[ALSA] ymfpci: add per-voice volume controls

YMFPCI driver
Implements mixer controls for the volume of each playback substream of
the main PCM device.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/sound/ymfpci.h b/include/sound/ymfpci.h
index 4b570684a6a..9a3c1e6c820 100644
--- a/include/sound/ymfpci.h
+++ b/include/sound/ymfpci.h
@@ -295,6 +295,7 @@ struct _snd_ymfpci_pcm {
         unsigned int running: 1;
         unsigned int output_front: 1;
         unsigned int output_rear: 1;
+        unsigned int update_pcm_vol;
         u32 period_size;                /* cached from runtime->period_size */
         u32 buffer_size;                /* cached from runtime->buffer_size */
         u32 period_pos;
@@ -367,6 +368,11 @@ struct _snd_ymfpci {
         int mode_dup4ch;
         int rear_opened;
         int spdif_opened;
+        struct {
+                u16 left;
+                u16 right;
+                snd_kcontrol_t *ctl;
+        } pcm_mixer[32];
 
         spinlock_t reg_lock;
         spinlock_t voice_lock;