[PATCH 5/9] drm/amdgpu/display: add freesync drm properties

[Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>]

From: Harry Wentland <harry.wentland@xxxxxxx>

Add connector properties for controlling freesync.

Signed-off-by: Harry Wentland <harry.wentland@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c   | 13 +++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h      |  4 ++++
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 19 +++++++++++++++++++
 3 files changed, 36 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 6748cd7fc129..642b47c5f4b8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -626,6 +626,19 @@ int amdgpu_display_modeset_create_props(struct amdgpu_device *adev)
 					 "dither",
 					 amdgpu_dither_enum_list, sz);
 
+	if (amdgpu_device_has_dc_support(adev)) {
+		adev->mode_info.freesync_property =
+			drm_property_create_bool(adev->ddev, 0, "freesync");
+		if (!adev->mode_info.freesync_property)
+			return -ENOMEM;
+		adev->mode_info.freesync_capable_property =
+			drm_property_create_bool(adev->ddev,
+						 0,
+						 "freesync_capable");
+		if (!adev->mode_info.freesync_capable_property)
+			return -ENOMEM;
+	}
+
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index b9e9e8b02fb7..f91a9bdcd63c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -339,6 +339,10 @@ struct amdgpu_mode_info {
 	struct drm_property *audio_property;
 	/* FMT dithering */
 	struct drm_property *dither_property;
+	/* it is used to allow enablement of freesync mode */
+	struct drm_property *freesync_property;
+	/* it is used to know about display capability of freesync mode */
+	struct drm_property *freesync_capable_property;
 	/* hardcoded DFP edid from BIOS */
 	struct edid *bios_hardcoded_edid;
 	int bios_hardcoded_edid_size;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index d599fbfa895b..8be3028850b6 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2718,6 +2718,12 @@ int amdgpu_dm_connector_atomic_set_property(struct drm_connector *connector,
 	} else if (property == adev->mode_info.underscan_property) {
 		dm_new_state->underscan_enable = val;
 		ret = 0;
+	} else if (property == adev->mode_info.freesync_property) {
+		dm_new_state->freesync_enable = val;
+		ret = 0;
+	} else if (property == adev->mode_info.freesync_capable_property) {
+		dm_new_state->freesync_capable = val;
+		ret = 0;
 	}
 
 	return ret;
@@ -2760,6 +2766,12 @@ int amdgpu_dm_connector_atomic_get_property(struct drm_connector *connector,
 	} else if (property == adev->mode_info.underscan_property) {
 		*val = dm_state->underscan_enable;
 		ret = 0;
+	} else if (property == adev->mode_info.freesync_property) {
+		*val = dm_state->freesync_enable;
+		ret = 0;
+	} else if (property == adev->mode_info.freesync_capable_property) {
+		*val = dm_state->freesync_capable;
+		ret = 0;
 	}
 	return ret;
 }
@@ -3584,6 +3596,13 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm,
 				adev->mode_info.underscan_vborder_property,
 				0);
 
+	if (connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+	    connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
+		drm_object_attach_property(&aconnector->base.base,
+				adev->mode_info.freesync_property, 0);
+		drm_object_attach_property(&aconnector->base.base,
+				adev->mode_info.freesync_capable_property, 0);
+	}
 }
 
 static int amdgpu_dm_i2c_xfer(struct i2c_adapter *i2c_adap,
-- 
2.17.1

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