[ALSA] ymfpci - make rear channel swap optional
Modules: YMFPCI driver
Added rear_swap module option / kernel parameter to configure the rear
channel swapping. Default value is enable to make the AC3 passthrough
working, but analog only users might revert the previous behaviour.
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/include/sound/ymfpci.h b/include/sound/ymfpci.h
index d567bfd..d41cda9 100644
--- a/include/sound/ymfpci.h
+++ b/include/sound/ymfpci.h
@@ -269,9 +269,10 @@
enum snd_ymfpci_pcm_type type;
struct snd_pcm_substream *substream;
struct snd_ymfpci_voice *voices[2]; /* playback only */
- unsigned int running: 1;
- unsigned int output_front: 1;
- unsigned int output_rear: 1;
+ unsigned int running: 1,
+ output_front: 1,
+ output_rear: 1,
+ swap_rear: 1;
unsigned int update_pcm_vol;
u32 period_size; /* cached from runtime->period_size */
u32 buffer_size; /* cached from runtime->buffer_size */
@@ -344,6 +345,7 @@
struct snd_kcontrol *spdif_pcm_ctl;
int mode_dup4ch;
int rear_opened;
+ int rear_swap;
int spdif_opened;
struct {
u16 left;
@@ -376,7 +378,7 @@
int snd_ymfpci_pcm2(struct snd_ymfpci *chip, int device, struct snd_pcm **rpcm);
int snd_ymfpci_pcm_spdif(struct snd_ymfpci *chip, int device, struct snd_pcm **rpcm);
int snd_ymfpci_pcm_4ch(struct snd_ymfpci *chip, int device, struct snd_pcm **rpcm);
-int snd_ymfpci_mixer(struct snd_ymfpci *chip, int rear_switch);
+int snd_ymfpci_mixer(struct snd_ymfpci *chip, int rear_switch, int rear_swap);
int snd_ymfpci_timer(struct snd_ymfpci *chip, int device);
#endif /* __SOUND_YMFPCI_H */