tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
authored by
Clemens Ladisch
and committed by
Takashi Iwai
4e9c58cb
5ae0095d
+10
+10
sound/pci/oxygen/oxygen_pcm.c
+10
sound/pci/oxygen/oxygen_pcm.c
···
29
29
/* the multichannel DMA channel has a 24-bit counter */
30
30
#define BUFFER_BYTES_MAX_MULTICH ((1 << 24) * 4)
31
31
32
+
#define FIFO_BYTES 256
33
+
#define FIFO_BYTES_MULTICH 1024
34
+
32
35
#define PERIOD_BYTES_MIN 64
33
36
34
37
#define DEFAULT_BUFFER_BYTES (BUFFER_BYTES_MAX / 2)
···
63
60
.period_bytes_max = BUFFER_BYTES_MAX,
64
61
.periods_min = 1,
65
62
.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
63
+
.fifo_size = FIFO_BYTES,
66
64
};
67
65
static const struct snd_pcm_hardware oxygen_multichannel_hardware = {
68
66
.info = SNDRV_PCM_INFO_MMAP |
···
91
87
.period_bytes_max = BUFFER_BYTES_MAX_MULTICH,
92
88
.periods_min = 1,
93
89
.periods_max = BUFFER_BYTES_MAX_MULTICH / PERIOD_BYTES_MIN,
90
+
.fifo_size = FIFO_BYTES_MULTICH,
94
91
};
95
92
static const struct snd_pcm_hardware oxygen_ac97_hardware = {
96
93
.info = SNDRV_PCM_INFO_MMAP |
···
111
106
.period_bytes_max = BUFFER_BYTES_MAX,
112
107
.periods_min = 1,
113
108
.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
109
+
.fifo_size = FIFO_BYTES,
114
110
};
115
111
116
112
static const struct snd_pcm_hardware *const oxygen_hardware[PCM_COUNT] = {
···
147
141
runtime->hw.rates &= ~(SNDRV_PCM_RATE_32000 |
148
142
SNDRV_PCM_RATE_64000);
149
143
runtime->hw.rate_min = 44100;
144
+
/* fall through */
145
+
case PCM_A:
146
+
case PCM_B:
147
+
runtime->hw.fifo_size = 0;
150
148
break;
151
149
case PCM_MULTICH:
152
150
runtime->hw.channels_max = chip->model.dac_channels_pcm;