DVR RDK Grpx frame buffer question

Thomas Lo

Other Parts Discussed in Thread: THS7360, TMS320DM8168

I am using DVR RDK on dm8168, how do I modify such that the same frame buffer on GRPX0 can be shown on both the HDMI and DVO2 output? just like HDCOMP and DVO2 are showing the same frame GRPX1,

Thanks

over 13 years ago

0 Brijesh Jadav over 13 years ago

TI__Guru**** 494515 points

hi Thomas,

Tying of HDMI and DVO2 is not supported in the current RDK code. Let me come up with the list of changes required to tie them and then you could display same grpx on HDMI and DVO2 output.

Regards,

Brijesh Jadav

0 Thomas Lo over 13 years ago in reply to Brijesh Jadav

Expert 1560 points

Thanks, a list of changes required would be helpful.

0 Thomas Lo over 13 years ago in reply to Brijesh Jadav

Expert 1560 points

hi Brijesh Jadav,

Would there be many changes needed? or just a few?
Hope to see your list soon, as I am stuck here for some time already.

Thanks

Thomas

0 Brijesh Jadav over 13 years ago in reply to Thomas Lo

TI__Guru**** 494515 points

Hi,

Please find below list of changes required to support tying of HDMI and DVO2

1, Modify display controller tree in \\dvr_rdk\mcfw\src_bios6\links_m3vpss\system\system_dctrl.c like below

/* To tie DVO2 and HDCOMP together refer following Mesh */
Vps_DcConfig gSystem_dctrlTriDisplayConfigHdmiDvo2 = {
    VPS_DC_USERSETTINGS,                                   /* Use Case */
    /* Edge information */
    {
     {VPS_DC_BP0_INPUT_PATH, VPS_DC_VCOMP_MUX}     ,
     {VPS_DC_VCOMP_MUX, VPS_DC_VCOMP}     ,
     {VPS_DC_CIG_CONSTRAINED_OUTPUT, VPS_DC_HDCOMP_BLEND}     ,
     {VPS_DC_BP1_INPUT_PATH, VPS_DC_HDCOMP_MUX}     ,
     {VPS_DC_HDCOMP_MUX, VPS_DC_CIG_PIP_INPUT}     ,
     {VPS_DC_CIG_PIP_OUTPUT, VPS_DC_DVO2_BLEND}     ,
     {VPS_DC_CIG_PIP_OUTPUT, VPS_DC_HDMI_BLEND}     ,
     {VPS_DC_SEC1_INPUT_PATH, VPS_DC_SDVENC_MUX}     ,
     {VPS_DC_SDVENC_MUX, VPS_DC_SDVENC_BLEND}     ,
     {VPS_DC_GRPX0_INPUT_PATH, VPS_DC_HDMI_BLEND}     ,
     {VPS_DC_GRPX1_INPUT_PATH, VPS_DC_HDCOMP_BLEND}     ,
     {VPS_DC_GRPX0_INPUT_PATH, VPS_DC_DVO2_BLEND}
     }
    ,
    12,
    /* VENC information */
    {
     /* Mode information */
     {
      {VPS_DC_VENC_HDMI, {FVID2_STD_1080P_60}
       }
      ,                                                    /* 1080p30 is mode
                                                            * is overwritten
                                                            * later inside
                                                            * System_displayCtrlInit
                                                            */
      {VPS_DC_VENC_HDCOMP, {FVID2_STD_1080P_60}
       }
      ,                                                    /* 1080p30 is mode
                                                            * is overwritten
                                                            * later inside
                                                            * System_displayCtrlInit
                                                            */
      {VPS_DC_VENC_DVO2, {FVID2_STD_1080P_60}
       }
      ,                                                    /* 1080p30 is mode
                                                            * is overwritten
                                                            * later inside
                                                            * System_displayCtrlInit
                                                            */
      {VPS_DC_VENC_SD, {FVID2_STD_NTSC}
       }
      }
     ,
     (VPS_DC_VENC_DVO2 | VPS_DC_VENC_HDMI),              /* Tied VENC bit
                                                            * mask */
     4u                                                    /* Number of VENCs
                                                            */
     }
};

2, Modify the function System_displayCtrlInit to use this display controller tree like

    if(pPrm->tiedDevicesMask == (VPS_DC_VENC_DVO2 | VPS_DC_VENC_HDMI))
    {
        dctrlTriDisplayConfig = &(gSystem_dctrlTriDisplayConfigHdmiDvo2);
        dctrlTriDisplayConfig->vencInfo.tiedVencs = pPrm->tiedDevicesMask;
    }

3, Modify the tied venc mask in U:\dvr_rdk\demos\mcfw_api_demos\mcfw_demo\demo_vcap_venc_vdec_vdis.c file

Vdis_tiedVencInit(VDIS_DEV_DVO2, VDIS_DEV_HDMI, &vdisParams);

These are the minimal changes required to tie hdmi with DVO2, And now you should be able to see same grpx on HDMi and DVO2.

Regards,

Brijesh Jadav

0 Thomas Lo over 13 years ago in reply to Brijesh Jadav

Expert 1560 points

Hi Brijesh Jadav,

Thanks, I will try that.

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hello, Brijesh

How to tie HDMI and DVO2 using vpss driver sysfs?

I have followed the below document but it's not work.

http://processors.wiki.ti.com/index.php/DM816X_C6A816X_AM389X_VPSS_Video_Driver_User_Guide_PSP_04.00.00.11#Cloning_fb0.28graphics0.29_output_to_both_HDMI_VENC.28display0.29_and_DVO2_VENC.28display1.29

I want to display GUI(ex. QT application) frame buffer 0(/dev/fb0) on the HDMI and VGA. HDMI display seems good but VGA display fails(It's black!).

Are there something should to do?

Thanks in advance.

Steven

0 Brijesh Jadav over 13 years ago in reply to Steven Weng1

TI__Guru**** 494515 points

Hi Steven,

Can you check if you are following below steps?

1, echo 0 > /sys/devices/platform/vpss/graphics0/enabled

2, echo 0 > /sys/devices/platform/vpss/display0/enabled

3, echo 0 > /sys/devices/platform/vpss/display1/enabled

4, echo 5 > /sys/devices/platform/vpss/system/tiedvenc

5, echo 2:hdmi,dvo2 > /sys/devices/platform/vpss/graphics0/nodes

6, echo 720p-60 > /sys/devices/platform/vpss/display0/mode

7, echo 720p-60 > /sys/devices/platform/vpss/display1/mode

8, echo 1 > /sys/devices/platform/vpss/display0/enabled

9, echo 1 > /sys/devices/platform/vpss/display1/enabled

10, echo 1 > /sys/devices/platform/vpss/graphics0/enabled

Regards,

Brijesh Jadav

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hi Brijesh,

Thank for quick reply.

your steps will cause some errors, just like:

VPSS_DCTRL: stop venc before changing mode
sh: write error: Invalid argument

So I following the below steps

1. echo 0 > /sys/devices/platform/vpss/display0/enabled

2. echo 0 > /sys/devices/platform/vpss/display1/enabled

3. echo 720p-60 > /sys/devices/platform/vpss/display0/mode

4. echo 720p-60 > /sys/devices/platform/vpss/display1/mode

5. echo 5 > /sys/devices/platform/vpss/system/tiedvencs

6. echo 2:hdmi,dvo2 > /sys/devices/platform/vpss/graphics0/nodes

7. echo 1 > /sys/devices/platform/vpss/display0/enabled

8. echo 1 > /sys/devices/platform/vpss/display1/enabled

9. ./GUI_app(simple GUI application)

But the result is the same. It's no signal on VGA display.

Another question: On DVR RDK board, VGA display from dvo2 or hdcomp ?

thanks again!

Steven

0 Brijesh Jadav over 13 years ago in reply to Steven Weng1

TI__Guru**** 494515 points

Hi Steven,

Vga output is from hdcomp.

on which do you see this error? can you check the status of the VENC using below commnad? If it says 1, VENC is still on, so one of the steps 1 and 2 above is failed. It could fail if one of the input path like graphics/fbdev is still connected to the VENC. Can you try disabling fbdev?

cat /sys/devices/platform/vpss/display0/enabled

cat /sys/devices/platform/vpss/display1/enabled

Regards,

Brijesh Jadav

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hello Brijesh,

The status of the VENC is 1.

cat /sys/devices/platform/vpss/display0/enabled is 1

cat /sys/devices/platform/vpss/display1/enabled is 1

Because VGA output is from hdcomp, so I change the steps below:

1. echo 0 > /sys/devices/platform/vpss/graphics0/enabled

VPSS_GRPX : please open fb0 node first.
sh: write error: Invalid argument

At this moment, i dont execute my GUI app. So /dev/fb0 is closed.

2. echo 0 > /sys/devices/platform/vpss/display0/enabled

Disable hdmi venc.

3. echo 0 > /sys/devices/platform/vpss/display3/enabled

Disable hdcomp venc.

4. cat /sys/devices/platform/vpss/display0/enabled

cat /sys/devices/platform/vpss/display3/enabled

Both are zero.

4. echo 3 > /sys/devices/platform/vpss/system/tiedvencs

Tied hdmi with hdcomp.

5. cat /sys/devices/platform/vpss/display0/enabled

cat /sys/devices/platform/vpss/display3/enabled

Both are 1. Does "set tiedvencs" will enable venc?

5. echo 2:hdmi,hdcomp > /sys/devices/platform/vpss/graphics0/nodes

Set /dev/fb0 output.

6. ./GUI_APP

GUI_APP will open fbdev and show simple gui on the /dev/fb0

The result is the same! VGA display is no signal!

Thanks!

Steven

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hi Brijesh,

Let me clarify...

When I tied hdmi with dvo2 and execute my GUI application. VGA display has singal but it shows black.

When I tied hdmi with hdcomp and execute my GUI application. VGA display has no signal.

Why? Is VGA display from hdcomp on DVR RDK?

Thanks!

Steven

0 Brijesh Jadav over 13 years ago in reply to Steven Weng1

TI__Guru**** 494515 points

Hi Steven,

Could you please share the dump of below registers?

0x48108000

0x48140724

Regards,

Brijesh Jadav

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hi Brijesh,

Sorry for late reply.

0x48108000: 44033013

0x48140724: 00000002

Regards,

Steven

0 Brijesh Jadav over 13 years ago in reply to Steven Weng1

TI__Guru**** 494515 points

Hi Steven,

i hope you have taken this register dump when VGA does not output anything.

From the dump, venc is on and pin mux is set correctly for hte sync signals, so it should display at least back ground color, ie black color, but tv is still not detecting. there is only one possibility, there is a filter at the outpu of DAC, ths7360. DAC signals goes through this filter, if this filter is disabled, it will not output anything. Could you check if filter is configured correctly?

When you tie, HDMI + DVO2, are you seeing black output? TV is detecting input mode correctly.. Did you try this with DVR-RDK?

Regards,

Brijesh Jadav

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hi Brijesh,

Does THS7360 need be manual configured on DVRRDK? It seems configured correctly by hardware setting.

When I tied hdmi + dvo2 and execute gui application, I could see black output. But tied hdmi + hdcomp is no signal.

I have tried it with our board and DVRRDK board. The result is the same.

Dump register :

Our board :

0x48108000: 44033013

0x48140724: 00000002

DVRRDK:

0x48108000: 5403301A

0x48140724: 00000002

Thanks for your support.

Regards,

Steven

0 Brijesh Jadav over 13 years ago in reply to Steven Weng1

TI__Guru**** 494515 points

Hi Steven,

There is THS7360 driver on DVRRDK which enables the output and sets filter required for the mode. The api, which is called, Device_ths7360SetSfParams. Could you check if you are calling this api for setting ths7360 filter correctly?

There is only one difference in the register dump you shared. DVRRDK somehow is setting up the output in 1080i mode, whereas you are setting progressive mode. Except that it is same.

Regards,

Brijesh Jadav

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hi Brijesh,

As I know, THS7360 only need be configured in EVM board. THS7360 always enables the output by hardware setting(DIS_SD, DIS_SF pin has be connected to ground).

Is it wrong?

By the way, I could see the video display on VGA monitor using my demo application. I dont think it's THS7360 setting problem.

Thank for your support.

Regards,

Steven

0 Steven Weng1 over 13 years ago in reply to Steven Weng1

Expert 2200 points

Hi Sirs,

Does anyone have any clue?

Thanks!

Regards,

Steven

0 Brijesh Jadav over 13 years ago in reply to Steven Weng1

TI__Guru**** 494515 points

Hi Steven,

I am not getting your question. is it VGA output working or not? working in which application and not working in which application?

Regards,

Brijesh Jadav

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hi Brijesh,

Sorry for my english.

1. VGA output is not working on my GUI application.

This application just display simple UI on /dev/fb0. I have tied the hdmi output with hdcomp(VGA) output using vpss sysfs. But VGA output is no signal.

2. VGA output is working on DVRRDK mcfw demo application.

I have run decode-display demo, I modified /dvr_rdk/demos/mcfw_api_demos/mcfw_demo/demo_vdec_vdis.c file to tie hdmi with hdcomp.

//Vdis_tiedVencInit(VDIS_DEV_HDCOMP, VDIS_DEV_DVO2, &vdisParams);
Vdis_tiedVencInit(VDIS_DEV_HDCOMP, VDIS_DEV_HDMI, &vdisParams);

After modified, GRPX frame buffer can display on the VGA output.

At this moment, I execute my GUI application and can see the simple UI on VGA output.

My question is:

I want to display /dev/fb0 on the VGA output. I dont know how "mcfw demo api" configure the vpss driver.

I have used vpss sysfs to configure vpss but it's not work. I think there are something wrong in my vpss sysfs configure.

Any help will be appreciate.

thanks

Regards,

Steven

0 Brijesh Jadav over 13 years ago in reply to Steven Weng1

TI__Guru**** 494515 points

Hi Steven,

As i understand, your TV says no signal for the VGA output, which means either Venc is not on, or somewhere the path is blocked. Before tying, Could we first check that VGA is working fine?

After loading VPSS.ko, can you do below steps? After these steps, are you seeing any blank output on 720p mode?

echo 0 > /sys/devices/platform/vpss/display3/enabled

cat /sys/devices/platform/vpss/display3/enabled

echo vga, rgb888, 0/0/0/0 > /sys/devices/platform/vpss/display3/output

echo 720p-60 > /sys/devices/platform/vpss/display3/mode

echo 1 > /sys/devices/platform/vpss/display3/enabled

Rgds,

Brijesh Jadav

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hi Brijesh,

I follow the steps:

echo vga, rgb888, 0/0/0/0 > /sys/devices/platform/vpss/display3/output

result :

VPSS_DCTRL: invalid output value vga
sh: write error: Invalid argument

cat /sys/devices/platform/vpss/display3/output

result :

component,rgb888

Regards,

Steven

0 Brijesh Jadav over 13 years ago in reply to Steven Weng1

TI__Guru**** 494515 points

ok, can you try

echo component, rgb888, 0/0/0/0 > /sys/devices/platform/vpss/display3/output

Regards,

Brijesh

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hi Brijesh,

Thanks for quick reply.

#echo component,rgb888,0/0/0/0 > /sys/devices/platform/vpss/display3/output

#cat /sys/devices/platform/vpss/display3/ouput

component,rgb888

After the above setting, VGA output still no signal.

I see another thread, http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/134363.aspx?pi239031349=2

It seems the same problem i met.

My DM8168 SOC is old version(ES1.0 or ES1.1) and my PSP is 04.04.0.1.

Does it cause this problem?

Thanks

Best regards,

Steven

0 Brijesh Jadav over 13 years ago in reply to Steven Weng1

TI__Guru**** 494515 points

Hi Steven,

VGA output is not possible on ES1.1 or ES1.0, You will need ES2.0 or later to get the VGA output.

Regards,

Brijesh Jadav

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hi Brijesh,

I am very sorry.

I check SOC chip again. It seems revision is ES2.0. (TMS320DM8168BCYG2)

PSP is 04.04.0.1

sorry again!

regards,

Steven

0 Brijesh Jadav over 13 years ago in reply to Steven Weng1

TI__Guru**** 494515 points

Hi Steven,

Is it possible to migrate to latest PSP release?

Regards,

Brijesh Jadav

0 Steven Weng1 over 13 years ago in reply to Brijesh Jadav

Expert 2200 points

Hi Brijesh,

After updating vpss driver(vpss.ko) from PSP 04.04.00.02. I could see my gui application display on VGA and HDMI now!!!

My steps is below:

1. Update /linux-04.04.00.01/drivers/video/ti81xx/vpss folder from linux-04.04.00.02 except grpx.c (if i update grpx.c, ti81xxfb.ko will insmod fail...it will show "no grpxs")

2. After boot up, VGA output could detect signal, but the display is green, NOT black. And display is shift(there is a black bar on the left of green screen.)

3. # cat /sys/devices/platform/vpss/display3/output

component,yuv422spuv

     # echo 0 > /sys/devices/platform/vpss/display3/enabled
     # echo component,rgb888,0/0/0/0 > /sys/devices/platform/vpss/display3/output
     # echo 1 > /sys/devices/platform/vpss/display3/enabled

VGA output is black now!

4. # echo 0 > /sys/devices/platform/vpss/display0/enabled
    # echo 0 > /sys/devices/platform/vpss/display3/enabled
    # echo 3 > /sys/devices/platform/vpss/system/tiedvencs
    # echo 2:hdmi,hdcomp > /sys/devices/platform/vpss/graphics0/nodes

# ./gui_app

I could see my gui display on VGA and HDMI output!!! But on VGA output, the UI is shift(black bar at the left of screen) and output is flicker. Are there something wrong?

Thanks for your patience!!

Regards,

Steven

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