Commit graph

301 commits

Author SHA1 Message Date
Kai Vehmanen
b37a15188e ALSA: hda: avoid write to STATESTS if controller is in reset
The snd_hdac_bus_reset_link() contains logic to clear STATESTS register
before performing controller reset. This code dates back to an old
bugfix in commit e8a7f136f5 ("[ALSA] hda-intel - Improve HD-audio
codec probing robustness"). Originally the code was added to
azx_reset().

The code was moved around in commit a41d122449 ("ALSA: hda - Embed bus
into controller object") and ended up to snd_hdac_bus_reset_link() and
called primarily via snd_hdac_bus_init_chip().

The logic to clear STATESTS is correct when snd_hdac_bus_init_chip() is
called when controller is not in reset. In this case, STATESTS can be
cleared. This can be useful e.g. when forcing a controller reset to retry
codec probe. A normal non-power-on reset will not clear the bits.

However, this old logic is problematic when controller is already in
reset. The HDA specification states that controller must be taken out of
reset before writing to registers other than GCTL.CRST (1.0a spec,
3.3.7). The write to STATESTS in snd_hdac_bus_reset_link() will be lost
if the controller is already in reset per the HDA specification mentioned.

This has been harmless on older hardware. On newer generation of Intel
PCIe based HDA controllers, if configured to report issues, this write
will emit an unsupported request error. If ACPI Platform Error Interface
(APEI) is enabled in kernel, this will end up to kernel log.

Fix the code in snd_hdac_bus_reset_link() to only clear the STATESTS if
the function is called when controller is not in reset. Otherwise
clearing the bits is not possible and should be skipped.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211012142935.3731820-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-10-12 18:05:28 +02:00
Pierre-Louis Bossart
114613f62f ALSA: hda: intel-dsp-cfg: add missing ElkhartLake PCI ID
We missed the fact that ElkhartLake platforms have two different PCI
IDs. We only added one so the SOF driver is never selected by the
autodetection logic for the missing configuration.

BugLink: https://github.com/thesofproject/linux/issues/2990
Fixes: cc8f81c7e6 ('ALSA: hda: fix intel DSP config')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210719231746.557325-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-07-20 09:10:55 +02:00
Kai Vehmanen
4ad7935df6 ALSA: hda: Add AlderLake-M PCI ID
Add HD Audio PCI ID for Intel AlderLake-M. Add rules to
snd_intel_dsp_find_config() to choose SOF driver for ADL-M systems with
PCH-DMIC or Soundwire codecs, and legacy driver for the rest.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210528185123.48332-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-05-30 09:33:08 +02:00
Takashi Iwai
5b1ed7df01 ALSA: control - add generic LED API
This patchset tries to resolve the diversity in the audio LED
 control among the ALSA drivers. A new control layer registration
 is introduced which allows to run additional operations on
 top of the elementary ALSA sound controls.
 
 A new control access group (three bits in the access flags)
 was introduced to carry the LED group information for
 the sound controls. The low-level sound drivers can just
 mark those controls using this access group. This information
 is not exported to the user space, but user space can
 manage the LED sound control associations through sysfs
 (last patch) per Mark's request. It makes things fully
 configurable in the kernel and user space (UCM).
 
 The actual state ('route') evaluation is really easy
 (the minimal value check for all channels / controls / cards).
 If there's more complicated logic for a given hardware,
 the card driver may eventually export a new read-only
 sound control for the LED group and do the logic itself.
 
 The new LED trigger control code is completely separated
 and possibly optional (there's no symbol dependency).
 The full code separation allows eventually to move this
 LED trigger control to the user space in future.
 Actually it replaces the already present functionality
 in the kernel space (HDA drivers) and allows a quick adoption
 for the recent hardware (ASoC codecs including SoundWire).
 
 snd_ctl_led            24576  0
 
 The sound driver implementation is really easy:
 
 1) call snd_ctl_led_request() when control LED layer should be
    automatically activated
    / it calls module_request("snd-ctl-led") on demand /
 2) mark all related kcontrols with
         SNDRV_CTL_ELEM_ACCESS_SPK_LED or
         SNDRV_CTL_ELEM_ACCESS_MIC_LED
 
 Link: https://lore.kernel.org/r/20210317172945.842280-1-perex@perex.cz
 Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Merge tag 'tags/mute-led-rework' into for-next

ALSA: control - add generic LED API

This patchset tries to resolve the diversity in the audio LED
control among the ALSA drivers. A new control layer registration
is introduced which allows to run additional operations on
top of the elementary ALSA sound controls.

A new control access group (three bits in the access flags)
was introduced to carry the LED group information for
the sound controls. The low-level sound drivers can just
mark those controls using this access group. This information
is not exported to the user space, but user space can
manage the LED sound control associations through sysfs
(last patch) per Mark's request. It makes things fully
configurable in the kernel and user space (UCM).

The actual state ('route') evaluation is really easy
(the minimal value check for all channels / controls / cards).
If there's more complicated logic for a given hardware,
the card driver may eventually export a new read-only
sound control for the LED group and do the logic itself.

The new LED trigger control code is completely separated
and possibly optional (there's no symbol dependency).
The full code separation allows eventually to move this
LED trigger control to the user space in future.
Actually it replaces the already present functionality
in the kernel space (HDA drivers) and allows a quick adoption
for the recent hardware (ASoC codecs including SoundWire).

snd_ctl_led            24576  0

The sound driver implementation is really easy:

1) call snd_ctl_led_request() when control LED layer should be
   automatically activated
   / it calls module_request("snd-ctl-led") on demand /
2) mark all related kcontrols with
        SNDRV_CTL_ELEM_ACCESS_SPK_LED or
        SNDRV_CTL_ELEM_ACCESS_MIC_LED

Link: https://lore.kernel.org/r/20210317172945.842280-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-30 17:42:40 +02:00
Amadeusz Sławiński
f4b4bdf29a ALSA: hda: Revert "ALSA: hda: Allow setting preallocation again for x86"
This reverts commit f8e4ae10de ("ALSA: hda: Allow setting
preallocation again for x86").

The reverted commit itself is a revert of c31427d0d2 ("ALSA: hda: No
preallocation on x86 platforms"). It was needed because HDA allowed very
big allocations, up to 1GB per stream. However as previous commit in
this series changes maximum allowed allocation per stream to 4MB, we can
safely revert it back.

On systems where there are a lot of FrontEnds, when
CONFIG_SND_HDA_PREALLOC_SIZE != 0  ALSA core allocates memory for each
FE, which may cause out of memory problems due to per card limit. Force
config to 0 on X86, so memory will be allocated on as needed basis.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=201251#c322
Suggested-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Link: https://lore.kernel.org/r/20210318160618.2504068-4-amadeuszx.slawinski@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-19 16:55:11 +01:00
huangjianghui
8518c6486c ALSA: hda: Fix spelling mistakes
Signed-off-by: huangjianghui <huangjianghui@uniontech.com>
Link: https://lore.kernel.org/r/20210319013854.48830-1-huangjianghui@uniontech.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-19 11:09:26 +01:00
Mark Pearson
a14a621999 ALSA: hda: ignore invalid NHLT table
On some Lenovo systems if the microphone is disabled in the BIOS
only the NHLT table header is created, with no data. This means
the endpoints field is not correctly set to zero - leading to an
unintialised variable and hence invalid descriptors are parsed
leading to page faults.

The Lenovo firmware team is addressing this, but adding a check
preventing invalid tables being parsed is worthwhile.

Tested on a Lenovo T14.

Tested-by: Philipp Leskovitz <philipp.leskovitz@secunet.com>
Reported-by: Philipp Leskovitz <philipp.leskovitz@secunet.com>
Signed-off-by: Mark Pearson <markpearson@lenovo.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210302141003.7342-1-markpearson@lenovo.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-04 09:14:36 +01:00
Takashi Iwai
9b838a3c32 ALSA/ASoC/SOF/SoundWire: fix Kconfig issues
In January, Intel kbuild bot and Arnd Bergmann reported multiple
 issues with randconfig. This patchset builds on Arnd's suggestions to
 
 a) expose ACPI and PCI devices in separate modules, while sof-acpi-dev
 and sof-pci-dev become helpers. This will result in minor changes
 required for developers/testers, i.e. modprobe snd-sof-pci will no
 longer result in a probe. The SOF CI was already updated to deal with
 this module dependency change and introduction of new modules.
 
 b) Fix SOF/SoundWire/DSP_config dependencies by moving the code
 required to detect SoundWire presence in ACPI tables to sound/hda.
 
 Link: https://lore.kernel.org/r/20210302003125.1178419-1-pierre-louis.bossart@linux.intel.com
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Merge tag 'tags/sound-sdw-kconfig-fixes' into for-linus

ALSA/ASoC/SOF/SoundWire: fix Kconfig issues

In January, Intel kbuild bot and Arnd Bergmann reported multiple
issues with randconfig. This patchset builds on Arnd's suggestions to

a) expose ACPI and PCI devices in separate modules, while sof-acpi-dev
and sof-pci-dev become helpers. This will result in minor changes
required for developers/testers, i.e. modprobe snd-sof-pci will no
longer result in a probe. The SOF CI was already updated to deal with
this module dependency change and introduction of new modules.

b) Fix SOF/SoundWire/DSP_config dependencies by moving the code
required to detect SoundWire presence in ACPI tables to sound/hda.

Link: https://lore.kernel.org/r/20210302003125.1178419-1-pierre-louis.bossart@linux.intel.com
2021-03-02 18:30:07 +01:00
Pierre-Louis Bossart
ffd7e705fa ALSA: hda: intel-sdw-acpi: add missing include files
We rely on implicit includes, list out explicitly what this code
relies on.

Suggested-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20210302003125.1178419-8-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-02 15:33:17 +01:00
Pierre-Louis Bossart
08c2a4bc9f ALSA: hda: move Intel SoundWire ACPI scan to dedicated module
The ACPI scan capabilities is called from the intel-dspconfig as well
as the SOF/HDaudio drivers. This creates dependencies and randconfig issues
when HDaudio and SOF/SoundWire are not all configured as modules.

To simplify Kconfig dependencies between HDAudio, SoundWire, SOF and
intel-dspconfig, move the ACPI scan helpers to a dedicated
module. This follows the same idea as NHLT helpers which are already
handled as a dedicated module.

The only functional change is that the kernel parameter to filter
links is now handled by a different module, but that was only provided
for developers needing work-arounds for early BIOS releases.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20210302003125.1178419-7-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-02 15:33:00 +01:00
Pierre-Louis Bossart
a864e8f159 ALSA: hda: intel-nhlt: verify config type
Multiple bug reports report issues with the SOF and SST drivers when
dealing with single microphone cases.

We currently read the DMIC array information unconditionally but we
don't check that the configuration type is actually a mic array.

When the DMIC link does not rely on a mic array configuration, the
recommendation is to check the format information to infer the maximum
number of channels, and map this to the number of microphones.

This leaves a potential for a mismatch between actual microphones
available in hardware and what the ACPI table contains, but we have no
other source of information.

Note that single microphone configurations can alternatively be
handled with a 'mic array' configuration along with a 'vendor-defined'
geometry.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=201251
BugLink: https://github.com/thesofproject/linux/issues/2725
Fixes: 7a33ea70e1 ('ALSA: hda: intel-nhlt: handle NHLT VENDOR_DEFINED DMIC geometry')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210302000146.1177770-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-02 10:22:47 +01:00
Pierre-Louis Bossart
3531ba21f5 ALSA: hda: fix kernel-doc warnings
v5.12-rc1 flags new warnings with make W=1, fix missing or broken
function descriptors.

sound/pci/hda/hda_codec.c:3492: warning: expecting prototype for
snd_hda_input_mux_info_info(). Prototype was for
snd_hda_input_mux_info() instead

sound/pci/hda/hda_codec.c:3521: warning: expecting prototype for
snd_hda_input_mux_info_put(). Prototype was for
snd_hda_input_mux_put() instead

sound/pci/hda/hda_codec.c:3958: warning: expecting prototype for
_snd_hda_pin_ctl(). Prototype was for _snd_hda_set_pin_ctl() instead

sound/pci/hda/hda_jack.c:223: warning: expecting prototype for
snd_hda_set_dirty_all(). Prototype was for
snd_hda_jack_set_dirty_all() instead

sound/pci/hda/hda_jack.c:309: warning: expecting prototype for
snd_hda_jack_detect_enable_mst(). Prototype was for
snd_hda_jack_detect_enable_callback_mst() instead

sound/pci/hda/hda_generic.c:3933: warning: expecting prototype for
snd_dha_gen_add_mute_led_cdev(). Prototype was for
snd_hda_gen_add_mute_led_cdev() instead

sound/pci/hda/hda_generic.c:4093: warning: expecting prototype for
snd_dha_gen_add_micmute_led_cdev(). Prototype was for
snd_hda_gen_add_micmute_led_cdev() instead

sound/pci/hda/patch_ca0132.c:2357: warning: expecting prototype for
Prepare and send the SCP message to DSP(). Prototype was for
dspio_scp() instead

sound/pci/hda/patch_ca0132.c:2883: warning: expecting prototype for
Allocate router ports(). Prototype was for dsp_allocate_router_ports()
instead

sound/pci/hda/patch_ca0132.c:3202: warning: expecting prototype for
Write a block of data into DSP code or data RAM using pre(). Prototype
was for dspxfr_one_seg() instead

sound/pci/hda/patch_ca0132.c:3397: warning: expecting prototype for
data overlay to DSP memories(). Prototype was for dspxfr_image()
instead

sound/hda/hdac_regmap.c:393: warning: expecting prototype for
snd_hdac_regmap_init(). Prototype was for snd_hdac_regmap_exit()
instead

sound/hda/ext/hdac_ext_controller.c:142: warning: expecting prototype
for snd_hdac_ext_bus_get_link_index(). Prototype was for
snd_hdac_ext_bus_get_link() instead

sound/hda/ext/hdac_ext_stream.c:140: warning: expecting prototype for
snd_hdac_ext_linkstream_start(). Prototype was for
snd_hdac_ext_link_stream_start() instead

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210301174617.116960-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-02 10:21:36 +01:00
Kai Vehmanen
c4294d7f05 ALSA: hda: intel-dsp-config: add Alder Lake support
Add rules to select SOF driver for Alder Lake systems if a digital
microphone or SoundWire codecs are present in the system. This is
following same rules as for older Tiger Lake systems.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Xiuli Pan <xiuli.pan@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210210111310.2227417-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-17 21:17:09 +01:00
Hans de Goede
5427c7d629 ALSA: hda: intel-dsp-config: Add SND_INTEL_BYT_PREFER_SOF Kconfig option
The kernel has 2 drivers for the Low Power Engine audio-block on
Bay- and Cherry-Trail SoCs. The old SST driver and the new SOF
driver. If both drivers are enabled then the kernel will default
to using the old SST driver, unless told otherwise through the
snd_intel_dspcfg.dsp_driver module-parameter.

Add a boolean SND_INTEL_BYT_PREFER_SOF Kconfig option, which when set to Y
will make the kernel default to the new SOF driver instead.
The option defaults to n, preserving the current behavior.

Making this configurable will help distributions such as Fedora:
https://fedoraproject.org/w/index.php?title=Changes/SofDefaultForIntelLpe
to test using SOF on BYT/CHT during the transition phase where we
have both drivers (eventually the old driver and this option will
be removed).

Note that this drops the acpi_config_table[] containing 2 entries per ACPI
hardware-id if both drivers are enabled. snd_intel_acpi_dsp_find_config()
will always return the first hit, so we only need a single entry with the
flags value set depending on the Kconfig settings.

Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210208135919.135600-1-hdegoede@redhat.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-08 17:49:54 +01:00
Kai Vehmanen
f9e5fd1b66 ALSA: hda: add link_power op to hdac_bus_ops
The extended HDA bus (hdac_ext) provides interfaces for more
fine-grained control of individual links than what plain HDA
provides for. Links can be powered off when they are not used and if
all links are released, controller can shut down the command DMA.

These interfaces are currently not used by common HDA codec drivers.
When a HDA codec is runtime suspended, it calls snd_hdac_codec_link_down(),
but there is no link to the HDA extended bus, and on controller side
the links are shut down only when all codecs are suspended.

This patch adds link_power() to hdac_bus ops. Controllers using the HDA
extended core, can use this to plug in snd_hdac_ext_bus_link_power() to
implement more fine-grained control of link power.

No change is needed for plain HDA controllers nor to existing HDA
codec drivers.

Co-developed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210205184630.1938761-2-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-08 15:56:35 +01:00
Takashi Iwai
5c953a2263 Merge branch 'for-linus' into for-next
Back-merge the 5.11 devel branch for further patching.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-02-02 18:48:33 +01:00
Rikard Falkeborn
0417fadab4 ALSA: hda: Constify static attribute_group
The only usage of hdac_dev_attr_group is to put its address in an array
of pointers to const attribute_group structs. Make it const to allow the
compiler to put it in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Link: https://lore.kernel.org/r/20210131001241.2278-3-rikard.falkeborn@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-01-31 09:50:11 +01:00
Bard Liao
c5b5ff607d ALSA: hda: intel-dsp-config: add PCI id for TGL-H
Adding PCI id for TGL-H. Like for other TGL platforms, SOF is used if
Soundwire codecs or PCH-DMIC is detected.

Signed-off-by: Bard Liao <bard.liao@intel.com>
Reviewed-by: Xiuli Pan <xiuli.pan@intel.com>
Reviewed-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210125083051.828205-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-01-25 10:37:37 +01:00
Lars-Peter Clausen
81d0ec4349 ALSA: hda: Use DIV_ROUND_UP()/roundup() instead of open-coding it
Use DIV_ROUND_UP() and roundup() instead of open-coding them. This
documents intent and makes it more clear what is going on for the casual
reviewer.

Generated using the following the Coccinelle semantic patch.

// <smpl>
@@
expression x, y;
@@
-((((x) + (y) - 1) / (y)) * y)
+roundup(x, y)

@r1@
expression x;
constant C1;
constant C2;
@@
 (x + C1) / C2

@script:python@
C1 << r1.C1;
C2 << r1.C2;
@@
print C1, C2
try:
	if int(C1) != int(C2) - 1:
		cocci.include_match(False)
except:
	cocci.include_match(False)

@@
expression r1.x;
constant r1.C1;
constant r1.C2;
@@
-(((x) + C1) / C2)
+DIV_ROUND_UP(x, C2)
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20201223172229.781-9-lars@metafoo.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-12-25 09:11:51 +01:00
Mark Brown
4ecc08b2f5 Auxiliary Bus support tag for 5.11-rc1
This is a signed tag for other subsystems to be able to pull in the
 auxiliary bus support into their trees for the 5.11-rc1 merge.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'auxbus-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core into asoc-5.11

Auxiliary Bus support tag for 5.11-rc1

This is a signed tag for other subsystems to be able to pull in the
auxiliary bus support into their trees for the 5.11-rc1 merge.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-04 20:39:45 +00:00
Pierre-Louis Bossart
0e5cc22162
ALSA: hda: intel-dsp-config: ignore dsp_driver parameter for PCI legacy devices
On Haswell/Broadwell/Baytrail/Braswell, the DSP is not used for the
HDMI/DP interface, and setting the dsp_driver parameter to a value > 1
has the side effect of preventing the HDaudio legacy driver from
probing.

The DSP driver selection should really only handle cases where a DSP
is actually used. This patch traps all known PCI devices and makes
sure the HDaudio driver can always be probed.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20201112223825.39765-15-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-11-19 18:24:44 +00:00
Pierre-Louis Bossart
803e591337
ALSA: hda: intel-dsp-config: add Broadwell ACPI DSP driver selection
Add ACPI IDs for Broadwell (and Haswell for consistency). This
addition is required for dynamic selection of drivers on those
devices.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20201112223825.39765-11-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-11-19 18:24:41 +00:00
Pierre-Louis Bossart
b568230529
ALSA: hda: intel-dsp-config: add helper for ACPI DSP driver selection
Mirror capabilities provided for PCI devices, so that distributions
can select which ACPI driver is loaded at run-time with kernel
parameters and DMI tables instead of forcing a build-time selection.

The "legacy" option supported for HDaudio has no meaning here and will
be ignored.

The 'SST' driver based on closed-source firmware has the priority to
avoid any impact on users, and the choice to use SOF is strictly
opt-in. This may change at some point when the 'SST' driver is
deprecated on Baytrail/Cherrytrail.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20201112223825.39765-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-11-19 18:24:35 +00:00
Dan Carpenter
158e1886b6 ALSA: hda: prevent undefined shift in snd_hdac_ext_bus_get_link()
This is harmless, but the "addr" comes from the user and it could lead
to a negative shift or to shift wrapping if it's too high.

Fixes: 0b00a5615d ("ALSA: hdac_ext: add hdac extended controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20201103101807.GC1127762@mwanda
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-11-03 14:11:38 +01:00
Takashi Iwai
f401b2c993 ASoC: Updates for v5.10
Not a huge amount going on in the core for ASoC this time but quite a
 lot of driver activity, especially for the Intel platforms:
 
  - Replacement of the DSP driver for some older x86 systems with a new
    one which was written with closer reference to the DSP firmware so
    should hopefully be more robust and maintainable.
  - A big batch of static checker and other fixes for the rest of the x86
    DSP drivers.
  - Cleanup of the error unwinding code from Morimoto-san, hopefully
    making it more robust.
  - Helpers for parsing auxiluary devices from the device tree from
    Stephan Gerhold.
  - New support for AllWinner A64, Cirrus Logic CS4234, Mediatek MT6359
    Microchip S/PDIF TX and RX controllers, Realtek RT1015P, and Texas
    Instruments J721E, TAS2110, TAS2564 and TAS2764
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Merge tag 'asoc-v5.10' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v5.10

Not a huge amount going on in the core for ASoC this time but quite a
lot of driver activity, especially for the Intel platforms:

 - Replacement of the DSP driver for some older x86 systems with a new
   one which was written with closer reference to the DSP firmware so
   should hopefully be more robust and maintainable.
 - A big batch of static checker and other fixes for the rest of the x86
   DSP drivers.
 - Cleanup of the error unwinding code from Morimoto-san, hopefully
   making it more robust.
 - Helpers for parsing auxiluary devices from the device tree from
   Stephan Gerhold.
 - New support for AllWinner A64, Cirrus Logic CS4234, Mediatek MT6359
   Microchip S/PDIF TX and RX controllers, Realtek RT1015P, and Texas
   Instruments J721E, TAS2110, TAS2564 and TAS2764
2020-10-12 16:08:57 +02:00
Takashi Iwai
96e503f900 ALSA: hda/i915 - fix list corruption with concurrent probes
Current hdac_i915 uses a static completion instance to wait
for i915 driver to complete the component bind.

This design is not safe if multiple HDA controllers are active and
communicating with different i915 instances, and can lead to list
corruption and failed audio driver probe.

Fix the design by moving completion mechanism to common acomp
code and remove the related code from hdac_i915.

Fixes: 7b882fe3e3 ("ALSA: hda - handle multiple i915 device instances")
Co-developed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20201006161722.500256-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-10-09 16:46:04 +02:00
Mark Brown
fd6b519a30 Linux 5.9-rc5
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Merge tag 'v5.9-rc5' into asoc-5.10

Linux 5.9-rc5
2020-10-06 16:19:24 +01:00
Kai Vehmanen
502f389a0f ALSA: hda - remove kerneldoc for internal hdac_i915 function
Drop the kerneldoc markup for connectivity_check() as it's an
static helper function. Fixes the following make W=1 warning:

sound/hda/hdac_i915.c:80: warning: Function parameter or member 'i915' not described in 'connectivity_check'
sound/hda/hdac_i915.c:80: warning: Function parameter or member 'hdac' not described in 'connectivity_check'

Fixes: 7b882fe3e3 ('ALSA: hda - handle multiple i915 device instances')
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200924161027.3402260-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-24 20:59:55 +02:00
Kai Vehmanen
163cd1059a
ASoC: hdac: make SOF HDA codec driver probe deterministic
To provide backward compatibility to older systems, the SOF HDA driver
allows user to specify which HDMI codec driver to use at runtime via
kernel parameter. This mechanism has a subtle flaw in that it assumes
the codec drivers not to be loaded when the SOF PCI driver is loaded.

The problem is rooted in use of the hdev->type field.
snd_hdac_ext_bus_device_init() initializes this field to HDA_DEV_ASOC.
This signals the HDA core that ASoC drivers should be considered in
driver matching (hda_bus_match()). The SOF and SST drivers continue by
overriding this field to HDA_DEV_LEGACY and proceeding to load driver
modules with request_module(). Correct drivers will get loaded and
attached.

If however the codec drivers are already loaded when
snd_hdac_ext_bus_device_init() is called, the matching will not work as
expected as device type is still set to HDA_DEV_ASOC. Specifically if
hdac-hdmi is attached when machine driver is configured to use hdac-hda,
this leads to out-of-bounds memory access in
hda_dsp_hdmi_build_controls().

Fix the issue by adding codec type as a parameter to
snd_hdac_ext_bus_device_init() and ensuring type is set correctly from
the start.

Fixes: 139c7febad ("ASoC: SOF: Intel: add support for snd-hda-codec-hdmi")
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200921100841.2882662-1-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-21 23:57:24 +01:00
Kai Vehmanen
534ad9afb1 ALSA: hda - fix CONTROLLER_IN_GPU macro name
The CONTROLLER_IN_GPU() macro has different semantics than
the similarly named macro in hda_intel.c. The name is also
misleading as the macro is used to apply a Intel HSW/BDW
programming logic for HDA controller clock configuration.
Rename macro to reflect the actual implementation.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200921141741.2983072-5-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-21 17:58:47 +02:00
Kai Vehmanen
7b882fe3e3 ALSA: hda - handle multiple i915 device instances
Currently i915_component_master_match() will return the first matching
i915 instance. This does not work in case system has multiple i915
and HDA audio controller instances.

Add a new connectivity check that handles following cases:
 - i915 and HDA controller on same PCI bus
 - discrete GPU with embedded HDA audio controller connected
   via PCI bridge

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200921141741.2983072-4-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-21 17:57:30 +02:00
Pierre-Louis Bossart
b79de57b43 ALSA: hda: use consistent HDAudio spelling in comments/docs
We use HDaudio and HDAudio, pick one to make searches easier.
No functionality change

Also fix timestamping typo in documentation.

Reported-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200902154250.1440585-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-02 19:31:32 +02:00
Rander Wang
13774d81f3 ALSA: hda: fix a runtime pm issue in SOF when integrated GPU is disabled
In snd_hdac_device_init pm_runtime_set_active is called to
increase child_count in parent device. But when it is failed
to build connection with GPU for one case that integrated
graphic gpu is disabled, snd_hdac_ext_bus_device_exit will be
invoked to clean up a HD-audio extended codec base device. At
this time the child_count of parent is not decreased, which
makes parent device can't get suspended.

This patch calls pm_runtime_set_suspended to decrease child_count
in parent device in snd_hdac_device_exit to match with
snd_hdac_device_init. pm_runtime_set_suspended can make sure that
it will not decrease child_count if the device is already suspended.

Signed-off-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200902154218.1440441-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-09-02 19:26:39 +02:00
Sameer Pujar
b90b925fd5 ALSA: hda: avoid reset of sdo_limit
By default 'sdo_limit' is initialized with a default value of '8'
as per spec. This is overridden in cases where a different value is
required. However this is getting reset when snd_hdac_bus_init_chip()
is called again, which happens during runtime PM cycle.

Avoid this reset by moving 'sdo_limit' setup to 'snd_hdac_bus_init()'
function which would be called only once.

Fixes: 67ae482a59 ("ALSA: hda: add member to store ratio for stripe control")
Cc: <stable@vger.kernel.org>
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Link: https://lore.kernel.org/r/1597851130-6765-1-git-send-email-spujar@nvidia.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-08-19 17:37:06 +02:00
Mohan Kumar
4106820b90 ALSA: hda: Add dma stop delay variable
A variable dma_stop_delay is added as a new member in hdac_bus
structure to avoid memory decode error incase DMA RUN bit is not
disabled in the given timeout from snd_hdac_stream_sync function and
followed by stream reset which results in memory decode error between
reset set and clear operation.

Signed-off-by: Mohan Kumar <mkumard@nvidia.com>
Link: https://lore.kernel.org/r/20200805095221.5476-3-mkumard@nvidia.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-08-05 12:27:47 +02:00
Takashi Iwai
91ef3d9f9f ASoC: Fixes for v5.8
This is a collection of mostly small fixes, mostly fixing fallout from
 some of the DPCM changes that went in last time around which shook out
 some issues on i.MX and Qualcomm platforms.  The addition of a managed
 version of snd_soc_register_dai() is to fix resource leaks.
 
 There's also a few new device IDs for x86 systems.
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Merge tag 'asoc-fix-v5.8-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.8

This is a collection of mostly small fixes, mostly fixing fallout from
some of the DPCM changes that went in last time around which shook out
some issues on i.MX and Qualcomm platforms.  The addition of a managed
version of snd_soc_register_dai() is to fix resource leaks.

There's also a few new device IDs for x86 systems.
2020-06-22 13:49:14 +02:00
Pierre-Louis Bossart
4228668eb9
ASoC: Intel: SOF: merge COMETLAKE_LP and COMETLAKE_H
We already have two configurations for CometLake, and a third one
coming. On other platforms, we used a single Kconfig option, so we
should follow the same trend by merging the two cases in a backwards
compatible way.

The backwards compatibility is handled by overloading the COMETLAKE_LP
kconfig as COMETLAKE. In practice we've never seen a case where
COMETLAKE_H is not selected along with COMETLAKE_LP, so keeping one
of the two is enough.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200617164755.18104-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-06-17 20:01:00 +01:00
Takashi Iwai
7318234c8d ASoC: Updates for v5.8
This has been another very active release with a bunch of new drivers,
 lots of fixes everywhere and continued core improvements from
 Morimoto-san:
 
  - Lots of core cleanups and refactorings from Morimoto-san, factoring
    out common operations and making the card abstraction more solid.
  - Continued work on cleaning up and improving the Intel drivers, along
    with some new platform support for them.
  - Fixes to make the Marvell SSPA driver work upstream.
  - Support for AMD Renoir ACP, Dialog DA7212, Freescale EASRC and
    i.MX8M, Intel Elkhard Lake, Maxim MAX98390, Nuvoton NAU8812 and
    NAU8814 and Realtek RT1016.
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Merge tag 'asoc-v5.8' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v5.8

This has been another very active release with a bunch of new drivers,
lots of fixes everywhere and continued core improvements from
Morimoto-san:

 - Lots of core cleanups and refactorings from Morimoto-san, factoring
   out common operations and making the card abstraction more solid.
 - Continued work on cleaning up and improving the Intel drivers, along
   with some new platform support for them.
 - Fixes to make the Marvell SSPA driver work upstream.
 - Support for AMD Renoir ACP, Dialog DA7212, Freescale EASRC and
   i.MX8M, Intel Elkhard Lake, Maxim MAX98390, Nuvoton NAU8812 and
   NAU8814 and Realtek RT1016.
2020-06-01 20:26:07 +02:00
Mark Brown
358c7c61fd
Merge remote-tracking branch 'asoc/for-5.8' into asoc-linus 2020-06-01 13:01:15 +01:00
Takashi Iwai
b9f2d35f05 ALSA: hda: Unexport some local helper functions
snd_hdac_bus_queue_event() and snd_hdac_bus_exec_verb() are used only
internally in HD-audio core.  Let's drop the exports and move the
declarations into local.h.

Link: https://lore.kernel.org/r/20200516062854.22141-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-16 08:29:49 +02:00
Takashi Iwai
c637fa1512 ALSA: hda: Fix potential race in unsol event handler
The unsol event handling code has a loop retrieving the read/write
indices and the arrays without locking while the append to the array
may happen concurrently.  This may lead to some inconsistency.
Although there hasn't been any proof of this bad results, it's still
safer to protect the racy accesses.

This patch adds the spinlock protection around the unsol handling loop
for addressing it.  Here we take bus->reg_lock as the writer side
snd_hdac_bus_queue_event() is also protected by that lock.

Link: https://lore.kernel.org/r/20200516062556.30951-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-16 08:27:11 +02:00
Cezary Rojewski
df1fceacb2 ALSA: hda: Allow SST driver on SKL and KBL platforms with DMIC
Update intel-dspcfg with FLAG_SST_ONLY_IF_DMIC option and use it for
Skylake and Kabylake platforms when DMIC is present.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200506203951.6369-1-cezary.rojewski@intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-07 09:08:12 +02:00
Kai-Heng Feng
50f0bf550f ALSA: hda: Use dev_to_hdac_dev macro
Use dev_to_hdac_dev() instead of container_of().

No functional change intended.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://lore.kernel.org/r/20200505030357.28004-1-kai.heng.feng@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-05 08:58:35 +02:00
Sameer Pujar
67ae482a59 ALSA: hda: add member to store ratio for stripe control
Stripe control programming is governed by following formula, which is
referenced from the HD Audio specification(Revision 1.0a).
  { ((num_channels * bits_per_sample) / number of SDOs) >= 8 }

Currently above is implemented in snd_hdac_get_stream_stripe_ctl().
This patch introduces a structure member to store the default factor
of '8'. If any HW wants to use a different value, this member can be
easily updated.

Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Link: https://lore.kernel.org/r/1588580176-2801-3-git-send-email-spujar@nvidia.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-05-04 11:51:23 +02:00
Pierre-Louis Bossart
e149ca29f3
ASoC: SOF/Intel: clarify SPDX license with GPL-2.0-only
Remove the ambiguity with GPL-2.0 and use an explicit GPL-2.0-only
tag.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20200501145850.15178-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-01 17:45:24 +01:00
Takashi Iwai
36dbae9945 Merge branch 'topic/nhlt' into for-next
Merge NHLT init cleanup.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-04-24 08:22:55 +02:00
Cezary Rojewski
0d283287a4 ALSA: hda: Refactor Intel NHLT init
NHLT fetch based on _DSM prevents ACPI table override mechanism from
being utilized. Make use of acpi_get_table to enable it and get rid of
redundant code. In consequence, NHLT can be overridden just like any
other ACPI table, e.g.: DSDT or SSDT.

Change has been verified on all Intel AVS architecture platforms, RVP
and production laptops both.

Change possible due to addition of NHLT signature to the list of
standard ACPI tables:
https://patchwork.kernel.org/patch/11463235/

Override helps not only with debug purposes but also allows user for
table adjustment when one found on their production hardware is invalid.
Shared official NHLT spec is now available to community at:
https://01.org/blogs/intel-smart-sound-technology-audio-dsp

NHLT support for iASL is still ongoing subject but should be available
in nearest future.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20200423160310.28019-1-cezary.rojewski@intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-04-24 08:20:37 +02:00
Takashi Iwai
f8e4ae10de ALSA: hda: Allow setting preallocation again for x86
The commit c31427d0d2 ("ALSA: hda: No preallocation on x86
platforms") changed CONFIG_SND_HDA_PREALLOC_SIZE setup and its default
to zero for x86, as the preallocation should work almost all cases.
However, this expectation was too naive; some applications try to
allocate as the max buffer size as possible, and it leads to the
memory exhaustion.  More badly, the commit changed the kconfig no
longer adjustable for x86, so you can't fix it statically (although it
can be still adjusted via procfs).

So, practically seen, it's more recommended to set a reasonable limit
for x86, too.  This patch follows to that experience, and changes the
default to 2048 and allow the kconfig adjustable again.

Fixes: c31427d0d2 ("ALSA: hda: No preallocation on x86 platforms")
Cc: <stable@vger.kernel.org>
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207223
Link: https://lore.kernel.org/r/20200413201919.24241-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-04-13 22:22:28 +02:00
Pierre-Louis Bossart
0650857570 ALSA: hda: add autodetection for SoundWire
When an ACPI companion device is present and the SoundWire link mask
information is available, use SoundWire instead of legacy HDA or
Skylake drivers.

The SOF driver is selected when SoundWire or DMIC are detected. There
is no precedence at this level. In the SOF driver proper, SoundWire
will be handled first since it is mutually exclusive with HDaudio.

Known devices with an existing DMI quirk bypass this detection to
avoid any dependency on ACPI/DSDT tables.

Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200409190251.16569-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-04-11 12:39:32 +02:00
Takashi Iwai
0a7efa14e6 ALSA: hda: Use scnprintf() for string truncation
snd_hdac_codec_modalias() truncates the string to the given size and
returns its size, but it returned a wrong size from snprintf().
snprintf() returns the would-be-output size, not the actual size.
Use scnprintf() instead to return the correct size.

Link: https://lore.kernel.org/r/20200313130241.8970-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-03-13 15:59:04 +01:00