From patchwork Tue Jan 30 20:28:39 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thierry Escande X-Patchwork-Id: 10192571 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 C0A1D6020C for ; Tue, 30 Jan 2018 20:31:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AFCEF26538 for ; Tue, 30 Jan 2018 20:31:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A45F326861; Tue, 30 Jan 2018 20:31:01 +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=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 38AFF26538 for ; Tue, 30 Jan 2018 20:31:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=EiXDJlvuPvgdhTC1mQDweg/EDSD2BedRipefNGNn1tM=; b=OR4jsRVbMm21wi CgyqboAHo0pp8T84tKAAYqUPmqNvVasO61E2CUJigzm5mmQ92mlTv0WDFju8xHfCcgT1R6cJEc5UO R5esjMh3vveWttWueoLGxVlM84btcPyZRZlHuv1DQr1LNmw9/3waDQBR0XF3KfduH8jM1xbayvU3K w7xKWHhoNxdRjVI4Q30aF+4jMoYqPpggAiJHdPH9gPhcLyuY6IrH0gHxDCF29sR1Sc4ULRwG8z9Ds LXemTmrneUW0n5ZeJx6it9ZNprzAlWVvxDVIVZOl/jt8CLoCxigubJl/8CycXY92tMS7IV9QDAh61 4hRO9Bo7XgeLjEaAHbKA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1egcYV-00067l-Lm; Tue, 30 Jan 2018 20:30:59 +0000 Received: from bhuna.collabora.co.uk ([46.235.227.227]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1egcXe-0004cW-Mg for linux-rockchip@lists.infradead.org; Tue, 30 Jan 2018 20:30:13 +0000 Received: from localhost.localdomain (unknown [IPv6:2a01:e35:8a7e:4790:1865:5d14:35de:d167]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tescande) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 34A48273D98; Tue, 30 Jan 2018 20:29:33 +0000 (GMT) From: Thierry Escande To: Archit Taneja , Inki Dae , Thierry Reding , Sandy Huang , Sean Paul , David Airlie , Tomasz Figa , Enric Balletbo i Serra Subject: [PATCH v3 09/43] drm/bridge: analogix_dp: Don't change psr while bridge is disabled Date: Tue, 30 Jan 2018 21:28:39 +0100 Message-Id: <20180130202913.28724-10-thierry.escande@collabora.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180130202913.28724-1-thierry.escande@collabora.com> References: <20180130202913.28724-1-thierry.escande@collabora.com> MIME-Version: 1.0 Content-Transfert-Encoding: 8bit X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Zain Wang , Lin Huang , Douglas Anderson , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Yakir Yang , =?UTF-8?q?=C3=98rjan=20Eide?= , Mark Yao , Haixia Shi Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: zain wang There is a race between AUX CH bring-up and enabling bridge which will cause link training to fail. To avoid hitting it, don't change psr state while enabling the bridge. Cc: Tomeu Vizoso Cc: Sean Paul Signed-off-by: zain wang Signed-off-by: Caesar Wang [seanpaul fixed up the commit message a bit and renamed *_supported to *_enabled] Signed-off-by: Sean Paul Signed-off-by: Thierry Escande --- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 15 ++++++++------- drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 2 +- drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 2 +- include/drm/bridge/analogix_dp.h | 2 +- 4 files changed, 11 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index b52de046f5f1..84141571e960 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -98,18 +98,18 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp) return 0; } -int analogix_dp_psr_supported(struct analogix_dp_device *dp) +int analogix_dp_psr_enabled(struct analogix_dp_device *dp) { - return dp->psr_support; + return dp->psr_enable; } -EXPORT_SYMBOL_GPL(analogix_dp_psr_supported); +EXPORT_SYMBOL_GPL(analogix_dp_psr_enabled); int analogix_dp_enable_psr(struct analogix_dp_device *dp) { struct edp_vsc_psr psr_vsc; - if (!dp->psr_support) + if (!dp->psr_enable) return 0; /* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */ @@ -131,7 +131,7 @@ int analogix_dp_disable_psr(struct analogix_dp_device *dp) struct edp_vsc_psr psr_vsc; int ret; - if (!dp->psr_support) + if (!dp->psr_enable) return 0; /* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */ @@ -875,8 +875,8 @@ static void analogix_dp_commit(struct analogix_dp_device *dp) /* Enable video */ analogix_dp_start_video(dp); - dp->psr_support = analogix_dp_detect_sink_psr(dp); - if (dp->psr_support) + dp->psr_enable = analogix_dp_detect_sink_psr(dp); + if (dp->psr_enable) analogix_dp_enable_sink_psr(dp); } @@ -1118,6 +1118,7 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge) if (ret) DRM_ERROR("failed to setup the panel ret = %d\n", ret); + dp->psr_enable = false; dp->dpms_mode = DRM_MODE_DPMS_OFF; } diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h index b039b28d8fcc..e135a42cb19e 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h @@ -170,7 +170,7 @@ struct analogix_dp_device { int dpms_mode; int hpd_gpio; bool force_hpd; - bool psr_support; + bool psr_enable; struct mutex panel_lock; bool panel_is_modeset; diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c index 36334839a3f8..3e8bf79bea58 100644 --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c @@ -82,7 +82,7 @@ static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled) struct rockchip_dp_device *dp = to_dp(encoder); int ret; - if (!analogix_dp_psr_supported(dp->adp)) + if (!analogix_dp_psr_enabled(dp->adp)) return; DRM_DEV_DEBUG(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit"); diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h index 5518fc75dd6e..c2788483c882 100644 --- a/include/drm/bridge/analogix_dp.h +++ b/include/drm/bridge/analogix_dp.h @@ -40,7 +40,7 @@ struct analogix_dp_plat_data { struct drm_connector *); }; -int analogix_dp_psr_supported(struct analogix_dp_device *dp); +int analogix_dp_psr_enabled(struct analogix_dp_device *dp); int analogix_dp_enable_psr(struct analogix_dp_device *dp); int analogix_dp_disable_psr(struct analogix_dp_device *dp);