diff options
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 26 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dp_types.h | 12 |
2 files changed, 36 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 22dabe596dfc..c5f5d25035d2 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 @@ -4085,9 +4085,32 @@ static bool handle_hpd_irq_psr_sink(struct dc_link *link) return false; } +static enum dc_link_rate get_link_rate_from_test_link_rate(uint8_t test_rate) +{ + switch (test_rate) { + case DP_TEST_LINK_RATE_RBR: + return LINK_RATE_LOW; + case DP_TEST_LINK_RATE_HBR: + return LINK_RATE_HIGH; + case DP_TEST_LINK_RATE_HBR2: + return LINK_RATE_HIGH2; + case DP_TEST_LINK_RATE_HBR3: + return LINK_RATE_HIGH3; + case DP_TEST_LINK_RATE_UHBR10: + return LINK_RATE_UHBR10; + case DP_TEST_LINK_RATE_UHBR20: + return LINK_RATE_UHBR20; + case DP_TEST_LINK_RATE_UHBR13_5: + return LINK_RATE_UHBR13_5; + default: + return LINK_RATE_UNKNOWN; + } +} + static void dp_test_send_link_training(struct dc_link *link) { struct dc_link_settings link_settings = {0}; + uint8_t test_rate = 0; core_link_read_dpcd( link, @@ -4097,8 +4120,9 @@ static void dp_test_send_link_training(struct dc_link *link) core_link_read_dpcd( link, DP_TEST_LINK_RATE, - (unsigned char *)(&link_settings.link_rate), + &test_rate, 1); + link_settings.link_rate = get_link_rate_from_test_link_rate(test_rate); /* Set preferred link settings */ link->verified_link_cap.lane_count = link_settings.lane_count; diff --git a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h index 7d4aa99525da..2c54b6e0498b 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h @@ -133,6 +133,16 @@ enum dp_link_encoding { DP_128b_132b_ENCODING = 2, }; +enum dp_test_link_rate { + DP_TEST_LINK_RATE_RBR = 0x06, + DP_TEST_LINK_RATE_HBR = 0x0A, + DP_TEST_LINK_RATE_HBR2 = 0x14, + DP_TEST_LINK_RATE_HBR3 = 0x1E, + DP_TEST_LINK_RATE_UHBR10 = 0x01, + DP_TEST_LINK_RATE_UHBR20 = 0x02, + DP_TEST_LINK_RATE_UHBR13_5 = 0x03, +}; + struct dc_link_settings { enum dc_lane_count lane_count; enum dc_link_rate link_rate; @@ -620,7 +630,7 @@ union test_request { uint8_t LINK_TEST_PATTRN :1; uint8_t EDID_READ :1; uint8_t PHY_TEST_PATTERN :1; - uint8_t RESERVED :1; + uint8_t PHY_TEST_CHANNEL_CODING_TYPE :2; uint8_t AUDIO_TEST_PATTERN :1; uint8_t TEST_AUDIO_DISABLED_VIDEO :1; } bits; |