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;