i.MX Processors中的主题 Re: mxc_v4l2_capture: How to set "standard id"?

mxc_v4l2_capture: How to set "standard id"?

kruglikov_dmt — Thu, 28 Nov 2019 13:50:08 GMT

Hello. I've modified ov5640.c and tried to use it with my camera (FPGA as a source of video stream).

I faced the trouble, when I tried to capture image from camera through gstreamer:

gst-launch-1.0 imxv4l2videosrc num-buffers=1 ! jpegenc ! filesink location=/cap1.jpeg

I had got error:

ERROR: unrecognized std! 0 (PAL=ff, NTSC=b000)

There is a part of code from mxc_v4l2_capture.c:

static int mxc_v4l2_s_std(cam_data *cam, v4l2_std_id e)
{
   pr_debug("In mxc_v4l2_s_std %Lx\n", e);
   if (e == V4L2_STD_PAL) {
       pr_debug("   Setting standard to PAL %Lx\n", V4L2_STD_PAL);
       cam->standard.id = V4L2_STD_PAL;
       video_index = TV_PAL;
   } else if (e == V4L2_STD_NTSC) {
       pr_debug("   Setting standard to NTSC %Lx\n",
               V4L2_STD_NTSC);
       /* Get rid of the white dot line in NTSC signal input */
       cam->standard.id = V4L2_STD_NTSC;
       video_index = TV_NTSC;
   } else {
       cam->standard.id = V4L2_STD_ALL;
       video_index = TV_NOT_LOCKED;
       pr_err("ERROR: unrecognized std! %Lx (PAL=%Lx, NTSC=%Lx\n",
           e, V4L2_STD_PAL, V4L2_STD_NTSC);
   }
...
...
...

Messages log:

root@var-som-mx6:~# dmesg | grep ov5640

[   11.094087] [ov5640] > ov5640_probe
[   11.137421] [ov5640] > Camera ov5640 is found, v4l2_reg resp is 0
[   11.843813] [ov5640] > ioctl_dev_exit
[   11.846878] [ov5640] > ioctl_s_power
[   11.849846] [ov5640] > ioctl_g_fmt_cap
[   12.703436] [ov5640] > ioctl_g_ifparm
[   12.706504] [ov5640] > clock_curr=mclk=24000000
[   12.752054] [ov5640] > ioctl_g_fmt_cap
[   12.757388] [ov5640] > ioctl_s_power
[   12.770093] [ov5640] > ioctl_init
[   12.772810] [ov5640] > ioctl_dev_init
[   12.775866] [ov5640] > setting mclk to 24 MHz
[   12.783086] [ov5640] > ioctl_s_power
[   41.674770] [ov5640] > ioctl_g_ifparm
[   41.677840] [ov5640] > clock_curr=mclk=24000000
[   41.682819] [ov5640] > ioctl_g_fmt_cap
[   41.685979] [ov5640] > ioctl_s_power
[   41.688949] [ov5640] > ioctl_init
[   41.692781] [ov5640] > ioctl_dev_init
[   41.695843] [ov5640] > setting mclk to 24 MHz
[   41.701290] [ov5640] > ioctl_s_power
root@var-som-mx6:~# v4l2-ctl --list-devices

[ov5640] > ioctl_g_ifparm
[ov5640] > clock_curr=mclk=24000000
[ov5640] > ioctl_g_fmt_cap
[ov5640] > ioctl_s_power
[ov5640] > ioctl_init
[ov5640] > ioctl_dev_init
[ov5640] > setting mclk to 24 MHz
[ov5640] > ioctl_s_power
():[ov5640] > ioctl_g_ifparm
   /dev/video0
   /dev/video16
   /[ov5640] > clock_curr=mclk=24000000
dev/video17
[ov5640] > ioctl_g_fmt_cap
[ov5640] > ioctl_s_power
[ov5640] > ioctl_init
[ov5640] > ioctl_dev_init
[ov5640] > setting mclk to 24 MHz
[ov5640] > ioctl_s_power
root@var-som-mx6:~# gst-launch-1.0 imxv4l2videosrc num-buffers=1 ! jpegenc ! filesink location=/cap1.jpeg
esink location=/cap1.jpeg
(gst-plugin-scanner:739): GStreamer- [1;33mWARNING [0m **: Failed to load plugin '/usr/lib/arm-linux-gnueabihf/gstreamer-1.0/libgstimxaudio.so': lib_mp3_enc_arm12_elinux.so.2: cannot open shared object file: No such file or directory
[ov5640] > ioctl_g_ifparm
[ov5640] > clock_curr=mclk=24000000
[ov5640] > ioctl_g_fmt_cap
[ov5640] > ioctl_s_power
[ov5640] > ioctl_init
[ov5640] > ioctl_dev_init
[ov5640] > setting mclk to 24 MHz
[ov5640] > ioctl_s_power
Setting pipeline to PAUSED ...[ov5640] > ioctl_g_ifparm
[ov5640] > clock_curr=mclk=24000000
[ov5640] > ioctl_g_fmt_cap
[ov5640] > ioctl_s_power
[ov5640] > ioctl_init
[ov5640] > ioctl_dev_init
[ov5640] > setting mclk to 24 MHz
ERROR: unrecognized std! 0 (PAL=ff, NTSC=b000
[ov5640] > ioctl_enum_framesizes
[ov5640] > ioctl_g_parm
[ov5640] > ioctl_s_parm
[ov5640] > ioctl_g_ifparm
[ov5640] > clock_curr=mclk=24000000
[ov5640] > ioctl_g_fmt_cap
[ov5640] > ioctl_s_ctrl
[ov5640] > ioctl_s_ctrl
[ov5640] > ioctl_g_ctrl
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
alloc_contig_range: [44800, 448c6) PFNs busy
alloc_contig_range: [44800, 448c6) PFNs busy
alloc_contig_range: [44800, 448c6) PFNs busy
alloc_contig_range: [44800, 448c6) PFNs busy
alloc_contig_range: [44800, 448c6) PFNs busy
ERROR: v4l2 capture: mxc_v4l_dqueue timeout enc_counter 0
ERROR: from element /GstPipeline:pipeline0/GstImxV4l2VideoSrc:imxv4l2videosrc0: Internal data stream error.
Additional debug info:
gstbasesrc.c(2950): gst_base_src_loop (): /GstPipeline:pipeline0/GstImxV4l2VideoSrc:imxv4l2videosrc0:
streaming stopped, reason error (-5)
Execution ended after 0:00:10.754667335
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
[ov5640] > ioctl_s_ctrl
[ov5640] > ioctl_s_ctrl
[ov5640] > ioctl_g_ctrl
[ov5640] > ioctl_s_power
Setting pipeline to NULL ...
Freeing pipeline ...
root@var-som-mx6:~# du -k /cap1.jpeg

0   /cap1.jpeg

ov5640.c uses structure sensor_data (defined in mxc_v4l2_capture.h) that haven't field "standard id".

So, how I should to define that parameter and pass it from ov5640 to mxc_v4l2 and avoid that exception?

Thanks!

Re: mxc_v4l2_capture: How to set "standard id"?

igorpadykov — Thu, 28 Nov 2019 23:18:03 GMT

Hi Eugene

what processor used in the case, if i.MX6Q with IPU one can look at

VAR-SOM-MX6 Camera FSLC - Variscite Wiki

Example without IPU (like i.MX6SX,UL) on

https://community.nxp.com/docs/DOC-330092

Best regards
igor
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Re: mxc_v4l2_capture: How to set "standard id"?

kruglikov_dmt — Fri, 29 Nov 2019 05:32:12 GMT

Hi, Igor.

Thank you for your reply.

Yeah, I read manuals from variscite,

http://variwiki.com/index.php?title=IMX6UL_CSI

http://variwiki.com/index.php?title=VAR-SOM-MX6_Camera_FSLC

and some chapters in i.MX_6Dual6Quad_BSP_Porting_Guide

But my question not about "Devices Tree" but about OV5640 and MXC_V4L drviers, I think.

I just tried to open your second link (How to enable i.MX6UL CSI port support BT.656 deinterlace mode and PXP preview );

however, I've got error

Unauthorized
This place or content does not exist or access to it is restricted. If you think this is a mistake, please contact your administrator or the person who directed you here.

How I can read content of that post?

Re: mxc_v4l2_capture: How to set "standard id"?

kruglikov_dmt — Fri, 29 Nov 2019 05:33:29 GMT

*Note: I'm using imx6-solo

Re: mxc_v4l2_capture: How to set "standard id"?

igorpadykov — Fri, 29 Nov 2019 07:14:07 GMT

for i.MX6S suggest to recheck

VAR-SOM-MX6 Camera FSLC - Variscite Wiki

https://community.nxp.com/thread/441143

Best regards
igor

Re: mxc_v4l2_capture: How to set "standard id"?

kruglikov_dmt — Mon, 02 Dec 2019 15:23:14 GMT

sure, below is difference between original and modified files.

imx6qdl-var-som.dtsi

158c158
<    /*v4l2_cap_0 {
---
>    v4l2_cap_0 {
164,171d163
<    };*/
<
<    v4l2_cap_1 {
<        compatible = "fsl,imx6q-v4l2-capture";
<        ipu_id = <0>;
<        csi_id = <0>;
<        mclk_source = <0>;
<        status = "okay";
425,436d416
<
<    ov564x: ov564x@3c {
<         compatible = "ovti,ov564x";
<         reg = <0x3c>;
<         pinctrl-names = "default";
<         pinctrl-0 = <&pinctrl_ipu1_2>;
<         clocks = <&clks 200>;
<         clock-names = "csi_mclk";
<         csi_id = <0>;
<         mclk = <216000000>;
<         mclk_source=<0>;
<     };

I didn't change pins (in accordination with manual and datasheet they are valid by default):

pinctrl_ipu1_2: ipu1grp-2 { /* parallel camera */
    fsl,pins = <
        MX6QDL_PAD_CSI0_DAT12__IPU1_CSI0_DATA12        0x80000000
        MX6QDL_PAD_CSI0_DAT13__IPU1_CSI0_DATA13        0x80000000
        MX6QDL_PAD_CSI0_DAT14__IPU1_CSI0_DATA14        0x80000000
        MX6QDL_PAD_CSI0_DAT15__IPU1_CSI0_DATA15        0x80000000
        MX6QDL_PAD_CSI0_DAT16__IPU1_CSI0_DATA16        0x80000000
        MX6QDL_PAD_CSI0_DAT17__IPU1_CSI0_DATA17        0x80000000
        MX6QDL_PAD_CSI0_DAT18__IPU1_CSI0_DATA18        0x80000000
        MX6QDL_PAD_CSI0_DAT19__IPU1_CSI0_DATA19        0x80000000
        MX6QDL_PAD_CSI0_DATA_EN__IPU1_CSI0_DATA_EN     0x80000000
        MX6QDL_PAD_CSI0_PIXCLK__IPU1_CSI0_PIXCLK       0x80000000
        MX6QDL_PAD_CSI0_MCLK__IPU1_CSI0_HSYNC          0x80000000
        MX6QDL_PAD_CSI0_VSYNC__IPU1_CSI0_VSYNC         0x80000000
    >;
};

mach-imx6q.c

>    struct regmap *gpr;
253,268c248,261
<     gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
<     if (!IS_ERR(gpr)) {
<         if (of_machine_is_compatible("fsl,imx6q-var-dart"))
<             regmap_update_bits(gpr, IOMUXC_GPR1, 1 << 20, 1 << 20);
<         else if (of_machine_is_compatible("fsl,imx6q-sabresd") ||
<                 of_machine_is_compatible("fsl,imx6q-sabreauto") ||
<                 of_machine_is_compatible("fsl,imx6q-var-som"))
<             regmap_update_bits(gpr, IOMUXC_GPR1, 1 << 19, 1 << 19);
<         else if (of_machine_is_compatible("fsl,imx6dl-sabresd") ||
<                 of_machine_is_compatible("fsl,imx6dl-sabreauto") ||
<                 of_machine_is_compatible("fsl,imx6dl-var-som"))
<             regmap_update_bits(gpr, IOMUXC_GPR13, 0x3F, 0x0C);
<     }
<     else {
<         pr_err("%s(): failed to find fsl,imx6q-iomux-gpr regmap\n", __func__);
<     }
---
>    gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
>    if (!IS_ERR(gpr)) {
>        if (of_machine_is_compatible("fsl,imx6q-sabresd") ||
>            of_machine_is_compatible("fsl,imx6q-sabreauto") ||
>            of_machine_is_compatible("fsl,imx6qp-sabresd") ||
>            of_machine_is_compatible("fsl,imx6qp-sabreauto"))
>            regmap_update_bits(gpr, IOMUXC_GPR1, 1 << 19, 1 << 19);
>        else if (of_machine_is_compatible("fsl,imx6dl-sabresd") ||
>            of_machine_is_compatible("fsl,imx6dl-sabreauto"))
>            regmap_update_bits(gpr, IOMUXC_GPR13, 0x3F, 0x0C);
>    } else {
>        pr_err("%s(): failed to find fsl,imx6q-iomux-gpr regmap\n",
>                __func__);
>    }

Re: mxc_v4l2_capture: How to set "standard id"?

kruglikov_dmt — Tue, 03 Dec 2019 11:52:52 GMT

Well, my camera isn't accept clock and haven't H/V-syncs.
So there is connected only pins ATA12-DATA19 and PIX_CLK.

If I all understand right, configuration should be something like a:

&i2c3 {
   clock-frequency = <100000>;
   pinctrl-names = "default";
   pinctrl-0 = <&pinctrl_i2c3_3>;
   status = "okay";
    ...
   ov564x: ov564x@3c {
        compatible = "ovti,ov564x";
        reg = <0x3c>;
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_ipu1_2>;
    };
};

        pinctrl_ipu1_2: ipu1grp-2 { // parallel camera
           fsl,pins = <
               MX6QDL_PAD_CSI0_DAT12__IPU1_CSI0_DATA12       0x80000000 // use default value
               MX6QDL_PAD_CSI0_DAT13__IPU1_CSI0_DATA13       0x80000000 // use default value
               MX6QDL_PAD_CSI0_DAT14__IPU1_CSI0_DATA14       0x80000000 // use default value
               MX6QDL_PAD_CSI0_DAT15__IPU1_CSI0_DATA15       0x80000000 // use default value
               MX6QDL_PAD_CSI0_DAT16__IPU1_CSI0_DATA16       0x80000000 // use default value
               MX6QDL_PAD_CSI0_DAT17__IPU1_CSI0_DATA17       0x80000000 // use default value
               MX6QDL_PAD_CSI0_DAT18__IPU1_CSI0_DATA18       0x80000000 // use default value
               MX6QDL_PAD_CSI0_DAT19__IPU1_CSI0_DATA19       0x80000000 // use default value
               MX6QDL_PAD_CSI0_PIXCLK__IPU1_CSI0_PIXCLK      0x80000000 // use default value
#define PAD_CTRL_HYS_PD 0x130b0
               MX6QDL_PAD_CSI0_DATA_EN__IPU1_CSI0_DATA_EN    PAD_CTRL_HYS_PD // not used
                MX6QDL_PAD_CSI0_MCLK__IPU1_CSI0_HSYNC              PAD_CTRL_HYS_PD // not used
                MX6QDL_PAD_CSI0_VSYNC__IPU1_CSI0_VSYNC           PAD_CTRL_HYS_PD // not used
           >;
       };

Itried to remove unused PINs (MX6QDL_PAD_CSI0_DATA_EN__IPU1_CSI0_DATA_EN, MX6QDL_PAD_CSI0_MCLK__IPU1_CSI0_HSYNC, MX6QDL_PAD_CSI0_VSYNC__IPU1_CSI0_VSYNC). But I've the same result:

ERROR: unrecognized std! 0 (PAL=ff, NTSC=b000)
...
ERROR: v4l2 capture: mxc_v4l_dqueue timeout enc_counter 0

Are there any mistakes, from your viewpoint?

(clock checkings/settings were removed from ov5640.c)

Thanks!

Re: mxc_v4l2_capture: How to set "standard id"?

kruglikov_dmt — Wed, 04 Dec 2019 07:03:14 GMT

Ok. Configuration was right. The problem was with mxc_v4l2_capture, I've hardcoded some parameters and problems were gone.