/**
* vpif_channel_isr : ISR handler for vpif capture
* @irq: irq number
* @dev_id: dev_id ptr
*
* It changes status of the captured buffer, takes next buffer from the queue
* and sets its address in VPIF registers
*/
static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
{
struct vpif_device *dev = &vpif_obj;
struct common_obj *common;
struct channel_obj *ch;
enum v4l2_field field;
int channel_id = 0;
int fid = -1, i;
channel_id = *(int *)(dev_id);
ch = dev->dev[channel_id];
field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
common = &ch->common[i];
/* skip If streaming is not started in this channel */
if (0 == common->started)
continue;
/* Check the field format */
if (1 == ch->vpifparams.std_info.frm_fmt) {
/* Progressive mode */
if (list_empty(&common->dma_queue))
continue;
if (!channel_first_int[i][channel_id])
vpif_process_buffer_complete(common);
channel_first_int[i][channel_id] = 0;
vpif_schedule_next_buffer(common);
channel_first_int[i][channel_id] = 0;
} else {
/**
* Interlaced mode. If it is first interrupt, ignore
* it
*/
if (channel_first_int[i][channel_id]) {
channel_first_int[i][channel_id] = 0;
continue;
}
if (0 == i) {
ch->field_id ^= 1;
/* Get field id from VPIF registers */
fid = vpif_channel_getfid(ch->channel_id);
if (fid != ch->field_id) {
/**
* If field id does not match stored
* field id, make them in sync
*/
if (0 == fid)
ch->field_id = fid;
return IRQ_HANDLED;
}
}
/* device field id and local field id are in sync */
if (0 == fid) {
/* this is even field */
if (common->cur_frm == common->next_frm)
continue;
/* mark the current buffer as done */
vpif_process_buffer_complete(common);
} else if (1 == fid) {
/* odd field */
if (list_empty(&common->dma_queue) ||
(common->cur_frm != common->next_frm))
continue;
vpif_schedule_next_buffer(common);
}
}
}
return IRQ_HANDLED;
}
static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
{
struct vpif_device *dev = &vpif_obj;
struct common_obj *common;
struct channel_obj *ch;
enum v4l2_field field;
int channel_id = 0;
int fid = -1, i;
channel_id = *(int *)(dev_id);
ch = dev->dev[channel_id];
field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
common = &ch->common[i];
if (0 == common->started)
continue;
if (1 == ch->vpifparams.std_info.frm_fmt) {
if (list_empty(&common->dma_queue))
continue;
if (!channel_first_int[i][channel_id])
vpif_process_buffer_complete(common);
channel_first_int[i][channel_id] = 0;
vpif_schedule_next_buffer(common);
channel_first_int[i][channel_id] = 0;
} else {
if (channel_first_int[i][channel_id]) {
channel_first_int[i][channel_id] = 0;
continue;
}
if (0 == i) {
ch->field_id ^= 1;
fid = vpif_channel_getfid(ch->channel_id);
if (fid != ch->field_id) {
if (0 == fid)
ch->field_id = fid;
return IRQ_HANDLED;
}
}
if (0 == fid) {
if (common->cur_frm == common->next_frm)
continue;
vpif_process_buffer_complete(common);
} else if (1 == fid) {
if (list_empty(&common->dma_queue) ||
(common->cur_frm != common->next_frm))
continue;
vpif_schedule_next_buffer(common);
}
}
}
return IRQ_HANDLED;
}