From patchwork Wed Dec 23 12:53:13 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yakir Yang X-Patchwork-Id: 7912071 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id D689A9F318 for ; Wed, 23 Dec 2015 12:55:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4AEE6204AE for ; Wed, 23 Dec 2015 12:55:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 74FEF20459 for ; Wed, 23 Dec 2015 12:55:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757020AbbLWMz3 (ORCPT ); Wed, 23 Dec 2015 07:55:29 -0500 Received: from lucky1.263xmail.com ([211.157.147.131]:45231 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757014AbbLWMz1 (ORCPT ); Wed, 23 Dec 2015 07:55:27 -0500 Received: from ykk?rock-chips.com (unknown [192.168.167.229]) by lucky1.263xmail.com (Postfix) with SMTP id CCE8288103; Wed, 23 Dec 2015 20:55:20 +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 F305A44F; Wed, 23 Dec 2015 20:55:16 +0800 (CST) X-RL-SENDER: ykk@rock-chips.com X-FST-TO: inki.dae@samsung.com X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: ykk@rock-chips.com X-UNIQUE-TAG: <5694f9516e8b1601299d84a377e149a3> X-ATTACHMENT-NUM: 0 X-SENDER: ykk@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 32667Q7ESHG; Wed, 23 Dec 2015 20:55:19 +0800 (CST) From: Yakir Yang To: Inki Dae , Mark Yao , Jingoo Han , Heiko Stuebner Cc: Thierry Reding , Krzysztof Kozlowski , Rob Herring , Russell King , emil.l.velikov@gmail.com, Gustavo Padovan , Kishon Vijay Abraham I , javier@osg.samsung.com, Andy Yan , Yakir Yang , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v12 17/18] drm: bridge: analogix/dp: add panel prepare/unprepare in suspend/resume time Date: Wed, 23 Dec 2015 20:53:13 +0800 Message-Id: <1450875193-19674-1-git-send-email-ykk@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1450873538-18304-1-git-send-email-ykk@rock-chips.com> References: <1450873538-18304-1-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-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Turn off the panel power in suspend time would help to reduce power waste. Signed-off-by: Yakir Yang --- Changes in v12: None Changes in v11: None Changes in v10: None Changes in v9: None Changes in v8: None Changes in v7: None Changes in v6: None Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index a86a283..1e98489 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1400,6 +1400,12 @@ int analogix_dp_suspend(struct device *dev) struct analogix_dp_device *dp = dev_get_drvdata(dev); clk_disable_unprepare(dp->clock); + + if (dp->plat_data->panel) { + if (drm_panel_unprepare(dp->plat_data->panel)) + DRM_ERROR("failed to turnoff the panel\n"); + } + return 0; } EXPORT_SYMBOL_GPL(analogix_dp_suspend); @@ -1415,6 +1421,13 @@ int analogix_dp_resume(struct device *dev) return ret; } + if (dp->plat_data->panel) { + if (drm_panel_prepare(dp->plat_data->panel)) { + DRM_ERROR("failed to setup the panel\n"); + return -EBUSY; + } + } + return 0; } EXPORT_SYMBOL_GPL(analogix_dp_resume);