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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>
This commit is contained in:
Clemens Ladisch 2014-09-21 22:52:46 +02:00 committed by Takashi Iwai
parent 5ae0095d00
commit 4e9c58cb12
1 changed files with 10 additions and 0 deletions
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10
sound/pci/oxygen/oxygen_pcm.c
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@ -29,6 +29,9 @@
/* the multichannel DMA channel has a 24-bit counter */ /* the multichannel DMA channel has a 24-bit counter */
#define BUFFER_BYTES_MAX_MULTICH ((1 << 24) * 4) #define BUFFER_BYTES_MAX_MULTICH ((1 << 24) * 4)
#define FIFO_BYTES 256
#define FIFO_BYTES_MULTICH 1024
#define PERIOD_BYTES_MIN 64 #define PERIOD_BYTES_MIN 64
#define DEFAULT_BUFFER_BYTES (BUFFER_BYTES_MAX / 2) #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, .period_bytes_max = BUFFER_BYTES_MAX,
.periods_min = 1, .periods_min = 1,
.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN, .periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
.fifo_size = FIFO_BYTES,
}; };
static const struct snd_pcm_hardware oxygen_multichannel_hardware = { static const struct snd_pcm_hardware oxygen_multichannel_hardware = {
.info = SNDRV_PCM_INFO_MMAP | .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, .period_bytes_max = BUFFER_BYTES_MAX_MULTICH,
.periods_min = 1, .periods_min = 1,
.periods_max = BUFFER_BYTES_MAX_MULTICH / PERIOD_BYTES_MIN, .periods_max = BUFFER_BYTES_MAX_MULTICH / PERIOD_BYTES_MIN,
.fifo_size = FIFO_BYTES_MULTICH,
}; };
static const struct snd_pcm_hardware oxygen_ac97_hardware = { static const struct snd_pcm_hardware oxygen_ac97_hardware = {
.info = SNDRV_PCM_INFO_MMAP | .info = SNDRV_PCM_INFO_MMAP |
@ -106,6 +111,7 @@ static const struct snd_pcm_hardware oxygen_ac97_hardware = {
.period_bytes_max = BUFFER_BYTES_MAX, .period_bytes_max = BUFFER_BYTES_MAX,
.periods_min = 1, .periods_min = 1,
.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN, .periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
.fifo_size = FIFO_BYTES,
}; };
static const struct snd_pcm_hardware *const oxygen_hardware[PCM_COUNT] = { 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 | runtime->hw.rates &= ~(SNDRV_PCM_RATE_32000 |
SNDRV_PCM_RATE_64000); SNDRV_PCM_RATE_64000);
runtime->hw.rate_min = 44100; runtime->hw.rate_min = 44100;
/* fall through */
case PCM_A:
case PCM_B:
runtime->hw.fifo_size = 0;
break; break;
case PCM_MULTICH: case PCM_MULTICH:
runtime->hw.channels_max = chip->model.dac_channels_pcm; runtime->hw.channels_max = chip->model.dac_channels_pcm;