Re: How to get SDA/SCL bit position in the control word register of the video card?

Antonino A. Daplas
2005-11-26T11:35:17Z

Jean Delvare wrote:
> Hi Vishal,
>
>>>>> I tried to use linux kernel API char* get_EDID_from_BIOS(void*) and
>>>> then using kgdb to debug the kernel module (that i wrote) to get the
>>>> same but failed to find the way to get the above.
>>> I couldn't find any function by that name in the Linux kernel source
>>> tree. What are you talking about?
>> /usr/src/linux-2.6.x/include/video/edid.h
>
> There is no function by that name in that file, neither in Linus'
> latest kernel, nor in Andrew Morton's one. Whatever you are talking
> about does not seem to exist.
>

That's the old name. It's now renamed to fb_firmware_edid() which is in
drivers/video/fbmon.c. But you won't get anything from this function.
The DDC transfer was done entirely by the Video BIOS using a VBE interrupt
call during boot in arch/i386/boot/video.S:store_edid.

Tony