From patchwork Tue Sep 8 15:22:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 264357 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,DKIMWL_WL_HIGH, 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=ham 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 209DEC43461 for ; Tue, 8 Sep 2020 15:42:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D1CDE247B6 for ; Tue, 8 Sep 2020 15:42:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599579742; bh=igUA3ysCtvbQZlZxzdgP/arDzUKvL7VVNXaZw/amLFA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=E+H2orYRSwqHPm43fKHY6mHzWJA9nhO6EwROn2KquLPkEn6c/uxQr/phMjt6azape oO5824MnSLktguxkTnNWqhcHDGzvua3+rAETu5Xhe6cF7KHJ0eIeydc9d0jKvUT7gu eZ328YvDTYs35ABhCrQ7PSuHYfIf+aLafPx02hr8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730522AbgIHPhg (ORCPT ); Tue, 8 Sep 2020 11:37:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:60620 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730529AbgIHPfu (ORCPT ); Tue, 8 Sep 2020 11:35:50 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D062D2247F; Tue, 8 Sep 2020 15:34:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599579287; bh=igUA3ysCtvbQZlZxzdgP/arDzUKvL7VVNXaZw/amLFA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KmOQBc2wPQqW1yDYIrfCbpPrwcmAHohr5befgvOLNrLC/sFMOBwbejk7W/wo9Ng9Q y5wUbOf5AeJju48O/BDHN2P1hn2NUw9muuFCtk0ci08zCZXWwKDns3FWJFOteHq7Bo p4AGnmRrTbZF+9mVV4UffzSYhUnY6WhYgWKQja8o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Krishna Manikandan , Rob Clark , Sasha Levin Subject: [PATCH 5.8 007/186] drm/msm: add shutdown support for display platform_driver Date: Tue, 8 Sep 2020 17:22:29 +0200 Message-Id: <20200908152242.007988241@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200908152241.646390211@linuxfoundation.org> References: <20200908152241.646390211@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Krishna Manikandan [ Upstream commit 9d5cbf5fe46e350715389d89d0c350d83289a102 ] 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) Signed-off-by: Rob Clark Signed-off-by: Sasha Levin --- 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 f6ce40bf36998..b4d61af7a104e 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -1328,6 +1328,13 @@ 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 }, @@ -1340,6 +1347,7 @@ MODULE_DEVICE_TABLE(of, dt_match); 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,