Thanks Guennadi, Actually, I have been confused between MC & MB. Including this, the link of Laurent is very helpful for me to make M5MOLS subdev driver. Regard, HeungJun Kim 2010-12-08 ìí 4:23, Guennadi Liakhovetski ì ê: > Hi > > On Wed, 8 Dec 2010, Kim, HeungJun wrote: > >> Hi Guennadi, >> >> I wonder the difference with pixelcode mediabus and v4l2_colorspace. >> In mt9m001.c subdev driver, the "format" seems be determined using the >> combination pixelcode & colorspace. In the previous kernel >> version(before using Media Controller), >> somtimes the pixelformat is used for defining format of isp device. But, >> I gonna change to use Media Controller. > > The change to mediabus pixelcodes has happened a while ago, whereas media > controller is still not in the mainline. Mediabus is physically a bus > between various parts of the media (video) subsystem, e.g., between a > sensor and an SoC, or between resizers, format converters, etc., as long > as data between them is exchanged directly over a set of data and sync > lines, and not via mamory buffers. Original V4L2 fourcc codes on the other > side describe data format in _memory_. > > The use of a pixelcode and a colorspace has been selected for the new > mediabus API, so, that's what we have to use now in drivers, using this > API. > >> So, can you tell me where I find about Media Controller, especially >> pixelcode and colorspace? > > Again - these are not directly related things. The MC API has adopted, > extended and is using the mediabus API, Laurent has documented many things > wonderfully, have a look at > http://www.ideasonboard.org/media/media/subdev.html#v4l2-mbus-format > > 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
