About porting tvp514x device driver....

Seung Youl Lee88055

Other Parts Discussed in Thread: TVP7002, TVP5147

Hello,

I have ported TVP514x device driver according to TVP7002 porting guide(http://processors.wiki.ti.com/index.php/DM81xx_AM38xx_Adding_External_Decoders_to_V4L2_Capture_Driver)....

My EZSDK version is ti-ezsdk_dm816x-evm_5_03_01_15....

I have modified the following files...

- arch/arm/mach-omap2/ti81xx_fb.c

- drivers/media/video/ti81xx/*.c

- /drivers/video/ti81xx/vpss/*.c

Are there any other files to modify?

Porting result is not good. Capturing is OK, but the file contents are the same....no picture...

The following is the VPSS status information...

Capture capture detected(0)
Output Width detected(0): 60
Output height detected(0): 124
Dropped frame count(0): 0
Caputred frame count(0): 0

According to the above message, capturing is not done...

How to interpret the above message?

over 11 years ago

0 HardikShah over 11 years ago

TI__Mastermind 20245 points

Hi,

Is this on TI EVM or other EVM.

Regards,

Hardik Shah

0 Seung Youl Lee88055 over 11 years ago in reply to HardikShah

Prodigy 170 points

Hi Hardish,

Custom board..Both VIN0[7:0] and VIN0[15:8] are connected to Y[9:2] from TVP514x.....

0 Seung Youl Lee88055 over 11 years ago in reply to Seung Youl Lee88055

Prodigy 170 points

Hi Hardisk,

I have solved my problem...It's HW problem which TVP5147 input is not connected....

Thank you....

0 HardikShah over 11 years ago in reply to Seung Youl Lee88055

TI__Mastermind 20245 points

Good to hear that,

What was the problem?

Regards,

Hardik Shah

0 David Soto - RidgeRun over 10 years ago in reply to HardikShah

Genius 3700 points

Hi Seung Youl Lee,

I'm trying to get the tvp514x working as well, I was able to register the driver properly in the kernel and I already verified that the chip is working reading its registers by i2c. However when I try to capture frames I just get green frames which I think means that I am not configuring the VPSS properly to capture through the tvp514x nor V4L2, coudl you provide some suggestion about which parameters you used to get it working in your side?

thanks in advance,

David

0 David Soto - RidgeRun over 10 years ago in reply to David Soto - RidgeRun

Genius 3700 points

Hi,

In the DM8168-EVM we got the TVP5147 working with V4L2, you can find more info here:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/326172/1170437.aspx#1170437

-David

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About porting tvp514x device driver....