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ALSA: dice/firewire-lib: Keep dualwire mode but obsolete CIP_HI_DUALWIRE

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In previous commit, AMDTP functionality in firewire-lib supports mapping
for PCM data channels. With this mapping, firewire-lib can obsolete
a flag, CIP_HI_DUALWIRE, but Dice driver still keeps dual wire mode.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto
2014-04-25 22:44:51 +09:00
committed by Takashi Iwai
parent 77d2a8a4f6
commit 10550bea44
3 changed files with 34 additions and 158 deletions
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33
sound/firewire/dice.c
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@@ -563,7 +563,7 @@ static int dice_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct dice *dice = substream->private_data;
unsigned int rate_index, mode;
unsigned int rate_index, mode, rate, channels, i;
int err;
mutex_lock(&dice->mutex);
@@ -575,15 +575,36 @@ static int dice_hw_params(struct snd_pcm_substream *substream,
if (err < 0)
return err;
rate_index = rate_to_index(params_rate(hw_params));
rate = params_rate(hw_params);
rate_index = rate_to_index(rate);
err = dice_change_rate(dice, rate_index << CLOCK_RATE_SHIFT);
if (err < 0)
return err;
/*
* At rates above 96 kHz, pretend that the stream runs at half the
* actual sample rate with twice the number of channels; two samples
* of a channel are stored consecutively in the packet. Requires
* blocking mode and PCM buffer size should be aligned to SYT_INTERVAL.
*/
channels = params_channels(hw_params);
if (rate_index > 4) {
if (channels > AMDTP_MAX_CHANNELS_FOR_PCM / 2) {
err = -ENOSYS;
return err;
}
for (i = 0; i < channels; i++) {
dice->stream.pcm_positions[i * 2] = i;
dice->stream.pcm_positions[i * 2 + 1] = i + channels;
}
rate /= 2;
channels *= 2;
}
mode = rate_index_to_mode(rate_index);
amdtp_stream_set_parameters(&dice->stream,
params_rate(hw_params),
params_channels(hw_params),
amdtp_stream_set_parameters(&dice->stream, rate, channels,
dice->rx_midi_ports[mode]);
amdtp_stream_set_pcm_format(&dice->stream,
params_format(hw_params));
@@ -1361,7 +1382,7 @@ static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
dice->resources.channels_mask = 0x00000000ffffffffuLL;
err = amdtp_stream_init(&dice->stream, unit, AMDTP_OUT_STREAM,
CIP_BLOCKING | CIP_HI_DUALWIRE);
CIP_BLOCKING);
if (err < 0)
goto err_resources;