From patchwork Mon Dec 4 11:01:11 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kieran Bingham X-Patchwork-Id: 10090007 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 72C1E6056E for ; Mon, 4 Dec 2017 11:01:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6FD4E29114 for ; Mon, 4 Dec 2017 11:01:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 64D7929116; Mon, 4 Dec 2017 11:01:18 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1B23A29114 for ; Mon, 4 Dec 2017 11:01:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753715AbdLDLBQ (ORCPT ); Mon, 4 Dec 2017 06:01:16 -0500 Received: from mail.kernel.org ([198.145.29.99]:52584 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753502AbdLDLBP (ORCPT ); Mon, 4 Dec 2017 06:01:15 -0500 Received: from localhost.localdomain (cpc89242-aztw30-2-0-cust488.18-1.cable.virginm.net [86.31.129.233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0950C20C51; Mon, 4 Dec 2017 11:01:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0950C20C51 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: mail.kernel.org; spf=fail smtp.mailfrom=kieran.bingham+renesas@ideasonboard.com From: Kieran Bingham To: laurent.pinchart@ideasonboard.com, Hans Verkuil Cc: linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Kieran Bingham Subject: [PATCH v3] media: vsp1: Prevent suspending and resuming DRM pipelines Date: Mon, 4 Dec 2017 11:01:11 +0000 Message-Id: <1512385271-21573-1-git-send-email-kieran.bingham+renesas@ideasonboard.com> X-Mailer: git-send-email 2.7.4 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When used as part of a display pipeline, the VSP is stopped and restarted explicitly by the DU from its suspend and resume handlers. There is thus no need to stop or restart pipelines in the VSP suspend and resume handlers, and doing so would cause the hardware to be left in a misconfigured state. Ensure that the VSP suspend and resume handlers do not affect DRM-based pipelines. Signed-off-by: Kieran Bingham Reviewed-by: Laurent Pinchart --- v3: - Fixed up with punctuation from Laurent. drivers/media/platform/vsp1/vsp1_drv.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c index 962e4c304076..eed9516e25e1 100644 --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -571,7 +571,13 @@ static int __maybe_unused vsp1_pm_suspend(struct device *dev) { struct vsp1_device *vsp1 = dev_get_drvdata(dev); - vsp1_pipelines_suspend(vsp1); + /* + * When used as part of a display pipeline, the VSP is stopped and + * restarted explicitly by the DU. + */ + if (!vsp1->drm) + vsp1_pipelines_suspend(vsp1); + pm_runtime_force_suspend(vsp1->dev); return 0; @@ -582,7 +588,13 @@ static int __maybe_unused vsp1_pm_resume(struct device *dev) struct vsp1_device *vsp1 = dev_get_drvdata(dev); pm_runtime_force_resume(vsp1->dev); - vsp1_pipelines_resume(vsp1); + + /* + * When used as part of a display pipeline, the VSP is stopped and + * restarted explicitly by the DU. + */ + if (!vsp1->drm) + vsp1_pipelines_resume(vsp1); return 0; }