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From 4c8f4ced643046fc074fe70ff45f8b9d95e88d1c Mon Sep 17 00:00:00 2001
From: Martin Tsai <Martin.Tsai@amd.com>
Date: Tue, 17 Apr 2018 17:20:06 -0400
Subject: [PATCH 4358/5725] drm/amd/display: to synchronize the hubp and dpp
 programming in cursor control

Signed-off-by: Martin Tsai <Martin.Tsai@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 3b2ddbd..3732a1d 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -178,6 +178,7 @@ bool dc_stream_set_cursor_attributes(
 	int i;
 	struct dc  *core_dc;
 	struct resource_context *res_ctx;
+	struct pipe_ctx *pipe_to_program = NULL;
 
 	if (NULL == stream) {
 		dm_error("DC: dc_stream is NULL!\n");
@@ -205,9 +206,17 @@ bool dc_stream_set_cursor_attributes(
 		if (pipe_ctx->top_pipe && pipe_ctx->plane_state != pipe_ctx->top_pipe->plane_state)
 			continue;
 
+		if (!pipe_to_program) {
+			pipe_to_program = pipe_ctx;
+			core_dc->hwss.pipe_control_lock(core_dc, pipe_to_program, true);
+		}
 
 		core_dc->hwss.set_cursor_attribute(pipe_ctx);
 	}
+
+	if (pipe_to_program)
+		core_dc->hwss.pipe_control_lock(core_dc, pipe_to_program, false);
+
 	return true;
 }
 
@@ -218,6 +227,7 @@ bool dc_stream_set_cursor_position(
 	int i;
 	struct dc  *core_dc;
 	struct resource_context *res_ctx;
+	struct pipe_ctx *pipe_to_program = NULL;
 
 	if (NULL == stream) {
 		dm_error("DC: dc_stream is NULL!\n");
@@ -243,9 +253,17 @@ bool dc_stream_set_cursor_position(
 				!pipe_ctx->plane_res.ipp)
 			continue;
 
+		if (!pipe_to_program) {
+			pipe_to_program = pipe_ctx;
+			core_dc->hwss.pipe_control_lock(core_dc, pipe_to_program, true);
+		}
+
 		core_dc->hwss.set_cursor_position(pipe_ctx);
 	}
 
+	if (pipe_to_program)
+		core_dc->hwss.pipe_control_lock(core_dc, pipe_to_program, false);
+
 	return true;
 }
 
-- 
2.7.4