On Monday 09 March 2009 02:42:03 Dongsoo Nathaniel Kim wrote: > Hello Hans, > > I've been working on camera device based on v4l2-int-device until now, > but to follow latest work of yours I decided to make my driver in v4l2 > subdev before I send patch to the list. > So I'm trying to find any passable driver to reference but I haven't > found any one yet. > Only thing I could find was v4l2-framework.txt for now. Am I missing > something? I've not look into every single repository in hg yet, but > which one could be the right one I am looking for? > Please give me a guideline if there are some further work besides > v4l2-framework.txt. > Cheers, > > Nate Hi Nate, In the master v4l-dvb (www.linuxtv.org/hg/v4l-dvb) almost all i2c modules have been converted. It can however be confusing due to the use of backwards compatibility headers v4l2-i2c-drv.h and v4l2-i2c-drv-legacy.h. The latter will disappear once all adapter drivers have been converted. The first is still needed since the v4l-dvb master also supports kernels < 2.6.22. There has been a lot of discussion about that and it looks like v4l2-i2c-drv.h will probably disappear as well in the future as we will attempt to do the backwards compatibility in a different way. Since you don't need such compatibility, you can ignore those headers and only concentrate on the subdev changes. Good examples are wm8739.c and saa7115.c. Note that there are no sensor drivers converted as these are currently all soc-camera or v4l2-int based. I'm sure that you will need to add new ops to v4l2-subdev.h for sensor drivers. The v4l-dvb master also contains several PCI and USB drivers that are converted to use v4l2_device/v4l2_subdev. Probably the best to look at is saa7134. Also interesting is cx18 since that models the analog digitizer part of the cx23418 device as a subdev, thus demonstrating that sub-devices do not have to be actual i2c devices. It would be great if at least one sensor driver could be implemented in v4l2_subdev before the 2.6.30 merge window opens. Any changes that need to be made to v4l2_subdev to support such drivers will then be in the 2.6.30 tree which will make it easier for you to track compared to v4l-dvb. Regards, Hans -- Hans Verkuil - video4linux developer - sponsored by TANDBERG -- 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
