linux-dev/Documentation/sound/hd-audio, branch master

ALSA: hda/realtek: Add alc256-samsung-headphone fixup

2022-03-22T20:51:02Z

This fixes the near-silence of the headphone jack on the ALC256-based Samsung Galaxy Book Flex Alpha (NP730QCJ). The magic verbs were found through trial and error, using known ALC298 hacks as inspiration. The fixup is auto-enabled only when the NP730QCJ is detected. It can be manually enabled using model=alc256-samsung-headphone. Signed-off-by: Matt Kramer Link: https://lore.kernel.org/r/3168355.aeNJFYEL58@linus Signed-off-by: Takashi Iwai

ALSA: hda/realtek: Add new alc285-hp-amp-init model

2021-12-14T09:44:26Z

Adds a new "alc285-hp-amp-init" model that can be used to apply the ALC285 HP speaker amplifier initialization fixup to devices that are not already known by passing "hda_model=alc285-hp-amp-init" to the snd-sof-intel-hda-common module or "model=alc285-hp-amp-init" to the snd-hda-intel module, depending on which is being used. Signed-off-by: Bradley Scott Cc: Link: https://lore.kernel.org/r/20211213162246.506838-1-bscott@teksavvy.com Signed-off-by: Takashi Iwai

ALSA: hda: Update documentation for aliasing via the model option

2021-08-23T08:59:23Z

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

ALSA: doc: Fix spelling mistakes

2021-06-10T08:11:04Z

correct Reatek to Realtek Signed-off-by: huangjianghui Link: https://lore.kernel.org/r/20210610062036.30300-1-huangjianghui@uniontech.com Signed-off-by: Takashi Iwai

ALSA: Replace HTTP links with HTTPS ones

2020-07-19T18:49:25Z

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 Link: https://lore.kernel.org/r/20200719151705.59624-1-grandmaster@al2klimov.de Signed-off-by: Takashi Iwai

ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups

2020-03-31T08:54:06Z

patch_realtek.c has historically failed to properly configure the PC Beep Hidden Register for the ALC256 codec (among others). Depending on your kernel version, symptoms of this misconfiguration can range from chassis noise, picked up by a poorly-shielded PCBEEP trace, getting amplified and played on your internal speaker and/or headphones to loud feedback, which responds to the "Headphone Mic Boost" ALSA control, getting played through your headphones. For details of the problem, see the patch in this series titled "ALSA: hda/realtek - Set principled PC Beep configuration for ALC256", which fixes the configuration. These symptoms have been most noticed on the Dell XPS 13 9350 and 9360, popular laptops that use the ALC256. As a result, several model-specific fixups have been introduced to try and fix the problem, the most egregious of which locks the "Headphone Mic Boost" control as a hack to minimize noise from a feedback loop that shouldn't have been there in the first place. Now that the underlying issue has been fixed, remove all these fixups. Remaining fixups needed by the XPS 13 are all picked up by existing pin quirks. This change should, for the XPS 13 9350/9360 - Significantly increase volume and audio quality on headphones - Eliminate headphone popping on suspend/resume - Allow "Headphone Mic Boost" to be set again, making the headphone jack fully usable as a microphone jack too. Fixes: 8c69729b4439 ("ALSA: hda - Fix headphone noise after Dell XPS 13 resume back from S3") Fixes: 423cd785619a ("ALSA: hda - Fix headphone noise on Dell XPS 13 9360") Fixes: e4c9fd10eb21 ("ALSA: hda - Apply headphone noise quirk for another Dell XPS 13 variant") Fixes: 1099f48457d0 ("ALSA: hda/realtek: Reduce the Headphone static noise on XPS 9350/9360") Cc: stable@vger.kernel.org Signed-off-by: Thomas Hebb Link: https://lore.kernel.org/r/b649a00edfde150cf6eebbb4390e15e0c2deb39a.1585584498.git.tommyhebb@gmail.com Signed-off-by: Takashi Iwai

ALSA: doc: Document PC Beep Hidden Register on Realtek ALC256

2020-03-31T08:51:45Z

This codec (among others) has a hidden set of audio routes, apparently designed to allow PC Beep output without a mixer widget on the output path, which are controlled by an undocumented Realtek vendor register. The default configuration of these routes means that certain inputs aren't accessible, necessitating driver control of the register. However, Realtek has provided no documentation of the register, instead opting to fix issues by providing magic numbers, most of which have been at least somewhat erroneous. These magic numbers then get copied by others into model-specific fixups, leading to a fragmented and buggy set of configurations. To get out of this situation, I've reverse engineered the register by flipping bits and observing how the codec's behavior changes. This commit documents my findings. It does not change any code. Cc: stable@vger.kernel.org Signed-off-by: Thomas Hebb Link: https://lore.kernel.org/r/bd69dfdeaf40ff31c4b7b797c829bb320031739c.1585584498.git.tommyhebb@gmail.com Signed-off-by: Takashi Iwai

ALSA: hda - Update descriptions about new position_fix values

2019-08-28T14:34:36Z

The new values for the recent Intel and AMD chips are missing in the documentation. Add the new descriptions. Signed-off-by: Takashi Iwai

ALSA: hda - Add a quirk model for fixing Huawei Matebook X right speaker

2019-08-09T14:57:31Z

[ This is rather a revival of the patch Tomas sent in months ago, but applying only with the quirk model option -- tiwai ] Hard coded coefficients to make Huawuei Matebook X right speaker work. The Matebook X has a ALC298, please refer to bug 197801 on how these numbers were reverse engineered from the Windows driver The reversed engineered sequence represents a repeating pattern of verbs, and the only values that are changing periodically are written on indexes 0x23 and 0x25: 0x500, 0x23 0x400, VALUE1 0x500, 0x25 0x400, VALUE2 * skipped reading sequences (0x500 - 0xc00 sequences are ignored) * static values from reverse engineering are used NOTE: since a significant risk is still considered, this is provided as an experimental fix that isn't applied as default for now. For enabling the fix, you'll have to choose huawei-mbx-stereo via model option of snd-hda-intel module. If we get feedback from users that this works stably, we may apply it per default. [ Some coding style fixes and replacement with AC_VERB_* by tiwai ] BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=197801 Signed-off-by: Tomas Espeleta Signed-off-by: Takashi Iwai

ALSA: hda/realtek - Add model description for Chrome headset button quirk

2019-02-20T11:56:30Z

Forgot to update the document. Fixes: e854747d7593 ("ALSA: hda/realtek - Enable headset button support for new codec") Signed-off-by: Takashi Iwai