[ALSA] Support multiple capture rates on p16v.
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>
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14c7e472aa
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c702563703
1 changed files with 35 additions and 18 deletions
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@ -133,25 +133,24 @@ static snd_pcm_hardware_t snd_p16v_playback_hw = {
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};
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static snd_pcm_hardware_t snd_p16v_capture_hw = {
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.info = (SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_MMAP_VALID),
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.formats = SNDRV_PCM_FMTBIT_S32_LE,
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.rates = SNDRV_PCM_RATE_48000,
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.rate_min = 48000,
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.rate_max = 48000,
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.channels_min = 2,
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.channels_max = 2,
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.buffer_bytes_max = (32*1024),
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.period_bytes_min = 64,
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.period_bytes_max = (16*1024),
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.periods_min = 2,
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.periods_max = 2,
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.fifo_size = 0,
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.info = (SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_MMAP_VALID),
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.formats = SNDRV_PCM_FMTBIT_S32_LE,
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.rates = SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
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.rate_min = 44100,
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.rate_max = 192000,
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.channels_min = 2,
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.channels_max = 2,
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.buffer_bytes_max = (32*1024),
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.period_bytes_min = 64,
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.period_bytes_max = (16*1024),
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.periods_min = 2,
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.periods_max = 2,
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.fifo_size = 0,
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};
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static void snd_p16v_pcm_free_substream(snd_pcm_runtime_t *runtime)
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{
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emu10k1_pcm_t *epcm = runtime->private_data;
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@ -362,7 +361,25 @@ static int snd_p16v_pcm_prepare_capture(snd_pcm_substream_t *substream)
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emu10k1_t *emu = snd_pcm_substream_chip(substream);
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snd_pcm_runtime_t *runtime = substream->runtime;
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int channel = substream->pcm->device - emu->p16v_device_offset;
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//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));
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u32 tmp;
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//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));
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tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
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switch (runtime->rate) {
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case 44100:
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snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
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break;
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case 96000:
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snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
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break;
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case 192000:
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snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
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break;
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case 48000:
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default:
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snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
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break;
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}
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/* FIXME: Check emu->buffer.size before actually writing to it. */
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snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
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snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
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snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
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