From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759580Ab3KMQgb (ORCPT ); Wed, 13 Nov 2013 11:36:31 -0500 Received: from cassiel.sirena.org.uk ([80.68.93.111]:50679 "EHLO cassiel.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757210Ab3KMQg3 (ORCPT ); Wed, 13 Nov 2013 11:36:29 -0500 Date: Wed, 13 Nov 2013 16:30:55 +0000 From: Mark Brown To: Vinod Koul Cc: Florian Meier , Stephen Warren , Dan Williams , linux-rpi-kernel , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, Liam Girdwood , alsa-devel@alsa-project.org, Martin Sperl Message-ID: <20131113163055.GV878@sirena.org.uk> References: <527D1DDA.2040004@koalo.de> <20131108181743.GR2493@sirena.org.uk> <20131113050017.GO8834@intel.com> <20131113125111.GE878@sirena.org.uk> <20131113133536.GZ8834@intel.com> <20131113145441.GQ878@sirena.org.uk> <20131113143101.GD8834@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="9o1Xi4ZMQ45MudWG" Content-Disposition: inline In-Reply-To: <20131113143101.GD8834@intel.com> X-Cookie: Long life is in store for you. User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: 149.254.183.27 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Re: [PATCH] dmaengine: Add support for BCM2835. 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 --9o1Xi4ZMQ45MudWG Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Nov 13, 2013 at 08:01:01PM +0530, Vinod Koul wrote: > On Wed, Nov 13, 2013 at 02:54:41PM +0000, Mark Brown wrote: > > Yes, though I think some of the stuff Martin was talking about will need > > changes to the dmaengine APIs. He was wanting to reuse DMA lists which > > currently dmaengine needs to have built up each time. > Can you elobrate a bit more on what you guys want to do here? He wants to be able to submit a descriptor to the hardware more than once to save on the costs of of constructing the descriptor. I'm not convinced this is a huge benefit most of the time. --9o1Xi4ZMQ45MudWG Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJSg6k8AAoJELSic+t+oim9+joP/2v+7ur1ArziF81LX0Mb3ujr fDLROLY/aglhlbTL/giThm+O/wdqmcA2yndlZIrVH5tdIJhGSurwQrkuuFNidL/v tEu+RbPar9dKcNKJgUHYVNWkh6Yz5JxJkNQj5HV8vgVkG1XSqU82PTCH4FBUJl0l vErAYNk2gd09dQqZ9xzIiIjbBuFbXVGpfi+VxocGRgwc5L2+NhypGk9n1w/QjcTY wCFNcodvKg//Y9i4GZzaOoGbAqX7awZYom1LECZrNRJGjkloxDb+1Bcdx2zvAZts RXxJayHEjF/UHrHoOgSxLm2jtmFo1v9B5H3T4+W/52k8mHMc3B2CmmmKEpTbOsCZ pOGl9r8vddum+ZGrGdR342pDbcaWb5eVoW3SS+SNAykwAY+MJ/A4jnepLUtsGcrs yDIXMkb2v1fmFpsu3iCF9iS+ptnzP3xcxsj2m/FVtstncA0AdgsY114BSY7EUI5C XozE9k5xr653d7k8aQgcEJgdIu7T7Y5lTmR+WLUIaIf8ZvXMTVjISMG7Oe0z93hR DIuvocD5unnqg5iZffAR792UpMYlW6/UTz0ubLHyDba/HfFdXTjsclT97rKNO9Od ciiXrsWeH8+BGFjfTTcAY+WnYMMuug7DBWI14zNcNlTm75E3hNg8j/d2iTbyCD7a AzuzjGapsEAP4zCG+wsm =o5Dd -----END PGP SIGNATURE----- --9o1Xi4ZMQ45MudWG--