From ffbc5b745c72892af85c41b758ca77d6a59e0aeb Mon Sep 17 00:00:00 2001
From: Algea Cao <algea.cao@rock-chips.com>
Date: Fri, 2 Jul 2021 15:22:55 +0800
Subject: [PATCH] drm/rockchip: dw_hdmi: Add property to show whether sink is
 DVI

Add property output_type_capacity:
enums: DVI=0 HDMI=1

Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
Change-Id: Iad09b386b55c52e21b01f98e81fadfd5aa1a42d3
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c   |  6 ++++++
 drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 24 +++++++++++++++++++++
 include/drm/bridge/dw_hdmi.h                |  1 +
 3 files changed, 31 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 1bb727fe7229..d02c1bf563cf 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2947,6 +2947,12 @@ bool dw_hdmi_get_output_whether_hdmi(struct dw_hdmi *hdmi)
 }
 EXPORT_SYMBOL_GPL(dw_hdmi_get_output_whether_hdmi);
 
+int dw_hdmi_get_output_type_cap(struct dw_hdmi *hdmi)
+{
+	return hdmi->support_hdmi;
+}
+EXPORT_SYMBOL_GPL(dw_hdmi_get_output_type_cap);
+
 static void dw_hdmi_connector_force(struct drm_connector *connector)
 {
 	struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index b15ceefa6795..47f913ab5972 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -132,6 +132,7 @@ struct rockchip_hdmi {
 	struct drm_property *quant_range;
 	struct drm_property *hdr_panel_metadata_property;
 	struct drm_property *output_hdmi_dvi;
+	struct drm_property *output_type_capacity;
 
 	struct drm_property_blob *hdr_panel_blob_ptr;
 
@@ -1000,6 +1001,11 @@ static const struct drm_prop_enum_list output_hdmi_dvi_enum_list[] = {
 	{ 2, "force_dvi" },
 };
 
+static const struct drm_prop_enum_list output_type_cap_list[] = {
+	{ 0, "DVI" },
+	{ 1, "HDMI" },
+};
+
 static void
 dw_hdmi_rockchip_attach_properties(struct drm_connector *connector,
 				   unsigned int color, int version,
@@ -1129,6 +1135,15 @@ dw_hdmi_rockchip_attach_properties(struct drm_connector *connector,
 		drm_object_attach_property(&connector->base, prop, 0);
 	}
 
+	prop = drm_property_create_enum(connector->dev, 0,
+					 "output_type_capacity",
+					 output_type_cap_list,
+					 ARRAY_SIZE(output_type_cap_list));
+	if (prop) {
+		hdmi->output_type_capacity = prop;
+		drm_object_attach_property(&connector->base, prop, 0);
+	}
+
 	prop = connector->dev->mode_config.hdr_output_metadata_property;
 	if (version >= 0x211a)
 		drm_object_attach_property(&connector->base, prop, 0);
@@ -1188,6 +1203,12 @@ dw_hdmi_rockchip_destroy_properties(struct drm_connector *connector,
 				     hdmi->output_hdmi_dvi);
 		hdmi->output_hdmi_dvi = NULL;
 	}
+
+	if (hdmi->output_type_capacity) {
+		drm_property_destroy(connector->dev,
+				     hdmi->output_type_capacity);
+		hdmi->output_type_capacity = NULL;
+	}
 }
 
 static int
@@ -1298,6 +1319,9 @@ dw_hdmi_rockchip_get_property(struct drm_connector *connector,
 	} else if (property == hdmi->output_hdmi_dvi) {
 		*val = hdmi->force_output;
 		return 0;
+	} else if (property == hdmi->output_type_capacity) {
+		*val = dw_hdmi_get_output_type_cap(hdmi->hdmi);
+		return 0;
 	}
 
 	DRM_ERROR("failed to get rockchip hdmi connector property %s\n", property->name);
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 46cd16575473..12451542a2ec 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -219,5 +219,6 @@ void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data);
 void dw_hdmi_set_quant_range(struct dw_hdmi *hdmi);
 void dw_hdmi_set_output_type(struct dw_hdmi *hdmi, u64 val);
 bool dw_hdmi_get_output_whether_hdmi(struct dw_hdmi *hdmi);
+int dw_hdmi_get_output_type_cap(struct dw_hdmi *hdmi);
 
 #endif /* __IMX_HDMI_H__ */