On Thu, 15 Sep 2011, Scott Jiang wrote: > 2011/9/15 Guennadi Liakhovetski <g.liakhovetski@xxxxxx>: > > On Thu, 15 Sep 2011, Scott Jiang wrote: > > > >> accually this array is to convert mbus to pixformat. ppi supports any formats. > > > > You mean, it doesn't distinguish formats? It just packs bytes in RAM > > exactly as it ready them from the bus, and doesn't support any formats > > natively, i.e., doesn't offer any data processing? > > > yes, ppi means Parallel Peripheral Interface. > > >> Ideally it should contain all formats in v4l2, but it is enough at > >> present for our platform. > >> If I find someone needs more, I will add it. > >> So return -EINVAL means this format is out of range, it can't be supported now. > > > > You might consider using > > > > drivers/media/video/soc_mediabus.c > > > > If your driver were using soc-camera, it could benefit from the > > dynamically built pixel translation table, see > > > > drivers/media/video/soc_camera.c::soc_camera_init_user_formats() > > > > and simpler examples like mx1_camera.c or more complex ones like > > sh_mobile_ceu_camera.c, pxa_camera.c or mx3_camera.c and the use of the > > soc_camera_xlate_by_fourcc() function in them. > > > I have considered using soc, but it can't support decoder when I began > to write this driver in 2.6.38. soc_mediabus.c is a stand-alone module, it has no dependencies on soc-camera. Out of interest - what kind of decoder you mean? A tv-decoder? We do have a tv-decoder driver tw9910 under soc-camera. Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ -- 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
