diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index f5fd106e555c..a0ff16bc18f5 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -2287,6 +2287,28 @@ static bool intel_dp_is_hdmi_2_1_sink(struct intel_dp *intel_dp) return false; } +static +int intel_dp_pcon_set_tmds_mode(struct intel_dp *intel_dp) +{ + int ret; + u8 buf = 0; + + /* Set PCON source control mode */ + buf |= DP_PCON_ENABLE_SOURCE_CTL_MODE; + + ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_PCON_HDMI_LINK_CONFIG_1, buf); + if (ret < 0) + return ret; + + /* Set HDMI LINK ENABLE */ + buf |= DP_PCON_ENABLE_HDMI_LINK; + ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_PCON_HDMI_LINK_CONFIG_1, buf); + if (ret < 0) + return ret; + + return 0; +} + void intel_dp_check_frl_training(struct intel_dp *intel_dp) { struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); @@ -2305,7 +2327,7 @@ void intel_dp_check_frl_training(struct intel_dp *intel_dp) int ret, mode; drm_dbg(&dev_priv->drm, "Couldn't set FRL mode, continuing with TMDS mode\n"); - ret = drm_dp_pcon_reset_frl_config(&intel_dp->aux); + ret = intel_dp_pcon_set_tmds_mode(intel_dp); mode = drm_dp_pcon_hdmi_link_mode(&intel_dp->aux, NULL); if (ret < 0 || mode != DP_PCON_HDMI_MODE_TMDS) |