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drm/i915/ddi: write ELD where it's supposed to be done

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The audio programming sequence states that the ELD must be written and
enabled after the pipe is ready. Indeed, this should clarify the
situation with

commit c79057922e
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Apr 16 16:56:09 2014 +0200

    drm/i915: Remove vblank wait from haswell_write_eld

and Ville's review of it [1].

Moreover, we should not touch the relevant registers before we get the
audio power domain.

[1] http://mid.gmane.org/20140416155309.GK18465@intel.com

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jani Nikula 2014-10-27 16:26:49 +02:00 • committed by Daniel Vetter
parent 6189b0369c
commit 2aa0de39fa
2 changed files with 2 additions and 11 deletions
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2
drivers/gpu/drm/i915/intel_audio.c
View file

@ -160,8 +160,6 @@ static void haswell_write_eld(struct drm_connector *connector,
I915_WRITE(aud_cntrl_st2, tmp);
POSTING_READ(aud_cntrl_st2);
assert_pipe_disabled(dev_priv, pipe);
/* Set ELD valid state */
tmp = I915_READ(aud_cntrl_st2);
DRM_DEBUG_DRIVER("HDMI audio: pin eld vld status=0x%08x\n", tmp);

11
drivers/gpu/drm/i915/intel_ddi.c
View file

@ -1120,15 +1120,6 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder)
enum port port = intel_ddi_get_encoder_port(intel_encoder);
int type = intel_encoder->type;
if (crtc->config.has_audio) {
DRM_DEBUG_DRIVER("Audio on pipe %c on DDI\n",
pipe_name(crtc->pipe));
/* write eld */
DRM_DEBUG_DRIVER("DDI audio: write eld information\n");
intel_write_eld(intel_encoder);
}
if (type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
intel_edp_panel_on(intel_dp);
@ -1225,6 +1216,8 @@ static void intel_enable_ddi(struct intel_encoder *intel_encoder)
if (intel_crtc->config.has_audio) {
intel_display_power_get(dev_priv, POWER_DOMAIN_AUDIO);
intel_write_eld(intel_encoder);
tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
tmp |= ((AUDIO_OUTPUT_ENABLE_A | AUDIO_ELD_VALID_A) << (pipe * 4));
I915_WRITE(HSW_AUD_PIN_ELD_CP_VLD, tmp);