diff mbox series

[v5,07/44] drm/connector: hdmi: Create an HDMI sub-state

Message ID 20231207-kms-hdmi-connector-state-v5-7-6538e19d634d@kernel.org
State Superseded
Headers show
Series drm/connector: Create HDMI Connector infrastructure | expand

Commit Message

Maxime Ripard Dec. 7, 2023, 3:49 p.m. UTC
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.

Signed-off-by: Maxime Ripard <mripard@kernel.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(+)

Comments

Dave Stevenson Dec. 14, 2023, 2:40 p.m. UTC | #1
On Thu, 7 Dec 2023 at 15:50, Maxime Ripard <mripard@kernel.org> wrote:
>
> 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.
>
> Signed-off-by: Maxime Ripard <mripard@kernel.org>

Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

> ---
>  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 54975de44a0e..e69c0cc1c6da 100644
> --- a/drivers/gpu/drm/drm_atomic_state_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_state_helper.c
> @@ -570,6 +570,22 @@ void drm_atomic_helper_connector_tv_reset(struct drm_connector *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
> @@ -619,6 +635,25 @@ int drm_atomic_helper_connector_tv_check(struct drm_connector *connector,
>  }
>  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
> 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
> @@ -71,7 +71,11 @@ void __drm_atomic_helper_connector_state_reset(struct drm_connector_state *conn_
>  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);
> 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
> @@ -1031,6 +1031,13 @@ struct drm_connector_state {
>          * 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;
>  };
>
>  /**
>
> --
> 2.43.0
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c
index 54975de44a0e..e69c0cc1c6da 100644
--- a/drivers/gpu/drm/drm_atomic_state_helper.c
+++ b/drivers/gpu/drm/drm_atomic_state_helper.c
@@ -570,6 +570,22 @@  void drm_atomic_helper_connector_tv_reset(struct drm_connector *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
@@ -619,6 +635,25 @@  int drm_atomic_helper_connector_tv_check(struct drm_connector *connector,
 }
 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
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
@@ -71,7 +71,11 @@  void __drm_atomic_helper_connector_state_reset(struct drm_connector_state *conn_
 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);
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
@@ -1031,6 +1031,13 @@  struct drm_connector_state {
 	 * 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;
 };
 
 /**