From patchwork Tue Apr 17 01:56:45 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abhinav Kumar X-Patchwork-Id: 10344143 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 C920060548 for ; Tue, 17 Apr 2018 01:57:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 96A082897C for ; Tue, 17 Apr 2018 01:57:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8B65A28980; Tue, 17 Apr 2018 01:57:01 +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=-5.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,T_DKIM_INVALID 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 48DAA2897C for ; Tue, 17 Apr 2018 01:57:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 929B26E3EB; Tue, 17 Apr 2018 01:56:59 +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 2917D6E3D3; Tue, 17 Apr 2018 01:56:58 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 001E760390; Tue, 17 Apr 2018 01:56:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1523930218; bh=iKj8J9X2nYT9O701m9km92oog50c4GYKAmWOKJSQeBc=; h=From:To:Cc:Subject:Date:From; b=DHQnpaNe4JtDjNp20oTP8w1M6PFr8RdCo+4QEnPpkyYl10hSQugVhfFW2RQm3ilO3 gMaiV9GukuroiFKPc943euDLd2YwshaTZMTtCYBrv0AnKDXBzUfhAWtPHYx5nsEE29 Hq5hSR0CPrtgAlAMvs/hTcjRPqgPaCYk/m7qC0iM= Received: from abhinavk-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: abhinavk@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id B5AD060117; Tue, 17 Apr 2018 01:56:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1523930217; bh=iKj8J9X2nYT9O701m9km92oog50c4GYKAmWOKJSQeBc=; h=From:To:Cc:Subject:Date:From; b=GGwB8HFMsqc9ARi3+BbF1kvRIBO7/P1YeEonvtmB9xAnwUDkYjz8LUsL7P/VhGYpI GrZvHGHQHuJJqip4t5qnq/7tPPpr9HuinzhQGJJ+u6FZqcVZEKSgRD6DGG9FWsnb9E gI1JwtG3+0EMPaorvYklpf9L0yLEIBVEZNsvcaCI= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B5AD060117 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=abhinavk@codeaurora.org From: Abhinav Kumar To: dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Subject: [DPU PATCH v3 1/2] drm/msm/dsi: check video mode engine status before waiting Date: Mon, 16 Apr 2018 18:56:45 -0700 Message-Id: <1523930206-6304-1-git-send-email-abhinavk@codeaurora.org> X-Mailer: git-send-email 1.9.1 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: jeykumar@quicinc.com, Abhinav Kumar , hoegsberg@google.com, chandanu@codeaurora.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Make sure the video mode engine is on before waiting for the video done interrupt. Changes in v2: - Replace pr_err with dev_err - Changed error message Changes in v3: - Move the return value check to another patch Signed-off-by: Abhinav Kumar --- drivers/gpu/drm/msm/dsi/dsi_host.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 7a03a94..8df0d44 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -173,6 +173,7 @@ struct msm_dsi_host { bool registered; bool power_on; + bool enabled; int irq; }; @@ -1001,7 +1002,7 @@ static void dsi_wait4video_eng_busy(struct msm_dsi_host *msm_host) if (!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO)) return; - if (msm_host->power_on) { + if (msm_host->power_on && msm_host->enabled) { dsi_wait4video_done(msm_host); /* delay 4 ms to skip BLLP */ usleep_range(2000, 4000); @@ -2203,7 +2204,7 @@ int msm_dsi_host_enable(struct mipi_dsi_host *host) * pm_runtime_put_autosuspend(&msm_host->pdev->dev); * } */ - + msm_host->enabled = true; return 0; } @@ -2219,7 +2220,7 @@ int msm_dsi_host_disable(struct mipi_dsi_host *host) * Reset to disable video engine so that we can send off cmd. */ dsi_sw_reset(msm_host); - + msm_host->enabled = false; return 0; }