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=-11.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,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 B3DA4C433E6 for ; Tue, 22 Dec 2020 19:22:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7F52023139 for ; Tue, 22 Dec 2020 19:22:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727108AbgLVTVr (ORCPT ); Tue, 22 Dec 2020 14:21:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726620AbgLVTVq (ORCPT ); Tue, 22 Dec 2020 14:21:46 -0500 Received: from mail-lf1-x12d.google.com (mail-lf1-x12d.google.com [IPv6:2a00:1450:4864:20::12d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 12019C0613D3; Tue, 22 Dec 2020 11:21:06 -0800 (PST) Received: by mail-lf1-x12d.google.com with SMTP id y19so34401813lfa.13; Tue, 22 Dec 2020 11:21:05 -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=0YzH8qFTgwShSHXjPQ/ih8sk32BJvJHUfZ62MJdnb4Q=; b=cjuuNVp8wJ4Py/jZcvkjtwd+gc2aYRuxADY9gxQQ1BFMmuGUB+QpXlnKsJc4t6BtCL KnGX5HHkPLoHg8NcbTRi//P/INJ7hF0Mt7Mg696geYuEi3wXX1JvDW6EQE3Sovz8NX+t lFaTGtAHKDD5oXV+3gr2TFkuTLzSI6ZGfCmsppPN3+9iVTJmuVeFHGF8Fe2bKRhm87pv bB6x6iQQhjZqDFLIAdl2dOjsTocH/K/GqNBn2WMEe3LKWzJstYv2DfJBuLBpNrjeZnvJ GVJM4YnrqqstFT9iWTlRzs4LU5FMJbnvxzZWYbtw6Ps7yPs1l9ZSuum5Z9IQvJftfOSJ zYGw== 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=0YzH8qFTgwShSHXjPQ/ih8sk32BJvJHUfZ62MJdnb4Q=; b=al4QxrVSCDc96CuiOTtRudL9r3hTn1HI2s3Z4BAU8PAJ4YoFoHIAyNr7Fe2gfq+sdh UuKX7Z17HkzMAUffSu/zA36Fvqbc9HaUgKJXtevRHADZxrFT79bGMRTtGDbubCjmH8tL qCcmpMQ+9+juRBA/k5m/iOFCPVSfEsw6BeQfnDik3gdFrACbB758ThLnYW6t8L6mcVux 27mkl5c+99wdBKM67ytslwE0KZs6D17ZKfPdNmqMym4ZIboi3c+CcPCWhf6gTCfLAHRZ jZNCMTitbS+5WPUP/R0lMMgoFDLyrkhl2RbxhcQxo0TLaQ7+GOJfYH+rpVqHMTtVt8PS uEVw== X-Gm-Message-State: AOAM530iX0q92ByPlWBtT5PaVvH+hl5xOd7gr/vVqLIFTB/eZ33QDY76 WYeMwlTVCSmZWcYfS6gpldw3fCjY4PA= X-Google-Smtp-Source: ABdhPJyTfRbQjmFtVPw92Y7UsE4CBIej0hVl2LRd1tte7JNX6Oy7N+3jhVtpYSR71T820OH/ZDlnJA== X-Received: by 2002:ac2:5597:: with SMTP id v23mr4071397lfg.649.1608664864385; Tue, 22 Dec 2020 11:21:04 -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 k2sm2771430lfo.256.2020.12.22.11.21.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 22 Dec 2020 11:21:03 -0800 (PST) Subject: Re: [PATCH v2 28/48] soc/tegra: Introduce core power domain driver 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> <20201217180638.22748-29-digetx@gmail.com> <20201222064029.duuzcsj53rt7xzvt@vireshk-i7> From: Dmitry Osipenko Message-ID: Date: Tue, 22 Dec 2020 22:21:03 +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: <20201222064029.duuzcsj53rt7xzvt@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-tegra@vger.kernel.org 22.12.2020 09:40, Viresh Kumar пишет: > On 17-12-20, 21:06, Dmitry Osipenko wrote: >> +++ b/drivers/soc/tegra/core-power-domain.c >> @@ -0,0 +1,125 @@ >> +// SPDX-License-Identifier: GPL-2.0+ >> +/* >> + * NVIDIA Tegra SoC Core Power Domain Driver >> + */ >> + >> +#include >> +#include >> +#include >> +#include >> +#include >> + >> +#include >> + >> +static struct lock_class_key tegra_core_domain_lock_class; >> +static bool tegra_core_domain_state_synced; >> + >> +static int tegra_genpd_set_performance_state(struct generic_pm_domain *genpd, >> + unsigned int level) >> +{ >> + struct dev_pm_opp *opp; >> + int err; >> + >> + opp = dev_pm_opp_find_level_ceil(&genpd->dev, &level); > > We don't need ceil or floor versions for level, but rather _exact() version. Or > maybe just call it dev_pm_opp_find_level(). The _exact() version won't find OPP for level=0 if levels don't start with 0. >> + if (IS_ERR(opp)) { >> + dev_err(&genpd->dev, "failed to find OPP for level %u: %pe\n", >> + level, opp); >> + return PTR_ERR(opp); >> + } >> + >> + err = dev_pm_opp_set_voltage(&genpd->dev, opp); > > IIUC, you implemented this callback because you want to use the voltage triplet > present in the OPP table ? > > And so you are setting the regulator ("power") later in this patch ? yes > I am not in favor of implementing this routine, as it just adds a wrapper above > the regulator API. What you should be doing rather is get the regulator by > yourself here (instead of depending on the OPP core). And then you can do > dev_pm_opp_get_voltage() here and set the voltage yourself. You may want to > implement a version supporting triplet here though for the same. > > And you won't require the sync version of the API as well then. > That's what I initially did for this driver. I don't mind to revert back to the initial variant in v3, it appeared to me that it will be nicer and cleaner to have OPP API managing everything here. 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[109.252.192.57]) by smtp.googlemail.com with ESMTPSA id k2sm2771430lfo.256.2020.12.22.11.21.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 22 Dec 2020 11:21:03 -0800 (PST) Subject: Re: [PATCH v2 28/48] soc/tegra: Introduce core power domain driver To: Viresh Kumar References: <20201217180638.22748-1-digetx@gmail.com> <20201217180638.22748-29-digetx@gmail.com> <20201222064029.duuzcsj53rt7xzvt@vireshk-i7> From: Dmitry Osipenko Message-ID: Date: Tue, 22 Dec 2020 22:21:03 +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: <20201222064029.duuzcsj53rt7xzvt@vireshk-i7> Content-Language: en-US X-BeenThere: driverdev-devel@linuxdriverproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Driver Project Developer List 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. 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[109.252.192.57]) by smtp.googlemail.com with ESMTPSA id k2sm2771430lfo.256.2020.12.22.11.21.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 22 Dec 2020 11:21:03 -0800 (PST) Subject: Re: [PATCH v2 28/48] soc/tegra: Introduce core power domain driver To: Viresh Kumar References: <20201217180638.22748-1-digetx@gmail.com> <20201217180638.22748-29-digetx@gmail.com> <20201222064029.duuzcsj53rt7xzvt@vireshk-i7> From: Dmitry Osipenko Message-ID: Date: Tue, 22 Dec 2020 22:21:03 +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: <20201222064029.duuzcsj53rt7xzvt@vireshk-i7> Content-Language: en-US X-Mailman-Approved-At: Wed, 23 Dec 2020 10:51:31 +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" MjIuMTIuMjAyMCAwOTo0MCwgVmlyZXNoIEt1bWFyINC/0LjRiNC10YI6Cj4gT24gMTctMTItMjAs IDIxOjA2LCBEbWl0cnkgT3NpcGVua28gd3JvdGU6Cj4+ICsrKyBiL2RyaXZlcnMvc29jL3RlZ3Jh L2NvcmUtcG93ZXItZG9tYWluLmMKPj4gQEAgLTAsMCArMSwxMjUgQEAKPj4gKy8vIFNQRFgtTGlj ZW5zZS1JZGVudGlmaWVyOiBHUEwtMi4wKwo+PiArLyoKPj4gKyAqIE5WSURJQSBUZWdyYSBTb0Mg Q29yZSBQb3dlciBEb21haW4gRHJpdmVyCj4+ICsgKi8KPj4gKwo+PiArI2luY2x1ZGUgPGxpbnV4 L29mX2RldmljZS5oPgo+PiArI2luY2x1ZGUgPGxpbnV4L3BsYXRmb3JtX2RldmljZS5oPgo+PiAr I2luY2x1ZGUgPGxpbnV4L3BtX2RvbWFpbi5oPgo+PiArI2luY2x1ZGUgPGxpbnV4L3BtX29wcC5o Pgo+PiArI2luY2x1ZGUgPGxpbnV4L3NsYWIuaD4KPj4gKwo+PiArI2luY2x1ZGUgPHNvYy90ZWdy YS9jb21tb24uaD4KPj4gKwo+PiArc3RhdGljIHN0cnVjdCBsb2NrX2NsYXNzX2tleSB0ZWdyYV9j b3JlX2RvbWFpbl9sb2NrX2NsYXNzOwo+PiArc3RhdGljIGJvb2wgdGVncmFfY29yZV9kb21haW5f c3RhdGVfc3luY2VkOwo+PiArCj4+ICtzdGF0aWMgaW50IHRlZ3JhX2dlbnBkX3NldF9wZXJmb3Jt YW5jZV9zdGF0ZShzdHJ1Y3QgZ2VuZXJpY19wbV9kb21haW4gKmdlbnBkLAo+PiArCQkJCQkgICAg IHVuc2lnbmVkIGludCBsZXZlbCkKPj4gK3sKPj4gKwlzdHJ1Y3QgZGV2X3BtX29wcCAqb3BwOwo+ PiArCWludCBlcnI7Cj4+ICsKPj4gKwlvcHAgPSBkZXZfcG1fb3BwX2ZpbmRfbGV2ZWxfY2VpbCgm Z2VucGQtPmRldiwgJmxldmVsKTsKPiAKPiBXZSBkb24ndCBuZWVkIGNlaWwgb3IgZmxvb3IgdmVy c2lvbnMgZm9yIGxldmVsLCBidXQgcmF0aGVyIF9leGFjdCgpIHZlcnNpb24uIE9yCj4gbWF5YmUg anVzdCBjYWxsIGl0IGRldl9wbV9vcHBfZmluZF9sZXZlbCgpLgoKVGhlIF9leGFjdCgpIHZlcnNp b24gd29uJ3QgZmluZCBPUFAgZm9yIGxldmVsPTAgaWYgbGV2ZWxzIGRvbid0IHN0YXJ0CndpdGgg MC4KCj4+ICsJaWYgKElTX0VSUihvcHApKSB7Cj4+ICsJCWRldl9lcnIoJmdlbnBkLT5kZXYsICJm YWlsZWQgdG8gZmluZCBPUFAgZm9yIGxldmVsICV1OiAlcGVcbiIsCj4+ICsJCQlsZXZlbCwgb3Bw KTsKPj4gKwkJcmV0dXJuIFBUUl9FUlIob3BwKTsKPj4gKwl9Cj4+ICsKPj4gKwllcnIgPSBkZXZf cG1fb3BwX3NldF92b2x0YWdlKCZnZW5wZC0+ZGV2LCBvcHApOwo+IAo+IElJVUMsIHlvdSBpbXBs ZW1lbnRlZCB0aGlzIGNhbGxiYWNrIGJlY2F1c2UgeW91IHdhbnQgdG8gdXNlIHRoZSB2b2x0YWdl IHRyaXBsZXQKPiBwcmVzZW50IGluIHRoZSBPUFAgdGFibGUgPwo+IAo+IEFuZCBzbyB5b3UgYXJl IHNldHRpbmcgdGhlIHJlZ3VsYXRvciAoInBvd2VyIikgbGF0ZXIgaW4gdGhpcyBwYXRjaCA/Cgp5 ZXMKCj4gSSBhbSBub3QgaW4gZmF2b3Igb2YgaW1wbGVtZW50aW5nIHRoaXMgcm91dGluZSwgYXMg aXQganVzdCBhZGRzIGEgd3JhcHBlciBhYm92ZQo+IHRoZSByZWd1bGF0b3IgQVBJLiBXaGF0IHlv dSBzaG91bGQgYmUgZG9pbmcgcmF0aGVyIGlzIGdldCB0aGUgcmVndWxhdG9yIGJ5Cj4geW91cnNl bGYgaGVyZSAoaW5zdGVhZCBvZiBkZXBlbmRpbmcgb24gdGhlIE9QUCBjb3JlKS4gQW5kIHRoZW4g eW91IGNhbiBkbwo+IGRldl9wbV9vcHBfZ2V0X3ZvbHRhZ2UoKSBoZXJlIGFuZCBzZXQgdGhlIHZv bHRhZ2UgeW91cnNlbGYuIFlvdSBtYXkgd2FudCB0bwo+IGltcGxlbWVudCBhIHZlcnNpb24gc3Vw cG9ydGluZyB0cmlwbGV0IGhlcmUgdGhvdWdoIGZvciB0aGUgc2FtZS4KPiAKPiBBbmQgeW91IHdv bid0IHJlcXVpcmUgdGhlIHN5bmMgdmVyc2lvbiBvZiB0aGUgQVBJIGFzIHdlbGwgdGhlbi4KPiAK ClRoYXQncyB3aGF0IEkgaW5pdGlhbGx5IGRpZCBmb3IgdGhpcyBkcml2ZXIuIEkgZG9uJ3QgbWlu ZCB0byByZXZlcnQgYmFjawp0byB0aGUgaW5pdGlhbCB2YXJpYW50IGluIHYzLCBpdCBhcHBlYXJl ZCB0byBtZSB0aGF0IGl0IHdpbGwgYmUgbmljZXIKYW5kIGNsZWFuZXIgdG8gaGF2ZSBPUFAgQVBJ IG1hbmFnaW5nIGV2ZXJ5dGhpbmcgaGVyZS4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMu ZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlz dGluZm8vZHJpLWRldmVsCg==