For real HDMI sink, CPT HDMI port has to set 'HDMI' mode flag in order to make HDMI audio work correctly.
This is required patch for drm/i915 to enable HDMI audio on CPT PCH, ALSA patch is at http://mailman.alsa-project.org/pipermail/alsa-devel/2010-May/027601.html Tested-by: Fengguang Wu <fengguang...@intel.com> Signed-off-by: Zhenyu Wang <zhen...@linux.intel.com> --- drivers/gpu/drm/i915/i915_reg.h | 3 +++ drivers/gpu/drm/i915/intel_hdmi.c | 5 ++++- 2 files changed, 7 insertions(+), 1 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index f3e39cc..fb8ffbe 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2690,6 +2690,9 @@ #define SDVO_ENCODING (0) #define TMDS_ENCODING (2 << 10) #define NULL_PACKET_VSYNC_ENABLE (1 << 9) +/* CPT */ +#define HDMI_MODE_SELECT (1 << 9) +#define DVI_MODE_SELECT (0) #define SDVOB_BORDER_ENABLE (1 << 7) #define AUDIO_ENABLE (1 << 6) #define VSYNC_ACTIVE_HIGH (1 << 4) diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 8a1c4ed..acaca07 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -59,8 +59,11 @@ static void intel_hdmi_mode_set(struct drm_encoder *encoder, SDVO_VSYNC_ACTIVE_HIGH | SDVO_HSYNC_ACTIVE_HIGH; - if (hdmi_priv->has_hdmi_sink) + if (hdmi_priv->has_hdmi_sink) { sdvox |= SDVO_AUDIO_ENABLE; + if (HAS_PCH_CPT(dev)) + sdvox |= HDMI_MODE_SELECT; + } if (intel_crtc->pipe == 1) { if (HAS_PCH_CPT(dev)) -- 1.7.0.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
