In the new PCM streaming logic, the interface number is assigned to
usb stream instance (subs->interface) after the format and rate setups
are succeeded, but some codes are still passing subs->interface as the
reference to helper functions.  This leads to initializing with an
invalid iface number (-1).

This patch replaces the wrong references with the ones from the target
fmt correctly.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Reported-by: NJohn McFarland <mcfarljm@gmail.com>
Tested-by: NJohn McFarland <mcfarljm@gmail.com>
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This webcam works mostly ok, exept with skype.
Skype sends lots of ctrl messages to dynamically ajust
record level. If for some reasons it pokes some error
every thing goes broken:
- first pulseaudio blocks sound for all apps
- then video is reseted
- then skype freez

dmesg has lots of messages like:
cannot set freq 16000 to ep 0x86"

Setting ignore_ctl_error=1 fixes this problem.
Signed-off-by: NOleksij Rempel <bug-track@fisher-privat.net>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

if this cam is pluged in, pulse audio can't initiate capture
device.
dmesg has lots of messages like:
"cannot set freq 16000 to ep 0x86"

Setting ignore_ctl_error=1 fixes this problem.
Signed-off-by: NOleksij Rempel <bug-track@fisher-privat.net>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Signed-off-by: NDaniel Mack <zonque@gmail.com>
Cc: Torsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Fix a bogus sanity check for sync pipe in pcm.c. This flaw was
introduced during the streaming logic refactorization.

While at it, improve the error messages that are generated in such cases.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Reported-and-tested-by: <ben@b1c1l1.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

In 3.5 kernel, the endpoint is assigned dynamically for the
substreams, but the PCM assignment still checks the presence of the
endpoint pointer.  This ended up in duplicated PCM substream creations
at probing time, resulting in kernel warnings like:

WARNING: at fs/proc/generic.c:586 proc_register+0x169/0x1a6()
Pid: 1152, comm: modprobe Not tainted 3.5.0-rc1-00110-g71fae7e7 #2
Call Trace:
 [<ffffffff8102a400>] warn_slowpath_common+0x83/0x9c
 [<ffffffff8102a4bc>] warn_slowpath_fmt+0x46/0x48
 [<ffffffff813829ad>] ? add_preempt_count+0x39/0x3b
 [<ffffffff811292f0>] proc_register+0x169/0x1a6
 [<ffffffff8112962e>] create_proc_entry+0x74/0x8c
 [<ffffffffa018eb63>] snd_info_register+0x3e/0xc3 [snd]
 [<ffffffffa01fde2e>] snd_pcm_new_stream+0xb1/0x404 [snd_pcm]
 [<ffffffffa024861f>] snd_usb_add_audio_stream+0xd2/0x230 [snd_usb_audio]
 [<ffffffffa0241d33>] ? snd_usb_parse_audio_format+0x252/0x34f [snd_usb_audio]
 [<ffffffff810d6b17>] ? kmem_cache_alloc_trace+0xab/0xbb
 [<ffffffffa0248c29>] snd_usb_parse_audio_interface+0x4ac/0x567 [snd_usb_audio]
 [<ffffffffa023f0ff>] snd_usb_create_stream+0xe9/0x125 [snd_usb_audio]
 [<ffffffffa023f9b1>] usb_audio_probe+0x62a/0x72c [snd_usb_audio]
 .....

This patch fixes the regression by checking the fixed endpoint number
for each substream instead of the endpoint pointer.
Reported-and-tested-by: NJamie Heilman <jamie@audible.transient.net>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The array of sample rates is reallocated every time when opening
the PCM device, but was freed only once when unplugging the device.
Reported-by: N"Alexander E. Patrakov" <patrakov@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Set some substream struct members to make the proc interface code work
again.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Reported-by: NFelix Homann <linuxaudio@showlabor.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

get_min_max_with_quirks() must be called after the control id name
string is determined, but the current code changes the id name string
after calling the function.
Reported-by: NChristian Melki <christian.melki@ericsson.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Explained by Takashi in <s5hfwbtmz0q.wl%tiwai@suse.de>

> The reason is because get_min_max*() isn't called in the place you
> created these controls, and get_min_max() would be called only for
> integer volumes later even if uninitialized.  A short cut for booleans.
Signed-off-by: NMark Hills <mark@pogo.org.uk>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Also be more specific about some details while at it.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/usb/endpoint.c: In function 'queue_pending_output_urbs':
sound/usb/endpoint.c:298: warning: 'packet' may be used uninitialized in this function

Cc: Daniel Mack <zonque@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This adds controls for the effects section on the FTU devices.
Some of these controls need volume quirks. They are added to
mixer.c.

[fixed missing break by tiwai]
Signed-off-by: NFelix Homann <linuxaudio@showlabor.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This is in preparation for more FTU controls to come.
Should help keeping names a bit shorter.
Signed-off-by: NFelix Homann <linuxaudio@showlabor.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This adds db gain information to M-Audio Fast Track Ultra (8R) devices.
Signed-off-by: NFelix Homann <linuxaudio@showlabor.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Rename mixer_vol_tlv to snd_usb_mixer_vol_tlv and export it to make
it reuseable in mixer_quirks.c.
Signed-off-by: NFelix Homann <linuxaudio@showlabor.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Merge snd_maudio_ftu_create_ctl() and snd_ebox44_create_ctl() into
snd_create_std_mono_ctl().
As opposed to the ftu and ebox-44 specific functions, a TLV callback
can be specified for controls created by snd_create_std_mono_ctl().

[fixed minor checkpatch.pl warnings by tiwai]
Signed-off-by: NFelix Homann <linuxaudio@showlabor.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Drop some struct members and definitions that became obsolete during
the refactorization of the driver.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

The mixer units from the firmware are corrupt, and even where they
are valid they presents mono controls as L and R channels of
stereo.
Signed-off-by: NMark Hills <mark@pogo.org.uk>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Some interfaces reference endpoints which do not exists. To
accomodate these, do not fail completely, but skip over them.

This allows the Electrix Ebox-44 with earlier firmware to be
detected and used for audio.
Signed-off-by: NMark Hills <mark@pogo.org.uk>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Many fields have been moved to struct snd_usb_endpoint.
Also fix the proc output to correspond to the new structure.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

ep->fill_max is a 1 bit flag, thus it has to be boolean.
  sound/usb/endpoint.c: In function 'snd_usb_endpoint_set_params':
  sound/usb/endpoint.c:785: warning: overflow in implicit constant conversion
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/usb/endpoint.c: In function ‘deactivate_urbs’:
sound/usb/endpoint.c:520:16: warning: unused variable ‘flags’ [-Wunused-variable]
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Document the new streaming code and some of the functions so that
contributers can catch up easier.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Implicit feedback is a streaming mode that does not rely on dedicated
sync endpoints but uses the information provided by record streams to
clock output streams. Now that the streaming logic is decoupled from the
PCM streams, this is easy to implement.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

With the previous commit that added the new streaming model, all
endpoint and streaming related code is now in endpoint.c, and pcm.c
only acts as a wrapper for handling the packet's payload.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This patch adds a new generic streaming logic for audio over USB.

It defines a model (snd_usb_endpoint) that handles everything that
is related to an USB endpoint and its streaming. There are functions to
activate and deactivate an endpoint (which call usb_set_interface()),
and to start and stop its URBs. It also has function pointers to be
called when data was received or is about to be sent, and pointer to
a sync slave (another snd_usb_endpoint) that is informed when data has
been received.

A snd_usb_endpoint knows about its state and implements a refcounting,
so only the first user will actually start the URBs and only the last
one to stop it will tear them down again.

With this sort of abstraction, the actual streaming is decoupled from
the pcm handling, which makes the "implicit feedback" mechanisms easy to
implement.

In order to split changes properly, this patch only adds the new
implementation but leaves the old one around, so the the driver doesn't
change its behaviour. The switch to actually use the new code is
submitted separately.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This is needed for new card-wide list operations.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Signed-off-by: NTorsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Add a stereo volume control for analog input channel pair 1/2.
Signed-off-by: NTorsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Add a mute control for every analog output channel.
Signed-off-by: NTorsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Add a stereo volume control for every analog output pair 1/2, 3/4, 5/6.
Signed-off-by: NTorsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Remove the soft log-conversion and add a dB scale according to
the DAC documentation instead.
Signed-off-by: NTorsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Remove unused driver version information from the individual files.
Signed-off-by: NTorsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Commit 3702b082 added a lock, but did not account for the case of
SNDRV_PCM_POS_XRUN, which would get immediately overwritten.

This could be bundled into one if-else-if statement, but the goto
helps to clarify the 'exceptional' case.

Thanks to Andreas Pape for spotting this.
Signed-off-by: NMark Hills <mark@pogo.org.uk>
Acked-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>