From patchwork Thu Oct 29 08:07:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akhil P Oommen X-Patchwork-Id: 310655 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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 60384C55178 for ; Thu, 29 Oct 2020 08:07:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE7EC20790 for ; Thu, 29 Oct 2020 08:07:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="JnLf3FOH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726572AbgJ2IHi (ORCPT ); Thu, 29 Oct 2020 04:07:38 -0400 Received: from z5.mailgun.us ([104.130.96.5]:56583 "EHLO z5.mailgun.us" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726635AbgJ2IHc (ORCPT ); Thu, 29 Oct 2020 04:07:32 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1603958851; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=FmPsHd/lPgc/LuSq+bEof6wEgVqlgEzCxRqYEcQH2Ps=; b=JnLf3FOHXCOZX6R7dafGPx5JSe8+ms0x9497SoD4AM8YLbWWYzlSxZ6wbtDPaB+650c4npgS prttRpv+jf5o+bGhZRFY0TCqiBN+lD2pKbW+oApQZWy+PfjO5vXw67FYdeV1OQAE5BKJTTYH uZ8cxMz28v20lXB0OVvyNFn81fw= X-Mailgun-Sending-Ip: 104.130.96.5 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-n02.prod.us-west-2.postgun.com with SMTP id 5f9a784395539f1aec03b530 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 29 Oct 2020 08:07:31 GMT Sender: akhilpo=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 28FEDC43385; Thu, 29 Oct 2020 08:07:31 +0000 (UTC) Received: from akhilpo-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: akhilpo) by smtp.codeaurora.org (Postfix) with ESMTPSA id 531A0C433F0; Thu, 29 Oct 2020 08:07:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 531A0C433F0 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=fail smtp.mailfrom=akhilpo@codeaurora.org From: Akhil P Oommen To: freedreno@lists.freedesktop.org, devicetree@vger.kernel.org Cc: robh@kernel.org, dri-devel@freedesktop.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, jcrouse@codeaurora.org, mka@chromium.org, robdclark@gmail.com, dianders@chromium.org Subject: [PATCH v4 1/3] drm/msm: Add support for GPU cooling Date: Thu, 29 Oct 2020 13:37:19 +0530 Message-Id: <1603958841-20233-1-git-send-email-akhilpo@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Register GPU as a devfreq cooling device so that it can be passively cooled by the thermal framework. Signed-off-by: Akhil P Oommen Reviewed-by: Matthias Kaehlcke Tested-by: Matthias Kaehlcke Acked-by: Rob Herring --- Changes in v4: 1. Fix gpu cooling map. 2. Add mka's Reviewed-by tag. Changes in v3: 1. Minor fix in binding documentation (RobH) Changes in v2: 1. Update the dt bindings documentation drivers/gpu/drm/msm/msm_gpu.c | 12 ++++++++++++ drivers/gpu/drm/msm/msm_gpu.h | 2 ++ 2 files changed, 14 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 55d1648..9f9db46 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include @@ -107,9 +108,18 @@ static void msm_devfreq_init(struct msm_gpu *gpu) if (IS_ERR(gpu->devfreq.devfreq)) { DRM_DEV_ERROR(&gpu->pdev->dev, "Couldn't initialize GPU devfreq\n"); gpu->devfreq.devfreq = NULL; + return; } devfreq_suspend_device(gpu->devfreq.devfreq); + + gpu->cooling = of_devfreq_cooling_register(gpu->pdev->dev.of_node, + gpu->devfreq.devfreq); + if (IS_ERR(gpu->cooling)) { + DRM_DEV_ERROR(&gpu->pdev->dev, + "Couldn't register GPU cooling device\n"); + gpu->cooling = NULL; + } } static int enable_pwrrail(struct msm_gpu *gpu) @@ -1005,4 +1015,6 @@ void msm_gpu_cleanup(struct msm_gpu *gpu) gpu->aspace->mmu->funcs->detach(gpu->aspace->mmu); msm_gem_address_space_put(gpu->aspace); } + + devfreq_cooling_unregister(gpu->cooling); } diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index 6c9e1fd..9a8f20d 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -147,6 +147,8 @@ struct msm_gpu { struct msm_gpu_state *crashstate; /* True if the hardware supports expanded apriv (a650 and newer) */ bool hw_apriv; + + struct thermal_cooling_device *cooling; }; static inline struct msm_gpu *dev_to_gpu(struct device *dev)