(dvbdev);
+
+		return 0;
+	} else if (0 == dvb_usb_device_init(intf, &cxusb_bluebird_lgh064f_properties,
 				     THIS_MODULE, NULL, adapter_nr) ||
 	    0 == dvb_usb_device_init(intf, &cxusb_bluebird_dee1601_properties,
 				     THIS_MODULE, NULL, adapter_nr) ||
@@ -1436,6 +1799,11 @@ static int cxusb_probe(struct usb_interface *intf,
 		return 0;
 
 	return -EINVAL;
+
+ret_uninit:
+	dvb_usb_device_exit(intf);
+
+	return ret;
 }
 
 static void cxusb_disconnect(struct usb_interface *intf)
@@ -1444,6 +1812,9 @@ static void cxusb_disconnect(struct usb_interface *intf)
 	struct cxusb_state *st = d->priv;
 	struct i2c_client *client;
 
+	if (d->props.devices[0].warm_ids[0] == &cxusb_table[MEDION_MD95700])
+		cxusb_medion_unregister_analog(d);
+
 	/* remove I2C client for tuner */
 	client = st->i2c_client_tuner;
 	if (client) {
@@ -1461,32 +1832,6 @@ static void cxusb_disconnect(struct usb_interface *intf)
 	dvb_usb_device_exit(intf);
 }
 
-enum cxusb_table_index {
-	MEDION_MD95700,
-	DVICO_BLUEBIRD_LG064F_COLD,
-	DVICO_BLUEBIRD_LG064F_WARM,
-	DVICO_BLUEBIRD_DUAL_1_COLD,
-	DVICO_BLUEBIRD_DUAL_1_WARM,
-	DVICO_BLUEBIRD_LGZ201_COLD,
-	DVICO_BLUEBIRD_LGZ201_WARM,
-	DVICO_BLUEBIRD_TH7579_COLD,
-	DVICO_BLUEBIRD_TH7579_WARM,
-	DIGITALNOW_BLUEBIRD_DUAL_1_COLD,
-	DIGITALNOW_BLUEBIRD_DUAL_1_WARM,
-	DVICO_BLUEBIRD_DUAL_2_COLD,
-	DVICO_BLUEBIRD_DUAL_2_WARM,
-	DVICO_BLUEBIRD_DUAL_4,
-	DVICO_BLUEBIRD_DVB_T_NANO_2,
-	DVICO_BLUEBIRD_DVB_T_NANO_2_NFW_WARM,
-	AVERMEDIA_VOLAR_A868R,
-	DVICO_BLUEBIRD_DUAL_4_REV_2,
-	CONEXANT_D680_DMB,
-	MYGICA_D689,
-	MYGICA_T230,
-	MYGICA_T230C,
-	NR__cxusb_table_index
-};
-
 static struct usb_device_id cxusb_table[NR__cxusb_table_index + 1] = {
 	[MEDION_MD95700] = {
 		USB_DEVICE(USB_VID_MEDION, USB_PID_MEDION_MD95700)
@@ -1563,13 +1908,16 @@ static struct dvb_usb_device_properties cxusb_medion_properties = {
 
 	.usb_ctrl = CYPRESS_FX2,
 
-	.size_of_priv     = sizeof(struct cxusb_state),
+	.size_of_priv     = sizeof(struct cxusb_medion_dev),
+	.priv_init        = cxusb_medion_priv_init,
+	.priv_destroy     = cxusb_medion_priv_destroy,
 
 	.num_adapters = 1,
 	.adapter = {
 		{
 		.num_frontends = 1,
 		.fe = {{
+			.caps = DVB_USB_ADAP_STREAMING_CTRL_NO_URB,
 			.streaming_ctrl   = cxusb_streaming_ctrl,
 			.frontend_attach  = cxusb_cx22702_frontend_attach,
 			.tuner_attach     = cxusb_fmd1216me_tuner_attach,
@@ -2330,6 +2678,7 @@ module_usb_driver(cxusb_driver);
 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
+MODULE_AUTHOR("Maciej S. Szmigiero <mail@maciej.szmigiero.name>");
 MODULE_DESCRIPTION("Driver for Conexant USB2.0 hybrid reference design");
-MODULE_VERSION("1.0-alpha");
+MODULE_VERSION("1.0-beta");
 MODULE_LICENSE("GPL");
diff --git a/drivers/media/usb/dvb-usb/cxusb.h b/drivers/media/usb/dvb-usb/cxusb.h
index 66429d7f69b5..1cead0fb533e 100644
--- a/drivers/media/usb/dvb-usb/cxusb.h
+++ b/drivers/media/usb/dvb-usb/cxusb.h
@@ -1,9 +1,28 @@
 #ifndef _DVB_USB_CXUSB_H_
 #define _DVB_USB_CXUSB_H_
 
+#include <linux/completion.h>
+#include <linux/i2c.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/usb.h>
+#include <linux/workqueue.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-device.h>
+#include <media/videobuf2-core.h>
+
 #define DVB_USB_LOG_PREFIX "cxusb"
 #include "dvb-usb.h"
 
+#define CXUSB_VIDEO_URBS (5)
+
+#define CXUSB_VIDEO_PKT_SIZE 3030
+#define CXUSB_VIDEO_MAX_FRAME_PKTS 346
+#define CXUSB_VIDEO_MAX_FRAME_SIZE (CXUSB_VIDEO_MAX_FRAME_PKTS * \
+					CXUSB_VIDEO_PKT_SIZE)
+
 /* usb commands - some of it are guesses, don't have a reference yet */
 #define CMD_BLUEBIRD_GPIO_RW 0x05
 
@@ -28,11 +47,26 @@
 #define CMD_ANALOG        0x50
 #define CMD_DIGITAL       0x51
 
+#define CXUSB_BT656_COMMON "\xff\x00\x00"
+
+#define CXUSB_FIELD_MASK (0x40)
+#define CXUSB_FIELD_1 (0)
+#define CXUSB_FIELD_2 (0x40)
+
+#define CXUSB_SEAV_MASK (0x10)
+#define CXUSB_SEAV_EAV (0x10)
+#define CXUSB_SEAV_SAV (0)
+
+#define CXUSB_VBI_MASK (0x20)
+#define CXUSB_VBI_ON (0x20)
+#define CXUSB_VBI_OFF (0)
+
 /* Max transfer size done by I2C transfer functions */
 #define MAX_XFER_SIZE  80
 
 struct cxusb_state {
 	u8 gpio_write_state[3];
+	bool gpio_write_refresh[3];
 	struct i2c_client *i2c_client_demod;
 	struct i2c_client *i2c_client_tuner;
 
@@ -44,4 +78,107 @@ struct cxusb_state {
 		enum fe_status *status);
 };
 
+enum cxusb_open_type {
+	CXUSB_OPEN_INIT, CXUSB_OPEN_NONE,
+	CXUSB_OPEN_ANALOG, CXUSB_OPEN_DIGITAL
+};
+
+struct cxusb_medion_auxbuf {
+	u8 *buf;
+	unsigned int len;
+	unsigned int paylen;
+};
+
+enum cxusb_bt656_mode {
+	NEW_FRAME, FIRST_FIELD, SECOND_FIELD
+};
+
+enum cxusb_bt656_fmode {
+	START_SEARCH, LINE_SAMPLES, VBI_SAMPLES
+};
+
+struct cxusb_bt656_params {
+	enum cxusb_bt656_mode mode;
+	enum cxusb_bt656_fmode fmode;
+	unsigned int pos;
+	unsigned int line;
+	unsigned int linesamples;
+	u8 *buf;
+};
+
+struct cxusb_medion_dev {
+	/* has to be the first one */
+	struct cxusb_state state;
+
+	struct dvb_usb_device *dvbdev;
+
+	struct v4l2_device v4l2dev;
+	struct v4l2_subdev *cx25840;
+	struct v4l2_subdev *tuner;
+	struct v4l2_subdev *tda9887;
+	struct video_device *videodev, *radiodev;
+	struct mutex dev_lock;
+
+	enum cxusb_open_type open_type;
+	unsigned int open_ctr;
+	struct mutex open_lock;
+
+	struct vb2_queue videoqueue;
+	u32 input;
+	bool streaming;
+	u32 width, height;
+	bool raw_mode;
+	struct cxusb_medion_auxbuf auxbuf;
+	v4l2_std_id norm;
+
+	struct urb *streamurbs[CXUSB_VIDEO_URBS];
+	unsigned long urbcomplete;
+	struct work_struct urbwork;
+	unsigned int nexturb;
+
+	struct cxusb_bt656_params bt656;
+	struct cxusb_medion_vbuffer *vbuf;
+
+	struct list_head buflist;
+
+	struct completion v4l2_release;
+};
+
+struct cxusb_medion_vbuffer {
+	struct vb2_buffer vb2;
+	struct list_head list;
+};
+
+/* Capture streaming parameters extendedmode field flags */
+#define CXUSB_EXTENDEDMODE_CAPTURE_RAW 1
+
+/* defines for "debug" module parameter */
+#define CXUSB_DBG_RC BIT(0)
+#define CXUSB_DBG_I2C BIT(1)
+#define CXUSB_DBG_MISC BIT(2)
+#define CXUSB_DBG_BT656 BIT(3)
+#define CXUSB_DBG_URB BIT(4)
+#define CXUSB_DBG_OPS BIT(5)
+#define CXUSB_DBG_AUXB BIT(6)
+
+extern int dvb_usb_cxusb_debug;
+
+#define cxusb_vprintk(dvbdev, lvl, ...) do {				\
+		struct cxusb_medion_dev *_cxdev = (dvbdev)->priv;	\
+		if (dvb_usb_cxusb_debug & CXUSB_DBG_##lvl)		\
+			v4l2_printk(KERN_DEBUG,			\
+				    &_cxdev->v4l2dev, __VA_ARGS__);	\
+	} while (0)
+
+int cxusb_ctrl_msg(struct dvb_usb_device *d,
+		   u8 cmd, u8 *wbuf, int wlen, u8 *rbuf, int rlen);
+
+int cxusb_medion_analog_init(struct dvb_usb_device *dvbdev);
+int cxusb_medion_register_analog(struct dvb_usb_device *dvbdev);
+void cxusb_medion_unregister_analog(struct dvb_usb_device *dvbdev);
+
+int cxusb_medion_get(struct dvb_usb_device *dvbdev,
+		     enum cxusb_open_type open_type);
+void cxusb_medion_put(struct dvb_usb_device *dvbdev);
+
 #endif
diff --git a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
index e5675da286cb..d7d388b7b311 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
+++ b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
@@ -14,6 +14,7 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
 {
 	struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
 	int newfeedcount, ret;
+	bool streaming_ctrl_no_urb;
 
 	if (adap == NULL)
 		return -ENODEV;
@@ -23,12 +24,16 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
 		return -EINVAL;
 	}
 
+	streaming_ctrl_no_urb = adap->props.fe[adap->active_fe].caps &
+		DVB_USB_ADAP_STREAMING_CTRL_NO_URB;
 	newfeedcount = adap->feedcount + (onoff ? 1 : -1);
 
 	/* stop feed before setting a new pid if there will be no pid anymore */
 	if (newfeedcount == 0) {
 		deb_ts("stop feeding\n");
-		usb_urb_kill(&adap->fe_adap[adap->active_fe].stream);
+
+		if (streaming_ctrl_no_urb)
+			usb_urb_kill(&adap->fe_adap[adap->active_fe].stream);
 
 		if (adap->props.fe[adap->active_fe].streaming_ctrl != NULL) {
 			ret = adap->props.fe[adap->active_fe].streaming_ctrl(adap, 0);
@@ -37,6 +42,9 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
 				return ret;
 			}
 		}
+
+		if (!streaming_ctrl_no_urb)
+			usb_urb_kill(&adap->fe_adap[adap->active_fe].stream);
 	}
 
 	adap->feedcount = newfeedcount;
@@ -55,8 +63,10 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
 	 * for reception.
 	 */
 	if (adap->feedcount == onoff && adap->feedcount > 0) {
-		deb_ts("submitting all URBs\n");
-		usb_urb_submit(&adap->fe_adap[adap->active_fe].stream);
+		if (!streaming_ctrl_no_urb) {
+			deb_ts("submitting all URBs early\n");
+			usb_urb_submit(&adap->fe_adap[adap->active_fe].stream);
+		}
 
 		deb_ts("controlling pid parser\n");
 		if (adap->props.fe[adap->active_fe].caps & DVB_USB_ADAP_HAS_PID_FILTER &&
@@ -79,6 +89,10 @@ static int dvb_usb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
 			}
 		}
 
+		if (streaming_ctrl_no_urb) {
+			deb_ts("submitting all URBs late\n");
+			usb_urb_submit(&adap->fe_adap[adap->active_fe].stream);
+		}
 	}
 	return 0;
 }
diff --git a/drivers/media/usb/dvb-usb/dvb-usb-init.c b/drivers/media/usb/dvb-usb/dvb-usb-init.c
index 84308569e7dc..9746266c9e35 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb-init.c
+++ b/drivers/media/usb/dvb-usb/dvb-usb-init.c
@@ -133,6 +133,10 @@ static int dvb_usb_exit(struct dvb_usb_device *d)
 	dvb_usb_i2c_exit(d);
 	deb_info("state should be zero now: %x\n", d->state);
 	d->state = DVB_USB_STATE_INIT;
+
+	if (d->priv != NULL && d->props.priv_destroy != NULL)
+		d->props.priv_destroy(d);
+
 	kfree(d->priv);
 	kfree(d);
 	return 0;
@@ -154,6 +158,15 @@ static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums)
 			err("no memory for priv in 'struct dvb_usb_device'");
 			return -ENOMEM;
 		}
+
+		if (d->props.priv_init != NULL) {
+			ret = d->props.priv_init(d);
+			if (ret != 0) {
+				kfree(d->priv);
+				d->priv = NULL;
+				return ret;
+			}
+		}
 	}
 
 	/* check the capabilities and set appropriate variables */
diff --git a/drivers/media/usb/dvb-usb/dvb-usb.h b/drivers/media/usb/dvb-usb/dvb-usb.h
index 67f898b6f6d0..0254ecfbd4c6 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb.h
+++ b/drivers/media/usb/dvb-usb/dvb-usb.h
@@ -142,6 +142,7 @@ struct dvb_usb_adapter_fe_properties {
 #define DVB_USB_ADAP_NEED_PID_FILTERING           0x04
 #define DVB_USB_ADAP_RECEIVES_204_BYTE_TS         0x08
 #define DVB_USB_ADAP_RECEIVES_RAW_PAYLOAD         0x10
+#define DVB_USB_ADAP_STREAMING_CTRL_NO_URB        0x20
 	int caps;
 	int pid_filter_count;
 
@@ -232,6 +233,11 @@ enum dvb_usb_mode {
  *
  * @size_of_priv: how many bytes shall be allocated for the private field
  *  of struct dvb_usb_device.
+ * @priv_init: optional callback to initialize the variable that private field
+ * of struct dvb_usb_device has pointer to just after it had been allocated and
+ * zeroed.
+ * @priv_destroy: just like priv_init, only called before deallocating
+ * the memory pointed by private field of struct dvb_usb_device.
  *
  * @power_ctrl: called to enable/disable power of the device.
  * @read_mac_address: called to read the MAC address of the device.
@@ -273,6 +279,8 @@ struct dvb_usb_device_properties {
 	int        no_reconnect;
 
 	int size_of_priv;
+	int (*priv_init)(struct dvb_usb_device *);
+	void (*priv_destroy)(struct dvb_usb_device *);
 
 	int num_adapters;
 	struct dvb_usb_adapter_properties adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];