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| author | Takashi Iwai <tiwai@suse.de> | 2021-08-23 10:37:22 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-08-23 11:59:23 +0300 |
| commit | 4a1672d183cc0bbf26292390ced0bbcb7e810ee1 (patch) | |
| tree | ae0a450def15c46735f80c7adf5ace819eaabc42 /Documentation | |
| parent | a235d5b8e550fac7520410440bcc8003fb4cf8d0 (diff) | |
| download | linux-4a1672d183cc0bbf26292390ced0bbcb7e810ee1.tar.xz | |
ALSA: hda: Update documentation for aliasing via the model option
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/sound/alsa-configuration.rst | 6 | ||||
| -rw-r--r-- | Documentation/sound/hd-audio/notes.rst | 11 |
2 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/sound/alsa-configuration.rst b/Documentation/sound/alsa-configuration.rst index f148b58502c0..e61edd1295fc 100644 --- a/Documentation/sound/alsa-configuration.rst +++ b/Documentation/sound/alsa-configuration.rst @@ -1059,6 +1059,12 @@ The model name ``generic`` is treated as a special case. When this model is given, the driver uses the generic codec parser without "codec-patch". It's sometimes good for testing and debugging. +The model option can be used also for aliasing to another PCI or codec +SSID. When it's passed in the form of ``model=XXXX:YYYY`` where XXXX +and YYYY are the sub-vendor and sub-device IDs in hex numbers, +respectively, the driver will refer to that SSID as a reference to the +quirk table. + If the default configuration doesn't work and one of the above matches with your device, report it together with alsa-info.sh output (with ``--no-upload`` option) to kernel bugzilla or alsa-devel diff --git a/Documentation/sound/hd-audio/notes.rst b/Documentation/sound/hd-audio/notes.rst index cf4d7158af78..d118b6fe269b 100644 --- a/Documentation/sound/hd-audio/notes.rst +++ b/Documentation/sound/hd-audio/notes.rst @@ -215,6 +215,17 @@ There are a few special model option values: * when ``generic`` is passed, the codec-specific parser is skipped and only the generic parser is used. +A new style for the model option that was introduced since 5.15 kernel +is to pass the PCI or codec SSID in the form of ``model=XXXX:YYYY`` +where XXXX and YYYY are the sub-vendor and sub-device IDs in hex +numbers, respectively. This is a kind of aliasing to another device; +when this form is given, the driver will refer to that SSID as a +reference to the quirk table. It'd be useful especially when the +target quirk isn't listed in the model table. For example, passing +model=103c:8862 will apply the quirk for HP ProBook 445 G8 (which +isn't found in the model table as of writing) as long as the device is +handled equivalently by the same driver. + Speaker and Headphone Output ---------------------------- |