git log v3.5..v3.7 --grep='switcheroo'

file_458746.txt (text/plain), 2.43 KB, created by Tom Wijsman (TomWij) (RETIRED) on 2013-07-01 16:48:40 UTC

commit 128960a9ad67e2d119738f5211956e0304517551
Author: Takashi Iwai <[e-mail]>
Date:   Fri Oct 12 17:28:18 2012 +0200

    ALSA: hda - Fix registration race of VGA switcheroo
    
    Delay the registration of VGA switcheroo client to the end of the
    probing.  Otherwise a too quick switching may result in Oops during
    probing.
    
    Also add the check of the return value from snd_hda_lock_devices().
    
    Reported-and-tested-by: Daniel J Blueman <[e-mail]>
    Cc: <[e-mail]> [v3.5+]
    Signed-off-by: Takashi Iwai <[e-mail]>

commit e99eac5e4ea3bd8671bb1cedad10c3fec90ec0de
Author: Seth Forshee <[e-mail]>
Date:   Fri Aug 17 11:17:02 2012 -0500

    vga_switcheroo: Don't require handler init callback
    
    This callback is a no-op in nouveau, and the upcoming apple-gmux
    switcheroo support won't require it either. Rather than forcing drivers
    to stub it out, just make it optional and remove the callback from
    nouveau.
    
    Signed-off-by: Seth Forshee <[e-mail]>
    Signed-off-by: Matthew Garrett <[e-mail]>

commit 36704c0c4c64f889d77158d497f6a7e596d1341c
Author: Seth Forshee <[e-mail]>
Date:   Fri Aug 17 11:17:03 2012 -0500

    vga_switcheroo: Remove assumptions about registration/unregistration ordering
    
    vga_switcheroo assumes that the handler will be registered before the
    last client, otherwise switching will not be enabled. Likewise it's
    assumed that the handler will not be unregistered without at least one
    client also being unregistered, otherwise switching will remain enabled
    despite no longer having a handler. These assumptions cannot be enforced
    if the handler is in a separate driver from both clients, as with the
    gmux found in Apple laptops. Remove this assumption.
    
    Signed-off-by: Seth Forshee <[e-mail]>
    Signed-off-by: Matthew Garrett <[e-mail]>

commit 76b487dd5187a4d7cc6eccd452f65467a8c7768b
Author: Andreas Heider <[e-mail]>
Date:   Fri Aug 17 11:17:04 2012 -0500

    apple-gmux: Add display mux support
    
    Add support for the gmux display muxing functionality and register a mux
    handler with vga_switcheroo.
    
    Signed-off-by: Andreas Heider <[e-mail]>
    Signed-off-by: Seth Forshee <[e-mail]>
    Signed-off-by: Matthew Garrett <[e-mail]>