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ALSA: bebob: delete workaround for protocol version 3
In a commit c4d860a0d2
("ALSA: bebob: loosen up severity of checking
continuity for BeBoB v3 quirk"), a workaround was added for the quirk in
BeBoB protocol version 3 against the discontinuity of data block counter.
As long as seeing with sequence replay for media clock recovery, such
quirk disappears.
This commit deletes the workaround.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210611035003.26852-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
parent
c66c630499
commit
82fb3bf92c
3 changed files with 0 additions and 17 deletions
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@ -75,7 +75,6 @@ name_device(struct snd_bebob *bebob)
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u32 hw_id;
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u32 data[2] = {0};
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u32 revision;
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u32 version;
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int err;
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/* get vendor name from root directory */
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@ -108,12 +107,6 @@ name_device(struct snd_bebob *bebob)
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if (err < 0)
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goto end;
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err = snd_bebob_read_quad(bebob->unit, INFO_OFFSET_BEBOB_VERSION,
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&version);
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if (err < 0)
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goto end;
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bebob->version = version;
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strcpy(bebob->card->driver, "BeBoB");
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strcpy(bebob->card->shortname, model);
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strcpy(bebob->card->mixername, model);
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@ -109,8 +109,6 @@ struct snd_bebob {
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/* for M-Audio special devices */
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void *maudio_special_quirk;
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/* For BeBoB version quirk. */
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unsigned int version;
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bool discontinuity_quirk;
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struct amdtp_domain domain;
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@ -456,14 +456,6 @@ static int init_stream(struct snd_bebob *bebob, struct amdtp_stream *stream)
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}
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if (stream == &bebob->tx_stream) {
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// BeBoB v3 transfers packets with these qurks:
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// - In the beginning of streaming, the value of dbc is
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// incremented even if no data blocks are transferred.
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// - The value of dbc is reset suddenly.
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if (bebob->version > 2)
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bebob->tx_stream.flags |= CIP_EMPTY_HAS_WRONG_DBC |
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CIP_SKIP_DBC_ZERO_CHECK;
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// At high sampling rate, M-Audio special firmware transmits
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// empty packet with the value of dbc incremented by 8 but the
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// others are valid to IEC 61883-1.
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