[PATCH 1/1 v2] usb-audio: Add support for Denon DN-X1600

[Damien Zammit <damien@zamaudio.com>]

This provides support for Denon DN-X1600 hardware mixer.

The device itself supports 44100, 48000 and 96000 (Hz)
sample rates, but switching rates via software is currently not working.
Therefore, this patch hardcodes the sample rate to 48000Hz which
enables all 8 channels to function correctly when the correct
sample rate is selected on the hardware itself.

MIDI also tested and works.

Signed-off-by: Damien Zammit <damien@zamaudio.com>
Tested-by: xalmoxis@gmail.com
---
 sound/usb/clock.c        |  7 +++++
 sound/usb/quirks-table.h | 70 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)

diff --git a/sound/usb/clock.c b/sound/usb/clock.c
index 0afae839d..52de52288 100644
--- a/sound/usb/clock.c
+++ b/sound/usb/clock.c
@@ -534,6 +534,13 @@ static int set_sample_rate_v2v3(struct snd_usb_audio *chip,
 		 * rate.
 		 */
 		clock = snd_usb_clock_find_source(chip, fmt, false);
+
+		/* Denon DN-X1600 hardcoded
+		 * Sample rate seems to be set on the hardware itself
+		 */
+		if (chip->usb_id == USB_ID(0x154e, 0x500e))
+			return 0;
+
 		if (clock < 0)
 			return clock;
 	}
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index bdba37d0f..19bb499c1 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -3044,6 +3044,76 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
 	}
 },
 
+/* Denon DN-X1600 */
+{
+	USB_AUDIO_DEVICE(0x154e, 0x500e),
+	.driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
+		.vendor_name = "Denon",
+		.product_name = "DN-X1600",
+		.ifnum = QUIRK_ANY_INTERFACE,
+		.type = QUIRK_COMPOSITE,
+		.data = (const struct snd_usb_audio_quirk[]){
+			{
+				.ifnum = 0,
+				.type = QUIRK_IGNORE_INTERFACE,
+			},
+			{
+				.ifnum = 1,
+				.type = QUIRK_AUDIO_FIXED_ENDPOINT,
+				.data = &(const struct audioformat) {
+					.formats = SNDRV_PCM_FMTBIT_S24_3LE,
+					.channels = 8,
+					.iface = 1,
+					.altsetting = 1,
+					.altset_idx = 1,
+					.attributes = 0x0,
+					.endpoint = 0x01,
+					.ep_attr = USB_ENDPOINT_XFER_ISOC |
+						USB_ENDPOINT_SYNC_ADAPTIVE,
+					.maxpacksize = 0x138,
+					.rates = SNDRV_PCM_RATE_48000,
+					.rate_min = 48000,
+					.rate_max = 48000,
+					.nr_rates = 1,
+					.rate_table = (unsigned int[]) {
+						48000
+					}
+				}
+			},
+			{
+				.ifnum = 2,
+				.type = QUIRK_AUDIO_FIXED_ENDPOINT,
+				.data = &(const struct audioformat) {
+					.formats = SNDRV_PCM_FMTBIT_S24_3LE,
+					.channels = 8,
+					.iface = 2,
+					.altsetting = 1,
+					.altset_idx = 1,
+					.attributes = 0x0,
+					.endpoint = 0x85,
+					.ep_attr = USB_ENDPOINT_XFER_ISOC |
+						USB_ENDPOINT_SYNC_ADAPTIVE,
+					.maxpacksize = 0x138,
+					.rates = SNDRV_PCM_RATE_48000,
+					.rate_min = 48000,
+					.rate_max = 48000,
+					.nr_rates = 1,
+					.rate_table = (unsigned int[]) {
+						48000
+					}
+				}
+			},
+			{
+				.ifnum = 4,
+				.type = QUIRK_MIDI_STANDARD_INTERFACE,
+			},
+			{
+				.ifnum = -1
+			}
+		}
+	}
+},
+
 /* Microsoft XboxLive Headset/Xbox Communicator */
 {
 	USB_DEVICE(0x045e, 0x0283),
-- 
2.13.1