Merge tag 'asoc-hdmi-codec-improvements-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into asoc-5.14

Improvements to the hdmi-codec driver and ALSA infrastructure around it
to support the HDMI Channel Mapping and IEC958 controls

The IEC958 status bit is usually set by the userspace after hw_params
has been called, so in order to use whatever is set by the userspace, we
need to implement the prepare hook. Let's add it to the hdmi_codec_ops,
and mandate that either prepare or hw_params is implemented.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210525132354.297468-6-maxime@cerno.tech

The IEC958 status bits can be exposed and modified by the userspace
through dedicated ALSA controls.

This patch implements those controls for the hdmi-codec driver. It
relies on a default value being setup at probe time that can later be
overridden by the control put.

The hw_params callback is then called with a buffer filled with the
proper bits for the current parameters being passed on so the underlying
driver can just reuse those bits as is.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210525132354.297468-5-maxime@cerno.tech

We're going to add more controls to support the IEC958 output, so let's
rework the control registration a bit to support more of them.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210525132354.297468-4-maxime@cerno.tech

In some situations, like a codec probe, we need to provide an IEC status
default but don't have access to the sampling rate and width yet since
no stream has been configured yet.

Each and every driver has its own default, whereas the core iec958 code
also has some buried in the snd_pcm_create_iec958_consumer functions.

Let's split these functions in two to provide a default that doesn't
rely on the sampling rate and width, and another function to fill them
when available.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20210525132354.297468-3-maxime@cerno.tech

The doc currently mentions that the IEC958 Playback Default should be
exposed on the PCM iface, and the Playback Mask on the mixer iface.

It's a bit confusing to advise to have two related controls on two
separate ifaces, and it looks like the drivers that currently expose
those controls use any combination of the mixer and PCM ifaces.

Let's try to clarify the situation a bit, and encourage to at least have
the controls on the same iface.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20210525132354.297468-2-maxime@cerno.tech

Fix following coccicheck warning:
./sound/soc/codecs/wcd934x.c:5136:2-3: Unneeded semicolon
./sound/soc/codecs/wcd934x.c:2466:2-3: Unneeded semicolon
./sound/soc/codecs/wcd934x.c:2527:2-3: Unneeded semicolon
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Link: https://lore.kernel.org/r/20210608030656.24052-1-wanjiabing@vivo.comSigned-off-by: Mark Brown <broonie@kernel.org>

snd_soc_runtime_get_dai_fmt() is using discriminatory terms.
This patch fixup it.

Fixes: ba9e82a1 ("ASoC: soc-core: add snd_soc_runtime_get_dai_fmt()")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/874ke9dxkp.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

If an error occurs after a successful 'of_iomap()' call, it must be undone
by a corresponding 'iounmap()' call, as already done in the remove
function.

While at it, remove the useless initialization of 'ret' at the beginning of
the function.

Fixes: 4bd8597d ("ASoC: mediatek: add btcvsd driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/0c2ba562c3364e61bfbd5b3013a99dfa0d9045d7.1622989685.git.christophe.jaillet@wanadoo.frSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series "ASoC: adds new .auto_selectable_formats support" from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:

Hi Mark

These are v3 of "ASoC: adds new .get_fmt support",
but renamed Subject.

This is a little bit challenging patch-set.
The idea/code is almost same as v1 / v2.
v3 has "priority" support.

We need to set dai_link->dai_fmt to select CPU/Codec settings,
and it is selected by Sound Card Driver, today.

Because of it, Sound Card user need to know both CPU / Codec
available dai_fmt, and needs to select it.
For example simple-card / audio-graph case, it is selected by
"format" and "bitclock/frame-master/inversion" on DT.

But, it can be automatically selected if both CPU and Codec drivers
indicate it to ALSA SoC Framework, somehow.

By this patch, dai_fmt can be automatically selected from each
driver if both CPU / Codec driver had .auto_selectable_formats.
Automatically selectable *field* is depends on each drivers.

For example, some driver want to select format "automatically",
but want to select other fields "manually", because of complex limitation.
Or other example, in case of both CPU and Codec are possible to be
clock provider, but the quality was different.
In these case, user need/want to *manually* select each fields
from Sound Card driver.

It uses Sound Card specified fields preferentially, and try to select
non-specific fields from CPU and Codec driver settings if driver had
.auto_selectable_formats.
In other words, we can select all dai_fmt via Sound Card driver
same as before.

Select dai_fmt 100% automatically is very difficult and will be very complex,
but select automatically some fields only is very easy, I guess.
This patch-set is based on such assumption.

v1 -> v2
	- Add more detail explanation on git-log, code, comment.
	- Possible to be Clock/Frame provider is depends on driver's situation.

v2 -> v3
	- has priority
	- tidyup function explanation for snd_soc_dai_get_fmt()
	- Each driver don't try to have SND_SOC_DAIFMT_CBx_CFx to avoid confusion

Link: https://lore.kernel.org/r/871rb3hypy.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871racbx0w.wl-kuninori.morimoto.gx@renesas.com

Kuninori Morimoto (7):
  ASoC: soc-core: move snd_soc_runtime_set_dai_fmt() to upside
  ASoC: soc-core: add snd_soc_runtime_get_dai_fmt()
  ASoC: ak4613: add .auto_selectable_formats support
  ASoC: pcm3168a: add .auto_selectable_formats support
  ASoC: rsnd: add .auto_selectable_formats support
  ASoC: fsi: add .auto_selectable_formats support
  ASoC: hdmi-codec: add .auto_selectable_formats support

 include/sound/soc-dai.h       |  55 +++++++
 sound/soc/codecs/ak4613.c     |  11 ++
 sound/soc/codecs/hdmi-codec.c |  21 +++
 sound/soc/codecs/pcm3168a.c   |  26 +++
 sound/soc/sh/fsi.c            |  15 ++
 sound/soc/sh/rcar/core.c      |  31 +++-
 sound/soc/soc-core.c          | 288 ++++++++++++++++++++++++++--------
 sound/soc/soc-dai.c           |  63 ++++++++
 sound/soc/soc-utils.c         |  29 ++++
 9 files changed, 475 insertions(+), 64 deletions(-)

--
2.25.1

The pointer node is being initialized with a value that is never read and
it is being updated later with a new value.  The initialization is
redundant and can be removed.

The function is missing a of_node_put on node, fix this by adding the call
before returning.

Addresses-Coverity: ("Unused value")
Fixes: 0d6a04da ("ASoC: Add Rockchip rk817 audio CODEC support")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Tested-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20210603113659.82031-1-colin.king@canonical.comSigned-off-by: Mark Brown <broonie@kernel.org>

Fix the following coccicheck warnings:

./sound/soc/codecs/rk817_codec.c:49:2-3: Unneeded semicolon.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/1622802209-45031-1-git-send-email-jiapeng.chong@linux.alibaba.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge tag 'tb-mfd-asoc-v5.14-1' of https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into asoc-5.14

Immutable branch between MFD and ASoC due for the v5.14 merge window

By this patch, DAI format might be automatically selected
(Depends on paired DAI).

Link: https://lore.kernel.org/r/871rb3hypy.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871racbx0w.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87a6ognc5i.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

By this patch, DAI format might be automatically selected
(Depends on paired DAI).

Link: https://lore.kernel.org/r/871rb3hypy.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871racbx0w.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87bl8wnc5x.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

By this patch, DAI format might be automatically selected
(Depends on paired DAI).

Link: https://lore.kernel.org/r/871rb3hypy.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871racbx0w.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87cztcnc6k.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

By this patch, DAI format might be automatically selected
(Depends on paired DAI).

Link: https://lore.kernel.org/r/871rb3hypy.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871racbx0w.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87eedsnc6z.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

By this patch, DAI format might be automatically selected
(Depends on paired DAI).

Link: https://lore.kernel.org/r/871rb3hypy.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871racbx0w.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87fsy8nc7o.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

ASoC is using dai_link which specify DAI format (= dai_link->dai_fmt),
and it is selected by "Sound Card" driver in corrent implementation.
In other words, Sound Card *needs* to setup it.
But, it should be possible to automatically selected from CPU and
Codec driver settings.

This patch adds new .auto_selectable_formats support
at snd_soc_dai_ops.

By this patch, dai_fmt can be automatically selected from each
driver if both CPU / Codec driver had it.
Automatically selectable *field* is depends on each drivers.

For example, some driver want to select format "automatically",
but want to select other fields "manually", because of complex limitation.
Or other example, in case of both CPU and Codec are possible to be
clock provider, but the quality was different.
In these case, user need/want to *manually* select each fields
from Sound Card driver.

This .auto_selectable_formats can set priority.
For example, no limitaion format can be HI priority,
supported but has picky limitation format can be next priority, etc.

It uses Sound Card specified fields preferentially, and try to select
non-specific fields from CPU and Codec driver automatically
if all drivers have .auto_selectable_formats.

In other words, we can select all dai_fmt via Sound Card driver
same as before.

Link: https://lore.kernel.org/r/871rb3hypy.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871racbx0w.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87h7ionc8s.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

This patch moves snd_soc_runtime_set_dai_fmt() to upside.
This is prepare to support snd_soc_runtime_get_dai_fmt().
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87im34nc9r.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series "ASoC: codecs: wcd934x: add Headset and button detection support" from Srinivas Kandagatla <srinivas.kandagatla@linaro.org>:

This patchset adds support to MBHC(Multi Button Headset Control) block found in
Qualcomm WCD codecs. MBHC support headset type detection, both Mechanical and
electrical insert/removal detection along with 8 buttons detection,
Over current interrupts on HPHL/R, Impedance Measurements on HPHL/R.

Eventhough MBHC block supports things like OverCurrent detection, Currently its
reported as a kernel debug message. Should this be reported as an uevent to
userspace? like the way USB reports?
Any suggestions?

First patch adds a common mbhc driver and the second one wcd934x specific driver
changes along with sdm845 soundcard related changes.

Common wcd-mbhc-v2 driver should be reusable across multiple codecs like
WCD9335, WCD934x, WCD937x and WCD938x.

Most of the work is derived from downstream Qualcomm kernels.
Credits to various Qualcomm authors from Patrick Lai's team who have
contributed to this code.

Changes since v2:
- switched to EXPORT_SYMBOL_GPL from EXPORT_SYMBOL
- converted one of the if else to switch case.

Srinivas Kandagatla (4):
  ASoC: dt-bindings: wcd934x: add bindings for Headset Button detection
  ASoC: codecs: wcd: add multi button Headset detection support
  ASoC: codecs: wcd934x: add mbhc support
  ASoC: qcom: sdm845: add jack support for WCD934x

 .../bindings/sound/qcom,wcd934x.yaml          |   30 +
 include/linux/mfd/wcd934x/registers.h         |   57 +
 sound/soc/codecs/Kconfig                      |    4 +
 sound/soc/codecs/Makefile                     |    2 +
 sound/soc/codecs/wcd-mbhc-v2.c                | 1475 +++++++++++++++++
 sound/soc/codecs/wcd-mbhc-v2.h                |  340 ++++
 sound/soc/codecs/wcd934x.c                    |  884 +++++++++-
 sound/soc/qcom/sdm845.c                       |    8 +
 8 files changed, 2785 insertions(+), 15 deletions(-)
 create mode 100644 sound/soc/codecs/wcd-mbhc-v2.c
 create mode 100644 sound/soc/codecs/wcd-mbhc-v2.h

--
2.21.0

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210604115230.23259-5-srinivas.kandagatla@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

WCD934x has Multi Button Headset Control hardware to support Headset insertion,
type detection, 8 headset buttons detection, Over Current detection and Impedence
measurements.

This patch adds support for this feature via common mbhc layer.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210604115230.23259-4-srinivas.kandagatla@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Most new Qualcomm WCD codecs support MBHC(Multi Button Headset Control) via ADC.

This patchset adds support to Common parts of this MBHC support so that
WCD codecs need not duplicate them. To do that codec exposes set of
register fields and callbacks to this common driver to control it.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210604115230.23259-3-srinivas.kandagatla@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

Add bindings required for Multi Button Headset detection.
WCD934x support Headsets with upto 8 buttons including, impedance measurement
on both L/R Headset speakers and cross connection detection.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210604115230.23259-2-srinivas.kandagatla@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

With CONFIG_SND_SOC_LPASS_RX_MACRO=m and CONFIG_REGMAP_MMIO undefined,
build fails with the following error

  make -f /var/tmp/portage/sys-kernel/stable-sources-5.12.8/work/linux-5.12.8-stable/scripts/Makefile.modpost
    sed 's/\.ko$/\.o/' modules.order | scripts/mod/modpost   -E  -o modules-only.symvers -i vmlinux.symvers   -T -
  ERROR: modpost: "__devm_regmap_init_mmio_clk" [sound/soc/codecs/snd-soc-lpass-rx-macro.ko] undefined!

This does also apply to other Qualcomm Macro LPASS all making call to
devm_regmap_init_mmio()
Signed-off-by: Bertrand Jacquin <bertrand@jacquin.bzh>
Link: https://lore.kernel.org/r/20210603221816.2642402-1-bertrand@jacquin.bzhSigned-off-by: Mark Brown <broonie@kernel.org>

In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a fallthrough; statement.

Link: https://github.com/KSPP/linux/issues/115Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Peter Ujfalusi <peter.ujflausi@gmail.com>
Link: https://lore.kernel.org/r/20210604072714.GA244640@embeddedorSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series "ASoC: rsnd: tidyup adg and header" from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:

Hi Mark

I noticed that adg can be more clean code.
And rsnd.h header comment was not so good
because patch has been randomly added.

This patch tidyup these.

Kuninori Morimoto (5):
  ASoC: rsnd: adg: supply __printf(x, y) formatting for dbg_msg()
  ASoC: rsnd: adg: tidyup rsnd_adg_get_clkin/out() parameter
  ASoC: rsnd: adg: use more simple method for null_clk
  ASoC: rsnd: adg: check return value for rsnd_adg_get_clkin/out()
  ASoC: rsnd: tidyup __rsnd_mod_xxx macro comments

 sound/soc/sh/rcar/adg.c  | 139 +++++++++++++++++++++++++--------------
 sound/soc/sh/rcar/rsnd.h |  21 ++----
 2 files changed, 97 insertions(+), 63 deletions(-)

--
2.25.1

pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yufen Yu <yuyufen@huawei.com>
Link: https://lore.kernel.org/r/20210524093521.612176-1-yuyufen@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

Using devm_snd_soc_register_card() can make the code
shorter and cleaner.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210602133359.310647-1-yangyingliang@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

Most callers of_get_child_count() check that "nr" is non-zero so it
causes a static checker warning when we don't do that here.  This
does not cause a problem or a crash, but having zero SSUIes does not
make sense either so let's add a check.

Addresses-Coverity: ("Unchecked return value")
Fixes: c413983e ("ASoC: rsnd: adjust disabled module")
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210603110315.81146-1-colin.king@canonical.comSigned-off-by: Mark Brown <broonie@kernel.org>

Convert the imx-audmux binding to DT schema format using json-schema
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210531064752.8809-1-o.rempel@pengutronix.deSigned-off-by: Mark Brown <broonie@kernel.org>

module_rpmsg_driver() makes the code simpler by eliminating
boilerplate code.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210602082610.3828408-1-yangyingliang@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

Using devm_snd_soc_register_card() can make the code
shorter and cleaner.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210602141619.323286-1-yangyingliang@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

status and __rsnd_mod_xxx were updated, but some related comments were
not. And it has verbose comments. This patch cleanup/tidyup these.

1) adds missing "D" to status sample
2) remove verbose list for "H"
3) add "needs protect" to __rsnd_mod_call_xxx
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87o8cpi1zs.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Current rsnd_adg_get_clkin/out() are void function,
thus adg->clk/clkout[i] might be NULL.

But, for_each_rsnd_clk/clkout() macros are assuming
all clks are non NULL.

Because of this mismatch, code can be complex and/or buggy.
These functions return error by this patch,
and make sure all clks are non NULL.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87pmx5i20m.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

commit 965386c9 ("ASoC: rsnd: call unregister for null_hw when
removed") tried unregister null_clk, but it has some issues.

1st issue is kernel will indicate below message when unregistering,
because of its timing. unregistering should be happen after clk_disable().

	clk_unregister: unregistering prepared clock: rsnd_adg_null

2nd issue is, it is using priv->null_clk, but it should be adg->null_clk.

3rd issue is it is using very complex clk registering method.
more simple clk_register/unregister_fixed_rate() should be OK.

This patch fixes these.

Fixes: 965386c9 ("ASoC: rsnd: call unregister for null_hw when removed")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87r1hli215.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

set priv->adg before rsnd_adg_get_clkin/out() to be more simple code.
Nothing is changed, but is preparation for
next "ASoC: rsnd: adg: use more simple method for null_clk" patch
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87sg21i21j.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Fixes the following W=1 kernel build warning(s):

sound/soc/sh/rcar/adg.c: In function 'dbg_msg':
sound/soc/sh/rcar/adg.c:594:2: warning: function 'dbg_msg' might \
 be a candidate for 'gnu_printf' format attribute\
 [-Wsuggest-attribute=format]

Fixes: 1f9c82b5 ("ASoC: rsnd: add debugfs support")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87tumhi21r.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Use DEVICE_ATTR_RO() helper instead of plain DEVICE_ATTR(),
which makes the code a bit shorter and easier to read.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20210524115506.35724-1-yuehaibing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>