On Tue, Mar 22, 2011 at 02:52:59PM -0300, Mauro Carvalho Chehab wrote: > Em 22-03-2011 14:32, Mythri P K escreveu: > > Adding support for common EDID parsing in kernel. > > > > EDID - Extended display identification data is a data structure provided by > > a digital display to describe its capabilities to a video source, This a > > standard supported by CEA and VESA. > > > > There are several custom implementations for parsing EDID in kernel, some > > of them are present in fbmon.c, drm_edid.c, sh_mobile_hdmi.c, Ideally > > parsing of EDID should be done in a library, which is agnostic of the > > framework (V4l2, DRM, FB) which is using the functionality, just based on > > the raw EDID pointer with size/segment information. > > > > With other RFC's such as the one below, which tries to standardize HDMI API's > > It would be better to have a common EDID code in one place.It also helps to > > provide better interoperability with variety of TV/Monitor may be even by > > listing out quirks which might get missed with several custom implementation > > of EDID. > > http://permalink.gmane.org/gmane.linux.drivers.video-input-infrastructure/30401 > > > > This patch tries to add functions to parse some portion EDID (detailed timing, > > monitor limits, AV delay information, deep color mode support, Audio and VSDB) > > If we can align on this library approach i can enhance this library to parse > > other blocks and probably we could also add quirks from other implementation > > as well. > > > > Signed-off-by: Mythri P K <mythripk@xxxxxx> > > --- > > arch/arm/include/asm/edid.h | 243 ++++++++++++++++++++++++++++++ > > drivers/video/edid.c | 340 +++++++++++++++++++++++++++++++++++++++++++ > > Hmm... if you want this to be agnostic, the header file should not be inside > arch/arm, but on some other place, like include/video/. > Ironically this adds a drivers/video/edid.c but completely ignores drivers/video/edid.h which already exists and already contains many of these definitions. I like the idea of a generalized library, but it would be nice to see the existing edid.h evolved and its users updated incrementally. -- 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
