diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_snps_phy.c | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 12 |
3 files changed, 24 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index e4260806c2a4..1cd394b0585e 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -4308,6 +4308,14 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port) return; } + if (intel_phy_is_snps(dev_priv, phy) && + dev_priv->snps_phy_failed_calibration & BIT(phy)) { + drm_dbg_kms(&dev_priv->drm, + "SNPS PHY %c failed to calibrate; output will not be used.\n", + phy_name(phy)); + return; + } + dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL); if (!dig_port) return; diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.c b/drivers/gpu/drm/i915/display/intel_snps_phy.c index 7e6245b97fed..0dd4775e8195 100644 --- a/drivers/gpu/drm/i915/display/intel_snps_phy.c +++ b/drivers/gpu/drm/i915/display/intel_snps_phy.c @@ -32,10 +32,14 @@ void intel_snps_phy_wait_for_calibration(struct drm_i915_private *i915) if (!intel_phy_is_snps(i915, phy)) continue; + /* + * If calibration does not complete successfully, we'll remember + * which phy was affected and skip setup of the corresponding + * output later. + */ if (intel_de_wait_for_clear(i915, DG2_PHY_MISC(phy), DG2_PHY_DP_TX_ACK_MASK, 25)) - drm_err(&i915->drm, "SNPS PHY %c failed to calibrate after 25ms.\n", - phy_name(phy)); + i915->snps_phy_failed_calibration |= BIT(phy); } } diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index e71dcd2701ca..5cfe69b30841 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -837,8 +837,16 @@ struct drm_i915_private { bool irq_enabled; - /* perform PHY state sanity checks? */ - bool chv_phy_assert[2]; + union { + /* perform PHY state sanity checks? */ + bool chv_phy_assert[2]; + + /* + * DG2: Mask of PHYs that were not calibrated by the firmware + * and should not be used. + */ + u8 snps_phy_failed_calibration; + }; bool ipc_enabled; |