drm/amd/display: move link_hwss to link folder and break down to files

[why]
Move link_hwss to its own folder as part of DC LIB and break it down
to separate file one for each type of backend for code isolation.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 78 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/virtual/Makefile b/drivers/gpu/drm/amd/display/dc/virtual/Makefile
index 07326d244d50..931facd4dab5 100644
--- a/drivers/gpu/drm/amd/display/dc/virtual/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/virtual/Makefile
@@ -23,7 +23,7 @@
 # Makefile for the virtual sub-component of DAL.
 # It provides the control and status of HW CRTC block.
 
-VIRTUAL = virtual_link_encoder.o virtual_stream_encoder.o
+VIRTUAL = virtual_link_encoder.o virtual_stream_encoder.o virtual_link_hwss.o
 
 AMD_DAL_VIRTUAL = $(addprefix $(AMDDALPATH)/dc/virtual/,$(VIRTUAL))
 
diff --git a/drivers/gpu/drm/amd/display/dc/virtual/virtual_link_hwss.c b/drivers/gpu/drm/amd/display/dc/virtual/virtual_link_hwss.c
new file mode 100644
index 000000000000..525eba2a3354
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/virtual/virtual_link_hwss.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include "virtual_link_hwss.h"
+
+void virtual_setup_stream_encoder(struct pipe_ctx *pipe_ctx)
+{
+}
+
+void virtual_reset_stream_encoder(struct pipe_ctx *pipe_ctx)
+{
+}
+static const struct link_hwss virtual_link_hwss = {
+	.setup_stream_encoder = virtual_setup_stream_encoder,
+	.reset_stream_encoder = virtual_reset_stream_encoder,
+};
+
+const struct link_hwss *get_virtual_link_hwss(void)
+{
+	return &virtual_link_hwss;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/virtual/virtual_link_hwss.h b/drivers/gpu/drm/amd/display/dc/virtual/virtual_link_hwss.h
new file mode 100644
index 000000000000..e6bcb4bb0f3a
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/virtual/virtual_link_hwss.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2022 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+#ifndef __DC_VIRTUAL_LINK_HWSS_H__
+#define __DC_VIRTUAL_LINK_HWSS_H__
+
+#include "core_types.h"
+
+void virtual_setup_stream_encoder(struct pipe_ctx *pipe_ctx);
+void virtual_reset_stream_encoder(struct pipe_ctx *pipe_ctx);
+const struct link_hwss *get_virtual_link_hwss(void);
+
+#endif /* __DC_VIRTUAL_LINK_HWSS_H__ */