drm/i915: Track has_audio in the pipe config
Including state readout and cross-checking. This allows us to get rid
of crtc->eld_vld on hsw+. It also means that fastboot will be unhappy
if the BIOS hasn't set up the audio routing like we want it too.
Wrt fastboot and external screens I see a few options:
- Don't.
- Try to fix up eld, infoframes and audio settings after the fact. But
that means some pretty extensive reworking of our code which
currently does all this while the pipe/port is still off.
I won't bother with converting SDVO over to this because the audio
support for SDVO is very lacking:
- We don't update the eld.
- We don't update the audio state on the sdvo encoder.
- We don't check whether the platform can even feed audio to the sdvo
encoder.
I've converted hdmi, dp & ddi all in one go since ddi needs both hdmi
and dp converted and so doing it step-by-step would have required a
few intermediate hacks.
Reviewed-by: Naresh Kumar Kachhi <naresh.kumar.kachhi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index d3c239b0..79e045a 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -800,6 +800,7 @@
pipe_config->has_pch_encoder = true;
pipe_config->has_dp_encoder = true;
+ pipe_config->has_audio = intel_dp->has_audio;
if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) {
intel_fixed_panel_mode(intel_connector->panel.fixed_mode,
@@ -959,7 +960,7 @@
intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0;
intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count);
- if (intel_dp->has_audio) {
+ if (crtc->config.has_audio) {
DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n",
pipe_name(crtc->pipe));
intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE;
@@ -1506,8 +1507,11 @@
struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
int dotclock;
+ tmp = I915_READ(intel_dp->output_reg);
+ if (tmp & DP_AUDIO_OUTPUT_ENABLE)
+ pipe_config->has_audio = true;
+
if ((port == PORT_A) || !HAS_PCH_CPT(dev)) {
- tmp = I915_READ(intel_dp->output_reg);
if (tmp & DP_SYNC_HS_HIGH)
flags |= DRM_MODE_FLAG_PHSYNC;
else