diff options
author | Ingo Molnar <mingo@kernel.org> | 2021-02-12 15:36:43 +0300 |
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committer | Ingo Molnar <mingo@kernel.org> | 2021-02-12 15:36:43 +0300 |
commit | a3251c1a36f595046bea03935ebe37a1e1f1f1d7 (patch) | |
tree | 14b51f8bf1d7e1bb35697cb4704255b51b15baa9 /drivers/gpu/drm/i915/display/intel_dp_link_training.c | |
parent | 72f40a2823d6e16229ab58b898c6f22044e5222f (diff) | |
parent | ab234a260b1f625b26cbefa93ca365b0ae66df33 (diff) | |
download | linux-a3251c1a36f595046bea03935ebe37a1e1f1f1d7.tar.xz |
Merge branch 'x86/paravirt' into x86/entry
Merge in the recent paravirt changes to resolve conflicts caused
by objtool annotations.
Conflicts:
arch/x86/xen/xen-asm.S
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp_link_training.c')
-rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_link_training.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c index 91d3979902d0..d8c6d7054d11 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c @@ -334,6 +334,27 @@ intel_dp_set_link_train(struct intel_dp *intel_dp, return drm_dp_dpcd_write(&intel_dp->aux, reg, buf, len) == len; } +void intel_dp_set_signal_levels(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state, + enum drm_dp_phy dp_phy) +{ + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + u8 train_set = intel_dp->train_set[0]; + char phy_name[10]; + + drm_dbg_kms(&dev_priv->drm, "Using vswing level %d%s, pre-emphasis level %d%s, at %s\n", + train_set & DP_TRAIN_VOLTAGE_SWING_MASK, + train_set & DP_TRAIN_MAX_SWING_REACHED ? " (max)" : "", + (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) >> + DP_TRAIN_PRE_EMPHASIS_SHIFT, + train_set & DP_TRAIN_MAX_PRE_EMPHASIS_REACHED ? + " (max)" : "", + intel_dp_phy_name(dp_phy, phy_name, sizeof(phy_name))); + + if (intel_dp_phy_is_downstream_of_source(intel_dp, dp_phy)) + intel_dp->set_signal_levels(intel_dp, crtc_state); +} + static bool intel_dp_reset_link_train(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state, @@ -341,7 +362,7 @@ intel_dp_reset_link_train(struct intel_dp *intel_dp, u8 dp_train_pat) { memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); - intel_dp_set_signal_levels(intel_dp, crtc_state); + intel_dp_set_signal_levels(intel_dp, crtc_state, dp_phy); return intel_dp_set_link_train(intel_dp, crtc_state, dp_phy, dp_train_pat); } @@ -355,7 +376,7 @@ intel_dp_update_link_train(struct intel_dp *intel_dp, DP_TRAINING_LANE0_SET_PHY_REPEATER(dp_phy); int ret; - intel_dp_set_signal_levels(intel_dp, crtc_state); + intel_dp_set_signal_levels(intel_dp, crtc_state, dp_phy); ret = drm_dp_dpcd_write(&intel_dp->aux, reg, intel_dp->train_set, crtc_state->lane_count); |