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Message-Id: <20240307-kms-hdmi-connector-state-v8-3-ef6a6f31964b@kernel.org>
Date: Thu, 07 Mar 2024 14:38:30 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>, Jonathan Corbet <corbet@....net>,
Sandy Huang <hjc@...k-chips.com>,
Heiko Stübner <heiko@...ech.de>,
Chen-Yu Tsai <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...il.com>,
Samuel Holland <samuel@...lland.org>
Cc: Hans Verkuil <hverkuil@...all.nl>,
Sebastian Wick <sebastian.wick@...hat.com>,
Ville Syrjälä <ville.syrjala@...ux.intel.com>,
dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org,
linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
linux-sunxi@...ts.linux.dev, Maxime Ripard <mripard@...nel.org>,
Dave Stevenson <dave.stevenson@...pberrypi.com>
Subject: [PATCH v8 03/27] drm/connector: hdmi: Create an HDMI sub-state
The next features we will need to share across drivers will need to
store some parameters for drivers to use, such as the selected output
format.
Let's create a new connector sub-state dedicated to HDMI controllers,
that will eventually store everything we need.
Reviewed-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
Signed-off-by: Maxime Ripard <mripard@...nel.org>
---
drivers/gpu/drm/drm_atomic_state_helper.c | 35 +++++++++++++++++++++++++++++++
include/drm/drm_atomic_state_helper.h | 4 ++++
include/drm/drm_connector.h | 7 +++++++
3 files changed, 46 insertions(+)
diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c
index 519228eb1095..7ad1dffe66d9 100644
--- a/drivers/gpu/drm/drm_atomic_state_helper.c
+++ b/drivers/gpu/drm/drm_atomic_state_helper.c
@@ -569,10 +569,26 @@ void drm_atomic_helper_connector_tv_reset(struct drm_connector *connector)
drm_atomic_helper_connector_tv_margins_reset(connector);
}
EXPORT_SYMBOL(drm_atomic_helper_connector_tv_reset);
+/**
+ * __drm_atomic_helper_connector_hdmi_reset() - Initializes all HDMI @drm_connector_state resources
+ * @connector: DRM connector
+ * @new_state: connector state to reset
+ *
+ * Initializes all HDMI resources from a @drm_connector_state without
+ * actually allocating it. This is useful for HDMI drivers, in
+ * combination with __drm_atomic_helper_connector_reset() or
+ * drm_atomic_helper_connector_reset().
+ */
+void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
+ struct drm_connector_state *new_state)
+{
+}
+EXPORT_SYMBOL(__drm_atomic_helper_connector_hdmi_reset);
+
/**
* drm_atomic_helper_connector_tv_check - Validate an analog TV connector state
* @connector: DRM Connector
* @state: the DRM State object
*
@@ -618,10 +634,29 @@ int drm_atomic_helper_connector_tv_check(struct drm_connector *connector,
return 0;
}
EXPORT_SYMBOL(drm_atomic_helper_connector_tv_check);
+/**
+ * drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state
+ * @connector: DRM Connector
+ * @state: the DRM State object
+ *
+ * Provides a default connector state check handler for HDMI connectors.
+ * Checks that a desired connector update is valid, and updates various
+ * fields of derived state.
+ *
+ * RETURNS:
+ * Zero on success, or an errno code otherwise.
+ */
+int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
+ struct drm_atomic_state *state)
+{
+ return 0;
+}
+EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check);
+
/**
* __drm_atomic_helper_connector_duplicate_state - copy atomic connector state
* @connector: connector object
* @state: atomic connector state
*
diff --git a/include/drm/drm_atomic_state_helper.h b/include/drm/drm_atomic_state_helper.h
index b9740edb2658..d59d2b3aef9a 100644
--- a/include/drm/drm_atomic_state_helper.h
+++ b/include/drm/drm_atomic_state_helper.h
@@ -69,11 +69,15 @@ void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
void __drm_atomic_helper_connector_state_reset(struct drm_connector_state *conn_state,
struct drm_connector *connector);
void __drm_atomic_helper_connector_reset(struct drm_connector *connector,
struct drm_connector_state *conn_state);
void drm_atomic_helper_connector_reset(struct drm_connector *connector);
+void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
+ struct drm_connector_state *new_state);
void drm_atomic_helper_connector_tv_reset(struct drm_connector *connector);
+int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
+ struct drm_atomic_state *state);
int drm_atomic_helper_connector_tv_check(struct drm_connector *connector,
struct drm_atomic_state *state);
void drm_atomic_helper_connector_tv_margins_reset(struct drm_connector *connector);
void
__drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 4491c4c2fb6e..000a2a156619 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1029,10 +1029,17 @@ struct drm_connector_state {
/**
* @hdr_output_metadata:
* DRM blob property for HDR output metadata
*/
struct drm_property_blob *hdr_output_metadata;
+
+ /**
+ * @hdmi: HDMI-related variable and properties. Filled by
+ * @drm_atomic_helper_connector_hdmi_check().
+ */
+ struct {
+ } hdmi;
};
/**
* struct drm_connector_funcs - control connectors on a given device
*
--
2.43.2
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