From patchwork Thu Jan 21 23:33:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 12038683 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 50BA8C433E6 for ; Fri, 22 Jan 2021 08:46:43 +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 0AA1F235F9 for ; Fri, 22 Jan 2021 08:46:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0AA1F235F9 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 AC1246E9C8; Fri, 22 Jan 2021 08:46:01 +0000 (UTC) Received: from mail-lj1-x22e.google.com (mail-lj1-x22e.google.com [IPv6:2a00:1450:4864:20::22e]) by gabe.freedesktop.org (Postfix) with ESMTPS id D4FEC6E979 for ; Thu, 21 Jan 2021 23:33:10 +0000 (UTC) Received: by mail-lj1-x22e.google.com with SMTP id l12so1953171ljc.3 for ; Thu, 21 Jan 2021 15:33:10 -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=nLR41DXLpX01EFGGqYnK9wGC2B/eZfRvF8CSAXF0+wM=; b=uW5eW3TZasEXRCDWT0TKkUuPWqXEULz2GdydhJeniRJoiM1zBePlAtNcnqi376CPhm gWC58dX5F0i+Vs0WgL2uoQFc416FPZKpX3cvmoq6j0O+biInsJYOfjCT9N6WVrJnjxoS 6onjhcbX0HZDdS3PsjiC1cUvSpoY5zyYIkt3QBYC6TrTTD5NwcfHJ+25qD7BBE6dtbED 1HYkhlHQiXPL1LaC1ZLBga9KzL7UO72SHgcynsqU/ZPyoyujvV9nFSQWz9uEQ6J2BIEX Cv10xXwNRVrXMetW0r8CtvnQDLWUe38sfIxvwxTLGep7Bk8WXnzxIs0K2xMIeLgXpA0+ ldwA== 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=nLR41DXLpX01EFGGqYnK9wGC2B/eZfRvF8CSAXF0+wM=; b=SAnddGwuShMsIr8UjP5Zi7mkV4JyNGsNJSaLxFWcmR26tJqFQNN5qSkXq5ICyirMRZ J2RIhluB4Pj8hsdZAEncxAz02x3bdIWlsYLahTM+vBH9GOZxLnVhu3FngbHGTa0oYlBT JBxvqDJHgtgvcABAfyxlAd/7toXKQoKTuywUNq11HRwX03VLgZPw9j03z6EET5dpL9j2 S1sJKZB098qyYwRU/ZVgBGWD7K5OluHJIbfUCT5xsbRxkoY6fvDj1JoxM4uvACezgxuw r9ckKxCTeQULMTlnK7qftWSyK2gbYaLJw2TB1d6/a21g1+oaUZpUR8kRsGou4QuEm7Sq XuoA== X-Gm-Message-State: AOAM531VFbDMivOWcbDGD/4su/tbWspUGtRw7ivoC5SDPbF05Wqcb08t Yyu87JvJEmaTcWJ3Z2Sd1NTtv4DRxS5Esycb X-Google-Smtp-Source: ABdhPJyTWeBrunTtFpZ8ytV0REk/xDX7IQe2MnkWbZ1xNoNwfR8h06feNxw//96kKZqiswmlj/GD/w== X-Received: by 2002:a2e:b4d1:: with SMTP id r17mr871501ljm.466.1611271988840; Thu, 21 Jan 2021 15:33:08 -0800 (PST) Received: from eriador.lan ([188.162.64.145]) by smtp.gmail.com with ESMTPSA id l28sm726969ljb.42.2021.01.21.15.33.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Jan 2021 15:33:08 -0800 (PST) From: Dmitry Baryshkov To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v4 1/3] drm/bridge/lontium-lt9611uxc: fix waiting for EDID to become available Date: Fri, 22 Jan 2021 02:33:01 +0300 Message-Id: <20210121233303.1221784-2-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210121233303.1221784-1-dmitry.baryshkov@linaro.org> References: <20210121233303.1221784-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 X-Mailman-Approved-At: Fri, 22 Jan 2021 08:45:43 +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 , Bjorn Andersson , 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") Reviewed-by: Bjorn Andersson Reviewed-by: Andrzej Hajda --- 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)