From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f49.google.com (mail-lf1-f49.google.com [209.85.167.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 98554168 for ; Thu, 19 Aug 2021 22:37:16 +0000 (UTC) Received: by mail-lf1-f49.google.com with SMTP id g13so16141735lfj.12 for ; Thu, 19 Aug 2021 15:37:16 -0700 (PDT) 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=nAS9qcnivKqgeAIIut8h1WFAVA13oxF52QRobcHq7Xc=; b=a4XV4VjRWxo1kHnGEwcEOxFKRCM6deOw4lOM9Uon818SGJgn0YPFw4DdKti64wBV9H ZocBdzpcFtuEYqk3Wa8+HUMj2ko6agOMxjv09whIIThddMbYROGGAAS4Plcpv1Z18cgY 5sKTsW0BmphWVrS/Tiinzv52JEwYHnlvjz/kC/ONQmk2H2QZrW0O70369IiptcK6UmEd XneH4My93CRKDRkqsBmuCdSoAuWcBI3J8xEuCJKQTSLx7Jnn2Qku3bl3B0b4iwQ7W5+X bMdlKDDR1RyjIOyTN2oZCz5u+iQg+iw/06K9i+IzAB7AjGsFZejlDhk+M4jSdmwerMgk ecRA== 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=nAS9qcnivKqgeAIIut8h1WFAVA13oxF52QRobcHq7Xc=; b=TfCVB6J0ECQyjiebew7L2cROpj9fiFKtGXPUd2Kd6ywpb+m/4DQKllKso1rRa9I6uk ZhSdNOfmtzwyzqv4XfTZSa/D+O6T1grsWNVyrWyk/6BNVWAfoLbQy9GjIWdfsxxylPHm TZy2rtYFeBAjmeZny8CXz/jrYQqaVdV62S9V6IvsyvwWWSCQAp5f+Fg7zOMM8+EnHfLp 5IMbFtaCUeGZbfbTXT9Wx8NQnjQDUCN/V4HSrZ3hqecBnPlW3DChyiIvheob89Z9t70c SUUv6207vhEsfoN8neIWOf0+fSOGbucCZxyJtlr7mBYonMephsB4RxyOjseDYHR7Pgto 5IfQ== X-Gm-Message-State: AOAM53213ir0b0U7o6BS0c2RISnBjC4rGYHaI2B6+/mHmfxGrRh27Z59 VHL9Liu3jRFfKp1nJGU8pkQ= X-Google-Smtp-Source: ABdhPJwuMIWgok5xoSqa52pUigQi/FuENEcCid7QFl2xNGsNEC360zffkjPyNHa+eJldf8U6/MOiRQ== X-Received: by 2002:a05:6512:b8e:: with SMTP id b14mr12930460lfv.449.1629412634809; Thu, 19 Aug 2021 15:37:14 -0700 (PDT) Received: from [192.168.2.145] (46-138-120-72.dynamic.spd-mgts.ru. [46.138.120.72]) by smtp.googlemail.com with ESMTPSA id b19sm437171lff.121.2021.08.19.15.37.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 19 Aug 2021 15:37:14 -0700 (PDT) Subject: Re: [PATCH v8 20/34] mmc: sdhci-tegra: Add runtime PM and OPP support To: Thierry Reding Cc: Jonathan Hunter , Ulf Hansson , Viresh Kumar , Stephen Boyd , Peter De Schrijver , Mikko Perttunen , Peter Chen , Mark Brown , Lee Jones , =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Nishanth Menon , Vignesh Raghavendra , Richard Weinberger , Miquel Raynal , Lucas Stach , Stefan Agner , Adrian Hunter , Mauro Carvalho Chehab , Rob Herring , Michael Turquette , linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-staging@lists.linux.dev, linux-spi@vger.kernel.org, linux-pwm@vger.kernel.org, linux-mtd@lists.infradead.org, linux-mmc@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org References: <20210817012754.8710-1-digetx@gmail.com> <20210817012754.8710-21-digetx@gmail.com> From: Dmitry Osipenko Message-ID: <05b7ff28-4c01-fb56-deeb-595a5797394b@gmail.com> Date: Fri, 20 Aug 2021 01:37:13 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit 19.08.2021 20:03, Thierry Reding пишет: > On Tue, Aug 17, 2021 at 04:27:40AM +0300, Dmitry Osipenko wrote: >> The SDHCI on Tegra belongs to the core power domain and we're going to >> enable GENPD support for the core domain. Now SDHCI must be resumed using >> runtime PM API in order to initialize the SDHCI power state. The SDHCI >> clock rate must be changed using OPP API that will reconfigure the power >> domain performance state in accordance to the rate. Add runtime PM and OPP >> support to the SDHCI driver. >> >> Signed-off-by: Dmitry Osipenko >> --- >> drivers/mmc/host/sdhci-tegra.c | 146 ++++++++++++++++++++++++--------- >> 1 file changed, 105 insertions(+), 41 deletions(-) >> >> diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c >> index 387ce9cdbd7c..a3583359c972 100644 >> --- a/drivers/mmc/host/sdhci-tegra.c >> +++ b/drivers/mmc/host/sdhci-tegra.c >> @@ -15,6 +15,8 @@ >> #include >> #include >> #include >> +#include >> +#include >> #include >> #include >> #include >> @@ -24,6 +26,8 @@ >> #include >> #include >> >> +#include >> + >> #include "sdhci-pltfm.h" >> #include "cqhci.h" >> >> @@ -123,6 +127,12 @@ >> SDHCI_TRNS_BLK_CNT_EN | \ >> SDHCI_TRNS_DMA) >> >> +enum { >> + TEGRA_CLK_BULK_SDHCI, >> + TEGRA_CLK_BULK_TMCLK, >> + TEGRA_CLK_BULK_NUM, >> +}; >> + >> struct sdhci_tegra_soc_data { >> const struct sdhci_pltfm_data *pdata; >> u64 dma_mask; >> @@ -171,6 +181,8 @@ struct sdhci_tegra { >> bool enable_hwcq; >> unsigned long curr_clk_rate; >> u8 tuned_tap_delay; >> + >> + struct clk_bulk_data clocks[TEGRA_CLK_BULK_NUM]; > > This doesn't seem worth it to me. There's a lot of churn in this driver > that's only needed to convert this to the clk_bulk API and it makes the > code a lot more difficult to read, in my opinion. > > It looks like the only benefit that this gives us is that runtime > suspend and resume become a few lines shorter. The driver probe code looks cleaner with that. You should be looking at the final result and not at the patch to see it. 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[46.138.120.72]) by smtp.googlemail.com with ESMTPSA id b19sm437171lff.121.2021.08.19.15.37.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 19 Aug 2021 15:37:14 -0700 (PDT) Subject: Re: [PATCH v8 20/34] mmc: sdhci-tegra: Add runtime PM and OPP support To: Thierry Reding Cc: Jonathan Hunter , Ulf Hansson , Viresh Kumar , Stephen Boyd , Peter De Schrijver , Mikko Perttunen , Peter Chen , Mark Brown , Lee Jones , =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Nishanth Menon , Vignesh Raghavendra , Richard Weinberger , Miquel Raynal , Lucas Stach , Stefan Agner , Adrian Hunter , Mauro Carvalho Chehab , Rob Herring , Michael Turquette , linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-staging@lists.linux.dev, linux-spi@vger.kernel.org, linux-pwm@vger.kernel.org, linux-mtd@lists.infradead.org, linux-mmc@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org References: <20210817012754.8710-1-digetx@gmail.com> <20210817012754.8710-21-digetx@gmail.com> From: Dmitry Osipenko Message-ID: <05b7ff28-4c01-fb56-deeb-595a5797394b@gmail.com> Date: Fri, 20 Aug 2021 01:37:13 +0300 User-Agent: Mozilla/5.0 (X11; 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