drm/amdgpu: Add DRM_MODE_CONNECTOR_VIRTUAL connector in amdgpu_connector_add.

For virtual display feature, add one connector type in amdgpu_connector_add.

Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
index ff0b55a65ca3fcb29d51a2b11bf46b14c4a848a0..319a5e1d9389fbf8f6c5146ad71f9763620533cd 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
@@ -1504,6 +1504,86 @@ static const struct drm_connector_funcs amdgpu_connector_edp_funcs = {
        .force = amdgpu_connector_dvi_force,
 };
 
+static struct drm_encoder *
+amdgpu_connector_virtual_encoder(struct drm_connector *connector)
+{
+       int enc_id = connector->encoder_ids[0];
+       struct drm_encoder *encoder;
+       int i;
+       for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
+               if (connector->encoder_ids[i] == 0)
+                       break;
+
+               encoder = drm_encoder_find(connector->dev, connector->encoder_ids[i]);
+               if (!encoder)
+                       continue;
+
+               if (encoder->encoder_type == DRM_MODE_ENCODER_VIRTUAL)
+                       return encoder;
+       }
+
+       /* pick the first one */
+       if (enc_id)
+               return drm_encoder_find(connector->dev, enc_id);
+       return NULL;
+}
+
+static int amdgpu_connector_virtual_get_modes(struct drm_connector *connector)
+{
+       struct drm_encoder *encoder = amdgpu_connector_best_single_encoder(connector);
+
+       if (encoder) {
+               amdgpu_connector_add_common_modes(encoder, connector);
+       }
+
+       return 0;
+}
+
+static int amdgpu_connector_virtual_mode_valid(struct drm_connector *connector,
+                                          struct drm_display_mode *mode)
+{
+       return MODE_OK;
+}
+
+int amdgpu_connector_virtual_dpms(struct drm_connector *connector, int mode)
+{
+       return 0;
+}
+
+static enum drm_connector_status
+
+amdgpu_connector_virtual_detect(struct drm_connector *connector, bool force)
+{
+       return connector_status_connected;
+}
+
+int amdgpu_connector_virtual_set_property(struct drm_connector *connector,
+                                 struct drm_property *property,
+                                 uint64_t val)
+{
+       return 0;
+}
+
+static void amdgpu_connector_virtual_force(struct drm_connector *connector)
+{
+       return;
+}
+
+static const struct drm_connector_helper_funcs amdgpu_connector_virtual_helper_funcs = {
+       .get_modes = amdgpu_connector_virtual_get_modes,
+       .mode_valid = amdgpu_connector_virtual_mode_valid,
+       .best_encoder = amdgpu_connector_virtual_encoder,
+};
+
+static const struct drm_connector_funcs amdgpu_connector_virtual_funcs = {
+       .dpms = amdgpu_connector_virtual_dpms,
+       .detect = amdgpu_connector_virtual_detect,
+       .fill_modes = drm_helper_probe_single_connector_modes,
+       .set_property = amdgpu_connector_virtual_set_property,
+       .destroy = amdgpu_connector_destroy,
+       .force = amdgpu_connector_virtual_force,
+};
+
 void
 amdgpu_connector_add(struct amdgpu_device *adev,
                      uint32_t connector_id,
@@ -1888,6 +1968,17 @@ amdgpu_connector_add(struct amdgpu_device *adev,
                        connector->interlace_allowed = false;
                        connector->doublescan_allowed = false;
                        break;
+               case DRM_MODE_CONNECTOR_VIRTUAL:
+                       amdgpu_dig_connector = kzalloc(sizeof(struct amdgpu_connector_atom_dig), GFP_KERNEL);
+                       if (!amdgpu_dig_connector)
+                               goto failed;
+                       amdgpu_connector->con_priv = amdgpu_dig_connector;
+                       drm_connector_init(dev, &amdgpu_connector->base, &amdgpu_connector_virtual_funcs, connector_type);
+                       drm_connector_helper_add(&amdgpu_connector->base, &amdgpu_connector_virtual_helper_funcs);
+                       subpixel_order = SubPixelHorizontalRGB;
+                       connector->interlace_allowed = false;
+                       connector->doublescan_allowed = false;
+                       break;
                }
        }