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CoolPi-Armbian-Rockchip-RK3.../drivers/media/usb/dvb-usb/cxusb-analog.c

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// SPDX-License-Identifier: GPL-2.0+
//
// DVB USB compliant linux driver for Conexant USB reference design -
// (analog part).
//
// Copyright (C) 2011, 2017, 2018
// Maciej S. Szmigiero (mail@maciej.szmigiero.name)
//
// In case there are new analog / DVB-T hybrid devices released in the market
// using the same general design as Medion MD95700: a CX25840 video decoder
// outputting a BT.656 stream to a USB bridge chip which then forwards it to
// the host in isochronous USB packets this code should be made generic, with
// board specific bits implemented via separate card structures.
//
// This is, however, unlikely as the Medion model was released
// years ago (in 2005).
//
// 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/ktime.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-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->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;
}
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 (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 dvb_usb_device *dvbdev,
struct cxusb_medion_auxbuf *auxbuf,
u8 *buf, unsigned int len)
{
cxusb_vprintk(dvbdev, AUXB, "initializing auxbuf of len %u\n", 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;
int i;
bool ret;
for (i = 0, len = 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 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 && 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 && 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 void cxusb_medion_cf_refc_start_sch(struct dvb_usb_device *dvbdev,
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 (!sav_code || firstfield != firstfield_code)
return;
if (!vbi_code) {
cxusb_vprintk(dvbdev, BT656, "line start @ pos %u\n",
bt656->pos);
bt656->linesamples = 0;
bt656->fmode = LINE_SAMPLES;
} else {
cxusb_vprintk(dvbdev, BT656, "VBI start @ pos %u\n",
bt656->pos);
bt656->fmode = VBI_SAMPLES;
}
}
static void 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 (sav_code)
cxusb_vprintk(dvbdev, BT656,
"SAV in line samples @ line %u, pos %u\n",
bt656->line, bt656->pos);
remsamples = maxlinesamples - bt656->linesamples;
if (bt656->buf && 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++;
}
static void 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 (sav_code)
cxusb_vprintk(dvbdev, BT656, "SAV in VBI samples @ pos %u\n",
bt656->pos);
bt656->fmode = START_SEARCH;
}
/* returns whether the whole 4-byte code should be skipped in the buffer */
static bool cxusb_medion_cf_ref_code(struct dvb_usb_device *dvbdev,
struct cxusb_bt656_params *bt656,
bool firstfield,
unsigned int maxlines,
unsigned int maxlinesamples,
unsigned char buf[4])
{
if (bt656->fmode == START_SEARCH) {
cxusb_medion_cf_refc_start_sch(dvbdev, bt656, firstfield, buf);
} else if (bt656->fmode == LINE_SAMPLES) {
cxusb_medion_cf_refc_line_smpl(dvbdev, bt656, firstfield,
maxlinesamples, buf);
return false;
} else if (bt656->fmode == VBI_SAMPLES) {
cxusb_medion_cf_refc_vbi_smpl(dvbdev, bt656, buf);
return false;
}
return true;
}
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 (!cxusb_auxbuf_copy(auxbuf, bt656->pos + 1, buf, tocheck))
return false;
for (idx = 0; idx <= tocheck - 3; idx++)
if (memcmp(buf + idx, CXUSB_BT656_PREAMBLE, 3) == 0) {
bt656->pos += (1 + idx);
return true;
}
cxusb_vprintk(dvbdev, BT656, "line %u early start, pos %u\n",
bt656->line, bt656->pos);
bt656->linesamples = 0;
bt656->fmode = LINE_SAMPLES;
return true;
}
static void cxusb_medion_cs_line_smpl(struct cxusb_bt656_params *bt656,
unsigned int maxlinesamples,
unsigned char val)
{
if (bt656->buf)
*(bt656->buf++) = val;
bt656->linesamples++;
bt656->pos++;
if (bt656->linesamples >= maxlinesamples) {
bt656->fmode = START_SEARCH;
bt656->line++;
}
}
static bool 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 (bt656->fmode == START_SEARCH && bt656->line > 0)
return cxusb_medion_cs_start_sch(dvbdev, auxbuf, bt656,
maxlinesamples);
else if (bt656->fmode == LINE_SAMPLES)
cxusb_medion_cs_line_smpl(bt656, maxlinesamples, val);
else /* TODO: copy VBI samples */
bt656->pos++;
return true;
}
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) {
unsigned char val;
if (!cxusb_auxbuf_copy(auxbuf, bt656->pos, &val, 1))
break;
if (val == CXUSB_BT656_PREAMBLE[0]) {
unsigned char buf[4];
buf[0] = val;
if (!cxusb_auxbuf_copy(auxbuf, bt656->pos + 1,
buf + 1, 3))
break;
if (buf[1] == CXUSB_BT656_PREAMBLE[1] &&
buf[2] == CXUSB_BT656_PREAMBLE[2]) {
/*
* is this a field change?
* if so, terminate copying the current field
*/
if (cxusb_medion_cf_refc_fld_chg(dvbdev,
bt656,
firstfield,
maxlines,
maxlinesmpls,
buf))
return true;
if (cxusb_medion_cf_ref_code(dvbdev, bt656,
firstfield,
maxlines,
maxlinesmpls,
buf))
bt656->pos += 4;
continue;
}
}
if (!cxusb_medion_copy_samples(dvbdev, auxbuf, bt656,
maxlinesmpls, val))
break;
}
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 bool cxusb_medion_v_process_auxbuf(struct cxusb_medion_dev *cxdev,
bool reset)
{
struct dvb_usb_device *dvbdev = cxdev->dvbdev;
struct cxusb_bt656_params *bt656 = &cxdev->bt656;
/*
* 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);
} else {
dev_warn(&dvbdev->udev->dev, "no free buffers\n");
}
}
if (bt656->mode == NEW_FRAME || reset) {
cxusb_vprintk(dvbdev, URB, "will copy field 1\n");
bt656->pos = 0;
bt656->mode = FIRST_FIELD;
bt656->fmode = START_SEARCH;
bt656->line = 0;
if (cxdev->vbuf) {
cxdev->vbuf->vb2.vb2_buf.timestamp = ktime_get_ns();
bt656->buf = vb2_plane_vaddr(&cxdev->vbuf->vb2.vb2_buf,
0);
}
}
if (bt656->mode == FIRST_FIELD) {
if (!cxusb_medion_copy_field(dvbdev, &cxdev->auxbuf, bt656,
true, cxdev->height / 2,
cxdev->width * 2))
return false;
/*
* do not trim buffer there in case
* we need to reset the search later
*/
cxusb_vprintk(dvbdev, URB, "will copy field 2\n");
bt656->mode = SECOND_FIELD;
bt656->fmode = START_SEARCH;
bt656->line = 0;
}
if (bt656->mode == SECOND_FIELD) {
if (!cxusb_medion_copy_field(dvbdev, &cxdev->auxbuf, bt656,
false, cxdev->height / 2,
cxdev->width * 2))
return false;
cxusb_auxbuf_head_trim(dvbdev, &cxdev->auxbuf, bt656->pos);
bt656->mode = NEW_FRAME;
if (cxdev->vbuf) {
vb2_set_plane_payload(&cxdev->vbuf->vb2.vb2_buf, 0,
cxdev->width * cxdev->height * 2);
cxdev->vbuf->vb2.field = cxdev->field_order;
cxdev->vbuf->vb2.sequence = cxdev->vbuf_sequence++;
vb2_buffer_done(&cxdev->vbuf->vb2.vb2_buf,
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");
cxdev->vbuf_sequence++;
}
}
return true;
}
static bool cxusb_medion_v_complete_handle_urb(struct cxusb_medion_dev *cxdev,
bool *auxbuf_reset)
{
struct dvb_usb_device *dvbdev = cxdev->dvbdev;
unsigned int urbn;
struct urb *urb;
int ret;
*auxbuf_reset = false;
urbn = cxdev->nexturb;
if (!test_bit(urbn, &cxdev->urbcomplete))
return false;
clear_bit(urbn, &cxdev->urbcomplete);
do {
cxdev->nexturb++;
cxdev->nexturb %= CXUSB_VIDEO_URBS;
urb = cxdev->streamurbs[cxdev->nexturb];
} while (!urb);
urb = cxdev->streamurbs[urbn];
cxusb_vprintk(dvbdev, URB, "URB %u status = %d\n", urbn, urb->status);
if (urb->status == 0 || urb->status == -EXDEV) {
int i;
unsigned long len;
for (i = 0, len = 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) {
cxusb_vprintk(dvbdev, URB, "appending URB\n");
/*
* append new data to auxbuf while
* overwriting old data if necessary
*
* if any overwrite happens then we can no
* longer rely on consistency of the whole
* data so let's start again the current
* auxbuf frame assembling process from
* the beginning
*/
*auxbuf_reset =
!cxusb_auxbuf_append_urb(dvbdev,
&cxdev->auxbuf,
urb);
}
}
cxusb_vprintk(dvbdev, URB, "URB %u resubmit\n", urbn);
ret = usb_submit_urb(urb, GFP_KERNEL);
if (ret != 0)
dev_err(&dvbdev->udev->dev,
"unable to resubmit URB %u (%d), you'll have to restart streaming\n",
urbn, ret);
/* next URB is complete already? reschedule us then to handle it */
return test_bit(cxdev->nexturb, &cxdev->urbcomplete);
}
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;
bool auxbuf_reset;
bool reschedule;
mutex_lock(cxdev->videodev->lock);
cxusb_vprintk(dvbdev, URB, "worker called, stop_streaming = %d\n",
(int)cxdev->stop_streaming);
if (cxdev->stop_streaming)
goto unlock;
reschedule = cxusb_medion_v_complete_handle_urb(cxdev, &auxbuf_reset);
if (cxusb_medion_v_process_auxbuf(cxdev, auxbuf_reset))
/* reschedule us until auxbuf no longer can produce any frame */
reschedule = true;
if (reschedule) {
cxusb_vprintk(dvbdev, URB, "rescheduling worker\n");
schedule_work(&cxdev->urbwork);
}
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 %u complete\n", i);
set_bit(i, &cxdev->urbcomplete);
schedule_work(&cxdev->urbwork);
}
static void cxusb_medion_urbs_free(struct cxusb_medion_dev *cxdev)
{
unsigned int i;
for (i = 0; i < CXUSB_VIDEO_URBS; i++)
if (cxdev->streamurbs[i]) {
kfree(cxdev->streamurbs[i]->transfer_buffer);
usb_free_urb(cxdev->streamurbs[i]);
cxdev->streamurbs[i] = NULL;
}
}
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.vb2_buf,
requeue ? VB2_BUF_STATE_QUEUED :
VB2_BUF_STATE_ERROR);
}
if (cxdev->vbuf) {
vb2_buffer_done(&cxdev->vbuf->vb2.vb2_buf,
requeue ? VB2_BUF_STATE_QUEUED :
VB2_BUF_STATE_ERROR);
cxdev->vbuf = NULL;
cxdev->bt656.buf = NULL;
}
}
static int cxusb_medion_v_ss_auxbuf_alloc(struct cxusb_medion_dev *cxdev,
int *npackets)
{
struct dvb_usb_device *dvbdev = cxdev->dvbdev;
u8 *buf;
unsigned int framelen, urblen, auxbuflen;
framelen = (cxdev->width * 2 + 4 + 4) *
(cxdev->height + 50 /* VBI lines */);
/*
* try to fit a whole frame into each URB, as long as doing so
* does not require very high order memory allocations
*/
BUILD_BUG_ON(CXUSB_VIDEO_URB_MAX_SIZE / CXUSB_VIDEO_PKT_SIZE >
CXUSB_VIDEO_MAX_FRAME_PKTS);
*npackets = min_t(int, (framelen + CXUSB_VIDEO_PKT_SIZE - 1) /
CXUSB_VIDEO_PKT_SIZE,
CXUSB_VIDEO_URB_MAX_SIZE / CXUSB_VIDEO_PKT_SIZE);
urblen = *npackets * CXUSB_VIDEO_PKT_SIZE;
cxusb_vprintk(dvbdev, URB,
"each URB will have %d packets for total of %u bytes (%u x %u @ %u)\n",
*npackets, urblen, (unsigned int)cxdev->width,
(unsigned int)cxdev->height, framelen);
auxbuflen = framelen + urblen;
buf = vmalloc(auxbuflen);
if (!buf)
return -ENOMEM;
cxusb_auxbuf_init(dvbdev, &cxdev->auxbuf, buf, auxbuflen);
return 0;
}
static u32 cxusb_medion_norm2field_order(v4l2_std_id norm)
{
bool is625 = norm & V4L2_STD_625_50;
bool is525 = norm & V4L2_STD_525_60;
if (!is625 && !is525)
return V4L2_FIELD_NONE;
if (is625 && is525)
return V4L2_FIELD_NONE;
if (is625)
return V4L2_FIELD_SEQ_TB;
else /* is525 */
return V4L2_FIELD_SEQ_BT;
}
static u32 cxusb_medion_field_order(struct cxusb_medion_dev *cxdev)
{
struct dvb_usb_device *dvbdev = cxdev->dvbdev;
u32 field;
int ret;
v4l2_std_id norm;
/* TV tuner is PAL-only so it is always TB */
if (cxdev->input == 0)
return V4L2_FIELD_SEQ_TB;
field = cxusb_medion_norm2field_order(cxdev->norm);
if (field != V4L2_FIELD_NONE)
return field;
ret = v4l2_subdev_call(cxdev->cx25840, video, g_std, &norm);
if (ret != 0) {
cxusb_vprintk(dvbdev, OPS,
"cannot get current standard for input %u\n",
(unsigned int)cxdev->input);
} else {
field = cxusb_medion_norm2field_order(norm);
if (field != V4L2_FIELD_NONE)
return field;
}
dev_warn(&dvbdev->udev->dev,
"cannot determine field order for the current standard setup and received signal, using TB\n");
return V4L2_FIELD_SEQ_TB;
}
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");
if (cxdev->stop_streaming) {
/* stream is being stopped */
ret = -EBUSY;
goto ret_retbufs;
}
cxdev->field_order = cxusb_medion_field_order(cxdev);
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;
}
ret = cxusb_medion_v_ss_auxbuf_alloc(cxdev, &npackets);
if (ret != 0)
goto ret_unstream_md;
for (i = 0; i < CXUSB_VIDEO_URBS; i++) {
int framen;
u8 *streambuf;
struct urb *surb;
/*
* TODO: change this to an array of single pages to avoid
* doing a large continuous allocation when (if)
* s-g isochronous USB transfers are supported
*/
streambuf = kmalloc(npackets * CXUSB_VIDEO_PKT_SIZE,
GFP_KERNEL);
if (!streambuf) {
if (i < 2) {
ret = -ENOMEM;
goto ret_freeab;
}
break;
}
surb = usb_alloc_urb(npackets, GFP_KERNEL);
if (!surb) {
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_sequence = 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]) {
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);
}
return 0;
ret_freeu:
cxusb_medion_urbs_free(cxdev);
ret_freeab:
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 ret;
unsigned int i;
cxusb_vprintk(dvbdev, OPS, "should stop streaming\n");
if (WARN_ON(cxdev->stop_streaming))
return;
cxdev->stop_streaming = true;
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])
usb_kill_urb(cxdev->streamurbs[i]);
flush_work(&cxdev->urbwork);
mutex_lock(cxdev->videodev->lock);
/* free transfer buffer and URB */
vfree(cxdev->auxbuf.buf);
cxusb_medion_urbs_free(cxdev);
cxusb_medion_return_buffers(cxdev, false);
cxdev->stop_streaming = false;
}
static void cxusub_medion_v_buf_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *v4l2buf = to_vb2_v4l2_buffer(vb);
struct cxusb_medion_vbuffer *vbuf =
container_of(v4l2buf, 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.. a fresh buffer...\n"); */
list_add_tail(&vbuf->list, &cxdev->buflist);
}
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 = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish
};
static const __u32 videocaps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
static const __u32 radiocaps = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
static int cxusb_medion_v_querycap(struct file *file, void *fh,
struct v4l2_capability *cap)
{
struct dvb_usb_device *dvbdev = video_drvdata(file);
strscpy(cap->driver, dvbdev->udev->dev.driver->name,
sizeof(cap->driver));
strscpy(cap->card, "Medion 95700", sizeof(cap->card));
usb_make_path(dvbdev->udev, cap->bus_info, sizeof(cap->bus_info));
cap->capabilities = videocaps | radiocaps | V4L2_CAP_DEVICE_CAPS;
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->pixelformat = V4L2_PIX_FMT_UYVY;
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 = vb2_start_streaming_called(&cxdev->videoqueue) ?
cxdev->field_order : cxusb_medion_field_order(cxdev);
f->fmt.pix.bytesperline = cxdev->width * 2;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height;
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 = {
.which = isset ? V4L2_SUBDEV_FORMAT_ACTIVE :
V4L2_SUBDEV_FORMAT_TRY,
};
u32 field;
int ret;
if (isset && vb2_is_busy(&cxdev->videoqueue))
return -EBUSY;
field = vb2_start_streaming_called(&cxdev->videoqueue) ?
cxdev->field_order : cxusb_medion_field_order(cxdev);
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 = field;
subfmt.format.colorspace = V4L2_COLORSPACE_SMPTE170M;
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 = field;
f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
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_set_norm(struct cxusb_medion_dev *cxdev,
v4l2_std_id norm)
{
struct dvb_usb_device *dvbdev = cxdev->dvbdev;
int ret;
cxusb_vprintk(dvbdev, OPS,
"trying to set standard for input %u to %lx\n",
(unsigned int)cxdev->input,
(unsigned long)norm);
/* no autodetection support */
if (norm == V4L2_STD_UNKNOWN)
return -EINVAL;
/* 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;
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_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;
v4l2_std_id norm;
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;
cxdev->videodev->tvnorms = cxusb_medion_inputs[i].input.std;
norm = cxdev->norm & cxusb_medion_inputs[i].input.std;
if (norm == 0)
norm = cxusb_medion_inputs[i].input.std;
cxusb_medion_set_norm(cxdev, norm);
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_VIDEO)
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_VIDEO)
strscpy(tuner->name, "TV tuner", sizeof(tuner->name));
else
strscpy(tuner->name, "Radio tuner", sizeof(tuner->name));
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_VIDEO)
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_VIDEO)
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;
*norm = cxdev->norm;
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;
return cxusb_medion_set_norm(cxdev, norm);
}
static int cxusb_medion_querystd(struct file *file, void *fh,
v4l2_std_id *norm)
{
struct dvb_usb_device *dvbdev = video_drvdata(file);
struct cxusb_medion_dev *cxdev = dvbdev->priv;
v4l2_std_id norm_mask;
int ret;
/*
* make sure we don't have improper std bits set for the TV tuner
* (could happen when no signal was present yet after reset)
*/
if (cxdev->input == 0)
norm_mask = V4L2_STD_PAL;
else
norm_mask = V4L2_STD_ALL;
ret = v4l2_subdev_call(cxdev->cx25840, video, querystd, norm);
if (ret != 0) {
cxusb_vprintk(dvbdev, OPS,
"cannot get detected standard for input %u\n",
(unsigned int)cxdev->input);
return ret;
}
cxusb_vprintk(dvbdev, OPS, "input %u detected standard is %lx\n",
(unsigned int)cxdev->input, (unsigned long)*norm);
*norm &= norm_mask;
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_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_querystd = cxusb_medion_querystd,
.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 = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
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);
/*
* cx25840 might have lost power during mode switching so we need
* to set it again
*/
ret = v4l2_subdev_call(cxdev->cx25840, core, reset, 0);
if (ret != 0)
dev_warn(&dvbdev->udev->dev,
"cx25840 reset failed (%d)\n", ret);
ret = v4l2_subdev_call(cxdev->cx25840, video, s_routing,
CX25840_COMPOSITE1, 0, 0);
if (ret != 0)
dev_warn(&dvbdev->udev->dev,
"cx25840 initial input setting failed (%d)\n", ret);
/* composite */
cxdev->input = 1;
cxdev->videodev->tvnorms = V4L2_STD_ALL;
cxdev->norm = V4L2_STD_PAL;
/* TODO: setup audio samples insertion */
ret = v4l2_subdev_call(cxdev->cx25840, core, s_io_pin_config,
ARRAY_SIZE(cxusub_medion_pin_config),
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, cxdev->norm);
v4l2_subdev_call(cxdev->tuner, video, s_std, cxdev->norm);
v4l2_subdev_call(cxdev->cx25840, video, s_std, cxdev->norm);
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)
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_VIDEO)
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");
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 |
VB2_DMABUF;
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;
cxdev->videoqueue.min_buffers_needed = 6;
cxdev->videoqueue.lock = &cxdev->dev_lock;
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) {
dev_err(&dvbdev->udev->dev, "video device alloc failed\n");
return -ENOMEM;
}
cxdev->videodev->device_caps = videocaps;
cxdev->videodev->fops = &cxusb_video_fops;
cxdev->videodev->v4l2_dev = &cxdev->v4l2dev;
cxdev->videodev->queue = &cxdev->videoqueue;
strscpy(cxdev->videodev->name, "cxusb", sizeof(cxdev->videodev->name));
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_VIDEO, -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);
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) {
dev_err(&dvbdev->udev->dev, "radio device alloc failed\n");
return -ENOMEM;
}
cxdev->radiodev->device_caps = radiocaps;
cxdev->radiodev->fops = &cxusb_radio_fops;
cxdev->radiodev->v4l2_dev = &cxdev->v4l2dev;
strscpy(cxdev->radiodev->name, "cxusb", sizeof(cxdev->radiodev->name));
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;
int ret;
struct tuner_setup tun_setup;
/* attach cx25840 capture chip */
cxdev->cx25840 = v4l2_i2c_new_subdev(&cxdev->v4l2dev,
&dvbdev->i2c_adap,
"cx25840", 0x44, NULL);
if (!cxdev->cx25840) {
dev_err(&dvbdev->udev->dev, "cx25840 not found\n");
return -ENODEV;
}
/*
* Initialize cx25840 chip by calling its subdevice init core op.
*
* This switches it into the generic mode that disables some of
* ivtv-related hacks in the cx25840 driver while allowing setting
* of the chip video output configuration (passed in the call below
* as the last argument).
*/
ret = v4l2_subdev_call(cxdev->cx25840, core, init,
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_err(&dvbdev->udev->dev,
"cx25840 init failed (%d)\n", ret);
return ret;
}
/* attach analog tuner */
cxdev->tuner = v4l2_i2c_new_subdev(&cxdev->v4l2dev,
&dvbdev->i2c_adap,
"tuner", 0x61, NULL);
if (!cxdev->tuner) {
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) {
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:
vb2_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);
vb2_video_unregister_device(cxdev->videodev);
v4l2_device_put(&cxdev->v4l2dev);
wait_for_completion(&cxdev->v4l2_release);
cxusb_vprintk(dvbdev, OPS, "analog unregistered\n");
}
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