2017-12-22 23:19:50

by Maciej S. Szmigiero

Subject: [PATCH v5 6/6] [media] cxusb: add analog mode support for Medion MD95700

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 <[email protected]>
---
drivers/media/usb/dvb-usb/Kconfig | 16 +-
drivers/media/usb/dvb-usb/Makefile | 3 +
drivers/media/usb/dvb-usb/cxusb-analog.c | 1914 ++++++++++++++++++++++++++++++
drivers/media/usb/dvb-usb/cxusb.c | 2 -
drivers/media/usb/dvb-usb/cxusb.h | 106 ++
5 files changed, 2037 insertions(+), 4 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 2651ae277347..b4ef8f6eb470 100644
--- a/drivers/media/usb/dvb-usb/Kconfig
+++ b/drivers/media/usb/dvb-usb/Kconfig
@@ -138,12 +138,24 @@ 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, for a basic analog mode support
+ see the next option ("Analog support for the Conexant USB2.0 hybrid
+ reference design").
+ Devices that require this module:

Medion MD95700 hybrid USB2.0 device.
DViCO FusionHDTV (Bluebird) USB2.0 devices

+config DVB_USB_CXUSB_ANALOG
+ bool "Analog support for the Conexant USB2.0 hybrid reference design"
+ depends on DVB_USB_CXUSB && VIDEO_V4L2
+ select VIDEO_CX25840
+ select VIDEOBUF2_VMALLOC
+ help
+ Say Y here to enable basic analog mode support for the Conexant
+ USB2.0 hybrid reference design.
+ Currently this mode is supported only on a Medion MD95700 device.
+
config DVB_USB_M920X
tristate "Uli m920x DVB-T USB2.0 support"
depends on DVB_USB
diff --git a/drivers/media/usb/dvb-usb/Makefile b/drivers/media/usb/dvb-usb/Makefile
index 16de1e4f36a4..264468783db7 100644
--- a/drivers/media/usb/dvb-usb/Makefile
+++ b/drivers/media/usb/dvb-usb/Makefile
@@ -42,6 +42,9 @@ dvb-usb-digitv-objs := digitv.o
obj-$(CONFIG_DVB_USB_DIGITV) += dvb-usb-digitv.o

dvb-usb-cxusb-objs := cxusb.o
+ifeq ($(CONFIG_DVB_USB_CXUSB_ANALOG),y)
+dvb-usb-cxusb-objs += cxusb-analog.o
+endif
obj-$(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..969d82b24f41
--- /dev/null
+++ b/drivers/media/usb/dvb-usb/cxusb-analog.c
@@ -0,0 +1,1914 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// DVB USB compliant linux driver for Conexant USB reference design -
+// (analog part).
+//
+// Copyright (C) 2011, 2017 Maciej S. Szmigiero ([email protected])
+//
+// TODO:
+// * audio support,
+// * finish radio support (requires audio of course),
+// * VBI support,
+// * controls support
+
+#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 long len = 0;
+ int i;
+ bool ret;
+
+ for (i = 0; i < urb->number_of_packets; i++)
+ len += urb->iso_frame_desc[i].actual_length;
+
+ 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;
+
+ 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_cf_refc_fld_chg(struct dvb_usb_device *dvbdev,
+ struct cxusb_bt656_params *bt656,
+ bool firstfield,
+ unsigned int maxlines,
+ unsigned int maxlinesamples,
+ unsigned char buf[4])
+{
+ bool firstfield_code = (buf[3] & CXUSB_BT656_FIELD_MASK) ==
+ CXUSB_BT656_FIELD_1;
+ unsigned int remlines;
+
+ if (bt656->line == 0 || firstfield == firstfield_code)
+ return false;
+
+ if (bt656->fmode == LINE_SAMPLES) {
+ unsigned int remsamples = maxlinesamples -
+ bt656->linesamples;
+
+ cxusb_vprintk(dvbdev, BT656,
+ "field %c after line %u field change\n",
+ firstfield ? '1' : '2', bt656->line);
+
+ if (bt656->buf != NULL && remsamples > 0) {
+ memset(bt656->buf, 0, remsamples);
+ bt656->buf += remsamples;
+
+ cxusb_vprintk(dvbdev, BT656,
+ "field %c line %u %u samples still remaining (of %u)\n",
+ firstfield ? '1' : '2',
+ bt656->line, remsamples,
+ maxlinesamples);
+ }
+
+ bt656->line++;
+ }
+
+ remlines = maxlines - bt656->line;
+ if (bt656->buf != NULL && remlines > 0) {
+ memset(bt656->buf, 0, remlines * maxlinesamples);
+ bt656->buf += remlines * maxlinesamples;
+
+ cxusb_vprintk(dvbdev, BT656,
+ "field %c %u lines still remaining (of %u)\n",
+ firstfield ? '1' : '2', remlines,
+ maxlines);
+ }
+
+ return true;
+}
+
+static bool cxusb_medion_cf_refc_start_sch(struct dvb_usb_device *dvbdev,
+ struct cxusb_medion_auxbuf *auxbuf,
+ struct cxusb_bt656_params *bt656,
+ bool firstfield,
+ unsigned char buf[4])
+{
+ bool firstfield_code = (buf[3] & CXUSB_BT656_FIELD_MASK) ==
+ CXUSB_BT656_FIELD_1;
+ bool sav_code = (buf[3] & CXUSB_BT656_SEAV_MASK) ==
+ CXUSB_BT656_SEAV_SAV;
+ bool vbi_code = (buf[3] & CXUSB_BT656_VBI_MASK) ==
+ CXUSB_BT656_VBI_ON;
+
+ if (bt656->fmode != START_SEARCH)
+ return false;
+
+ if (sav_code && firstfield == firstfield_code) {
+ if (!vbi_code) {
+ 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);
+
+ return true;
+}
+
+static bool cxusb_medion_cf_refc_line_smpl(struct dvb_usb_device *dvbdev,
+ struct cxusb_bt656_params *bt656,
+ bool firstfield,
+ unsigned int maxlinesamples,
+ unsigned char buf[4])
+{
+ bool sav_code = (buf[3] & CXUSB_BT656_SEAV_MASK) ==
+ CXUSB_BT656_SEAV_SAV;
+ unsigned int remsamples;
+
+ if (bt656->fmode != LINE_SAMPLES)
+ return false;
+
+ if (sav_code)
+ cxusb_vprintk(dvbdev, BT656,
+ "SAV in line samples @ line %u, pos %x\n",
+ bt656->line, bt656->pos);
+
+ remsamples = maxlinesamples - bt656->linesamples;
+ if (bt656->buf != NULL && remsamples > 0) {
+ memset(bt656->buf, 0, remsamples);
+ bt656->buf += remsamples;
+
+ cxusb_vprintk(dvbdev, BT656,
+ "field %c line %u %u samples still remaining (of %u)\n",
+ firstfield ? '1' : '2', bt656->line, remsamples,
+ maxlinesamples);
+ }
+
+ bt656->fmode = START_SEARCH;
+ bt656->line++;
+
+ return true;
+}
+
+static bool cxusb_medion_cf_refc_vbi_smpl(struct dvb_usb_device *dvbdev,
+ struct cxusb_bt656_params *bt656,
+ unsigned char buf[4])
+{
+ bool sav_code = (buf[3] & CXUSB_BT656_SEAV_MASK) ==
+ CXUSB_BT656_SEAV_SAV;
+
+ if (bt656->fmode != VBI_SAMPLES)
+ return false;
+
+ if (sav_code)
+ cxusb_vprintk(dvbdev, BT656, "SAV in VBI samples @ pos %x\n",
+ bt656->pos);
+
+ bt656->fmode = START_SEARCH;
+
+ return true;
+}
+
+static void cxusb_medion_cf_ref_code(struct dvb_usb_device *dvbdev,
+ struct cxusb_medion_auxbuf *auxbuf,
+ struct cxusb_bt656_params *bt656,
+ bool firstfield,
+ unsigned int maxlines,
+ unsigned int maxlinesamples,
+ unsigned char buf[4])
+{
+ if (cxusb_medion_cf_refc_start_sch(dvbdev, auxbuf, bt656, firstfield,
+ buf))
+ return;
+
+ if (cxusb_medion_cf_refc_line_smpl(dvbdev, bt656, firstfield,
+ maxlinesamples, buf))
+ return;
+
+ if (cxusb_medion_cf_refc_vbi_smpl(dvbdev, bt656, buf))
+ return;
+
+ bt656->pos = cxusb_auxbuf_advance(auxbuf, bt656->pos, 4);
+}
+
+static bool cxusb_medion_cs_start_sch(struct dvb_usb_device *dvbdev,
+ struct cxusb_medion_auxbuf *auxbuf,
+ struct cxusb_bt656_params *bt656,
+ unsigned int maxlinesamples)
+{
+ unsigned char buf[64];
+ unsigned int idx;
+ unsigned int tocheck = clamp_t(size_t, maxlinesamples / 4, 3,
+ sizeof(buf));
+
+ if (bt656->fmode != START_SEARCH || bt656->line == 0)
+ return false;
+
+ if (!cxusb_auxbuf_copy(auxbuf, bt656->pos + 1, buf, tocheck)) {
+ bt656->pos = cxusb_auxbuf_advance(auxbuf, bt656->pos, 1);
+ return true;
+ }
+
+ for (idx = 0; idx <= tocheck - 3; idx++)
+ if (memcmp(buf + idx, CXUSB_BT656_PREAMBLE, 3) == 0)
+ break;
+
+ if (idx <= tocheck - 3) {
+ bt656->pos = cxusb_auxbuf_advance(auxbuf, bt656->pos, 1);
+ return true;
+ }
+
+ cxusb_vprintk(dvbdev, BT656, "line %u early start, pos %x\n",
+ bt656->line, bt656->pos);
+
+ bt656->linesamples = 0;
+ bt656->fmode = LINE_SAMPLES;
+
+ return true;
+}
+
+static bool cxusb_medion_cs_line_smpl(struct dvb_usb_device *dvbdev,
+ struct cxusb_medion_auxbuf *auxbuf,
+ struct cxusb_bt656_params *bt656,
+ unsigned int maxlinesamples,
+ unsigned char val)
+{
+ if (bt656->fmode != LINE_SAMPLES)
+ return false;
+
+ 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++;
+ }
+
+ return true;
+}
+
+static void cxusb_medion_copy_samples(struct dvb_usb_device *dvbdev,
+ struct cxusb_medion_auxbuf *auxbuf,
+ struct cxusb_bt656_params *bt656,
+ unsigned int maxlinesamples,
+ unsigned char val)
+{
+ if (cxusb_medion_cs_start_sch(dvbdev, auxbuf, bt656, maxlinesamples))
+ return;
+
+ if (cxusb_medion_cs_line_smpl(dvbdev, auxbuf, bt656, maxlinesamples,
+ val))
+ return;
+
+ /* TODO: copy VBI samples */
+ bt656->pos = cxusb_auxbuf_advance(auxbuf, bt656->pos, 1);
+}
+
+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 maxlinesmpls)
+{
+ 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 (val == CXUSB_BT656_PREAMBLE[0]) {
+ unsigned char buf[4];
+
+ buf[0] = val;
+ if (!cxusb_auxbuf_copy(auxbuf, bt656->pos + 1,
+ buf + 1, 3))
+ return false;
+
+ if (buf[1] == CXUSB_BT656_PREAMBLE[1] &&
+ buf[2] == CXUSB_BT656_PREAMBLE[2]) {
+ if (cxusb_medion_cf_refc_fld_chg(dvbdev,
+ bt656,
+ firstfield,
+ maxlines,
+ maxlinesmpls,
+ buf))
+ return true;
+
+ cxusb_medion_cf_ref_code(dvbdev, auxbuf,
+ bt656, firstfield,
+ maxlines,
+ maxlinesmpls, buf);
+
+ continue;
+ }
+ }
+
+ cxusb_medion_copy_samples(dvbdev, auxbuf, bt656, maxlinesmpls,
+ val);
+ }
+
+ if (bt656->line < maxlines) {
+ cxusb_vprintk(dvbdev, BT656,
+ "end of buffer pos = %u, line = %u\n",
+ bt656->pos, bt656->line);
+ return false;
+ }
+
+ return true;
+}
+
+static void cxusb_medion_v_process_urb_raw_mode(struct cxusb_medion_dev *cxdev,
+ struct urb *urb)
+{
+ struct dvb_usb_device *dvbdev = cxdev->dvbdev;
+ u8 *buf;
+ struct cxusb_medion_vbuffer *vbuf;
+ int i;
+ unsigned long len = 0;
+
+ if (list_empty(&cxdev->buflist)) {
+ dev_warn(&dvbdev->udev->dev, "no free buffers\n");
+ return;
+ }
+
+ 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;
+ len += urb->iso_frame_desc[i].actual_length;
+ }
+
+ vb2_set_plane_payload(&vbuf->vb2, 0, len);
+
+ vb2_buffer_done(&vbuf->vb2, VB2_BUF_STATE_DONE);
+}
+
+static void cxusb_medion_v_process_urb(struct cxusb_medion_dev *cxdev,
+ struct urb *urb)
+{
+ struct dvb_usb_device *dvbdev = cxdev->dvbdev;
+ 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);
+
+ /*
+ * 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))
+ return;
+
+ /*
+ * 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))
+ return;
+
+ 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");
+ }
+}
+
+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) {
+ if (cxdev->raw_mode)
+ cxusb_medion_v_process_urb_raw_mode(cxdev, urb);
+ else
+ cxusb_medion_v_process_urb(cxdev, urb);
+ }
+ }
+
+ 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) {
+ 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) {
+ ret = -ENOMEM;
+ goto ret_freeab;
+ } else
+ break;
+ }
+
+ surb = usb_alloc_urb(npackets, GFP_KERNEL);
+ if (surb == NULL) {
+ 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 ea55b31cf681..3980a33c5391 100644
--- a/drivers/media/usb/dvb-usb/cxusb.c
+++ b/drivers/media/usb/dvb-usb/cxusb.c
@@ -11,7 +11,6 @@
* 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 ([email protected])
* Copyright (C) 2006 Michael Krufky ([email protected])
@@ -2683,5 +2682,4 @@ MODULE_AUTHOR("Michael Krufky <[email protected]>");
MODULE_AUTHOR("Chris Pascoe <[email protected]>");
MODULE_AUTHOR("Maciej S. Szmigiero <[email protected]>");
MODULE_DESCRIPTION("Driver for Conexant USB2.0 hybrid reference design");
-MODULE_VERSION("1.0-alpha");
MODULE_LICENSE("GPL");
diff --git a/drivers/media/usb/dvb-usb/cxusb.h b/drivers/media/usb/dvb-usb/cxusb.h
index f586d61a7bf8..eb5ddda5962b 100644
--- a/drivers/media/usb/dvb-usb/cxusb.h
+++ b/drivers/media/usb/dvb-usb/cxusb.h
@@ -2,12 +2,27 @@
#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/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

@@ -32,6 +47,20 @@
#define CMD_ANALOG 0x50
#define CMD_DIGITAL 0x51

+#define CXUSB_BT656_PREAMBLE ((const u8 *)"\xff\x00\x00")
+
+#define CXUSB_BT656_FIELD_MASK BIT(6)
+#define CXUSB_BT656_FIELD_1 0
+#define CXUSB_BT656_FIELD_2 BIT(6)
+
+#define CXUSB_BT656_VBI_MASK BIT(5)
+#define CXUSB_BT656_VBI_ON BIT(5)
+#define CXUSB_BT656_VBI_OFF 0
+
+#define CXUSB_BT656_SEAV_MASK BIT(4)
+#define CXUSB_BT656_SEAV_EAV BIT(4)
+#define CXUSB_BT656_SEAV_SAV 0
+
/* Max transfer size done by I2C transfer functions */
#define MAX_XFER_SIZE 80

@@ -54,6 +83,29 @@ enum cxusb_open_type {
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;
@@ -63,18 +115,71 @@ struct cxusb_medion_dev {
enum cxusb_open_type open_type;
unsigned int open_ctr;
struct mutex open_lock;
+
+#ifdef CONFIG_DVB_USB_CXUSB_ANALOG
+ 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;
+
+ 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;
+#endif
};

+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, const u8 *wbuf, int wlen, u8 *rbuf, int rlen);

+#ifdef CONFIG_DVB_USB_CXUSB_ANALOG
+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);
+#else
static inline int cxusb_medion_analog_init(struct dvb_usb_device *dvbdev)
{
return -EINVAL;
@@ -88,6 +193,7 @@ static inline int cxusb_medion_register_analog(struct dvb_usb_device *dvbdev)
static inline void cxusb_medion_unregister_analog(struct dvb_usb_device *dvbdev)
{
}
+#endif

int cxusb_medion_get(struct dvb_usb_device *dvbdev,
enum cxusb_open_type open_type);

2017-12-23 15:58:36

by Philippe Ombredanne

Subject: Re: [PATCH v5 6/6] [media] cxusb: add analog mode support for Medion MD95700

On Sat, Dec 23, 2017 at 12:19 AM, Maciej S. Szmigiero
<[email protected]> wrote:
> 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 <[email protected]>
> ---
> drivers/media/usb/dvb-usb/Kconfig | 16 +-
> drivers/media/usb/dvb-usb/Makefile | 3 +
> drivers/media/usb/dvb-usb/cxusb-analog.c | 1914 ++++++++++++++++++++++++++++++
> drivers/media/usb/dvb-usb/cxusb.c | 2 -
> drivers/media/usb/dvb-usb/cxusb.h | 106 ++
> 5 files changed, 2037 insertions(+), 4 deletions(-)
> create mode 100644 drivers/media/usb/dvb-usb/cxusb-analog.c

<snip>

> index 000000000000..969d82b24f41
> --- /dev/null
> +++ b/drivers/media/usb/dvb-usb/cxusb-analog.c
> @@ -0,0 +1,1914 @@
> +// SPDX-License-Identifier: GPL-2.0+

Thanks! For the SPDX tags usage:

Acked-by: Philippe Ombredanne <[email protected]>