[ALSA] oxygen: make the number of analog output configurable

Add a field to struct oxygen_model to allow model drivers for cards with
less than eight output channels.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 6 insertions, 1 deletions

diff --git a/sound/pci/oxygen/oxygen_pcm.c b/sound/pci/oxygen/oxygen_pcm.c
index 2785660957d0..df1d0cae1dad 100644
--- a/sound/pci/oxygen/oxygen_pcm.c
+++ b/sound/pci/oxygen/oxygen_pcm.c
@@ -119,10 +119,15 @@ static int oxygen_open(struct snd_pcm_substream *substream,
 
         runtime->private_data = (void *)(uintptr_t)channel;
         runtime->hw = *oxygen_hardware[channel];
-        if (channel == PCM_C) {
+        switch (channel) {
+        case PCM_C:
                 runtime->hw.rates &= ~(SNDRV_PCM_RATE_32000 |
                                        SNDRV_PCM_RATE_64000);
                 runtime->hw.rate_min = 44100;
+                break;
+        case PCM_MULTICH:
+                runtime->hw.channels_max = chip->model->dac_channels;
+                break;
         }
         if (chip->model->pcm_hardware_filter)
                 chip->model->pcm_hardware_filter(channel, &runtime->hw);