From patchwork Mon Jan 15 17:15:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thierry Escande X-Patchwork-Id: 10166155 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 5CD08600CA for ; Tue, 16 Jan 2018 08:54:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3B946265B9 for ; Tue, 16 Jan 2018 08:54:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2FA6C27F88; Tue, 16 Jan 2018 08:54:10 +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, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C6452265B9 for ; Tue, 16 Jan 2018 08:54:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 027986E1AC; Tue, 16 Jan 2018 08:53:59 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0896C6E145 for ; Mon, 15 Jan 2018 17:16:59 +0000 (UTC) Received: from localhost.localdomain (unknown [IPv6:2a01:e35:8a7e:4790:5118:57f7:752d:6fb0]) (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 4D2C4270B51; Mon, 15 Jan 2018 17:16:57 +0000 (GMT) From: Thierry Escande To: Archit Taneja , Inki Dae , Thierry Reding , Sandy Huang , Sean Paul , David Airlie Subject: [PATCH 09/40] drm/bridge: analogix_dp: Don't change psr while bridge is disabled Date: Mon, 15 Jan 2018 18:15:43 +0100 Message-Id: <20180115171614.14474-10-thierry.escande@collabora.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180115171614.14474-1-thierry.escande@collabora.com> References: <20180115171614.14474-1-thierry.escande@collabora.com> MIME-Version: 1.0 Content-Transfert-Encoding: 8bit X-Mailman-Approved-At: Tue, 16 Jan 2018 08:53:58 +0000 Cc: zain wang , Lin Huang , linux-kernel@vger.kernel.org, Douglas Anderson , dri-devel@lists.freedesktop.org, Tomasz Figa , linux-rockchip@lists.infradead.org, Yakir Yang , =?UTF-8?q?=C3=98rjan=20Eide?= , Mark Yao , Haixia Shi X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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);