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ALSA: firewire-lib: rename parameter setting function for AM824 with FDF field

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The value of FDF field in CIP header is protocol-dependent. Thus, it's
better to allow data block processing layer to decide the value in any
timing.

In AM824 data format, the value of FDF field in CIP header indicates
N-flag and Nominal Sampling Frequency Code (sfc). The N-flag is for
switching 'Clock-based rate control mode' and 'Command-based rate control
mode'. In our implementation, 'Clock-based rate control mode' is just
supported. Therefore, When sampling transfer frequency is decided, then
the FDF can be set.

This commit replaces 'amdtp_stream_set_parameters' with
'amdtp_am824_set_parameters' to set the FDF. This is the same timing
to decide the ration between the number of data blocks and the number of
PCM frames.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto
2015-09-19 11:21:56 +09:00
committed by Takashi Iwai
parent 5955815e71
commit 51c29fd213
8 changed files with 62 additions and 33 deletions
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12
sound/firewire/bebob/bebob_stream.c
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@@ -427,17 +427,17 @@ make_both_connections(struct snd_bebob *bebob, unsigned int rate)
index = get_formation_index(rate);
pcm_channels = bebob->tx_stream_formations[index].pcm;
midi_channels = bebob->tx_stream_formations[index].midi;
err = amdtp_stream_set_parameters(&bebob->tx_stream, rate,
pcm_channels, midi_channels * 8,
false);
err = amdtp_am824_set_parameters(&bebob->tx_stream, rate,
pcm_channels, midi_channels * 8,
false);
if (err < 0)
goto end;
pcm_channels = bebob->rx_stream_formations[index].pcm;
midi_channels = bebob->rx_stream_formations[index].midi;
err = amdtp_stream_set_parameters(&bebob->rx_stream, rate,
pcm_channels, midi_channels * 8,
false);
err = amdtp_am824_set_parameters(&bebob->rx_stream, rate,
pcm_channels, midi_channels * 8,
false);
if (err < 0)
goto end;