Commit 67d94c21 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Update descriptions about new position_fix values 



The new values for the recent Intel and AMD chips are missing in the
documentation.  Add the new descriptions.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 0067e154

Documentation/sound/alsa-configuration.rst

+2 −0
Original line number Diff line number Diff line
@@ -1001,6 +1001,8 @@ position_fix 
    2 = POSBUF: use position buffer,

    3 = VIACOMBO: VIA-specific workaround for capture,

    4 = COMBO: use LPIB for playback, auto for capture stream

    5 = SKL+: apply the delay calculation available on recent Intel chips

    6 = FIFO: correct the position with the fixed FIFO size, for recent AMD chips

probe_mask

    Bitmask to probe codecs (default = -1, meaning all slots);

    When the bit 8 (0x100) is set, the lower 8 bits are used

Documentation/sound/hd-audio/notes.rst

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Original line number Diff line number Diff line
@@ -66,6 +66,11 @@ by comparing both LPIB and position-buffer values. 
``position_fix=4`` is another combination available for all controllers,

and uses LPIB for the playback and the position-buffer for the capture

streams.

``position_fix=5`` is specific to Intel platforms, so far, for Skylake

and onward.  It applies the delay calculation for the precise position

reporting.

``position_fix=6`` is to correct the position with the fixed FIFO

size, mainly targeted for the recent AMD controllers.

0 is the default value for all other

controllers, the automatic check and fallback to LPIB as described in

the above.  If you get a problem of repeated sounds, this option might

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