From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752799Ab1HPNu5 (ORCPT ); Tue, 16 Aug 2011 09:50:57 -0400 Received: from wolverine01.qualcomm.com ([199.106.114.254]:57525 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752391Ab1HPNuz (ORCPT ); Tue, 16 Aug 2011 09:50:55 -0400 X-IronPort-AV: E=McAfee;i="5400,1158,6439"; a="110658949" Date: Tue, 16 Aug 2011 06:50:51 -0700 From: David Brown To: Arnd Bergmann Cc: Mark Brown , Kenneth Heitke , davidb@codeaurora.org, bryanh@codeaurora.org, linux-arm-msm@vger.kernel.org, Sagar Dharia , rdunlap@xenotime.net, rmk+kernel@arm.linux.org.uk, john.stultz@linaro.org, akpm@linux-foundation.org, ohad@wizery.com, gregkh@suse.de, stefanr@s5r6.in-berlin.de, lethal@linux-sh.org, linville@tuxdriver.com, zajec5@gmail.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH] slimbus: Linux driver framework for SLIMbus. Message-ID: <20110816135051.GA22227@huya.qualcomm.com> References: <1313019091-15354-1-git-send-email-kheitke@codeaurora.org> <201108111455.56319.arnd@arndb.de> <20110812164608.GC28150@sirena.org.uk> <201108161537.28612.arnd@arndb.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201108161537.28612.arnd@arndb.de> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 16, 2011 at 03:37:28PM +0200, Arnd Bergmann wrote: > On Friday 12 August 2011, Mark Brown wrote: > > On Thu, Aug 11, 2011 at 02:55:55PM +0200, Arnd Bergmann wrote: > > > On Thursday 11 August 2011, Kenneth Heitke wrote: > > > > > > +EXPORT_SYMBOL_GPL(slim_add_device); > > > > > I don't think this should be exported: AFAICT, the set of slim_devices > > > is a property of the platform, so I don't see how any other device driver > > > would add another device. > > > > The platform may be comprised of multiple hardwaare modules with > > functionality on daughtercards which can be probed at runtime. You may > > also find someone constructing a PCI card or something with a slimbus > > controller on it at some point. > > This is theoretically true, but IIRC David mentioned that the bus is > only present on few SoCs and has since been abandoned in favor of standard > busses for new devices. Actually, this is a different one than the one I was mentioning at the Linaro Connect. I believe SLIMbus is more active http://en.wikipedia.org/wiki/SLIMbus The other bus I was mentioning is called SSBI, which as far as I know is only used to communicate between MSMs and certain Qualcomm peripheral chips. Kenneth would better be able to clarify how dynamic the SLIMbus is. David -- Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.