Pioneer DJ DJM-900NXS2 is a widely used DJ mixer with 2 audio USB
interfaces. Both have a MIDI controller, 10 playback and 12 capture
channels. Audio endpoints are vendor-specific and 3 files need to be
patched. All playback and capture channels work fine with all supported
sample rates (44.1k, 48k, 96k). Patches are attached.
--
Kind regards,
Dmitry Panchenko
d-Systems Ltd
Lai 6, Tartu 51005, Estonia
www.d-systems.ee
--- /tmp/linux-5.4.0/sound/usb/pcm.c 2020-04-29 11:56:36.000000000 +0300
+++ linux-5.4.0/sound/usb/pcm.c 2020-04-29 12:01:31.916954625 +0300
@@ -355,6 +355,10 @@
case USB_ID(0x0582, 0x01d8): /* BOSS Katana */
/* BOSS Katana amplifiers do not need quirks */
return 0;
+ case USB_ID(0x2b73, 0x000a): /* Pioneer DJ DJM-900NXS2 */
+ ep = 0x82;
+ ifnum = 0;
+ goto add_sync_ep_from_ifnum;
}
if (attr == USB_ENDPOINT_SYNC_ASYNC &&
--- /tmp/linux-5.4.0/sound/usb/quirks.c 2020-04-29 11:56:36.000000000 +0300
+++ linux-5.4.0/sound/usb/quirks.c 2020-04-29 12:00:04.232521294 +0300
@@ -1414,6 +1414,29 @@
subs->pkt_offset_adj = (emu_samplerate_id >= EMU_QUIRK_SR_176400HZ) ? 4 : 0;
}
+
+/*
+ * Pioneer DJ DJM-900NXS2
+ * Device needs to know the sample rate when substream is started
+ */
+static int pioneer_djm_set_format_quirk (struct snd_usb_substream *subs)
+{
+
+ /* Convert sample rate to little endian */
+ u8 sr[3];
+ sr[0] = subs->cur_rate&0xff;
+ sr[1] = (subs->cur_rate>>8)&0xff;
+ sr[2] = (subs->cur_rate>>16)&0xff;
+
+ /* Configure device */
+ usb_set_interface(subs->stream->chip->dev, 0, 1);
+ snd_usb_ctl_msg(subs->stream->chip->dev,
+ usb_rcvctrlpipe(subs->stream->chip->dev, 0),
+ 0x01, 0x22, 0x0100, 0x0082, &sr, 0x0003);
+
+ return 0;
+}
+
void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
struct audioformat *fmt)
{
@@ -1424,6 +1447,8 @@
case USB_ID(0x041e, 0x3f19): /* E-Mu 0204 USB */
set_format_emu_quirk(subs, fmt);
break;
+ case USB_ID(0x2b73, 0x000a): /* Pioneer DJ DJM-900NXS2 */
+ pioneer_djm_set_format_quirk(subs);
}
}
--- /tmp/linux-5.4.0/sound/usb/quirks-table.h 2020-04-29 11:56:36.000000000 +0300
+++ linux-5.4.0/sound/usb/quirks-table.h 2020-04-29 11:58:22.921621970 +0300
@@ -3592,5 +3592,65 @@
}
}
},
+{
+ /*
+ * Pioneer DJ DJM-900NXS2
+ * 10 channels playback & 12 channels capture @ 44.1/48/96kHz S24LE
+ */
+ USB_DEVICE_VENDOR_SPEC(0x2b73, 0x000a),
+ .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
+ .ifnum = QUIRK_ANY_INTERFACE,
+ .type = QUIRK_COMPOSITE,
+ .data = (const struct snd_usb_audio_quirk[]) {
+ {
+ .ifnum = 0,
+ .type = QUIRK_AUDIO_FIXED_ENDPOINT,
+ .data = &(const struct audioformat) {
+ .formats = SNDRV_PCM_FMTBIT_S24_3LE,
+ .channels = 10,
+ .iface = 0,
+ .altsetting = 1,
+ .altset_idx = 1,
+ .endpoint = 0x01,
+ .ep_attr = USB_ENDPOINT_XFER_ISOC|
+ USB_ENDPOINT_SYNC_ASYNC|
+ USB_ENDPOINT_USAGE_IMPLICIT_FB,
+ .rates = SNDRV_PCM_RATE_44100|
+ SNDRV_PCM_RATE_48000|
+ SNDRV_PCM_RATE_96000,
+ .rate_min = 44100,
+ .rate_max = 96000,
+ .nr_rates = 3,
+ .rate_table = (unsigned int[]) { 44100, 48000, 96000 }
+ }
+ },
+ {
+ .ifnum = 0,
+ .type = QUIRK_AUDIO_FIXED_ENDPOINT,
+ .data = &(const struct audioformat) {
+ .formats = SNDRV_PCM_FMTBIT_S24_3LE,
+ .channels = 12,
+ .iface = 0,
+ .altsetting = 1,
+ .altset_idx = 1,
+ .endpoint = 0x82,
+ .ep_attr = USB_ENDPOINT_XFER_ISOC|
+ USB_ENDPOINT_SYNC_ASYNC|
+ USB_ENDPOINT_USAGE_IMPLICIT_FB,
+ .rates = SNDRV_PCM_RATE_44100|
+ SNDRV_PCM_RATE_48000|
+ SNDRV_PCM_RATE_96000,
+ .rate_min = 44100,
+ .rate_max = 96000,
+ .nr_rates = 3,
+ .rate_table = (unsigned int[]) { 44100, 48000, 96000 }
+ }
+ },
+ {
+ .ifnum = -1
+ }
+ }
+ }
+},
#undef USB_DEVICE_VENDOR_SPEC
