[PATCH v4 4/5] ALSA: usb-audio: Annotate the endpoint index in audioformat

[Takashi Iwai]

There are devices that have multiple endpoints sharing the same
iface/altset not only for sync but also for the actual streams, and
the audioformat for such an endpoint needs to be handled with the
proper endpoint index; otherwise it confuses the endpoint management.

This patch extends the audioformat to annotate the endpoint index, and
put the proper ep_idx=1 to Pioneer device quirk entries accordingly.

Fixes: bf6313a0ff76 ("ALSA: usb-audio: Refactor endpoint management")
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/usb/card.h         | 1 +
 sound/usb/endpoint.c     | 2 +-
 sound/usb/quirks-table.h | 6 ++++++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/sound/usb/card.h b/sound/usb/card.h
index de0d2aa883fa..37091b117614 100644
--- a/sound/usb/card.h
+++ b/sound/usb/card.h
@@ -18,6 +18,7 @@ struct audioformat {
 	unsigned int frame_size;	/* samples per frame for non-audio */
 	unsigned char iface;		/* interface number */
 	unsigned char altsetting;	/* corresponding alternate setting */
+	unsigned char ep_idx;		/* endpoint array index */
 	unsigned char altset_idx;	/* array index of altenate setting */
 	unsigned char attributes;	/* corresponding attributes of cs endpoint */
 	unsigned char endpoint;		/* endpoint */
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index ae6276aded91..fe73fe3ff2bc 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -683,7 +683,7 @@ snd_usb_endpoint_open(struct snd_usb_audio *chip,
 		} else {
 			ep->iface = fp->iface;
 			ep->altsetting = fp->altsetting;
-			ep->ep_idx = 0;
+			ep->ep_idx = fp->ep_idx;
 		}
 		usb_audio_dbg(chip, "Open EP 0x%x, iface=%d:%d, idx=%d\n",
 			      ep_num, ep->iface, ep->altsetting, ep->ep_idx);
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 0e11cb96fa8c..c8a4bdf18207 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -3362,6 +3362,7 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
 					.altsetting = 1,
 					.altset_idx = 1,
 					.endpoint = 0x86,
+					.ep_idx = 1,
 					.ep_attr = USB_ENDPOINT_XFER_ISOC|
 						 USB_ENDPOINT_SYNC_ASYNC|
 						 USB_ENDPOINT_USAGE_IMPLICIT_FB,
@@ -3450,6 +3451,7 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
 					.altsetting = 1,
 					.altset_idx = 1,
 					.endpoint = 0x82,
+					.ep_idx = 1,
 					.ep_attr = USB_ENDPOINT_XFER_ISOC|
 						USB_ENDPOINT_SYNC_ASYNC|
 						USB_ENDPOINT_USAGE_IMPLICIT_FB,
@@ -3506,6 +3508,7 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
 					.altsetting = 1,
 					.altset_idx = 1,
 					.endpoint = 0x82,
+					.ep_idx = 1,
 					.ep_attr = USB_ENDPOINT_XFER_ISOC|
 						 USB_ENDPOINT_SYNC_ASYNC|
 						 USB_ENDPOINT_USAGE_IMPLICIT_FB,
@@ -3562,6 +3565,7 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
 					.altsetting = 1,
 					.altset_idx = 1,
 					.endpoint = 0x82,
+					.ep_idx = 1,
 					.ep_attr = USB_ENDPOINT_XFER_ISOC|
 						 USB_ENDPOINT_SYNC_ASYNC|
 						 USB_ENDPOINT_USAGE_IMPLICIT_FB,
@@ -3619,6 +3623,7 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
 					.altsetting = 1,
 					.altset_idx = 1,
 					.endpoint = 0x82,
+					.ep_idx = 1,
 					.ep_attr = USB_ENDPOINT_XFER_ISOC|
 						USB_ENDPOINT_SYNC_ASYNC|
 					USB_ENDPOINT_USAGE_IMPLICIT_FB,
@@ -3679,6 +3684,7 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
 					.altsetting = 1,
 					.altset_idx = 1,
 					.endpoint = 0x82,
+					.ep_idx = 1,
 					.ep_attr = USB_ENDPOINT_XFER_ISOC|
 					    USB_ENDPOINT_SYNC_ASYNC|
 					    USB_ENDPOINT_USAGE_IMPLICIT_FB,
-- 
2.26.2