static int cx18_encoder_cmd(struct file *file, void *fh,
struct v4l2_encoder_cmd *enc)
{
struct cx18_open_id *id = fh;
struct cx18 *cx = id->cx;
u32 h;
switch (enc->cmd) {
case V4L2_ENC_CMD_START:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
enc->flags = 0;
return cx18_start_capture(id);
case V4L2_ENC_CMD_STOP:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
cx18_stop_capture(id,
enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
break;
case V4L2_ENC_CMD_PAUSE:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
enc->flags = 0;
if (!atomic_read(&cx->ana_capturing))
return -EPERM;
if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
return 0;
h = cx18_find_handle(cx);
if (h == CX18_INVALID_TASK_HANDLE) {
CX18_ERR("Can't find valid task handle for "
"V4L2_ENC_CMD_PAUSE\n");
return -EBADFD;
}
cx18_mute(cx);
cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, h);
break;
case V4L2_ENC_CMD_RESUME:
CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
enc->flags = 0;
if (!atomic_read(&cx->ana_capturing))
return -EPERM;
if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
return 0;
h = cx18_find_handle(cx);
if (h == CX18_INVALID_TASK_HANDLE) {
CX18_ERR("Can't find valid task handle for "
"V4L2_ENC_CMD_RESUME\n");
return -EBADFD;
}
cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, h);
cx18_unmute(cx);
break;
default:
CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
return -EINVAL;
}
return 0;
}
int cx18_s_input(struct file *file, void *fh, unsigned int inp)
{
struct cx18_open_id *id = fh;
struct cx18 *cx = id->cx;
int ret;
ret = v4l2_prio_check(&cx->prio, &id->prio);
if (ret)
return ret;
if (inp < 0 || inp >= cx->nof_inputs)
return -EINVAL;
if (inp == cx->active_input) {
CX18_DEBUG_INFO("Input unchanged\n");
return 0;
}
CX18_DEBUG_INFO("Changing input from %d to %d\n",
cx->active_input, inp);
cx->active_input = inp;
/* Set the audio input to whatever is appropriate for the input type. */
cx->audio_input = cx->card->video_inputs[inp].audio_index;
/* prevent others from messing with the streams until
we're finished changing inputs. */
cx18_mute(cx);
cx18_video_set_io(cx);
cx18_audio_set_io(cx);
cx18_unmute(cx);
return 0;
}
static int cx18_serialized_open(struct cx18_stream *s, struct file *filp)
{
struct cx18 *cx = s->cx;
struct cx18_open_id *item;
CX18_DEBUG_FILE("open %s\n", s->name);
/* Allocate memory */
item = kmalloc(sizeof(struct cx18_open_id), GFP_KERNEL);
if (NULL == item) {
CX18_DEBUG_WARN("nomem on v4l2 open\n");
return -ENOMEM;
}
item->cx = cx;
item->type = s->type;
v4l2_prio_open(&cx->prio, &item->prio);
item->open_id = cx->open_id++;
filp->private_data = item;
if (item->type == CX18_ENC_STREAM_TYPE_RAD) {
/* Try to claim this stream */
if (cx18_claim_stream(item, item->type)) {
/* No, it's already in use */
kfree(item);
return -EBUSY;
}
if (!test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) {
if (atomic_read(&cx->ana_capturing) > 0) {
/* switching to radio while capture is
in progress is not polite */
cx18_release_stream(s);
kfree(item);
return -EBUSY;
}
}
/* Mark that the radio is being used. */
set_bit(CX18_F_I_RADIO_USER, &cx->i_flags);
/* We have the radio */
cx18_mute(cx);
/* Switch tuner to radio */
cx18_call_i2c_clients(cx, AUDC_SET_RADIO, NULL);
/* Select the correct audio input (i.e. radio tuner) */
cx18_audio_set_io(cx);
/* Done! Unmute and continue. */
cx18_unmute(cx);
}
return 0;
}
int cx18_v4l2_close(struct inode *inode, struct file *filp)
{
struct cx18_open_id *id = filp->private_data;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
CX18_DEBUG_IOCTL("close() of %s\n", s->name);
v4l2_prio_close(&cx->prio, &id->prio);
/* Easy case first: this stream was never claimed by us */
if (s->id != id->open_id) {
kfree(id);
return 0;
}
/* 'Unclaim' this stream */
/* Stop radio */
mutex_lock(&cx->serialize_lock);
if (id->type == CX18_ENC_STREAM_TYPE_RAD) {
/* Closing radio device, return to TV mode */
cx18_mute(cx);
/* Mark that the radio is no longer in use */
clear_bit(CX18_F_I_RADIO_USER, &cx->i_flags);
/* Switch tuner to TV */
cx18_call_i2c_clients(cx, VIDIOC_S_STD, &cx->std);
/* Select correct audio input (i.e. TV tuner or Line in) */
cx18_audio_set_io(cx);
if (atomic_read(&cx->ana_capturing) > 0) {
/* Undo video mute */
cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle,
cx->params.video_mute |
(cx->params.video_mute_yuv << 8));
}
/* Done! Unmute and continue. */
cx18_unmute(cx);
cx18_release_stream(s);
} else {
cx18_stop_capture(id, 0);
}
kfree(id);
mutex_unlock(&cx->serialize_lock);
return 0;
}
int cx18_s_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
{
struct cx18_open_id *id = fh;
struct cx18 *cx = id->cx;
int ret;
ret = v4l2_prio_check(&cx->prio, &id->prio);
if (ret)
return ret;
if (vf->tuner != 0)
return -EINVAL;
cx18_mute(cx);
CX18_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf->frequency);
cx18_call_i2c_clients(cx, VIDIOC_S_FREQUENCY, vf);
cx18_unmute(cx);
return 0;
}
