Andy Walls wrote: > On Sun, 2009-03-01 at 00:01 +0100, Hans Verkuil wrote: >> On Saturday 28 February 2009 23:18:54 William M. Brack wrote: >> > When writing a new driver, which existing driver would be a good >> model >> > to use for handing the i2c bus? >> >> Hi Bill, >> >> I recommend reading Documents/video4linux/v4l2-framework.txt. It's >> not clear >> from your question whether you want an example driver for an i2c >> device, or >> an example for how to use i2c devices in an PCI or USB driver. >> >> A simple, but decent example source for the first would be wm8739.c >> and for >> the second we have saa7134 or cx18. >> >> It's a bit in flux at the moment since we are moving all drivers >> over to the >> v4l2_device/v4l2_subdev structure, but some still use the old model. > > Bill, > > Your question also did not specify if this was a driver for an analog > (V4L2) or DTV (DVB) capture unit. Hans' comments regarding > v4l2_device/v4l2_subdev currently only apply to analog capture units > or > the analog side of hybrid capture units. If you have a DTV-only > capture > unit, the v4l2_device/v4l2_subdevice framework doesn't apply at > present. > > AFAICT, the saa7134 and cx18 drivers both have code to deal with > hybrid > analog/DTV units. > > Regards, > Andy > >> Regards, >> >> Hans Sorry about my lack of clarity - I'm working on a driver to support the (analog) TW6800-series chips for v4l2. I've got most of the video working, using the cx88 driver as a model, and now want to add in i2c and vbi before asking for overall review by list members. I'll review v4l2-framework.txt, and read through applicable saa7134 and cx18 code. Thanks, Bill -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
