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[ALSA] Support multiple capture rates on p16v.

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EMU10K1/EMU10K2 driver
The capture rate does in fact vary, but it only captures anything if
the HD Capture source is set to I2S or AC97. I have not tested if the sound
is actually captured from an physical input of some type or not.
TODO: Get SPDIF capture working.

Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
This commit is contained in:
James Courtier-Dutton 2005-05-04 17:26:28 +02:00 committed by Jaroslav Kysela
parent 14c7e472aa
commit c702563703
1 changed files with 35 additions and 18 deletions
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53
sound/pci/emu10k1/p16v.c
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@ -133,25 +133,24 @@ static snd_pcm_hardware_t snd_p16v_playback_hw = {
};
static snd_pcm_hardware_t snd_p16v_capture_hw = {
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_S32_LE,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = (32*1024),
.period_bytes_min = 64,
.period_bytes_max = (16*1024),
.periods_min = 2,
.periods_max = 2,
.fifo_size = 0,
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_S32_LE,
.rates = SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
.rate_min = 44100,
.rate_max = 192000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = (32*1024),
.period_bytes_min = 64,
.period_bytes_max = (16*1024),
.periods_min = 2,
.periods_max = 2,
.fifo_size = 0,
};
static void snd_p16v_pcm_free_substream(snd_pcm_runtime_t *runtime)
{
emu10k1_pcm_t *epcm = runtime->private_data;
@ -362,7 +361,25 @@ static int snd_p16v_pcm_prepare_capture(snd_pcm_substream_t *substream)
emu10k1_t *emu = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
int channel = substream->pcm->device - emu->p16v_device_offset;
//printk("prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size, frames_to_bytes(runtime, 1));
u32 tmp;
//printk("prepare capture:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size, frames_to_bytes(runtime, 1));
tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
switch (runtime->rate) {
case 44100:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
break;
case 96000:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
break;
case 192000:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
break;
case 48000:
default:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
break;
}
/* FIXME: Check emu->buffer.size before actually writing to it. */
snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes