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authorLinus Torvalds <torvalds@linux-foundation.org>2025-09-02 13:38:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2025-09-02 13:38:07 -0700
commite6b9dce0aeeb91dfc0974ab87f02454e24566182 (patch)
tree0a97d0e20c747052b8be08c3c4ead05f4ec7d636 /Documentation
parent8026aed072e1221f0a61e5acc48c64546341bd4d (diff)
parentbcd6659d4911c528381531472a0cefbd4003e29e (diff)
Merge tag 'sound-6.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai: "A collection of small changes including a few regression fixes: - Regression fix for Intel SKL/KBL HD-audio bindings - Regression fix for missing Nvidia HDMI codec entries after the recent code reorganization - A few TAS2781 codec regression fixes - Fix for ASoC component lookup breakage - Usual HD-audio, USB-audio and SOF quirk entries" * tag 'sound-6.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda/hdmi: Add pin fix for another HP EliteDesk 800 G4 model ALSA: usb-audio: Allow Focusrite devices to use low samplerates ALSA: hda: tas2781: reorder tas2563 calibration variables ALSA: hda: tas2781: fix tas2563 EFI data endianness ALSA: firewire-motu: drop EPOLLOUT from poll return values as write is not supported ALSA: docs: Add documents for recently changes in snd-usb-audio ALSA: usb-audio: Add mute TLV for playback volumes on more devices ASoC: SOF: Intel: WCL: Add the sdw_process_wakeen op ALSA: hda: Avoid binding with SOF for SKL/KBL platforms ASoC: rsnd: tidyup direction name on rsnd_dai_connect() ALSA: hda/tas2781: Fix EFI name for calibration beginning with 1 instead of 0 ALSA: usb-audio: move mixer_quirks' min_mute into common quirk ALSA: hda/realtek: Fix headset mic for TongFang X6[AF]R5xxY ALSA: hda/hdmi: Restore missing HDMI codec entries ASoC: codecs: idt821034: fix wrong log in idt821034_chip_direction_output() ASoC: soc-core: tidyup snd_soc_lookup_component_nolocked() ASoC: soc-core: care NULL dirver name on snd_soc_lookup_component_nolocked() ALSA: hda: intel-dsp-config: Select SOF driver on MTL Chromebooks ALSA: usb-audio: Add mute TLV for playback volumes on some devices
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/sound/alsa-configuration.rst29
1 files changed, 25 insertions, 4 deletions
diff --git a/Documentation/sound/alsa-configuration.rst b/Documentation/sound/alsa-configuration.rst
index a45174d165eb..062b86522e4d 100644
--- a/Documentation/sound/alsa-configuration.rst
+++ b/Documentation/sound/alsa-configuration.rst
@@ -2253,8 +2253,15 @@ device_setup
Default: 0x0000
ignore_ctl_error
Ignore any USB-controller regarding mixer interface (default: no)
+ ``ignore_ctl_error=1`` may help when you get an error at accessing
+ the mixer element such as URB error -22. This happens on some
+ buggy USB device or the controller. This workaround corresponds to
+ the ``quirk_flags`` bit 14, too.
autoclock
Enable auto-clock selection for UAC2 devices (default: yes)
+lowlatency
+ Enable low latency playback mode (default: yes).
+ Could disable it to switch back to the old mode if face a regression.
quirk_alias
Quirk alias list, pass strings like ``0123abcd:5678beef``, which
applies the existing quirk for the device 5678:beef to a new
@@ -2284,6 +2291,11 @@ delayed_register
The driver prints a message like "Found post-registration device
assignment: 1234abcd:04" for such a device, so that user can
notice the need.
+skip_validation
+ Skip unit descriptor validation (default: no).
+ The option is used to ignores the validation errors with the hexdump
+ of the unit descriptor instead of a driver probe error, so that we
+ can check its details.
quirk_flags
Contains the bit flags for various device specific workarounds.
Applied to the corresponding card index.
@@ -2307,6 +2319,16 @@ quirk_flags
* bit 16: Set up the interface at first like UAC1
* bit 17: Apply the generic implicit feedback sync mode
* bit 18: Don't apply implicit feedback sync mode
+ * bit 19: Don't closed interface during setting sample rate
+ * bit 20: Force an interface reset whenever stopping & restarting
+ a stream
+ * bit 21: Do not set PCM rate (frequency) when only one rate is
+ available for the given endpoint.
+ * bit 22: Set the fixed resolution 16 for Mic Capture Volume
+ * bit 23: Set the fixed resolution 384 for Mic Capture Volume
+ * bit 24: Set minimum volume control value as mute for devices
+ where the lowest playback value represents muted state instead
+ of minimum audible volume
This module supports multiple devices, autoprobe and hotplugging.
@@ -2314,10 +2336,9 @@ NB: ``nrpacks`` parameter can be modified dynamically via sysfs.
Don't put the value over 20. Changing via sysfs has no sanity
check.
-NB: ``ignore_ctl_error=1`` may help when you get an error at accessing
-the mixer element such as URB error -22. This happens on some
-buggy USB device or the controller. This workaround corresponds to
-the ``quirk_flags`` bit 14, too.
+NB: ``ignore_ctl_error=1`` just provides a quick way to work around the
+issues. If you have a buggy device that requires these quirks, please
+report it to the upstream.
NB: ``quirk_alias`` option is provided only for testing / development.
If you want to have a proper support, contact to upstream for