October 2023 - Alsa-devel - mailman.alsa-project.org

aplay: improve xrun logs
by GitHub pull_request - opened 27 Oct '23

27 Oct '23

alsa-project/alsa-utils pull request #242 was opened from plbossart: Add a pcm_status on xrun and a non-zero timestamp. Request URL : https://github.com/alsa-project/alsa-utils/pull/242 Patch URL : https://github.com/alsa-project/alsa-utils/pull/242.patch Repository URL: https://github.com/alsa-project/alsa-utils

1 0

aplaymidi uses the wrong tempo
by GitHub issues - edited 27 Oct '23

27 Oct '23

alsa-project/alsa-utils issue #241 was edited from PQCraft: It seems to be locked to a tempo of 120 for some reason. Version: 1.2.10 Issue URL : https://github.com/alsa-project/alsa-utils/issues/241 Repository URL: https://github.com/alsa-project/alsa-utils

1 0

aplaymidi uses the wrong tempo
by GitHub issues - opened 27 Oct '23

27 Oct '23

alsa-project/alsa-utils issue #241 was opened from PQCraft: It seems to be locked to a tempo of 120 for some reason. Issue URL : https://github.com/alsa-project/alsa-utils/issues/241 Repository URL: https://github.com/alsa-project/alsa-utils

1 0

[PATCH 0/4] Add tCLQV parameter to tweak SPI timings
by Eberhard Stoll 27 Oct '23

27 Oct '23

From: Eberhard Stoll <eberhard.stoll(a)kontron.de> Hi All, this patch series adds parameters to tweak SPI timings for some (Q)SPI devices. For example it optimizes the support for the operation of a Winbond W25N02KV SPI NAND chip on NXP i.mx6 ul(l) devices. The Winbond W25N02KV SPI NAND has the characteristic to introduce a delay between spi clock and the masters spi receive data (called tCLQV value in data sheet). This chip can operate with a maximum SPI clock of 104MHz. Disregarding the requred tCLQV value of 7ns for this chip reduces the possible spi clock to approx. 70MHz. To support the full bandwith of this chip, the tCLQV parameter has to be supported in SPI framework and SPI controller and the SPI NAND chip needs this parameter in the device configuration data. Also other devices can improve their operating SPI clock performance with this setting if they also has significant tCLQV values and the SPI controller will support it. This patch series adds support the tCLQV parameter in: - SPI framework - SPI NAND framework - NXP i.mx6 QSPI controller - Winbond W25N02KV SPI NAND device Eberhard Stoll (4): spi: Add parameter for clock to rx delay mtd: spinand: Add support for clock to rx delay setting mtd: spinand: winbond: Add rx sample delay for W25N02KV spi: spi-fsl-qspi: Add support for rx data sample point adjustment drivers/mtd/nand/spi/core.c | 2 + drivers/mtd/nand/spi/winbond.c | 3 +- drivers/spi/spi-fsl-qspi.c | 80 ++++++++++++++++++++++++++++++++++ include/linux/mtd/spinand.h | 5 +++ include/linux/spi/spi.h | 3 ++ 5 files changed, 92 insertions(+), 1 deletion(-) base-commit: 05d3ef8bba77c1b5f98d941d8b2d4aeab8118ef1 -- 2.25.1

4 4

[PATCH 0/4] ASoC: qcom: fixes for Click/Pop Noise
by Srinivas Kandagatla 27 Oct '23

27 Oct '23

Click/Pop Noise was a long pending issue with WSA Codecs which are prone to accumlate DC when ports are active but without any data streams. There are multiple places in the current setup, where this could happen in both startup as well as shutdown path. This patches help fix those issues by making sure the PA is Muted/Unmuted inline with the stream start/stop events. Other than this there is a patch to fix DSP graph saturation issue as we never unload playback graph before loading same graph. Srinivas Kandagatla (4): ASoC: qcom: q6apm-lpass-dai: close graphs before opening a new one ASoC: qcom: sdw: do not restart soundwire ports for every prepare ASoC: codecs: wsa883x: mute/unmute PA in correct sequence ASoC: codecs: wsa881x: mute/unmute PA in correct sequence sound/soc/codecs/wsa881x.c | 30 ++++++++++++++++++++- sound/soc/codecs/wsa883x.c | 36 ++++++++++++++++++++----- sound/soc/qcom/qdsp6/q6apm-lpass-dais.c | 3 +++ sound/soc/qcom/sdw.c | 7 ++--- 4 files changed, 63 insertions(+), 13 deletions(-) -- 2.21.0

4 16

[alsa-devel] echo-cancellation plugin advice?
by Max Klein 27 Oct '23

27 Oct '23

> Well, asym wouldn't be the answer. Basically you'll need to open two > slave PCMs in one plugin. So, it's no simple filter-type plugin. > It's doable, but not easy as it sounds, I guess. Takashi, can you please further explain why asym is not the solution and what you see as a problem? I am also trying to figure out if it would be possible to create such a plugin for ALSA? I am still searching for some good starting points on how to write an ALSA plugin... Jean-Marc Valin (http://lists.linuxaudio.org/pipermail/linux-audio-dev/2005-June/012454.html) already released his work as part of speex but as far I know there is no plugin that has been made out of it? Thanks for any hint! -- NEU: FreePhone 3-fach-Flat mit kostenlosem Smartphone! Jetzt informieren: http://mobile.1und1.de/?ac=OM.PW.PW003K20328T7073a

3 2

[PATCH] ALSA: scarlett2: Add missing check with firmware version control
by Geoffrey D. Bennett 27 Oct '23

27 Oct '23

scarlett2_add_firmware_version_ctl() may return an error, but the return value was not being checked. Add the missing check. Signed-off-by: Geoffrey D. Bennett <g(a)b4.vu> --- sound/usb/mixer_scarlett2.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c index f6d1fdfa88e1..9803f3e426c6 100644 --- a/sound/usb/mixer_scarlett2.c +++ b/sound/usb/mixer_scarlett2.c @@ -4424,6 +4424,8 @@ static int snd_scarlett2_controls_create( /* Add firmware version control */ err = scarlett2_add_firmware_version_ctl(mixer); + if (err < 0) + return err; /* Read volume levels and controls from the interface */ err = scarlett2_read_configs(mixer); -- 2.41.0

2 1

[PATCH 0/5] ALSA: scarlett2: cleanup + level meter fix
by Geoffrey D. Bennett 27 Oct '23

27 Oct '23

Hi Takashi, 5 patches here for the scarlett2 driver... Patches 1-4 are renames/cleanup/refactoring in preparation for adding firmware update, Scarlett Gen 4, and Vocaster support. Patch 5 fixes the Level Meter control which was barely useful before, but now works as expected. Thanks, Geoffrey. Geoffrey D. Bennett (5): ALSA: scarlett2: Rename scarlett_gen2 to scarlett2 ALSA: scarlett2: Rename Gen 3 config sets ALSA: scarlett2: Add support for reading firmware version ALSA: scarlett2: Allow passing any output to line_out_remap() ALSA: scarlett2: Remap Level Meter values MAINTAINERS | 2 +- sound/usb/Makefile | 2 +- sound/usb/mixer_quirks.c | 4 +- ...ixer_scarlett_gen2.c => mixer_scarlett2.c} | 361 +++++++++++++++--- sound/usb/mixer_scarlett2.h | 7 + sound/usb/mixer_scarlett_gen2.h | 7 - 6 files changed, 309 insertions(+), 74 deletions(-) rename sound/usb/{mixer_scarlett_gen2.c => mixer_scarlett2.c} (94%) create mode 100644 sound/usb/mixer_scarlett2.h delete mode 100644 sound/usb/mixer_scarlett_gen2.h -- 2.41.0

2 6

ucm2: soundwire: add rt713 SDCA device
by GitHub pull_request - opened 27 Oct '23

27 Oct '23

alsa-project/alsa-ucm-conf pull request #363 was opened from shumingfan: ucm2: soundwire: add rt713 SDCA device Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/363 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/363.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf

1 0

[RFC PATCH v7 00/13] Add audio support in v4l2 framework
by Shengjiu Wang 27 Oct '23

27 Oct '23

Audio signal processing also has the requirement for memory to memory similar as Video. This asrc memory to memory (memory ->asrc->memory) case is a non real time use case. User fills the input buffer to the asrc module, after conversion, then asrc sends back the output buffer to user. So it is not a traditional ALSA playback and capture case. It is a specific use case, there is no reference in current kernel. v4l2 memory to memory is the closed implementation, v4l2 current support video, image, radio, tuner, touch devices, so it is not complicated to add support for this specific audio case. Because we had implemented the "memory -> asrc ->i2s device-> codec" use case in ALSA. Now the "memory->asrc->memory" needs to reuse the code in asrc driver, so the first 3 patches is for refining the code to make it can be shared by the "memory->asrc->memory" driver. The main change is in the v4l2 side, A /dev/vl4-audioX will be created, user applications only use the ioctl of v4l2 framework. Other change is to add memory to memory support for two kinds of i.MX ASRC module. changes in v7: - add acked-by from Mark - separate commit for fixed point, m2m audio class, audio rate controls - use INTEGER_MENU for rate, FIXED_POINT for rate offset - remove used fmts - address other comments for Hans changes in v6: - use m2m_prepare/m2m_unprepare/m2m_start/m2m_stop to replace m2m_start_part_one/m2m_stop_part_one, m2m_start_part_two/m2m_stop_part_two. - change V4L2_CTRL_TYPE_ASRC_RATE to V4L2_CTRL_TYPE_FIXED_POINT - fix warning by kernel test rebot - remove some unused format V4L2_AUDIO_FMT_XX - Get SNDRV_PCM_FORMAT from V4L2_AUDIO_FMT in driver. - rename audm2m to viaudm2m. changes in v5: - remove V4L2_AUDIO_FMT_LPCM - define audio pixel format like V4L2_AUDIO_FMT_S8... - remove rate and format in struct v4l2_audio_format. - Add V4L2_CID_ASRC_SOURCE_RATE and V4L2_CID_ASRC_DEST_RATE controls - updata document accordingly. changes in v4: - update document style - separate V4L2_AUDIO_FMT_LPCM and V4L2_CAP_AUDIO_M2M in separate commit changes in v3: - Modify documents for adding audio m2m support - Add audio virtual m2m driver - Defined V4L2_AUDIO_FMT_LPCM format type for audio. - Defined V4L2_CAP_AUDIO_M2M capability type for audio m2m case. - with modification in v4l-utils, pass v4l2-compliance test. changes in v2: - decouple the implementation in v4l2 and ALSA - implement the memory to memory driver as a platfrom driver and move it to driver/media - move fsl_asrc_common.h to include/sound folder Shengjiu Wang (13): ASoC: fsl_asrc: define functions for memory to memory usage ASoC: fsl_easrc: define functions for memory to memory usage ASoC: fsl_asrc: move fsl_asrc_common.h to include/sound ASoC: fsl_asrc: register m2m platform device ASoC: fsl_easrc: register m2m platform device media: uapi: Add V4L2_CAP_AUDIO_M2M capability flag media: v4l2: Add audio capture and output support media: uapi: define audio sample format fourcc type media: uapi: Add V4L2_CTRL_CLASS_M2M_AUDIO media: uapi: Add V4L2_CTRL_TYPE_FIXED_POINT media: uapi: Add audio rate controls support media: imx-asrc: Add memory to memory driver media: vim2m_audio: add virtual driver for audio memory to memory .../userspace-api/media/v4l/buffer.rst | 6 + .../userspace-api/media/v4l/common.rst | 1 + .../media/v4l/dev-audio-mem2mem.rst | 71 + .../userspace-api/media/v4l/devices.rst | 1 + .../media/v4l/ext-ctrls-audio-m2m.rst | 39 + .../userspace-api/media/v4l/pixfmt-audio.rst | 87 ++ .../userspace-api/media/v4l/pixfmt.rst | 1 + .../media/v4l/vidioc-enum-fmt.rst | 2 + .../media/v4l/vidioc-g-ext-ctrls.rst | 4 + .../userspace-api/media/v4l/vidioc-g-fmt.rst | 4 + .../media/v4l/vidioc-querycap.rst | 3 + .../media/v4l/vidioc-queryctrl.rst | 6 + .../media/videodev2.h.rst.exceptions | 4 + .../media/common/videobuf2/videobuf2-v4l2.c | 4 + drivers/media/platform/nxp/Kconfig | 12 + drivers/media/platform/nxp/Makefile | 1 + drivers/media/platform/nxp/imx-asrc.c | 1207 +++++++++++++++++ drivers/media/test-drivers/Kconfig | 9 + drivers/media/test-drivers/Makefile | 1 + drivers/media/test-drivers/vim2m_audio.c | 680 ++++++++++ drivers/media/v4l2-core/v4l2-ctrls-api.c | 5 +- drivers/media/v4l2-core/v4l2-ctrls-core.c | 2 + drivers/media/v4l2-core/v4l2-ctrls-defs.c | 16 + drivers/media/v4l2-core/v4l2-dev.c | 17 + drivers/media/v4l2-core/v4l2-ioctl.c | 66 + include/media/v4l2-dev.h | 2 + include/media/v4l2-ioctl.h | 34 + .../fsl => include/sound}/fsl_asrc_common.h | 60 + include/uapi/linux/v4l2-controls.h | 9 + include/uapi/linux/videodev2.h | 42 + sound/soc/fsl/fsl_asrc.c | 144 ++ sound/soc/fsl/fsl_asrc.h | 4 +- sound/soc/fsl/fsl_asrc_dma.c | 2 +- sound/soc/fsl/fsl_easrc.c | 233 ++++ sound/soc/fsl/fsl_easrc.h | 6 +- 35 files changed, 2781 insertions(+), 4 deletions(-) create mode 100644 Documentation/userspace-api/media/v4l/dev-audio-mem2mem.rst create mode 100644 Documentation/userspace-api/media/v4l/ext-ctrls-audio-m2m.rst create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-audio.rst create mode 100644 drivers/media/platform/nxp/imx-asrc.c create mode 100644 drivers/media/test-drivers/vim2m_audio.c rename {sound/soc/fsl => include/sound}/fsl_asrc_common.h (60%) -- 2.34.1

3 19