linux.git/Documentation/sound, branch v3.19

ALSA: hda - Add "eapd" model string for AD1986A codec

2014-12-10T13:00:13+00:00

Also update the documentation to the latest state.

Signed-off-by: Takashi Iwai

ALSA: pcm: Add xrun_injection proc entry

2014-11-04T13:09:16+00:00

This patch adds a new proc entry for PCM substreams to inject an
XRUN.  When a PCM substream is running and any value is written to its
xrun_injection proc file, the driver triggers XRUN.  This is a useful
feature for debugging XRUN and error handling code paths.

Note that this entry is enabled only when CONFIG_SND_PCM_XRUN_DEBUG is
set.

Signed-off-by: Takashi Iwai

ALSA: pcm: Replace PCM hwptr tracking with tracepoints

2014-11-04T13:09:14+00:00

ALSA PCM core has a mechanism tracking the PCM hwptr updates for
analyzing XRUNs. But its log is limited (up to 10) and its log output
is a kernel message, which is hard to handle.

In this patch, the hwptr logging is moved to the tracing
infrastructure instead of its own. Not only the hwptr updates but
also XRUN and hwptr errors are recorded on the trace log, so that user
can see such events at the exact timing.

The new "snd_pcm" entry will appear in the tracing events:
# ls -F /sys/kernel/debug/tracing/events/snd_pcm
enable filter hw_ptr_error/ hwptr/ xrun/

The hwptr is for the regular hwptr update events. An event trace
looks like:

aplay-26187 [004] d..3 4012.834761: hwptr: pcmC0D0p/sub0: POS: pos=488, old=0, base=0, period=1024, buf=16384

"POS" shows the hwptr update by the explicit position update call and
"IRQ" means the hwptr update by the interrupt,
i.e. snd_pcm_period_elapsed() call. The "pos" is the passed
ring-buffer offset by the caller, "old" is the previous hwptr, "base"
is the hwptr base position, "period" and "buf" are period- and
buffer-size of the target PCM substream.
(Note that the hwptr position displayed here isn't the ring-buffer
offset. It increments up to the PCM position boundary.)

The XRUN event appears similarly, but without "pos" field.
The hwptr error events appear with the PCM identifier and its reason
string, such as "Lost interrupt?".

The XRUN and hwptr error reports on kernel message are still left, can
be turned on/off via xrun_debug proc like before. But the bit 3, 4, 5
and 6 bits of xrun_debug proc are dropped by this patch. Also, along
with the change, the message strings have been reformatted to be a bit
more consistent.

Last but not least, the hwptr reporting is enabled only when
CONFIG_SND_PCM_XRUN_DEBUG is set.

Signed-off-by: Takashi Iwai

ALSA: Update control names documentation

2014-10-20T13:37:36+00:00

This document was not really up-to-date. Add recent additions to this
standard - based on what the HDA driver currently does, which is some
kind of a de facto standard.

Signed-off-by: David Henningsson 
Signed-off-by: Takashi Iwai

ALSA: virtuoso: add Xonar Essence STX II support

2014-08-04T13:20:48+00:00

Just add the PCI ID for the STX II.  It appears to work the same as the
STX, except for the addition of the not-yet-supported daughterboard.

Tested-by: Mario 
Tested-by: corubba 
Cc: 
Signed-off-by: Clemens Ladisch 
Signed-off-by: Takashi Iwai

ALSA: hda - Update model list documentation for IDT codecs

2014-07-15T14:59:58+00:00

Just add missing recent entries.

Signed-off-by: Takashi Iwai

ALSA: hda - Adjust speaker HPF and add LED support for HP Spectre 13

2014-06-25T15:50:24+00:00

HP Spectre 13 has the IDT 92HD95 codec, and BIOS seems to set the
default high-pass filter in some "safer" range, which results in the
very soft tone from the built-in speakers in contrast to Windows.
Also, the mute LED control is missing, since 92HD95 codec still has no
HP-specific fixups for GPIO setups.

This patch adds these missing features: the HPF is adjusted by the
vendor-specific verb, and the LED is set up from a DMI string (but
with the default polarity = 0 assumption due to the incomplete BIOS on
the given machine).

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=74841
Cc: 
Signed-off-by: Takashi Iwai

doc: spelling error changes

2014-05-05T13:32:05+00:00

Fixed multiple spelling errors.

Acked-by: Randy Dunlap 
Signed-off-by: Carlos E. Garcia 
Signed-off-by: Jiri Kosina

x86, platforms: Remove SGI Visual Workstation

2014-02-27T16:07:39+00:00

The SGI Visual Workstation seems to be dead; remove support so we
don't have to continue maintaining it.

Cc: Andrey Panin 
Cc: Michael Reed 
Link: http://lkml.kernel.org/r/530CFD6C.7040705@zytor.com
Signed-off-by: H. Peter Anvin

ASoC: docs: Update the Overview document

2014-01-07T17:56:32+00:00

Update the ASoC overview to bring it up to date with the current code base
and include multi-component.

Signed-off-by: Liam Girdwood 
Signed-off-by: Mark Brown