From patchwork Thu Jul 2 11:09:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajendra Nayak X-Patchwork-Id: 11638499 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 2E32813B4 for ; Thu, 2 Jul 2020 11:09:56 +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 0BBC720874 for ; Thu, 2 Jul 2020 11:09:56 +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="kXuOkC8+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0BBC720874 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org 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 9778C6E13C; Thu, 2 Jul 2020 11:09:53 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from m43-7.mailgun.net (m43-7.mailgun.net [69.72.43.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id 56E396E131 for ; Thu, 2 Jul 2020 11:09:52 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1593688192; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=ynoiVC9eHCY4O2EgkI4gN4XF0iVibmNBVQhfT4yn05I=; b=kXuOkC8+i/yweJ1gwpd/Ph8pOgT+5kUZKzusHICR791/o3p4mMDqS2KWu4Swu+T+PSbh9Ako flrWepAEkx0upF35HyUpvsdb0hgSs9USm9v57Utx19a+EAl5yjRzmLjyjauWDmP9ReNac7vq uHcmaXGu3VbnVerL/ExxRly95fE= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyJkOTU5ZSIsICJkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n04.prod.us-east-1.postgun.com with SMTP id 5efdc080a6e154319f81820e (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 02 Jul 2020 11:09:52 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 29051C433C8; Thu, 2 Jul 2020 11:09:51 +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, URIBL_BLOCKED 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 A2AE4C433A0; Thu, 2 Jul 2020 11:09:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org A2AE4C433A0 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: robdclark@gmail.com, sean@poorly.run, agross@kernel.org, bjorn.andersson@linaro.org Subject: [PATCH v2 1/4] drm/msm/dpu: Use OPP API to set clk/perf state Date: Thu, 2 Jul 2020 16:39:08 +0530 Message-Id: <1593688151-22616-2-git-send-email-rnayak@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1593688151-22616-1-git-send-email-rnayak@codeaurora.org> References: <1593688151-22616-1-git-send-email-rnayak@codeaurora.org> 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: devicetree@vger.kernel.org, Rajendra Nayak , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, mka@chromium.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On some qualcomm platforms DPU needs to express a performance state requirement on a power domain depending on 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: Rob Clark Reviewed-by: Matthias Kaehlcke --- drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 3 ++- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 26 +++++++++++++++++++++++++- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 4 ++++ 3 files changed, 31 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c index 7c230f7..b36919d 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include #include @@ -218,7 +219,7 @@ static int _dpu_core_perf_set_core_clk_rate(struct dpu_kms *kms, u64 rate) rate = core_clk->max_rate; core_clk->rate = rate; - return msm_dss_clk_set_rate(core_clk, 1); + return dev_pm_opp_set_rate(&kms->pdev->dev, core_clk->rate); } static u64 _dpu_core_perf_get_core_clk_rate(struct dpu_kms *kms) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index b8615d4..0bc8ec4 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include @@ -1025,11 +1026,23 @@ static int dpu_bind(struct device *dev, struct device *master, void *data) if (!dpu_kms) return -ENOMEM; + dpu_kms->opp_table = dev_pm_opp_set_clkname(dev, "core"); + if (IS_ERR(dpu_kms->opp_table)) + return PTR_ERR(dpu_kms->opp_table); + /* OPP table is optional */ + ret = dev_pm_opp_of_add_table(dev); + if (!ret) { + dpu_kms->has_opp_table = true; + } else if (ret != -ENODEV) { + dev_err(dev, "invalid OPP table in device tree\n"); + return ret; + } + mp = &dpu_kms->mp; ret = msm_dss_parse_clock(pdev, mp); if (ret) { DPU_ERROR("failed to parse clocks, ret=%d\n", ret); - return ret; + goto err; } platform_set_drvdata(pdev, dpu_kms); @@ -1043,6 +1056,11 @@ static int dpu_bind(struct device *dev, struct device *master, void *data) priv->kms = &dpu_kms->base; return ret; +err: + if (dpu_kms->has_opp_table) + dev_pm_opp_of_remove_table(dev); + dev_pm_opp_put_clkname(dpu_kms->opp_table); + return ret; } static void dpu_unbind(struct device *dev, struct device *master, void *data) @@ -1057,6 +1075,10 @@ static void dpu_unbind(struct device *dev, struct device *master, void *data) if (dpu_kms->rpm_enabled) pm_runtime_disable(&pdev->dev); + + if (dpu_kms->has_opp_table) + dev_pm_opp_of_remove_table(dev); + dev_pm_opp_put_clkname(dpu_kms->opp_table); } static const struct component_ops dpu_ops = { @@ -1082,6 +1104,8 @@ static int __maybe_unused dpu_runtime_suspend(struct device *dev) struct dpu_kms *dpu_kms = platform_get_drvdata(pdev); struct dss_module_power *mp = &dpu_kms->mp; + /* Drop the performance state vote */ + dev_pm_opp_set_rate(dev, 0); rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, false); if (rc) DPU_ERROR("clock disable failed rc:%d\n", rc); diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h index a3b122b..7400cd7 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h @@ -128,6 +128,10 @@ struct dpu_kms { struct platform_device *pdev; bool rpm_enabled; + + struct opp_table *opp_table; + bool has_opp_table; + struct dss_module_power mp; /* reference count bandwidth requests, so we know when we can