static int cx18_prep_dev(struct cx18 *cx, int type)
{
struct cx18_stream *s = &cx->streams[type];
u32 cap = cx->v4l2_cap;
int num_offset = cx18_stream_info[type].num_offset;
int num = cx->instance + cx18_first_minor + num_offset;
/* These four fields are always initialized. If video_dev == NULL, then
this stream is not in use. In that case no other fields but these
four can be used. */
s->video_dev = NULL;
s->cx = cx;
s->type = type;
s->name = cx18_stream_info[type].name;
/* Check whether the radio is supported */
if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO))
return 0;
/* Check whether VBI is supported */
if (type == CX18_ENC_STREAM_TYPE_VBI &&
!(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE)))
return 0;
/* User explicitly selected 0 buffers for these streams, so don't
create them. */
if (cx18_stream_info[type].dma != PCI_DMA_NONE &&
cx->stream_buffers[type] == 0) {
CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
return 0;
}
cx18_stream_init(cx, type);
if (num_offset == -1)
return 0;
/* allocate and initialize the v4l2 video device structure */
s->video_dev = video_device_alloc();
if (s->video_dev == NULL) {
CX18_ERR("Couldn't allocate v4l2 video_device for %s\n",
s->name);
return -ENOMEM;
}
snprintf(s->video_dev->name, sizeof(s->video_dev->name), "%s %s",
cx->v4l2_dev.name, s->name);
s->video_dev->num = num;
s->video_dev->v4l2_dev = &cx->v4l2_dev;
s->video_dev->fops = &cx18_v4l2_enc_fops;
s->video_dev->release = video_device_release;
s->video_dev->tvnorms = V4L2_STD_ALL;
cx18_set_funcs(s->video_dev);
return 0;
}
static int cx18_prep_dev(struct cx18 *cx, int type)
{
struct cx18_stream *s = &cx->streams[type];
u32 cap = cx->v4l2_cap;
int num_offset = cx18_stream_info[type].num_offset;
int num = cx->instance + cx18_first_minor + num_offset;
/*
* These five fields are always initialized.
* For analog capture related streams, if video_dev == NULL then the
* stream is not in use.
* For the TS stream, if dvb == NULL then the stream is not in use.
* In those cases no other fields but these four can be used.
*/
s->video_dev = NULL;
s->dvb = NULL;
s->cx = cx;
s->type = type;
s->name = cx18_stream_info[type].name;
/* Check whether the radio is supported */
if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO))
return 0;
/* Check whether VBI is supported */
if (type == CX18_ENC_STREAM_TYPE_VBI &&
!(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE)))
return 0;
/* User explicitly selected 0 buffers for these streams, so don't
create them. */
if (cx18_stream_info[type].dma != PCI_DMA_NONE &&
cx->stream_buffers[type] == 0) {
CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
return 0;
}
cx18_stream_init(cx, type);
/* Allocate the cx18_dvb struct only for the TS on cards with DTV */
if (type == CX18_ENC_STREAM_TYPE_TS) {
if (cx->card->hw_all & CX18_HW_DVB) {
s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL);
if (s->dvb == NULL) {
CX18_ERR("Couldn't allocate cx18_dvb structure"
" for %s\n", s->name);
return -ENOMEM;
}
} else {
/* Don't need buffers for the TS, if there is no DVB */
s->buffers = 0;
}
}
if (num_offset == -1)
return 0;
/* allocate and initialize the v4l2 video device structure */
s->video_dev = video_device_alloc();
if (s->video_dev == NULL) {
CX18_ERR("Couldn't allocate v4l2 video_device for %s\n",
s->name);
return -ENOMEM;
}
snprintf(s->video_dev->name, sizeof(s->video_dev->name), "%s %s",
cx->v4l2_dev.name, s->name);
s->video_dev->num = num;
s->video_dev->v4l2_dev = &cx->v4l2_dev;
s->video_dev->fops = &cx18_v4l2_enc_fops;
s->video_dev->release = video_device_release;
s->video_dev->tvnorms = V4L2_STD_ALL;
s->video_dev->lock = &cx->serialize_lock;
set_bit(V4L2_FL_USE_FH_PRIO, &s->video_dev->flags);
cx18_set_funcs(s->video_dev);
return 0;
}
static int cx18_prep_dev(struct cx18 *cx, int type)
{
struct cx18_stream *s = &cx->streams[type];
u32 cap = cx->v4l2_cap;
int num_offset = cx18_stream_info[type].num_offset;
int num = cx->instance + cx18_first_minor + num_offset;
s->video_dev = NULL;
s->dvb = NULL;
s->cx = cx;
s->type = type;
s->name = cx18_stream_info[type].name;
if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO))
return 0;
if (type == CX18_ENC_STREAM_TYPE_VBI &&
!(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE)))
return 0;
if (cx18_stream_info[type].dma != PCI_DMA_NONE &&
cx->stream_buffers[type] == 0) {
CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
return 0;
}
cx18_stream_init(cx, type);
if (type == CX18_ENC_STREAM_TYPE_TS) {
if (cx->card->hw_all & CX18_HW_DVB) {
s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL);
if (s->dvb == NULL) {
CX18_ERR("Couldn't allocate cx18_dvb structure"
" for %s\n", s->name);
return -ENOMEM;
}
} else {
s->buffers = 0;
}
}
if (num_offset == -1)
return 0;
s->video_dev = video_device_alloc();
if (s->video_dev == NULL) {
CX18_ERR("Couldn't allocate v4l2 video_device for %s\n",
s->name);
return -ENOMEM;
}
snprintf(s->video_dev->name, sizeof(s->video_dev->name), "%s %s",
cx->v4l2_dev.name, s->name);
s->video_dev->num = num;
s->video_dev->v4l2_dev = &cx->v4l2_dev;
s->video_dev->fops = &cx18_v4l2_enc_fops;
s->video_dev->release = video_device_release;
s->video_dev->tvnorms = V4L2_STD_ALL;
set_bit(V4L2_FL_USE_FH_PRIO, &s->video_dev->flags);
cx18_set_funcs(s->video_dev);
return 0;
}