[PATCH 15/21] drm/amd/display: Directly retrain link from debugfs

Qingqing Zhuo qingqing.zhuo at amd.com
Thu Apr 1 16:45:21 UTC 2021


From: Mikita Lipski <mikita.lipski at amd.com>

[why/how]
Skip logic that sets preffered link settings
and just retrain with new link_settings from Debugfs

Signed-off-by: Mikita Lipski <mikita.lipski at amd.com>
Reviewed-by: Mikita Lipski <Mikita.Lipski at amd.com>
Acked-by: Harry Wentland <Harry.Wentland at amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index 4a95d02ce933..6659e7c181c3 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -34,6 +34,7 @@
 #include "resource.h"
 #include "dsc.h"
 #include "dc_link_dp.h"
+#include "link_hwss.h"
 #include "dc/dc_dmub_srv.h"
 
 struct dmub_debugfs_trace_header {
@@ -246,7 +247,6 @@ static ssize_t dp_link_settings_write(struct file *f, const char __user *buf,
 {
 	struct amdgpu_dm_connector *connector = file_inode(f)->i_private;
 	struct dc_link *link = connector->dc_link;
-	struct dc *dc = (struct dc *)link->dc;
 	struct dc_link_settings prefer_link_settings;
 	char *wr_buf = NULL;
 	const uint32_t wr_buf_size = 40;
@@ -313,7 +313,7 @@ static ssize_t dp_link_settings_write(struct file *f, const char __user *buf,
 	prefer_link_settings.lane_count = param[0];
 	prefer_link_settings.link_rate = param[1];
 
-	dc_link_set_preferred_training_settings(dc, &prefer_link_settings, NULL, link, true);
+	dp_retrain_link_dp_test(link, &prefer_link_settings, false);
 
 	kfree(wr_buf);
 	return size;
-- 
2.17.1



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