From patchwork Thu Jul 21 13:14:46 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yakir Yang X-Patchwork-Id: 9241681 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 B716C60574 for ; Thu, 21 Jul 2016 13:16:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A8A771FFBD for ; Thu, 21 Jul 2016 13:16:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9BED427EE2; Thu, 21 Jul 2016 13:16:07 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7C76A1FFBD for ; Thu, 21 Jul 2016 13:16:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752797AbcGUNPQ (ORCPT ); Thu, 21 Jul 2016 09:15:16 -0400 Received: from lucky1.263xmail.com ([211.157.147.132]:60230 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752506AbcGUNPK (ORCPT ); Thu, 21 Jul 2016 09:15:10 -0400 Received: from ykk?rock-chips.com (unknown [192.168.167.232]) by lucky1.263xmail.com (Postfix) with SMTP id 8F94E63168; Thu, 21 Jul 2016 21:14:49 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 1 X-MAIL-DELIVERY: 0 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 038A43A3D; Thu, 21 Jul 2016 21:14:46 +0800 (CST) X-RL-SENDER: ykk@rock-chips.com X-FST-TO: yzq@rock-chips.com X-SENDER-IP: 103.29.142.67 X-LOGIN-NAME: ykk@rock-chips.com X-UNIQUE-TAG: <24b99a34d510d8e5b073173c27fbf94a> X-ATTACHMENT-NUM: 0 X-SENDER: ykk@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [103.29.142.67]) by smtp.263.net (Postfix) whith ESMTP id 13979U1JBYO; Thu, 21 Jul 2016 21:14:49 +0800 (CST) From: Yakir Yang To: Mark Yao , Inki Dae , Thierry Reding , Heiko Stuebner Cc: Jingoo Han , Javier Martinez Canillas , =?UTF-8?q?St=C3=A9phane=20Marchesin?= , Sean Paul , Tomasz Figa , dianders@chromium.org, David Airlie , daniel.vetter@ffwll.ch, Krzysztof Kozlowski , emil.l.velikov@gmail.com, Yakir Yang , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-rockchip@lists.infradead.org Subject: [PATCH v1 2/2] drm/bridge: analogix_dp: turn off the panel when eDP need to disable Date: Thu, 21 Jul 2016 21:14:46 +0800 Message-Id: <1469106886-4979-1-git-send-email-ykk@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1469106874-4912-1-git-send-email-ykk@rock-chips.com> References: <1469106874-4912-1-git-send-email-ykk@rock-chips.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some panels (like Sharp LQ123P1JX31) need to be turn off when eDP controller stop to send valid video signal, otherwhise panel would go burn in, and keep flicker and flicker. So it's better to turn off the panel when eDP need to disable, and we need to turn on the panel in connector->detect() callback, so that driver would detect panel status rightly. Signed-off-by: Yakir Yang --- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 32715da..ea059b3 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -961,6 +961,14 @@ analogix_dp_detect(struct drm_connector *connector, bool force) { struct analogix_dp_device *dp = to_dp(connector); + /* + * Panle would prepare for several times here, but don't worry it + * would only enable the hardware at the first prepare time. + */ + if (dp->plat_data->panel) + if (drm_panel_prepare(dp->plat_data->panel)) + DRM_ERROR("failed to setup the panel\n"); + if (analogix_dp_detect_hpd(dp)) return connector_status_disconnected; @@ -1063,7 +1071,8 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge) return; if (dp->plat_data->panel) { - if (drm_panel_disable(dp->plat_data->panel)) { + if (drm_panel_disable(dp->plat_data->panel) || + drm_panel_unprepare(dp->plat_data->panel)) { DRM_ERROR("failed to disable the panel\n"); return; } @@ -1333,13 +1342,6 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev, phy_power_on(dp->phy); - if (dp->plat_data->panel) { - if (drm_panel_prepare(dp->plat_data->panel)) { - DRM_ERROR("failed to setup the panel\n"); - return -EBUSY; - } - } - analogix_dp_init_dp(dp); ret = devm_request_threaded_irq(&pdev->dev, dp->irq,