static int vpif_release(struct file *filep)
{
struct vpif_fh *fh = filep->private_data;
struct channel_obj *ch = fh->channel;
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
if (mutex_lock_interruptible(&common->lock))
return -ERESTARTSYS;
/* if this instance is doing IO */
if (fh->io_allowed[VPIF_VIDEO_INDEX]) {
/* Reset io_usrs member of channel object */
common->io_usrs = 0;
/* Disable channel */
if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
enable_channel2(0);
channel2_intr_enable(0);
}
if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
(2 == common->started)) {
enable_channel3(0);
channel3_intr_enable(0);
}
common->started = 0;
/* Free buffers allocated */
videobuf_queue_cancel(&common->buffer_queue);
videobuf_mmap_free(&common->buffer_queue);
common->numbuffers =
config_params.numbuffers[ch->channel_id];
}
mutex_unlock(&common->lock);
/* Decrement channel usrs counter */
atomic_dec(&ch->usrs);
/* If this file handle has initialize encoder device, reset it */
if (fh->initialized)
ch->initialized = 0;
/* Close the priority */
v4l2_prio_close(&ch->prio, fh->prio);
filep->private_data = NULL;
fh->initialized = 0;
kfree(fh);
return 0;
}
static int vpif_streamoff(struct file *file, void *priv,
enum v4l2_buf_type buftype)
{
struct vpif_fh *fh = priv;
struct channel_obj *ch = fh->channel;
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
vpif_err("buffer type not supported\n");
return -EINVAL;
}
if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
vpif_err("fh->io_allowed\n");
return -EACCES;
}
if (!common->started) {
vpif_err("channel->started\n");
return -EINVAL;
}
if (mutex_lock_interruptible(&common->lock))
return -ERESTARTSYS;
if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
/* disable channel */
if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
enable_channel2(0);
channel2_intr_enable(0);
}
if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
(2 == common->started)) {
enable_channel3(0);
channel3_intr_enable(0);
}
}
common->started = 0;
mutex_unlock(&common->lock);
return videobuf_streamoff(&common->buffer_queue);
}
static int vpif_streamon(struct file *file, void *priv,
enum v4l2_buf_type buftype)
{
struct vpif_fh *fh = priv;
struct channel_obj *ch = fh->channel;
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id];
struct vpif_params *vpif = &ch->vpifparams;
struct vpif_display_config *vpif_config_data =
vpif_dev->platform_data;
unsigned long addr = 0;
int ret = 0;
if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
vpif_err("buffer type not supported\n");
return -EINVAL;
}
if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
vpif_err("fh->io_allowed\n");
return -EACCES;
}
/* If Streaming is already started, return error */
if (common->started) {
vpif_err("channel->started\n");
return -EBUSY;
}
if ((ch->channel_id == VPIF_CHANNEL2_VIDEO
&& oth_ch->common[VPIF_VIDEO_INDEX].started &&
ch->vpifparams.std_info.ycmux_mode == 0)
|| ((ch->channel_id == VPIF_CHANNEL3_VIDEO)
&& (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) {
vpif_err("other channel is using\n");
return -EBUSY;
}
ret = vpif_check_format(ch, &common->fmt.fmt.pix);
if (ret < 0)
return ret;
/* Call videobuf_streamon to start streaming in videobuf */
ret = videobuf_streamon(&common->buffer_queue);
if (ret < 0) {
vpif_err("videobuf_streamon\n");
return ret;
}
/* If buffer queue is empty, return error */
if (list_empty(&common->dma_queue)) {
vpif_err("buffer queue is empty\n");
return -EIO;
}
/* Get the next frame from the buffer queue */
common->next_frm = common->cur_frm =
list_entry(common->dma_queue.next,
struct videobuf_buffer, queue);
list_del(&common->cur_frm->queue);
/* Mark state of the current frame to active */
common->cur_frm->state = VIDEOBUF_ACTIVE;
/* Initialize field_id and started member */
ch->field_id = 0;
common->started = 1;
if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
addr = common->cur_frm->boff;
/* Calculate the offset for Y and C data in the buffer */
vpif_calculate_offsets(ch);
if ((ch->vpifparams.std_info.frm_fmt &&
((common->fmt.fmt.pix.field != V4L2_FIELD_NONE)
&& (common->fmt.fmt.pix.field != V4L2_FIELD_ANY)))
|| (!ch->vpifparams.std_info.frm_fmt
&& (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) {
vpif_err("conflict in field format and std format\n");
return -EINVAL;
}
/* clock settings */
ret =
vpif_config_data->set_clock(ch->vpifparams.std_info.ycmux_mode,
ch->vpifparams.std_info.hd_sd);
if (ret < 0) {
vpif_err("can't set clock\n");
return ret;
}
/* set the parameters and addresses */
ret = vpif_set_video_params(vpif, ch->channel_id + 2);
if (ret < 0)
return ret;
common->started = ret;
vpif_config_addr(ch, ret);
common->set_addr((addr + common->ytop_off),
(addr + common->ybtm_off),
(addr + common->ctop_off),
(addr + common->cbtm_off));
/* Set interrupt for both the fields in VPIF
Register enable channel in VPIF register */
if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
channel2_intr_assert();
channel2_intr_enable(1);
enable_channel2(1);
}
if ((VPIF_CHANNEL3_VIDEO == ch->channel_id)
|| (common->started == 2)) {
channel3_intr_assert();
channel3_intr_enable(1);
enable_channel3(1);
}
channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
}
return ret;
}
