Hello All,
Currently I am working on the Video decoder driver for Davinci DMS 355.
The driver is being implemented using the Montavista TI Linux code. We
are using tvp5150 with 8-bit BT 656 embedded sync output. We have
programmed the TVp5150 output as 8-bit embedded sync. We are getting the
digital data, Y0 to Y7 and the pixel clock output from the TVp5150. It
is feeding to the Dm355 as input. In order to implement this driver, we
are using the TI TVP5146 and VPFE driver code as the base.
For the VPFE side in the DM355, we are using the davinci_vpfe.c,
davinci_vpfe.h, ccdc_dm355.c and ccdc_dm355.h files. We have not changed
anything in the ccdc_dm355.c and .h. All the settings in the current
code are same. Also, I have gone through the VPFE data sheet and
identified the same settings in ccdc_dm355.c can be used as such. I did
not find anything new for 8 bit BT 656 embedded sync. The current
ccdc_dm355.c has been programmed for 8-bit YCbCr with separate sync.
We have used printk in all the driver functions and the tvp5150 related
changes in the code is getting called properly. We have registered the
VDINT0 interrupt in the vpfe code. But, the vpfe_isr is not getting
called. It is registering properly and not getting failed.
We don't know the reason for this. Is there any other setting required
in the VPFE side for 8-bit BT 656 embedded sync other than mentioned in
the hardware programming details of the VPFE CCDC part?
If someone who worked on the tvp5150 and faced the same issue, please
provide your valuable comments.
Thanks a lot in advance.
Regards,
Prabhaharan.R
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