Re: linux camera drivers

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On Sat, Mar 3, 2012 at 9:51 AM, Mayank Agarwal <mayank77fromindia@xxxxxxxxx> wrote:

On Fri, Mar 2, 2012 at 10:08 AM, Mayank Agarwal <mayank77fromindia@xxxxxxxxx> wrote:
1.I think the device supports i2c or spi protocol.I want to know how the i2c or spi is taking data
 from image sensor and giving it to video buffers.
Most of the cameras support i2c or csi.
2.I want to understand the whole data flow from image sensor to the display buffer and the role of linux kernel
camera drivers in that.
For this you need to understand the V4L2 Framework, Or later Media Controller Framework.
3.Currently i am looking at Sony IMX036,Aptima MT9P031. 
          You can find in directory <source>/drivers/media/video/
           MT9p031 support is there in current kernel but no idea about imx036.

---Prabhakar Lad
Mob: +91-9611756433

Thanks and Regards,

On Thu, Mar 1, 2012 at 8:22 PM, Greg KH <greg@xxxxxxxxx> wrote:
On Thu, Mar 01, 2012 at 05:57:52PM +0530, Mayank Agarwal wrote:
> Hi all,
> I have following questions regarding camera drivers in  linux kernel.
> 1.which are the files/folder in kernel directory where camera drivers support
> is provided in linux kernel.

It depends, which type of protocol does your device support?

> 2.Are they customisable according to different SOC requirements.

It depends on what the requirements are.  As it's software, it's always
able to be changed :)

> 3.Are there any tutorials/pdfs to understand camera drivers in linux kernel.

What is wrong with the code itself?

> 4.At present which sensor (i mean aptina/sony/omnivision) drivers are supported
> in linux kernel.

What sensor are you looking for exactly?

What device do you need to support, and what protocol does your camera
use to talk to the hardware?

greg k-h

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