[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>
diff --git a/sound/pci/emu10k1/p16v.c b/sound/pci/emu10k1/p16v.c
index 776761f..13f7e62 100644
--- a/sound/pci/emu10k1/p16v.c
+++ b/sound/pci/emu10k1/p16v.c
@@ -133,25 +133,24 @@
};
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 @@
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
