From patchwork Sun Jan 17 00:23:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 12026751 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 143E1C433E6 for ; Mon, 18 Jan 2021 08:25:59 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C919B22525 for ; Mon, 18 Jan 2021 08:25:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C919B22525 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id ADE1B6E1CD; Mon, 18 Jan 2021 08:25:50 +0000 (UTC) Received: from mail-lj1-x231.google.com (mail-lj1-x231.google.com [IPv6:2a00:1450:4864:20::231]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1B7B989B49 for ; Sun, 17 Jan 2021 00:24:00 +0000 (UTC) Received: by mail-lj1-x231.google.com with SMTP id p13so14497441ljg.2 for ; Sat, 16 Jan 2021 16:24:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=gHRQ0xxynPvZxQkJ0XwkKO8LykVQgvPwVrEG9Eu8CIA=; b=a6xn4dTZ2IFPAX0OuBOTeKJNnVYS33dqQWXOkWew7MdddpflJN/lH4msVuofd7VNE1 uSdDZWYEmIVjE1pkdkEaoUlcRhhVl8QS7YgwMOa3nUL8T0/6LV89dXyV5cbqm+/On3+B QD3gXecTGRMAgFZnedB4sPbuyf3vOJdVTSDsNInZc4y1cM1utPNxb57fY4fq33AbobcZ uGPj5UGNfFfgTTAnM68lTSoVLNz00eqkd4smeVYNzh0CO/86ISInkRr5NcupXimuJOVH unHFEgPdgxJIZHJEbvxYKJVKodGDIrbZ6Ouxnhy4O2dvxAD6+V99V6FD5rOCPjrjzJOS 3Tsg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=gHRQ0xxynPvZxQkJ0XwkKO8LykVQgvPwVrEG9Eu8CIA=; b=LDtqBFt8BkLFCT2itd8rHVMd6PW8sAdTs0nJV4qmOo4itN7aDLLuvZ2yqWPeKcZqKQ KH3IEG7vb72tpJMiHlWfhB/2yk/f71daXgwdjWne++xBttAxh9rCW1QxwM/6gyVQVhBc nWBI5mlZlGklAU+kCRomyp7xYKtToLHI9LHfXlqvYZxivjAXMOJogHkxahZsuP/VGe2I 1AqOdxTrUsaq25xiOXQ6DHmRBOBXpEpcuJqsjtK9dc3joAmJWPuhNbRK3bsbtmiqOlxW 6WtelJfQEHs0WQX7lod3MIop4bf5QfSyt+FSxYHyCwVG1ZGPFOjmrZCfmx7gV+P5+wBj vRJg== X-Gm-Message-State: AOAM531N7kQbPbxTW5V5UTo8Rs4zKYxqJD4GtN15M+xHxK8LBQher0jH UgXhoGxS8N7VYTE5SdDoMcoX7JA3Xp0i3LIl X-Google-Smtp-Source: ABdhPJxRg3eJAQoDyiUkVKBvBiFd2B9eEiPA2IEMEdjLSpsknS2wV9RDFNyeQd9YpoVEE2kPJavj2g== X-Received: by 2002:a2e:9985:: with SMTP id w5mr8241208lji.122.1610843038203; Sat, 16 Jan 2021 16:23:58 -0800 (PST) Received: from eriador.lumag.spb.ru ([94.25.228.101]) by smtp.gmail.com with ESMTPSA id q1sm962468lfu.48.2021.01.16.16.23.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 Jan 2021 16:23:57 -0800 (PST) From: Dmitry Baryshkov To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v3 1/3] drm/bridge/lontium-lt9611uxc: fix waiting for EDID to become available Date: Sun, 17 Jan 2021 03:23:53 +0300 Message-Id: <20210117002355.435860-2-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210117002355.435860-1-dmitry.baryshkov@linaro.org> References: <20210117002355.435860-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 X-Mailman-Approved-At: Mon, 18 Jan 2021 08:25:29 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jernej Skrabec , Jonas Karlman , David Airlie , Neil Armstrong , Andrzej Hajda , Vinod Koul , Laurent Pinchart , Manivannan Sadhasivam , Sam Ravnborg Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" - Call wake_up() when EDID ready event is received to wake wait_event_interruptible_timeout() - Increase waiting timeout, reading EDID can take longer than 100ms, so let's be on a safe side. Signed-off-by: Dmitry Baryshkov Fixes: 0cbbd5b1a012 ("drm: bridge: add support for lontium LT9611UXC bridge") --- drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c index 0c98d27f84ac..a59e811f1705 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c @@ -145,8 +145,10 @@ static irqreturn_t lt9611uxc_irq_thread_handler(int irq, void *dev_id) lt9611uxc_unlock(lt9611uxc); - if (irq_status & BIT(0)) + if (irq_status & BIT(0)) { lt9611uxc->edid_read = !!(hpd_status & BIT(0)); + wake_up_all(<9611uxc->wq); + } if (irq_status & BIT(1)) { if (lt9611uxc->connector.dev) @@ -465,7 +467,7 @@ static enum drm_connector_status lt9611uxc_bridge_detect(struct drm_bridge *brid static int lt9611uxc_wait_for_edid(struct lt9611uxc *lt9611uxc) { return wait_event_interruptible_timeout(lt9611uxc->wq, lt9611uxc->edid_read, - msecs_to_jiffies(100)); + msecs_to_jiffies(500)); } static int lt9611uxc_get_edid_block(void *data, u8 *buf, unsigned int block, size_t len)