@@ -698,7 +698,8 @@ static void handle_in_packet(struct amdtp_stream *s,
__be32 *buffer)
{
u32 cip_header[2];
- unsigned int data_blocks, data_block_quadlets, data_block_counter;
+ unsigned int data_blocks, data_block_quadlets, data_block_counter,
+ dbc_interval;
struct snd_pcm_substream *pcm = NULL;
bool lost;
@@ -741,11 +742,17 @@ static void handle_in_packet(struct amdtp_stream *s,
/* Check data block counter continuity */
data_block_counter = cip_header[0] & AMDTP_DBC_MASK;
- if (!(s->flags & CIP_DBC_IS_END_EVENT))
+ if (!(s->flags & CIP_DBC_IS_END_EVENT)) {
lost = data_block_counter != s->data_block_counter;
- else
+ } else {
+ if ((data_blocks > 0) && (s->tx_dbc_interval > 0))
+ dbc_interval = s->tx_dbc_interval;
+ else
+ dbc_interval = data_blocks;
+
lost = data_block_counter !=
- ((s->data_block_counter + data_blocks) & 0xff);
+ ((s->data_block_counter + dbc_interval) & 0xff);
+ }
if (lost) {
dev_info(&s->unit->device,
"Detect discontinuity of CIP: %02X %02X\n",
@@ -122,6 +122,9 @@ struct amdtp_stream {
struct snd_rawmidi_substream *midi[AMDTP_MAX_CHANNELS_FOR_MIDI * 8];
+ /* quirk: fixed interval of dbc between previos/current packets. */
+ unsigned int tx_dbc_interval;
+
bool callbacked;
wait_queue_head_t callback_wait;
struct amdtp_stream *sync_slave;
@@ -84,6 +84,7 @@ get_hardware_info(struct snd_efw *efw)
(hwinfo->arm_version >> 16) & 0xff);
if (err < 0)
goto end;
+ efw->firmware_version = hwinfo->arm_version;
strcpy(efw->card->driver, "Fireworks");
strcpy(efw->card->shortname, hwinfo->model_name);
@@ -54,6 +54,7 @@ struct snd_efw {
/* for quirks */
bool is_af9;
+ u32 firmware_version;
unsigned int midi_in_ports;
unsigned int midi_out_ports;
@@ -188,6 +188,9 @@ int snd_efw_stream_init_duplex(struct snd_efw *efw)
/* AudioFire9 always reports wrong dbs. */
if (efw->is_af9)
efw->tx_stream.flags |= CIP_WRONG_DBS;
+ /* Firmware version 5.5 reports fixed interval for dbc. */
+ if (efw->firmware_version == 0x5050000)
+ efw->tx_stream.tx_dbc_interval = 8;
err = init_stream(efw, &efw->rx_stream);
if (err < 0)
Fireworks firmware version 5.5 reports fix interval for dbc in each packet. For example, AudioFire4: CIP0 CIP1 Payload 00070000 900484FF 72 00070008 9004A8FF 72 00070008 90FFFFFF 02 00070010 9004D0FF 72 00070018 9004C4FF 72 00070020 9004E8FF 72 00070020 90FFFFFF 02 00070028 900410FE 72 The interval of each dbc should be 16 except for empty packet but it's still 8. This commit adds a flag for this quirk and codes to refer to a fixed value. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> --- sound/firewire/amdtp.c | 15 +++++++++++---- sound/firewire/amdtp.h | 3 +++ sound/firewire/fireworks/fireworks.c | 1 + sound/firewire/fireworks/fireworks.h | 1 + sound/firewire/fireworks/fireworks_stream.c | 3 +++ 5 files changed, 19 insertions(+), 4 deletions(-)