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

[Lyude Paul]

Reviewed-by: Lyude Paul <lyude at redhat.com>

Will add to the topic branch right now

On Wed, 2021-10-27 at 18:39 -0400, Alex Deucher wrote:
> 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 at amd.com>
> Cc: Lyude Paul <lyude at redhat.com>
> Cc: Dave Airlie <airlied at gmail.com>
> ---
> 
> Lyude, can you apply this to topic/amdgpu-dp2.0-mst? or Dave, if it's
> already pulled can you apply this to drm-next?
> 
> Thanks!
> 
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c         | 2 +-
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 4 +++-
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> 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 a02ca525610c..3f36dbb2c663 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -10723,9 +10723,9 @@ 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 719cbec4c45e..c200e07d2fb2 100644
> --- 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_encoding_cap;
> +       u8 link_encoding_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_encoding_cap =
> dc_link_dp_mst_decide_link_encoding_format(aconnector->dc_link);
> +#endif
>  
>         if (enable) {
>  

-- 
Cheers,
 Lyude Paul (she/her)
 Software Engineer at Red Hat