24819 Commits

Author SHA1 Message Date
Andy Shevchenko
3a14c66d43 dmaengine: dw: pass platform data via struct dw_dma_chip
We pass struct dw_dma_chip to dw_dma_probe() anyway, thus we may use it to
pass a platform data as well.

While here, constify the source of the platform data.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-05-02 15:31:05 +05:30
Jim Lodes
823ecdd684 ASoC: davinci-mcasp: Fix overwriting of ahclkx
The mcasp davinci_mcasp_set_dai_fmt function was overriding ahclkx
input/output status that had already been set by the
davinci_mcasp_set_sysclk function. This commit removes clearing
of the ahclkx input/output status from davinci_mcasp_set_dai_fmt.

Signed-off-by: Jim Lodes <jim.lodes@garmin.com>
Signed-off-by: J.D. Schroeder <jay.schroeder@garmin.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-29 18:19:14 +01:00
Takashi Iwai
2d2c038a99 ALSA: usb-audio: Quirk for yet another Phoenix Audio devices (v2)
Phoenix Audio MT202pcs (1de7:0114) and MT202exe (1de7:0013) need the
same workaround as TMX320 for avoiding the firmware bug.  It fixes the
frequent error about the sample rate inquiries and the slow device
probe as consequence.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=117321
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-04-29 13:40:25 +02:00
Caleb Crome
3cc6185bcc ASoC: fsl_ssi: add CCSR_SSI_SOR to volatile register list
The CCSR_SSI_SOR is a register that clears the TX and/or the RX fifo
on the i.MX SSI port.  The fsl_ssi_trigger writes this register in
order to clear the fifo at trigger time.

However, since the CCSR_SSI_SOR register is not in the volatile list,
the caching mechanism prevented the register write in the trigger
function.  This caused the fifo to not be cleared (because the value
was unchanged from the last time the register was written), and thus
causes the channels in both TDM or simple I2S mode to slip and be in
the wrong time slots on SSI restart.

This has gone unnoticed for so long because with simple stereo mode,
the consequence is that left and right are swapped, which isn't that
noticeable.  However, it's catestrophic in some systems that
require the channels to be in the right slots.

Signed-off-by: Caleb Crome <caleb@crome.org>
Suggested-by: Arnaud Mouiche <arnaud.mouiche@invoxia.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-29 11:44:53 +01:00
Takashi Iwai
57dd5414a0 ALSA: usb-audio: Limit retrying sample rate reads
There are many USB audio devices with buggy firmware that don't react
with the sample rate reading properly.  This often results in the
flood of error messages and slowing down the operation.

The sample rate read back is basically only for confirming the sample
rate setup, and it's not critically important.  As a compromise, in
this patch, we stop the sample rate read back once when the device
gives errors more than tolerance (twice, as of now).  This should
improve most of error cases while we still can catch the firmware
bugginess.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-04-29 11:49:04 +02:00
Subhransu S. Prusty
ea5a137d0f ASoC: Intel: Skylake: Update channel map based on runtime params
Default channel map is set for 2 channels. Fix the channel map
based on runtime params to support multichannel.

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>
2016-04-28 18:49:24 +01:00
Subhransu S. Prusty
7e12dc87ac ASoC: Intel: Skylake: Add multichannel support for HDMI
Channel max is changed to 8 from stereo to support multichannel
capability for HDMI devices.

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>
2016-04-28 18:49:24 +01:00
Subhransu S. Prusty
2889099eb8 ASoC: hdac_hdmi: Register chmap controls and ops
With this patch, chmap controls are created and user space can
set the channel map.

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>
2016-04-28 18:49:24 +01:00
Subhransu S. Prusty
46ed1a27fb ASoC: Intel: boards: Update skl_nau88l25_ssm4567 driver to support chmap
HDMI registers channel map controls per PCM. As PCMs are not
registered during dai_link init callback, store the pcm ids and
codec DAIs during this init callback.

Register for late probe and call the jack_init API which also
registers channel map in the late probe callback handler.

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>
2016-04-28 18:49:24 +01:00
Subhransu S. Prusty
0d425b4f90 ASoC: Intel: boards: Update skl_nau88l25_max98357a driver to support chmap
HDMI registers channel map controls per PCM. As PCMs are not
registered during dai_link init callback, store the pcm ids and
codec DAIs during this init callback.

Register for late probe and call the jack_init API which also
registers channel map in the late probe callback handler.

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>
2016-04-28 18:49:24 +01:00
Subhransu S. Prusty
1a10612fc3 ASoC: skl_rt286: Fix to support hdmi channel map support
HDMI registers channel map controls per PCM. As PCMs are not
registered during dai_link init callback, store the pcm ids and
codec DAIs during this init callback.

Register for late probe and call the jack_init API which also
registers channel map in the late probe callback handler.

The patch following the machine driver changes adds the channel
map control in the hdac_hdmi codec driver.

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>
2016-04-28 18:49:24 +01:00
Subhransu S. Prusty
bcced70478 ASoC: hdac_hdmi: Add multichannel support
To support multichannel hdac hdmi driver registers with HDA
channel map framework. Channel count and channel slot verbs are
programmed by using the chmap helpers/ops.  The channel
allocation is then programmed in the audio infoframe as per CEA
spec.

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>
2016-04-28 18:49:24 +01:00
Subhransu S. Prusty
b7756edeb7 ASoC: hdac_hdmi: parse eld for channel map capability
This patch parses ELD speaker allocation data block to find
sink's chmap capability.

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>
2016-04-28 18:49:24 +01:00
Mark Brown
6a5ea5c5d1 Merge branch 'topic/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-hdmi 2016-04-28 18:49:06 +01:00
Subhransu S. Prusty
9fc7c862e7 ALSA: hda - add helper to get channels from cap bits
This helper is copied from legacy hda driver.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-28 18:45:26 +01:00
anish kumar
ca2cd6bc66 ASoC: Add max98371 codec driver
Signed-off-by: anish kumar <yesanishhere@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-28 18:16:04 +01:00
Kuninori Morimoto
1a5658c213 ASoC: rsnd: count .probe/.remove for rsnd_mod_call()
Current rsnd_mod_call is counting its calling count to avoid unbalanced
function pair calling for error cases (ex init <-> quit).
SSI parent is now controlled as "mod" on current rsnd driver. Because of
this reason, SSI .remove function will be called twice if it was used as
SSI parent when user tried unbind. But probe/remove pair were not
counted. This patch counts probe/remove functions to avoid it.
Special thans Hiep

Reported-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-28 10:46:47 +01:00
Matthias Reichl
beff053c0e ASoC: bcm2835: Add S16_LE support via packed DMA transfers
The bcm2835-i2s driver already has support for the S16_LE format but
that format hasn't been made available because dmaengine_pcm didn't
support packed data transfers.

bcm2835-i2s needs 16-bit left+right channel data to be packed into
a 32-bit word, the FIFO register is 32-bit only and doesn't support
16-bit access.

Now that dmaengine_pcm supports packed transfers the format can
be made available by setting the SND_DMAENGINE_PCM_DAI_FLAG_PACK flag.

No further configuration is necessary:
- snd_dmaengine_dai_dma_data.addr_width is already set to
  DMA_SLAVE_BUSWIDTH_4_BYTES to force 32-bit DMA transfers
- dmaengine_pcm will pick up the S16_LE format from the DAI
  configuration and make it available since it's no longer
  masked out due to the PACK flag.
- there are no further corner cases to catch in hw_params,
  since the channel count is fixed at 2 we always have two
  16-bit stereo samples that can be transferred via 32-bit DMA

Signed-off-by: Matthias Reichl <hias@horus.com>
Tested-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-27 17:35:53 +01:00
Mark Brown
cc70666c25 Merge branch 'topic/dmaengine' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-bcm2835 2016-04-27 17:35:42 +01:00
Matthias Reichl
73fe01cfb3 ASoC: dmaengine_pcm: Add support for packed transfers
dmaengine_pcm currently only supports setups where FIFO reads/writes
correspond to exactly one sample, eg 16-bit sample data is transferred
via 16-bit FIFO accesses, 32-bit data via 32-bit accesses.

This patch adds support for setups with fixed width FIFOs where
multiple samples are packed into a larger word.

For example setups with a 32-bit wide FIFO register that expect
16-bit sample transfers to be done with the left+right sample data
packed into a 32-bit word.

Support for packed transfers is controlled via the
SND_DMAENGINE_PCM_DAI_FLAG_PACK flag in snd_dmaengine_dai_dma_data.flags

If this flag is set dmaengine_pcm doesn't put any restriction on the
supported formats and sets the DMA transfer width to undefined.

This means control over the constraints is now transferred to the DAI
driver and it's responsible to provide proper configuration and
check for possible corner cases that aren't handled by the ALSA core.

Signed-off-by: Matthias Reichl <hias@horus.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-27 17:34:11 +01:00
Mengdong Lin
06eb49f72f ASoC: topology: Check size mismatch of ABI objects before parsing
If size mismatch of manifest, ABI headers or elements is found, stop
parsing topology info and return the error.

New fields may be append to the tail of ABI objects which will cause
object size to increase. If user space and kernel use different versions
of ABI, size mismatch will be detected here.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-27 17:32:30 +01:00
Mengdong Lin
7de76b621f ASoC: topology: Check failure to create a widget
Stop loading topology info if error happens when creating a widget.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-27 17:32:30 +01:00
Andreas Dannenberg
bd023ada36 ASoC: add support for TAS5720 digital amplifier
The Texas Instruments TAS5720L/M device is a high-efficiency mono
Class-D audio power amplifier optimized for high transient power
capability to use the dynamic power headroom of small loudspeakers.
Its digital time division multiplexed (TDM) interface enables up to
16 devices to share the same bus.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-27 16:48:53 +01:00
Takashi Iwai
af9cc93c0d ASoC: Fixes for v4.6
This is a fairly large collection of fixes but almost all driver
 specific ones, especially to the new Intel drivers which have had a lot
 of recent development.  The one core fix is a change to the debugfs code
 to avoid crashes in some relatively unusual configurations.
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Merge tag 'asoc-fix-v4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v4.6

This is a fairly large collection of fixes but almost all driver
specific ones, especially to the new Intel drivers which have had a lot
of recent development.  The one core fix is a change to the debugfs code
to avoid crashes in some relatively unusual configurations.
2016-04-27 17:30:49 +02:00
Richard Fitzgerald
56574d541f ASoC: wm_adsp: factor out freeing of alg regions
Add a function to delete and free the contents of the alg_regions list.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-27 16:21:23 +01:00
Richard Fitzgerald
401cf1466a ASoC: arizona: call wm_adsp2_remove when codec driver is removed
Ensure that the wm_adsp driver cleans up when the codec driver
is removed.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-27 16:21:23 +01:00
Richard Fitzgerald
66225e98b9 ASoC: wm_adsp: free memory when unloaded or closed
The patch adds a wm_adsp2_remove() function to ensure that memory
is freed when the driver is unloaded or shut down.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-27 16:21:23 +01:00
Peter Rosin
80833ff0ee ASoC: atmel_ssc_dai: read DSP mode A data on rising edges of bclk
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-27 14:47:41 +01:00
Mark Brown
8c0f551004 Merge remote-tracking branches 'asoc/fix/rt5640' and 'asoc/fix/wm8962' into asoc-linus 2016-04-26 19:25:18 +01:00
Mark Brown
78cfca32ca Merge remote-tracking branches 'asoc/fix/arizona', 'asoc/fix/cs35l32', 'asoc/fix/hdac', 'asoc/fix/nau8825' and 'asoc/fix/rt5616' into asoc-linus 2016-04-26 19:25:15 +01:00
Mark Brown
e408057767 Merge remote-tracking branch 'asoc/fix/intel' into asoc-linus 2016-04-26 19:25:14 +01:00
Mark Brown
f179f3f8a9 Merge remote-tracking branch 'asoc/fix/dapm' into asoc-linus 2016-04-26 19:25:13 +01:00
Richard Fitzgerald
2ab8e744a4 ASoC: arizona: No need to update_bits when writing AEC clock control
The bits in the ARIZONA_CLOCK_CONTROL register only respond to writes of
a '1', a write of '0' is ignored. So there's no need to use update_bits.
We can do a simple write to set bits.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-26 17:37:30 +01:00
Jim Lodes
989ff7754a ASoC: omap-pcm: Initialize DMA configuration
Initialize the dma_slave_config for PCM DMA transfers,
instead of leaving it uninitialized. Keeps previous data on
the stack from giving us invalid values in uninitialized
members of the config structure.

Signed-off-by: Jim Lodes <jim.lodes@garmin.com>
Signed-off-by: J.D. Schroeder <jay.schroeder@garmin.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Reviewed-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-26 16:26:59 +01:00
Linus Walleij
f7cb5120c4 ASoC: ac97: use gpiochip data pointer
This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: alsa-devel@alsa-project.org
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-26 15:36:57 +02:00
Linus Walleij
c2aea142af ASoC: wm8996: use gpiochip data pointer
This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: alsa-devel@alsa-project.org
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-26 15:36:57 +02:00
Linus Walleij
f42b6f5800 ASoC: wm8962: use gpiochip data pointer
This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: alsa-devel@alsa-project.org
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-26 15:36:40 +02:00
Linus Walleij
8f4160661f ASoC: wm8903: use gpiochip data pointer
This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: alsa-devel@alsa-project.org
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-26 15:36:40 +02:00
Linus Walleij
db1d127053 ASoC: wm5100: use gpiochip data pointer
This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: alsa-devel@alsa-project.org
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-26 15:36:19 +02:00
Linus Walleij
1490036345 ASoC: rt5677: use gpiochip data pointer
This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Cc: Bard Liao <bardliao@realtek.com>
Cc: Oder Chiou <oder_chiou@realtek.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: alsa-devel@alsa-project.org
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-26 15:36:18 +02:00
Javier Martinez Canillas
de06f22f71 ASoC: cs42l56: Use IS_ENABLED() instead of checking for built-in or module
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either
built-in or as a module, use that macro instead of open coding the same.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-26 12:07:43 +01:00
PC Liao
27becea06e ASoC: mediatek: HDMI audio LR channel swapped
Because LRCK of TDM use High to Low as default setting, this patch
changes the TDM setting to inverse LRCK.

Signed-off-by: PC Liao <pc.liao@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-26 11:25:51 +01:00
Bard Liao
9ff49ce475 ASoC: rt298: fix capture doesn't work at some cases
RT298_CBJ_CTRL1(0x4f) bit 10 is needed for headset capture. It
will be turned off when "VREF" widget is on and be turned on when
bias level is ON. It is odd. And if "VREF" is turned on in bias
level is ON, RT298_CBJ_CTRL1(0x4f) bit 10 will be turned off.
This patch move the bit control from rt298_set_bias_level and
rt298_vref_event to rt298_jack_detect. So it will be turned on
once a jack is plugged in.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-26 11:11:08 +01:00
Bard Liao
3c9e014c44 ASoC: rt298: reset AD dilter is there is no MCLK
rt298 need to reset AD filter and the ADC settings will take effort.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-26 11:11:08 +01:00
Takashi Iwai
a33d595996 Merge branch 'for-linus' into for-next
For taking back the recent change of HDA HDMI fixes for i915 HSW/BDW.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-04-26 10:12:46 +02:00
Takashi Iwai
bb03ed2163 ALSA: hda - Update BCLK also at hotplug for i915 HSW/BDW
The recent bug report suggests that BCLK setup for i915 HSW/BDW needs
to be updated at each HDMI hotplug, not only at initialization and
resume.  That is, we need to update HSW_EM4 and HSW_EM5 registers at
ELD notification, too.  Otherwise the HDMI audio may be out of sync
and played in a wrong pitch.

However, the HDA codec driver has no access to the controller
registers, and currently the code managing these registers is in
hda_intel.c, i.e. local to the controller driver.  For allowing the
explicit BCLK update from the codec driver, as in this patch, the
former haswell_set_bclk() in hda_intel.c is moved to hdac_i915.c and
exposed as snd_hdac_i915_set_bclk().  This is called from both the HDA
controller driver and intel_pin_eld_notify() in HDMI codec driver.

Along with this change, snd_hdac_get_display_clk() gets dropped as
it's no longer used.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91410
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-04-26 10:11:11 +02:00
Conrad Kostecki
037e119738 ALSA: hda - Add dock support for ThinkPad X260
Fixes audio output on a ThinkPad X260, when using Lenovo CES 2013
docking station series (basic, pro, ultra).

Signed-off-by: Conrad Kostecki <ck+linuxkernel@bl4ckb0x.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-04-26 10:10:06 +02:00
Takashi Iwai
58a8738cfc ALSA: au88x0: Fix overlapped PCM pointer
au88x0 hardware seems returning the current pointer at the buffer
boundary instead of going back to zero.  This results in spewing
warnings from PCM core.

This patch corrects the return value from the pointer callback within
the proper value range, just returning zero if the position is equal
or above the buffer size.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-04-26 09:55:42 +02:00
Takashi Iwai
d2c5cf88d5 ALSA: hrtimer: Handle start/stop more properly
This patch tries to address the still remaining issues in ALSA hrtimer
driver:
- Spurious use-after-free was detected in hrtimer callback
- Incorrect rescheduling due to delayed start
- WARN_ON() is triggered in hrtimer_forward() invoked in hrtimer
  callback

The first issue happens only when the new timer is scheduled even
while hrtimer is being closed.  It's related with the second and third
items; since ALSA timer core invokes hw.start callback during hrtimer
interrupt, this may result in the explicit call of hrtimer_start().

Also, the similar problem is seen for the stop; ALSA timer core
invokes hw.stop callback even in the hrtimer handler, too.  Since we
must not call the synced hrtimer_cancel() in such a context, it's just
a hrtimer_try_to_cancel() call that doesn't properly work.

Another culprit of the second and third items is the call of
hrtimer_forward_now() before snd_timer_interrupt().  The timer->stick
value may change during snd_timer_interrupt() call, but this
possibility is ignored completely.

For covering these subtle and messy issues, the following changes have
been done in this patch:
- A new flag, in_callback, is introduced in the private data to
  indicate that the hrtimer handler is being processed.
- Both start and stop callbacks skip when called from (during)
  in_callback flag.
- The hrtimer handler returns properly HRTIMER_RESTART and NORESTART
  depending on the running state now.
- The hrtimer handler reprograms the expiry properly after
  snd_timer_interrupt() call, instead of before.
- The close callback clears running flag and sets in_callback flag
  to block any further start/stop calls.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-04-26 09:34:40 +02:00
Matthias Reichl
60507fe191 ASoC: bcm2835: setup clock only if CPU is clock master
We only need to enable the clock if we are a clock master.

Code ported from bcm2708-i2s driver in Raspberry Pi tree.
Original work by Zoltan Szenczi.

Signed-off-by: Matthias Reichl <hias@horus.com>
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-25 17:39:11 +01:00