diff options
| author | Takashi Iwai <tiwai@suse.de> | 2012-09-12 15:52:47 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-09-12 15:52:47 +0200 |
| commit | 3adc497f98dd062bcf4d832c659a3d706ece5249 (patch) | |
| tree | dcb2405613ef3aba804037a14b2593e9a4444fa6 /sound/pci/emu10k1/emu10k1x.c | |
| parent | 21147f91f1be57c4cfc24e538e93c30636513ce8 (diff) | |
ALSA: emu10k1x: Define channel maps
Provide channel maps for individual stereo streams of emu10k1x.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/emu10k1/emu10k1x.c')
| -rw-r--r-- | sound/pci/emu10k1/emu10k1x.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/emu10k1x.c b/sound/pci/emu10k1/emu10k1x.c index 5c8978b2c4d9..556fd6f456e3 100644 --- a/sound/pci/emu10k1/emu10k1x.c +++ b/sound/pci/emu10k1/emu10k1x.c @@ -830,9 +830,22 @@ static irqreturn_t snd_emu10k1x_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 int __devinit snd_emu10k1x_pcm(struct emu10k1x *emu, int device, struct snd_pcm **rpcm) { struct snd_pcm *pcm; + const struct snd_pcm_chmap_elem *map = NULL; int err; int capture = 0; @@ -861,12 +874,15 @@ static int __devinit snd_emu10k1x_pcm(struct emu10k1x *emu, int device, struct s switch(device) { case 0: strcpy(pcm->name, "EMU10K1X Front"); + map = snd_pcm_std_chmaps; break; case 1: strcpy(pcm->name, "EMU10K1X Rear"); + map = surround_map; break; case 2: strcpy(pcm->name, "EMU10K1X Center/LFE"); + map = clfe_map; break; } emu->pcm = pcm; @@ -875,6 +891,11 @@ static int __devinit snd_emu10k1x_pcm(struct emu10k1x *emu, int device, struct s snd_dma_pci_data(emu->pci), 32*1024, 32*1024); + err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, 2, + 1 << 2, NULL); + if (err < 0) + return err; + if (rpcm) *rpcm = pcm; |