[PATCH 25/36] drm/amd/display: Fix SubVP control flow in the MPO context

[Hamza Mahfooz]

From: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>

SubVP has some issues related to how we allocate and enable it. This
commit fixes this behavior by adding the proper check and configuration
to the SubVP code path.

Reviewed-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c       | 16 ++++++++++++++--
 .../gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 18 ------------------
 .../drm/amd/display/dc/dcn32/dcn32_resource.c  |  6 ++++++
 3 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 1508679873d9..3a4f2d58f2e8 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2946,6 +2946,12 @@ static bool update_planes_and_stream_state(struct dc *dc,
 		dc_resource_state_copy_construct(
 				dc->current_state, context);
 
+		/* For each full update, remove all existing phantom pipes first.
+		 * Ensures that we have enough pipes for newly added MPO planes
+		 */
+		if (dc->res_pool->funcs->remove_phantom_pipes)
+			dc->res_pool->funcs->remove_phantom_pipes(dc, context);
+
 		/*remove old surfaces from context */
 		if (!dc_rem_all_planes_for_stream(dc, stream, context)) {
 
@@ -3353,8 +3359,14 @@ static void commit_planes_for_stream(struct dc *dc,
 		/* Since phantom pipe programming is moved to post_unlock_program_front_end,
 		 * move the SubVP lock to after the phantom pipes have been setup
 		 */
-		if (dc->hwss.subvp_pipe_control_lock)
-			dc->hwss.subvp_pipe_control_lock(dc, context, false, should_lock_all_pipes, NULL, subvp_prev_use);
+		if (should_lock_all_pipes && dc->hwss.interdependent_update_lock) {
+			if (dc->hwss.subvp_pipe_control_lock)
+				dc->hwss.subvp_pipe_control_lock(dc, context, false, should_lock_all_pipes, NULL, subvp_prev_use);
+		} else {
+			if (dc->hwss.subvp_pipe_control_lock)
+				dc->hwss.subvp_pipe_control_lock(dc, context, false, should_lock_all_pipes, NULL, subvp_prev_use);
+		}
+
 		return;
 	}
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index 7de511fd004b..d732b6f031a1 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -1860,24 +1860,6 @@ void dcn20_post_unlock_program_front_end(
 		}
 	}
 
-	for (i = 0; i < dc->res_pool->pipe_count; i++) {
-		struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
-		struct pipe_ctx *mpcc_pipe;
-
-		if (pipe->vtp_locked) {
-			dc->hwseq->funcs.wait_for_blank_complete(pipe->stream_res.opp);
-			pipe->plane_res.hubp->funcs->set_blank(pipe->plane_res.hubp, true);
-			pipe->vtp_locked = false;
-
-			for (mpcc_pipe = pipe->bottom_pipe; mpcc_pipe; mpcc_pipe = mpcc_pipe->bottom_pipe)
-				mpcc_pipe->plane_res.hubp->funcs->set_blank(mpcc_pipe->plane_res.hubp, true);
-
-			for (i = 0; i < dc->res_pool->pipe_count; i++)
-				if (context->res_ctx.pipe_ctx[i].update_flags.bits.disable)
-					dc->hwss.disable_plane(dc, &dc->current_state->res_ctx.pipe_ctx[i]);
-		}
-	}
-
 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
 		struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
 		struct pipe_ctx *old_pipe = &dc->current_state->res_ctx.pipe_ctx[i];
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
index 752a4accb116..9585b25f10e5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
@@ -1680,6 +1680,8 @@ static void dcn32_enable_phantom_plane(struct dc *dc,
 		phantom_plane->clip_rect.y = 0;
 		phantom_plane->clip_rect.height = phantom_stream->timing.v_addressable;
 
+		phantom_plane->is_phantom = true;
+
 		dc_add_plane_to_context(dc, phantom_stream, phantom_plane, context);
 
 		curr_pipe = curr_pipe->bottom_pipe;
@@ -1749,6 +1751,10 @@ bool dcn32_remove_phantom_pipes(struct dc *dc, struct dc_state *context)
 			pipe->stream->mall_stream_config.type = SUBVP_NONE;
 			pipe->stream->mall_stream_config.paired_stream = NULL;
 		}
+
+		if (pipe->plane_state) {
+			pipe->plane_state->is_phantom = false;
+		}
 	}
 	return removed_pipe;
 }
-- 
2.37.2