Quoting Luc Verhaegen <[EMAIL PROTECTED]>: > On Tue, Mar 13, 2007 at 04:50:47AM +0100, Quux wrote: >> hey Joe, >> >> I'd guess, during testing, the sequence would make not much difference. >> Once the code is working, the earlier it gets called, the more you could >> output onto TV which would be desirable. maybe use it as debug output >> device. greetinx: --Q >> >> [EMAIL PROTECTED] schrieb: >> > Hello, >> > I have a question. I see in the sources there are drivers for i2c >> > devices. What I am thinking is to write a driver to program and >> > initialize the tv-out chip through the i2c (smbus). The tv-out chip is >> > embedded in the board and programable through i2c. If this is possible >> > I would need to know at what point the video bios gets initialized. >> > And I would want to load this driver right after video bios gets >> > initialized correct? Thoughts? > > TV encoders are not standalone devices. They get pixel data from your > graphics device, and they either provide or receive sync signals, > blanking and clocking either to or from the graphics device. It doesn't > matter if these devices are programmed over smbus or over graphics > device local I2C/GPIO lines. > > So this is an integral part part of graphics device initialisation. > As such, it is all up to the VGA BIOS, or, if available, up to the > direct support of certain graphics devices. > > Luc Verhaegen. > http://unichrome.sf.net/ >
I understand video encoders are not standalone. They receive input from your GPU, in my case it is embedded so the northbridge, encode it, and send it out the output. I have a vga bios that outputs to DVOA. This is the the port that is connected to the input of the video encoder. Unfortunatly (intel) never released a module for this video encoder. So, this is what I want to do. Write a driver to initialize the video encoder and then when the vga bios starts outputting to DVOA we should have signal correct? Thanks - Joe -- linuxbios mailing list linuxbios@linuxbios.org http://www.openbios.org/mailman/listinfo/linuxbios