/*
 * ISR: service for P-path interrupt.
 */
static irqreturn_t on_camif_irq_p(int irq, void * dev)
{
	u32 ciprstatus;

	u32 frame;
	struct s3c2440camif_dev * pdev;

	ciprstatus = ioread32(S3C244X_CIPRSTATUS);
	if ((ciprstatus & (1<<21))== 0)
	{
		return IRQ_RETVAL(IRQ_NONE);
	}

	pdev = (struct s3c2440camif_dev *)dev;

	/* valid img_buff[x] just DMAed. */
	frame = (ciprstatus&(3<<26))>>26;
	frame = (frame+4-1)%4;

		img_buff[frame].state = CAMIF_BUFF_RGB565;

	if (pdev->cmdcode & CAMIF_CMD_STOP)
	{
		stop_capture(pdev);

		pdev->state = CAMIF_STATE_READY;
	}
	else
	{
		if (pdev->cmdcode & CAMIF_CMD_P2C)
		{
			camif_c2p(pdev);
		}

		if (pdev->cmdcode & CAMIF_CMD_WND)
		{
			update_target_wnd_regs(pdev);
		}

		if (pdev->cmdcode & CAMIF_CMD_TFMT)
		{
			update_target_fmt_regs(pdev);
		}

		if (pdev->cmdcode & CAMIF_CMD_ZOOM)
		{
			update_target_zoom_regs(pdev);
		}

		invalid_image_buffer();
	}
	pdev->cmdcode = CAMIF_CMD_NONE;
	wake_up(&pdev->cmdqueue);

	return IRQ_RETVAL(IRQ_HANDLED);
}
示例#2
0
/* update camif registers, called only when camif ready, or ISR. */
static void __inline__ update_camif_regs(s3c2440camif_dev * pdev)
{
	if (!in_irq())
	{
		while(1)	// wait until VSYNC is 'L'
		{
			barrier();
			if ((ioread32(S3C244X_CICOSTATUS)&(1<<28)) == 0)
				break;
		}
	}

	/* WARNING: don't change the statement sort below!!! */
	update_source_fmt_regs(pdev);
	update_target_wnd_regs(pdev);
	update_target_fmt_regs(pdev);
	update_target_zoom_regs(pdev);
}
示例#3
0
/*
 * ISR: service for P-path interrupt.
 */
static irqreturn_t on_camif_irq_p(int irq, void * dev)
{
	u32 ciprstatus;

	u32 frame;
	s3c2440camif_dev * pdev;

  //printk(KERN_ALERT"on_camif_irq_p\n");
	ciprstatus = ioread32(S3C244X_CIPRSTATUS);
  
	if ((ciprstatus & (1<<21))== 0)
	{
		return IRQ_RETVAL(IRQ_NONE);
	}

	pdev = (s3c2440camif_dev *)dev;

	/* valid img_buff[x] just DMAed. */
	frame = (ciprstatus&(3<<26))>>26;
	frame = (frame+4-1)%4;
  
  //printk(KERN_ALERT"on_camif_irq_p %d\n",frame);
  
  pdev->last_frame=frame;

  pdev->frame[frame].state = CAMIF_BUFF_RGB565;

	if (pdev->cmdcode & CAMIF_CMD_STOP)
	{
		stop_capture(pdev);

		pdev->state = CAMIF_STATE_READY;
	}
	else
	{
		if (pdev->cmdcode & CAMIF_CMD_P2C)
		{
			camif_c2p(pdev);
		}

		if (pdev->cmdcode & CAMIF_CMD_WND)
		{
			update_target_wnd_regs(pdev);
		}

		if (pdev->cmdcode & CAMIF_CMD_TFMT)
		{
			update_target_fmt_regs(pdev);
		}

		if (pdev->cmdcode & CAMIF_CMD_ZOOM)
		{
			update_target_zoom_regs(pdev);
		}
		//TODO signal that all frames are invalid
	}
	pdev->cmdcode = CAMIF_CMD_NONE;
	wake_up(&pdev->cmdqueue);
  //wake_up(&pdev->cap_queue);

	return IRQ_RETVAL(IRQ_HANDLED);
}
示例#4
0
/*
 * ISR: service for C-path interrupt.
 */
static irqreturn_t on_camif_irq_c(int irq, void * dev)
{
	u32 cicostatus;
	u32 frame;
  int oflow_y,oflow_cb,oflow_cr;
	s3c2440camif_dev * pdev;
  

	cicostatus = ioread32(S3C244X_CICOSTATUS);
	if ((cicostatus & (1<<21))== 0)
	{
		return IRQ_RETVAL(IRQ_NONE);
	}
  

	pdev = (s3c2440camif_dev *)dev;

	/* valid img_buff[x] just DMAed. */
	frame = (cicostatus&(3<<26))>>26;
	//frame = (frame+4-1)%4;
  
  oflow_y=(cicostatus&(1<<31))>>31;
  oflow_cb=(cicostatus&(1<<30))>>30; 
  oflow_cr=(cicostatus&(1<<29))>>29; 
  
  //img_buff[frame].state = CAMIF_BUFF_YCbCr420;
  pdev->frame[frame].state = CAMIF_BUFF_YCbCr422;
	
  //printk(KERN_ALERT"%d %d %d %d\n",img_buff[0].state,img_buff[1].state,img_buff[2].state,img_buff[3].state);

  pdev->last_frame=frame;
  //printk(KERN_ALERT"on_camif_irq_c %d %d %d %d\n",frame,oflow_y,oflow_cb,oflow_cr);

	if (pdev->cmdcode & CAMIF_CMD_STOP)
	{
		stop_capture(pdev);

		pdev->state = CAMIF_STATE_READY;
	}
	else
	{
		if (pdev->cmdcode & CAMIF_CMD_C2P)
		{
			camif_c2p(pdev);
		}

		if (pdev->cmdcode & CAMIF_CMD_WND)
		{
			update_target_wnd_regs(pdev);
		}

		if (pdev->cmdcode & CAMIF_CMD_TFMT)
		{
			update_target_fmt_regs(pdev);
		}

		if (pdev->cmdcode & CAMIF_CMD_ZOOM)
		{
			update_target_zoom_regs(pdev);
		}

		//invalid_image_buffer();
	}
	pdev->cmdcode = CAMIF_CMD_NONE;
	wake_up(&pdev->cmdqueue);
	
  //wake_up(&pdev->cap_queue);


	return IRQ_RETVAL(IRQ_HANDLED);
}