From b46be727286a93056db851ababc85c0ac3f2f91c Mon Sep 17 00:00:00 2001 From: Timofei Bondarenko Date: Wed, 7 Nov 2007 15:50:52 +0100 Subject: [PATCH] [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 Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- sound/pci/cmipci.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/sound/pci/cmipci.c b/sound/pci/cmipci.c index d1f23ebed2..187203e55d 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, -- 2.39.5