[PATCH 3/4] ALSA: usb-audio: Configure Pioneer DJM-850 samplerate

[Nicolas MURE]

Send an `URB_CONTROL out` USB frame to the device to configure its
samplerate. This should be done before using the device for audio
streaming (capture or playback).

About the change of `usb_rcvctrlpipe` to `usb_sndctrlpipe`, I reached
the author of this line and she agrees about this change. Control frames
to set device options should have the `out` direction instead of the `in`
direction.

See https://github.com/nm2107/Pioneer-DJM-850-driver-reverse-engineering
    /blob/172fb9a61055960c88c67b7c416fe5bf3609807b
    /doc/windows-dvs/framerate-setting/README.md

Signed-off-by: Nicolas MURE <nicolas.mure2019 at gmail.com>
---
 sound/usb/quirks.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 9ba4682ebc48..d02dac5fcd40 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1482,7 +1482,7 @@ static int pioneer_djm_set_format_quirk(struct snd_usb_substream *subs,
 	usb_set_interface(subs->dev, 0, 1);
 	// we should derive windex from fmt-sync_ep but it's not set
 	snd_usb_ctl_msg(subs->stream->chip->dev,
-		usb_rcvctrlpipe(subs->stream->chip->dev, 0),
+		usb_sndctrlpipe(subs->stream->chip->dev, 0),
 		0x01, 0x22, 0x0100, windex, &sr, 0x0003);
 	return 0;
 }
@@ -1503,6 +1503,9 @@ void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
 	case USB_ID(0x2b73, 0x0013): /* Pioneer DJM-450 */
 		pioneer_djm_set_format_quirk(subs, 0x0082);
 		break;
+	case USB_ID(0x08e4, 0x0163): /* Pioneer DJM-850 */
+		pioneer_djm_set_format_quirk(subs, 0x0086);
+		break;
 	}
 }
 
-- 
2.29.2