diff options
Diffstat (limited to 'sound/firewire/dice/dice-stream.c')
| -rw-r--r-- | sound/firewire/dice/dice-stream.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c index a6a39f7ef58d..4f74e3ef58fd 100644 --- a/sound/firewire/dice/dice-stream.c +++ b/sound/firewire/dice/dice-stream.c @@ -99,6 +99,7 @@ static int start_stream(struct snd_dice *dice, struct amdtp_stream *stream, unsigned int rate) { struct fw_iso_resources *resources; + __be32 reg[2]; unsigned int i, mode, pcm_chs, midi_ports; bool double_pcm_frames; int err; @@ -108,14 +109,20 @@ static int start_stream(struct snd_dice *dice, struct amdtp_stream *stream, goto end; if (stream == &dice->tx_stream) { resources = &dice->tx_resources; - pcm_chs = dice->tx_channels[mode]; - midi_ports = dice->tx_midi_ports[mode]; + err = snd_dice_transaction_read_tx(dice, TX_NUMBER_AUDIO, + reg, sizeof(reg)); } else { resources = &dice->rx_resources; - pcm_chs = dice->rx_channels[mode]; - midi_ports = dice->rx_midi_ports[mode]; + err = snd_dice_transaction_read_rx(dice, RX_NUMBER_AUDIO, + reg, sizeof(reg)); } + if (err < 0) + goto end; + + pcm_chs = be32_to_cpu(reg[0]); + midi_ports = be32_to_cpu(reg[1]); + /* * At 176.4/192.0 kHz, Dice has a quirk to transfer two PCM frames in * one data block of AMDTP packet. Thus sampling transfer frequency is @@ -224,8 +231,10 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate) } if (rate == 0) rate = curr_rate; - if (rate != curr_rate) - stop_stream(dice, master); + if (rate != curr_rate) { + err = -EINVAL; + goto end; + } if (!amdtp_stream_running(master)) { stop_stream(dice, slave); |