From: abdoulaye berthe <abdoulaye.berthe@xxxxxxx>
Make sure that lttpr_caps has the mode set to repeater.
Signed-off-by: abdoulaye berthe <abdoulaye.berthe@xxxxxxx>
Reviewed-by: Wenjing Liu <Wenjing.Liu@xxxxxxx>
Acked-by: Harry Wentland <harry.wentland@xxxxxxx>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 38b0f4347383..0d0507cc9bf9 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -1217,24 +1217,33 @@ static void configure_lttpr_mode(struct dc_link *link)
uint8_t repeater_cnt;
uint32_t aux_interval_address;
uint8_t repeater_id;
+ enum dc_status result = DC_ERROR_UNEXPECTED;
uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT;
DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__);
- core_link_write_dpcd(link,
+ result = core_link_write_dpcd(link,
DP_PHY_REPEATER_MODE,
(uint8_t *)&repeater_mode,
sizeof(repeater_mode));
+ if (result == DC_OK) {
+ link->dpcd_caps.lttpr_caps.mode = repeater_mode;
+ }
+
if (!link->is_lttpr_mode_transparent) {
DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Non Transparent Mode\n", __func__);
repeater_mode = DP_PHY_REPEATER_MODE_NON_TRANSPARENT;
- core_link_write_dpcd(link,
+ result = core_link_write_dpcd(link,
DP_PHY_REPEATER_MODE,
(uint8_t *)&repeater_mode,
sizeof(repeater_mode));
+ if (result == DC_OK) {
+ link->dpcd_caps.lttpr_caps.mode = repeater_mode;
+ }
+
repeater_cnt = convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
for (repeater_id = repeater_cnt; repeater_id > 0; repeater_id--) {
aux_interval_address = DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 +
--
2.24.1
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