From nobody Wed Feb 5 17:03:18 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3D7831DED40 for ; Wed, 15 Jan 2025 21:06:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736975205; cv=none; b=pp8vw5Mj/StkZnyQsoi/GNXgICT8eKDmopbuJYkV/hPMz1qSij8CtNPes/+nMxRIr2nAv+kuxw2ceeE0bYvgYZ/XBi5b8lO8cQJHo753tbVGwobd7gVFF39d/MlwAH519t4cThonBYwb4pKjlTesDZhUqZfp6WP2KLtLj8czK4Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736975205; c=relaxed/simple; bh=9T4ReeimU/AWX2mhfPxcnSlL9IFfjkRULA/cewF8mHQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=gCmd5eD8J9ev276mzM73itBPK8Ryx5ri8fp3k9gPNhRgmuq3w3UvKb4LJyGAGEl77b7eNg0jooyKZYEl8ae5RgJx2JG2RxdU2KjKolOTWzTNz7Ob+zSnkhPGfaWuDc0acSc3Xp/4kwN445hXm3twxgob8BK31SCd+PPJR2lGlk8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GIGfyyuF; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GIGfyyuF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 75023C4CED1; Wed, 15 Jan 2025 21:06:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1736975204; bh=9T4ReeimU/AWX2mhfPxcnSlL9IFfjkRULA/cewF8mHQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=GIGfyyuF+0E+BM33vaISLl+XVtOHjDezKxt5Hfbff+4WRS9uEi4VK/hjxK8fe0WBU jIS3TitzqGof5+zg/olNLxeChpg1sKQznxdH6ISHoywmF6nJ1kbuxp+BpA7iPBxI67 BtVFXO+QU/gG6u3eGIMEw5feCvA8SrCFabEKy/gD/bL5vk/7jMwJGmGC9X3AA23GUA pyKP4NN+UQ7mzWo/41uw+wb0fy2zmj9xpe+tSsm5DK4DZkSKbx3f2JYsZ9slvIAvTg Ir1EtvboOP8XLD4coKo9Cw2G7ZEIkS3nPa4Ltak4Yi8xClONIJC9+O6ni1Law1ZBop EDwGgmxyZQGgA== From: Maxime Ripard Date: Wed, 15 Jan 2025 22:05:30 +0100 Subject: [PATCH 23/29] drm/bridge: Provide a helper to retrieve current bridge state Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250115-bridge-connector-v1-23-9a2fecd886a6@kernel.org> References: <20250115-bridge-connector-v1-0-9a2fecd886a6@kernel.org> In-Reply-To: <20250115-bridge-connector-v1-0-9a2fecd886a6@kernel.org> To: Maarten Lankhorst , Thomas Zimmermann , David Airlie , Simona Vetter , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Douglas Anderson Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Maxime Ripard X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1204; i=mripard@kernel.org; h=from:subject:message-id; bh=9T4ReeimU/AWX2mhfPxcnSlL9IFfjkRULA/cewF8mHQ=; b=owGbwMvMwCmsHn9OcpHtvjLG02pJDOkdyvJz54n9/qZ0dem20yGtusa2pqqvTD9OefyaxSD0y Oe7Tz4wdExlYRDmZJAVU2R5IhN2enn74ioH+5U/YOawMoEMYeDiFICJ/A5ibDjOIOb3p7WmJ3Wm nOp7kdCOf0eFQyYzab9YUxzBJKTQ2ex80DFT0OpEvmSJ7ZPCCt4/jDX8XI2xVm7G5Xy67xILtv6 T1jnLNn9r/5Tm1Mais0xT7z+5fiH6x7JXNT1vbtjvS5js/BQA X-Developer-Key: i=mripard@kernel.org; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D The current bridge state is accessible from the drm_bridge structure, but since it's fairly indirect it's not easy to figure out. Provide a helper to retrieve it. Signed-off-by: Maxime Ripard --- include/drm/drm_bridge.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 8e18130be8bb85fc2463917dde9bf1d281934184..95c5037a6335e4c1be511e6c313= 08202015c7754 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -955,10 +955,27 @@ static inline struct drm_bridge *of_drm_find_bridge(s= truct device_node *np) { return NULL; } #endif =20 +/** + * @drm_bridge_get_current_state() - Get the current bridge state + * @bridge: bridge object + * + * RETURNS: + * + * The current bridge state, or NULL if there is none. + */ +static inline struct drm_bridge_state * +drm_bridge_get_current_state(struct drm_bridge *bridge) +{ + if (!bridge) + return NULL; + + return drm_priv_to_bridge_state(bridge->base.state); +} + /** * drm_bridge_get_next_bridge() - Get the next bridge in the chain * @bridge: bridge object * * RETURNS: --=20 2.47.1