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[23.128.96.18]) by mx.google.com with ESMTP id f10si12859381ejc.652.2020.08.18.08.13.37; Tue, 18 Aug 2020 08:14:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=LBPbIGYQ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727849AbgHRPML (ORCPT + 99 others); Tue, 18 Aug 2020 11:12:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726873AbgHRPMJ (ORCPT ); Tue, 18 Aug 2020 11:12:09 -0400 Received: from mail-wr1-x444.google.com (mail-wr1-x444.google.com [IPv6:2a00:1450:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B8CACC061389; Tue, 18 Aug 2020 08:12:08 -0700 (PDT) Received: by mail-wr1-x444.google.com with SMTP id z18so18602674wrm.12; Tue, 18 Aug 2020 08:12:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=K7rzgcMuhB59uSbGxt2+obmcC2a75JDzO+8IEBPn/20=; b=LBPbIGYQrU0mHziA4nNdl4eE3cXtppYEvfLXZxMFHqUJCC3aPFJcpOX4uJ04qMnssG Ag5clvTZ7KaHp05xI+LCkT46W+mumhbi4uMzTEJ0Zgw7EHw2biiG22cGZvWWi8pxSKUn b+v8CHE4M/CZIj/ImziP2Zwe6Qr+5YWvKJ7VWieX7JGRgV9arfMDfkxkIL/t2jBZldOQ 42hgWUG6W+6+Bo9XvCgOGgt9ZRn/D8ze4gVCG8oUASyzK10IQlJx8mGSCfQnykVQkC+J UnF7P+cyJAVXZcDJ/N6ANDnOzFaD1Jc+NLZEKQQKLDOnvlSZiA5g2pYB+cNNfwTlgOBN eWHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=K7rzgcMuhB59uSbGxt2+obmcC2a75JDzO+8IEBPn/20=; b=er6gUCaHCrHfN1PbVsIjxmS/u6juuPVw8YcHXZ1rhQei1qvymrvY0LoBlXPFz/wYo5 qLHeJHbaQBeEVDDKvvqWLvVJVhlvf/tZLTBKWY3grYOqLwI3ZLr8Tbz295tHgmLB31E9 FY01AqHCHepiFb+Yj3y/G8GhmYt6fu15DNr+g8dHCwvrwS1MRt+5H5fJ2Ds5YKQKFK2z qNX48zIo2MkiElVW/2YWiQ/ANYnjBPIIUQ5NU2l0GS1dD5SNN7zIy3ehEc8xCv80wdmJ jQeGB+fZkIECnPs8OkQrqqtTCz5vqX4qCvkLVdXqti0lZ3IMMLLVGFfbDR/6z0fgKYRv HSKg== X-Gm-Message-State: AOAM533V3dug9xAmRBQwqE9AVnkunX+rnXM82IBoDpEVW4kDfYGIaT1l NBqr53N2HhJxfMwWYtkQXRdFCQabFEiX0gkoWoA= X-Received: by 2002:adf:f485:: with SMTP id l5mr19243697wro.147.1597763527343; Tue, 18 Aug 2020 08:12:07 -0700 (PDT) MIME-Version: 1.0 References: <1591009402-681-1-git-send-email-mkrishn@codeaurora.org> In-Reply-To: From: Rob Clark Date: Tue, 18 Aug 2020 08:12:53 -0700 Message-ID: Subject: Re: [v2] drm/msm: add shutdown support for display platform_driver To: Sai Prakash Ranjan Cc: Krishna Manikandan , Emil Velikov , Sean Paul , "Kristian H. Kristensen" , Kalyan Thota , nganji@codeaurora.org, dri-devel , linux-arm-msm , freedreno , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Linux Kernel Mailing List , Matthias Kaehlcke , linux-arm-msm-owner@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 18, 2020 at 3:03 AM Sai Prakash Ranjan wrote: > > Hi, > > On 2020-06-01 16:33, Krishna Manikandan wrote: > > Define shutdown callback for display drm driver, > > so as to disable all the CRTCS when shutdown > > notification is received by the driver. > > > > This change will turn off the timing engine so > > that no display transactions are requested > > while mmu translations are getting disabled > > during reboot sequence. > > > > Signed-off-by: Krishna Manikandan > > > > Changes in v2: > > - Remove NULL check from msm_pdev_shutdown (Stephen Boyd) > > - Change commit text to reflect when this issue > > was uncovered (Sai Prakash Ranjan) > > --- > > drivers/gpu/drm/msm/msm_drv.c | 8 ++++++++ > > 1 file changed, 8 insertions(+) > > > > diff --git a/drivers/gpu/drm/msm/msm_drv.c > > b/drivers/gpu/drm/msm/msm_drv.c > > index e4b750b..94e3963 100644 > > --- a/drivers/gpu/drm/msm/msm_drv.c > > +++ b/drivers/gpu/drm/msm/msm_drv.c > > @@ -1322,6 +1322,13 @@ static int msm_pdev_remove(struct > > platform_device *pdev) > > return 0; > > } > > > > +static void msm_pdev_shutdown(struct platform_device *pdev) > > +{ > > + struct drm_device *drm = platform_get_drvdata(pdev); > > + > > + drm_atomic_helper_shutdown(drm); > > +} > > + > > static const struct of_device_id dt_match[] = { > > { .compatible = "qcom,mdp4", .data = (void *)KMS_MDP4 }, > > { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 }, > > @@ -1334,6 +1341,7 @@ static int msm_pdev_remove(struct platform_device > > *pdev) > > static struct platform_driver msm_platform_driver = { > > .probe = msm_pdev_probe, > > .remove = msm_pdev_remove, > > + .shutdown = msm_pdev_shutdown, > > .driver = { > > .name = "msm", > > .of_match_table = dt_match, > > Any more comments on this patch? sorry, I managed to overlook this earlier.. I've pulled it in to msm-next BR, -R > Thanks, > Sai > > -- > QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a > member > of Code Aurora Forum, hosted by The Linux Foundation