Use 2-factor multiplication argument form devm_kcalloc() instead
of devm_kzalloc().

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220916062234.153275-1-ye.xingchen@zte.com.cn


Signed-off-by: Mark Brown <broonie@kernel.org>

Use 2-factor multiplication argument form devm_kcalloc() instead
of devm_kzalloc().

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/20220916061906.152434-1-ye.xingchen@zte.com.cn


Signed-off-by: Mark Brown <broonie@kernel.org>

Use 2-factor multiplication argument form devm_kcalloc() instead
of devm_kzalloc().

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220916062511.153962-1-ye.xingchen@zte.com.cn


Signed-off-by: Mark Brown <broonie@kernel.org>

Use 2-factor multiplication argument form devm_kcalloc() instead
of devm_kzalloc().

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220916062320.153456-1-ye.xingchen@zte.com.cn


Signed-off-by: Mark Brown <broonie@kernel.org>

Merge series from Srinivas Kandagatla <srinivas.kandagatla@linaro.org>:

This patchset adds support for SC8280XP SoC machine driver.

First patch moves some of the commonly used code to common from sm8250 machine driver
and the follow on code adds minimal support for sc8280xp.

Currently this driver is only tested with SmartSpeakers and Headset
on Lenovo Thinkpad X13s.

Support for sm8450 is tested and I will post the patches soon.

Add machine driver for sc8280xp SoC.

This intial supports only includes WSA883x Speakers and WCD938x based headset.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220916132427.1845-6-srinivas.kandagatla@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

SM8450 machine driver code can be reused across multiple Qualcomm SoCs,
At least another 2 of them for now (SM8450 and SC8250XP).

Move some of the common SoundWire stream specific code to common file
so that other drivers can use it instead of duplication.

This patch is to prepare the common driver to be able to add new SoCs support
with less dupication.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220916132427.1845-5-srinivas.kandagatla@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

Add compatibles for sm8450 and sm8250xp based soundcards.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220916132427.1845-4-srinivas.kandagatla@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

Sort compatible strings for consistency reasons.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220916132427.1845-3-srinivas.kandagatla@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

qcom_snd_parse_of depends on ASoC EXPORT_SYMBOL_GPL functions,
so make qcom_snd_parse_of and EXPORT_SYMBOL_GPL.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220916132427.1845-2-srinivas.kandagatla@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

With the change introduced by 6ac24610, the calibration can only be
done after the codec probe (but questionable if it is working since
203A_AMP_EN is 0) or when the codec is powered up for audio use, in other
cases "AMP is not ready to run calibration" is printed.

This changes how this worked before the patch: the codec was force powered
on for the duration of the calibration readout, then shut down.
So, if a calibration was asked when the codec was active, it would have
powered it down?

To correct the calibration logic: check if the codec is powered on and if
it is not then enable it, do the readout and put it back to disabled.
Do this while keeping the dapm locked to avoid interfering with normal
operation via DAPM.

Fixes: 6ac24610

 ("ASoC: max98390: Remove unnecessary amp on/off conrtol")
Reported-by: Fred Oh <fred.oh@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20220916111349.4433-1-peter.ujfalusi@linux.intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>

Merge series from Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>:

Hi,

Dependencies/merging
====================
1. The DTS patches are independent.
2. The binding patches should come together, because of context changes. Could
   be one of: Qualcomm SoC, ASoC or DT tree.

Changes since v3
================
1. Patch 9-10: re-order, so first apr.yaml is corrected and then we convert to
   DT schema. This makes patchset fully bisectable in expense of changing the same
   lines twice.
2. Patch 11: New patch.

Changes since v2
================
1. Patch 9: rename and extend commit msg.
2. Add Rb tags.

Changes since v1
================
1. Patch 9: New patch.
2. Patch 10: Correct also sound/qcom,q6apm-dai.yaml (Rob).
2. Patch 13: New patch.
3. Add Rb/Tb tags.

Best regards,
Krzysztof

Krzysztof Kozlowski (15):
  arm64: dts: qcom: sdm630: align APR services node names with dtschema
  arm64: dts: qcom: sdm845: align APR services node names with dtschema
  arm64: dts: qcom: sm8250: align APR services node names with dtschema
  arm64: dts: qcom: msm8996: fix APR services nodes
  arm64: dts: qcom: sdm845: align dai node names with dtschema
  arm64: dts: qcom: msm8996: align dai node names with dtschema
  arm64: dts: qcom: qrb5165-rb5: align dai node names with dtschema
  arm64: dts: qcom: sm8250: use generic name for LPASS clock controller
  dt-bindings: soc: qcom: apr: correct service children
  ASoC: dt-bindings: qcom,q6asm: convert to dtschema
  ASoC: dt-bindings: qcom,q6adm: convert to dtschema
  ASoC: dt-bindings: qcom,q6dsp-lpass-ports: cleanup example
  ASoC: dt-bindings: qcom,q6dsp-lpass-clocks: cleanup example
  ASoC: dt-bindings: qcom,q6apm-dai: adjust indentation in example
  dt-bindings: soc: qcom: apr: add missing properties

 .../bindings/soc/qcom/qcom,apr.yaml           | 112 ++++++++++++++++--
 .../bindings/sound/qcom,q6adm-routing.yaml    |  52 ++++++++
 .../devicetree/bindings/sound/qcom,q6adm.txt  |  39 ------
 .../bindings/sound/qcom,q6apm-dai.yaml        |  21 ++--
 .../bindings/sound/qcom,q6asm-dais.yaml       | 112 ++++++++++++++++++
 .../devicetree/bindings/sound/qcom,q6asm.txt  |  70 -----------
 .../sound/qcom,q6dsp-lpass-clocks.yaml        |  36 +++---
 .../sound/qcom,q6dsp-lpass-ports.yaml         |  64 +++++-----
 arch/arm64/boot/dts/qcom/msm8996.dtsi         |  10 +-
 arch/arm64/boot/dts/qcom/qrb5165-rb5.dts      |   4 +-
 arch/arm64/boot/dts/qcom/sdm630.dtsi          |   8 +-
 arch/arm64/boot/dts/qcom/sdm845-db845c.dts    |   2 +-
 .../boot/dts/qcom/sdm845-xiaomi-beryllium.dts |   2 +-
 .../boot/dts/qcom/sdm845-xiaomi-polaris.dts   |   4 +-
 arch/arm64/boot/dts/qcom/sdm845.dtsi          |   8 +-
 arch/arm64/boot/dts/qcom/sm8250.dtsi          |  10 +-
 16 files changed, 346 insertions(+), 208 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/sound/qcom,q6adm-routing.yaml
 delete mode 100644 Documentation/devicetree/bindings/sound/qcom,q6adm.txt
 create mode 100644 Documentation/devicetree/bindings/sound/qcom,q6asm-dais.yaml
 delete mode 100644 Documentation/devicetree/bindings/sound/qcom,q6asm.txt

--
2.34.1

The APR bindings were not describing all properties already used in DTS:
1. Add qcom,glink-channels, qcom,smd-channels and qcom,intents (widely
   used).
2. Add power-domains for MSM8996.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220910091428.50418-16-krzysztof.kozlowski@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

Cleanup the example DTS by fixing indentation to 4-spaces and adding
blank lines for readability.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220910091428.50418-15-krzysztof.kozlowski@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

Cleanup the example DTS by adding APR and service compatibles, adding
typical properties, using proper device node names for services and
fixing indentation to 4-spaces.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220910091428.50418-14-krzysztof.kozlowski@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

Cleanup the example DTS by adding APR and service compatibles, adding
typical properties, using proper device node names for services and
fixing indentation to 4-spaces.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220910091428.50418-13-krzysztof.kozlowski@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

Convert Qualcomm Audio Device Manager (Q6ADM) bindings to DT schema.

The original bindings documented:
1. APR service node with compatibles: "qcom,q6adm" and
"qcom,q6adm-v<MAJOR-NUMBER>.<MINOR-NUMBER>",
2. Routing child node with compatible "qcom,q6adm-routing".

The conversion entirely drops (1) because the compatible is already
documented in bindings/soc/qcom/qcom,apr.yaml.  The
"qcom,q6adm-v<MAJOR-NUMBER>.<MINOR-NUMBER>" on the other hand is not
used at all - neither in existing DTS, nor in downstream sources - so
versions seems to be fully auto-detectable.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220910091428.50418-12-krzysztof.kozlowski@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

Convert Qualcomm Audio Stream Manager (Q6ASM) bindings to DT schema.

The original bindings documented:
1. APR service node with compatibles: "qcom,q6asm" and
   "qcom,q6asm-v<MAJOR-NUMBER>.<MINOR-NUMBER>",
2. actual DAIs child node with compatible "qcom,q6asm-dais".

The conversion entirely drops (1) because the compatible is already
documented in bindings/soc/qcom/qcom,apr.yaml.  The
"qcom,q6asm-v<MAJOR-NUMBER>.<MINOR-NUMBER>" on the other hand is not
used at all - neither in existing DTS, nor in downstream sources - so
versions seems to be fully auto-detectable.

Another change done in conversion is adding "iommus" property, which is
already used in DTS and Linux driver.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220910091428.50418-11-krzysztof.kozlowski@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

The APR bindings were not describing properly children nodes for DAIs.
None of the DTSes use unit addresses for the children, so correct the
nodes and reference their schema: clock-controller, dais and routing.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220910091428.50418-10-krzysztof.kozlowski@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

dev_err() can be replace with dev_err_probe() which will check if error
code is -EPROBE_DEFER.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220914133355.3779364-3-yangyingliang@huawei.com


Signed-off-by: Mark Brown <broonie@kernel.org>

dev_err() can be replace with dev_err_probe() which will check if error
code is -EPROBE_DEFER.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220914133355.3779364-2-yangyingliang@huawei.com


Signed-off-by: Mark Brown <broonie@kernel.org>

dev_err/dev_dbg() can be replace with dev_err_probe() which will check if error
code is -EPROBE_DEFER.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220914133355.3779364-1-yangyingliang@huawei.com


Signed-off-by: Mark Brown <broonie@kernel.org>

In eukrea_tlv320_probe(), we need to hold the reference returned
from of_find_compatible_node() which has increased the refcount
and then call of_node_put() with it when done.

Fixes: 66f23290

 ("ASoC: eukrea-tlv320: Add DT support.")
Co-authored-by: Kelin Wang <wangkelin2023@163.com>
Signed-off-by: Liang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220914134354.3995587-1-windhl@126.com


Signed-off-by: Mark Brown <broonie@kernel.org>

Use regmap_read_poll_timeout to poll I2S_CLR.
It also fixes the 'rockchip-i2s ff070000.i2s; fail to clear' when
the read of I2S_CLR exceeds the retry limit.

Fixes: 0ff9f8b9

 ("ASoC: rockchip: i2s: Fix error code when fail to read I2S_CLR")
Signed-off-by: Judy Hsiao <judyhsiao@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Link: https://lore.kernel.org/r/20220914031234.2250298-1-judyhsiao@chromium.org


Signed-off-by: Mark Brown <broonie@kernel.org>

Since commit 2848d34c ("ASoC: tas2562: Fix mute/unmute") the
following build warning is seen:

sound/soc/codecs/tas2562.c:442:13: warning: variable 'ret' set but not used [-Wunused-but-set-variable]

Fix the warning by returning the 'ret' variable.

Fixes: 2848d34c

 ("ASoC: tas2562: Fix mute/unmute")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Martin Povišer <povik+lin@cutebit.org>
Link: https://lore.kernel.org/r/20220913231706.516849-1-festevam@gmail.com


Signed-off-by: Mark Brown <broonie@kernel.org>

Add a property to control the driving of ADCOUT.

Signed-off-by: David Lin <CTLIN0@nuvoton.com>
Link: https://lore.kernel.org/r/20220913120641.792502-2-CTLIN0@nuvoton.com


Signed-off-by: Mark Brown <broonie@kernel.org>

Add a property to control the driving of ADCOUT.

Signed-off-by: David Lin <CTLIN0@nuvoton.com>
Link: https://lore.kernel.org/r/20220913120641.792502-1-CTLIN0@nuvoton.com


Signed-off-by: Mark Brown <broonie@kernel.org>

In configurations with CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC=n,
gcc warns about an unused variable:

sound/soc/intel/skylake/skl.c: In function ‘probe_codec’:
sound/soc/intel/skylake/skl.c:729:18: error: unused variable ‘skl’ [-Werror=unused-variable]
  struct skl_dev *skl = bus_to_skl(bus);
                  ^~~
cc1: all warnings being treated as errors

Fixes: 3fd63658

 ("ASoC: Intel: Drop hdac_ext usage for codec device creation")
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Acked-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220822035133.2147381-1-cuigaosheng1@huawei.com


Signed-off-by: Mark Brown <broonie@kernel.org>

In the case when a codec device is probed before codec analog
controls, snd_soc_register_card() returns -EPROBE_DEFER, resulting in
a misleading error message

    sun4i-codec 1c22c00.codec: Failed to register our card

even if the device is probed successfully later. Use dev_err_probe()
to demote the above error to a debug message.

Signed-off-by: Mikhail Rudenko <mike.rudenko@gmail.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220911145713.55199-1-mike.rudenko@gmail.com


Signed-off-by: Mark Brown <broonie@kernel.org>

qcom,q6afe is already documented in soc/qcom/qcom,apr.yaml.  The
version-based compatibles ("qcom,q6afe-v<MAJOR-NUMBER>.<MINOR-NUMBER>")
are not used (neither in upstream nor in downstream DTS).

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220910090856.49271-1-krzysztof.kozlowski@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>

This reverts commit b3821f78

 ("arm64: dts: mediatek:
kukui: Remove i2s-share properties") which was mistakenly applied
to the ASoC tree.

Signed-off-by: Mark Brown <broonie@kernel.org>

This patch fixup this warning when CONFIG_PM not defined

linux/sound/soc/codecs/ak4458.c:631:13: error: 'ak4458_reset' defined but\
        not used [-Werror=unused-function]
  631 | static void ak4458_reset(struct ak4458_priv *ak4458, bool active)
      |             ^~~~~~~~~~~~
cc1: all warnings being treated as errors

Fixes: e9e7df88

 ("ASoC: ak4458: Remove component probe() and remove()")
Reported-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1663057594-29141-1-git-send-email-shengjiu.wang@nxp.com


Signed-off-by: Mark Brown <broonie@kernel.org>

Linux 6.0-rc4 so we can test on BeagleBone again.

Merge tag 'kbuild-fixes-v6.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Remove unused scripts/gcc-ld script

 - Add zstd support to scripts/extract-ikconfig

 - Check 'make headers' for UML

 - Fix scripts/mksysmap to ignore local symbols

* tag 'kbuild-fixes-v6.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  mksysmap: Fix the mismatch of 'L0' symbols in System.map
  kbuild: disable header exports for UML in a straightforward way
  scripts/extract-ikconfig: add zstd compression support
  scripts: remove obsolete gcc-ld script

Pull arm64 fixes from Will Deacon:
 "Three small arm64 fixes, all related to optional architecture
  extensions: BTI, SME and 52-bit virtual addressing:

   - Disable in-kernel BTI when compiling with GCC, as it makes invalid
     assumptions about the distance between functions which has led to
     crashes when calling modules on a CPU with BTI support

   - Remove bogus TIF_SME flag management if memory allocation fails in
     the ptrace code

   - Fix the resume path when configured for 52-bit virtual addressing"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: fix resume for 52-bit enabled builds
  arm64/ptrace: Don't clear calling process' TIF_SME on OOM
  arm64/bti: Disable in kernel BTI when cross section thunks are broken

Pull i2c fixes from Wolfram Sang:
 "Only documentation and DT binding fixes and improvements"

* tag 'i2c-for-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  dt-bindings: i2c: renesas,riic: Fix 'unevaluatedProperties' warnings
  docs: i2c: piix4: Fix typos, add markup, drop link
  docs: i2c: i2c-topology: reorder sections more logically
  docs: i2c: i2c-topology: fix incorrect heading
  docs: i2c: i2c-topology: fix typo

Pull iommu fixes from Joerg Roedel:

 - Intel VT-d fixes from Lu Baolu:
     - Boot kdump kernels with VT-d scalable mode on
     - Calculate the right page table levels
     - Fix two recursive locking issues
     - Fix a lockdep splat issue

 - AMD IOMMU fixes:
     - Fix for completion-wait command to use full 64 bits of data
     - Fix PASID related issue where GPU sound devices failed to
       initialize

 - Fix for Virtio-IOMMU to report correct caching behavior, needed for
   use with VFIO

* tag 'iommu-fixes-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu: Fix false ownership failure on AMD systems with PASID activated
  iommu/vt-d: Fix possible recursive locking in intel_iommu_init()
  iommu/virtio: Fix interaction with VFIO
  iommu/vt-d: Fix lockdep splat due to klist iteration in atomic context
  iommu/vt-d: Fix recursive lock issue in iommu_flush_dev_iotlb()
  iommu/vt-d: Correctly calculate sagaw value of IOMMU
  iommu/vt-d: Fix kdump kernels boot failure with scalable mode
  iommu/amd: use full 64-bit value in build_completion_wait()

Pull MIPS fixes from Thomas Bogendoerfer:

 - fix for loongson32 starup hang

 - fix for octeon irq setup problem

 - fix compiler warning for new CONFIG option

 - switch to SPARSEMEM_EXTREME for all platforms selecting SPARSEMEM

* tag 'mips-fixes_6.0_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  mips: Select SPARSEMEM_EXTREME
  MIPS: OCTEON: irq: Fix octeon_irq_force_ciu_mapping()
  MIPS: octeon: Get rid of preprocessor directives around RESERVE32
  MIPS: loongson32: ls1c: Fix hang during startup

The AMD IOMMU driver cannot activate PASID mode on a RID without the RID's
translation being set to IDENTITY. Further it requires changing the RID's
page table layout from the normal v1 IOMMU_DOMAIN_IDENTITY layout to a
different v2 layout.

It does this by creating a new iommu_domain, configuring that domain for
v2 identity operation and then attaching it to the group, from within the
driver. This logic assumes the group is already set to the IDENTITY domain
and is being used by the DMA API.

However, since the ownership logic is based on the group's domain pointer
equaling the default domain to detect DMA API ownership, this causes it to
look like the group is not attached to the DMA API any more. This blocks
attaching drivers to any other devices in the group.

In a real system this manifests itself as the HD-audio devices on some AMD
platforms losing their device drivers.

Work around this unique behavior of the AMD driver by checking for
equality of IDENTITY domains based on their type, not their pointer
value. This allows the AMD driver to have two IDENTITY domains for
internal purposes without breaking the check.

Have the AMD driver properly declare that the special domain it created is
actually an IDENTITY domain.

Cc: Robin Murphy <robin.murphy@arm.com>
Cc: stable@vger.kernel.org
Fixes: 512881ea

 ("bus: platform,amba,fsl-mc,PCI: Add device DMA ownership management")
Reported-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/0-v1-ea566e16b06b+811-amd_owner_jgg@nvidia.com


Signed-off-by: Joerg Roedel <jroedel@suse.de>