From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: commit b1ef29725865 (ACPI _REV=2) causes sound regression on Dell XPS 13 [Was: Discussion around quirking the _REV behavior for the XPS 13 (2015) until 4.2] Date: Tue, 12 May 2015 18:32:50 +0100 Message-ID: <20150512173250.GG3066@sirena.org.uk> References: <55401602.5050907@dell.com> <55480021.1090402@dell.com> <20150511182658.GA8516@isilmar-3.linta.de> <20150512101258.GL2761@sirena.org.uk> <55521BA0.3030606@dell.com> <20150512161849.GD3066@sirena.org.uk> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="jt0yj30bxbg11sci" Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org To: Matthew Garrett Cc: Mario Limonciello , Dominik Brodowski , "robert.moore@intel.com" , "lv.zheng@intel.com" , "rafael.j.wysocki@intel.com" , "linux-acpi@vger.kernel.org" , "han.lu@intel.com" , "yang.jie@intel.com" , "alsa-devel@alsa-project.org" , Matthew Garrett , "liam.r.girdwood@intel.com" List-Id: alsa-devel@alsa-project.org --jt0yj30bxbg11sci Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, May 12, 2015 at 10:21:41AM -0700, Matthew Garrett wrote: > Since there's no way to get this working without using new userspace, > we're basically stuck with having to support _REV 5. And since we're > supposed to support old userspace basically forever, this isn't going > to be something that we can just remove in a few months. But since the > hardware is intended to be used in I2S mode, we don't want this quirk > to be there forever. So we're basically left with adding > CONFIG_ACPI_WORKAROUND_BROKEN_DELLS which enables the quirk, default > it to Y and then let distributions set it to N when they've got > sufficiently new userspace. Unless someone has a better plan? That makes sense to me given that the firmware doesn't seem to do anything problematic in Linux mode - hopefully we won't have too many more of these systems to contend with. --jt0yj30bxbg11sci Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJVUjlBAAoJECTWi3JdVIfQJWsH/1bCl0sX1B2r7uTlZ2rJq+OW KRdOxTqNfd1wIFcTf1WnYs0MO02ZQtxlvMvmRqSL9tQzgK4NKYkl+pAym9iEZb8f wsrp6nGlC1euYY9GF27xJkVNp8lpJeHkYw34JGHTYLx59ZOAMDIM8TS6ZJsDCRjg nFW5saTXVz9M+qSLR/TyY7374Ah+A47U+u0NZRyofW8GJF97+Uyk8aPuKTb6kbO2 RvNk1EJoWuBMiiwIUIj8kGhLQnS1dVTOjfEucftXJe+TMCvWneqWoEPfrxKodkKF 9iEAIEdMACr/6egvBO1wAgLKJ/BBJKkFcNh1DzFv0dxCqP/W0CApfBgPD3XIi1Q= =xfJ4 -----END PGP SIGNATURE----- --jt0yj30bxbg11sci--