From patchwork Fri May 25 10:30:44 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sharat Masetty X-Patchwork-Id: 10426985 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 832596032C for ; Fri, 25 May 2018 10:31:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 65C6C2962A for ; Fri, 25 May 2018 10:31:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5A86429644; Fri, 25 May 2018 10:31:03 +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=-5.2 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 229762962A for ; Fri, 25 May 2018 10:31:03 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 254E46E916; Fri, 25 May 2018 10:31:02 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from smtp.codeaurora.org (smtp.codeaurora.org [198.145.29.96]) by gabe.freedesktop.org (Postfix) with ESMTPS id 080D56E90D; Fri, 25 May 2018 10:31:00 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1000) id E685D60881; Fri, 25 May 2018 10:30:59 +0000 (UTC) Received: from smasetty-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: smasetty@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id B8F8A600ED; Fri, 25 May 2018 10:30:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B8F8A600ED From: Sharat Masetty To: freedreno@lists.freedesktop.org Subject: [PATCH 1/3] drm/msm: suspend devfreq on init Date: Fri, 25 May 2018 16:00:44 +0530 Message-Id: <1527244246-10519-2-git-send-email-smasetty@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1527244246-10519-1-git-send-email-smasetty@codeaurora.org> References: <1527244246-10519-1-git-send-email-smasetty@codeaurora.org> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-msm@vger.kernel.org, Sharat Masetty , dri-devel@lists.freedesktop.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Devfreq turns on and starts recommending power level as soon as it is initialized. The GPU is still not powered on by the time the devfreq init happens and this leads to problems on GPU's where register access is needed to get/set power levels. So we start suspended and only restart devfreq when GPU is powered on. Signed-off-by: Sharat Masetty Reviewed-by: Jordan Crouse --- drivers/gpu/drm/msm/msm_gpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 1c09acf..d7586f2 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -104,6 +104,8 @@ static void msm_devfreq_init(struct msm_gpu *gpu) dev_err(&gpu->pdev->dev, "Couldn't initialize GPU devfreq\n"); gpu->devfreq.devfreq = NULL; } + + devfreq_suspend_device(gpu->devfreq.devfreq); } static int enable_pwrrail(struct msm_gpu *gpu)