提交 8aa940c8 编写于 作者: M Maarten Lankhorst

drm/i915: Add hardware readout for FEC

Readout the FEC state in encoder->get_config(), this will allow
us to ensure that we can correctly inherit the state from boot,
and that we set FEC during modeset.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190925082110.17439-2-maarten.lankhorst@linux.intel.comReviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
上级 ed06efb8
......@@ -4021,6 +4021,23 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
pipe_config->lane_count =
((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
intel_dp_get_m_n(intel_crtc, pipe_config);
if (INTEL_GEN(dev_priv) >= 11) {
i915_reg_t dp_tp_ctl;
if (IS_GEN(dev_priv, 11))
dp_tp_ctl = DP_TP_CTL(encoder->port);
else
dp_tp_ctl = TGL_DP_TP_CTL(pipe_config->cpu_transcoder);
pipe_config->fec_enable =
I915_READ(dp_tp_ctl) & DP_TP_CTL_FEC_ENABLE;
DRM_DEBUG_KMS("[ENCODER:%d:%s] Fec status: %u\n",
encoder->base.base.id, encoder->base.name,
pipe_config->fec_enable);
}
break;
case TRANS_DDI_MODE_SELECT_DP_MST:
pipe_config->output_types |= BIT(INTEL_OUTPUT_DP_MST);
......
......@@ -12836,6 +12836,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
PIPE_CONF_CHECK_BOOL(hdmi_scrambling);
PIPE_CONF_CHECK_BOOL(hdmi_high_tmds_clock_ratio);
PIPE_CONF_CHECK_BOOL(has_infoframe);
PIPE_CONF_CHECK_BOOL(fec_enable);
PIPE_CONF_CHECK_BOOL_INCOMPLETE(has_audio);
......
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