Hi Paul, On Tue, Mar 22, 2011 at 11:28 PM, Paul Mundt <lethal@xxxxxxxxxxxx> wrote: > 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. > well yes , That could be enhanced and that would take care of Mauro's comment too. Thanks and regards, Mythri. -- 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
