From patchwork Wed Mar 20 09:49:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajendra Nayak X-Patchwork-Id: 10861203 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DEBF117E0 for ; Wed, 20 Mar 2019 09:50:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CC6EC29A3B for ; Wed, 20 Mar 2019 09:50:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C07E329A3C; Wed, 20 Mar 2019 09:50:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6AFD229A9D for ; Wed, 20 Mar 2019 09:50:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727651AbfCTJty (ORCPT ); Wed, 20 Mar 2019 05:49:54 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:50578 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727607AbfCTJtx (ORCPT ); Wed, 20 Mar 2019 05:49:53 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 3B5E46119F; Wed, 20 Mar 2019 09:49:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1553075392; bh=3IvBCa8OvZCbpW39LzSPn2awcEdwJySydBlFfwz//Qk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jv60lTTmo/oSTWSH5bqz0wI88JiYRLFrAt3MLTiY+uTFyE2s2qw7nXDvS1OJOIQKs wwm7ElGoh+0uZRMOv40nVqbiRqMkRT0KlG9g5iYf4wQDQ9u5bXRSrmNYuI0QGxNyJ+ 8KgiL17hYd8hMhlN7BAZUErS4qpOjIglJbPkWRMo= 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@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id AC0BF61155; Wed, 20 Mar 2019 09:49:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1553075391; bh=3IvBCa8OvZCbpW39LzSPn2awcEdwJySydBlFfwz//Qk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KMch30hUliwKuV4UflNp832h+jG5WfiZw127EZi/2uDOePetJiwVvkDThSuFZqoS9 Misl5nL1vVBi0LRJ7E7fZqeptUVLvZgOqqWNsJSXJlJJtPC8uZxZRpWZGPjdNvISrJ /NFMkouris2qEKig+CJFuBTsQm1wjhzIy/sP24vA= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org AC0BF61155 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=rnayak@codeaurora.org From: Rajendra Nayak To: linux-kernel@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, linux-serial@vger.kernel.org, linux-spi@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-scsi@vger.kernel.org, swboyd@chromium.org, ulf.hansson@linaro.org, viresh.kumar@linaro.org, dianders@chromium.org, rafael@kernel.org, Rajendra Nayak Subject: [RFC v2 04/11] spi: spi-geni-qcom: Use OPP API to set clk/perf state Date: Wed, 20 Mar 2019 15:19:11 +0530 Message-Id: <20190320094918.20234-5-rnayak@codeaurora.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190320094918.20234-1-rnayak@codeaurora.org> References: <20190320094918.20234-1-rnayak@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 Signed-off-by: Stephen Boyd --- drivers/spi/spi-geni-qcom.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c index 5f0b0d5bfef4..c251e6df1bc0 100644 --- a/drivers/spi/spi-geni-qcom.c +++ b/drivers/spi/spi-geni-qcom.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -96,7 +97,6 @@ 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, @@ -113,9 +113,9 @@ 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; } @@ -560,6 +560,12 @@ static int spi_geni_probe(struct platform_device *pdev) if (!spi) return -ENOMEM; + ret = dev_pm_opp_of_add_table(&pdev->dev); + if (ret < 0) { + dev_err(&pdev->dev, "failed to init OPP table: %d\n", ret); + return ret; + } + platform_set_drvdata(pdev, spi); mas = spi_master_get_devdata(spi); mas->irq = irq; @@ -625,6 +631,8 @@ 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); }