From 8fed6193736bf22e0e44c03ee783761e9cc37238 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 19 Nov 2012 18:06:51 +0100 Subject: [PATCH] drm/i915: Enable DP audio for Haswell 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 Signed-off-by: Takashi Iwai Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_ddi.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 58f50eb..d706d53 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -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) { -- 2.7.4