drm/amd/display: allow taking split pipes during resource mapping

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 6202b4b..124fcac 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1406,6 +1406,42 @@ static void calculate_phy_pix_clks(struct validate_context *context)
        }
 }
 
+#if defined(CONFIG_DRM_AMD_DC_DCN1_0)
+static int acquire_first_split_pipe(
+               struct resource_context *res_ctx,
+               const struct resource_pool *pool,
+               struct core_stream *stream)
+{
+       int i;
+
+       for (i = 0; i < pool->pipe_count; i++) {
+               struct pipe_ctx *pipe_ctx = &res_ctx->pipe_ctx[i];
+
+               if (pipe_ctx->top_pipe &&
+                               pipe_ctx->top_pipe->surface == pipe_ctx->surface) {
+                       int mpc_idx = pipe_ctx->mpc_idx;
+
+                       pipe_ctx->top_pipe->bottom_pipe = pipe_ctx->bottom_pipe;
+                       pipe_ctx->bottom_pipe->top_pipe = pipe_ctx->top_pipe;
+
+                       memset(pipe_ctx, 0, sizeof(*pipe_ctx));
+                       pipe_ctx->tg = pool->timing_generators[i];
+                       pipe_ctx->mi = pool->mis[i];
+                       pipe_ctx->ipp = pool->ipps[i];
+                       pipe_ctx->xfm = pool->transforms[i];
+                       pipe_ctx->opp = pool->opps[i];
+                       pipe_ctx->dis_clk = pool->display_clock;
+                       pipe_ctx->pipe_idx = i;
+                       pipe_ctx->mpc_idx = mpc_idx;
+
+                       pipe_ctx->stream = stream;
+                       return i;
+               }
+       }
+       return -1;
+}
+#endif
+
 enum dc_status resource_map_pool_resources(
                const struct core_dc *dc,
                struct validate_context *context,
@@ -1477,8 +1513,11 @@ enum dc_status resource_map_pool_resources(
                if (old_context && resource_is_stream_unchanged(old_context, stream))
                        continue;
                /* acquire new resources */
-               pipe_idx = acquire_first_free_pipe(
-                               &context->res_ctx, pool, stream);
+               pipe_idx = acquire_first_free_pipe(&context->res_ctx, pool, stream);
+#if defined(CONFIG_DRM_AMD_DC_DCN1_0)
+               if (pipe_idx < 0)
+                       acquire_first_split_pipe(&context->res_ctx, pool, stream);
+#endif
                if (pipe_idx < 0)
                        return DC_NO_CONTROLLER_RESOURCE;