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| author | Timofei Bondarenko <tim@ipi.ac.ru> | 2007-11-07 15:50:52 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2008-01-31 17:29:19 +0100 |
| commit | b46be727286a93056db851ababc85c0ac3f2f91c (patch) | |
| tree | e403cbfca286ccb92d885b28f824650515ac9b4d | |
| parent | feb77712b0e780f04507cdda0529088ff0f3286f (diff) | |
| download | talos-obmc-linux-b46be727286a93056db851ababc85c0ac3f2f91c.tar.gz talos-obmc-linux-b46be727286a93056db851ababc85c0ac3f2f91c.zip | |
[ALSA] cmipci - allow capture of raw spdif subframes
Enable capturing of raw 32bit IEC958_SUBFRAME.
The 24-bits PCM data can be obtained using iec958 plugin.
Known problem: captured stream may begin with either left or right
subframe. Since the iec958 plugin doesn't decode preamble it may swap
the channels sometime.
Signed-off-by: Timofei Bondarenko <tim@ipi.ac.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
| -rw-r--r-- | sound/pci/cmipci.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sound/pci/cmipci.c b/sound/pci/cmipci.c index d1f23ebed2ae..187203e55d39 100644 --- a/sound/pci/cmipci.c +++ b/sound/pci/cmipci.c @@ -1407,6 +1407,11 @@ static int snd_cmipci_capture_spdif_prepare(struct snd_pcm_substream *substream) else snd_cmipci_clear_bit(cm, CM_REG_CHFORMAT, CM_DBLSPDS); } + if (snd_pcm_format_width(substream->runtime->format) > 16) + snd_cmipci_set_bit(cm, CM_REG_MISC_CTRL, CM_SPD32SEL); + else + snd_cmipci_clear_bit(cm, CM_REG_MISC_CTRL, CM_SPD32SEL); + spin_unlock_irq(&cm->reg_lock); return snd_cmipci_pcm_prepare(cm, &cm->channel[CM_CH_CAPT], substream); @@ -1418,6 +1423,7 @@ static int snd_cmipci_capture_spdif_hw_free(struct snd_pcm_substream *subs) spin_lock_irq(&cm->reg_lock); snd_cmipci_clear_bit(cm, CM_REG_FUNCTRL1, CM_CAPTURE_SPDF); + snd_cmipci_clear_bit(cm, CM_REG_MISC_CTRL, CM_SPD32SEL); spin_unlock_irq(&cm->reg_lock); return snd_cmipci_hw_free(subs); @@ -1569,7 +1575,8 @@ static struct snd_pcm_hardware snd_cmipci_capture_spdif = .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_MMAP_VALID), - .formats = SNDRV_PCM_FMTBIT_S16_LE, + .formats = SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE, .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, .rate_min = 44100, .rate_max = 48000, |
