This commit is a preparation to support AMDTP domain.
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/firewire/tascam/tascam-stream.c | 71 +++++++++++++++++---------- 1 file changed, 44 insertions(+), 27 deletions(-)
diff --git a/sound/firewire/tascam/tascam-stream.c b/sound/firewire/tascam/tascam-stream.c index e852e46ebe6f..d5e77036e0ee 100644 --- a/sound/firewire/tascam/tascam-stream.c +++ b/sound/firewire/tascam/tascam-stream.c @@ -287,38 +287,60 @@ static int keep_resources(struct snd_tscm *tscm, unsigned int rate, fw_parent_device(tscm->unit)->max_speed); }
-int snd_tscm_stream_init_duplex(struct snd_tscm *tscm) +static int init_stream(struct snd_tscm *tscm, struct amdtp_stream *s) { + struct fw_iso_resources *resources; + enum amdtp_stream_direction dir; unsigned int pcm_channels; int err;
- /* For out-stream. */ - err = fw_iso_resources_init(&tscm->rx_resources, tscm->unit); - if (err < 0) - return err; - pcm_channels = tscm->spec->pcm_playback_analog_channels; + if (s == &tscm->tx_stream) { + resources = &tscm->tx_resources; + dir = AMDTP_IN_STREAM; + pcm_channels = tscm->spec->pcm_capture_analog_channels; + } else { + resources = &tscm->rx_resources; + dir = AMDTP_OUT_STREAM; + pcm_channels = tscm->spec->pcm_playback_analog_channels; + } + if (tscm->spec->has_adat) pcm_channels += 8; if (tscm->spec->has_spdif) pcm_channels += 2; - err = amdtp_tscm_init(&tscm->rx_stream, tscm->unit, AMDTP_OUT_STREAM, - pcm_channels); + + err = fw_iso_resources_init(resources, tscm->unit); if (err < 0) return err;
- /* For in-stream. */ - err = fw_iso_resources_init(&tscm->tx_resources, tscm->unit); + err = amdtp_tscm_init(s, tscm->unit, dir, pcm_channels); + if (err < 0) + fw_iso_resources_free(resources); + + return err; +} + +static void destroy_stream(struct snd_tscm *tscm, struct amdtp_stream *s) +{ + amdtp_stream_destroy(s); + + if (s == &tscm->tx_stream) + fw_iso_resources_destroy(&tscm->tx_resources); + else + fw_iso_resources_destroy(&tscm->rx_resources); +} + +int snd_tscm_stream_init_duplex(struct snd_tscm *tscm) +{ + int err; + + err = init_stream(tscm, &tscm->tx_stream); if (err < 0) return err; - pcm_channels = tscm->spec->pcm_capture_analog_channels; - if (tscm->spec->has_adat) - pcm_channels += 8; - if (tscm->spec->has_spdif) - pcm_channels += 2; - err = amdtp_tscm_init(&tscm->tx_stream, tscm->unit, AMDTP_IN_STREAM, - pcm_channels); + + err = init_stream(tscm, &tscm->rx_stream); if (err < 0) - amdtp_stream_destroy(&tscm->rx_stream); + destroy_stream(tscm, &tscm->tx_stream);
return err; } @@ -333,17 +355,12 @@ void snd_tscm_stream_update_duplex(struct snd_tscm *tscm) amdtp_stream_stop(&tscm->rx_stream); }
-/* - * This function should be called before starting streams or after stopping - * streams. - */ +// This function should be called before starting streams or after stopping +// streams. void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm) { - amdtp_stream_destroy(&tscm->rx_stream); - amdtp_stream_destroy(&tscm->tx_stream); - - fw_iso_resources_destroy(&tscm->rx_resources); - fw_iso_resources_destroy(&tscm->tx_resources); + destroy_stream(tscm, &tscm->rx_stream); + destroy_stream(tscm, &tscm->tx_stream); }
int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate)