diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c b/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c index e938bf9986d3..d7a531e9700f 100644 --- a/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c @@ -867,13 +867,55 @@ enum dc_status dce100_validate_plane(const struct dc_plane_state *plane_state, s return DC_FAIL_SURFACE_VALIDATE; } +struct stream_encoder *dce100_find_first_free_match_stream_enc_for_link( + struct resource_context *res_ctx, + const struct resource_pool *pool, + struct dc_stream_state *stream) +{ + int i; + int j = -1; + struct dc_link *link = stream->link; + + for (i = 0; i < pool->stream_enc_count; i++) { + if (!res_ctx->is_stream_enc_acquired[i] && + pool->stream_enc[i]) { + /* Store first available for MST second display + * in daisy chain use case + */ + j = i; + if (pool->stream_enc[i]->id == + link->link_enc->preferred_engine) + return pool->stream_enc[i]; + } + } + + /* + * below can happen in cases when stream encoder is acquired: + * 1) for second MST display in chain, so preferred engine already + * acquired; + * 2) for another link, which preferred engine already acquired by any + * MST configuration. + * + * If signal is of DP type and preferred engine not found, return last available + * + * TODO - This is just a patch up and a generic solution is + * required for non DP connectors. + */ + + if (j >= 0 && link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT) + return pool->stream_enc[j]; + + return NULL; +} + static const struct resource_funcs dce100_res_pool_funcs = { .destroy = dce100_destroy_resource_pool, .link_enc_create = dce100_link_encoder_create, .validate_bandwidth = dce100_validate_bandwidth, .validate_plane = dce100_validate_plane, .add_stream_to_ctx = dce100_add_stream_to_ctx, - .validate_global = dce100_validate_global + .validate_global = dce100_validate_global, + .find_first_free_match_stream_enc_for_link = dce100_find_first_free_match_stream_enc_for_link }; static bool construct( |