On Thu, Aug 11, 2022 at 2:00 PM Hamza Mahfooz <hamza.mahfooz@xxxxxxx> wrote: > > Need to protect DSC code with CONFIG_DRM_AMD_DC_DCN. > Fixes the following build errors on arm64: > ERROR: modpost: "dc_dsc_get_policy_for_timing" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: modpost: "dc_dsc_compute_bandwidth_range" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > > Fixes: 0087990a9f57 ("drm/amd/display: consider DSC pass-through during mode validation") > Reported-by: Anders Roxell <anders.roxell@xxxxxxxxxx> > Signed-off-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx> Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx> > --- > v2: Fix WERROR build failure by guarding unused variables > --- > .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > index ef6c94cd852b..ce6929224a6e 100644 > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > @@ -1387,8 +1387,6 @@ bool pre_validate_dsc(struct drm_atomic_state *state, > return (ret == 0); > } > > -#endif > - > static unsigned int kbps_from_pbn(unsigned int pbn) > { > unsigned int kbps = pbn; > @@ -1416,17 +1414,19 @@ static bool is_dsc_common_config_possible(struct dc_stream_state *stream, > > return bw_range->max_target_bpp_x16 && bw_range->min_target_bpp_x16; > } > +#endif /* CONFIG_DRM_AMD_DC_DCN */ > > enum dc_status dm_dp_mst_is_port_support_mode( > struct amdgpu_dm_connector *aconnector, > struct dc_stream_state *stream) > { > + int bpp, pbn, branch_max_throughput_mps = 0; > +#if defined(CONFIG_DRM_AMD_DC_DCN) > struct dc_link_settings cur_link_settings; > unsigned int end_to_end_bw_in_kbps = 0; > unsigned int upper_link_bw_in_kbps = 0, down_link_bw_in_kbps = 0; > unsigned int max_compressed_bw_in_kbps = 0; > struct dc_dsc_bw_range bw_range = {0}; > - int bpp, pbn, branch_max_throughput_mps = 0; > > /* > * check if the mode could be supported if DSC pass-through is supported > @@ -1461,13 +1461,16 @@ enum dc_status dm_dp_mst_is_port_support_mode( > return DC_FAIL_BANDWIDTH_VALIDATE; > } > } else { > +#endif > /* check if mode could be supported within full_pbn */ > bpp = convert_dc_color_depth_into_bpc(stream->timing.display_color_depth) * 3; > pbn = drm_dp_calc_pbn_mode(stream->timing.pix_clk_100hz / 10, bpp, false); > > if (pbn > aconnector->port->full_pbn) > return DC_FAIL_BANDWIDTH_VALIDATE; > +#if defined(CONFIG_DRM_AMD_DC_DCN) > } > +#endif > > /* check is mst dsc output bandwidth branch_overall_throughput_0_mps */ > switch (stream->timing.pixel_encoding) { > -- > 2.37.1 >