diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-03-08 23:26:26 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-03-15 23:47:05 +0200 |
| commit | 8c042949af1e935123140ab6e6a3dff945194a11 (patch) | |
| tree | 852980bfef7516762fb19e3b1e612ead3d98cc36 | |
| parent | 68070b76c4aac9369d7f84d802111ef83a7ff943 (diff) | |
drm/i915: Don't switch to TPS1 when disabling DP_TP_CTL
AFAICS Bspec has never asked us to switch to TPS1 when *disabling*
DP_TP_CTL. Let's stop doing that in case it confuses something.
We do have to switch before we *enable* DP_TP_CTL, but that
is already being handled correctly.
v2: Do the same for FDI
v3: Rebase
Reviewed-by: Imre Deak <imre.deak@intel.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230308212627.7601-1-ville.syrjala@linux.intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_fdi.c | 4 |
2 files changed, 3 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 0950bcfea4c0..c531fee888a4 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -2618,8 +2618,7 @@ static void intel_disable_ddi_buf(struct intel_encoder *encoder, if (intel_crtc_has_dp_encoder(crtc_state)) intel_de_rmw(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), - DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK, - DP_TP_CTL_LINK_TRAIN_PAT1); + DP_TP_CTL_ENABLE, 0); /* Disable FEC in DP Sink */ intel_ddi_disable_fec_state(encoder, crtc_state); @@ -3140,8 +3139,7 @@ static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp, wait = true; } - dp_tp_ctl &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); - dp_tp_ctl |= DP_TP_CTL_LINK_TRAIN_PAT1; + 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)); diff --git a/drivers/gpu/drm/i915/display/intel_fdi.c b/drivers/gpu/drm/i915/display/intel_fdi.c index f55b4893c00f..c08c26a321b3 100644 --- a/drivers/gpu/drm/i915/display/intel_fdi.c +++ b/drivers/gpu/drm/i915/display/intel_fdi.c @@ -845,9 +845,7 @@ void hsw_fdi_link_train(struct intel_encoder *encoder, intel_de_posting_read(dev_priv, DDI_BUF_CTL(PORT_E)); /* Disable DP_TP_CTL and FDI_RX_CTL and retry */ - intel_de_rmw(dev_priv, DP_TP_CTL(PORT_E), - DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK, - DP_TP_CTL_LINK_TRAIN_PAT1); + intel_de_rmw(dev_priv, DP_TP_CTL(PORT_E), DP_TP_CTL_ENABLE, 0); intel_de_posting_read(dev_priv, DP_TP_CTL(PORT_E)); intel_wait_ddi_buf_idle(dev_priv, PORT_E); |