[PATCH AUTOSEL 5.15 25/28] ALSA: usb-audio: Add quirk for Fiero SC-01

[Sasha Levin]

From: Egor Vorontsov <sdoregor at sdore.me>

[ Upstream commit 4fb7c24f69c48fdc02ea7858dbd5a60ff08bf7e5 ]

Fiero SC-01 is a USB sound card with two mono inputs and a single
stereo output. The inputs are composed into a single stereo stream.

The device uses a vendor-provided driver on Windows and does not work
at all without it. The driver mostly provides ASIO functionality, but
also alters the way the sound card is queried for sample rates and
clocks.

ALSA queries those failing with an EPIPE (same as Windows 10 does).
Presumably, the vendor-provided driver does not query it at all, simply
matching by VID:PID. Thus, I consider this a buggy firmware and adhere
to a set of fixed endpoint quirks instead.

The soundcard has an internal clock. Implicit feedback mode is required
for the playback.

I have updated my device to v1.1.0 from a Windows 10 VM using a vendor-
provided binary prior to the development, hoping for it to just begin
working. The device provides no obvious way to downgrade the firmware,
and regardless, there's no binary available for v1.0.0 anyway.

Thus, I will be getting another unit to extend the patch with support
for that. Expected to be a simple copy-paste of the existing one,
though.

There were no previous reports of that device in context of Linux
anywhere. Other issues have been reported though, but that's out of the
scope.

Signed-off-by: Egor Vorontsov <sdoregor at sdore.me>
Link: https://lore.kernel.org/r/20220627100041.2861494-1-sdoregor@sdore.me
Signed-off-by: Takashi Iwai <tiwai at suse.de>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 sound/usb/quirks-table.h | 68 ++++++++++++++++++++++++++++++++++++++++
 sound/usb/quirks.c       |  2 ++
 2 files changed, 70 insertions(+)

diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 853da162fd18..7067d314fecd 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -4167,6 +4167,74 @@ YAMAHA_DEVICE(0x7010, "UB99"),
 		}
 	}
 },
+{
+	/*
+	 * Fiero SC-01 (firmware v1.1.0)
+	 */
+	USB_DEVICE(0x2b53, 0x0031),
+	.driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
+		.vendor_name = "Fiero",
+		.product_name = "SC-01",
+		.ifnum = QUIRK_ANY_INTERFACE,
+		.type = QUIRK_COMPOSITE,
+		.data = &(const struct snd_usb_audio_quirk[]) {
+			{
+				.ifnum = 0,
+				.type = QUIRK_AUDIO_STANDARD_INTERFACE
+			},
+			/* Playback */
+			{
+				.ifnum = 1,
+				.type = QUIRK_AUDIO_FIXED_ENDPOINT,
+				.data = &(const struct audioformat) {
+					.formats = SNDRV_PCM_FMTBIT_S32_LE,
+					.channels = 2,
+					.fmt_bits = 24,
+					.iface = 1,
+					.altsetting = 1,
+					.altset_idx = 1,
+					.endpoint = 0x01,
+					.ep_attr = USB_ENDPOINT_XFER_ISOC |
+						   USB_ENDPOINT_SYNC_ASYNC,
+					.rates = SNDRV_PCM_RATE_48000 |
+						 SNDRV_PCM_RATE_96000,
+					.rate_min = 48000,
+					.rate_max = 96000,
+					.nr_rates = 2,
+					.rate_table = (unsigned int[]) { 48000, 96000 },
+					.clock = 0x29
+				}
+			},
+			/* Capture */
+			{
+				.ifnum = 2,
+				.type = QUIRK_AUDIO_FIXED_ENDPOINT,
+				.data = &(const struct audioformat) {
+					.formats = SNDRV_PCM_FMTBIT_S32_LE,
+					.channels = 2,
+					.fmt_bits = 24,
+					.iface = 2,
+					.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_48000 |
+						 SNDRV_PCM_RATE_96000,
+					.rate_min = 48000,
+					.rate_max = 96000,
+					.nr_rates = 2,
+					.rate_table = (unsigned int[]) { 48000, 96000 },
+					.clock = 0x29
+				}
+			},
+			{
+				.ifnum = -1
+			}
+		}
+	}
+},
 
 #undef USB_DEVICE_VENDOR_SPEC
 #undef USB_AUDIO_DEVICE
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index a72874bc0936..d42a59609886 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1911,6 +1911,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_ALIGN_TRANSFER),
 	DEVICE_FLG(0x1224, 0x2a25, /* Jieli Technology USB PHY 2.0 */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
+	DEVICE_FLG(0x2b53, 0x0031, /* Fiero SC-01 (firmware v1.1.0) */
+		   QUIRK_FLAG_GENERIC_IMPLICIT_FB),
 
 	/* Vendor matches */
 	VENDOR_FLG(0x045e, /* MS Lifecam */
-- 
2.35.1