ALSA: bebob: Add support for M-Audio special Firewire series
This commit allows this driver to support some models which M-Audio produces
with DM1000 but its firmware is special. They are:
- Firewire 1814
- ProjectMix I/O
They have heavily customized firmware. The usual operations can't be applied to
them. For this reason, this commit adds a model specific member to 'struct
snd_bebob' and some model specific functions. Some parameters are write-only so
this commit also adds control interface for applications to set them.
M-Audio special firmware quirks:
- Just after powering on, they wait to download firmware. This state is
changed when receiving cue. Then bus reset is generated and the device is
recognized as a different model with the uploaded firmware.
- They don't respond against BridgeCo AV/C extension commands. So drivers
can't get their stream formations and so on.
- They do not start to transmit packets only by establishing connection but
also by receiving SIGNAL FORMAT command.
- After booting up, they often fail to send response against driver's request
due to mismatch of gap_count.
This module don't support to upload firmware.
Tested-by: Darren Anderson <darrena092@gmail.com> (ProjectMix I/O)
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/firewire/bebob/bebob.h b/sound/firewire/bebob/bebob.h
index a851639..eba0129 100644
--- a/sound/firewire/bebob/bebob.h
+++ b/sound/firewire/bebob/bebob.h
@@ -106,6 +106,9 @@
int dev_lock_count;
bool dev_lock_changed;
wait_queue_head_t hwdep_wait;
+
+ /* for M-Audio special devices */
+ void *maudio_special_quirk;
};
static inline int
@@ -237,6 +240,8 @@
extern struct snd_bebob_spec maudio_solo_spec;
extern struct snd_bebob_spec maudio_ozonic_spec;
extern struct snd_bebob_spec maudio_nrv10_spec;
+extern struct snd_bebob_spec maudio_special_spec;
+int snd_bebob_maudio_special_discover(struct snd_bebob *bebob, bool is1814);
#define SND_BEBOB_DEV_ENTRY(vendor, model, data) \
{ \