<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-toradex.git/sound/hda, branch v6.4</title>
<subtitle>Linux kernel for Apalis and Colibri modules</subtitle>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/'/>
<entry>
<title>ALSA: hda: Fix unhandled register update during auto-suspend period</title>
<updated>2023-05-22T12:20:29+00:00</updated>
<author>
<name>Takashi Iwai</name>
<email>tiwai@suse.de</email>
</author>
<published>2023-05-18T11:35:20+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=81302b1c7c997e8a56c1c2fc63a296ebeb0cd2d0'/>
<id>81302b1c7c997e8a56c1c2fc63a296ebeb0cd2d0</id>
<content type='text'>
It's reported that the recording started right after the driver probe
doesn't work properly, and it turned out that this is related with the
codec auto-suspend.  Namely, after the probe phase, the usage count
goes zero, and the auto-suspend is programmed, but the codec is kept
still active until the auto-suspend expiration.  When an application
(e.g. alsactl) updates the mixer values at this moment, the values are
cached but not actually written.  Then, starting arecord thereafter
also results in the silence because of the missing unmute.

The root cause is the handling of "lazy update" mode; when a mixer
value is updated *after* the suspend, it should update only the cache
and exits.  At the resume, the cached value is written to the device,
in turn.  The problem is that the current code misinterprets the state
of auto-suspend as if it were already suspended.

Although we can add the check of the actual device state after
pm_runtime_get_if_in_use() for catching the missing state, this won't
suffice; the second call of regmap_update_bits_check() will skip
writing the register because the cache has been already updated by the
first call.  So we'd need fixes in two different places.

OTOH, a simpler fix is to replace pm_runtime_get_if_in_use() with
pm_runtime_get_if_active() (with ign_usage_count=true).  This change
implies that the driver takes the pm refcount if the device is still
in ACTIVE state and continues the processing.  A small caveat is that
this will leave the auto-suspend timer.  But, since the timer callback
itself checks the device state and aborts gracefully when it's active,
this won't be any substantial problem.

Long story short: we address the missing register-write problem just
by replacing the pm_runtime_*() call in snd_hda_keep_power_up().

Fixes: fc4f000bf8c0 ("ALSA: hda - Fix unexpected resume through regmap code path")
Reported-by: Amadeusz Sławiński &lt;amadeuszx.slawinski@linux.intel.com&gt;
Closes: https://lore.kernel.org/r/a7478636-af11-92ab-731c-9b13c582a70d@linux.intel.com
Suggested-by: Cezary Rojewski &lt;cezary.rojewski@intel.com&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Link: https://lore.kernel.org/r/20230518113520.15213-1-tiwai@suse.de
Signed-off-by: Takashi Iwai &lt;tiwai@suse.de&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
It's reported that the recording started right after the driver probe
doesn't work properly, and it turned out that this is related with the
codec auto-suspend.  Namely, after the probe phase, the usage count
goes zero, and the auto-suspend is programmed, but the codec is kept
still active until the auto-suspend expiration.  When an application
(e.g. alsactl) updates the mixer values at this moment, the values are
cached but not actually written.  Then, starting arecord thereafter
also results in the silence because of the missing unmute.

The root cause is the handling of "lazy update" mode; when a mixer
value is updated *after* the suspend, it should update only the cache
and exits.  At the resume, the cached value is written to the device,
in turn.  The problem is that the current code misinterprets the state
of auto-suspend as if it were already suspended.

Although we can add the check of the actual device state after
pm_runtime_get_if_in_use() for catching the missing state, this won't
suffice; the second call of regmap_update_bits_check() will skip
writing the register because the cache has been already updated by the
first call.  So we'd need fixes in two different places.

OTOH, a simpler fix is to replace pm_runtime_get_if_in_use() with
pm_runtime_get_if_active() (with ign_usage_count=true).  This change
implies that the driver takes the pm refcount if the device is still
in ACTIVE state and continues the processing.  A small caveat is that
this will leave the auto-suspend timer.  But, since the timer callback
itself checks the device state and aborts gracefully when it's active,
this won't be any substantial problem.

Long story short: we address the missing register-write problem just
by replacing the pm_runtime_*() call in snd_hda_keep_power_up().

Fixes: fc4f000bf8c0 ("ALSA: hda - Fix unexpected resume through regmap code path")
Reported-by: Amadeusz Sławiński &lt;amadeuszx.slawinski@linux.intel.com&gt;
Closes: https://lore.kernel.org/r/a7478636-af11-92ab-731c-9b13c582a70d@linux.intel.com
Suggested-by: Cezary Rojewski &lt;cezary.rojewski@intel.com&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Link: https://lore.kernel.org/r/20230518113520.15213-1-tiwai@suse.de
Signed-off-by: Takashi Iwai &lt;tiwai@suse.de&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ALSA: hda: intel-dsp-config: add MTL PCI id</title>
<updated>2023-03-08T05:37:19+00:00</updated>
<author>
<name>Bard Liao</name>
<email>yung-chuan.liao@linux.intel.com</email>
</author>
<published>2023-03-06T07:41:01+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=bbdf904b13a62bb8b1272d92a7dde082dff86fbb'/>
<id>bbdf904b13a62bb8b1272d92a7dde082dff86fbb</id>
<content type='text'>
Use SOF as default audio driver.

Signed-off-by: Bard Liao &lt;yung-chuan.liao@linux.intel.com&gt;
Reviewed-by: Gongjun Song &lt;gongjun.song@intel.com&gt;
Reviewed-by: Kai Vehmanen &lt;kai.vehmanen@linux.intel.com&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Link: https://lore.kernel.org/r/20230306074101.3906707-1-yung-chuan.liao@linux.intel.com
Signed-off-by: Takashi Iwai &lt;tiwai@suse.de&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Use SOF as default audio driver.

Signed-off-by: Bard Liao &lt;yung-chuan.liao@linux.intel.com&gt;
Reviewed-by: Gongjun Song &lt;gongjun.song@intel.com&gt;
Reviewed-by: Kai Vehmanen &lt;kai.vehmanen@linux.intel.com&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Link: https://lore.kernel.org/r/20230306074101.3906707-1-yung-chuan.liao@linux.intel.com
Signed-off-by: Takashi Iwai &lt;tiwai@suse.de&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'driver-core-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core</title>
<updated>2023-02-24T20:58:55+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2023-02-24T20:58:55+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=a93e884edf61f9debc9ca61ef9e545f0394ab666'/>
<id>a93e884edf61f9debc9ca61ef9e545f0394ab666</id>
<content type='text'>
Pull driver core updates from Greg KH:
 "Here is the large set of driver core changes for 6.3-rc1.

  There's a lot of changes this development cycle, most of the work
  falls into two different categories:

   - fw_devlink fixes and updates. This has gone through numerous review
     cycles and lots of review and testing by lots of different devices.
     Hopefully all should be good now, and Saravana will be keeping a
     watch for any potential regression on odd embedded systems.

   - driver core changes to work to make struct bus_type able to be
     moved into read-only memory (i.e. const) The recent work with Rust
     has pointed out a number of areas in the driver core where we are
     passing around and working with structures that really do not have
     to be dynamic at all, and they should be able to be read-only
     making things safer overall. This is the contuation of that work
     (started last release with kobject changes) in moving struct
     bus_type to be constant. We didn't quite make it for this release,
     but the remaining patches will be finished up for the release after
     this one, but the groundwork has been laid for this effort.

  Other than that we have in here:

   - debugfs memory leak fixes in some subsystems

   - error path cleanups and fixes for some never-able-to-be-hit
     codepaths.

   - cacheinfo rework and fixes

   - Other tiny fixes, full details are in the shortlog

  All of these have been in linux-next for a while with no reported
  problems"

[ Geert Uytterhoeven points out that that last sentence isn't true, and
  that there's a pending report that has a fix that is queued up - Linus ]

* tag 'driver-core-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (124 commits)
  debugfs: drop inline constant formatting for ERR_PTR(-ERROR)
  OPP: fix error checking in opp_migrate_dentry()
  debugfs: update comment of debugfs_rename()
  i3c: fix device.h kernel-doc warnings
  dma-mapping: no need to pass a bus_type into get_arch_dma_ops()
  driver core: class: move EXPORT_SYMBOL_GPL() lines to the correct place
  Revert "driver core: add error handling for devtmpfs_create_node()"
  Revert "devtmpfs: add debug info to handle()"
  Revert "devtmpfs: remove return value of devtmpfs_delete_node()"
  driver core: cpu: don't hand-override the uevent bus_type callback.
  devtmpfs: remove return value of devtmpfs_delete_node()
  devtmpfs: add debug info to handle()
  driver core: add error handling for devtmpfs_create_node()
  driver core: bus: update my copyright notice
  driver core: bus: add bus_get_dev_root() function
  driver core: bus: constify bus_unregister()
  driver core: bus: constify some internal functions
  driver core: bus: constify bus_get_kset()
  driver core: bus: constify bus_register/unregister_notifier()
  driver core: remove private pointer from struct bus_type
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull driver core updates from Greg KH:
 "Here is the large set of driver core changes for 6.3-rc1.

  There's a lot of changes this development cycle, most of the work
  falls into two different categories:

   - fw_devlink fixes and updates. This has gone through numerous review
     cycles and lots of review and testing by lots of different devices.
     Hopefully all should be good now, and Saravana will be keeping a
     watch for any potential regression on odd embedded systems.

   - driver core changes to work to make struct bus_type able to be
     moved into read-only memory (i.e. const) The recent work with Rust
     has pointed out a number of areas in the driver core where we are
     passing around and working with structures that really do not have
     to be dynamic at all, and they should be able to be read-only
     making things safer overall. This is the contuation of that work
     (started last release with kobject changes) in moving struct
     bus_type to be constant. We didn't quite make it for this release,
     but the remaining patches will be finished up for the release after
     this one, but the groundwork has been laid for this effort.

  Other than that we have in here:

   - debugfs memory leak fixes in some subsystems

   - error path cleanups and fixes for some never-able-to-be-hit
     codepaths.

   - cacheinfo rework and fixes

   - Other tiny fixes, full details are in the shortlog

  All of these have been in linux-next for a while with no reported
  problems"

[ Geert Uytterhoeven points out that that last sentence isn't true, and
  that there's a pending report that has a fix that is queued up - Linus ]

* tag 'driver-core-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (124 commits)
  debugfs: drop inline constant formatting for ERR_PTR(-ERROR)
  OPP: fix error checking in opp_migrate_dentry()
  debugfs: update comment of debugfs_rename()
  i3c: fix device.h kernel-doc warnings
  dma-mapping: no need to pass a bus_type into get_arch_dma_ops()
  driver core: class: move EXPORT_SYMBOL_GPL() lines to the correct place
  Revert "driver core: add error handling for devtmpfs_create_node()"
  Revert "devtmpfs: add debug info to handle()"
  Revert "devtmpfs: remove return value of devtmpfs_delete_node()"
  driver core: cpu: don't hand-override the uevent bus_type callback.
  devtmpfs: remove return value of devtmpfs_delete_node()
  devtmpfs: add debug info to handle()
  driver core: add error handling for devtmpfs_create_node()
  driver core: bus: update my copyright notice
  driver core: bus: add bus_get_dev_root() function
  driver core: bus: constify bus_unregister()
  driver core: bus: constify some internal functions
  driver core: bus: constify bus_get_kset()
  driver core: bus: constify bus_register/unregister_notifier()
  driver core: remove private pointer from struct bus_type
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>ALSA: hda: make kobj_type structure constant</title>
<updated>2023-02-11T08:37:42+00:00</updated>
<author>
<name>Thomas Weißschuh</name>
<email>linux@weissschuh.net</email>
</author>
<published>2023-02-11T03:33:53+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=aacdac35b906e476b175a8ffc057165eca563076'/>
<id>aacdac35b906e476b175a8ffc057165eca563076</id>
<content type='text'>
Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.")
the driver core allows the usage of const struct kobj_type.

Take advantage of this to constify the structure definition to prevent
modification at runtime.

Signed-off-by: Thomas Weißschuh &lt;linux@weissschuh.net&gt;
Link: https://lore.kernel.org/r/20230211-kobj_type-sound-v1-1-17107ceb25b7@weissschuh.net
Signed-off-by: Takashi Iwai &lt;tiwai@suse.de&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.")
the driver core allows the usage of const struct kobj_type.

Take advantage of this to constify the structure definition to prevent
modification at runtime.

Signed-off-by: Thomas Weißschuh &lt;linux@weissschuh.net&gt;
Link: https://lore.kernel.org/r/20230211-kobj_type-sound-v1-1-17107ceb25b7@weissschuh.net
Signed-off-by: Takashi Iwai &lt;tiwai@suse.de&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ALSA: hda: remove redundant variable in snd_hdac_stream_start()</title>
<updated>2023-02-10T09:06:50+00:00</updated>
<author>
<name>Zhang Yiqun</name>
<email>zhangyiqun@phytium.com.cn</email>
</author>
<published>2023-02-09T12:17:23+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=4fe20d62842eaa858267df1535f3e2bd39275c4a'/>
<id>4fe20d62842eaa858267df1535f3e2bd39275c4a</id>
<content type='text'>
This 2nd variables are all set as true in treewide. So I think
it can be removed for easy understanding.

Signed-off-by: Zhang Yiqun &lt;zhangyiqun@phytium.com.cn&gt;
Acked-by: Mark Brown &lt;broonie@kernel.org&gt;
Reviewed-by: Pierre-Louis Bossart &lt;pierre-louis.bossart@linux.intel.com&gt;
Link: https://lore.kernel.org/r/20230209121723.14328-1-zhangyiqun@phytium.com.cn
Signed-off-by: Takashi Iwai &lt;tiwai@suse.de&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This 2nd variables are all set as true in treewide. So I think
it can be removed for easy understanding.

Signed-off-by: Zhang Yiqun &lt;zhangyiqun@phytium.com.cn&gt;
Acked-by: Mark Brown &lt;broonie@kernel.org&gt;
Reviewed-by: Pierre-Louis Bossart &lt;pierre-louis.bossart@linux.intel.com&gt;
Link: https://lore.kernel.org/r/20230209121723.14328-1-zhangyiqun@phytium.com.cn
Signed-off-by: Takashi Iwai &lt;tiwai@suse.de&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>driver core: make struct bus_type.uevent() take a const *</title>
<updated>2023-01-27T12:45:52+00:00</updated>
<author>
<name>Greg Kroah-Hartman</name>
<email>gregkh@linuxfoundation.org</email>
</author>
<published>2023-01-11T11:30:17+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=2a81ada32f0e584fc0c943e0d3a8c9f4fae411d6'/>
<id>2a81ada32f0e584fc0c943e0d3a8c9f4fae411d6</id>
<content type='text'>
The uevent() callback in struct bus_type should not be modifying the
device that is passed into it, so mark it as a const * and propagate the
function signature changes out into all relevant subsystems that use
this callback.

Acked-by: Rafael J. Wysocki &lt;rafael@kernel.org&gt;
Acked-by: Hans de Goede &lt;hdegoede@redhat.com&gt;
Link: https://lore.kernel.org/r/20230111113018.459199-16-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The uevent() callback in struct bus_type should not be modifying the
device that is passed into it, so mark it as a const * and propagate the
function signature changes out into all relevant subsystems that use
this callback.

Acked-by: Rafael J. Wysocki &lt;rafael@kernel.org&gt;
Acked-by: Hans de Goede &lt;hdegoede@redhat.com&gt;
Link: https://lore.kernel.org/r/20230111113018.459199-16-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ALSA: hda: Error out if invalid stream is being setup</title>
<updated>2022-12-09T08:54:53+00:00</updated>
<author>
<name>Cezary Rojewski</name>
<email>cezary.rojewski@intel.com</email>
</author>
<published>2022-12-08T14:26:35+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=084ca216931ab9313e6fb862c2ec9ec5e0702cd5'/>
<id>084ca216931ab9313e6fb862c2ec9ec5e0702cd5</id>
<content type='text'>
Scenario when snd_hdac_stream_setup_periods() receives an instance of
struct hdac_stream with neither -&gt;substream nor -&gt;cstream initialized is
invalid.

Simultaneously addresses "uninitialized symbol 'dmab'" error reported by
Smatch.

Fixes: 3e9582267e3a ("ALSA: hda: Interrupt servicing and BDL setup for compress streams")
Signed-off-by: Cezary Rojewski &lt;cezary.rojewski@intel.com&gt;
Link: https://lore.kernel.org/r/20221208142635.1514944-1-cezary.rojewski@intel.com
Signed-off-by: Takashi Iwai &lt;tiwai@suse.de&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Scenario when snd_hdac_stream_setup_periods() receives an instance of
struct hdac_stream with neither -&gt;substream nor -&gt;cstream initialized is
invalid.

Simultaneously addresses "uninitialized symbol 'dmab'" error reported by
Smatch.

Fixes: 3e9582267e3a ("ALSA: hda: Interrupt servicing and BDL setup for compress streams")
Signed-off-by: Cezary Rojewski &lt;cezary.rojewski@intel.com&gt;
Link: https://lore.kernel.org/r/20221208142635.1514944-1-cezary.rojewski@intel.com
Signed-off-by: Takashi Iwai &lt;tiwai@suse.de&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ALSA: hda: Interrupt servicing and BDL setup for compress streams</title>
<updated>2022-12-05T14:05:20+00:00</updated>
<author>
<name>Cezary Rojewski</name>
<email>cezary.rojewski@intel.com</email>
</author>
<published>2022-12-02T15:28:28+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=3e9582267e3a06bfd9622dbd2304a8cfac977b43'/>
<id>3e9582267e3a06bfd9622dbd2304a8cfac977b43</id>
<content type='text'>
Account for compress streams when receiving and servicing buffer
completed interrupts. In case of compress stream enlisting hdac_stream
for data transfer, setup BDL entries much like it is the case for PCM
streams.

Signed-off-by: Divya Prakash &lt;divya1.prakash@intel.com&gt;
Signed-off-by: Cezary Rojewski &lt;cezary.rojewski@intel.com&gt;
Acked-by: Takashi Iwai &lt;tiwai@suse.de&gt;
Link: https://lore.kernel.org/r/20221202152841.672536-4-cezary.rojewski@intel.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Account for compress streams when receiving and servicing buffer
completed interrupts. In case of compress stream enlisting hdac_stream
for data transfer, setup BDL entries much like it is the case for PCM
streams.

Signed-off-by: Divya Prakash &lt;divya1.prakash@intel.com&gt;
Signed-off-by: Cezary Rojewski &lt;cezary.rojewski@intel.com&gt;
Acked-by: Takashi Iwai &lt;tiwai@suse.de&gt;
Link: https://lore.kernel.org/r/20221202152841.672536-4-cezary.rojewski@intel.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ALSA: hda: Prepare for compress stream support</title>
<updated>2022-12-05T14:05:19+00:00</updated>
<author>
<name>Cezary Rojewski</name>
<email>cezary.rojewski@intel.com</email>
</author>
<published>2022-12-02T15:28:27+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=f6b1254664a0a15c8bbe0a17b2c86840aa38d3d7'/>
<id>f6b1254664a0a15c8bbe0a17b2c86840aa38d3d7</id>
<content type='text'>
Before introducing compress specific changes, adjust BDL and parameters
setup functions so these are not tightly coupled with PCM streams.

Signed-off-by: Cezary Rojewski &lt;cezary.rojewski@intel.com&gt;
Acked-by: Takashi Iwai &lt;tiwai@suse.de&gt;
Link: https://lore.kernel.org/r/20221202152841.672536-3-cezary.rojewski@intel.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Before introducing compress specific changes, adjust BDL and parameters
setup functions so these are not tightly coupled with PCM streams.

Signed-off-by: Cezary Rojewski &lt;cezary.rojewski@intel.com&gt;
Acked-by: Takashi Iwai &lt;tiwai@suse.de&gt;
Link: https://lore.kernel.org/r/20221202152841.672536-3-cezary.rojewski@intel.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ALSA: hda: Allow for compress stream to hdac_ext_stream assignment</title>
<updated>2022-12-05T14:05:18+00:00</updated>
<author>
<name>Cezary Rojewski</name>
<email>cezary.rojewski@intel.com</email>
</author>
<published>2022-12-02T15:28:26+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=97d73d978271ade27fc751ad606f23c1c4c43678'/>
<id>97d73d978271ade27fc751ad606f23c1c4c43678</id>
<content type='text'>
Currently only PCM streams can enlist hdac_stream for their data
transfer. Add cstream field to hdac_ext_stream to expose possibility of
compress stream assignment in place of PCM one.
Limited to HOST-type only as there no other users on the horizon.

Signed-off-by: Cezary Rojewski &lt;cezary.rojewski@intel.com&gt;
Acked-by: Takashi Iwai &lt;tiwai@suse.de&gt;
Link: https://lore.kernel.org/r/20221202152841.672536-2-cezary.rojewski@intel.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Currently only PCM streams can enlist hdac_stream for their data
transfer. Add cstream field to hdac_ext_stream to expose possibility of
compress stream assignment in place of PCM one.
Limited to HOST-type only as there no other users on the horizon.

Signed-off-by: Cezary Rojewski &lt;cezary.rojewski@intel.com&gt;
Acked-by: Takashi Iwai &lt;tiwai@suse.de&gt;
Link: https://lore.kernel.org/r/20221202152841.672536-2-cezary.rojewski@intel.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</pre>
</div>
</content>
</entry>
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