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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 4CF23C433E9 for ; Wed, 23 Dec 2020 20:39:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 15BF3224B2 for ; Wed, 23 Dec 2020 20:39:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728891AbgLWUj3 (ORCPT ); Wed, 23 Dec 2020 15:39:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35076 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727498AbgLWUj2 (ORCPT ); Wed, 23 Dec 2020 15:39:28 -0500 Received: from mail-lf1-x134.google.com (mail-lf1-x134.google.com [IPv6:2a00:1450:4864:20::134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2FC16C061794; Wed, 23 Dec 2020 12:38:48 -0800 (PST) Received: by mail-lf1-x134.google.com with SMTP id 23so253318lfg.10; Wed, 23 Dec 2020 12:38:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=BZZtJhCkWZc0cTu4suSdN5Dy6qe4mWg5o8z0m1xWmmw=; b=ryiTXp95qJn3hFRmeJjFriZA3fRZe1LJkWmcStreS7S1HQzZvQ0MFhnfpf8nwhNZ+4 byR/kGF7kq8hlx5i8bOSUk5NbfdQl49IIHl5VzTJhFAUygr8vLTNhJ6H9Fr/z4s+Who0 JSriRDvMEt/sMeC73CcldS07HXFoDDBz34L54otuUG5Pah50GAz4ZCG0agHFcRBy4X2B uyI9p6Hg2CYCO7Yg+T9pERyUpRZJUMR2bvIpKnby2t9wroelhS9PxVj2Q6pIuSrKlNIU RU2TtFLooW88UoEwgf+7Giff7nBqFk13MWhzd5vTNj//iXu3ditDHhkIaXA/gzp/AW4E TNOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=BZZtJhCkWZc0cTu4suSdN5Dy6qe4mWg5o8z0m1xWmmw=; b=Aq94JeFAYshv6j108td46upSWxVu9zLt/MGZlJYnooKT0lOlCzDN7nj2Hv2YMn32AG bU2xbfSIrlqAfZHnafJ+mtp1OvNTbVgReX2ZZRjPf2pRtOMu80wYtv/w/9PoKQ/Es3el 4r92PUNXIO73w0oNVw4LDto8n6p1tOf5QrhYSsWb/fLMB+tBNJv11SVs8CAS+6QqwPtV ZxmVdx28yPCLPA08duTgHVNXnkbmCZe767PuRcrlzIDip4rtq+JmjuASbuTmCLAFueZS +DFlmK4R+ig2PJFEr3qrBFXhzYrDgKJQPz57vEa2HJuATx3uyk7xVNpiRjQNeebmUMHb kZsg== X-Gm-Message-State: AOAM532bnOiVHX+G8DcQp346vfIAblsi2ewfiQXdfROjCKDEqykXai9C TyWeIjD5C4qDE6q76Qh+xbrEReT3t8Y= X-Google-Smtp-Source: ABdhPJwfBMyGf+UGyLbLjeTseB6B9wXUQfbXnzUgDrthVMBm31fXo34JrVL1gowO+ssG8p2R1uqvrg== X-Received: by 2002:a19:f718:: with SMTP id z24mr12249722lfe.532.1608755926503; Wed, 23 Dec 2020 12:38:46 -0800 (PST) Received: from [192.168.2.145] (109-252-192-57.dynamic.spd-mgts.ru. [109.252.192.57]) by smtp.googlemail.com with ESMTPSA id z3sm3378258lfj.140.2020.12.23.12.38.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 23 Dec 2020 12:38:46 -0800 (PST) Subject: Re: [PATCH v2 15/48] opp: Support set_opp() customization without requiring to use regulators To: Viresh Kumar Cc: Thierry Reding , Jonathan Hunter , Mark Brown , Liam Girdwood , Ulf Hansson , Mauro Carvalho Chehab , Rob Herring , Peter Geis , Nicolas Chauvet , Krzysztof Kozlowski , "Rafael J. Wysocki" , Kevin Hilman , Peter De Schrijver , Viresh Kumar , Stephen Boyd , Michael Turquette , devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linux-tegra@vger.kernel.org, linux-clk@vger.kernel.org References: <20201217180638.22748-1-digetx@gmail.com> <20201217180638.22748-16-digetx@gmail.com> <20201223060101.v2qihvvgsmpahg24@vireshk-i7> From: Dmitry Osipenko Message-ID: Date: Wed, 23 Dec 2020 23:38:44 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 MIME-Version: 1.0 In-Reply-To: <20201223060101.v2qihvvgsmpahg24@vireshk-i7> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org 23.12.2020 09:01, Viresh Kumar пишет: > On 17-12-20, 21:06, Dmitry Osipenko wrote: >> Support set_opp() customization without requiring to use regulators. This >> is needed by drivers which want to use dev_pm_opp_set_rate() for changing >> rates of a multiple clocks and don't need to touch regulator. >> >> One example is NVIDIA Tegra30/114 SoCs which have two sibling 3D hardware >> units which should be use to the same clock rate, meanwhile voltage >> scaling is done using a power domain. In this case OPP table doesn't have >> a regulator, causing a NULL dereference in _set_opp_custom(). >> >> Signed-off-by: Dmitry Osipenko >> --- >> drivers/opp/core.c | 16 ++++++++++++---- >> 1 file changed, 12 insertions(+), 4 deletions(-) >> >> diff --git a/drivers/opp/core.c b/drivers/opp/core.c >> index 3d02fe33630b..625dae7a5ecb 100644 >> --- a/drivers/opp/core.c >> +++ b/drivers/opp/core.c >> @@ -828,17 +828,25 @@ static int _set_opp_custom(const struct opp_table *opp_table, >> struct dev_pm_opp_supply *old_supply, >> struct dev_pm_opp_supply *new_supply) >> { >> - struct dev_pm_set_opp_data *data; >> + struct dev_pm_set_opp_data *data, tmp_data; >> + unsigned int regulator_count; >> int size; >> >> - data = opp_table->set_opp_data; >> + if (opp_table->set_opp_data) { >> + data = opp_table->set_opp_data; >> + regulator_count = opp_table->regulator_count; >> + } else { >> + data = &tmp_data; >> + regulator_count = 0; >> + } >> + > > We should use the same structure, you can add some checks but not replace the > structure altogether. Well, there is no "same structure", the opp_table->set_opp_data is NULL there. I can re-write it like this if it looks better to you: static int _set_opp_custom(...) { struct dev_pm_set_opp_data *data; unsigned int regulator_count; int size; + if (!opp_table->set_opp_data) { + struct dev_pm_set_opp_data freq_data = {}; + + freq_data.dev = dev; + freq_data.clk = opp_table->clk; + freq_data.new_opp.rate = freq; + freq_data.old_opp.rate = old_freq; + + return opp_table->set_opp(&freq_data); + } 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=-13.6 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=unavailable 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 1E9AFC433E6 for ; Fri, 25 Dec 2020 09:42:37 +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 DCFCC230FF for ; Fri, 25 Dec 2020 09:42:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DCFCC230FF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com 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 1C20789BD4; Fri, 25 Dec 2020 09:42:13 +0000 (UTC) Received: from mail-lf1-x132.google.com (mail-lf1-x132.google.com [IPv6:2a00:1450:4864:20::132]) by gabe.freedesktop.org (Postfix) with ESMTPS id 05BC289EF7 for ; Wed, 23 Dec 2020 20:38:48 +0000 (UTC) Received: by mail-lf1-x132.google.com with SMTP id h22so348779lfu.2 for ; Wed, 23 Dec 2020 12:38:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=BZZtJhCkWZc0cTu4suSdN5Dy6qe4mWg5o8z0m1xWmmw=; b=ryiTXp95qJn3hFRmeJjFriZA3fRZe1LJkWmcStreS7S1HQzZvQ0MFhnfpf8nwhNZ+4 byR/kGF7kq8hlx5i8bOSUk5NbfdQl49IIHl5VzTJhFAUygr8vLTNhJ6H9Fr/z4s+Who0 JSriRDvMEt/sMeC73CcldS07HXFoDDBz34L54otuUG5Pah50GAz4ZCG0agHFcRBy4X2B uyI9p6Hg2CYCO7Yg+T9pERyUpRZJUMR2bvIpKnby2t9wroelhS9PxVj2Q6pIuSrKlNIU RU2TtFLooW88UoEwgf+7Giff7nBqFk13MWhzd5vTNj//iXu3ditDHhkIaXA/gzp/AW4E TNOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=BZZtJhCkWZc0cTu4suSdN5Dy6qe4mWg5o8z0m1xWmmw=; b=TKRG7iyENMlg2OShmuyykQFBTugQp+8EmMJ3/SmPlhNrnzAURcHcM0VJs2rtl3nsTa T791S08lxjISrmCer13QJggSTVP6Jpk9QVET2VGiX1pjG9GYhm8fzWXqZNnSdb/O05xs PirUMo3y2ktzDCQuj2WbWQC+l8dQAmCL3HMd+nosGuvG892Q4nP48XppHR+/mTpQ8Noi Uo9mGDGRwrnTIx0DK3C/FTi7NUOOgHLuAfxXZMqH/8bWRacrpT8qV5cZqPvJ01WG/QZ5 agYsEdxx6Kjy3ZxULHo44DibhYCd/13xBkFERNWMMpGJIX7EiabFm59QhRMAaT/5JoXL 0ihA== X-Gm-Message-State: AOAM5317iK/xrE33B+svPfNVVdPRVTTbWhjGQ4un2FqHfmaonUsunCxk lzAm53DglOKGOVuZS30grao= X-Google-Smtp-Source: ABdhPJwfBMyGf+UGyLbLjeTseB6B9wXUQfbXnzUgDrthVMBm31fXo34JrVL1gowO+ssG8p2R1uqvrg== X-Received: by 2002:a19:f718:: with SMTP id z24mr12249722lfe.532.1608755926503; Wed, 23 Dec 2020 12:38:46 -0800 (PST) Received: from [192.168.2.145] (109-252-192-57.dynamic.spd-mgts.ru. [109.252.192.57]) by smtp.googlemail.com with ESMTPSA id z3sm3378258lfj.140.2020.12.23.12.38.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 23 Dec 2020 12:38:46 -0800 (PST) Subject: Re: [PATCH v2 15/48] opp: Support set_opp() customization without requiring to use regulators To: Viresh Kumar References: <20201217180638.22748-1-digetx@gmail.com> <20201217180638.22748-16-digetx@gmail.com> <20201223060101.v2qihvvgsmpahg24@vireshk-i7> From: Dmitry Osipenko Message-ID: Date: Wed, 23 Dec 2020 23:38:44 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 MIME-Version: 1.0 In-Reply-To: <20201223060101.v2qihvvgsmpahg24@vireshk-i7> Content-Language: en-US X-Mailman-Approved-At: Fri, 25 Dec 2020 09:42:09 +0000 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: Ulf Hansson , Michael Turquette , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Thierry Reding , linux-clk@vger.kernel.org, devel@driverdev.osuosl.org, Kevin Hilman , Nicolas Chauvet , Viresh Kumar , Krzysztof Kozlowski , Jonathan Hunter , linux-media@vger.kernel.org, devicetree@vger.kernel.org, Rob Herring , linux-tegra@vger.kernel.org, Mauro Carvalho Chehab , Stephen Boyd , Peter De Schrijver , "Rafael J. Wysocki" , Liam Girdwood , Mark Brown , Peter Geis Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" MjMuMTIuMjAyMCAwOTowMSwgVmlyZXNoIEt1bWFyINC/0LjRiNC10YI6Cj4gT24gMTctMTItMjAs IDIxOjA2LCBEbWl0cnkgT3NpcGVua28gd3JvdGU6Cj4+IFN1cHBvcnQgc2V0X29wcCgpIGN1c3Rv bWl6YXRpb24gd2l0aG91dCByZXF1aXJpbmcgdG8gdXNlIHJlZ3VsYXRvcnMuIFRoaXMKPj4gaXMg bmVlZGVkIGJ5IGRyaXZlcnMgd2hpY2ggd2FudCB0byB1c2UgZGV2X3BtX29wcF9zZXRfcmF0ZSgp IGZvciBjaGFuZ2luZwo+PiByYXRlcyBvZiBhIG11bHRpcGxlIGNsb2NrcyBhbmQgZG9uJ3QgbmVl ZCB0byB0b3VjaCByZWd1bGF0b3IuCj4+Cj4+IE9uZSBleGFtcGxlIGlzIE5WSURJQSBUZWdyYTMw LzExNCBTb0NzIHdoaWNoIGhhdmUgdHdvIHNpYmxpbmcgM0QgaGFyZHdhcmUKPj4gdW5pdHMgd2hp Y2ggc2hvdWxkIGJlIHVzZSB0byB0aGUgc2FtZSBjbG9jayByYXRlLCBtZWFud2hpbGUgdm9sdGFn ZQo+PiBzY2FsaW5nIGlzIGRvbmUgdXNpbmcgYSBwb3dlciBkb21haW4uIEluIHRoaXMgY2FzZSBP UFAgdGFibGUgZG9lc24ndCBoYXZlCj4+IGEgcmVndWxhdG9yLCBjYXVzaW5nIGEgTlVMTCBkZXJl ZmVyZW5jZSBpbiBfc2V0X29wcF9jdXN0b20oKS4KPj4KPj4gU2lnbmVkLW9mZi1ieTogRG1pdHJ5 IE9zaXBlbmtvIDxkaWdldHhAZ21haWwuY29tPgo+PiAtLS0KPj4gIGRyaXZlcnMvb3BwL2NvcmUu YyB8IDE2ICsrKysrKysrKysrKy0tLS0KPj4gIDEgZmlsZSBjaGFuZ2VkLCAxMiBpbnNlcnRpb25z KCspLCA0IGRlbGV0aW9ucygtKQo+Pgo+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9vcHAvY29yZS5j IGIvZHJpdmVycy9vcHAvY29yZS5jCj4+IGluZGV4IDNkMDJmZTMzNjMwYi4uNjI1ZGFlN2E1ZWNi IDEwMDY0NAo+PiAtLS0gYS9kcml2ZXJzL29wcC9jb3JlLmMKPj4gKysrIGIvZHJpdmVycy9vcHAv Y29yZS5jCj4+IEBAIC04MjgsMTcgKzgyOCwyNSBAQCBzdGF0aWMgaW50IF9zZXRfb3BwX2N1c3Rv bShjb25zdCBzdHJ1Y3Qgb3BwX3RhYmxlICpvcHBfdGFibGUsCj4+ICAJCQkgICBzdHJ1Y3QgZGV2 X3BtX29wcF9zdXBwbHkgKm9sZF9zdXBwbHksCj4+ICAJCQkgICBzdHJ1Y3QgZGV2X3BtX29wcF9z dXBwbHkgKm5ld19zdXBwbHkpCj4+ICB7Cj4+IC0Jc3RydWN0IGRldl9wbV9zZXRfb3BwX2RhdGEg KmRhdGE7Cj4+ICsJc3RydWN0IGRldl9wbV9zZXRfb3BwX2RhdGEgKmRhdGEsIHRtcF9kYXRhOwo+ PiArCXVuc2lnbmVkIGludCByZWd1bGF0b3JfY291bnQ7Cj4+ICAJaW50IHNpemU7Cj4+ICAKPj4g LQlkYXRhID0gb3BwX3RhYmxlLT5zZXRfb3BwX2RhdGE7Cj4+ICsJaWYgKG9wcF90YWJsZS0+c2V0 X29wcF9kYXRhKSB7Cj4+ICsJCWRhdGEgPSBvcHBfdGFibGUtPnNldF9vcHBfZGF0YTsKPj4gKwkJ cmVndWxhdG9yX2NvdW50ID0gb3BwX3RhYmxlLT5yZWd1bGF0b3JfY291bnQ7Cj4+ICsJfSBlbHNl IHsKPj4gKwkJZGF0YSA9ICZ0bXBfZGF0YTsKPj4gKwkJcmVndWxhdG9yX2NvdW50ID0gMDsKPj4g Kwl9Cj4+ICsKPiAKPiBXZSBzaG91bGQgdXNlIHRoZSBzYW1lIHN0cnVjdHVyZSwgeW91IGNhbiBh ZGQgc29tZSBjaGVja3MgYnV0IG5vdCByZXBsYWNlIHRoZQo+IHN0cnVjdHVyZSBhbHRvZ2V0aGVy LgoKV2VsbCwgdGhlcmUgaXMgbm8gInNhbWUgc3RydWN0dXJlIiwgdGhlIG9wcF90YWJsZS0+c2V0 X29wcF9kYXRhIGlzIE5VTEwKdGhlcmUuCgpJIGNhbiByZS13cml0ZSBpdCBsaWtlIHRoaXMgaWYg aXQgbG9va3MgYmV0dGVyIHRvIHlvdToKCnN0YXRpYyBpbnQgX3NldF9vcHBfY3VzdG9tKC4uLikK ewoJc3RydWN0IGRldl9wbV9zZXRfb3BwX2RhdGEgKmRhdGE7Cgl1bnNpZ25lZCBpbnQgcmVndWxh dG9yX2NvdW50OwoJaW50IHNpemU7CgorCWlmICghb3BwX3RhYmxlLT5zZXRfb3BwX2RhdGEpIHsK KwkJc3RydWN0IGRldl9wbV9zZXRfb3BwX2RhdGEgZnJlcV9kYXRhID0ge307CisKKwkJZnJlcV9k YXRhLmRldiA9IGRldjsKKwkJZnJlcV9kYXRhLmNsayA9IG9wcF90YWJsZS0+Y2xrOworCQlmcmVx X2RhdGEubmV3X29wcC5yYXRlID0gZnJlcTsKKwkJZnJlcV9kYXRhLm9sZF9vcHAucmF0ZSA9IG9s ZF9mcmVxOworCisJCXJldHVybiBvcHBfdGFibGUtPnNldF9vcHAoJmZyZXFfZGF0YSk7CisJfQpf X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmktZGV2ZWwg bWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK