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ALSA: hda - set up HDMI channels

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Set up channel information for HDMI widgets.  This will allow LPCM
with multiple channels supported on some HDMI devices.

TODO: It still doesn't check ELD and doesn't change PCM parameters
dynamically.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Takashi Iwai 2008-07-30 15:13:29 +02:00 committed by Jaroslav Kysela
parent c492060675
commit 862f76f86d
1 changed files with 37 additions and 8 deletions
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45
sound/pci/hda/patch_atihdmi.c
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@ -35,6 +35,9 @@ struct atihdmi_spec {
struct hda_pcm pcm_rec;
};
#define CVT_NID 0x02 /* audio converter */
#define PIN_NID 0x03 /* HDMI output pin */
static struct hda_verb atihdmi_basic_init[] = {
/* enable digital output on pin widget */
{ 0x03, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
@ -60,8 +63,9 @@ static int atihdmi_init(struct hda_codec *codec)
{
snd_hda_sequence_write(codec, atihdmi_basic_init);
/* SI codec requires to unmute the pin */
if (get_wcaps(codec, 0x03) & AC_WCAP_OUT_AMP)
snd_hda_codec_write(codec, 0x03, 0, AC_VERB_SET_AMP_GAIN_MUTE,
if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
snd_hda_codec_write(codec, PIN_NID, 0,
AC_VERB_SET_AMP_GAIN_MUTE,
AMP_OUT_UNMUTE);
return 0;
}
@ -92,15 +96,29 @@ static int atihdmi_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
struct snd_pcm_substream *substream)
{
struct atihdmi_spec *spec = codec->spec;
return snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
format, substream);
int chans = substream->runtime->channels;
int i, err;
err = snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
format, substream);
if (err < 0)
return err;
snd_hda_codec_write(codec, CVT_NID, 0, AC_VERB_SET_CVT_CHAN_COUNT,
chans - 1);
/* FIXME: XXX */
for (i = 0; i < chans; i++) {
snd_hda_codec_write(codec, CVT_NID, 0,
AC_VERB_SET_HDMI_CHAN_SLOT,
(i << 4) | i);
}
return 0;
}
static struct hda_pcm_stream atihdmi_pcm_digital_playback = {
.substreams = 1,
.channels_min = 2,
.channels_max = 2,
.nid = 0x2, /* NID to query formats and rates and setup streams */
.nid = CVT_NID, /* NID to query formats and rates and setup streams */
.ops = {
.open = atihdmi_dig_playback_pcm_open,
.close = atihdmi_dig_playback_pcm_close,
@ -112,6 +130,7 @@ static int atihdmi_build_pcms(struct hda_codec *codec)
{
struct atihdmi_spec *spec = codec->spec;
struct hda_pcm *info = &spec->pcm_rec;
unsigned int chans;
codec->num_pcms = 1;
codec->pcm_info = info;
@ -120,6 +139,13 @@ static int atihdmi_build_pcms(struct hda_codec *codec)
info->pcm_type = HDA_PCM_TYPE_HDMI;
info->stream[SNDRV_PCM_STREAM_PLAYBACK] = atihdmi_pcm_digital_playback;
/* FIXME: we must check ELD and change the PCM parameters dynamically
*/
chans = get_wcaps(codec, CVT_NID);
chans = (chans & AC_WCAP_CHAN_CNT_EXT) >> 13;
chans = ((chans << 1) | 1) + 1;
info->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max = chans;
return 0;
}
@ -147,9 +173,11 @@ static int patch_atihdmi(struct hda_codec *codec)
spec->multiout.num_dacs = 0; /* no analog */
spec->multiout.max_channels = 2;
spec->multiout.dig_out_nid = 0x2; /* NID for copying analog to digital,
* seems to be unused in pure-digital
* case. */
/* NID for copying analog to digital,
* seems to be unused in pure-digital
* case.
*/
spec->multiout.dig_out_nid = CVT_NID;
codec->patch_ops = atihdmi_patch_ops;
@ -164,6 +192,7 @@ struct hda_codec_preset snd_hda_preset_atihdmi[] = {
{ .id = 0x10027919, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },
{ .id = 0x1002791a, .name = "ATI RS690/780 HDMI", .patch = patch_atihdmi },
{ .id = 0x1002aa01, .name = "ATI R6xx HDMI", .patch = patch_atihdmi },
{ .id = 0x10951390, .name = "SiI1390 HDMI", .patch = patch_atihdmi },
{ .id = 0x10951392, .name = "SiI1392 HDMI", .patch = patch_atihdmi },
{ .id = 0x17e80047, .name = "Chrontel HDMI", .patch = patch_atihdmi },
{} /* terminator */