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| author |   Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2021-05-24 12:13:46 +0900 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2021-05-25 08:54:38 +0200 |
| commit | 5ec85c198eff077e99bc5ff615eb9618004962e2 (patch) | |
| tree | 322ab5f142548fb154554042816f0677536cc5aa /sound/firewire/bebob/bebob.c | |
| parent | ALSA: bebob: cancel switching connection order (diff) | |
| download | linux-dev-5ec85c198eff077e99bc5ff615eb9618004962e2.tar.xz linux-dev-5ec85c198eff077e99bc5ff615eb9618004962e2.zip | |
ALSA: bebob: distinguish M-Audio ProFire Lightbridge quirk
In former commit, ALSA IEC 61883-1/6 packet streaming engine drops
initial tx packets till the packet includes any event. This allows ALSA
bebob driver not to give option to skip initial packet since the engine
does drop the initial packet.
However, M-Audio ProFire Lightbridge has a quirk to stop packet
transmission after start multiplexing event to the packet. After several
thousands cycles, it restart packet transmission again.
This commit specializes the usage of initial skip option for the model.
Additionally, this commit expands timeout enough to wait processing
content of tx packet.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210524031346.50539-5-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/bebob/bebob.c')
| -rw-r--r-- | sound/firewire/bebob/bebob.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sound/firewire/bebob/bebob.c b/sound/firewire/bebob/bebob.c index 90e98a6d1546..5938aa325f5e 100644 --- a/sound/firewire/bebob/bebob.c +++ b/sound/firewire/bebob/bebob.c @@ -64,6 +64,7 @@ static DECLARE_BITMAP(devices_used, SNDRV_CARDS); #define MODEL_MAUDIO_AUDIOPHILE_BOTH 0x00010060 #define MODEL_MAUDIO_FW1814 0x00010071 #define MODEL_MAUDIO_PROJECTMIX 0x00010091 +#define MODEL_MAUDIO_PROFIRELIGHTBRIDGE 0x000100a1 static int name_device(struct snd_bebob *bebob) @@ -210,6 +211,13 @@ do_registration(struct work_struct *work) if (err < 0) goto error; + // M-Audio ProFire Lightbridge has a quirk to transfer packets with discontinuous cycle or + // data block counter in early stage of packet streaming. The cycle span from the first + // packet with event is variable. + if (bebob->entry->vendor_id == VEN_MAUDIO1 && + bebob->entry->model_id == MODEL_MAUDIO_PROFIRELIGHTBRIDGE) + bebob->discontinuity_quirk = true; + err = snd_bebob_stream_init_duplex(bebob); if (err < 0) goto error; @@ -476,7 +484,7 @@ static const struct ieee1394_device_id bebob_id_table[] = { /* M-Audio NRV10 */ SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x00010081, &maudio_nrv10_spec), /* M-Audio, ProFireLightbridge */ - SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x000100a1, &spec_normal), + SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, MODEL_MAUDIO_PROFIRELIGHTBRIDGE, &spec_normal), /* Firewire 1814 */ SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x00010070, NULL), /* bootloader */ SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, MODEL_MAUDIO_FW1814, |