TASCAM FireWire series uses asynchronous transactions with fixed length payload for MIDI messaging. On the other hand, ALSA driver for the series has a redundant design to handle different length of payload.
This commit removes the redundant abstraction.
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/firewire/tascam/tascam-transaction.c | 22 +++++++--------------- sound/firewire/tascam/tascam.h | 3 +-- 2 files changed, 8 insertions(+), 17 deletions(-)
diff --git a/sound/firewire/tascam/tascam-transaction.c b/sound/firewire/tascam/tascam-transaction.c index dcbc003..2f5e20c 100644 --- a/sound/firewire/tascam/tascam-transaction.c +++ b/sound/firewire/tascam/tascam-transaction.c @@ -176,7 +176,6 @@ static void midi_port_work(struct work_struct *work) container_of(work, struct snd_fw_async_midi_port, work); struct snd_rawmidi_substream *substream = ACCESS_ONCE(port->substream); int generation; - int type;
/* Under transacting or error state. */ if (!port->idling || port->error) @@ -196,7 +195,7 @@ static void midi_port_work(struct work_struct *work) * Fill the buffer. The callee must use snd_rawmidi_transmit_peek(). * Later, snd_rawmidi_transmit_ack() is called. */ - memset(port->buf, 0, port->len); + memset(port->buf, 0, 4); port->consume_bytes = fill_message(substream, port->buf); if (port->consume_bytes <= 0) { /* Do it in next chance, immediately. */ @@ -210,12 +209,6 @@ static void midi_port_work(struct work_struct *work) return; }
- /* Calculate type of transaction. */ - if (port->len == 4) - type = TCODE_WRITE_QUADLET_REQUEST; - else - type = TCODE_WRITE_BLOCK_REQUEST; - /* Set interval to next transaction. */ port->next_ktime = ktime_add_ns(ktime_get(), port->consume_bytes * 8 * NSEC_PER_SEC / 31250); @@ -234,18 +227,18 @@ static void midi_port_work(struct work_struct *work) generation = port->parent->generation; smp_rmb();
- fw_send_request(port->parent->card, &port->transaction, type, + fw_send_request(port->parent->card, &port->transaction, + TCODE_WRITE_QUADLET_REQUEST, port->parent->node_id, generation, port->parent->max_speed, port->addr, - port->buf, port->len, async_midi_port_callback, + port->buf, 4, async_midi_port_callback, port); }
int snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port, - struct fw_unit *unit, u64 addr, unsigned int len) + struct fw_unit *unit, u64 addr) { - port->len = DIV_ROUND_UP(len, 4) * 4; - port->buf = kzalloc(port->len, GFP_KERNEL); + port->buf = kzalloc(4, GFP_KERNEL); if (port->buf == NULL) return -ENOMEM;
@@ -344,8 +337,7 @@ int snd_tscm_transaction_register(struct snd_tscm *tscm) for (i = 0; i < TSCM_MIDI_OUT_PORT_MAX; i++) { err = snd_fw_async_midi_port_init( &tscm->out_ports[i], tscm->unit, - TSCM_ADDR_BASE + TSCM_OFFSET_MIDI_RX_QUAD, - 4); + TSCM_ADDR_BASE + TSCM_OFFSET_MIDI_RX_QUAD); if (err < 0) goto error; } diff --git a/sound/firewire/tascam/tascam.h b/sound/firewire/tascam/tascam.h index 116a200..c89d7af 100644 --- a/sound/firewire/tascam/tascam.h +++ b/sound/firewire/tascam/tascam.h @@ -56,7 +56,6 @@ struct snd_fw_async_midi_port { struct fw_transaction transaction;
u8 *buf; - unsigned int len;
struct snd_rawmidi_substream *substream; int consume_bytes; @@ -149,7 +148,7 @@ int snd_tscm_stream_lock_try(struct snd_tscm *tscm); void snd_tscm_stream_lock_release(struct snd_tscm *tscm);
int snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port, - struct fw_unit *unit, u64 addr, unsigned int len); + struct fw_unit *unit, u64 addr); void snd_fw_async_midi_port_destroy(struct snd_fw_async_midi_port *port);
static inline void