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authorTakashi Iwai <tiwai@suse.de>2012-09-12 15:52:09 +0200
committerTakashi Iwai <tiwai@suse.de>2012-09-12 15:52:09 +0200
commit21147f91f1be57c4cfc24e538e93c30636513ce8 (patch)
treef59298c3ef12900d487ddc50cf27bfad4166c9d6 /sound/pci/ca0106
parent1fe4d42e0e28c2c004b06dd590702604f47c2402 (diff)
downloadlinux-21147f91f1be57c4cfc24e538e93c30636513ce8.tar.bz2
ALSA: ca0106: Define channel maps
Provide channel maps for individual stereo streams of CA0106. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/ca0106')
-rw-r--r--sound/pci/ca0106/ca0106_main.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/sound/pci/ca0106/ca0106_main.c b/sound/pci/ca0106/ca0106_main.c
index fc6787699ba9..65c55910566b 100644
--- a/sound/pci/ca0106/ca0106_main.c
+++ b/sound/pci/ca0106/ca0106_main.c
@@ -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;