cannot do V4L2 video capture after applying patches

Greetings,

I have a custom board with a ITE HDMI receiver. My sdk is latest one v5.03.01

I am trying to the video capture with v4l2 drivers.

What I have did is:

(1) Applying sub_devices_calls_removed.patch and make_select_decoder.patch

(2) comment following codes in ti81xxin_main.c

/*
    for (i = 0; i < 1; i++) {
        subdevdata = &config->subdev_info[i];
        ti81xxvin_obj.sd[i] =
            v4l2_i2c_new_subdev_board(&ti81xxvin_obj.v4l2_dev,
                          i2c_adap,
                          &subdevdata->board_info,
                          NULL, 0);

        //if (!ti81xxvin_obj.sd[i]) {
        
            //ti81xxvin_err("Error registering test v4l2 subdevice\n");
            //goto probe_subdev_out;
    //    }
        
        if (subdevdata->ti81xxvin_select_decoder)
            err = subdevdata->ti81xxvin_select_decoder(
                subdevdata->decoder_id);
        if (err < 0) {
            ti81xxvin_err("Error selecting decoder\n");
            goto probe_subdev_out;
        }
        if (subdevdata->ti81xxvin_set_mode)
            err = subdevdata->ti81xxvin_set_mode(
                    FVID2_STD_1080P_60);
        if (err < 0) {
            ti81xxvin_err("Error setting mode on decoder\n");
            goto probe_subdev_out;
        }

        v4l2_info(&ti81xxvin_obj.v4l2_dev, "registered sub device %s\n",
              subdevdata->name);

        if (ti81xxvin_obj.sd[i])
            ti81xxvin_obj.sd[i]->grp_id = 1 << i;
    }

*/

(3) change the bus width of original codes the bus width. (ti81xxin_main.c)

I changed as following:

    mbus_framefmt.width = 1920;
    mbus_framefmt.height = 1080;
    mbus_framefmt.code = V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE;//V4L2_MBUS_FMT_YUYV8_2X8;
    mbus_framefmt.field = V4L2_FIELD_NONE;
    mbus_framefmt.colorspace = V4L2_COLORSPACE_REC709;

(4) change the ti81xx_fb.c to let the chip working the discrete sync;

static struct ti81xxvin_subdev_info hdvpss_capture_sdev_info[] = {
    {
        .name    = TVP7002_INST0,
        .board_info = {
            /* TODO Find the correct address
                of the TVP7002 connected */
            I2C_BOARD_INFO("tvp7002", 0x5d),
            .platform_data = &tvp7002_pdata,
        },
        
        
        .vip_port_cfg = {
            .ctrlChanSel = VPS_VIP_CTRL_CHAN_DONT_CARE, //VPS_VIP_CTRL_CHAN_SEL_15_8,
    //        .ctrlChanSel = VPS_VIP_CTRL_CHAN_SEL_15_8,
            .ancChSel8b = VPS_VIP_ANC_CH_SEL_DONT_CARE,
            .pixClkEdgePol = VPS_VIP_PIX_CLK_EDGE_POL_RISING,
            .invertFidPol = 0,
            .embConfig = {
                .errCorrEnable = 1,
                .srcNumPos = VPS_VIP_SRC_NUM_POS_DONT_CARE,
                .isMaxChan3Bits = 0,
            },
            .disConfig = {
                .fidSkewPostCnt = 0,
                .fidSkewPreCnt = 0,
                .lineCaptureStyle =VPS_VIP_LINE_CAPTURE_STYLE_ACTVID,
//                .lineCaptureStyle =
//                    VPS_VIP_LINE_CAPTURE_STYLE_ACTVID,//VPS_VIP_LINE_CAPTURE_STYLE_HSYNC, //VPS_VIP_LINE_CAPTURE_STYLE_DONT_CARE,
                .fidDetectMode =VPS_VIP_FID_DETECT_MODE_DONT_CARE,
                    //VPS_VIP_FID_DETECT_MODE_PIN,//VPS_VIP_FID_DETECT_MODE_DONT_CARE,
                .actvidPol = VPS_VIP_POLARITY_HIGH , //VPS_VIP_POLARITY_DONT_CARE,
                .vsyncPol =  VPS_VIP_POLARITY_HIGH, //VPS_VIP_POLARITY_DONT_CARE,
                .hsyncPol = VPS_VIP_POLARITY_HIGH, //VPS_VIP_POLARITY_DONT_CARE,
            }
        },
        .video_capture_mode =
        //VPS_CAPT_VIDEO_CAPTURE_MODE_SINGLE_CH_NON_MUX_EMBEDDED_SYNC,
        VPS_CAPT_VIDEO_CAPTURE_MODE_SINGLE_CH_NON_MUX_DISCRETE_SYNC_HSYNC_VSYNC,

        .video_if_mode = VPS_CAPT_VIDEO_IF_MODE_24BIT,
        .input_data_format = FVID2_DF_RGB24_888,
    },

(3) load v4l2 firmwares and make new modules like vpss.ko ti81xxvin.ko and ti81xxfb.ko

===============================================

Then I tried some examples /sa-examples/video/ and the only one I can let it work is saLoopBackFbdev.

I tested my hdmi rx, everything is fine and I can detect the sync and de sginals. I feed the board with 1080P source and H+V+

Problems: (1)  capt.dv_preset.preset cannot detect the source, the return value is always 0.

                   (2) saLoopBackFbdev can always capture one frame for me. However, when I replayed it, the image is 1080i and color space is BGR instead of RGB

                   (3) Gstreamer v4l2 capture does not work.

What I am missing?

Regards,

Jun