linux-toradex.git/sound/firewire/isight.c, branch tegra

ALSA: isight: adjust for new queueing API

2011-06-17T09:37:29+00:00

Since commit 13882a82ee16 (optimize iso queueing by setting
wake only after the last packet), drivers are required to call
fw_iso_context_queue_flush() after queueing a batch of packets.
The missing call would have an effect only if the controller
queue underruns, but then the DMA would stop completely.

Signed-off-by: Clemens Ladisch 
Signed-off-by: Takashi Iwai

ALSA: isight: fix locking

2011-05-11T12:53:09+00:00

Lockdep complains about conflicts between isight->mutex,
ALSA's register_mutex, mm->mmap_sem, and pcm->open_mutex.

This can be fixed by moving the calls to isight_pcm_abort(),
snd_card_disconnect(), and fw_iso_resources_update() out of
isight->mutex.  These functions are designed to be called
asynchronously; the mutex needs to protect only the device
streaming state modified by isight_start/stop_streaming().

Signed-off-by: Clemens Ladisch 
Reported-by: Stefan Richter 
Signed-off-by: Takashi Iwai

ALSA: isight: fix hang when unplugging a running device

2011-05-11T12:53:08+00:00

When aborting a PCM stream, the xrun is signaled only if the stream is
running.  When disconnecting a PCM stream, calling snd_card_disconnect()
too early would change the stream into a non-running state and thus
prevent the xrun from being noticed by user space.

To prevent this, move the snd_card_disconnect() call after the xrun.

Signed-off-by: Clemens Ladisch 
Signed-off-by: Takashi Iwai

ALSA: isight: wrap up register accesses

2011-05-11T12:52:54+00:00

Signed-off-by: Stefan Richter 
[cl: removed superfluous variable]
Signed-off-by: Clemens Ladisch 
Signed-off-by: Takashi Iwai

ALSA: isight: add AudioEnable register write

2011-05-11T12:51:20+00:00

which is needed to get the iSight to talk.

Signed-off-by: Stefan Richter 
Signed-off-by: Clemens Ladisch 
Signed-off-by: Takashi Iwai

ALSA: isight: fix divide error when queueing packets

2011-05-11T12:51:16+00:00

Set the .header_size field when queueing packets to avoid a division by
zero.

Signed-off-by: Clemens Ladisch 
Signed-off-by: Takashi Iwai

ALSA: isight: fix packet requeueing

2011-05-11T12:51:13+00:00

After handling a received packet, we want to resubmit the same packet,
so do not increase the packet index too early.

Signed-off-by: Clemens Ladisch 
Signed-off-by: Takashi Iwai

ALSA: isight: fix isight_pcm_abort() crashes

2011-05-11T12:51:09+00:00

Fix crashes in isight_pcm_abort() that happen when the driver tries to
access isight->pcm->runtime which does not exist when the device is not
open.  Introduce a new field pcm_active to track this state.

Signed-off-by: Clemens Ladisch 
Reported-by: Stefan Richter 
Signed-off-by: Takashi Iwai

ALSA: add Apple iSight microphone driver

2011-05-11T12:51:05+00:00

This adds an experimental driver for the front and rear microphones of
the Apple iSight web camera.

Signed-off-by: Clemens Ladisch 
Signed-off-by: Takashi Iwai