From patchwork Fri May 4 13:51:47 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Rosin X-Patchwork-Id: 10382433 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 A011C60318 for ; Sat, 5 May 2018 20:17:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 90A3528FE1 for ; Sat, 5 May 2018 20:17:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8508E2900A; Sat, 5 May 2018 20:17:22 +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=-5.1 required=2.0 tests=BAD_ENC_HEADER,BAYES_00, DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED, T_DKIM_INVALID 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 E9D7328FE1 for ; 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Fri, 4 May 2018 13:52:35 +0000 From: Peter Rosin To: linux-kernel@vger.kernel.org Subject: [PATCH v2 01/26] drm/bridge: allow optionally specifying an owner .odev device Date: Fri, 4 May 2018 15:51:47 +0200 Message-Id: <20180504135212.26977-2-peda@axentia.se> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180504135212.26977-1-peda@axentia.se> References: <20180504135212.26977-1-peda@axentia.se> MIME-Version: 1.0 X-Originating-IP: [85.226.244.23] X-ClientProxiedBy: DB6PR0202CA0039.eurprd02.prod.outlook.com (2603:10a6:4:a5::25) To AM4PR0202MB2769.eurprd02.prod.outlook.com (2603:10a6:200:8c::19) X-MS-PublicTrafficType: Email X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(7020095)(4652020)(7021125)(5600026)(4534165)(7022125)(4603075)(4627221)(201702281549075)(7048125)(7024125)(7027125)(7028125)(7023125)(2017052603328)(7153060)(7193020); SRVR:AM4PR0202MB2769; X-Microsoft-Exchange-Diagnostics: 1; AM4PR0202MB2769; 3:H+5QNHtChiE3Syr/VsQsJ7T+wwyuJ5QohlsXYY+QZV+xBTbFHYNRtqW7AtcXWCc4pd+UXOmBTq+DZBhWv0z7jXOG96fWerrZxuEMFL8EZi7ulu+rk59C2fJ+IsJzDYNgTTDZRhFn3CU8j3g+Ae4reFs4vv5QKtPNqPlEOt6YlPPnYF/ls2BNng2O5DdVtPiZxMH65GSwvueWlP4skr8wHrAlVkbTxhPnsXf+9E5yVOYZoao0RsyAAWC0KHGqoUIx; 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By providing a full owner device, the bridge drivers no longer need to provide an of_node since that node is available via the owner device. When all bridge drivers provide an owner device, that will become mandatory and the .of_node member will be removed. Signed-off-by: Peter Rosin Reviewed-by: Andrzej Hajda --- drivers/gpu/drm/drm_bridge.c | 3 ++- drivers/gpu/drm/rockchip/rockchip_lvds.c | 4 +++- include/drm/drm_bridge.h | 2 ++ 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 1638bfe9627c..3872f5379998 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -365,7 +365,8 @@ struct drm_bridge *of_drm_find_bridge(struct device_node *np) mutex_lock(&bridge_lock); list_for_each_entry(bridge, &bridge_list, list) { - if (bridge->of_node == np) { + if ((bridge->odev && bridge->odev->of_node == np) || + bridge->of_node == np) { mutex_unlock(&bridge_lock); return bridge; } diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c index 4bd94b167d2c..557e0079c98d 100644 --- a/drivers/gpu/drm/rockchip/rockchip_lvds.c +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c @@ -377,8 +377,10 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master, } if (lvds->panel) remote = lvds->panel->dev->of_node; - else + else if (lvds->bridge->of_node) remote = lvds->bridge->of_node; + else + remote = lvds->bridge->odev->of_node; if (of_property_read_string(dev->of_node, "rockchip,output", &name)) /* default set it as output rgb */ lvds->output = DISPLAY_OUTPUT_RGB; diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 3270fec46979..7c17977c3537 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -254,6 +254,7 @@ struct drm_bridge_timings { /** * struct drm_bridge - central DRM bridge control structure + * @odev: device that owns the bridge * @dev: DRM device this bridge belongs to * @encoder: encoder to which this bridge is connected * @next: the next bridge in the encoder chain @@ -265,6 +266,7 @@ struct drm_bridge_timings { * @driver_private: pointer to the bridge driver's internal context */ struct drm_bridge { + struct device *odev; struct drm_device *dev; struct drm_encoder *encoder; struct drm_bridge *next;