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path: root/Documentation/sound/alsa-configuration.rst
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2022-06-29Merge tag 'v5.15.50' into lf-5.15.yJason Liu
This is the 5.15.50 stable release * tag 'v5.15.50': (1395 commits) Linux 5.15.50 arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA transfer serial: core: Initialize rs485 RTS polarity already on probe ... Signed-off-by: Jason Liu <jason.hui.liu@nxp.com> Conflicts: drivers/bus/fsl-mc/fsl-mc-bus.c drivers/crypto/caam/ctrl.c drivers/pci/controller/dwc/pci-imx6.c drivers/spi/spi-fsl-qspi.c drivers/tty/serial/fsl_lpuart.c include/uapi/linux/dma-buf.h
2022-06-09ALSA: usb-audio: Add quirk bits for enabling/disabling generic implicit fbTakashi Iwai
[ Upstream commit 0f1f7a6661394fe4a53db254c346d6aa2dd64397 ] For making easier to test, add the new quirk_flags bits 17 and 18 to enable and disable the generic implicit feedback mode. The bit 17 is equivalent with implicit_fb=1 option, applying the generic implicit feedback sync mode. OTOH, the bit 18 disables the implicit fb mode forcibly. Link: https://lore.kernel.org/r/20220421064101.12456-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-01-26ASoC: dmaengine: Introduce module option prealloc_buffer_size_kbytesSugar Zhang
Currently, The fixed 512KB prealloc buffer size is too larger for tiny memory kernel (such as 16MB memory). This patch adds the module option "prealloc_buffer_size_kbytes" to specify prealloc buffer size. It's suitable for cards which use the generic dmaengine pcm driver with no config. Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com> Link: https://lore.kernel.org/r/1632394246-59341-1-git-send-email-sugar.zhang@rock-chips.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-24ALSA: usb-audio: Move set-interface-first workaround into common quirkTakashi Iwai
The recent quirk for WALKMAN (commit 7af5a14371c1: "ALSA: usb-audio: Fix regression on Sony WALKMAN NW-A45 DAC") may be required for other devices and is worth to be put into the common quirk flags. This patch adds a new quirk flag bit QUIRK_FLAG_SET_IFACE_FIRST and a quirk table entry for the device. Link: https://lore.kernel.org/r/20210824055720.9240-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-08-23ALSA: doc: Fix indentation warningTakashi Iwai
Fix a trivial warning for the indentation by putting an empty line: Documentation/sound/alsa-configuration.rst:2258: WARNING: Unexpected indentation. Fixes: a39978ed6df1 ("ALSA: doc: Add the description of quirk_flags option for snd-usb-audio") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Link: https://lore.kernel.org/r/20210823113518.30134-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-08-23ALSA: hda: Update documentation for aliasing via the model optionTakashi Iwai
The previous patch allowed user to specify the aliasing of SSID via model option for applying a quirk. Update the documentation accordingly. Link: https://lore.kernel.org/r/20210823073722.14873-4-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-08-02ALSA: doc: Add the description of quirk_flags option for snd-usb-audioTakashi Iwai
Just briefly described about the new option. Link: https://lore.kernel.org/r/20210729074404.19728-6-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-01-12ALSA: doc: Fix reference to mixart.rstJonathan Neuschäfer
MIXART.txt has been converted to ReST and renamed. Fix the reference in alsa-configuration.rst. Fixes: 3d8e81862ce4 ("ALSA: doc: ReSTize MIXART.txt") Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20210101221942.1068388-1-j.neuschaefer@gmx.net Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-11-23ALSA: usb-audio: Add implicit_fb module optionTakashi Iwai
A new module option, implicit_fb, is added to specify the driver looking for the implicit feedback sync. This can be useful for a device that could be working better in the implicit feed back mode and user wants to test it quickly. When this works, we can add the quirk entry easily. Tested-by: Keith Milner <kamilner@superlative.org> Tested-by: Dylan Robinson <dylan_robinson@motu.com> Link: https://lore.kernel.org/r/20201123085347.19667-40-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-07-19ALSA: Replace HTTP links with HTTPS onesAlexander A. Klimov
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200719151705.59624-1-grandmaster@al2klimov.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-03-26ALSA: usb-audio: Update the documentation for the new delayed_register optionTakashi Iwai
Just adding a brief explanation to alsa-configuration.rst. Link: https://lore.kernel.org/r/20200325103322.2508-5-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-17ALSA: cmipci: Allow disabling MPU port via module optionTakashi Iwai
Patrick May reported that his sound card with CMI8378 chip causes a crash / reboot when accessing the MIDI port that isn't actually present on the board. Moreover, despite of the documentation, passing mpu_port=0 doesn't disable the MIDI port on this board. It implies that the chip is a newer revision and the MPU401 port is integrated and mapped on the PCI register. For this chip model, the driver enables the MPU port unconditionally, so far. Although fixing the unexpected reboot would be the best solution, it's not so trivial to identify the cause. So, as a plan B, this patch extends the existing mpu_port option usage to allow disabling the port by specifying the value 0, just like we applied for fm_port option in commit 2f24d159d5ac ("[ALSA] cmipci - Allow to disable integrated FM port"). As default, the MPU port is still enabled, but user can pass mpu_port=0 to disable it. Reported-and-tested-by: Patrick May <dusthillresident@gmail.com> Link: https://lore.kernel.org/r/20191217081448.1144-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-08-28ALSA: hda - Update descriptions about new position_fix valuesTakashi Iwai
The new values for the recent Intel and AMD chips are missing in the documentation. Add the new descriptions. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-06-26ALSA: Fix references to Documentation/.*/MultiSoundMauro Carvalho Chehab
Now that the documentation/script file got restored, fix the references within the Kernel tree. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-06-06Merge tag 'sound-4.18-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "We've got many code additions at this cycle as a result of quite a few new drivers. Below are highlights: Core stuff: - Fix the long-standing issue with the device registration order; the control device is now registered at last - PCM locking code cleanups for RT kernels - Fixes for possible races in ALSA timer resolution accesses - TLV offset definitions in uapi ASoC: - Many fixes for the topology stuff, including fixes for v4 ABI compatibility - Lots of cleanups / quirks for Intel platforms based on Realtek CODECs - Continued componentization works, removing legacy CODEC stuff - Conversion of OMAP DMA to the new, more standard SDMA-PCM driver - Fixes and updates to Cirrus Logic SoC drivers - New Qualcomm DSP support - New drivers for Analog SSM2305, Atmel I2S controllers, Mediatek MT6351, MT6797 and MT7622, Qualcomm DSPs, Realtek RT1305, RT1306 and RT5668 and TI TSCS454 HD-audio: - Finally better support for some CA0132 boards, allowing Windows firmware - HP Spectre x360 support along with a bulk of COEF stuff - Blacklisting power save default some known boards reported on Fedora USB-audio: - Continued improvements on UAC3 support; now BADD is supported - Fixes / improvements for Dell WD15 dock - Allow DMA coherent pages for PCM buffers for ARCH, MIPS & co Others: - New Xen sound frontend driver support - Cache implementation and other improvements for FireWire DICE - Conversions to octal permissions in allover places" * tag 'sound-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (386 commits) ASoC: dapm: delete dapm_kcontrol_data paths list before freeing it ALSA: usb-audio: remove redundant check on err ASoC: topology: Move skl-tplg-interface.h to uapi ASoC: topology: Move v4 manifest header data structures to uapi ASoC: topology: Improve backwards compatibility with v4 topology files ALSA: pci/hda: Remove unused, broken, header file ASoC: TSCS454: Add Support ASoC: Intel: kbl: Move codec sysclk config to codec_init function ASoC: simple-card: set cpu dai clk in hw_params ALSA: hda - Handle kzalloc() failure in snd_hda_attach_pcm_stream() ALSA: oxygen: use match_string() helper ASoC: dapm: use match_string() helper ASoC: max98095: use match_string() helper ASoC: max98088: use match_string() helper ASoC: Intel: bytcr_rt5651: Set card long_name based on quirks ASoC: mt6797-mt6351: add hostless phone call path ASoC: mt6797: add Hostless DAI ASoC: mt6797: add PCM interface ASoC: mediatek: export mtk-afe symbols as needed ASoC: codecs: PCM1789: include gpio/consumer.h ...
2018-05-29ALSA: usb-audio: Allow non-vmalloc buffer for PCM buffersTakashi Iwai
Currently, USB-audio driver allocates the PCM buffer via vmalloc(), as this serves merely as an intermediate buffer that is copied to each URB transfer buffer. This works well in general on x86, but on some archs this may result in cache coherency issues when mmap is used. OTOH, it works also on such arch unless mmap is used. This patch is a step for mitigating the inconvenience; a new module option "use_vmalloc" is provided so that user can choose to allocate the DMA coherent buffer instead of the existing vmalloc buffer. The drawback is that it'd be the standard dma_alloc_coherent() calls and the system would require contiguous pages on non-x86 archs. Note that it's a global option and not dynamically switchable since the buffer is pre-allocated at the probe time. In theory, it's possible to be switchable, but it'd be trickier and racier. As default use_vmalloc option is set to true, so that the old behavior is kept. For allowing the coherent mmap on ARM or MIPS, pass use_vmalloc=0 option explicitly. Reported-and-tested-by: Daniel Danzberger <daniel@dd-wrt.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2018-04-16Some files where renamed from .txt to .rst, but the DocumentationChristina Quast
was not fixed yet. Signed-off-by: Christina Quast <cquast@baylibre.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-11-10ALSA: doc: ReSTize ALSA-Configuration documentTakashi Iwai
A simple conversion from the text file. Since this is the only document specific to the configurations, it's put to the root sound subdirectory. A section describing the obsoleted configure stuff of old alsa-driver tarball got removed. Signed-off-by: Takashi Iwai <tiwai@suse.de>