Author: mav
Date: Tue Jan 24 17:31:27 2012
New Revision: 230511
URL: http://svn.freebsd.org/changeset/base/230511
Log:
Enable High Bit Rate (HBR) Encoded Packet Type (EPT), if supported
(HDMI and HBR bits set) and needed (AC3 format used with 8 channels).
This should allow DTS-HD/TrueHD pass-through with rates above 6.144Mbps.
MFC after: 2 months
Sponsored by: iXsystems, Inc.
Modified:
head/sys/dev/sound/pci/hda/hdaa.c
Modified: head/sys/dev/sound/pci/hda/hdaa.c
==============================================================================
--- head/sys/dev/sound/pci/hda/hdaa.c Tue Jan 24 15:20:31 2012
(r230510)
+++ head/sys/dev/sound/pci/hda/hdaa.c Tue Jan 24 17:31:27 2012
(r230511)
@@ -1506,6 +1506,21 @@ hdaa_audio_setup(struct hdaa_chan *ch)
>> (k * 4)) & 0xf) << 4) | k));
}
+ /*
+ * Enable High Bit Rate (HBR) Encoded Packet Type
+ * (EPT), if supported and needed (8ch data).
+ */
+ if (HDA_PARAM_PIN_CAP_HDMI(wp->wclass.pin.cap) &&
+ HDA_PARAM_PIN_CAP_HBR(wp->wclass.pin.cap)) {
+ wp->wclass.pin.ctrl &=
+
~HDA_CMD_SET_PIN_WIDGET_CTRL_VREF_ENABLE_MASK;
+ if ((ch->fmt & AFMT_AC3) && (cchn == 8))
+ wp->wclass.pin.ctrl |= 0x03;
+ hda_command(ch->devinfo->dev,
+ HDA_CMD_SET_PIN_WIDGET_CTRL(0, nid,
+ wp->wclass.pin.ctrl));
+ }
+
/* Stop audio infoframe transmission. */
hda_command(ch->devinfo->dev,
HDA_CMD_SET_HDMI_DIP_INDEX(0, nid, 0x00));
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