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Автор SHA1 Сообщение Дата
Pierre-Louis Bossart b568230529
ALSA: hda: intel-dsp-config: add helper for ACPI DSP driver selection
Mirror capabilities provided for PCI devices, so that distributions
can select which ACPI driver is loaded at run-time with kernel
parameters and DMI tables instead of forcing a build-time selection.

The "legacy" option supported for HDaudio has no meaning here and will
be ignored.

The 'SST' driver based on closed-source firmware has the priority to
avoid any impact on users, and the choice to use SOF is strictly
opt-in. This may change at some point when the 'SST' driver is
deprecated on Baytrail/Cherrytrail.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20201112223825.39765-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-11-19 18:24:35 +00:00
Jaroslav Kysela 82d9d54a6c ALSA: hda: add Intel DSP configuration / probe code
For distributions, we need one place where we can decide
which driver will be activated for the auto-configation of the
Intel's HDA hardware with DSP. Actually, we cover three drivers:

* Legacy HDA
* Intel SST
* Intel Sound Open Firmware (SOF)

All those drivers registers similar PCI IDs, so the first
driver probed from the PCI stack can win. But... it is not
guaranteed that the correct driver wins.

This commit changes Intel's NHLT ACPI module to a common
DSP probe module for the Intel's hardware. All above sound
drivers calls this code. The user can force another behaviour
using the module parameter 'dsp_driver' located in
the 'snd-intel-dspcfg' module.

This change allows to add specific dmi checks for the specific
systems. The examples are taken from the pull request:

  https://github.com/thesofproject/linux/pull/927

Tested on Lenovo Carbon X1 7th gen.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191022174313.29087-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-23 06:31:37 +02:00