diff options
| author | Eliot Blennerhassett | 2011-12-22 13:38:33 +1300 |
|---|---|---|
| committer | Takashi Iwai | 2011-12-22 08:12:58 +0100 |
| commit | c382a5da5cda3e0d8a8f2e8809460285d0a7c1cb (patch) | |
| tree | fbfb3208ad1b616d9103330237117bd52c85f91e /sound | |
| parent | 40818b6242513676c8adf30811fb7877b02005fb (diff) | |
ALSA: asihpi - Low latency mode stream has fixed channel count.
Unlike other streams which support 1..max channels,
Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/asihpi/asihpi.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c index 1ba50e369296..44e6ef3e99cc 100644 --- a/sound/pci/asihpi/asihpi.c +++ b/sound/pci/asihpi/asihpi.c @@ -135,6 +135,8 @@ struct snd_card_asihpi { u16 update_interval_frames; u16 in_max_chans; u16 out_max_chans; + u16 in_min_chans; + u16 out_min_chans; }; /* Per stream data */ @@ -968,8 +970,6 @@ static void snd_card_asihpi_playback_format(struct snd_card_asihpi *asihpi, } static struct snd_pcm_hardware snd_card_asihpi_playback = { - .channels_min = 1, - .channels_max = 2, .buffer_bytes_max = BUFFER_BYTES_MAX, .period_bytes_min = PERIOD_BYTES_MIN, .period_bytes_max = BUFFER_BYTES_MAX / PERIODS_MIN, @@ -1013,6 +1013,7 @@ static int snd_card_asihpi_playback_open(struct snd_pcm_substream *substream) runtime->private_free = snd_card_asihpi_runtime_free; snd_card_asihpi_playback.channels_max = card->out_max_chans; + snd_card_asihpi_playback.channels_min = card->out_min_chans; /*?snd_card_asihpi_playback.period_bytes_min = card->out_max_chans * 4096; */ @@ -1150,8 +1151,6 @@ static void snd_card_asihpi_capture_format(struct snd_card_asihpi *asihpi, static struct snd_pcm_hardware snd_card_asihpi_capture = { - .channels_min = 1, - .channels_max = 2, .buffer_bytes_max = BUFFER_BYTES_MAX, .period_bytes_min = PERIOD_BYTES_MIN, .period_bytes_max = BUFFER_BYTES_MAX / PERIODS_MIN, @@ -1193,6 +1192,7 @@ static int snd_card_asihpi_capture_open(struct snd_pcm_substream *substream) runtime->private_free = snd_card_asihpi_runtime_free; snd_card_asihpi_capture.channels_max = card->in_max_chans; + snd_card_asihpi_capture.channels_min = card->in_min_chans; snd_card_asihpi_capture_format(card, dpcm->h_stream, &snd_card_asihpi_capture); snd_card_asihpi_pcm_samplerates(card, &snd_card_asihpi_capture); @@ -2883,6 +2883,15 @@ static int __devinit snd_asihpi_probe(struct pci_dev *pci_dev, asihpi->out_max_chans = 2; } + if (asihpi->out_max_chans > 2) { /* assume LL mode */ + asihpi->out_min_chans = asihpi->out_max_chans; + asihpi->in_min_chans = asihpi->in_max_chans; + asihpi->support_grouping = 0; + } else { + asihpi->out_min_chans = 1; + asihpi->in_min_chans = 1; + } + snd_printk(KERN_INFO "has dma:%d, grouping:%d, mrx:%d\n", asihpi->can_dma, asihpi->support_grouping, |