[PATCH 07/28] drm/i915/writeback: Add function for get_writeback_connector

[Suraj Kandpal]

Define function to get_writeback_connector which returns the
drm_writeback_connector given the drm_connector.

Signed-off-by: Suraj Kandpal <suraj.kand...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_writeback.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_writeback.c 
b/drivers/gpu/drm/i915/display/intel_writeback.c
index f3843ac9b026..1ff078a191df 100644
--- a/drivers/gpu/drm/i915/display/intel_writeback.c
+++ b/drivers/gpu/drm/i915/display/intel_writeback.c
@@ -36,6 +36,13 @@ static const u32 writeback_formats[] = {
        DRM_FORMAT_XBGR2101010,
 };
 
+static struct intel_writeback_connector
+*conn_to_intel_writeback_connector(struct intel_connector *connector)
+{
+       return container_of(connector, struct intel_writeback_connector,
+                           connector);
+}
+
 static int intel_writeback_connector_init(struct intel_connector *connector)
 {
        struct intel_digital_connector_state *conn_state;
@@ -60,6 +67,16 @@ intel_writeback_connector_alloc(struct intel_connector 
*connector)
        return 0;
 }
 
+static struct drm_writeback_connector *
+intel_get_writeback_connector(struct drm_connector *connector)
+{
+       struct intel_connector *conn = to_intel_connector(connector);
+       struct intel_writeback_connector *wb_conn =
+               conn_to_intel_writeback_connector(conn);
+
+       return &wb_conn->base;
+}
+
 static const struct drm_encoder_funcs drm_writeback_encoder_funcs = {
        .destroy = drm_encoder_cleanup,
 };
@@ -71,6 +88,7 @@ const struct drm_connector_funcs conn_funcs = {
 };
 
 static const struct drm_connector_helper_funcs conn_helper_funcs = {
+       .get_writeback_connector = intel_get_writeback_connector,
 };
 
 static const struct drm_writeback_connector_helper_funcs 
writeback_conn_helper_funcs = {
-- 
2.34.1