/************************************************************************************************************
*
* MODULE TYPE : FUNCTION MODULE ID :
* Name : omap_v4l2_read
* Parameter1 : struct file *file
* Parameter2 : INT8 *buf
* Parameter3 : size_t count
* Parameter4 : loff_t * ppos
* Returns : INT32 - On sucess returns 0
* - On Failure a negative number be returned
* Description : perform read operation of camera driver
* Comments :
************************************************************************************************************/
INT32 omap_v4l2_read(struct file *file, INT8 *buf, size_t count, loff_t * ppos)
{
// struct video_device *dev = video_devdata(file);
FNRESLT ret_val;
cam_data *cam = NULL;
INT32 err;
UINT32 wait_event_ret_val = DISABLE;
UINT32 retry_count = 0;
UINT32 old_width,old_height;
ret_val = v4l2_base_struct(&cam,GET_ADDRESS);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
printk(KERN_ERR "Failed to register the camera device\n");
TRACE_ERR_AND_RET(FAIL);
}
if(cam->task.bit.capture == ENABLE)
{
TRACE_ERR_AND_RET(-EBUSY);
}
start_read_again:
cam->task.bit.still = ENABLE;
/*
* configure the sensor
*/
if(cam->cam_sensor.config_dim)
{
ret_val = cam->cam_sensor.config_dim(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
}else
{
goto exit;
}
/*
* reset the isp
*/
ret_val = isp_reset(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
ret_val = isp_configure(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
/*
* Get the memory from the kernel
*/
ret_val = get_free_phy_mem(cam->capture.v2f.fmt.pix.sizeimage,&cam->still.phy_addr,&cam->still.vir_addr);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
ret_val = isp_prg_sdram_addr(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
cam->still.frame_count = DISABLE;
cam->still.wait_queue_head_t_dma_frame_complete_still = DISABLE;
/*
* Enable sensor strobe
*/
if(cam->cam_sensor.sens_strobe)
{
cam->ctrl.id = V4L2_SENS_FLASH_STROBE;
cam->ctrl.value = ENABLE;
ret_val = cam->cam_sensor.sens_strobe(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
}
ret_val = enable_ccdc(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
ret_val = enable_isp_irq0(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
/*
* Wait for interrupt from the isp interrupt service routine
*/
if(cam->still.wait_queue_head_t_dma_frame_complete_still == DISABLE)
{
wait_event_ret_val = wait_event_interruptible_timeout(cam->still.dma_frame_complete_still, \
cam->still.frame_count >= STILL_IMAGE_CAPTURE_FRAME_NUMBER, \
20 * HZ);
}
/*
* Disable sensor strobe
*/
if(cam->cam_sensor.sens_strobe)
{
cam->ctrl.id = V4L2_SENS_FLASH_STROBE;
cam->ctrl.value = DISABLE;
ret_val = cam->cam_sensor.sens_strobe(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
}
ret_val = disable_ccdc(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
ret_val = disable_isp_irq0(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
if(wait_event_ret_val == DISABLE)
{
cam->task.bit.still = DISABLE;
printk(KERN_DEBUG "wait_event_interruptible_timeout %s %d \n",__FUNCTION__,__LINE__);
printk(KERN_ERR "omap_v4l_read timeout - Frame count %d\n",cam->still.frame_count);
ret_val = free_phy_mem(cam->still.phy_addr);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
if(retry_count)
{
old_width = cam->cam_sensor.fmt.fmt.pix.width;
old_height = cam->cam_sensor.fmt.fmt.pix.height;
cam->cam_sensor.fmt.fmt.pix.width = 640;
cam->cam_sensor.fmt.fmt.pix.height = 480;
ret_val = cam->cam_sensor.config_dim(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
cam->cam_sensor.fmt.fmt.pix.width = old_width;
cam->cam_sensor.fmt.fmt.pix.height = old_height;
mdelay(200);
retry_count--;
goto start_read_again;
}
return -ETIME;
}
err = copy_to_user(buf,(UPINT8)cam->still.vir_addr, cam->capture.v2f.fmt.pix.sizeimage);
ret_val = free_phy_mem(cam->still.phy_addr);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
goto exit;
}
cam->task.bit.still = DISABLE;
return cam->capture.v2f.fmt.pix.sizeimage;
exit:
{
cam->task.bit.still = DISABLE;
return 0;
}
}
irqreturn_t omap34xx_isp_isr(int irq, void *_cam)
{
cam_data *cam = _cam;
int ret_val;
if (cam->isp->isp_main.reg.isp_irq0status.bit.ccdc_vd0_irq == 1) {
if (cam->task.bit.still == 1) {
cam->still.frame_count++;
if (cam->still.frame_count >= STILL_IMAGE_CAPTURE_FRAME_NUMBER) {
wake_up_interruptible(&cam->still.dma_frame_complete_still);
cam->still.wait_queue_head_t_dma_frame_complete_still = 1;
}
}
else if (cam->task.bit.capture == 1) {
/* Trigger the wake up event */
ret_val = isp_prg_sdram_addr(cam);
if(CHECK_IN_FAIL_LIMIT(ret_val))
{
}
}
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.ccdc_vd1_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.ccdc_vd2_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.ccdc_err_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.h3a_af_done_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.h3a_awb_done_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.hist_done_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.ccdc_lsc_done == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.ccdc_lsc_prefectch_completed == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.ccdc_lsc_prefectch_error == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.prv_done_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.cbuff_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.rsz_done_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.ovf_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.mmu_err_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.ocp_err_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.sec_err_irq == ENABLED)
{
}
if(cam->isp->isp_main.reg.isp_irq0status.bit.hs_vs_irq == ENABLED)
{
}
cam->isp->isp_main.reg.isp_irq0status.ISP_IRQ0STATUS = cam->isp->isp_main.reg.isp_irq0status.ISP_IRQ0STATUS;
cam->isp->isp_main.reg.isp_irq1status.ISP_IRQ1STATUS = cam->isp->isp_main.reg.isp_irq1status.ISP_IRQ1STATUS;
return IRQ_HANDLED;
}