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drm/i915: Enable DP audio for Haswell

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This patch adds the missing code to send ELD for Haswell DisplayPort,
based on Xingchao's original patch.

A test was performed with HSW-D machine and NEC EA232Wmi DP monitor.

Cc: Xingchao Wang <xingchao.wang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Takashi Iwai 2012-11-19 18:06:51 +01:00 committed by Daniel Vetter
parent c9839303d1
commit 8fed619373
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/i915/intel_ddi.c
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@ -669,6 +669,15 @@ static void intel_ddi_mode_set(struct drm_encoder *encoder,
break;
}
if (intel_dp->has_audio) {
DRM_DEBUG_DRIVER("DP audio on pipe %c on DDI\n",
pipe_name(intel_crtc->pipe));
/* write eld */
DRM_DEBUG_DRIVER("DP audio: write eld information\n");
intel_write_eld(encoder, adjusted_mode);
}
intel_dp_init_link_config(intel_dp);
} else if (type == INTEL_OUTPUT_HDMI) {