diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_resource.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index 49f8c90f0d2b..42a927710743 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -1764,6 +1764,29 @@ int recource_find_free_pipe_not_used_in_cur_res_ctx( return free_pipe_idx; } +int recource_find_free_pipe_used_as_otg_master_in_cur_res_ctx( + const struct resource_context *cur_res_ctx, + struct resource_context *new_res_ctx, + const struct resource_pool *pool) +{ + int free_pipe_idx = FREE_PIPE_INDEX_NOT_FOUND; + const struct pipe_ctx *new_pipe, *cur_pipe; + int i; + + for (i = 0; i < pool->pipe_count; i++) { + cur_pipe = &cur_res_ctx->pipe_ctx[i]; + new_pipe = &new_res_ctx->pipe_ctx[i]; + + if (resource_is_pipe_type(cur_pipe, OTG_MASTER) && + resource_is_pipe_type(new_pipe, FREE_PIPE)) { + free_pipe_idx = i; + break; + } + } + + return free_pipe_idx; +} + int resource_find_free_pipe_used_as_cur_sec_dpp_in_mpcc_combine( const struct resource_context *cur_res_ctx, struct resource_context *new_res_ctx, @@ -3600,9 +3623,21 @@ static bool acquire_otg_master_pipe_for_stream( int pipe_idx; struct pipe_ctx *pipe_ctx = NULL; - pipe_idx = recource_find_free_pipe_not_used_in_cur_res_ctx( + /* + * Upper level code is responsible to optimize unnecessary addition and + * removal for unchanged streams. So unchanged stream will keep the same + * OTG master instance allocated. When current stream is removed and a + * new stream is added, we want to reuse the OTG instance made available + * by the removed stream first. If not found, we try to avoid of using + * any free pipes already used in current context as this could tear + * down exiting ODM/MPC/MPO configuration unnecessarily. + */ + pipe_idx = recource_find_free_pipe_used_as_otg_master_in_cur_res_ctx( &cur_ctx->res_ctx, &new_ctx->res_ctx, pool); if (pipe_idx == FREE_PIPE_INDEX_NOT_FOUND) + pipe_idx = recource_find_free_pipe_not_used_in_cur_res_ctx( + &cur_ctx->res_ctx, &new_ctx->res_ctx, pool); + if (pipe_idx == FREE_PIPE_INDEX_NOT_FOUND) pipe_idx = resource_find_any_free_pipe(&new_ctx->res_ctx, pool); if (pipe_idx != FREE_PIPE_INDEX_NOT_FOUND) { pipe_ctx = &new_ctx->res_ctx.pipe_ctx[pipe_idx]; |