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CM106L, CM6206, CM6206-LX
by James Lehman 22 Apr '24

22 Apr '24

Hello everyone. I have been using CMedia USB sound devices to make laser control signals for many years. I have sound devices with CM106L, CM6206 and CM6206-LX. Some are populated for 6 channels and some for 8. The CM106L chip works perfectly. I can send it a stream of 16-bit data that uses the full range of -32767 to +32767 and at 100% volume in either alsamixer or Pulseaudio Volume Control, I get a perfect image. https://laserboy.org/piDAC/perfect_circle.jpg If I use a device with a CM6206, I get a very near perfect image (only clipped a tiny bit). But If I use a CM6206-LX chip, it clips hard. https://laserboy.org/piDAC/CM6206-LX_100.jpg Even if I reduce the volume to 50%, it just seems to reduce the clipped signals. https://laserboy.org/piDAC/CM6206-LX_50.jpg I'm not sure what is going on here, but it seems like there is some kind of internal digital gain of more than 1.0. I also notice that lsusb shows exactly the same device ID for both the CM6206 and the CM6206-LX. .... 0d8c:0102 C-Media Electronics, Inc. CM106 Like Sound Device And what's really weird is that a genuine CM106L shows up as something else! .... 0d8c:0006 C-Media Electronics, Inc. Storm HP-USB500 5.1 Headset Is there something I can do in alsa config to fix this issue? The CM106L is long since out of production and it seems like any device that uses the CM6206 might have the LX version (or not). There's no way to know until I get them and open them up. I'm using this on an Orange Pi Zero 3 4gb running dietpi with the 6.6.16-current-sunxi64 kernel, but that doesn't seem to matter. I get the same results any other way I try it. The LX version of this chip clips the same way in Windows too! Thanks for your time. James.

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[tiwai-sound:for-next 34/51] sound/usb/mixer_scarlett2.c:3690 scarlett2_ag_target_ctl_get() error: uninitialized symbol 'err'.
by Dan Carpenter 22 Apr '24

22 Apr '24

tree: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-next head: 32cb23a0f911317cdb5030035e49a204aa86fef5 commit: e30ea5340c25d41484d551f61d8c93106989019b [34/51] ALSA: scarlett2: Add autogain target controls config: csky-randconfig-r081-20240420 (https://download.01.org/0day-ci/archive/20240420/202404201509.mWdaL3xF-lkp@…) compiler: csky-linux-gcc (GCC) 13.2.0 If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Reported-by: Dan Carpenter <dan.carpenter(a)linaro.org> | Closes: https://lore.kernel.org/r/202404201509.mWdaL3xF-lkp@intel.com/ New smatch warnings: sound/usb/mixer_scarlett2.c:3690 scarlett2_ag_target_ctl_get() error: uninitialized symbol 'err'. vim +/err +3690 sound/usb/mixer_scarlett2.c e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3665 static int scarlett2_ag_target_ctl_get( e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3666 struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol) e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3667 { e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3668 struct usb_mixer_elem_info *elem = kctl->private_data; e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3669 struct usb_mixer_interface *mixer = elem->head.mixer; e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3670 struct scarlett2_data *private = mixer->private_data; e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3671 int err; e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3672 e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3673 mutex_lock(&private->data_mutex); e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3674 e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3675 if (private->hwdep_in_use) { e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3676 err = -EBUSY; e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3677 goto unlock; e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3678 } e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3679 e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3680 if (private->autogain_updated) { e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3681 err = scarlett2_update_autogain(mixer); e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3682 if (err < 0) e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3683 goto unlock; e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3684 } err uninitialized on else path. e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3685 e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3686 ucontrol->value.integer.value[0] = private->ag_targets[elem->control]; e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3687 e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3688 unlock: e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3689 mutex_unlock(&private->data_mutex); e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 @3690 return err; e30ea5340c25d41 Geoffrey D. Bennett 2024-03-13 3691 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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snd_hda_intel with buffer_size set to 32768 sounds horrible. Kernel driver bug?
by Jaime 22 Apr '24

22 Apr '24

Fresh Debian Bookworm (v12) installation with alsa but no sound server. aplay with no .asoundrc sounds great (default buffer_size is 16384). If I force the buffer_size to 32768 ([1]), then aplay sounds horrible ([2]). Is this a kernel driver bug? (If yes, I'll log it at https://bugzilla.kernel.org) I discovered this bug because pipewire sets the buffer_size to 32768 hence it triggers this bug - I've logged a bug against pipewire at [3]. Output from alsa-info at [4]. TIA. [1] To set aplay's buffer_size to 32768, I use the following ~/.asoundrc: pcm.!default { type plug slave { pcm { type dmix ipc_key 1234 slave { period_size 1024 buffer_size 32768 pcm "hw:0" format S32_LE } } } } [2] Upload of horrible sound at https://audio.com/jt-1796478503182974/audio/alsaonlybuf-32768nopipewire [3] https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/3966 [4] http://alsa-project.org/db/?f=5dbfb02c81bb1523505c725a189b6f0133f2b3d7

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[PATCH v2 0/8] ASoC: codecs: wcd937x: add wcd937x audio codec support
by Mohammad Rafi Shaik 22 Apr '24

22 Apr '24

This patchset adds support for Qualcomm WCD937X codec. Qualcomm WCD9370/WCD9375 Codec is a standalone Hi-Fi audio codec IC connected over SoundWire. This device has two SoundWire devices, RX and TX respectively supporting 3 x ADCs, ClassH, Ear, Aux PA, 2xHPH, 6 DMICs and MBHC. For codec driver to be functional it would need both tx and rx Soundwire devices to be up and this is taken care by using device component framework and device-links are used to ensure proper pm dependencies. Ex tx does not enter suspend before rx or codec is suspended. This patchset along with other SoundWire patches on the list have been tested on QCM6490 IDP device. Changes since v8: - Split the patch per driver for easier review as suggested by Krzysztof - Used devm_gpiod_get api to get reset gpio as suggested by Krzysztof Prasad Kumpatla (8): ASoC: dt-bindings: wcd937x: add bindings for wcd937x ASoC: codecs: wcd937x: add wcd937x codec driver ASoC: dt-bindings: wcd937x-sdw: add bindings for wcd937x-sdw ASoC: codecs: wcd937x-sdw: add SoundWire driver ASoC: codecs: wcd937x: add basic controls ASoC: codecs: wcd937x: add playback dapm widgets ASoC: codecs: wcd937x: add capture dapm widgets ASoC: codecs: wcd937x: add audio routing and Kconfig .../bindings/sound/qcom,wcd937x-sdw.yaml | 71 + .../bindings/sound/qcom,wcd937x.yaml | 119 + sound/soc/codecs/Kconfig | 20 + sound/soc/codecs/Makefile | 7 + sound/soc/codecs/wcd937x-sdw.c | 1148 +++++++ sound/soc/codecs/wcd937x.c | 3036 +++++++++++++++++ sound/soc/codecs/wcd937x.h | 655 ++++ 7 files changed, 5056 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd937x-sdw.yaml create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml create mode 100644 sound/soc/codecs/wcd937x-sdw.c create mode 100644 sound/soc/codecs/wcd937x.c create mode 100644 sound/soc/codecs/wcd937x.h base-commit: 6bd343537461b57f3efe5dfc5fc193a232dfef1e -- 2.25.1

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sof-hda-dsp/sof-soundwire: Create "hdmi:" mapping PCMs to allow passthrough if supported
by GitHub pull_request - opened 22 Apr '24

22 Apr '24

alsa-project/alsa-ucm-conf pull request #411 was opened from ujfalusi: Hi, SOF with IPC4 can use 'ChainDMA' on selected PCMs (HDMI/DP currently) which allows them to be used for bytestream passthrough since the data is passed through unmodified. The kernel will list the PCMs with ChainDMA to the card's components list: https://github.com/thesofproject/linux/pull/4921 For example for sof-dsp-hda cards `iec61937-pcm:5,4,3` will be added. For user space to use HDMI passthrough, the `hdmi:` PCM device should be present correctly mapping to the machine, for example for sof-dsp-hda: ``` aplay -L | grep hdmi hdmi:CARD=sofhdadsp,DEV=0 hdmi:CARD=sofhdadsp,DEV=1 hdmi:CARD=sofhdadsp,DEV=2 ``` This PR does this by 1. Checking the `iec61937-pcm` indexes against the expected HDMI devices (sof-dsp-hda: 3-5, sof-soundwire: 5-7) 2. If there is a match (passthrough can be supported) then we will create three conf files: The generated files are: [1] /var/lib/alsa/conf.d/42-sof-hdmi.conf [2] /var/lib/alsa/card[card_number].conf.d/30-sof-hdmi-common.conf [3] /var/lib/alsa/card[card_number].conf.d/31-sof-hdmi.conf [1] includes the pcm/iec958.conf and pcm/hdmi.conf to global space of alsaconf to be used by the card macros [2] Card specific macros for hdmi PCM definition, mapping [3] Card specific definitions of the three HDMI port Note for [1]: I needed to use `shell "echo '...` since the `cfg-save` would expand the includes into the saved config file and that just does not result a working alsa configuration. @perexg, I'm sure all this can be done in a cleaner way... We cannot do this unconditionally as if the HDMI is not using ChainDMA (and SOF is not IPC4) then the passthrough is not possible since the firmware might touch the data. Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/411 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/411.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf

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[PATCH 00/34] address all -Wunused-const warnings
by Arnd Bergmann 22 Apr '24

22 Apr '24

From: Arnd Bergmann <arnd(a)arndb.de> Compilers traditionally warn for unused 'static' variables, but not if they are constant. The reason here is a custom for C++ programmers to define named constants as 'static const' variables in header files instead of using macros or enums. In W=1 builds, we get warnings only static const variables in C files, but not in headers, which is a good compromise, but this still produces warning output in at least 30 files. These warnings are almost all harmless, but also trivial to fix, and there is no good reason to warn only about the non-const variables being unused. I've gone through all the files that I found using randconfig and allmodconfig builds and created patches to avoid these warnings, with the goal of retaining a clean build once the option is enabled by default. Unfortunately, there is one fairly large patch ("drivers: remove incorrect of_match_ptr/ACPI_PTR annotations") that touches 34 individual drivers that all need the same one-line change. If necessary, I can split it up by driver or by subsystem, but at least for reviewing I would keep it as one piece for the moment. Please merge the individual patches through subsystem trees. I expect that some of these will have to go through multiple revisions before they are picked up, so anything that gets applied early saves me from resending. Arnd Arnd Bergmann (31): powerpc/fsl-soc: hide unused const variable ubsan: fix unused variable warning in test module platform: goldfish: remove ACPI_PTR() annotations i2c: pxa: hide unused icr_bits[] variable 3c515: remove unused 'mtu' variable tracing: hide unused ftrace_event_id_fops Input: synaptics: hide unused smbus_pnp_ids[] array power: rt9455: hide unused rt9455_boost_voltage_values efi: sysfb: don't build when EFI is disabled clk: ti: dpll: fix incorrect #ifdef checks apm-emulation: hide an unused variable sisfb: hide unused variables dma/congiguous: avoid warning about unused size_bytes leds: apu: remove duplicate DMI lookup data iio: ad5755: hook up of_device_id lookup to platform driver greybus: arche-ctrl: move device table to its right location lib: checksum: hide unused expected_csum_ipv6_magic[] sunrpc: suppress warnings for unused procfs functions comedi: ni_atmio: avoid warning for unused device_ids[] table iwlegacy: don't warn for unused variables with DEBUG_FS=n drm/komeda: don't warn for unused debugfs files firmware: qcom_scm: mark qcom_scm_qseecom_allowlist as __maybe_unused crypto: ccp - drop platform ifdef checks usb: gadget: omap_udc: remove unused variable isdn: kcapi: don't build unused procfs code cpufreq: intel_pstate: hide unused intel_pstate_cpu_oob_ids[] net: xgbe: remove extraneous #ifdef checks Input: imagis - remove incorrect ifdef checks sata: mv: drop unnecessary #ifdef checks ASoC: remove incorrect of_match_ptr/ACPI_PTR annotations spi: remove incorrect of_match_ptr annotations drivers: remove incorrect of_match_ptr/ACPI_PTR annotations kbuild: always enable -Wunused-const-variable Krzysztof Kozlowski (1): Input: stmpe-ts - mark OF related data as maybe unused arch/powerpc/sysdev/fsl_msi.c | 2 + drivers/ata/sata_mv.c | 64 +++++++++---------- drivers/char/apm-emulation.c | 5 +- drivers/char/ipmi/ipmb_dev_int.c | 2 +- drivers/char/tpm/tpm_ftpm_tee.c | 2 +- drivers/clk/ti/dpll.c | 10 ++- drivers/comedi/drivers/ni_atmio.c | 2 +- drivers/cpufreq/intel_pstate.c | 2 + drivers/crypto/ccp/sp-platform.c | 14 +--- drivers/dma/img-mdc-dma.c | 2 +- drivers/firmware/efi/Makefile | 3 +- drivers/firmware/efi/sysfb_efi.c | 2 - drivers/firmware/qcom/qcom_scm.c | 2 +- drivers/fpga/versal-fpga.c | 2 +- .../gpu/drm/arm/display/komeda/komeda_dev.c | 8 --- drivers/hid/hid-google-hammer.c | 6 +- drivers/i2c/busses/i2c-pxa.c | 2 +- drivers/i2c/muxes/i2c-mux-ltc4306.c | 2 +- drivers/i2c/muxes/i2c-mux-reg.c | 2 +- drivers/iio/dac/ad5755.c | 1 + drivers/input/mouse/synaptics.c | 2 + drivers/input/touchscreen/imagis.c | 4 +- drivers/input/touchscreen/stmpe-ts.c | 2 +- drivers/input/touchscreen/wdt87xx_i2c.c | 2 +- drivers/isdn/capi/Makefile | 3 +- drivers/isdn/capi/kcapi.c | 7 +- drivers/leds/leds-apu.c | 3 +- drivers/mux/adg792a.c | 2 +- drivers/net/ethernet/3com/3c515.c | 3 - drivers/net/ethernet/amd/xgbe/xgbe-platform.c | 8 --- drivers/net/ethernet/apm/xgene-v2/main.c | 2 +- drivers/net/ethernet/hisilicon/hns_mdio.c | 2 +- drivers/net/wireless/intel/iwlegacy/4965-rs.c | 15 +---- drivers/net/wireless/intel/iwlegacy/common.h | 2 - drivers/platform/goldfish/goldfish_pipe.c | 2 +- drivers/power/supply/rt9455_charger.c | 2 + drivers/regulator/pbias-regulator.c | 2 +- drivers/regulator/twl-regulator.c | 2 +- drivers/regulator/twl6030-regulator.c | 2 +- drivers/rtc/rtc-fsl-ftm-alarm.c | 2 +- drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 2 +- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 2 +- drivers/spi/spi-armada-3700.c | 2 +- drivers/spi/spi-img-spfi.c | 2 +- drivers/spi/spi-meson-spicc.c | 2 +- drivers/spi/spi-meson-spifc.c | 2 +- drivers/spi/spi-orion.c | 2 +- drivers/spi/spi-pic32-sqi.c | 2 +- drivers/spi/spi-pic32.c | 2 +- drivers/spi/spi-rockchip.c | 2 +- drivers/spi/spi-s3c64xx.c | 2 +- drivers/spi/spi-st-ssc4.c | 2 +- drivers/staging/greybus/arche-apb-ctrl.c | 1 + drivers/staging/greybus/arche-platform.c | 9 +-- drivers/staging/pi433/pi433_if.c | 2 +- drivers/tty/serial/amba-pl011.c | 6 +- drivers/tty/serial/ma35d1_serial.c | 2 +- drivers/usb/gadget/udc/omap_udc.c | 10 +-- drivers/video/fbdev/sis/init301.c | 3 +- kernel/dma/contiguous.c | 2 +- kernel/trace/trace_events.c | 4 ++ lib/checksum_kunit.c | 2 + lib/test_ubsan.c | 2 +- net/sunrpc/cache.c | 10 +-- scripts/Makefile.extrawarn | 1 - sound/soc/atmel/sam9x5_wm8731.c | 2 +- sound/soc/codecs/rt5514-spi.c | 2 +- sound/soc/qcom/lpass-sc7280.c | 2 +- sound/soc/samsung/aries_wm8994.c | 2 +- 69 files changed, 121 insertions(+), 169 deletions(-) -- 2.39.2 Cc: Michael Ellerman <mpe(a)ellerman.id.au> Cc: Christophe Leroy <christophe.leroy(a)csgroup.eu> Cc: Damien Le Moal <dlemoal(a)kernel.org> Cc: Jiri Kosina <jikos(a)kernel.org> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Cc: Corey Minyard <minyard(a)acm.org> Cc: Peter Huewe <peterhuewe(a)gmx.de> Cc: Jarkko Sakkinen <jarkko(a)kernel.org> Cc: Tero Kristo <kristo(a)kernel.org> Cc: Stephen Boyd <sboyd(a)kernel.org> Cc: Ian Abbott <abbotti(a)mev.co.uk> Cc: H Hartley Sweeten <hsweeten(a)visionengravers.com> Cc: Srinivas Pandruvada <srinivas.pandruvada(a)linux.intel.com> Cc: Len Brown <lenb(a)kernel.org> Cc: "Rafael J. Wysocki" <rafael(a)kernel.org> Cc: John Allen <john.allen(a)amd.com> Cc: Herbert Xu <herbert(a)gondor.apana.org.au> Cc: Vinod Koul <vkoul(a)kernel.org> Cc: Ard Biesheuvel <ardb(a)kernel.org> Cc: Bjorn Andersson <andersson(a)kernel.org> Cc: Moritz Fischer <mdf(a)kernel.org> Cc: Liviu Dudau <liviu.dudau(a)arm.com> Cc: Benjamin Tissoires <benjamin.tissoires(a)redhat.com> Cc: Andi Shyti <andi.shyti(a)kernel.org> Cc: Michael Hennerich <michael.hennerich(a)analog.com> Cc: Peter Rosin <peda(a)axentia.se> Cc: Lars-Peter Clausen <lars(a)metafoo.de> Cc: Jonathan Cameron <jic23(a)kernel.org> Cc: Dmitry Torokhov <dmitry.torokhov(a)gmail.com> Cc: Markuss Broks <markuss.broks(a)gmail.com> Cc: Alexandre Torgue <alexandre.torgue(a)foss.st.com> Cc: Lee Jones <lee(a)kernel.org> Cc: Jakub Kicinski <kuba(a)kernel.org> Cc: Shyam Sundar S K <Shyam-sundar.S-k(a)amd.com> Cc: Iyappan Subramanian <iyappan(a)os.amperecomputing.com> Cc: Yisen Zhuang <yisen.zhuang(a)huawei.com> Cc: Stanislaw Gruszka <stf_xl(a)wp.pl> Cc: Kalle Valo <kvalo(a)kernel.org> Cc: Sebastian Reichel <sre(a)kernel.org> Cc: Tony Lindgren <tony(a)atomide.com> Cc: Mark Brown <broonie(a)kernel.org> Cc: Alexandre Belloni <alexandre.belloni(a)bootlin.com> Cc: Xiang Chen <chenxiang66(a)hisilicon.com> Cc: "Martin K. Petersen" <martin.petersen(a)oracle.com> Cc: Neil Armstrong <neil.armstrong(a)linaro.org> Cc: Heiko Stuebner <heiko(a)sntech.de> Cc: Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> Cc: Vaibhav Hiremath <hvaibhav.linux(a)gmail.com> Cc: Alex Elder <elder(a)kernel.org> Cc: Jiri Slaby <jirislaby(a)kernel.org> Cc: Jacky Huang <ychuang3(a)nuvoton.com> Cc: Helge Deller <deller(a)gmx.de> Cc: Christoph Hellwig <hch(a)lst.de> Cc: Robin Murphy <robin.murphy(a)arm.com> Cc: Steven Rostedt <rostedt(a)goodmis.org> Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: Andrew Morton <akpm(a)linux-foundation.org> Cc: Kees Cook <keescook(a)chromium.org> Cc: Trond Myklebust <trond.myklebust(a)hammerspace.com> Cc: Anna Schumaker <anna(a)kernel.org> Cc: Masahiro Yamada <masahiroy(a)kernel.org> Cc: Nathan Chancellor <nathan(a)kernel.org> Cc: Takashi Iwai <tiwai(a)suse.com> Cc: linuxppc-dev(a)lists.ozlabs.org Cc: linux-kernel(a)vger.kernel.org Cc: linux-ide(a)vger.kernel.org Cc: openipmi-developer(a)lists.sourceforge.net Cc: linux-integrity(a)vger.kernel.org Cc: linux-omap(a)vger.kernel.org Cc: linux-clk(a)vger.kernel.org Cc: linux-pm(a)vger.kernel.org Cc: linux-crypto(a)vger.kernel.org Cc: dmaengine(a)vger.kernel.org Cc: linux-efi(a)vger.kernel.org Cc: linux-arm-msm(a)vger.kernel.org Cc: linux-fpga(a)vger.kernel.org Cc: dri-devel(a)lists.freedesktop.org Cc: linux-input(a)vger.kernel.org Cc: linux-i2c(a)vger.kernel.org Cc: linux-iio(a)vger.kernel.org Cc: linux-stm32(a)st-md-mailman.stormreply.com Cc: linux-arm-kernel(a)lists.infradead.org Cc: netdev(a)vger.kernel.org Cc: linux-leds(a)vger.kernel.org Cc: linux-wireless(a)vger.kernel.org Cc: linux-rtc(a)vger.kernel.org Cc: linux-scsi(a)vger.kernel.org Cc: linux-spi(a)vger.kernel.org Cc: linux-amlogic(a)lists.infradead.org Cc: linux-rockchip(a)lists.infradead.org Cc: linux-samsung-soc(a)vger.kernel.org Cc: greybus-dev(a)lists.linaro.org Cc: linux-staging(a)lists.linux.dev Cc: linux-serial(a)vger.kernel.org Cc: linux-usb(a)vger.kernel.org Cc: linux-fbdev(a)vger.kernel.org Cc: iommu(a)lists.linux.dev Cc: linux-trace-kernel(a)vger.kernel.org Cc: kasan-dev(a)googlegroups.com Cc: linux-hardening(a)vger.kernel.org Cc: linux-nfs(a)vger.kernel.org Cc: linux-kbuild(a)vger.kernel.org Cc: alsa-devel(a)alsa-project.org Cc: linux-sound(a)vger.kernel.org

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[PATCH 0/2] ASoC: Intel: avs: Switch to acpi-nhlt
by Cezary Rojewski 22 Apr '24

22 Apr '24

The change is based on rafael/acpi-nhlt [1] immutable branch which Rafael kindly prepared for me. Without the topmost changes to ACPI/NHLT, the patches present will fail to compile. Recent changes for the ACPI tree [2] refactored interfaces of the NHLT table. Currently we have two implementations - one found in acpi subsystem (unused) and one in sound/hda/. As NHLT is part of ACPI, idea is to make the former useful and then switch all users of existing sound/hda/intel-nhlt.c to this new interface over time and remove the duplicate afterward. Two patches present here migrate the avs-driver and the intel-dsp-config module. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/?h=acpi… [2]: https://lore.kernel.org/linux-acpi/20240319083018.3159716-1-cezary.rojewski… Amadeusz Sławiński (2): ALSA: hda: intel-dsp-config: Switch to ACPI NHLT ASoC: Intel: avs: Switch to ACPI NHLT sound/hda/Kconfig | 1 + sound/hda/intel-dsp-config.c | 16 ++++++++------ sound/soc/intel/Kconfig | 1 + sound/soc/intel/avs/avs.h | 1 - sound/soc/intel/avs/board_selection.c | 7 +++--- sound/soc/intel/avs/core.c | 10 ++++----- sound/soc/intel/avs/path.c | 32 +++++++++++++-------------- 7 files changed, 34 insertions(+), 34 deletions(-) base-commit: a640acab545b21ed1f347376f34d34e461ea92ba -- 2.25.1

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[PATCH v2 0/3] ASoC: nau8821: Add delay control for ADC
by Seven Lee 22 Apr '24

22 Apr '24

Change the original fixed delay to the assignment from the property. It will make it more flexible to different platforms to avoid pop noise at the beginning of recording. Change: V1 -> V2: - Revise adc-delay-ms properties description. - Fix examples of bugs found by bots. Seven Lee (3): ASoC: dt-bindings: nau8821: Add delay control for ADC ASoC: nau8821: Add delay control for ADC ASoC: nau8821: Remove redundant ADC controls .../bindings/sound/nuvoton,nau8821.yaml | 7 +++++++ sound/soc/codecs/nau8821.c | 19 +++++++++---------- sound/soc/codecs/nau8821.h | 1 + 3 files changed, 17 insertions(+), 10 deletions(-) -- 2.25.1

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[PATCH] ALSA: scarlett2: Zero initialize ret in scarlett2_ag_target_ctl_get()
by Nathan Chancellor 21 Apr '24

21 Apr '24

Clang warns (or errors with CONFIG_WERROR): sound/usb/mixer_scarlett2.c:3697:6: error: variable 'err' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] 3697 | if (private->autogain_updated) { | ^~~~~~~~~~~~~~~~~~~~~~~~~ sound/usb/mixer_scarlett2.c:3707:9: note: uninitialized use occurs here 3707 | return err; | ^~~ sound/usb/mixer_scarlett2.c:3697:2: note: remove the 'if' if its condition is always true 3697 | if (private->autogain_updated) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sound/usb/mixer_scarlett2.c:3688:9: note: initialize the variable 'err' to silence this warning 3688 | int err; | ^ | = 0 1 error generated. Initialize ret to zero to ensure ret is initialized in all paths within scarlett2_ag_target_ctl_get(), which matches the style of other functions in this driver. Fixes: e30ea5340c25 ("ALSA: scarlett2: Add autogain target controls") Signed-off-by: Nathan Chancellor <nathan(a)kernel.org> --- FWIW, a lot of the functions that end in just 'mutex_unlock()' before returning could probably benefit from the cleanup.h infrastructure, which would help with the scope of err in this particular function, but I decided to go with the most minimal fix here. --- sound/usb/mixer_scarlett2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c index a2de31a0371b..b251d25f2a85 100644 --- a/sound/usb/mixer_scarlett2.c +++ b/sound/usb/mixer_scarlett2.c @@ -3685,7 +3685,7 @@ static int scarlett2_ag_target_ctl_get( struct usb_mixer_elem_info *elem = kctl->private_data; struct usb_mixer_interface *mixer = elem->head.mixer; struct scarlett2_data *private = mixer->private_data; - int err; + int err = 0; mutex_lock(&private->data_mutex); --- base-commit: 32cb23a0f911317cdb5030035e49a204aa86fef5 change-id: 20240419-alsa-scarlett2-fix-wsometimes-uninitialized-d44f7659b52a Best regards, -- Nathan Chancellor <nathan(a)kernel.org>

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[PATCH] ASoC: codecs: wsa881x: set clk_stop_mode1 flag
by srinivas.kandagatla＠linaro.org 20 Apr '24

20 Apr '24

From: Srinivas Kandagatla <srinivas.kandagatla(a)linaro.org> WSA881x codecs do not retain the state while clock is stopped, so mark this with clk_stop_mode1 flag. Fixes: a0aab9e1404a ("ASoC: codecs: add wsa881x amplifier support") Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla(a)linaro.org> --- sound/soc/codecs/wsa881x.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/codecs/wsa881x.c b/sound/soc/codecs/wsa881x.c index 3c025dabaf7a..1253695bebd8 100644 --- a/sound/soc/codecs/wsa881x.c +++ b/sound/soc/codecs/wsa881x.c @@ -1155,6 +1155,7 @@ static int wsa881x_probe(struct sdw_slave *pdev, pdev->prop.sink_ports = GENMASK(WSA881X_MAX_SWR_PORTS, 0); pdev->prop.sink_dpn_prop = wsa_sink_dpn_prop; pdev->prop.scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY; + pdev->prop.clk_stop_mode1 = true; gpiod_direction_output(wsa881x->sd_n, !wsa881x->sd_n_val); wsa881x->regmap = devm_regmap_init_sdw(pdev, &wsa881x_regmap_config); -- 2.43.0

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