diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c index 8527cce81c6f..8d8c84c81b34 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c @@ -118,7 +118,8 @@ static const struct link_encoder_funcs dce110_lnk_enc_funcs = { .enable_hpd = dce110_link_encoder_enable_hpd, .disable_hpd = dce110_link_encoder_disable_hpd, .is_dig_enabled = dce110_is_dig_enabled, - .destroy = dce110_link_encoder_destroy + .destroy = dce110_link_encoder_destroy, + .get_max_link_cap = dce110_link_encoder_get_max_link_cap }; static enum bp_result link_transmitter_control( @@ -1389,3 +1390,20 @@ void dce110_link_encoder_disable_hpd(struct link_encoder *enc) set_reg_field_value(value, 0, DC_HPD_CONTROL, DC_HPD_EN); } + +void dce110_link_encoder_get_max_link_cap(struct link_encoder *enc, + struct dc_link_settings *link_settings) +{ + /* 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 (enc->features.flags.bits.IS_HBR2_CAPABLE) + max_link_cap.link_rate = LINK_RATE_HIGH2; + + if (enc->features.flags.bits.IS_HBR3_CAPABLE) + max_link_cap.link_rate = LINK_RATE_HIGH3; + + *link_settings = max_link_cap; +} |