drm/amdgpu/display: fix build when CONFIG_DRM_AMD_DC_DCN is not set

Need to guard some things with CONFIG_DRM_AMD_DC_DCN.

Fixes: 41724ea273cdda ("drm/amd/display: Add DP 2.0 MST DM Support")
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Dave Airlie <airlied@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211027223914.1776061-1-alexander.deucher@amd.com

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 ecdeeed..ee02776 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -10683,9 +10683,9 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
        struct dm_crtc_state *dm_old_crtc_state;
 #if defined(CONFIG_DRM_AMD_DC_DCN)
        struct dsc_mst_fairness_vars vars[MAX_PIPES];
-#endif
        struct drm_dp_mst_topology_state *mst_state;
        struct drm_dp_mst_topology_mgr *mgr;
+#endif
 
        trace_amdgpu_dm_atomic_check_begin(state);
 

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
index 53b5cc7..8cbeeb7 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -219,7 +219,7 @@ bool dm_helpers_dp_mst_write_payload_allocation_table(
        struct drm_dp_mst_topology_mgr *mst_mgr;
        struct drm_dp_mst_port *mst_port;
        bool ret;
-       u8 link_coding_cap;
+       u8 link_coding_cap = DP_8b_10b_ENCODING;
 
        aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
        /* Accessing the connector state is required for vcpi_slots allocation
@@ -239,7 +239,9 @@ bool dm_helpers_dp_mst_write_payload_allocation_table(
 
        mst_port = aconnector->port;
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
        link_coding_cap = dc_link_dp_mst_decide_link_encoding_format(aconnector->dc_link);
+#endif
 
        if (enable) {