From ea87d1c493aba9cf3f645eae0d6d9c0fd44d3189 Mon Sep 17 00:00:00 2001 From: Anssi Hannula Date: Tue, 3 Aug 2010 13:28:58 +0300 Subject: [PATCH] ALSA: hda - Add support for HDMI HBR passthrough Passing IEC 61937 encapsulated compressed audio at bitrates over 6.144 Mbps (i.e. more than a single 2-channel 16-bit 192kHz IEC 60958 link) over HDMI requires the use of HBR Audio Stream Packets instead of Audio Sample Packets. Enable HBR mode when the stream has 8 channels and the Non-PCM bit is set. If the audio converter is not connected to any HBR-capable pins, return -EINVAL in prepare(). Signed-off-by: Anssi Hannula Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.h | 3 +++ sound/pci/hda/patch_hdmi.c | 40 ++++++++++++++++++++++++++++++++- sound/pci/hda/patch_intelhdmi.c | 3 +-- sound/pci/hda/patch_nvhdmi.c | 3 +-- 4 files changed, 44 insertions(+), 5 deletions(-) diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 4797416aa3d..48b33671e72 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -364,6 +364,9 @@ enum { #define AC_DIG2_CC (0x7f<<0) /* Pin widget control - 8bit */ +#define AC_PINCTL_EPT (0x3<<0) +#define AC_PINCTL_EPT_NATIVE 0 +#define AC_PINCTL_EPT_HBR 3 #define AC_PINCTL_VREFEN (0x7<<0) #define AC_PINCTL_VREF_HIZ 0 /* Hi-Z */ #define AC_PINCTL_VREF_50 1 /* 50% */ diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 2fc53961054..8534792591f 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -698,11 +698,48 @@ static void hdmi_unsol_event(struct hda_codec *codec, unsigned int res) * Callbacks */ -static void hdmi_setup_stream(struct hda_codec *codec, hda_nid_t nid, +static int hdmi_setup_stream(struct hda_codec *codec, hda_nid_t nid, u32 stream_tag, int format) { + struct hdmi_spec *spec = codec->spec; int tag; int fmt; + int pinctl; + int new_pinctl = 0; + int i; + + for (i = 0; i < spec->num_pins; i++) { + if (spec->pin_cvt[i] != nid) + continue; + if (!(snd_hda_query_pin_caps(codec, spec->pin[i]) & AC_PINCAP_HBR)) + continue; + + pinctl = snd_hda_codec_read(codec, spec->pin[i], 0, + AC_VERB_GET_PIN_WIDGET_CONTROL, 0); + + new_pinctl = pinctl & ~AC_PINCTL_EPT; + /* Non-PCM, 8 channels */ + if ((format & 0x8000) && (format & 0x0f) == 7) + new_pinctl |= AC_PINCTL_EPT_HBR; + else + new_pinctl |= AC_PINCTL_EPT_NATIVE; + + snd_printdd("hdmi_setup_stream: " + "NID=0x%x, %spinctl=0x%x\n", + spec->pin[i], + pinctl == new_pinctl ? "" : "new-", + new_pinctl); + + if (pinctl != new_pinctl) + snd_hda_codec_write(codec, spec->pin[i], 0, + AC_VERB_SET_PIN_WIDGET_CONTROL, + new_pinctl); + } + + if ((format & 0x8000) && (format & 0x0f) == 7 && !new_pinctl) { + snd_printdd("hdmi_setup_stream: HBR is not supported\n"); + return -EINVAL; + } tag = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0) >> 4; fmt = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_STREAM_FORMAT, 0); @@ -722,6 +759,7 @@ static void hdmi_setup_stream(struct hda_codec *codec, hda_nid_t nid, if (fmt != format) snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, format); + return 0; } /* diff --git a/sound/pci/hda/patch_intelhdmi.c b/sound/pci/hda/patch_intelhdmi.c index b81d23e42ac..5972d5e7d01 100644 --- a/sound/pci/hda/patch_intelhdmi.c +++ b/sound/pci/hda/patch_intelhdmi.c @@ -66,8 +66,7 @@ static int intel_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, hdmi_setup_audio_infoframe(codec, hinfo->nid, substream); - hdmi_setup_stream(codec, hinfo->nid, stream_tag, format); - return 0; + return hdmi_setup_stream(codec, hinfo->nid, stream_tag, format); } static int intel_hdmi_playback_pcm_cleanup(struct hda_pcm_stream *hinfo, diff --git a/sound/pci/hda/patch_nvhdmi.c b/sound/pci/hda/patch_nvhdmi.c index b0652acee9b..a281836fd47 100644 --- a/sound/pci/hda/patch_nvhdmi.c +++ b/sound/pci/hda/patch_nvhdmi.c @@ -202,8 +202,7 @@ static int nvhdmi_dig_playback_pcm_prepare_8ch_89(struct hda_pcm_stream *hinfo, hdmi_setup_audio_infoframe(codec, hinfo->nid, substream); - hdmi_setup_stream(codec, hinfo->nid, stream_tag, format); - return 0; + return hdmi_setup_stream(codec, hinfo->nid, stream_tag, format); } static int nvhdmi_dig_playback_pcm_prepare_8ch(struct hda_pcm_stream *hinfo, -- 2.46.0