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ALSA: fireface: add model-dependent parameter for address range to receive async transaction 

In Fireface series, drivers can register destination address for
asynchronous transaction which transfers MIDI messages from device.

In former models, all of the transactions arrive at the registered
address without any offset. In latter models, each of the transaction
arrives at the registered address with sequential offset within 0x00
to 0x7f. This seems to be for discontinuity detection.

This commit adds model-dependent member for the address range.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2019-01-22 22:17:01 +09:00 committed by Takashi Iwai
parent 6c644e4e95
commit 900896771a
3 changed files with 4 additions and 1 deletions
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2
sound/firewire/fireface/ff-transaction.c
View File

@ -156,7 +156,7 @@ static int allocate_own_address(struct snd_ff *ff, int i)
struct fw_address_region midi_msg_region;
int err;
ff->async_handler.length = SND_FF_MAXIMIM_MIDI_QUADS * 4;
ff->async_handler.length = ff->spec->midi_addr_range;
ff->async_handler.address_callback = handle_midi_msg;
ff->async_handler.callback_data = ff;

2
sound/firewire/fireface/ff.c
View File

@ -159,6 +159,7 @@ static const struct snd_ff_spec spec_ff800 = {
.midi_out_ports = 1,
.protocol = &snd_ff_protocol_ff800,
.midi_high_addr = 0x000200000320ull,
.midi_addr_range = 12,
};
static const struct snd_ff_spec spec_ff400 = {
@ -169,6 +170,7 @@ static const struct snd_ff_spec spec_ff400 = {
.midi_out_ports = 2,
.protocol = &snd_ff_protocol_ff400,
.midi_high_addr = 0x0000801003f4ull,
.midi_addr_range = SND_FF_MAXIMIM_MIDI_QUADS * 4,
};
static const struct snd_ff_spec spec_ucx = {

1
sound/firewire/fireface/ff.h
View File

@ -54,6 +54,7 @@ struct snd_ff_spec {
const struct snd_ff_protocol *protocol;
u64 midi_high_addr;
u8 midi_addr_range;
};
struct snd_ff {