Re: [ RFC PATCH 0/8] RFC for Media Controller capture driver for DM365

[Sakari Ailus <sakari.ailus@iki.fi>]

Hi Manjunath,

Thanks for the patches.

On Thu, Jun 30, 2011 at 06:43:09PM +0530, Manjunath Hadli wrote:
> Thease are the RFC patches for the DM365 video capture, of which 
> the current set includes only CCDC and the VPFE framework. Once
> the present set is reviewed, I will send out the other parts
> like H3A, sensor additions etc.
> 
> Introduction
> ------------
> This is the proposal of the initial version of design and implementation  of
> the Davinci family (dm644x,dm355,dm365)VPFE (Video Port Front End) drivers
> using Media Controloler , the initial version which supports
> the following:
> 1) dm365 vpfe
> 2) ccdc,previewer,resizer,h3a,af blocks
> 3) supports both continuous and single-shot modes
> 4) supports user pointer exchange and memory mapped modes for buffer allocation
> 
> This driver bases its design on Laurent Pinchart's Media Controller Design
> whose patches for Media Controller and subdev enhancements form the base.
> The driver also takes copious elements taken from Laurent Pinchart and
> others' OMAP ISP driver based on Media Controller. So thank you all the
> people who are responsible for the Media Controller and the OMAP ISP driver.

This may be a stupid question, but how much changes are there between this
driver and the OMAP 3 ISP driver?

I understand that not all the blocks are there. Are there any major
functional differences between those in Davinci and those in OMAP 3? Could
the OMAP 3 ISP driver made support Davinci ISP as well?

There are number of possible improvements that still should be made to the
OMAP 3 ISP driver so this way both of the driver would easily get them. To
mention some:

- Multiple output pipeline
- Switch to videobuf2
- Switch to GENIRQ

Cc Laurent.

Regards,

-- 
Sakari Ailus
sakari.ailus@iki.fi