ALSA: ca0106: Define channel maps

Provide channel maps for individual stereo streams of CA0106.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/ca0106/ca0106_main.c b/sound/pci/ca0106/ca0106_main.c
index fc6787699ba92bbb5fb608c6a685592f764661ee..65c55910566b24eb5dda03445a0e50f0f848bfe5 100644 (file)
--- 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;