drm/amd/display: Drop DMCUB from DCN21 resources

The interface to the DMCUB won't be through DC itself. DC will instead
call into the DMUB interface introduced with a future change.

The CONFIG_DRM_AMD_DC_DMUB defines will still be used for now but will
be dropped at the end of the series.

Since this define was never configurable in the first place this code
wasn't used.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c

@@ -373,20 +373,6 @@ static const struct dce_abm_mask abm_mask = {
 		ABM_MASK_SH_LIST_DCN20(_MASK)
 };
 
-#ifdef CONFIG_DRM_AMD_DC_DMUB
-static const struct dcn21_dmcub_registers dmcub_regs = {
-		DMCUB_REG_LIST_DCN()
-};
-
-static const struct dcn21_dmcub_shift dmcub_shift = {
-		DMCUB_COMMON_MASK_SH_LIST_BASE(__SHIFT)
-};
-
-static const struct dcn21_dmcub_mask dmcub_mask = {
-		DMCUB_COMMON_MASK_SH_LIST_BASE(_MASK)
-};
-#endif
-
 #define audio_regs(id)\
 [id] = {\
 		AUD_COMMON_REG_LIST(id)\
@@ -970,11 +956,6 @@ static void destruct(struct dcn21_resource_pool *pool)
 	if (pool->base.dmcu != NULL)
 		dce_dmcu_destroy(&pool->base.dmcu);
 
-#ifdef CONFIG_DRM_AMD_DC_DMUB
-	if (pool->base.dmcub != NULL)
-		dcn21_dmcub_destroy(&pool->base.dmcub);
-#endif
-
 	if (pool->base.dccg != NULL)
 		dcn_dccg_destroy(&pool->base.dccg);
 
@@ -1766,18 +1747,6 @@ static bool construct(
 		goto create_fail;
 	}
 
-#ifdef CONFIG_DRM_AMD_DC_DMUB
-	pool->base.dmcub = dcn21_dmcub_create(ctx,
-			&dmcub_regs,
-			&dmcub_shift,
-			&dmcub_mask);
-	if (pool->base.dmcub == NULL) {
-		dm_error("DC: failed to create dmcub!\n");
-		BREAK_TO_DEBUGGER();
-		goto create_fail;
-	}
-#endif
-
 	pool->base.pp_smu = dcn21_pp_smu_create(ctx);
 
 	num_pipes = dcn2_1_ip.max_num_dpp;