Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755053AbcJZVer (ORCPT ); Wed, 26 Oct 2016 17:34:47 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:50451 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S941913AbcJZVcd (ORCPT ); Wed, 26 Oct 2016 17:32:33 -0400 Date: Wed, 26 Oct 2016 14:33:23 -0700 From: Darren Hart To: "Tirdea, Irina" Cc: Thomas Gleixner , "linux-clk@vger.kernel.org" , "x86@kernel.org" , Stephen Boyd , Ingo Molnar , Michael Turquette , "H. Peter Anvin" , "alsa-devel@alsa-project.org" , Mark Brown , Takashi Iwai , "Bossart, Pierre-louis" , LKML , Pierre-Louis Bossart Subject: Re: [RESEND PATCH v4] clk: x86: Add Atom PMC platform clocks Message-ID: <20161026213323.GB23374@f23x64.localdomain> References: <1476735320-4315-1-git-send-email-irina.tirdea@intel.com> <20161021045932.GA90338@f23x64.localdomain> <1F3AC3675D538145B1661F571FE1805F2F387575@irsmsx105.ger.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1F3AC3675D538145B1661F571FE1805F2F387575@irsmsx105.ger.corp.intel.com> User-Agent: Mutt/1.7.0 (2016-08-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3143 Lines: 76 On Mon, Oct 24, 2016 at 01:38:54PM +0000, Tirdea, Irina wrote: > > On Thu, Oct 20, 2016 at 11:52:38PM +0200, Thomas Gleixner wrote: > > > On Mon, 17 Oct 2016, Irina Tirdea wrote: > > > > The patch has already been reviewed by Stephen Boyd [1]. > > > > The only remaining question is the one pointed out by Stephen: > > > > "Will there be problems if this merges through clk tree? If so we > > > > could take the clk driver part and the platform data include part > > > > could be duplicated into both trees. Or clk tree could be pulled > > > > into x86?" [1] > > > > > > The proper thing to do is: > > > > > > Move all that cruft including arch/x86/platform/atom/pmc_atom.c into > > > drivers/platform/x86. There is nothing architecture specific in these > > > files. It's pure peripheral driver enablement. So drivers/platform/x86 is > > > the proper location for this. Please discuss this with Darren Hart (cc'ed). > > > > Thanks for pointing me in the right direction, Thomas! > > > We've been adding more of the pmc and punit drivers to drivers/platform/x86. > > This makes more sense than being under "arch". Thomas and I have discussed > > moving more of the non architectural stuff in arch/x86/platform to my tree under > > platform/drivers/x86. > > > > Thanks for the reply, Darren. > > I could move the arch/x86/platform/atom/pmc_atom.c into drivers/platform/x86, > but I'm not sure what the process is in this case. I took a look at your tree and noticed > some intel_pmc_* drivers, but they are quite different from pmc_atom.c in terms of > HW registers and capabilities. Should the code from pmc_atom.c be integrated in the > intel_pmc_* drivers or is it enough to move it as a standalone driver for now? If the functionality is substantially different, then I don't see a compelling, and certainly not an immediate, need to merge them. Assume for now they are to remain as separate drivers. I suggest keeping the existing name for now as well. Let's just complete the move with as little user-visible changes as possible. The placement of the header file is a bit tricky as it is being used in drivers/clk/x86 in addition to the pmc_atom driver in drivers/platform/x86. The best existing location would appear to be include/platform_data/ Thomas, is that acceptable to you? arch/x86/platform/atom/pmc_atom.c -> drivers/platform/x86 arch/x86/include/asm/pmc_atom.h -> include/platform_data/ If there are enough of these, it might make sense to create: include/platform/x86/ but I suggest we start with minimal change. > > > Irina, please point me at the relevant context if it's more than just this > > particular patch. > > This patch comes from a set of patches that enable sound for Baytrail CR devices > (especially Asus T100TAF) [1]. The rest of the patches have been already merged in > Mark's sound tree. This is the only change remaining for enabling sound on these > platforms, so there are no additional changes to the x86 platform code. > > Thanks, > Irina > > [1] http://mailman.alsa-project.org/pipermail/alsa-devel/2016-August/111704.html > > -- Darren Hart Intel Open Source Technology Center