From patchwork Tue Mar 2 16:23:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Verkuil X-Patchwork-Id: 392447 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B1F8C43381 for ; Wed, 3 Mar 2021 01:01:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2923864FA6 for ; Wed, 3 Mar 2021 01:01:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236288AbhCCAnf (ORCPT ); Tue, 2 Mar 2021 19:43:35 -0500 Received: from lb1-smtp-cloud7.xs4all.net ([194.109.24.24]:57131 "EHLO lb1-smtp-cloud7.xs4all.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1449292AbhCBQ1e (ORCPT ); Tue, 2 Mar 2021 11:27:34 -0500 Received: from cust-b5b5937f ([IPv6:fc0c:c16d:66b8:757f:c639:739b:9d66:799d]) by smtp-cloud7.xs4all.net with ESMTPA id H7oZlNjwSOruFH7ojlAWNd; Tue, 02 Mar 2021 17:24:13 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xs4all.nl; s=s2; t=1614702253; bh=nigcAZjwRtlVmPsFqbCkWkaOp6C34x3F16TTh+8uIO4=; h=From:To:Subject:Date:Message-Id:MIME-Version:From:Subject; b=k2tC4ZzjYuZ3M0eQX93PHBSoxyT/nxCbsPt213yTueDgHbJJCACgu0wvuao64Ayvk u3rp2CmLK/aL34CjXSQr1LwIt3kHhNcDKlyKo8heo99ubVi2j6MGY7bapkNy4ls/TL lna9h6FUptmQuEIllQc9SqW28dTEwIBg5J7TAFOwlTbUX9ji5jIkdSXFqJhTLq/Yf3 cHItGrfnA2j5BXljNFQ362DQQEEIoOMGWD2uKPEAiZms7nuCZVWJxvxlw/sR7o/9j7 F4n0TdblLm+1ACEOn17TDSQF5oMdzOXBnZTKQ/4Bv9OfMN8l1LRGZRevUuGFPxdRp8 xzLCQ2iOAF35w== From: Hans Verkuil To: linux-media@vger.kernel.org Cc: Tomi Valkeinen , Tony Lindgren , Sekhar Nori , dri-devel@lists.freedesktop.org, Laurent Pinchart , linux-omap@vger.kernel.org, devicetree@vger.kernel.org, Hans Verkuil Subject: [PATCHv2 1/6] drm: drm_bridge: add connector_attach/detach bridge ops Date: Tue, 2 Mar 2021 17:23:58 +0100 Message-Id: <20210302162403.983585-2-hverkuil-cisco@xs4all.nl> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210302162403.983585-1-hverkuil-cisco@xs4all.nl> References: <20210302162403.983585-1-hverkuil-cisco@xs4all.nl> MIME-Version: 1.0 X-CMAE-Envelope: MS4xfH1WztQd5puTGwx9jr7Qnb4a6LSVKsuJG9LXZaF/19eoi/zr0o+zEmykIrlunj4rGbDj3oLAAcpap3fmA4yi700pShKgsJ36UmKM8zK0vFiMwowA0McA p0X7zcRF1f0Bt+0TiMwZV69oE5p+edWDprPpFmNQSTufy0OnE/pQhC92xNtsLnqWVDfoZxiFtpAEvcC7/+KkUrstDwDV/M1SeLECy7LVFrVhs5vUwU4KnGGZ wNPMe4tXVnFU+jl0wKuYsOHJ7Cuozz3/FIm0BZtB3U74UIwhzitCO3SxTmRI7KJ8IlGcpVvNqtsjY3Gker1BwIfleBPvbm+oBjKwM97ip75SiLhsR/j6wuoy FSuLKjGs6uTuwyNBnpk965gvV2ayGJirHEoBuzo3qRK4kJPO50FFGWqbcWHauP12Of9frF5+Uq6vUeXHjagZry7XZKFS7H5XgG5IlIqkKWNVaiwNc7MO1hyj LVjo6Z5G+y/8Rv+pCmMoSJaVlYfFnG5ksHrCQHLCcaG8Rp/bCtrjct65LZc= Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Add bridge connector_attach/detach ops. These ops are called when a bridge is attached or detached to a drm_connector. These ops can be used to register and unregister an HDMI CEC adapter for a bridge that supports CEC. Signed-off-by: Hans Verkuil --- drivers/gpu/drm/drm_bridge_connector.c | 9 +++++++++ include/drm/drm_bridge.h | 27 ++++++++++++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/drm_bridge_connector.c index 791379816837..07db71d4f5b3 100644 --- a/drivers/gpu/drm/drm_bridge_connector.c +++ b/drivers/gpu/drm/drm_bridge_connector.c @@ -203,6 +203,11 @@ static void drm_bridge_connector_destroy(struct drm_connector *connector) { struct drm_bridge_connector *bridge_connector = to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + drm_for_each_bridge_in_chain(bridge_connector->encoder, bridge) + if (bridge->funcs->connector_detach) + bridge->funcs->connector_detach(bridge, connector); if (bridge_connector->bridge_hpd) { struct drm_bridge *hpd = bridge_connector->bridge_hpd; @@ -375,6 +380,10 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm, connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT; + drm_for_each_bridge_in_chain(encoder, bridge) + if (bridge->funcs->connector_attach) + bridge->funcs->connector_attach(bridge, connector); + return connector; } EXPORT_SYMBOL_GPL(drm_bridge_connector_init); diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 2195daa289d2..3320a6ebd253 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -629,6 +629,33 @@ struct drm_bridge_funcs { * the DRM_BRIDGE_OP_HPD flag in their &drm_bridge->ops. */ void (*hpd_disable)(struct drm_bridge *bridge); + + /** + * @connector_attach: + * + * This callback is invoked whenever our bridge is being attached to a + * &drm_connector. This is where an HDMI CEC adapter can be registered. + * Note that this callback expects that this op always succeeds. Since + * HDMI CEC support is an optional feature, any failure to register a + * CEC adapter must be ignored since video output will still work + * without CEC. + * + * The @connector_attach callback is optional. + */ + void (*connector_attach)(struct drm_bridge *bridge, + struct drm_connector *conn); + + /** + * @connector_detach: + * + * This callback is invoked whenever our bridge is being detached from a + * &drm_connector. This is where an HDMI CEC adapter can be + * unregistered. + * + * The @connector_detach callback is optional. + */ + void (*connector_detach)(struct drm_bridge *bridge, + struct drm_connector *conn); }; /**