From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751853Ab3JEKbq (ORCPT ); Sat, 5 Oct 2013 06:31:46 -0400 Received: from cassiel.sirena.org.uk ([80.68.93.111]:46429 "EHLO cassiel.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750936Ab3JEKbo (ORCPT ); Sat, 5 Oct 2013 06:31:44 -0400 Date: Sat, 5 Oct 2013 11:31:06 +0100 From: Mark Brown To: Mika Westerberg Cc: Wolfram Sang , linux-i2c@vger.kernel.org, rjw@rjwysocki.net, Aaron Lu , Lv Zheng , Kevin Hilman , Sylwester Nawrocki , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org Message-ID: <20131005103106.GX27287@sirena.org.uk> References: <1380552228-23329-2-git-send-email-mika.westerberg@linux.intel.com> <1380632982-10709-1-git-send-email-mika.westerberg@linux.intel.com> <20131005080901.GQ28875@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="TbvQLmyOl28t66Jz" Content-Disposition: inline In-Reply-To: <20131005080901.GQ28875@intel.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: 94.175.92.69 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Re: [PATCH v4] i2c: enable runtime PM for I2C adapter devices enumerated from ACPI X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:57:07 +0000) X-SA-Exim-Scanned: Yes (on cassiel.sirena.org.uk) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --TbvQLmyOl28t66Jz Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sat, Oct 05, 2013 at 11:09:01AM +0300, Mika Westerberg wrote: > It looks like Windows actually powers the I2C controller off independently > of the I2C client power state. We should probably do the same in Linux even > though it is not following what the ACPI spec says (but makes sense with > serial buses like I2C and SPI). Sounds like it's probably worth going to the effort of getting the spec amended... --TbvQLmyOl28t66Jz Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.21 (GNU/Linux) iQIcBAEBAgAGBQJST+pnAAoJELSic+t+oim9w9UP/RVUc3CNBP4r86nPFZL1CuW0 PQQp7vxoQM6jJJvaNRMiMMhgI43FKj2XdhwuLiQpDuIAy0kU2j8LorgYi3/JgWgy Zr7uzbQY2s/3KolUd1TySw2Gxe3CNdDuN8fytTYBKW+U6l6vcAjw5s+xUSyXveXB SY2diiAtXpbXFADR+JhjvIHviDGSsQ0NyFYDismzWTiwLA5oRaT81/hVvkNnrxxD /glj2ZYzrVxL6cASA94b8JlZfOCl8WSAIvX42V3VbATc62lMUqTQosfSXj0wGBDF 9KbbvRNfQr9ilKCoBhxX0hPXH6mmqvbX2yDkVxEKc9DitAhBtZ8Ba6zgBc2A7iWO v7i98Dxny8t/VWF18q5rjs/CZG52JC7zmxpwJ9r1YNSTHVRkllfHx4GZMT6JQNao HjdCg79PgUPTS7EdaOb+i6ircogOSjOxEBnMpmorvRlvKpOzp3AMe/cicWPc9Viz oJV9eN0sLrLony07/7v/3cOqNGrSiGxPVdnima1Yeghql4l8GjsFe3UFHZk1IUSi 6vhLsSofftqFeKLOmY32ADhj1CjzhS8xy2mr0NPI+L5D6JmLeIuBsIdlt5YhKdbm 6HCq+/zTW10fWkaUpFoPD87Ss4qRPXLea0ujBZsXytEmnNsRT5JI9uJgJZQa7nXt ZYKoX/zcDbJmNwEAj5dv =EfJ0 -----END PGP SIGNATURE----- --TbvQLmyOl28t66Jz--