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[ALSA] Add support of high-rate SPDIF output 

Modules: ICE1724 driver

Add support of SPDIF output with sample rates higher than 48kHz.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-10-12 10:04:42 +02:00 коммит произвёл Jaroslav Kysela
Родитель b709e57440
Коммит 2dfbeca9e9
1 изменённых файлов: 29 добавлений и 12 удалений
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41
sound/pci/ice1712/ice1724.c
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@ -675,9 +675,12 @@ static snd_pcm_hardware_t snd_vt1724_spdif =
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_SYNC_START),
.formats = SNDRV_PCM_FMTBIT_S32_LE,
.rates = SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000,
.rates = (SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100|
SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_88200|
SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_176400|
SNDRV_PCM_RATE_192000),
.rate_min = 32000,
.rate_max = 48000,
.rate_max = 192000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = (1UL << 18), /* 16bits dword */
@ -905,6 +908,10 @@ static void update_spdif_rate(ice1712_t *ice, unsigned int rate)
case 44100: break;
case 48000: nval |= 2 << 12; break;
case 32000: nval |= 3 << 12; break;
case 88200: nval |= 4 << 12; break;
case 96000: nval |= 5 << 12; break;
case 192000: nval |= 6 << 12; break;
case 176400: nval |= 7 << 12; break;
}
if (val != nval)
update_spdif_bits(ice, nval);
@ -1292,22 +1299,32 @@ static int snd_vt1724_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *
static unsigned int encode_spdif_bits(snd_aes_iec958_t *diga)
{
unsigned int val;
unsigned int val, rbits;
val = diga->status[0] & 0x03; /* professional, non-audio */
if (val & 0x01) {
/* professional */
if ((diga->status[0] & IEC958_AES0_PRO_EMPHASIS) == IEC958_AES0_PRO_EMPHASIS_5015)
val |= 1U << 3;
switch (diga->status[0] & IEC958_AES0_PRO_FS) {
case IEC958_AES0_PRO_FS_44100:
break;
case IEC958_AES0_PRO_FS_32000:
val |= 3U << 12;
break;
default:
val |= 2U << 12;
break;
rbits = (diga->status[4] >> 3) & 0x0f;
if (rbits) {
switch (rbits) {
case 2: val |= 5 << 12; break; /* 96k */
case 3: val |= 6 << 12; break; /* 192k */
case 10: val |= 4 << 12; break; /* 88.2k */
case 11: val |= 7 << 12; break; /* 176.4k */
}
} else {
switch (diga->status[0] & IEC958_AES0_PRO_FS) {
case IEC958_AES0_PRO_FS_44100:
break;
case IEC958_AES0_PRO_FS_32000:
val |= 3U << 12;
break;
default:
val |= 2U << 12;
break;
}
}
} else {
/* consumer */