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drm/amd/display: Revert "Directly retrain link from debugfs"

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commit 1131cadfd7563975f3a4efcc6f7c1fdc872db38b upstream.

This reverts commit f5b6a20c7ef40599095c796b0500d842ffdbc639.

This patch broke new settings from taking effect. Hotplug is
required for new settings to take effect.

Reviewed-by: Mikita Lipski <mikita.lipski@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Anson Jacob 2021-08-24 09:32:53 -04:00 committed by Greg Kroah-Hartman
parent 6ecad8906f
commit 8af3a335b5
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
View File

@ -247,6 +247,7 @@ 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 +314,7 @@ 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];
dp_retrain_link_dp_test(link, &prefer_link_settings, false);
dc_link_set_preferred_training_settings(dc, &prefer_link_settings, NULL, link, true);
kfree(wr_buf);
return size;