From patchwork Thu Mar 7 13:38:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 779030 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 F0A2B12E1EA; Thu, 7 Mar 2024 13:38:58 +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=1709818739; cv=none; b=kYh9TodUFGGPbGVtcMnkS14sxJJDP7AY9wvXE4hi1hSTQPptUyC4g7cjL7K43k7gnFy36VoIqbZqv4EUSsuMpqRDUlJauvfhknPSCGE5I+N3cILD3AMH4aLF5q+h8l/jBzw1T3743lT/ixYhbLJI2T9manhPzQYgW67aPk+DUMU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709818739; c=relaxed/simple; bh=uITNeO8iu5HQmM+XePNnDpEdGi4EM3JrAF8vMV6INqk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=cWkBQCvhJdBAQGSjXEvp02hQy5U44TnDpkf5aRwg0f5hxQB36YW0Q6RMbMDPPytqrVLLY3v0ZNaDkI/XOnQwAo1DD1LKNsHFyTdLOhVM3i2WNVgo17UhPO/7sl4UKrdOZr65au+cGMibkXboV8gjWf3k150gBKZ6Sg2TwDHTCzA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=p0LZQl4v; 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="p0LZQl4v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7D675C43390; Thu, 7 Mar 2024 13:38:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1709818738; bh=uITNeO8iu5HQmM+XePNnDpEdGi4EM3JrAF8vMV6INqk=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=p0LZQl4vQo1L7AtHVWq5j6k+N1/Zfhf3/+cdVg2aSTvDX448azNIs+9l76ZevPE5+ Q+me9GpZSJXI0rOAbHkNUVn9QcREgLMGsLSZv0mY5xLULheaTfHfhM3xUn8hj1bcI0 YLMgS1um+NcMH/fUSkp5L/TeiFlQcVkdPwdlw/EqCiEx84ywijsS/ftWddaXUrMOat GKDQa5/00zPb4iLNs/0X4emF5hhqrwBgwwLhszcpyA8r/Z0deByXt7CTObSR3PNIgP qYUQuF7VM558o1FIwS0bLDax7QhR9B30XT+g27zVY1UJDXmf5lhPQ+jYSHkW9kwern E1oXpdBjjvieA== From: Maxime Ripard Date: Thu, 07 Mar 2024 14:38:28 +0100 Subject: [PATCH v8 01/27] drm/connector: Introduce an HDMI connector initialization function Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240307-kms-hdmi-connector-state-v8-1-ef6a6f31964b@kernel.org> References: <20240307-kms-hdmi-connector-state-v8-0-ef6a6f31964b@kernel.org> In-Reply-To: <20240307-kms-hdmi-connector-state-v8-0-ef6a6f31964b@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 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 X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=3792; i=mripard@kernel.org; h=from:subject:message-id; bh=uITNeO8iu5HQmM+XePNnDpEdGi4EM3JrAF8vMV6INqk=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDKkvD0eL6D20nXCnq6NTm5F5U1xPw2f1+Qnsc4w8c06/z 03y6JncUcrCIMbFICumyBIjbL4k7tSs151sfPNg5rAygQxh4OIUgIk8/cPIsLTA9dZ/7/9Cz/ke Hv6yxWeSD9O1tuzG4k/20u6z1VoXnGFkuJnWvmwKW+vFqTMV8o/Z+HU/7j31hsHndeFVtgcnSuM yGAA= X-Developer-Key: i=mripard@kernel.org; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D 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 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);