[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/sound/pci/ymfpci/ymfpci.c b/sound/pci/ymfpci/ymfpci.c
index dab9b83..db57ce9 100644
--- a/sound/pci/ymfpci/ymfpci.c
+++ b/sound/pci/ymfpci/ymfpci.c
@@ -49,6 +49,7 @@
static long joystick_port[SNDRV_CARDS];
#endif
static int rear_switch[SNDRV_CARDS];
+static int rear_swap[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = 1 };
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for the Yamaha DS-1 PCI soundcard.");
@@ -66,6 +67,8 @@
#endif
module_param_array(rear_switch, bool, NULL, 0444);
MODULE_PARM_DESC(rear_switch, "Enable shared rear/line-in switch");
+module_param_array(rear_swap, bool, NULL, 0444);
+MODULE_PARM_DESC(rear_swap, "Swap rear channels (must be enabled for correct IEC958 (S/PDIF)) output");
static struct pci_device_id snd_ymfpci_ids[] = {
{ 0x1073, 0x0004, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* YMF724 */
@@ -295,7 +298,7 @@
snd_card_free(card);
return err;
}
- if ((err = snd_ymfpci_mixer(chip, rear_switch[dev])) < 0) {
+ if ((err = snd_ymfpci_mixer(chip, rear_switch[dev], rear_swap[dev])) < 0) {
snd_card_free(card);
return err;
}