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| author |   Matt Atwood <matthew.s.atwood@intel.com> | 2020-06-30 16:33:10 -0700 |
|---|---|---|
| committer |   José Roberto de Souza <jose.souza@intel.com> | 2020-07-01 16:24:45 -0700 |
| commit | 680c45c767f63e35f063d3ea04f388a9f7ae7079 (patch) | |
| tree | b4895bffbc4432384fce327240784caf044ecf5e | |
| parent | drm/i915: Fix g4x fbc watermark enable (diff) | |
| download | linux-dev-680c45c767f63e35f063d3ea04f388a9f7ae7079.tar.xz linux-dev-680c45c767f63e35f063d3ea04f388a9f7ae7079.zip | |
drm/i915/dp: Correctly advertise HBR3 for GEN11+
intel_dp_set_source_rates() calls intel_dp_is_edp(), which is unsafe to
use before encoder_type is set. This caused GEN11+ to incorrectly strip
HBR3 from source rates for edp. Move intel_dp_set_source_rates() to
after encoder_type is set. Add comment to intel_dp_is_edp() describing
unsafe usages.
v2: Alter intel_dp_set_source_rates final position (Ville/Manasi).
Remove outdated comment (Ville).
Slight optimization of control flow in intel_dp_init_connector.
Slight rewording in commit message.
Signed-off-by: Matt Atwood <matthew.s.atwood@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200630233310.10191-1-matthew.s.atwood@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 28 |
1 files changed, 11 insertions, 17 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 3df5d901dd9d..c9b93c5706af 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -137,6 +137,8 @@ static const u8 valid_dsc_slicecount[] = {1, 2, 4}; * * If a CPU or PCH DP output is attached to an eDP panel, this function * will return true, and false otherwise. + * + * This function is not safe to use prior to encoder type being set. */ bool intel_dp_is_edp(struct intel_dp *intel_dp) { @@ -8157,8 +8159,6 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port, intel_encoder->base.name)) return false; - intel_dp_set_source_rates(intel_dp); - intel_dp->reset_link_params = true; intel_dp->pps_pipe = INVALID_PIPE; intel_dp->active_pipe = INVALID_PIPE; @@ -8174,28 +8174,22 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port, */ drm_WARN_ON(dev, intel_phy_is_tc(dev_priv, phy)); type = DRM_MODE_CONNECTOR_eDP; + intel_encoder->type = INTEL_OUTPUT_EDP; + + /* eDP only on port B and/or C on vlv/chv */ + if (drm_WARN_ON(dev, (IS_VALLEYVIEW(dev_priv) || + IS_CHERRYVIEW(dev_priv)) && + port != PORT_B && port != PORT_C)) + return false; } else { type = DRM_MODE_CONNECTOR_DisplayPort; } + intel_dp_set_source_rates(intel_dp); + if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) intel_dp->active_pipe = vlv_active_pipe(intel_dp); - /* - * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but - * for DP the encoder type can be set by the caller to - * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. - */ - if (type == DRM_MODE_CONNECTOR_eDP) - intel_encoder->type = INTEL_OUTPUT_EDP; - - /* eDP only on port B and/or C on vlv/chv */ - if (drm_WARN_ON(dev, (IS_VALLEYVIEW(dev_priv) || - IS_CHERRYVIEW(dev_priv)) && - intel_dp_is_edp(intel_dp) && - port != PORT_B && port != PORT_C)) - return false; - drm_dbg_kms(&dev_priv->drm, "Adding %s connector on [ENCODER:%d:%s]\n", type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", |