From patchwork Wed Aug 11 16:30:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuogee Hsieh X-Patchwork-Id: 495223 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 9445CC4338F for ; Wed, 11 Aug 2021 16:32:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7158160FC0 for ; Wed, 11 Aug 2021 16:32:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229845AbhHKQcp (ORCPT ); Wed, 11 Aug 2021 12:32:45 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:27580 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229846AbhHKQcK (ORCPT ); Wed, 11 Aug 2021 12:32:10 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1628699498; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=036UU8dkh4TpFsTl/UxdH3RfJ3XL3xFEOfnwi7bilRg=; b=tKMwXeDqj3ac+yIsdNxQ3NOkw/0uoZ36cjbl+4cQgvPej3sIuj0PaaSG29szogTmVfu7wYxV EqPAgFPhbFHksLVZ3wumKU502xumjaVebwEsB7Hy7f/9yr+eLVHEq3WCptWSrpfnS9Ae4lgQ YYsk0I4htCXPo4O9hfPPtTI8j5I= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n06.prod.us-east-1.postgun.com with SMTP id 6113fb3876c3a9a172198530 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 11 Aug 2021 16:30:48 GMT Sender: khsieh=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id EC92BC43460; Wed, 11 Aug 2021 16:30:47 +0000 (UTC) Received: from khsieh-linux1.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: khsieh) by smtp.codeaurora.org (Postfix) with ESMTPSA id DFB4DC4360C; Wed, 11 Aug 2021 16:30:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org DFB4DC4360C Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=khsieh@codeaurora.org From: Kuogee Hsieh To: robdclark@gmail.com, sean@poorly.run, swboyd@chromium.org Cc: Kuogee Hsieh , abhinavk@codeaurora.org, aravindh@codeaurora.org, airlied@linux.ie, daniel@ffwll.ch, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 4/6] drm/msm/dp: replug event is converted into an unplug followed by an plug events Date: Wed, 11 Aug 2021 09:30:05 -0700 Message-Id: <1628699407-28358-5-git-send-email-khsieh@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1628699407-28358-1-git-send-email-khsieh@codeaurora.org> References: <1628699407-28358-1-git-send-email-khsieh@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Remove special handling of replug interrupt and instead treat replug event as a sequential unplug followed by a plugin event. This is needed to meet the requirements of DP Link Layer CTS test case 4.2.1.3. Changes in V2: -- add fixes statement Changes in V3: -- delete EV_HPD_REPLUG_INT Fixes: f21c8a276c2d ("drm/msm/dp: handle irq_hpd with sink_count = 0 correctly") Signed-off-by: Kuogee Hsieh Reviewed-by: Stephen Boyd --- drivers/gpu/drm/msm/dp/dp_display.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 78c5301..aa96272 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -55,7 +55,6 @@ enum { EV_HPD_INIT_SETUP, EV_HPD_PLUG_INT, EV_IRQ_HPD_INT, - EV_HPD_REPLUG_INT, EV_HPD_UNPLUG_INT, EV_USER_NOTIFICATION, EV_CONNECT_PENDING_TIMEOUT, @@ -1146,9 +1145,6 @@ static int hpd_event_thread(void *data) case EV_IRQ_HPD_INT: dp_irq_hpd_handle(dp_priv, todo->data); break; - case EV_HPD_REPLUG_INT: - /* do nothing */ - break; case EV_USER_NOTIFICATION: dp_display_send_hpd_notification(dp_priv, todo->data); @@ -1192,10 +1188,8 @@ static irqreturn_t dp_display_irq_handler(int irq, void *dev_id) if (hpd_isr_status & 0x0F) { /* hpd related interrupts */ - if (hpd_isr_status & DP_DP_HPD_PLUG_INT_MASK || - hpd_isr_status & DP_DP_HPD_REPLUG_INT_MASK) { + if (hpd_isr_status & DP_DP_HPD_PLUG_INT_MASK) dp_add_event(dp, EV_HPD_PLUG_INT, 0, 0); - } if (hpd_isr_status & DP_DP_IRQ_HPD_INT_MASK) { /* stop sentinel connect pending checking */ @@ -1203,8 +1197,10 @@ static irqreturn_t dp_display_irq_handler(int irq, void *dev_id) dp_add_event(dp, EV_IRQ_HPD_INT, 0, 0); } - if (hpd_isr_status & DP_DP_HPD_REPLUG_INT_MASK) - dp_add_event(dp, EV_HPD_REPLUG_INT, 0, 0); + if (hpd_isr_status & DP_DP_HPD_REPLUG_INT_MASK) { + dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0); + dp_add_event(dp, EV_HPD_PLUG_INT, 0, 3); + } if (hpd_isr_status & DP_DP_HPD_UNPLUG_INT_MASK) dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);