From patchwork Mon Mar 5 22:22:57 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Enric Balletbo i Serra X-Patchwork-Id: 10260063 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 62A8860134 for ; Mon, 5 Mar 2018 22:24:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 40DBB28943 for ; Mon, 5 Mar 2018 22:24:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3489828CC6; Mon, 5 Mar 2018 22:24:16 +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=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A823828943 for ; Mon, 5 Mar 2018 22:24:15 +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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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=QsWr8CjRfjpZUNR/qoKHJftGUzzVr48e9UctDlTwQ8M=; b=Dyq1BoQYMVwKPS0JFIoQtDDdC9 24BOrtXZipLc5yQfBGZKw9QhngIxovqtU63pcClicMoiqp988Y9dpEy3UPUzcYEs9eFLKcCaFUJJV jV9V4iczDk9rVnLxrRWAYS0QW2LjHpodczW7NjtrhL6jJJXoEPu2W+6wXdxAXDhPaErm5ckBHhXob v59HWYYQNmfVVFHHSNR0OW8fHJbgylx1rWjqm9iR6CPYtPV9zPKdHTsznSGn0vRr3YPzMskb4zw+V D8OMmpsQkViFiXjsi/ymRfjy8IQPC/0B/wZVfkcE0IXcqgOt3y0BWfVcuBzHcH/JPCQY19aAWot3p TPRHKGKw==; 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 1esyWi-00005J-P4; Mon, 05 Mar 2018 22:24:12 +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 1esyWT-0008Gw-AR for linux-rockchip@lists.infradead.org; Mon, 05 Mar 2018 22:24:04 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id B7B5B2783BF From: Enric Balletbo i Serra To: architt@codeaurora.org, inki.dae@samsung.com, thierry.reding@gmail.com, hjc@rock-chips.com, seanpaul@chromium.org, airlied@linux.ie, tfiga@chromium.org, heiko@sntech.de Subject: [PATCH v4 05/38] drm/bridge: analogix_dp: Don't change psr while bridge is disabled Date: Mon, 5 Mar 2018 23:22:57 +0100 Message-Id: <20180305222324.5872-6-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180305222324.5872-1-enric.balletbo@collabora.com> References: <20180305222324.5872-1-enric.balletbo@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180305_142358_176361_C4B04190 X-CRM114-Status: GOOD ( 11.52 ) 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: wzz@rock-chips.com, hl@rock-chips.com, Tomeu Vizoso , dianders@chromium.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Enric Balletbo i Serra , orjan.eide@arm.com, m.szyprowski@samsung.com, hshi@chromium.org MIME-Version: 1.0 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 Signed-off-by: Enric Balletbo i Serra --- 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 e738aa6de1af..ee00d3d920e0 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 */ @@ -871,8 +871,8 @@ 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); } @@ -1117,6 +1117,7 @@ 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 711fff9b6803..e9a1116d2f8e 100644 --- a/include/drm/bridge/analogix_dp.h +++ b/include/drm/bridge/analogix_dp.h @@ -41,7 +41,7 @@ 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);