From patchwork Mon May 27 13:57:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 13675308 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0E2BBC25B74 for ; Mon, 27 May 2024 13:58:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0CB8A10E2B3; Mon, 27 May 2024 13:58:15 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="F/X2/b3I"; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8987410E2B3 for ; Mon, 27 May 2024 13:58:12 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 5BD0961884; Mon, 27 May 2024 13:58:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A20CBC2BBFC; Mon, 27 May 2024 13:58:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1716818291; bh=d1VbX/wJwLIo5m0XWKY1JQJGOOMNNk/jkKVB9eskgVE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=F/X2/b3I0d09ZfyOROE2I68AblaU4/8hY3CPvoRy4++u61Kjbs3zkiguvk0Dt6d+H z+ZG619ekx1IXEeMjTPRZHqpt2WC9/lcwf9ImWGF/+ub7IUI9LlYSfHHiDzHdmoioS FMF65iiMUH05FT7IHfzupvFGNt8vBKqv8yiSlIG+APrcljrgsBujhDVy20qZQiFUI0 9keciHbuinECk4ium2/t1Y44NOG4JToZ0liNf6FlDdETVlPNI3benmxg9FVdDF6q8R 7Qtqou+eFBWfXk+XJ7xWNmtgwY+0OxQWt0wv3H04lZbVJchY0WIXltXsxpGEExZGhw gtl7RJKyzZ+mQ== From: Maxime Ripard Date: Mon, 27 May 2024 15:57:50 +0200 Subject: [PATCH v15 01/29] drm/connector: Introduce an HDMI connector initialization function MIME-Version: 1.0 Message-Id: <20240527-kms-hdmi-connector-state-v15-1-c5af16c3aae2@kernel.org> References: <20240527-kms-hdmi-connector-state-v15-0-c5af16c3aae2@kernel.org> In-Reply-To: <20240527-kms-hdmi-connector-state-v15-0-c5af16c3aae2@kernel.org> To: Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Jonathan Corbet , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Andy Yan Cc: Hans Verkuil , Sebastian Wick , =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev, Maxime Ripard , Dave Stevenson , Sui Jingfeng , Dmitry Baryshkov X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3905; i=mripard@kernel.org; h=from:subject:message-id; bh=d1VbX/wJwLIo5m0XWKY1JQJGOOMNNk/jkKVB9eskgVE=; b=owGbwMvMwCmsHn9OcpHtvjLG02pJDGkhExOOLp5YsbQpaL9J4jq/HM/EmSazhXd4mEccDbrwv caB/5NUx1QWBmFOBlkxRZYnMmGnl7cvrnKwX/kDZg4rE8gQBi5OAZjI3C+M9fGrKrs5vSyifkVL TiwWbzPYeXLtkbL9d5eYT1Ps9z2hM//pDstm1fSiqFt1BrO3J21/wlinnxr/PMSa6ciShck7SgM nuR0MeS4erPL66ynVYMWUlqWu68/tMPgtfFVapmK+abNhnioA X-Developer-Key: i=mripard@kernel.org; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" A lot of the various HDMI drivers duplicate some logic that depends on the HDMI spec itself and not really a particular hardware implementation. Output BPC or format selection, infoframe generation are good examples of such areas. This creates a lot of boilerplate, with a lot of variations, which makes it hard for userspace to rely on, and makes it difficult to get it right for drivers. In the next patches, we'll add a lot of infrastructure around the drm_connector and drm_connector_state structures, which will allow to abstract away the duplicated logic. This infrastructure comes with a few requirements though, and thus we need a new initialization function. Hopefully, this will make drivers simpler to handle, and their behaviour more consistent. Reviewed-by: Dave Stevenson Reviewed-by: Sui Jingfeng Reviewed-by: Dmitry Baryshkov Signed-off-by: Maxime Ripard --- drivers/gpu/drm/drm_connector.c | 39 +++++++++++++++++++++++++++++++++++++++ include/drm/drm_connector.h | 5 +++++ 2 files changed, 44 insertions(+) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index b0516505f7ae..d9961cce8245 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -450,10 +450,49 @@ int drmm_connector_init(struct drm_device *dev, return 0; } EXPORT_SYMBOL(drmm_connector_init); +/** + * drmm_connector_hdmi_init - Init a preallocated HDMI connector + * @dev: DRM device + * @connector: A pointer to the HDMI connector to init + * @funcs: callbacks for this connector + * @connector_type: user visible type of the connector + * @ddc: optional pointer to the associated ddc adapter + * + * Initialises a preallocated HDMI connector. Connectors can be + * subclassed as part of driver connector objects. + * + * Cleanup is automatically handled with a call to + * drm_connector_cleanup() in a DRM-managed action. + * + * The connector structure should be allocated with drmm_kzalloc(). + * + * Returns: + * Zero on success, error code on failure. + */ +int drmm_connector_hdmi_init(struct drm_device *dev, + struct drm_connector *connector, + const struct drm_connector_funcs *funcs, + int connector_type, + struct i2c_adapter *ddc) +{ + int ret; + + if (!(connector_type == DRM_MODE_CONNECTOR_HDMIA || + connector_type == DRM_MODE_CONNECTOR_HDMIB)) + return -EINVAL; + + ret = drmm_connector_init(dev, connector, funcs, connector_type, ddc); + if (ret) + return ret; + + return 0; +} +EXPORT_SYMBOL(drmm_connector_hdmi_init); + /** * drm_connector_attach_edid_property - attach edid property. * @connector: the connector * * Some connector types like DRM_MODE_CONNECTOR_VIRTUAL do not get a diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index fe88d7fc6b8f..4491c4c2fb6e 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1902,10 +1902,15 @@ int drm_connector_init_with_ddc(struct drm_device *dev, int drmm_connector_init(struct drm_device *dev, struct drm_connector *connector, const struct drm_connector_funcs *funcs, int connector_type, struct i2c_adapter *ddc); +int drmm_connector_hdmi_init(struct drm_device *dev, + struct drm_connector *connector, + const struct drm_connector_funcs *funcs, + int connector_type, + struct i2c_adapter *ddc); void drm_connector_attach_edid_property(struct drm_connector *connector); int drm_connector_register(struct drm_connector *connector); void drm_connector_unregister(struct drm_connector *connector); int drm_connector_attach_encoder(struct drm_connector *connector, struct drm_encoder *encoder);