From patchwork Mon Jun 15 12:02:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajendra Nayak X-Patchwork-Id: 11604617 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A08A414E3 for ; Mon, 15 Jun 2020 12:03:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 88F8720714 for ; Mon, 15 Jun 2020 12:03:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="s0zqbOQD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729691AbgFOMDf (ORCPT ); Mon, 15 Jun 2020 08:03:35 -0400 Received: from mail27.static.mailgun.info ([104.130.122.27]:41357 "EHLO mail27.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729734AbgFOMDd (ORCPT ); Mon, 15 Jun 2020 08:03:33 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1592222612; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=Ja7P+CGGeWgD0X9kD8Gyyp0YvmoG5J4vqzYFmgNyLEk=; b=s0zqbOQDRdbLbIAtpL9xTp3Ph1KNR8+rw01dk9KXx8lLaYoD3DcdVBMU+FnGZV51vX4bop5s GxsqazPV00tsPmn2C4hQMMFzLJYvlVyGsVtrNFx3CwvDj/Pl3kSl0navmOX6KnyhEHOkPE8P X538Wnlv1Vu1oWlw/8QfddF4TSc= X-Mailgun-Sending-Ip: 104.130.122.27 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n12.prod.us-east-1.postgun.com with SMTP id 5ee76386c76a4e7a2a060e25 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 15 Jun 2020 12:03:18 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 5FBE8C43391; Mon, 15 Jun 2020 12:03:17 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from blr-ubuntu-173.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rnayak) by smtp.codeaurora.org (Postfix) with ESMTPSA id 61850C433CB; Mon, 15 Jun 2020 12:03:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 61850C433CB Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=rnayak@codeaurora.org From: Rajendra Nayak To: bjorn.andersson@linaro.org, agross@kernel.org, robdclark@gmail.com, robdclark@chromium.org, stanimir.varbanov@linaro.org Cc: viresh.kumar@linaro.org, sboyd@kernel.org, mka@chromium.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Rajendra Nayak , Alok Chauhan , Akash Asthana , linux-spi@vger.kernel.org Subject: [PATCH v6 2/6] spi: spi-geni-qcom: Use OPP API to set clk/perf state Date: Mon, 15 Jun 2020 17:32:40 +0530 Message-Id: <1592222564-13556-3-git-send-email-rnayak@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592222564-13556-1-git-send-email-rnayak@codeaurora.org> References: <1592222564-13556-1-git-send-email-rnayak@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org geni spi needs to express a perforamnce state requirement on CX depending on the frequency of the clock rates. Use OPP table from DT to register with OPP framework and use dev_pm_opp_set_rate() to set the clk/perf state. Signed-off-by: Rajendra Nayak Reviewed-by: Matthias Kaehlcke Acked-by: Mark Brown Cc: Alok Chauhan Cc: Akash Asthana Cc: linux-spi@vger.kernel.org --- This patch needs to land via the msm tree. Mark has acked v5, so this is good to land I think. v6 is just rebased on 5.8-rc1. drivers/spi/spi-geni-qcom.c | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c index c397242..0d7ead1 100644 --- a/drivers/spi/spi-geni-qcom.c +++ b/drivers/spi/spi-geni-qcom.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include #include @@ -95,7 +96,6 @@ static int get_spi_clk_cfg(unsigned int speed_hz, { unsigned long sclk_freq; unsigned int actual_hz; - struct geni_se *se = &mas->se; int ret; ret = geni_se_clk_freq_match(&mas->se, @@ -112,9 +112,9 @@ static int get_spi_clk_cfg(unsigned int speed_hz, dev_dbg(mas->dev, "req %u=>%u sclk %lu, idx %d, div %d\n", speed_hz, actual_hz, sclk_freq, *clk_idx, *clk_div); - ret = clk_set_rate(se->clk, sclk_freq); + ret = dev_pm_opp_set_rate(mas->dev, sclk_freq); if (ret) - dev_err(mas->dev, "clk_set_rate failed %d\n", ret); + dev_err(mas->dev, "dev_pm_opp_set_rate failed %d\n", ret); return ret; } @@ -561,6 +561,17 @@ static int spi_geni_probe(struct platform_device *pdev) mas->se.wrapper = dev_get_drvdata(dev->parent); mas->se.base = base; mas->se.clk = clk; + mas->se.opp_table = dev_pm_opp_set_clkname(&pdev->dev, "se"); + if (IS_ERR(mas->se.opp_table)) + return PTR_ERR(mas->se.opp_table); + /* OPP table is optional */ + ret = dev_pm_opp_of_add_table(&pdev->dev); + if (!ret) { + mas->se.has_opp_table = true; + } else if (ret != -ENODEV) { + dev_err(&pdev->dev, "invalid OPP table in device tree\n"); + return ret; + } spi->bus_num = -1; spi->dev.of_node = dev->of_node; @@ -596,6 +607,9 @@ static int spi_geni_probe(struct platform_device *pdev) spi_geni_probe_runtime_disable: pm_runtime_disable(dev); spi_master_put(spi); + if (mas->se.has_opp_table) + dev_pm_opp_of_remove_table(&pdev->dev); + dev_pm_opp_put_clkname(mas->se.opp_table); return ret; } @@ -609,6 +623,9 @@ static int spi_geni_remove(struct platform_device *pdev) free_irq(mas->irq, spi); pm_runtime_disable(&pdev->dev); + if (mas->se.has_opp_table) + dev_pm_opp_of_remove_table(&pdev->dev); + dev_pm_opp_put_clkname(mas->se.opp_table); return 0; } @@ -617,6 +634,9 @@ static int __maybe_unused spi_geni_runtime_suspend(struct device *dev) struct spi_master *spi = dev_get_drvdata(dev); struct spi_geni_master *mas = spi_master_get_devdata(spi); + /* Drop the performance state vote */ + dev_pm_opp_set_rate(dev, 0); + return geni_se_resources_off(&mas->se); }