On Fri, 5 Apr 2002 21:28:52 +0200 (CEST), Michel Lanners wrote: > >I wouldn't suppose you run the video across I2C, do you? > *grin*.. No. Just talking to the chip. >First sort the hardware out, then the software ;-). > >Concerning the hardware, I don't know the 69000 chips. What kind of >overlay input do they provide? You need to find out what format that is, That's actually already done. We have a working hardware implementation of what we want to do but its all DOS code talking directly to the 69000's registers. Now I could port the overlay portions of this over but then I have to run my app setuid root. Which that in its self is not really much of an issue for this app, but I don't want to re-do it if its already done. Or if I have to create something new then I want to have something useable by the rest of the community. >Most probably,the SAA7146 will not help you as it is designed to send Ooops wrong chip. sorry. I ment saa7111a. It's hooked up to the 69000 input. >I2C driver doesn't really matter. Just get something in place so you can >control your video chips. That's the area I'm asking about.. Looks to me like if we were to hook the 7111's up to the system I2C bus (via a 440bx chipset) then I would be able to talk to them via the kernel driver. From >2.4.x there even seems to be a 7111a driver. We don't really want to do that however as its a change from a design we know works. I also see that there is a X windows I2C module. So I'm wondering if the framework for this is already inplace via an X module. Then all I have to do is either find/write the driver for 69000 -> 7111a communications. >You need to check the data sheet whether the 69000 provides an I2C bus >controller. It might not.... It does. >I'd suggest going for implementing a v4l-compatible driver, and using >existing v4l apps on top of that. > >- any of the v4l overlay drivers, if you consider the video chip as > integrated into the grafics chip and disregard the PCI bus. > Ok.. I'll go prowl around the v4l overlay stuff. -- Richard A. Smith Bitworks, Inc. rsmith@xxxxxxxxxxxx 501.846.5777 x204 Sr. Design Engineer http://www.bitworks.com
