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ALSA: ca0106: Define channel maps

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Provide channel maps for individual stereo streams of CA0106.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-09-12 15:52:09 +02:00
parent 1fe4d42e0e
commit 21147f91f1
1 changed files with 28 additions and 0 deletions
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28
sound/pci/ca0106/ca0106_main.c
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@ -1334,10 +1334,29 @@ static irqreturn_t snd_ca0106_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
static const struct snd_pcm_chmap_elem surround_map[] = {
{ .channels = 2,
.map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
{ }
};
static const struct snd_pcm_chmap_elem clfe_map[] = {
{ .channels = 2,
.map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
{ }
};
static const struct snd_pcm_chmap_elem side_map[] = {
{ .channels = 2,
.map = { SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
{ }
};
static int __devinit snd_ca0106_pcm(struct snd_ca0106 *emu, int device)
{
struct snd_pcm *pcm;
struct snd_pcm_substream *substream;
const struct snd_pcm_chmap_elem *map = NULL;
int err;
err = snd_pcm_new(emu->card, "ca0106", device, 1, 1, &pcm);
@ -1350,18 +1369,22 @@ static int __devinit snd_ca0106_pcm(struct snd_ca0106 *emu, int device)
case 0:
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_front_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_0_ops);
map = snd_pcm_std_chmaps;
break;
case 1:
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_rear_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_1_ops);
map = surround_map;
break;
case 2:
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_center_lfe_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_2_ops);
map = clfe_map;
break;
case 3:
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_unknown_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_3_ops);
map = side_map;
break;
}
@ -1388,6 +1411,11 @@ static int __devinit snd_ca0106_pcm(struct snd_ca0106 *emu, int device)
return err;
}
err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, 2,
1 << 2, NULL);
if (err < 0)
return err;
emu->pcm[device] = pcm;
return 0;