21438 Commits

Author SHA1 Message Date
Mark Brown
41caf0564e Merge remote-tracking branches 'asoc/topic/cx20442' and 'asoc/topic/davinci' into asoc-next 2015-04-12 19:48:56 +01:00
Mark Brown
6ca4aba43e Merge remote-tracking branches 'asoc/topic/4554', 'asoc/topic/ab8500', 'asoc/topic/ak4642', 'asoc/topic/arizona' and 'asoc/topic/atmel' into asoc-next 2015-04-12 19:48:51 +01:00
Mark Brown
7ad2d1d5b0 Merge remote-tracking branch 'asoc/topic/rt5645' into asoc-next 2015-04-12 19:48:49 +01:00
Mark Brown
aab0bb17ef Merge remote-tracking branch 'asoc/topic/intel' into asoc-next 2015-04-12 19:48:33 +01:00
Mark Brown
77b62fa5d2 Merge remote-tracking branch 'asoc/topic/dapm' into asoc-next 2015-04-12 19:48:31 +01:00
Mark Brown
d1113af4e8 Merge remote-tracking branch 'asoc/topic/core' into asoc-next 2015-04-12 19:48:30 +01:00
Mark Brown
89a88dd3d6 ASoC: Changes for v4.1
A selection of changes for v4.1 so far.  The main things are:
 
  - Move of jack registration to the card where it belongs.
  - Support for DAPM routes specified by both the machine driver and DT.
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Merge tag 'asoc-v4.1' into asoc-next

ASoC: Changes for v4.1

A selection of changes for v4.1 so far.  The main things are:

 - Move of jack registration to the card where it belongs.
 - Support for DAPM routes specified by both the machine driver and DT.

# gpg: Signature made Thu 05 Mar 2015 01:10:27 GMT using RSA key ID 5D5487D0
# gpg: WARNING: digest algorithm MD5 is deprecated
# gpg: please see https://gnupg.org/faq/weak-digest-algos.html for more information
# gpg: Oops: keyid_from_fingerprint: no pubkey
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg:                 aka "Mark Brown <broonie@debian.org>"
# gpg:                 aka "Mark Brown <broonie@kernel.org>"
# gpg:                 aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg:                 aka "Mark Brown <broonie@linaro.org>"
# gpg:                 aka "Mark Brown <Mark.Brown@linaro.org>"
2015-04-12 19:48:29 +01:00
Mark Brown
3eaecb4b50 Merge remote-tracking branch 'asoc/fix/wm8741' into asoc-linus 2015-04-12 19:48:27 +01:00
Mark Brown
250acc709e Merge remote-tracking branches 'asoc/fix/ak4642', 'asoc/fix/atmel', 'asoc/fix/cs4271', 'asoc/fix/davinci' and 'asoc/fix/rcar' into asoc-linus 2015-04-12 19:48:22 +01:00
Mark Brown
a37a9407ca Merge remote-tracking branch 'asoc/fix/pcm512x' into asoc-linus 2015-04-12 19:48:21 +01:00
Mark Brown
a55ede1661 Merge remote-tracking branch 'asoc/fix/intel' into asoc-linus 2015-04-12 19:48:20 +01:00
Mark Brown
dad0e523ed ASoC: Last minute fix for v4.0
This patch backs out a change that came in during the merge window which
 selects a configuration for GPIO4 on pcm512x CODECs that may not be
 suitable for all systems using the device.  Changes for v4.1 will make
 this properly configurable but for now it's safest to revert to the
 v3.19 behaviour and leave the pin configuration alone.
 
 Sorry for sending this direct at the last minute but due to the GPIO
 misuse it'd be really good to get it in the release and I'd not realised
 it hadn't been sent yet - between some travel, a job change and other
 non-urgent fixes coming in I'd lost track of the urgency.  It's been in
 -next for several weeks now, is isolated to the driver and fairly clear
 to inspection.
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Merge tag 'asoc-fix-v4.0-rc7' into asoc-linus

ASoC: Last minute fix for v4.0

This patch backs out a change that came in during the merge window which
selects a configuration for GPIO4 on pcm512x CODECs that may not be
suitable for all systems using the device.  Changes for v4.1 will make
this properly configurable but for now it's safest to revert to the
v3.19 behaviour and leave the pin configuration alone.

Sorry for sending this direct at the last minute but due to the GPIO
misuse it'd be really good to get it in the release and I'd not realised
it hadn't been sent yet - between some travel, a job change and other
non-urgent fixes coming in I'd lost track of the urgency.  It's been in
-next for several weeks now, is isolated to the driver and fairly clear
to inspection.

# gpg: Signature made Sat 11 Apr 2015 22:14:17 BST using RSA key ID 5D5487D0
# gpg: WARNING: digest algorithm MD5 is deprecated
# gpg: please see https://gnupg.org/faq/weak-digest-algos.html for more information
# gpg: Oops: keyid_from_fingerprint: no pubkey
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg:                 aka "Mark Brown <broonie@debian.org>"
# gpg:                 aka "Mark Brown <broonie@kernel.org>"
# gpg:                 aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg:                 aka "Mark Brown <broonie@linaro.org>"
# gpg:                 aka "Mark Brown <Mark.Brown@linaro.org>"
2015-04-12 19:48:19 +01:00
kbuild test robot
a5e5e12bd4 ASoC: Intel: fix array_size.cocci warnings
sound/soc/intel/haswell/sst-haswell-ipc.c:646:28-29: WARNING: Use ARRAY_SIZE

 Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element

Semantic patch information:
 This makes an effort to find cases where ARRAY_SIZE can be used such as
 where there is a division of sizeof the array by the sizeof its first
 element or by any indexed element or the element type. It replaces the
 division of the two sizeofs by ARRAY_SIZE.

Generated by: scripts/coccinelle/misc/array_size.cocci

CC: Jie Yang <yang.jie@intel.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-12 19:47:15 +01:00
Lars-Peter Clausen
b213b44a96 ASoC: davinci-evm: Use card DAPM context to access widgets
The dapm field of the snd_soc_codec struct will eventually be removed
(replaced with the DAPM context from the component embedded inside the
CODEC). Replace its usage with the card's DAPM context. The idea is that
DAPM is hierarchical and with the card at the root it is possible to access
widgets from other contexts through the card context.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-12 12:44:24 +01:00
Lars-Peter Clausen
ada602b30e ASoC: atmel: Improve machine driver compile test coverage
The Atmel ASoC machine drivers don't have any compile time arch dependencies
anymore. Make it possible to select them when COMPILE_TEST is enabled to get
better compile test coverage.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-12 12:40:57 +01:00
Lars-Peter Clausen
7ca92b8f5a ASoC: atmel: Add dependency to SND_SOC_I2C_AND_SPI where necessary
The SND_AT91_SOC_SAM9G20_WM8731 and SND_AT91_SOC_SAM9X5_WM8731 machine
driver symbols select SND_SOC_WM8731 which depends on SND_SOC_I2C_AND_SPI.
So the machine driver symbols need to depend on SND_SOC_I2C_AND_SPI as well,
otherwise we might end up with a invalid configuration, which will sooner or
later upset the randconfig auto-builders.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-12 12:40:57 +01:00
Howard Mitchell
14f0413ce3 ASoC: pcm512x: Remove hardcoding of pll-lock to GPIO4
Currently GPIO4 is hardcoded to output the pll-lock signal.
Unfortunately this is after the pll-out GPIO is configured which
is selectable in the device tree. Therefore it is not possible to
use GPIO4 for pll-out. Therefore this patch removes the
configuration of GPIO4.

Signed-off-by: Howard Mitchell <hm@hmbedded.co.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-11 22:09:14 +01:00
Jin Yao
0e7921e958 ASoC: Intel: Use the generic IPC/mailbox APIs in Broadwell
Use the generic IPC/mailbox APIs to replace the original processing
code for Broadwell platform.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-10 19:00:48 +01:00
Jin Yao
48cec59b6f ASoC: Intel: Use the generic IPC/mailbox APIs in Baytrail
Use the generic IPC/mailbox APIs to replace the original processing
code for Baytrail platform.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-10 19:00:45 +01:00
Jin Yao
a33c1ec5cf ASoC: Intel: Refactor common IPC/mailbox code into generic APIs
Currently in Intel SST driver, some similar IPC/mailbox processing
code are used in different platforms (e.g. in baytrail/broadwell).

This patch extracts the common code and creates new files
(sst-ipc.c/sst-ipc.h) to contain the common code and provide the generic
APIs for IPC/mailbox processing.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-10 19:00:37 +01:00
Kuninori Morimoto
a5053a8e20 ASoC: core: call snd_soc_runtime_set_dai_fmt() before soc_new_pcm()
Current snd_soc_runtime_set_dai_fmt() is called after
soc_probe_link_dais(). this means snd_soc_dai_set_fmt() will be
called after soc_new_pcm().

Before appling 1efb53a220b78fdfdbb97b726a2156713e75bdab
(ASoC: simple-card: Remove support for setting differing DAI formats)
simple-card user had (1) snd_soc_dai_set_fmt() -> soc_new_pcm(),
but, after that it is (2) soc_new_pcm() -> snd_soc_dai_set_fmt().
At least rsnd driver is assuming (1) pattern.

This patch move snd_soc_dai_set_fmt() into soc_probe_link_dais()
after the dai_link->init section to solve this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-10 16:11:12 +01:00
Mark Brown
1ddca24c53 Merge branch 'topic/dapm-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-core 2015-04-10 16:09:21 +01:00
Mark Brown
5f97a4bd2c Merge branch 'topic/delay' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-core 2015-04-10 16:04:46 +01:00
Kuninori Morimoto
c01673e0b7 ASoC: ak4642: fixup channels_min
ak4642 doesn't have Mono record, ak4643 have it, but not supported.
This patch fixes channel mismatch

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-10 11:03:48 +01:00
Lars-Peter Clausen
6553bf06a3 ASoC: Don't try to register debugfs entries if the parent does not exist
If the registration of a debugfs directory fails this is treated as a
non-fatal error in ASoC and operation continues as normal. This means we
need to be careful and check if the parent debugfs directory exists if we
try to register a debugfs file or sub-directory. Otherwise we might end up
passing NULL for the parent and the file or directory will be registered in
the top-level debugfs directory.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-09 12:23:14 +01:00
Lars-Peter Clausen
2e55b90a5e ASoC: Make soc_dpcm_debugfs_add() non-fatal
Failing to register the debugfs entries is not fatal and will not affect
normal operation of the sound card. Don't abort the card registration if
soc_dpcm_debugfs_add() fails.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-09 11:32:29 +01:00
Lars-Peter Clausen
0757d834eb ASoC: Create card debugfs directory earlier
Create the card debugfs directory at the begining of the initilization
rather then the end as various steps in the initilization sequence will try
to register files and sub-directories in the card directory.

Fixes: 4e2576bd36a1 ("ASoC: soc-core: initialize debugfs in snd_soc_instantiate_card()")
Reported-by: Fabio Estevam <festevam@gmail.com>
Reported-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-09 11:24:03 +01:00
Mark Brown
95a9ca7476 Linux 4.0-rc7
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Merge tag 'v4.0-rc7' into asoc-core

Linux 4.0-rc7
2015-04-09 11:23:57 +01:00
Dan Carpenter
75afbd052b ASoC: Intel: do cast earlier in sst_cdev_tstamp()
My static checker complains about these because it looks like the
multiply can overflow and then we cast to a larger data type.  I don't
think this is a problem, but it's also harmless to do the cast earlier
so let's silence the static checker warning.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-09 10:58:06 +01:00
Sudip Mukherjee
1f544fd8ff ASoC: Intel: remove unused functions
these functions were never called by anyone.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-08 17:47:23 +01:00
Jie Yang
8e64aedf80 ASoC: Intel: Fix a buffer overflow issue
0day robot reported a buffer overflow issue:

...
sound/soc/intel/haswell/sst-haswell-pcm.c:1107 hsw_pcm_probe() error: buffer\
overflow 'hsw_dais' 4 <= 4
sound/soc/intel/haswell/sst-haswell-pcm.c:1109 hsw_pcm_probe() error: buffer\
overflow 'hsw_dais' 4 <= 4
...

Fix it by initializing the index(i) to correct value.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-08 11:17:51 +01:00
Peter Ujfalusi
4cd9db0859 ASoC: davinci-mcasp: Fix ruledata setup in davinci_mcasp_startup
Passing &mcasp->ruledata[dir] to snd_pcm_hw_rule_add() is not correct since
commit:
7b3d165a2821 ASoC: davinci-mcasp: Index ruledata in drvdata with substream->stream
now sets up the struct based on the substream->stream (0 or 1) while we pass
a pointer which we take with dir (1 or 2). This will lead kernel crash.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-07 12:05:44 +01:00
kbuild test robot
f34c4bc7e5 ASoC: Intel: read_shim_data() can be static
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-06 20:10:43 +01:00
Jie Yang
b97169da06 ASoC: Intel: create atom folder and move atom platform files in
Restructure the sound/soc/intel/ directory: create atom folder, and move
sst atom platform files here.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-06 17:49:45 +01:00
Jie Yang
66a6fd9846 ASoC: Intel: create baytrail folder and move baytrail platform files in
Restructure the sound/soc/intel/ directory: create baytrail folder, and move
sst baytrail platform files here.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-06 17:49:45 +01:00
Jie Yang
e56c72d5f2 ASoC: Intel: create boards folder and move sst boards files in
Restructure the sound/soc/intel/ directory: create boards folder, and move
sst boards files here.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-06 17:49:45 +01:00
Jie Yang
ba57f68235 ASoC: Intel: create haswell folder and move haswell platform files in
Restructure the sound/soc/intel/ directory: create haswell folder, and
move haswell platform files here.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-06 17:49:45 +01:00
Jie Yang
2106241a68 ASoC: Intel: create common folder and move common files in
Restructure the sound/soc/intel/ directory: create common folder, and move
sst common files here.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-06 17:49:45 +01:00
Charles Keepax
158bf4ed7f ASoC: wm5102: Remove set of volume update bits for output 3R
The earpiece on wm5102 is mono, thus there is no output 3R. Don't toggle
the volume update bits for this output, although worth noting that doing
so had no negative effects it is just redundant.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-06 17:12:41 +01:00
Pascal Huerst
74ff960222 ASoC: cs4271: Increase delay time after reset
The delay time after a reset in the codec probe callback was too short,
and did not work on certain hw because the codec needs more time to
power on. This increases the delay time from 1us to 1ms.

Signed-off-by: Pascal Huerst <pascal.huerst@gmail.com>
Acked-by: Brian Austin <brian.austin@cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
2015-04-02 18:15:48 +01:00
Alexandre Belloni
c14e2591bf ASoC: atmel-pcm-dma: increase buffer_bytes_max
atmel-pcm-dma is not limited to a buffer size of 64kB like atmel-pcm-pdc.
Increase buffer_bytes_max to 512kB to allow for higher bit rates (i.e. 32bps at
192kHz) to work correctly. By default, keep the prealloc at 64kB.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-02 10:01:13 +01:00
Jyri Sarha
7b3d165a28 ASoC: davinci-mcasp: Index ruledata in drvdata with substream->stream
The serializer direction definitions runs from 1 to 2, which does not
suite the purpose. The substream->stream is perfect for the purpose
and should have been used from the beginning.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 21:34:15 +01:00
Lars-Peter Clausen
cd5d822688 ASoC: wm8350: Move delayed work struct from DAPM context to driver state
The wm8350 driver is the last driver that still uses the delayed_work field
from the snd_soc_dapm_context struct. Moving this over to the driver's
private data struct will allow us to remove the field from the DAPM context,
which will drastically reduce its size.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 21:28:10 +01:00
Lars-Peter Clausen
37660b6daf ASoC: Remove suspend_bias_level from DAPM context struct
The only two users of the suspend_bias_level field were two rather old
drivers which weren't exactly doing things by the book. Those drivers have
been updated and field is now unused and can be removed.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 21:28:04 +01:00
Lars-Peter Clausen
a1f0b96749 ASoC: wm8753: Cleanup manual bias level transitions
Set the CODEC driver's suspend_bias_off flag rather than manually going to
SND_SOC_BIAS_OFF in suspend and SND_SOC_BIAS_STANDBY in resume. This makes
the code a bit shorter and cleaner.

Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore either.

The manual transition to SND_SOC_BIAS_STANDBY at the end of CODEC probe()
can also be removed as the core will automatically do this after the CODEC
has been probed.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 21:28:01 +01:00
Lars-Peter Clausen
35afd9221b ASoC: wm8753: Integrate capacitor charging into the DAPM sequence
When being powered on, either initially on probe or when resuming from
suspend, the wm8971 configures the device for quick output capacitor
charging. Since the charging can take a rather long time (up to multiple
seconds) it is done asynchronously without blocking. A delayed work item is
run once the charging is finished and the device is switched to the target
bias level.

This all done asynchronously to the regular DAPM sequence accessing the same
data structures and registers without any looking, which can lead to race
conditions. Furthermore this potentially delays the start of stream on the
CODEC while the rest of the system is already up and running, meaning the
first bytes of audio are lost. It also does no comply with the assumption of
the DAPM core that if set_bias_level() returned successfully the device will
be at the requested bias level.

This patch slightly refactors things and makes sure that the caps charging
is properly integrated into the DAPM sequence. When transitioning from
SND_SOC_BIAS_OFF to SND_SOC_BIAS_STANDBY the part will be put into fast
charging mode and a work item will be scheduled that puts it back into
standby charging once the charging period has elapsed. If a playback or
capture stream is started while charging is in progress the driver will now
wait in SND_SOC_BIAS_PREPARE until the charging is done. This makes sure
that charging is done asynchronously in the background when the chip is
idle, but at the same time makes sure that playback/capture is not started
before the charging is done.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 21:27:44 +01:00
Lars-Peter Clausen
c59e6abba9 ASoC: wm8971: Cleanup manual bias level transitions
Set the CODEC driver's suspend_bias_off flag rather than manually going to
SND_SOC_BIAS_OFF in suspend and SND_SOC_BIAS_STANDBY in resume. This makes
the code a bit shorter and cleaner.

Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore either.

The manual transition to SND_SOC_BIAS_STANDBY at the end of CODEC probe()
can also be removed as the core will automatically do this after the CODEC
has been probed.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 21:27:41 +01:00
Lars-Peter Clausen
643518403c ASoC: wm8971: Integrate capacitor charging into the DAPM sequence
When being powered on, either initially on probe or when resuming from
suspend, the wm8971 configures the device for quick output capacitor
charging. Since the charging can take a rather long time (up to multiple
seconds) it is done asynchronously without blocking. A delayed work item is
run once the charging is finished and the device is switched to the target
bias level.

This all done asynchronously to the regular DAPM sequence accessing the same
data structures and registers without any looking, which can lead to race
conditions. Furthermore this potentially delays the start of stream on the
CODEC while the rest of the system is already up and running, meaning the
first bytes of audio are lost. It also does no comply with the assumption of
the DAPM core that if set_bias_level() returned successfully the device will
be at the requested bias level.

This patch slightly refactors things and makes sure that the caps charging
is properly integrated into the DAPM sequence. When transitioning from
SND_SOC_BIAS_OFF to SND_SOC_BIAS_STANDBY the part will be put into fast
charging mode and a work item will be scheduled that puts it back into
standby charging once the charging period has elapsed. If a playback or
capture stream is started while charging is in progress the driver will now
wait in SND_SOC_BIAS_PREPARE until the charging is done. This makes sure
that charging is done asynchronously in the background when the chip is
idle, but at the same time makes sure that playback/capture is not started
before the charging is done.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 21:27:36 +01:00
Lars-Peter Clausen
ab87ce1d9b ASoC: wm8971: Use system_power_efficient_wq instead of custom workqueue
The delayed work used by the wm8971 driver to manage the caps charging
doesn't have any special requirements that would justify using a custom
workqueue, just use the generic system_power_efficient_wq instead.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 21:27:33 +01:00
Alexandre Belloni
488cb53391 ASoC: atmel-pcm-pdc: merge atmel-pcm back in
atmel-pcm.c was split into two files to create a generic framework for both PDC
and DMA.

atmel-pcm-dma.c is using the generic dmaengine framework since 95e0e07e710e
(ASoC: atmel-pcm: use generic dmaengine framework).

Merge atmel-pcm.c in atmel-pcm-pdc.c as this is now the only user.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-01 21:24:27 +01:00