static irqreturn_t s3c_fimc_irq(int irq, void *dev_id)
{
struct s3c_fimc_control *ctrl = (struct s3c_fimc_control *) dev_id;
s3c_fimc_clear_irq(ctrl);
s3c_fimc_check_fifo(ctrl);
if (IS_CAPTURE(ctrl)) {
dev_dbg(ctrl->dev, "irq is in capture state\n");
if (s3c_fimc_frame_handler(ctrl) == S3C_FIMC_FRAME_SKIP)
return IRQ_HANDLED;
wake_up_interruptible(&ctrl->waitq);
}
return IRQ_HANDLED;
}
static
ssize_t s3c_fimc_read(struct file *filp, char *buf, size_t count, loff_t *pos)
{
struct s3c_fimc_control *ctrl = filp->private_data;
size_t end;
if (IS_CAPTURE(ctrl)) {
if (wait_event_interruptible(ctrl->waitq, IS_IRQ_HANDLING(ctrl)))
return -ERESTARTSYS;
FSET_STOP(ctrl);
}
//printk("[CAM]ctrl->out_frame.buf_size=%d,count=%d.\n",ctrl->out_frame.buf_size,count);
end = min_t(size_t, ctrl->out_frame.buf_size, count);
if (copy_to_user(buf, s3c_fimc_get_current_frame(ctrl), end))
return -EFAULT;
return end;
}
/*
Types of moves:
1) King normal move
2) King captures
3) King castles
4)
*/
int playMove(const position * const pos, position *newPosition, const move * const m, const int player)
{
int opponent;
opponent = OPPONENT(player);
/* assert consistency of position */
assertPosition(pos);
/* opponent cannot be check, this should be handled elsewhere */
assert(!inCheck(pos, opponent, pos->kingSquare[opponent]));
/* init new position to old position */
*newPosition = *pos;
/* opponent has to play in the new position */
newPosition->toPlay = opponent;
movePiece(newPosition, m, player);
if(IS_CAPTURE(m)) {
/* clear bitmask for captured piece */
clearCapturedPiece(newPosition, m);
}
/* ep is disabled after any move played */
DISABLE_EP(newPosition);
/* assert consistency of new position */
assertPosition(newPosition);
return 0;
}
