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authorabdoulaye berthe <[email protected]>2019-12-11 15:18:08 -0500
committerAlex Deucher <[email protected]>2020-01-16 14:11:20 -0500
commita166f86e8a3c91adb303fc511acbfa9d9f2899a1 (patch)
treeefd44c2af9287cc715a08f9fc348aee330cb5e3b
parente8027e08843f8934f9701cbeea43268c65ade55b (diff)
drm/amd/display: store lttpr mode with dpcd
Make sure that lttpr_caps has the mode set to repeater. Signed-off-by: abdoulaye berthe <[email protected]> Reviewed-by: Wenjing Liu <[email protected]> Acked-by: Harry Wentland <[email protected]> Acked-by: Rodrigo Siqueira <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
-rw-r--r--drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c13
1 files 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 5d0e7abb2b98..f703b3998644 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 +