sizeof(vendor_lttpr_write_data));
}
-static void vendor_specific_lttpr_wa_one_end(
- struct dc_link *link,
- uint8_t retry_count)
-{
- const uint8_t vendor_lttpr_write_data[4] = {0x1, 0x50, 0x63, 0x0};
- const uint8_t offset = dp_convert_to_count(
- link->dpcd_caps.lttpr_caps.phy_repeater_cnt);
- uint32_t vendor_lttpr_write_address = 0xF004F;
-
- if (!retry_count) {
- if (offset != 0xFF)
- vendor_lttpr_write_address +=
- ((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));
-
- /* W/A for certain LTTPR to reset their lane settings, part two of two */
- core_link_write_dpcd(
- link,
- vendor_lttpr_write_address,
- &vendor_lttpr_write_data[0],
- sizeof(vendor_lttpr_write_data));
- }
-}
-
static void vendor_specific_lttpr_wa_one_two(
struct dc_link *link,
const uint8_t rate)
}
}
-static void vendor_specific_lttpr_wa_three(
+static void dp_fixed_vs_pe_read_lane_adjust(
struct dc_link *link,
- union lane_adjust dpcd_lane_adjust[LANE_COUNT_DP_MAX])
+ union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX])
{
const uint8_t vendor_lttpr_write_data_vs[3] = {0x0, 0x53, 0x63};
const uint8_t vendor_lttpr_write_data_pe[3] = {0x0, 0x54, 0x63};
1);
for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
- dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_LANE = (dprx_vs >> (2 * lane)) & 0x3;
- dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_LANE = (dprx_pe >> (2 * lane)) & 0x3;
- }
-}
-
-static void vendor_specific_lttpr_wa_three_dpcd(
- struct dc_link *link,
- union dpcd_training_lane dpcd_lane_adjust[LANE_COUNT_DP_MAX])
-{
- union lane_adjust lane_adjust[LANE_COUNT_DP_MAX];
- uint8_t lane = 0;
-
- vendor_specific_lttpr_wa_three(link, lane_adjust);
-
- for (lane = 0; lane < LANE_COUNT_DP_MAX; lane++) {
- dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_SET = lane_adjust[lane].bits.VOLTAGE_SWING_LANE;
- dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_SET = lane_adjust[lane].bits.PRE_EMPHASIS_LANE;
+ dpcd_lane_adjust[lane].bits.VOLTAGE_SWING_SET = (dprx_vs >> (2 * lane)) & 0x3;
+ dpcd_lane_adjust[lane].bits.PRE_EMPHASIS_SET = (dprx_pe >> (2 * lane)) & 0x3;
}
}
dpcd_lane_adjust,
offset);
- if (link->dc->debug.apply_vendor_specific_lttpr_wa &&
- (link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) &&
- link->lttpr_mode == LTTPR_MODE_TRANSPARENT) {
- vendor_specific_lttpr_wa_one_end(link, retry_count);
- vendor_specific_lttpr_wa_three(link, dpcd_lane_adjust);
- }
-
/* 5. check CR done*/
if (dp_is_cr_done(lane_count, dpcd_lane_status))
return LINK_TRAINING_SUCCESS;
if (link->dc->debug.apply_vendor_specific_lttpr_wa &&
(link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) &&
link->lttpr_mode == LTTPR_MODE_TRANSPARENT)
- vendor_specific_lttpr_wa_three_dpcd(
+ dp_fixed_vs_pe_read_lane_adjust(
link,
link_training_settings.dpcd_lane_settings);