W dniu 7 grudnia 2011 15:53 u?ytkownik Alex Deucher <alexdeucher at gmail.com> napisa?: > 2011/12/7 Rafa? Mi?ecki <zajec5 at gmail.com>: >> W dniu 7 grudnia 2011 14:53 u?ytkownik Alex Deucher >> <alexdeucher at gmail.com> napisa?: >>> 2011/12/7 Rafa? Mi?ecki <zajec5 at gmail.com>: >>>> In theory function atombios_get_encoder_mode should report >>>> ATOM_ENCODER_MODE_HDMI when TV supports audio. Current we report >>>> ATOM_ENCODER_MODE_DVI if card is DCE4. >>>> >>>> Is there any reason for it? Can we just drop that DCE4 condition? This >>>> fixme seems to be here since ever. >>>> >>> >>> It causes display corruption unless the hdmi packet engine is set up >>> properly. >> >> Even with radeon.audio=0? > > No, as in that case, DVI is returned. ?On DCE3.0 and newer chips there > is no explicit hdmi engine enable bit. ?You just select HDMI mode > rather than DVI mode in the digital encoder setup. ?So if you select > HDMI in the encoder setup and you have not configured the hdmi engine > correctly you will git display corruption or a blank screen. ?Which is > why I had to disable audio by default. ?Since audio is off by default, > the DCE4 conditional in the hdmi case could be removed.
OK, it makes sense, thanks. Btw I believe there *is* HDMI enabling bit on DCE3+, we probably just don't need to poke it manually :) It is bit 0x1000 in registers 0x7000, 0x7c00, 0x10800, 0x11400, 0x12000, 0x12c00 All my HDMI frames are ignored without that bit set. -- Rafa?
