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authorTakashi Iwai <tiwai@suse.de>2012-09-12 16:14:37 +0200
committerTakashi Iwai <tiwai@suse.de>2012-09-12 16:14:37 +0200
commit0afdb8f2869610b7c2eb99d75ba8b9003b8e88d7 (patch)
tree4b3ce7af56ae27002b21aca315115365df5cb275 /sound/pci
parent7fb6861d62b24fd0056a52275e5f74db0ef66f88 (diff)
ALSA: ymfpci: Define channel maps
Provide channel maps for individual stereo streams of YMFPCI. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/ymfpci/ymfpci_main.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
index ee8b6366e48d..50b0804df904 100644
--- a/sound/pci/ymfpci/ymfpci_main.c
+++ b/sound/pci/ymfpci/ymfpci_main.c
@@ -1166,6 +1166,11 @@ int __devinit snd_ymfpci_pcm(struct snd_ymfpci *chip, int device, struct snd_pcm
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(chip->pci), 64*1024, 256*1024);
+ err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ snd_pcm_std_chmaps, 2, 0, NULL);
+ if (err < 0)
+ return err;
+
if (rpcm)
*rpcm = pcm;
return 0;
@@ -1257,6 +1262,14 @@ static struct snd_pcm_ops snd_ymfpci_playback_4ch_ops = {
.pointer = snd_ymfpci_playback_pointer,
};
+static const struct snd_pcm_chmap_elem surround_map[] = {
+ { .channels = 1,
+ .map = { SNDRV_CHMAP_UNKNOWN } },
+ { .channels = 2,
+ .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
+ { }
+};
+
int __devinit snd_ymfpci_pcm_4ch(struct snd_ymfpci *chip, int device, struct snd_pcm ** rpcm)
{
struct snd_pcm *pcm;
@@ -1278,6 +1291,11 @@ int __devinit snd_ymfpci_pcm_4ch(struct snd_ymfpci *chip, int device, struct snd
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(chip->pci), 64*1024, 256*1024);
+ err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ surround_map, 2, 0, NULL);
+ if (err < 0)
+ return err;
+
if (rpcm)
*rpcm = pcm;
return 0;