On Sun, Dec 06, 2015 at 10:23:41PM +0900, Takashi Sakamoto wrote: > Unfortunately, ffado library can disturb this functionality. > In RME::Device::init_hardware() function, the library sends a write transaction > to 0x0000801003f4 with invalid value as higher part of address in IEEE 1212 or > ISO/IEC 13213. This is a worst case I describe in patch 03. The number which FFADO writes to this register is not invalid: it is in fact the same number which is used in drivers on other operating systems (obtained from protocol analysis). > I think it better that FFADO developers fixes the bug as long as they doesn't > support MIDI functionality. As above, this is not exactly a bug because other systems set that register to the value which FFADO uses. In the interests of interoperability I'm willing to remove manipulation of this register from FFADO, but I suggest that in time the ALSA driver should consider setting this register as is done under other systems or else we could introduce subtle behavioural differences down the track - at least until such time as we understand what the high part of that register does. jonathan _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
