diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_dp.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_dp.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 8c0f9e36ff8e..7ad43c6b1db7 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -613,6 +613,18 @@ static bool radeon_dp_get_link_status(struct radeon_connector *radeon_connector, return true; } +bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector) +{ + u8 link_status[DP_LINK_STATUS_SIZE]; + struct radeon_connector_atom_dig *dig = radeon_connector->con_priv; + + if (!radeon_dp_get_link_status(radeon_connector, link_status)) + return false; + if (dp_channel_eq_ok(link_status, dig->dp_lane_count)) + return false; + return true; +} + struct radeon_dp_link_train_info { struct radeon_device *rdev; struct drm_encoder *encoder; @@ -627,6 +639,7 @@ struct radeon_dp_link_train_info { u8 train_set[4]; u8 link_status[DP_LINK_STATUS_SIZE]; u8 tries; + bool use_dpencoder; }; static void radeon_dp_update_vs_emph(struct radeon_dp_link_train_info *dp_info) @@ -646,7 +659,7 @@ static void radeon_dp_set_tp(struct radeon_dp_link_train_info *dp_info, int tp) int rtp = 0; /* set training pattern on the source */ - if (ASIC_IS_DCE4(dp_info->rdev)) { + if (ASIC_IS_DCE4(dp_info->rdev) || !dp_info->use_dpencoder) { switch (tp) { case DP_TRAINING_PATTERN_1: rtp = ATOM_ENCODER_CMD_DP_LINK_TRAINING_PATTERN1; @@ -706,7 +719,7 @@ static int radeon_dp_link_train_init(struct radeon_dp_link_train_info *dp_info) radeon_write_dpcd_reg(dp_info->radeon_connector, DP_LINK_BW_SET, tmp); /* start training on the source */ - if (ASIC_IS_DCE4(dp_info->rdev)) + if (ASIC_IS_DCE4(dp_info->rdev) || !dp_info->use_dpencoder) atombios_dig_encoder_setup(dp_info->encoder, ATOM_ENCODER_CMD_DP_LINK_TRAINING_START, 0); else @@ -731,7 +744,7 @@ static int radeon_dp_link_train_finish(struct radeon_dp_link_train_info *dp_info DP_TRAINING_PATTERN_DISABLE); /* disable the training pattern on the source */ - if (ASIC_IS_DCE4(dp_info->rdev)) + if (ASIC_IS_DCE4(dp_info->rdev) || !dp_info->use_dpencoder) atombios_dig_encoder_setup(dp_info->encoder, ATOM_ENCODER_CMD_DP_LINK_TRAINING_COMPLETE, 0); else @@ -869,7 +882,8 @@ void radeon_dp_link_train(struct drm_encoder *encoder, struct radeon_connector *radeon_connector; struct radeon_connector_atom_dig *dig_connector; struct radeon_dp_link_train_info dp_info; - u8 tmp; + int index; + u8 tmp, frev, crev; if (!radeon_encoder->enc_priv) return; @@ -884,6 +898,18 @@ void radeon_dp_link_train(struct drm_encoder *encoder, (dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_eDP)) return; + /* DPEncoderService newer than 1.1 can't program properly the + * training pattern. When facing such version use the + * DIGXEncoderControl (X== 1 | 2) + */ + dp_info.use_dpencoder = true; + index = GetIndexIntoMasterTable(COMMAND, DPEncoderService); + if (atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev)) { + if (crev > 1) { + dp_info.use_dpencoder = false; + } + } + dp_info.enc_id = 0; if (dig->dig_encoder) dp_info.enc_id |= ATOM_DP_CONFIG_DIG2_ENCODER; |