diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 24 |
1 files changed, 5 insertions, 19 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index bf1c16b496cd..5d008c04ca2d 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -3761,8 +3761,8 @@ static void mtl_ddi_prepare_link_retrain(struct intel_dp *intel_dp, * necessary disable and enable port */ dp_tp_ctl = intel_de_read(display, dp_tp_ctl_reg(encoder, crtc_state)); - if (dp_tp_ctl & DP_TP_CTL_ENABLE) - mtl_disable_ddi_buf(encoder, crtc_state); + + drm_WARN_ON(display->drm, dp_tp_ctl & DP_TP_CTL_ENABLE); /* 6.d Configure and enable DP_TP_CTL with link training pattern 1 selected */ dp_tp_ctl = DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_PAT1; @@ -3801,30 +3801,16 @@ static void mtl_ddi_prepare_link_retrain(struct intel_dp *intel_dp, static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state) { + struct intel_display *display = to_intel_display(intel_dp); struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); struct intel_encoder *encoder = &dig_port->base; struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); enum port port = encoder->port; - u32 dp_tp_ctl, ddi_buf_ctl; - bool wait = false; + u32 dp_tp_ctl; dp_tp_ctl = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state)); - if (dp_tp_ctl & DP_TP_CTL_ENABLE) { - ddi_buf_ctl = intel_de_read(dev_priv, DDI_BUF_CTL(port)); - if (ddi_buf_ctl & DDI_BUF_CTL_ENABLE) { - intel_de_write(dev_priv, DDI_BUF_CTL(port), - ddi_buf_ctl & ~DDI_BUF_CTL_ENABLE); - wait = true; - } - - dp_tp_ctl &= ~DP_TP_CTL_ENABLE; - intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), dp_tp_ctl); - intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state)); - - if (wait) - intel_wait_ddi_buf_idle(dev_priv, port); - } + drm_WARN_ON(display->drm, dp_tp_ctl & DP_TP_CTL_ENABLE); dp_tp_ctl = DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_PAT1; if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST) || |