drm/radeon/kms: add support for clock/data path routers

This is a follow on to:
26b5bc986423cf3887e09188cb662ed651c5374d
(drm/radeon/kms: add support for router objects)

That patch added support for systems that use a mux to control
the ddc line routing between the connectors.  This patch adds
support for systems that use a mux to control the encoder
clock and data path routing to the connectors.

Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=31339

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index a9d541534796..fe6c74780f18 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1116,7 +1116,7 @@ radeon_add_atom_connector(struct drm_device *dev,
                                 radeon_connector->shared_ddc = true;
                                 shared_ddc = true;
                         }
-                        if (radeon_connector->router_bus && router->valid &&
+                        if (radeon_connector->router_bus && router->ddc_valid &&
                             (radeon_connector->router.router_id == router->router_id)) {
                                 radeon_connector->shared_ddc = false;
                                 shared_ddc = false;
@@ -1136,7 +1136,7 @@ radeon_add_atom_connector(struct drm_device *dev,
         radeon_connector->connector_object_id = connector_object_id;
         radeon_connector->hpd = *hpd;
         radeon_connector->router = *router;
-        if (router->valid) {
+        if (router->ddc_valid || router->cd_valid) {
                 radeon_connector->router_bus = radeon_i2c_lookup(rdev, &router->i2c_info);
                 if (!radeon_connector->router_bus)
                         goto failed;