diff options
| author | Takashi Iwai <tiwai@suse.de> | 2012-09-12 15:52:09 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-09-12 15:52:09 +0200 |
| commit | 21147f91f1be57c4cfc24e538e93c30636513ce8 (patch) | |
| tree | f59298c3ef12900d487ddc50cf27bfad4166c9d6 | |
| parent | 1fe4d42e0e28c2c004b06dd590702604f47c2402 (diff) | |
ALSA: ca0106: Define channel maps
Provide channel maps for individual stereo streams of CA0106.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/pci/ca0106/ca0106_main.c | 28 |
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; |