diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 49 |
1 files changed, 33 insertions, 16 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 27a7d2a58079..91cd884d6f25 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 @@ -13,7 +13,6 @@ #include "core_status.h" #include "dpcd_defs.h" -#include "resource.h" #define DC_LOGGER \ link->ctx->logger @@ -220,6 +219,30 @@ static enum dpcd_training_patterns return dpcd_tr_pattern; } +static uint8_t dc_dp_initialize_scrambling_data_symbols( + struct dc_link *link, + enum dc_dp_training_pattern pattern) +{ + uint8_t disable_scrabled_data_symbols = 0; + + switch (pattern) { + case DP_TRAINING_PATTERN_SEQUENCE_1: + case DP_TRAINING_PATTERN_SEQUENCE_2: + case DP_TRAINING_PATTERN_SEQUENCE_3: + disable_scrabled_data_symbols = 1; + break; + case DP_TRAINING_PATTERN_SEQUENCE_4: + disable_scrabled_data_symbols = 0; + break; + default: + ASSERT(0); + DC_LOG_HW_LINK_TRAINING("%s: Invalid HW Training pattern: %d\n", + __func__, pattern); + break; + } + return disable_scrabled_data_symbols; +} + static inline bool is_repeater(struct dc_link *link, uint32_t offset) { return (!link->is_lttpr_mode_transparent && offset != 0); @@ -252,6 +275,9 @@ static void dpcd_set_lt_pattern_and_lane_settings( dpcd_pattern.v1_4.TRAINING_PATTERN_SET = dc_dp_training_pattern_to_dpcd_training_pattern(link, pattern); + dpcd_pattern.v1_4.SCRAMBLING_DISABLE = + dc_dp_initialize_scrambling_data_symbols(link, pattern); + dpcd_lt_buffer[DP_TRAINING_PATTERN_SET - DP_TRAINING_PATTERN_SET] = dpcd_pattern.raw; @@ -1710,19 +1736,10 @@ bool dc_link_dp_sync_lt_end(struct dc_link *link, bool link_down) static struct dc_link_settings get_max_link_cap(struct dc_link *link) { - /* Set Default link settings */ - struct dc_link_settings max_link_cap = {LANE_COUNT_FOUR, LINK_RATE_HIGH, - LINK_SPREAD_05_DOWNSPREAD_30KHZ, false, 0}; - - /* Higher link settings based on feature supported */ - if (link->link_enc->features.flags.bits.IS_HBR2_CAPABLE) - max_link_cap.link_rate = LINK_RATE_HIGH2; - - if (link->link_enc->features.flags.bits.IS_HBR3_CAPABLE) - max_link_cap.link_rate = LINK_RATE_HIGH3; + struct dc_link_settings max_link_cap = {0}; - if (link->link_enc->funcs->get_max_link_cap) - link->link_enc->funcs->get_max_link_cap(link->link_enc, &max_link_cap); + /* get max link encoder capability */ + link->link_enc->funcs->get_max_link_cap(link->link_enc, &max_link_cap); /* Lower link settings based on sink's link cap */ if (link->reported_link_cap.lane_count < max_link_cap.lane_count) @@ -2426,7 +2443,7 @@ static bool handle_hpd_irq_psr_sink(struct dc_link *link) { union dpcd_psr_configuration psr_configuration; - if (!link->psr_feature_enabled) + if (!link->psr_settings.psr_feature_enabled) return false; dm_helpers_dp_read_dpcd( @@ -2530,7 +2547,7 @@ static void dp_test_send_phy_test_pattern(struct dc_link *link) /* get phy test pattern and pattern parameters from DP receiver */ core_link_read_dpcd( link, - DP_TEST_PHY_PATTERN, + DP_PHY_TEST_PATTERN, &dpcd_test_pattern.raw, sizeof(dpcd_test_pattern)); core_link_read_dpcd( @@ -4240,7 +4257,7 @@ void dpcd_set_source_specific_data(struct dc_link *link) { const uint32_t post_oui_delay = 30; // 30ms uint8_t dspc = 0; - enum dc_status ret = DC_ERROR_UNEXPECTED; + enum dc_status ret; ret = core_link_read_dpcd(link, DP_DOWN_STREAM_PORT_COUNT, &dspc, sizeof(dspc)); |