openwrt/target/linux/bcm27xx/patches-5.10/950-0527-drm-connector-Create-a-helper-to-attach-the-hdr_outp.patch

From c65eada45c578cfb558ee9a92ce5048a367692d7 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Fri, 19 Mar 2021 11:21:41 +0100
Subject: [PATCH] drm/connector: Create a helper to attach the
 hdr_output_metadata property

All the drivers that implement HDR output call pretty much the same
function to initialise the hdr_output_metadata property, and while the
creation of that property is in a helper, every driver uses the same
code to attach it.

Provide a helper for it as well

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |  4 +---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c     |  3 +--
 drivers/gpu/drm/drm_connector.c               | 21 +++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_hdmi.c     |  3 +--
 include/drm/drm_connector.h                   |  1 +
 5 files changed, 25 insertions(+), 7 deletions(-)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6528,9 +6528,7 @@ void amdgpu_dm_connector_init_helper(str
 	if (connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 	    connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
 	    connector_type == DRM_MODE_CONNECTOR_eDP) {
-		drm_object_attach_property(
-			&aconnector->base.base,
-			dm->ddev->mode_config.hdr_output_metadata_property, 0);
+		drm_connector_attach_hdr_output_metadata_property(&aconnector->base);
 
 		if (!aconnector->mst_port)
 			drm_connector_attach_vrr_capable_property(&aconnector->base);
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2500,8 +2500,7 @@ static int dw_hdmi_connector_create(stru
 	drm_connector_attach_max_bpc_property(connector, 8, 16);
 
 	if (hdmi->version >= 0x200a && hdmi->plat_data->use_drm_infoframe)
-		drm_object_attach_property(&connector->base,
-			connector->dev->mode_config.hdr_output_metadata_property, 0);
+		drm_connector_attach_hdr_output_metadata_property(connector);
 
 	drm_connector_attach_encoder(connector, hdmi->bridge.encoder);
 
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -2144,6 +2144,27 @@ int drm_connector_attach_max_bpc_propert
 EXPORT_SYMBOL(drm_connector_attach_max_bpc_property);
 
 /**
+ * drm_connector_attach_hdr_output_metadata_property - attach "HDR_OUTPUT_METADA" property
+ * @connector: connector to attach the property on.
+ *
+ * This is used to allow the userspace to send HDR Metadata to the
+ * driver.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_property *prop = dev->mode_config.hdr_output_metadata_property;
+
+	drm_object_attach_property(&connector->base, prop, 0);
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_connector_attach_hdr_output_metadata_property);
+
+/**
  * drm_connector_set_vrr_capable_property - sets the variable refresh rate
  * capable property for a connector
  * @connector: drm connector
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2971,8 +2971,7 @@ intel_hdmi_add_properties(struct intel_h
 	drm_connector_attach_content_type_property(connector);
 
 	if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
-		drm_object_attach_property(&connector->base,
-			connector->dev->mode_config.hdr_output_metadata_property, 0);
+		drm_connector_attach_hdr_output_metadata_property(connector);
 
 	if (!HAS_GMCH(dev_priv))
 		drm_connector_attach_max_bpc_property(connector, 8, 12);
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1622,6 +1622,7 @@ int drm_connector_attach_scaling_mode_pr
 					       u32 scaling_mode_mask);
 int drm_connector_attach_vrr_capable_property(
 		struct drm_connector *connector);
+int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector);
 int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
 int drm_mode_create_hdmi_colorspace_property(struct drm_connector *connector);
 int drm_mode_create_dp_colorspace_property(struct drm_connector *connector);