/* config camif when master-open camera.*/
static void init_camif_config(struct s3c2440camif_fh * fh)
{
struct s3c2440camif_dev * pdev;
pdev = fh->dev;
pdev->input = 0; // FIXME, the default input image format, see inputs[] for detail.
/* the source image size (input from external camera). */
pdev->srcHsize = 1280; // FIXME, the OV9650's horizontal output pixels.
pdev->srcVsize = 1024; // FIXME, the OV9650's verical output pixels.
/* the windowed image size. */
pdev->wndHsize = 1280;
pdev->wndVsize = 1024;
/* codec-path target(output) image size. */
pdev->coTargetHsize = pdev->wndHsize;
pdev->coTargetVsize = pdev->wndVsize;
/* preview-path target(preview) image size. */
pdev->preTargetHsize = 640;
pdev->preTargetVsize = 512;
update_camif_config(fh, CAMIF_CMD_STOP);
}
/*
* camif_open()
*/
static int camif_open(struct inode *inode, struct file *file)
{
struct s3c2440camif_dev *pdev;
struct s3c2440camif_fh *fh;
int ret;
if (!has_ov9650) {
return -ENODEV;
}
pdev = &camera;
fh = kzalloc(sizeof(*fh),GFP_KERNEL); // alloc memory for filehandle
if (NULL == fh)
{
return -ENOMEM;
}
fh->dev = pdev;
pdev->state = CAMIF_STATE_READY;
init_camif_config(fh);
ret = init_image_buffer(); // init image buffer.
if (ret < 0)
{
goto error1;
}
request_irq(IRQ_S3C2440_CAM_C, on_camif_irq_c, IRQF_DISABLED, "CAM_C", pdev); // setup ISRs
if (ret < 0)
{
goto error2;
}
request_irq(IRQ_S3C2440_CAM_P, on_camif_irq_p, IRQF_DISABLED, "CAM_P", pdev);
if (ret < 0)
{
goto error3;
}
clk_enable(pdev->clk); // and enable camif clock.
soft_reset_camif();
file->private_data = fh;
fh->dev = pdev;
update_camif_config(fh, 0);
return 0;
error3:
free_irq(IRQ_S3C2440_CAM_C, pdev);
error2:
free_image_buffer();
error1:
kfree(fh);
return ret;
}
/* config camif when master-open camera.*/
static void init_camif_config(s3c2440camif_dev * pdev)
{
update_camif_config(pdev, CAMIF_CMD_STOP);
}
