/**
* prev_do_preview - Performs the Preview process
* @device: Structure containing ISP preview wrapper global information
* @arg: Currently not used
*
* Returns 0 if successful, or -EINVAL if the sent parameters are invalid.
**/
static int prev_negotiate_output_size(struct prev_device *prvdev,
u32 *out_hsize, u32 *out_vsize)
{
int bpp, ret, outh, outv;
if (prvdev->params->size_params.pixsize == PREV_INWIDTH_8BIT)
bpp = 1;
else
bpp = 2;
isppreview_config_datapath(PRV_RAW_MEM, PREVIEW_MEM);
ret = isppreview_try_size(prvdev->params->size_params.hsize,
prvdev->params->size_params.vsize, &outh, &outv);
if (ret) {
dev_err(prev_dev, "ERROR while try size!\n");
return -1;
}
dev_dbg(prev_dev, "%s: try size %dx%d -> %dx%d\n", __func__,
prvdev->params->size_params.hsize,
prvdev->params->size_params.vsize, outh, outv);
dev_dbg(prev_dev, "%s: out_pitch %d, output width %d, out_hsize %d\n",
__func__, prvdev->params->size_params.out_pitch,
prvdev->params->size_params.out_pitch / bpp, outh);
if (outh > (prvdev->params->size_params.out_pitch / bpp))
outh = prvdev->params->size_params.out_pitch / bpp;
*out_hsize = outh;
*out_vsize = outv;
return 0;
}
/**
* prev_do_preview - Performs the Preview process
* @device: Structure containing ISP preview wrapper global information
* @arg: Currently not used
*
* Returns 0 if successful, or -EINVAL if the sent parameters are invalid.
**/
static int prev_do_preview(struct prev_device *device, int *arg)
{
int bpp, size;
int ret = 0;
u32 out_hsize, out_vsize, out_line_offset;
dev_dbg(prev_dev, "prev_do_preview E\n");
if (!device) {
dev_err(prev_dev, "preview: invalid parameters\n");
return -EINVAL;
}
previewer_set_isp_ctrl();
if (device->params->size_params.pixsize == PREV_INWIDTH_8BIT)
bpp = 1;
else
bpp = 2;
size = device->params->size_params.hsize *
device->params->size_params.vsize * bpp;
isppreview_config_datapath(PRV_RAW_MEM, PREVIEW_MEM);
isppreview_try_size(device->params->size_params.hsize,
device->params->size_params.vsize,
&out_hsize,
&out_vsize);
ret = isppreview_config_inlineoffset(device->params->size_params.hsize
* bpp);
if (ret)
goto out;
out_line_offset = (out_hsize * bpp) & PREV_32BYTES_ALIGN_MASK;
ret = isppreview_config_outlineoffset(out_line_offset);
if (ret)
goto out;
ret = isppreview_config_size(device->params->size_params.hsize,
device->params->size_params.vsize,
out_hsize, out_vsize);
device->params->drkf_params.addr = device->isp_addr_lsc;
prev_hw_setup(device->params);
ret = isppreview_set_inaddr(device->isp_addr_read);
if (ret)
goto out;
ret = isppreview_set_outaddr(device->isp_addr_read);
if (ret)
goto out;
ret = isp_set_callback(CBK_PREV_DONE, preview_isr, (void *)device,
(void *)NULL);
if (ret) {
dev_err(prev_dev, "ERROR while setting Previewer callback!\n");
goto out;
}
isppreview_enable(1);
wait_for_completion_interruptible(&device->wfc);
ret = isp_unset_callback(CBK_PREV_DONE);
dev_dbg(prev_dev, "prev_do_preview L\n");
out:
return ret;
}