From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=BAYES_00,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4EB5CC388F9 for ; Wed, 11 Nov 2020 09:26:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0109D20797 for ; Wed, 11 Nov 2020 09:26:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726237AbgKKJ00 convert rfc822-to-8bit (ORCPT ); Wed, 11 Nov 2020 04:26:26 -0500 Received: from mail-ed1-f67.google.com ([209.85.208.67]:40184 "EHLO mail-ed1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726136AbgKKJ0Z (ORCPT ); Wed, 11 Nov 2020 04:26:25 -0500 Received: by mail-ed1-f67.google.com with SMTP id p93so1537038edd.7; Wed, 11 Nov 2020 01:26:23 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=OdzB/jIicwSRsIBqe3je5Z5qz8YP6pSQHD6SoGClZyc=; b=eBihg8aBBU8+XvRLEeRyMWgJ/R7iRq30bWNxEX6jE8i4l0MWtLjqVs113coO8B627L BaTkVAuYJuaOLgjQMsjC+uKorbCoDANtXEK5+Dz38D1QUWbpukQf+L3g9nTTdGp5mztR iWEvkxPnYdE87SLdyQ4VEyo31EPmkON9PAyiyoy+o/5tl4Ei46nycn1KvMqrhWEtCMXc 2EmqPUnwgyII9mdxCc9/EIhI2OCHsyS0unncpGOplTcKbqSweGchbffQbi+HMVKIOt+x AX8okiLHj4hLx69d1CbBpwqCwjWL3tguIjppm0VBAXIHLWMNkKaZmvIqMJ3hejKaMRLn 7Sbw== X-Gm-Message-State: AOAM531uFRuDDQXFDc+fr3sE7sla1x3S3KS/7ol97yl5sIcNrXDya8fh XUou3T+CqS3OJFmernlEkTo= X-Google-Smtp-Source: ABdhPJwycZxm4vB3dtSk1cfv3vSWVxzMWnM8OiFZHVme5ZFG51Ffl5xHG5HC9WEEjJoIIV42kr7DPQ== X-Received: by 2002:a05:6402:b02:: with SMTP id bm2mr24912274edb.299.1605086782978; Wed, 11 Nov 2020 01:26:22 -0800 (PST) Received: from kozik-lap (adsl-84-226-167-205.adslplus.ch. [84.226.167.205]) by smtp.googlemail.com with ESMTPSA id k4sm639339edq.73.2020.11.11.01.26.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Nov 2020 01:26:21 -0800 (PST) Date: Wed, 11 Nov 2020 10:26:19 +0100 From: Krzysztof Kozlowski To: Dmitry Osipenko Cc: Thierry Reding , Jonathan Hunter , Georgi Djakov , Rob Herring , Michael Turquette , Stephen Boyd , Peter De Schrijver , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Mikko Perttunen , Viresh Kumar , Peter Geis , Nicolas Chauvet , linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: Re: [PATCH v8 11/26] memory: tegra124-emc: Make driver modular Message-ID: <20201111092619.GD4050@kozik-lap> References: <20201111011456.7875-1-digetx@gmail.com> <20201111011456.7875-12-digetx@gmail.com> <20201111090434.GB4050@kozik-lap> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8BIT In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On Wed, Nov 11, 2020 at 12:17:37PM +0300, Dmitry Osipenko wrote: > 11.11.2020 12:04, Krzysztof Kozlowski пишет: > >> -obj-$(CONFIG_TEGRA124_EMC) += clk-tegra124-emc.o > >> +obj-$(CONFIG_ARCH_TEGRA_124_SOC) += clk-tegra124-emc.o > >> +obj-$(CONFIG_ARCH_TEGRA_132_SOC) += clk-tegra124-emc.o > > How is it related to modularization? It looks like different issue is > > fixed here. > > The CONFIG_TEGRA124_EMC now could be 'm', while the clock code must be > built-in. The TEGRA124 EMC driver is used by T124 and T132 SoCs.\ Mhmm, the CONFIG_TEGRA124_EMC depends on ARCH_TEGRA_124_SOC so on the config !ARCH_TEGRA_124_SOC && ARCH_TEGRA_132_SOC this was not selected. Now it will be selected. > > ... > >> diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h > >> index 6b565f6b5f66..2da7c93c1a6c 100644 > >> --- a/drivers/clk/tegra/clk.h > >> +++ b/drivers/clk/tegra/clk.h > >> @@ -881,18 +881,6 @@ void tegra_super_clk_gen5_init(void __iomem *clk_base, > >> void __iomem *pmc_base, struct tegra_clk *tegra_clks, > >> struct tegra_clk_pll_params *pll_params); > >> > >> -#ifdef CONFIG_TEGRA124_EMC > >> -struct clk *tegra_clk_register_emc(void __iomem *base, struct device_node *np, > >> - spinlock_t *lock); > >> -#else > >> -static inline struct clk *tegra_clk_register_emc(void __iomem *base, > >> - struct device_node *np, > >> - spinlock_t *lock) > >> -{ > >> - return NULL; > >> -} > >> -#endif > > Why clock changes are so tightly coupled with making an EMC driver > > modular? Usually this should be a separate change - you adjust any > > dependencies to accept late or deferred probing, exported symbols, > > loosen the coupling between drivers, etc. and then you convert something > > to module. > > Because the clock and EMC driver were not separated from each other > previously. The clock part can't be modularized easily and probably > shouldn't. > > I'm not sure whether it's actually possible to split this patch without > taking a closer a look. > > I'm also doubt that it would really worth the effort for a 100 lines of > a changed code. Indeed, the clk and emc drivers are so tightly coupled that anyway it would be big patch to change the interfaces followed up a small one making emc module. OK. Best regards, Krzysztof From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=BAYES_00,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 989C1C388F9 for ; Wed, 11 Nov 2020 09:26:26 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2A2372075A for ; Wed, 11 Nov 2020 09:26:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2A2372075A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 43FAA6E02C; Wed, 11 Nov 2020 09:26:25 +0000 (UTC) Received: from mail-ed1-f67.google.com (mail-ed1-f67.google.com [209.85.208.67]) by gabe.freedesktop.org (Postfix) with ESMTPS id 687146E02C for ; Wed, 11 Nov 2020 09:26:24 +0000 (UTC) Received: by mail-ed1-f67.google.com with SMTP id t11so1504753edj.13 for ; Wed, 11 Nov 2020 01:26:24 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=OdzB/jIicwSRsIBqe3je5Z5qz8YP6pSQHD6SoGClZyc=; b=nnPGhkRRS5D59wrA26umaomaUyj65nEocLEmHQTitsYO6MFcUabozorkv6KEznO24P CsrDhjLmLqQgm2VKlqRK4EyP/N4LWeCT4rwKQFC0VmRwRErK7L3VcQTQ1z1dR1Ahpunz Pwv+SP10woX/Y0yJ8ijNqw0PTXeCgPyKm+BlGZf4r46Iz5ECWOR/y6PkjLVR+Df9YHYt IXD4EJI3Z5agaA9rCNcxgZpW/hBvMx4PlMI5Cy9D43fM85CKQwN4XLtI8DypOliO3+2m XsWFO0KtAB/66/gtPeJmVcXVZGTpMRYygaa3JELzOoF7zUnL6oJKgPR4LSlgyckZ37jf z9tg== X-Gm-Message-State: AOAM531FoL7BdGy2tE5mJbgPLxxtww581PJ63JbSrqqDTJqTlRz9Ib/o NnmM+KeotRSlk20SI2AMkcE= X-Google-Smtp-Source: ABdhPJwycZxm4vB3dtSk1cfv3vSWVxzMWnM8OiFZHVme5ZFG51Ffl5xHG5HC9WEEjJoIIV42kr7DPQ== X-Received: by 2002:a05:6402:b02:: with SMTP id bm2mr24912274edb.299.1605086782978; Wed, 11 Nov 2020 01:26:22 -0800 (PST) Received: from kozik-lap (adsl-84-226-167-205.adslplus.ch. [84.226.167.205]) by smtp.googlemail.com with ESMTPSA id k4sm639339edq.73.2020.11.11.01.26.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Nov 2020 01:26:21 -0800 (PST) Date: Wed, 11 Nov 2020 10:26:19 +0100 From: Krzysztof Kozlowski To: Dmitry Osipenko Subject: Re: [PATCH v8 11/26] memory: tegra124-emc: Make driver modular Message-ID: <20201111092619.GD4050@kozik-lap> References: <20201111011456.7875-1-digetx@gmail.com> <20201111011456.7875-12-digetx@gmail.com> <20201111090434.GB4050@kozik-lap> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter De Schrijver , Mikko Perttunen , dri-devel@lists.freedesktop.org, Nicolas Chauvet , Stephen Boyd , Viresh Kumar , Michael Turquette , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Herring , Jonathan Hunter , Chanwoo Choi , Kyungmin Park , Thierry Reding , MyungJoo Ham , Peter Geis , linux-tegra@vger.kernel.org, Georgi Djakov Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" T24gV2VkLCBOb3YgMTEsIDIwMjAgYXQgMTI6MTc6MzdQTSArMDMwMCwgRG1pdHJ5IE9zaXBlbmtv IHdyb3RlOgo+IDExLjExLjIwMjAgMTI6MDQsIEtyenlzenRvZiBLb3psb3dza2kg0L/QuNGI0LXR gjoKPiA+PiAtb2JqLSQoQ09ORklHX1RFR1JBMTI0X0VNQykJCSs9IGNsay10ZWdyYTEyNC1lbWMu bwo+ID4+ICtvYmotJChDT05GSUdfQVJDSF9URUdSQV8xMjRfU09DKQkrPSBjbGstdGVncmExMjQt ZW1jLm8KPiA+PiArb2JqLSQoQ09ORklHX0FSQ0hfVEVHUkFfMTMyX1NPQykJKz0gY2xrLXRlZ3Jh MTI0LWVtYy5vCj4gPiBIb3cgaXMgaXQgcmVsYXRlZCB0byBtb2R1bGFyaXphdGlvbj8gSXQgbG9v a3MgbGlrZSBkaWZmZXJlbnQgaXNzdWUgaXMKPiA+IGZpeGVkIGhlcmUuCj4gCj4gVGhlIENPTkZJ R19URUdSQTEyNF9FTUMgbm93IGNvdWxkIGJlICdtJywgd2hpbGUgdGhlIGNsb2NrIGNvZGUgbXVz dCBiZQo+IGJ1aWx0LWluLiBUaGUgVEVHUkExMjQgRU1DIGRyaXZlciBpcyB1c2VkIGJ5IFQxMjQg YW5kIFQxMzIgU29Dcy5cCgpNaG1tLCAgdGhlIENPTkZJR19URUdSQTEyNF9FTUMgZGVwZW5kcyBv biBBUkNIX1RFR1JBXzEyNF9TT0Mgc28gb24gdGhlCmNvbmZpZyAhQVJDSF9URUdSQV8xMjRfU09D ICYmIEFSQ0hfVEVHUkFfMTMyX1NPQyB0aGlzIHdhcyBub3QKc2VsZWN0ZWQuIE5vdyBpdCB3aWxs IGJlIHNlbGVjdGVkLgoKPiAKPiAuLi4KPiA+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9jbGsvdGVn cmEvY2xrLmggYi9kcml2ZXJzL2Nsay90ZWdyYS9jbGsuaAo+ID4+IGluZGV4IDZiNTY1ZjZiNWY2 Ni4uMmRhN2M5M2MxYTZjIDEwMDY0NAo+ID4+IC0tLSBhL2RyaXZlcnMvY2xrL3RlZ3JhL2Nsay5o Cj4gPj4gKysrIGIvZHJpdmVycy9jbGsvdGVncmEvY2xrLmgKPiA+PiBAQCAtODgxLDE4ICs4ODEs NiBAQCB2b2lkIHRlZ3JhX3N1cGVyX2Nsa19nZW41X2luaXQodm9pZCBfX2lvbWVtICpjbGtfYmFz ZSwKPiA+PiAgCQkJdm9pZCBfX2lvbWVtICpwbWNfYmFzZSwgc3RydWN0IHRlZ3JhX2NsayAqdGVn cmFfY2xrcywKPiA+PiAgCQkJc3RydWN0IHRlZ3JhX2Nsa19wbGxfcGFyYW1zICpwbGxfcGFyYW1z KTsKPiA+PiAgCj4gPj4gLSNpZmRlZiBDT05GSUdfVEVHUkExMjRfRU1DCj4gPj4gLXN0cnVjdCBj bGsgKnRlZ3JhX2Nsa19yZWdpc3Rlcl9lbWModm9pZCBfX2lvbWVtICpiYXNlLCBzdHJ1Y3QgZGV2 aWNlX25vZGUgKm5wLAo+ID4+IC0JCQkJICAgc3BpbmxvY2tfdCAqbG9jayk7Cj4gPj4gLSNlbHNl Cj4gPj4gLXN0YXRpYyBpbmxpbmUgc3RydWN0IGNsayAqdGVncmFfY2xrX3JlZ2lzdGVyX2VtYyh2 b2lkIF9faW9tZW0gKmJhc2UsCj4gPj4gLQkJCQkJCSBzdHJ1Y3QgZGV2aWNlX25vZGUgKm5wLAo+ ID4+IC0JCQkJCQkgc3BpbmxvY2tfdCAqbG9jaykKPiA+PiAtewo+ID4+IC0JcmV0dXJuIE5VTEw7 Cj4gPj4gLX0KPiA+PiAtI2VuZGlmCj4gPiBXaHkgY2xvY2sgY2hhbmdlcyBhcmUgc28gdGlnaHRs eSBjb3VwbGVkIHdpdGggbWFraW5nIGFuIEVNQyBkcml2ZXIKPiA+IG1vZHVsYXI/IFVzdWFsbHkg dGhpcyBzaG91bGQgYmUgYSBzZXBhcmF0ZSBjaGFuZ2UgLSB5b3UgYWRqdXN0IGFueQo+ID4gZGVw ZW5kZW5jaWVzIHRvIGFjY2VwdCBsYXRlIG9yIGRlZmVycmVkIHByb2JpbmcsIGV4cG9ydGVkIHN5 bWJvbHMsCj4gPiBsb29zZW4gdGhlIGNvdXBsaW5nIGJldHdlZW4gZHJpdmVycywgZXRjLiBhbmQg dGhlbiB5b3UgY29udmVydCBzb21ldGhpbmcKPiA+IHRvIG1vZHVsZS4KPiAKPiBCZWNhdXNlIHRo ZSBjbG9jayBhbmQgRU1DIGRyaXZlciB3ZXJlIG5vdCBzZXBhcmF0ZWQgZnJvbSBlYWNoIG90aGVy Cj4gcHJldmlvdXNseS4gVGhlIGNsb2NrIHBhcnQgY2FuJ3QgYmUgbW9kdWxhcml6ZWQgZWFzaWx5 IGFuZCBwcm9iYWJseQo+IHNob3VsZG4ndC4KPiAKPiBJJ20gbm90IHN1cmUgd2hldGhlciBpdCdz IGFjdHVhbGx5IHBvc3NpYmxlIHRvIHNwbGl0IHRoaXMgcGF0Y2ggd2l0aG91dAo+IHRha2luZyBh IGNsb3NlciBhIGxvb2suCj4gCj4gSSdtIGFsc28gZG91YnQgdGhhdCBpdCB3b3VsZCByZWFsbHkg d29ydGggdGhlIGVmZm9ydCBmb3IgYSAxMDAgbGluZXMgb2YKPiBhIGNoYW5nZWQgY29kZS4KCklu ZGVlZCwgdGhlIGNsayBhbmQgZW1jIGRyaXZlcnMgYXJlIHNvIHRpZ2h0bHkgY291cGxlZCB0aGF0 IGFueXdheSBpdAp3b3VsZCBiZSBiaWcgcGF0Y2ggdG8gY2hhbmdlIHRoZSBpbnRlcmZhY2VzIGZv bGxvd2VkIHVwIGEgc21hbGwgb25lCm1ha2luZyBlbWMgbW9kdWxlLiBPSy4KCkJlc3QgcmVnYXJk cywKS3J6eXN6dG9mCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5v cmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2 ZWwK