On Mon, Aug 13, 2012 at 11:42:49AM +0200, Bernhard Froemel wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Dear all, > > Apple changed the interface to the gmux device in recent models (at > least MBP 10,1). > This patch [1] (also attached) against 3.6-rc1 adds support for the > changed interface. > Previously the interface to gmux registers was memory mapped, now there > is a message box > interface (address, status, data I/O ports). The gmux register layout > itself seems to be unchanged. > I chose rather safe delays (1 ms) for access relaxation -- without any > relaxation the > communication is unreliable for me. > If someone with an older MBP could test whether the interface detection > (DPM/classic) works it > would be great. I used a similar detection routine Apple is using in > their driver. Matthew also made some progress with this last week, at least enough to get the backlight working. From what I remember of looking at his changes these look fairly similar, but I think his implementation looked cleaner and possibly more complete. > I see that there is a lot going on concerning and related to the > apple-gmux currently: > https://lkml.org/lkml/2012/7/9/715 > https://lkml.org/lkml/2012/8/3/300 I'm slowly making progress on the graphics switching stuff. I've got patches for vga_switcheroo and apple-gmux that make the muxing itself work fine, the problems now all revolve around making the graphics drivers deal with difficult behavior from Apple machines. Thanks, Seth -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
