Add new compatible string for the Rockchip I2S/PCM controller found on
RK3588 and RK3588S SoCs.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20230315114806.3819515-8-cristian.ciocaltea@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>

The binding document is missing the power-domains property. Add it.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20230315114806.3819515-7-cristian.ciocaltea@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>

Document the 'port' property to allow the Rockchip I2S TDM controller to
be used in conjunction with the audio-graph-card.

The property will be used to provide an endpoint for binding to the
other side of the audio link.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20230315114806.3819515-6-cristian.ciocaltea@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>

The Rockchip I2S controller is currently used in conjunction with
audio-graph-card to provide an endpoint for binding with the other side
of the audio link.

This is achieved via the 'port' property, which is not allowed:

  rk3399-rockpro64.dtb: i2s@ff890000: Unevaluated properties are not allowed ('port' was unexpected)

Fix the issue by documenting the missing property.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20230315114806.3819515-5-cristian.ciocaltea@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>

The ES8316 codec is currently used in conjunction with audio-graph-card
to provide an endpoint for binding with the other side of the audio
link.

This is achieved via the 'port' property, which is not allowed:

  rk3399-rockpro64.dtb: codec@11: Unevaluated properties are not allowed ('port' was unexpected)

Fix the issue by documenting the missing property.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20230315114806.3819515-4-cristian.ciocaltea@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:

The following series will add support for IPC4 process modules as effect
widgets.  We can cover wide range of modules as a generic process or
effect module, the patches will lay down the fundation and the generic
code to handle them.

At initialization time process modules can receive additional
information on top of the base_cfg, which is defined as base_cfg_ext, an
extension for the base configuration struct.  Other parameters or blobs
for these modules are sent as a separate message via
LARGE_CONFIG message, which is handled by the existing bytes control support.

Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:

Backend DAIs may support multiple audio formats. Modify pipeline setup to select
a suitable configuration based on topology and frontend DAI runtime configuration.

The prime use case is BT offload support where we need the abality to select
different configuration on the BE side.

yamllint expect space after '#' comment mark:

  renesas,rsnd.yaml:282:4: [error] missing starting space in comment (comments)

Fixes: 7f8b5b24 ("ASoC: dt-bindings: renesas,rsnd.yaml: add R-Car Gen4 support")
Reported-by: Rafał Miłecki <zajec5@gmail.com>
Link: https://lore.kernel.org/all/b2810924-169d-0bad-8f20-6ec2e683d170@gmail.com/Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230317082137.12629-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Fix errors in binding indentation and example:

  adi,adau17x1.yaml:8:2: [warning] wrong indentation: expected 2 but found 1 (indentation)
  adi,adau17x1.example.dts:29.3-30.1 syntax error

Fixes: 87771c94 ("ASoC: dt-bindings: adi,adau17x1: Convert to DT schema")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230317092900.16770-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

If the available_fmt->num_input_formats is 0 and there is a failure during
the output format parsing then a kfree() would be called on the
uninitialized in_format pointer.

By initializing the in_format to NULL, this error can be avoided.

Fixes: 7ab6b1e8 ("ASoC: SOF: ipc4-topology: Modify the type of available input/output formats")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20230317063524.8280-1-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Some modules may modify the audio format during processing. So, update the
pipeline params based on pin 0's output format during process prepare.
Signed-off-by: Libin Yang <libin.yang@intel.com>
Co-developed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-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: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Chao Song <chao.song@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230316151137.7598-7-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

The copier output pin 0 format is set with module instance
initialization, format for additional copier output pin
should be set before the pin is used.

If a process module is connected to additional copier output
pin, the copier output pin format should be set according to
the corresponding input pin format of the process module.
Signed-off-by: Chao Song <chao.song@linux.intel.com>
Co-developed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230316151137.7598-6-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Some processing modules need the audio formats for all their input and
output pins appended to the base config during module init. So add support
for building the base config extension using the available pin formats
from topology.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230316151137.7598-5-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

The modules currently supported by the SOF firmware use the base module
config containing the audio format for the input/output pin 0 for
initialization. But some processing modules with multiple input/output
pins require the audio formats to be sent with the init instance IPC
payload. Modules that require the base config extension will need to
indicate this in the module information in the firmware manifest.

Introduce a new struct sof_ipc4_base_module_cfg_ext which contains the
pin formats for the input and output pins. This will be appended to the
init instance IPC payload for modules that require it.
Signed-off-by: Chao Song <chao.song@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230316151137.7598-4-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add the general support of IPC4 effect widgets.

IPC4 effect widgets, known as process modules,  can be EQFIR,
EQIIR, KEYWORD_DETECT, KPB, CHAN_SELECTOR, SMART_AMP and etc.
Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230316151137.7598-3-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Introduce a helper function to update the message template for a kcontrol
associated with a widget.

In this way the helper can be re-used by other components later.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Jaska Uimonen <jaska.uimonen@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20230316151137.7598-2-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Use the ipc4_set_fmt_mask() helper function instead of open-coding
the logic in multiple places.
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230316141458.13940-3-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Backend DAIs may support multiple audio formats. Modify pipeline
setup to select a suitable configuration based on topology and
frontend DAI runtime configuration.

For sampling rate, if one of the BE DAI configurations has
a sampling rate matching that of FE DAI, configure BE DAI to
this rate.

For sample format, the current code hardcodes DAI copier sample format
to 32bit for both playback and capture pipelines. This is not always
desired, so lift the limitation and set the sample format based on
topology definitions for the copiers. For capture pipelines, we want to
set the BE DAI pipeline format based on topology instead of using the FE
DAI format. This covers the common use-case where BE DAI outputs data at
a higher sample precision and sample width is reduced later in the
pipeline. Instead of hardcoding to 32bit, use the BE DAI copier output
format defined in topology.
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230316141458.13940-2-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Convert Maxim MAX9759 Speaker Amplifier bindings to DT schema.
Add missing gpio header file into examples section
Signed-off-by: Otabek Nazrullaev <otabeknazrullaev1998@gmail.com>
Cc: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230315173404.7215-1-otabeknazrullaev1998@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

Convert the binding document for adi,adau17x1 from txt to yaml
so one could validate dt-entries correctly and any future additions
can go into yaml format. Add address and size cells to example to
prevent errors regarding reg format.
Signed-off-by: Vijaya Anand <sunrockers8@gmail.com>
Cc: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230315231055.3067-1-sunrockers8@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

Miscellaneous updates to make the example match reality:
  - Correct SSI resource region size,
  - Complete half-conversion to new-style CPG/MSSR bindings,
  - Add missing power-domains, resets, and reset-names properties,
  - Use interrupt binding definitions instead of hardcoded numbers,
  - Correct interrupt flags,
  - Drop double blank line.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/ba4ec999dc152ea1f113253e497c093b8789d414.1678790879.git.geert+renesas@glider.beSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series from "Nícolas F. R. A. Prado" <nfraprado@collabora.com>:

A couple commits to make the mt8192 sound driver not spam the console.

The QMC depends on (SOC_FSL && COMPILE_TEST). SOC_FSL does not exist.

Fix the dependency using the correct one: FSL_SOC.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20230314082157.137176-1-herve.codina@bootlin.comSigned-off-by: Mark Brown <broonie@kernel.org>

substream->runtime will be attached when substream was opened
at snd_pcm_attach_substream(). When it uses DPCM,
FE substream->runtime is attached, but BE substream->runtime is not.
Thus, we are copying FE substream->runtime to BE.

But, we are copyig FE substream->runtime to FE dpcm->runtime first (A),
and copy it to BE dpcm->runtime (B), and copy it to
BE substream->runtime (C).

	static int dpcm_fe_dai_open(...) {
		...
(A)		fe->dpcm[stream].runtime = fe_substream->runtime;
		...
	}

	static int dpcm_be_connect(...) {
		...
(B)		be->dpcm[stream].runtime = fe->dpcm[stream].runtime;
		...
	}

	int dpcm_be_dai_startup(...) {
		...
(C)		be_substream->runtime = be->dpcm[stream].runtime;
		...
	}

It is too roundabout and troublesome.
OTOH, it is directly copying fe_substream->runtime at dpcm_be_reparent()
without using be->dpcm[stream].runtime.

	static void dpcm_be_reparent(...)
	{
		...
		for_each_dpcm_fe(be, stream, dpcm) {
			...
=>			be_substream->runtime = fe_substream->runtime;
			break;
		}
	}

This patch removes indirect copying.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87v8je64dh.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

dai->probed is used at snd_soc_pcm_dai_probe/remove(),
and used to call real remove() function only when it was probed.

	int snd_soc_pcm_dai_probe(...)
	{
		...
		for_each_rtd_dais(rtd, i, dai) {
			...

			if (dai->driver->probe) {
(A)				int ret = dai->driver->probe(dai);

				if (ret < 0)
					return soc_dai_ret(dai, ret);
			}

=>			dai->probed = 1;
		}
		...
	}

	int snd_soc_pcm_dai_remove(...)
	{
		...
		for_each_rtd_dais(rtd, i, dai) {
			...
=>			if (dai->probed &&
			    ...) {
				...
			}

=>			dai->probed = 0;
		}
		...
	}

But on probe() case, we need to check dai->probed before calling
real probe() function at (A), otherwise real probe() might be called
multi times (but real remove() will be called only once).
This patch checks it at probe().
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87wn3u64e6.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:

The modules in IPC4 can have multiple 'pins' on their input and output
and these pins can receive or output audio in different formats.
Currently we assume that all pins are using the same format which is a
limitation that needs to be lifted in order to support more complex
components.

This series will extend and rework the format handling to allow
different formats on pins.

Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:

This series will add support for bytes control and topology types.
With IPC4 only the binary payload is sent to the firmware via LARGE_CONFIG
message (which does similar multi-part message handling as the IPC3 control
message did).

The bytes payload itself is not checked by the kernel but user space expected to
wrap it in sof_abi_hdr struct in order to get the target information of the
binary data.

The SOF firmware and sof-ctl have been updated to support blobs used in IPC4
setups.

There are many log messages throughout the mt8192 sound drivers that
print to the info level and are triggered very frequently. Move these
messages to the debug level to avoid spamming the console.
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230313212908.2282961-3-nfraprado@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>

There are some log messages in the mt8192 sound code that print the
function name, presumably to aid in tracing. However this can also be
achieved by ftrace and without spamming the console, so remove these
messages.
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/167874298172.26.17917791030607314817@mailman-core.alsa-project.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Enable Bluetooth audio offload for drv_name "adl_rt1019_rt5682" with
following board configuration specifically:

SSP0 - rt5682 Headset
SSP1 - alc1019p speaker amp
SSP2 - Bluetooth audio
Signed-off-by: Ajye Huang <ajye_huang@compal.corp-partner.google.com>
Signed-off-by: Mac Chiang <mac.chiang@intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20230310184201.1302232-1-ajye_huang@compal.corp-partner.google.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series from Trevor Wu <trevor.wu@mediatek.com>:

Coverity reports some UNINIT and CERT STR31-C problems, so we add
initialization and dai id check to resolve problems.

The driver can be compile tested with !CONFIG_OF making certain data
unused:

  sound/soc/codecs/zl38060.c:611:34: error: ‘zl38_dt_ids’ defined but not used [-Werror=unused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230310214333.274903-10-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

The driver can be compile tested with !CONFIG_OF making certain data
unused:

  sound/soc/codecs/src4xxx-i2c.c:27:34: error: ‘src4xxx_of_match’ defined but not used [-Werror=unused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230310214333.274903-9-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

The driver can be compile tested with !CONFIG_OF making certain data
unused:

  sound/soc/codecs/rt1019.c:549:34: error: ‘rt1019_of_match’ defined but not used [-Werror=unused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230310214333.274903-8-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

The driver can be compile tested with !CONFIG_OF making certain data
unused:

  sound/soc/codecs/pcm179x-spi.c:32:34: error: ‘pcm179x_of_match’ defined but not used [-Werror=unused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230310214333.274903-7-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

The driver can be compile tested with !CONFIG_OF making certain data
unused:

  sound/soc/codecs/adau1977-spi.c:58:34: error: ‘adau1977_spi_of_match’ defined but not used [-Werror=unused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230310214333.274903-6-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

smatch reports
sound/soc/codecs/sma1303.c:1594:28:
  warning: symbol 'sma_i2c_regmap' was not declared. Should it be static?

sma_i2c_regmap is only used in sma1303, so it should be static
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20230309140959.2616497-1-trix@redhat.comSigned-off-by: Mark Brown <broonie@kernel.org>

During route setup, playback stream routes are setup by going through
sink path, capture stream routes are set up by going through source path.
This is not sufficient to handle loopback cases between pipelines
configured with different directions, e.g. a sidetone or an amplifier
feedback connected to a speaker protection module. So, add the logic to
handle such routes between widgets that aren't in the list of DAPM widgets
associated with the same PCM.

Link: https://github.com/thesofproject/linux/issues/4042Suggested-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Chao Song <chao.song@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230313101302.20950-1-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Coverity shows decaring variable reg without initializer. When
regmap_read returns an error, reg keeps the value left from earlier
computation. To prevent from the unexpected result in the case, assign
0 to reg.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20230307040938.7484-5-trevor.wu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

Coverity shows decaring variable reg without initializer. When
regmap_read returns an error, reg keeps the value left from earlier
computation. To prevent from the unexpected result in the case, assign
0 to reg.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20230307040938.7484-4-trevor.wu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>