drm/amd/display: Add function pointer for validate bw usb4

[WHY]
In order to follow the new protocol of calling link functions

[HOW]
Add the function pointer to the link_srv

Reviewed-by: Kshitij Bhardwaj <[email protected]>
Acked-by: Qingqing Zhuo <[email protected]>
Signed-off-by: Mustapha Ghaddar <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/link/link_validation.c b/drivers/gpu/drm/amd/display/dc/link/link_validation.c
index afbd22631721..d4b7da526f0a 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_validation.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_validation.c
@@ -30,6 +30,7 @@
  */
 #include "link_validation.h"
 #include "protocols/link_dp_capability.h"
+#include "protocols/link_dp_dpia_bw.h"
 #include "resource.h"
 
 #define DC_LOGGER_INIT(logger)
@@ -343,3 +344,20 @@ enum dc_status link_validate_mode_timing(
 
 	return DC_OK;
 }
+
+bool link_validate_dpia_bandwidth(const struct dc_stream_state *stream, const unsigned int num_streams)
+{
+	bool ret = true;
+	int bw_needed[MAX_DPIA_NUM];
+	struct dc_link *link[MAX_DPIA_NUM];
+
+	if (!num_streams || num_streams > MAX_DPIA_NUM)
+		return ret;
+
+	for (uint8_t i = 0; i < num_streams; ++i) {
+
+		link[i] = stream[i].link;
+		bw_needed[i] = dc_bandwidth_in_kbps_from_timing(&stream[i].timing);
+	}
+	return ret;
+}