diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-06-30 18:58:42 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-07-06 00:14:07 +0300 |
| commit | 9856308c94ca821fdc6f3440e4d4de069b09677c (patch) | |
| tree | d607f12100b20aba2a960da2816c201b8b25b150 | |
| parent | 4cca9676988f185112d5fc6fd1a2d942c2d4ef4d (diff) | |
drm/i915: Only populate aux_ch if really needed
Mixing VBT based AUX CH with platform defaults seems like
a recipe for conflicts. Let's only populate AUX CH if we
absolutely need it, that is only if we are dealing with
a DP output or a TC port (which need it due to some power
well shenanigans).
TODO: double check that real VBTs do in fact populate
the AUX CH for HDMI TC legacy ports...
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230630155846.29931-3-ville.syrjala@linux.intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/g4x_hdmi.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 12 |
2 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/g4x_hdmi.c b/drivers/gpu/drm/i915/display/g4x_hdmi.c index c1fd13bdc9d2..634b14116d9d 100644 --- a/drivers/gpu/drm/i915/display/g4x_hdmi.c +++ b/drivers/gpu/drm/i915/display/g4x_hdmi.c @@ -775,6 +775,5 @@ void g4x_hdmi_init(struct drm_i915_private *dev_priv, intel_infoframe_init(dig_port); - dig_port->aux_ch = intel_dp_aux_ch(intel_encoder); intel_hdmi_init_connector(dig_port, intel_connector); } diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 6cb24a472a9b..662b5ceef3c8 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -4676,6 +4676,14 @@ static bool port_strap_detected(struct drm_i915_private *i915, enum port port) } } +static bool need_aux_ch(struct intel_encoder *encoder, bool init_dp) +{ + struct drm_i915_private *i915 = to_i915(encoder->base.dev); + enum phy phy = intel_port_to_phy(i915, encoder->port); + + return init_dp || intel_phy_is_tc(i915, phy); +} + void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port) { struct intel_digital_port *dig_port; @@ -4929,7 +4937,9 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port) dig_port->dp.output_reg = INVALID_MMIO_REG; dig_port->max_lanes = intel_ddi_max_lanes(dig_port); - dig_port->aux_ch = intel_dp_aux_ch(encoder); + + if (need_aux_ch(encoder, init_dp)) + dig_port->aux_ch = intel_dp_aux_ch(encoder); if (intel_phy_is_tc(dev_priv, phy)) { bool is_legacy = |