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authorClemens Ladisch <clemens@ladisch.de>2014-09-22 00:52:46 +0400
committerTakashi Iwai <tiwai@suse.de>2014-09-22 10:57:01 +0400
commit4e9c58cb1219bcbcf6e698ed6541b275048bfa88 (patch)
tree6cb446fbb76f202714fb52bddfdc6acd380ac445
parent5ae0095d00d48be60b2e3cbdb79a35a7d796d96b (diff)
downloadlinux-4e9c58cb1219bcbcf6e698ed6541b275048bfa88.tar.xz
ALSA: oxygen: set fifo_size
Allow the driver to report the hardware FIFO size. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/pci/oxygen/oxygen_pcm.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/sound/pci/oxygen/oxygen_pcm.c b/sound/pci/oxygen/oxygen_pcm.c
index cc0bcd9f3350..02828240ba15 100644
--- a/sound/pci/oxygen/oxygen_pcm.c
+++ b/sound/pci/oxygen/oxygen_pcm.c
@@ -29,6 +29,9 @@
/* the multichannel DMA channel has a 24-bit counter */
#define BUFFER_BYTES_MAX_MULTICH ((1 << 24) * 4)
+#define FIFO_BYTES 256
+#define FIFO_BYTES_MULTICH 1024
+
#define PERIOD_BYTES_MIN 64
#define DEFAULT_BUFFER_BYTES (BUFFER_BYTES_MAX / 2)
@@ -60,6 +63,7 @@ static const struct snd_pcm_hardware oxygen_stereo_hardware = {
.period_bytes_max = BUFFER_BYTES_MAX,
.periods_min = 1,
.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
+ .fifo_size = FIFO_BYTES,
};
static const struct snd_pcm_hardware oxygen_multichannel_hardware = {
.info = SNDRV_PCM_INFO_MMAP |
@@ -87,6 +91,7 @@ static const struct snd_pcm_hardware oxygen_multichannel_hardware = {
.period_bytes_max = BUFFER_BYTES_MAX_MULTICH,
.periods_min = 1,
.periods_max = BUFFER_BYTES_MAX_MULTICH / PERIOD_BYTES_MIN,
+ .fifo_size = FIFO_BYTES_MULTICH,
};
static const struct snd_pcm_hardware oxygen_ac97_hardware = {
.info = SNDRV_PCM_INFO_MMAP |
@@ -106,6 +111,7 @@ static const struct snd_pcm_hardware oxygen_ac97_hardware = {
.period_bytes_max = BUFFER_BYTES_MAX,
.periods_min = 1,
.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
+ .fifo_size = FIFO_BYTES,
};
static const struct snd_pcm_hardware *const oxygen_hardware[PCM_COUNT] = {
@@ -141,6 +147,10 @@ static int oxygen_open(struct snd_pcm_substream *substream,
runtime->hw.rates &= ~(SNDRV_PCM_RATE_32000 |
SNDRV_PCM_RATE_64000);
runtime->hw.rate_min = 44100;
+ /* fall through */
+ case PCM_A:
+ case PCM_B:
+ runtime->hw.fifo_size = 0;
break;
case PCM_MULTICH:
runtime->hw.channels_max = chip->model.dac_channels_pcm;