24470 Commits

Author SHA1 Message Date
Takashi Sakamoto
956dea9e91 ALSA: oxfw: discontinue MIDI substream for scs1x at transaction failure
With a previous commit, ALSA oxfw driver retries transferring MIDI
messages at transaction failure for scs1x. On the other hand, there're
fatal transaction error. Then, no MIDI messages reach to the unit anymore.
In this case, MIDI substream should be terminated.

This commit stops MIDI transmission after the fatal error occurs.
Unfortunately, unlike ALSA PCM functionality, ALSA rawmidi core has no
feature to discontinue MIDI substream runtime in kernel side, thus this
commit just stops MIDI transmission without notifying it to userspace.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-24 16:32:08 +01:00
Takashi Sakamoto
b4c23ab1cb ALSA: oxfw: retry MIDI transferring for scs1x at transaction failure
Currently, ALSA oxfw driver has a TODO to retry MIDI transferring
at transaction failure.

This commit achieves it. Current implementation uses snd_rawmidi_transmit()
to transfer messages, thus the target MIDI messages are not in buffer when
transaction failure is detected. Although we cannot use a pair of
snd_rawmidi_transmit_peek() and snd_ramwidi_transmit_ack(), the
messages are still in scs1x specific structure and the data is available
for retries.

This commit adds a member to the structure for the length of buffered
messages, and uses the value again at retries.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-24 16:31:54 +01:00
Jeeja KP
8be3838af0 ASoC: Intel: boards: Remove WoV sink in nau88125_max98357a machine
WoV module needs to be triggered with PCM open, so remove this as
DAPM Sink and will be connected to FE

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 17:29:47 +09:00
Jeeja KP
98ee1745c8 ASoC: Intel: boards: Remove WoV sink in nau88125_ssm4567 machine
WoV module needs to be triggered with PCM open, so remove this as
DAPM Sink and will be connected to FE

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 17:29:47 +09:00
Jeeja KP
aac5cc88b1 ASoC: Intel: boards: Remove WoV sink in skl_rt286
WoV module needs to be triggered with PCM open, so remove this as
DAPM Sink and will be connected to FE

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 17:29:47 +09:00
Sathya Prakash M R
5093f9287c ASoC: Intel: boards: Add IV feedback route for nau88l25_ssm4567 machine
SSM4567 supports IV feedback for feedback to the speaker
protection algorithm

Signed-off-by: Sathya Prakash M R <sathya.prakash.m.r@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 17:29:47 +09:00
Sathyanarayana Nujella
0ab338ff33 ASoC: Intel: boards: Enable HDMI and DP on SKL nau88l25_max98357 machine
This patch adds 2 HDMI FE and BE dai links and also
initializes the jack for each device.

Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Signed-off-by: Fang, Yang A <yang.a.fang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 17:29:47 +09:00
Jeeja KP
bc5f6ac9a6 ASoC: Intel: boards: Enable HDMI and DP on nau88l2 machine
This patch adds 2 HDMI FE and BE dai links and also
initializes the jack for each device.

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 17:29:47 +09:00
Jeeja KP
23905cd1ca ASoC: Intel: boards: Enable HDMI and DP on skl_rt286 machine
Skylake platform has 3 pin widgets in HDMI codec. This patch adds
3 FE and BE dai links to support these in rt286 machine

Also add jack initialization for each of the device.

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 17:29:47 +09:00
Bard Liao
0ce58cd6ce ASoC: rt298: Don't enable IRQ in i2c_probe
The IRQ function should not be enabled before irq handler is registered.
In fact, it is done in rt298_probe. So remove it from rt298_i2c_probe.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 17:24:34 +09:00
Bard Liao
4b2fe3822a ASoC: rt298: enable IRQ for jack detection
There are some registers needed for enabling rt298 IRQ missed on
current driver.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 17:24:34 +09:00
Andreas Irestål
aaf0f3aeeb ASoC: adau17x1: Add basic DT support for adau17x1
Signed-off-by: Andreas Irestål <andire@axis.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 13:14:05 +09:00
Andreas Irestål
d6dde63e90 ASoC: adau17x1: Correct typos in file headers
Signed-off-by: Andreas Irestål <andire@axis.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 13:14:05 +09:00
Andreas Irestål
7c139db2e5 ASoC: adau17x1: Fix incorrect BCLK ratio definitions
Signed-off-by: Andreas Irestål <andire@axis.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 13:12:10 +09:00
Richard Fitzgerald
2595b7fe1a ASoC: arizona: Make logging of FLL calculations clearer
The debug logging of FLL calculations was confusing. Values were
printed in hex without indicating this by a leading 0x, and
despite these normally being required in decimal. Also where the
register value isn't the actual value (it s a power-of-two or
0 means 1, 1 means 2, ...)  it was unclear whether the actual or
register value was shown.

This patch changes the log print so that all mathematical values
are shown in decimal, all register values are shown in hex with a
0x prefix, and where the register value isn't the actual integer
value the decimal integer value is shown in () after the hex
register value.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 13:08:41 +09:00
Axel Lin
9dcc72efae ASoC: max9867: Use params_width instead of open-coded
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: anish kumar <yesanishhere@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 13:07:11 +09:00
Andrzej Hajda
127a9cbb58 ASoC: max9867: fix type of variable containing error codes
value variable can contain error values and is compared with zero.
Its type must be signed.

The problem has been detected using coccinelle script
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 13:07:02 +09:00
Robert Jarzmik
da9b9303ed ASoC: wm9713: fix regmap free path
In the conversion to regmap, I assumed that the devm_() variant could be
used in the soc probe function.

As a mater of fact with the current code the regmap is freed twice
because of the devm_() call:
(mutex_lock) from [<c01f6624>] (debugfs_remove_recursive+0x50/0x1d0)
(debugfs_remove_recursive) from [<c02bf800>] (regmap_debugfs_exit+0x1c/0xd4)
(regmap_debugfs_exit) from [<c02ba1f8>] (regmap_exit+0x28/0xc8)
(regmap_exit) from [<c02aa258>] (release_nodes+0x18c/0x204)
(release_nodes) from [<c02a278c>] (device_release+0x18/0x90)
(device_release) from [<c0239030>] (kobject_release+0x90/0x1bc)
(kobject_release) from [<c0395c94>] (wm9713_soc_remove+0x1c/0x24)
(wm9713_soc_remove) from [<c0384884>] (soc_remove_component+0x50/0x7c)
(soc_remove_component) from [<c0386c28>] (soc_remove_dai_links+0x118/0x228)
(soc_remove_dai_links) from [<c038721c>] (snd_soc_register_card+0x4e4/0xdd4)
(snd_soc_register_card) from [<c0393c54>] (devm_snd_soc_register_card+0x34/0x70)

Fix this by replacing the devm_regmap initialization code with the non
devm_() variant.

Fixes: 700dadfefc3d ASoC: wm9713: convert to regmap
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-24 12:43:06 +09:00
Libin Yang
fb087eaaef ALSA: hda - hdmi eld control created based on pcm
eld control is created based on pcm now.
When monitor is connected, eld control will be bound to
pin automatically.

Signed-off-by: Libin Yang <libin.yang@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-23 10:33:44 +01:00
Takashi Iwai
fe0d128c57 ALSA: jack: Allow building the jack layer without input device
Since the recent integration of kctl jack and input jack layers, we
can basically build the jack layer even without input devices.  That
is, the jack layer itself can be built with conditional to enable the
input device support or not, while the users may enable always
CONFIG_SND_JACK unconditionally.

For achieving it, this patch changes the following:
- A new Kconfig, CONFIG_SND_JACK_INPUT_DEV, was introduced to indicate
  whether the jack layer supports the input device,
- A few items in snd_jack struct and relevant codes are conditionally
  built upon CONFIG_SND_JACK_INPUT_DEV,
- The users of CONFIG_SND_JACK drop the messy dependency on
  CONFIG_INPUT.

This change also automagically fixes a potential bug in HD-audio
driver Arnd reported, where the NULL or uninitialized jack instance is
dereferenced.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-23 09:03:07 +01:00
Jeeja KP
571d507809 ASoC: hdac_hdmi: Add PM support
The codec registers are reset during S3. So need to reconfigure
all pins and DP1.2 feature again after resume from S3. Also
reprogram the required registers if the S3 was triggered during
playback.

In suspended state ELD notify callback is not processed, So add
ELD check for all pins as well.

Also turn the codec power domain OFF which is kept ON during
controller resequencing and codec reenumeration.

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-23 06:25:49 +09:00
Subhransu S. Prusty
7ed49700c4 ASoC: hdac_hdmi: Fix to wait for D3 before powering off codec
Powering off codec immediately after sending D3 verb may not set
the node to D3 state. So wait for a confirmation response before
shutting down codec.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-23 06:25:49 +09:00
Takashi Iwai
7e31a01594 ALSA: hda - Apply clock gate workaround to Skylake, too
Some Skylake machines show the codec probe errors in certain
situations, e.g. HP Z240 desktop fails to probe the onboard Realtek
codec at reloading the snd-hda-intel module like:
  snd_hda_intel 0000:00:1f.3: spurious response 0x200:0x2, last cmd=0x000000
  snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to polling mode: lastcmd=0x000f0000
  snd_hda_intel 0000:00:1f.3: No response from codec, disabling MSI: last cmd=0x000f0000
  snd_hda_intel 0000:00:1f.3: Codec #0 probe error; disabling it...
  hdaudio hdaudioC0D2: no AFG or MFG node found
  snd_hda_intel 0000:00:1f.3: no codecs initialized

Also, HP G470 G3 suffers from the similar problem, as reported in
bugzilla below.  On this machine, the codec probe error appears even
at a fresh boot.

As Libin suggested, the same workaround used for Broxton in the commit
[6639484ddaf6: ALSA: hda - disable dynamic clock gating on Broxton
 before reset] can be applied for Skylake in order to fix this problem.
The Intel HW team also confirmed that this is needed for SKL.

This patch makes the workaround applied to both SKL and BXT
platforms.  The referred macros are moved and one superfluous macro
(IS_BROXTON()) is another one (IS_BXT()) as well.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=112731
Suggested-by: Libin Yang <libin.yang@linux.intel.com>
Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-22 17:13:48 +01:00
Sudip Mukherjee
94a573500d ALSA: mts64: use new parport device model
Modify mts64 driver to use the new parallel port device model.
The advantage of using the device model is that the driver gets binded
to the hardware, we get the feature of hotplug, we can bind/unbind the
driver at runtime.
The changes are in the way the driver gets registered with the parallel
port subsystem and the temporary device to probe mts64 card is removed
and mts64_probe() is used in the probe callback.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-22 15:01:43 +01:00
Koro Chen
0f83f9296d ASoC: mediatek: Add machine driver for ALC5650 codec
This is the DPCM based machine driver with rt5650

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Koro Chen <koro.chen@mediatek.com>
Signed-off-by: PC Liao <pc.liao@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-22 20:12:23 +09:00
Mark Brown
8174b35f1d Linux 4.5-rc5
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Merge tag 'v4.5-rc5' into asoc-mtk

Linux 4.5-rc5
2016-02-22 20:12:13 +09:00
Sugar Zhang
6049af00fc ASoC: rt5640: add master clock handling for rt5640
enable/disable master clock when codec is active or not.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-22 20:05:21 +09:00
Sugar Zhang
ea2e5b96bd ASoC: rockchip: i2s: add default values for registers
this patch add default values for registers according description from TRM.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-22 20:04:45 +09:00
Mengdong Lin
b6b6e4d670 ASoC: topology: Fix setting of stream rates, rate_min and rate_max
Directly set a stream's rates, rate_min and rate_max from the topology
info. Also define set_stream_info to wrap setting of the stream info.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-22 19:40:36 +09:00
Sudip Mukherjee
513cb31120 ASoC: fix memory leak
If dai_link is already bound then we just returned and leaked rtd and
rtd->codec_dais which were allocated by soc_new_pcm_runtime(). We do not
need this newly allocated rtd to check if dai_link is already binded. Lets
check first if it is already binded before allocating this memory.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-22 19:40:06 +09:00
Sudip Mukherjee
3375cbe420 ASoC: topology: fix build warning
We are getting build warning about:
sound/soc/soc-topology.c:249:31: warning: 'get_dobj_type' defined but
not used

commit 64527e8a3529 has removed the only caller of get_dobj_type() but
missed to remove the function which is now unused. And after removing
get_dobj_type() we do not have any use of get_dobj_mixer_type().

Fixes: 64527e8a3529 ("ASoC: topology: Add FE DAIs dynamically")
CC: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-22 19:38:50 +09:00
Jianqun Xu
255edcdfab ASoC: rockchip: add bindings for rk3399 i2s
Add devicetree bindings for i2s controller found on rk3399
processors from rockchip.

It's helpful to add full set of compatible strings for serials
of Rockchip SoCs (rk3066, rk3188, rk3288, rk3399).

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-22 19:09:37 +09:00
Alan Cox
edd7ea2d54 ASoC: Intel: Skylake: remove bogus comparison of an array with NULL
dfw_ac->params is an array not a pointer. It will never be NULL. The check
on ac->max appears sufficient.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-22 13:45:55 +09:00
Maciej S. Szmigiero
6139b1b184 ASoC: fsl_ssi: remove explicit register defaults
There is no guarantee that on fsl_ssi module load
SSI registers will have their power-on-reset values.

In fact, if the driver is reloaded the values in
registers will be whatever they were set to previously.

However, the cache needs to be fully populated at probe
time to avoid non-atomic allocations during register
access.

Special case here is imx21-class SSI, since
according to datasheet it don't have SACC{ST,EN,DIS}
regs.

This fixes hard lockup on fsl_ssi module reload,
at least in AC'97 mode.

Fixes: 05cf237972fe ("ASoC: fsl_ssi: Add driver suspend and resume to support MEGA Fast")
Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Tested-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-22 12:02:47 +09:00
Fabio Estevam
56e5fd8feb ASoC: fsl_ssi: Go back to explicit register defaults
Commit 5c408fee2546 ("ASoC: fsl_ssi: remove explicit register defaults")
causes the driver to fail to probe:

fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
fsl-ssi-dai 2028000.ssi: Failed to init register map
fsl-ssi-dai: probe of 2028000.ssi failed with error -22

, so revert this commit.

Reported-by: Mika Penttilä <mika.penttila@nextfour.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-22 12:00:03 +09:00
Lukas Wunner
c3a900581e ALSA: hda - Use acpi_dev_present()
Use shiny new acpi_dev_present() and remove all the boilerplate
to search for a particular ACPI device. No functional change.
Cf. 2d12b6b381ba ("ACPI / utils: Add acpi_dev_present()").

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-21 09:16:00 +01:00
Axel Lin
250a99e70b ASoC: max9867: Constify max9867_reg and max9867_regmap
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: anish kumar <yesanishhere@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-21 03:09:54 +09:00
Axel Lin
1b36e4a2ab ASoC: max9867: Make max9867_i2c_id NULL terminated
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: anish kumar <yesanishhere@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-21 03:09:51 +09:00
Axel Lin
ee06b6f067 ASoC: max9867: Add CONFIG_SND_SOC_MAX9867 to build
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: anish kumar <yesanishhere@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-21 03:09:39 +09:00
Axel Lin
e354d86e55 ASoC: max98926: Constify max98926_reg and max98926_regmap
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: anish kumar <yesanishhere@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-21 03:08:50 +09:00
Charles Keepax
4f8ea6d759 ASoC: wm_adsp: wm_coeff_{read|write}_control should use passed length
wm_coeff_{read|write}_control were using the control length rather than
the length parameter passed to them. This is not causing any issues as
the two values are currently always the same, but this needs fixed to
allow future improvements.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-21 03:08:19 +09:00
Charles Keepax
7d00cd975a ASoC: wm_adsp: Fixup some odd line wrapping
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-21 03:08:19 +09:00
Charles Keepax
cc815c4b86 ASoC: wm_adsp: Explicitly set the control access flags in all cases
In the case where the firmware does not tell us the access flags for the
control, we let ALSA select a default (READWRITE). But really we should
be applying the volatile flag in this case, as we will read the control
from the DSP if it is on in this case. This patch explicitly sets the
access flags in all cases.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-21 03:08:19 +09:00
Charles Keepax
c7dae7c4c6 ASoC: wm_adsp: Avoid narrow race condition on compr pointer
There is a very small window between then wm_adsp_compr_free gets call
and when the DSP is actually powered down. If we get an IRQ from the DSP
in this window then the wm_adsp_compr pointer will be NULL. This patch
adds a check for this into the IRQ handler to avoid any issues when this
happens.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-21 03:08:19 +09:00
Takashi Sakamoto
99d7355914 ALSA: fireworks: serialize transactions to update connections at bus reset
In IEC 61883-1, at bus-reset, applications can continue isochronous
streaming by updating connections. In ALSA fireworks driver, the
operation is executed in 'update' handler for bus driver.

The connection resources are also changed in process contexts of PCM/MIDI
applications. Therefore, bus-reset handling has race condition
against connection. Current ALSA fireworks driver has a bug for the
condition.

This commit fixes the bug, by expand critical section with mutex. As a
result, connection updating operation in bus-reset handler and connection
changing operation in process context are serialized.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-20 15:46:38 +01:00
Takashi Sakamoto
3800e6f944 ALSA: bebob: give up updating streams at bus reset handler
DM1000/DM1100/DM1500 chipsets transfer packets with discontinue value in
'dbc' field of CIP header. For ALSA bebob driver, this makes its bus-reset
handler meaningless, because the discontinuity is detected quite earlier
than executing the handler.

This commit gives up updating streams at the bus reset handler.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-20 15:45:54 +01:00
Takashi Sakamoto
4fd6c6c729 ALSA: bebob: change type of substream counter from atomic_t to unsigned int
The counter is incremented/decremented in critical section protected with
mutex. Therefore, no need to use atomic_t.

This commit changes the type to unsigned int.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-20 15:45:38 +01:00
Takashi Sakamoto
2a71e70166 ALSA: bebob: move mutex from function callee to callers
Currently, critical section is protected by mutex in functions of
fireworks_stream.c. Callers increments/decrements substreams counter
before calling the functions. Moving mutex to the callers code allows
to change type of the substream counter from atomic_t to unsigned int.

This commit is a preparation for obsoleting usage of atomic_t for
substream counter.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-20 15:45:25 +01:00
Takashi Sakamoto
14a37ac1bf ALSA: bebob: simplify bus-reset handling
At bus-reset, DM1000/DM1100/DM1500 chipsets transfer packets with
discontinuous value in 'dbc' field of CIP header. In this case, packet
streaming layer in firewire-lib module stops streaming and set XRUN to PCM
substream.

In ALSA, PCM applications are notified the XRUN status by the return value
of ALSA PCM interface. They can recover this state by executing
snd_pcm_prepare(), then PCM drivers' prepare handler is called, and start
new PCM substream. For ALSA BeBoB driver, the handler establishes new
connections and start new AMDTP streaming.

Unfortunately, neither the PCM applications nor the driver know the reason
of XRUN. The driver gets to know the reason when update handler is called
by IEEE 1394 bus driver. As long as I tested, the order of below events are
not fixed:
 * Detecting packet discontinuity in tasklet context of OHCI 1394 driver
 * Calling prepare handler in process context of ALSA PCM application
 * Calling update handler in kthread context of IEEE 1394 bus driver

The unpredictable order is disadvantage for the driver to be compliant to
CMP. In IEC 61883-1, new CMP establish operations should be done 1 sec
(isoc_resource_delay) after bus-reset. Within 1 sec, CMP restore
operations are allowed. For this reason, in former commit ('b6bc812327aa:
ALSA: bebob/firewire-lib: Add a quirk for discontinuity at bus reset'),
the process context is forced to wait for executing update handler. The
process context wait for bus-reset up to 1 sec. This commit solves the
issue, while causes more disadvantages. For PCM applications, calling
snd_pcm_prepare() for recovering XRUN state takes more time and the driver
got a bit complicated code, while the recovery is not always successful.

As long as I tested, DM1000/DM1100/DM1500 and BeBoB firmware can allow
drivers to establish new connections just after bus reset. Furthermore,
any FCP transactions are handled correctly. Therefore, the driver don't
need to wait for bus reset handler for starting new streaming.

This commit removes the codes to reduce maintenance cost.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-20 15:45:15 +01:00
Marcus Cooper
f8260afa44 ASoC: sunxi: Add support for the SPDIF block
The sun4i, sun5i and sun7i SoC families have an SPDIF
block which is capable of playback and capture.

This patch enables the playback of this block for
the sun4i families.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-20 01:25:51 +09:00