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User-Agent: Mutt/1.10.1 (2018-07-13) Cc: Sasha Levin , Guennadi Liakhovetski , alsa-devel@alsa-project.org, Kai Vehmanen , linux-kernel@vger.kernel.org, stable@vger.kernel.org, sound-open-firmware@alsa-project.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" --CgTrtGVSVGoxAIFj Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Jul 02, 2020 at 10:42:21AM -0500, Pierre-Louis Bossart wrote: > On 7/2/20 6:18 AM, Mark Brown wrote: > > On Wed, Jul 01, 2020 at 09:21:24PM -0400, Sasha Levin wrote: > > > From: Pierre-Louis Bossart > > > [ Upstream commit c8d2e2bfaeffa0f914330e8b4e45b986c8d30b58 ] > > > Usually the DSP is not traditionally enabled on H skews but this might > > > be used moving forward. > > "This might be used moving forward"? > There are two conditions for the SOF driver to be used in a distro: > a) the DSP needs to be enabled (as reported by the pci class info) > b) sound/hda/intel-dsp-config.c needs to contain a quirk to select SOF over > the legacy HDaudio, such as presence of DMIC/SoundWire or a known vendor > DMI. > Traditionally for desktops neither a) nor b) are true, but this is changing: > we will start adding quirks for specific product lines as requested by OEMs. > Does this answer to your question? The question was more of a why is this being backported one - without those extra quirks this does nothing, and frankly with them it seems like a *major* change someone might see in stable if they update their kernel and it suddenly switches to an entirely different DSP software stack. --CgTrtGVSVGoxAIFj Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl7+BcgACgkQJNaLcl1U h9D9WQf/eYD0E9xMzfnYMjmvItrYNt7IX6kw7q7O/der/0OiCiMdvfKFLFr6bPBF 61VoeZFlJkpui/EcoPgTsf5qlJLPMoCy1Ht7i/TacZppBWp2I07uEw+rtioDkDRe SAy+8LDiHk+Z6JQAXTXUmvdeUcI+tq9dfvQG8KY1wvAlh0+6dyLu4NOnlsTJHgFN xYM6xR1n/y33C8oU7AnQNMZEN1U1O7QH78iHqUmktoWM/71PbE/e+54ZjshjXteV nniGaCewi0NFozRzQaLS6e4SdPssH3Rh3npqa+cQOkLtTn+2U4zt1/mu9VGqmmLp ojykL5QiFLb6CxUSm33uvn2zV8V6gw== =iB43 -----END PGP SIGNATURE----- --CgTrtGVSVGoxAIFj--