From 6f4ea2074ddf689ac6f892afa58515032dabf2e4 Mon Sep 17 00:00:00 2001
From: Gregor Pintar <grpintar@gmail.com>
Date: Mon, 20 Apr 2020 23:40:30 +0200
Subject: [PATCH] ALSA: usb-audio: Add quirk for Focusrite Scarlett 2i2
Git-commit: 6f4ea2074ddf689ac6f892afa58515032dabf2e4
Patch-mainline: v5.7-rc3
References: bsc#1051510
Force it to use asynchronous playback.
Same quirk has already been added for Focusrite Scarlett Solo (2nd gen)
with a commit 46f5710f0b88 ("ALSA: usb-audio: Add quirk for Focusrite
Scarlett Solo").
This also seems to prevent regular clicks when playing at 44100Hz
on Scarlett 2i2 (2nd gen). I did not notice any side effects.
Moved both quirks to snd_usb_audioformat_attributes_quirk() as suggested.
Signed-off-by: Gregor Pintar <grpintar@gmail.com>
Reviewed-by: Alexander Tsoy <alexander@tsoy.me>
Link: https://lore.kernel.org/r/20200420214030.2361-1-grpintar@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
sound/usb/quirks-table.h | 84 ------------------------------------------------
sound/usb/quirks.c | 13 ++++++++
2 files changed, 13 insertions(+), 84 deletions(-)
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 7598d6d6740c..a1df4c5b4f8c 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -2756,90 +2756,6 @@ YAMAHA_DEVICE(0x7010, "UB99"),
.type = QUIRK_MIDI_NOVATION
}
},
-{
- /*
- * Focusrite Scarlett Solo 2nd generation
- * Reports that playback should use Synch: Synchronous
- * while still providing a feedback endpoint. Synchronous causes
- * snapping on some sample rates.
- * Force it to use Synch: Asynchronous.
- */
- USB_DEVICE(0x1235, 0x8205),
- .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 = 1,
- .type = QUIRK_AUDIO_FIXED_ENDPOINT,
- .data = & (const struct audioformat) {
- .formats = SNDRV_PCM_FMTBIT_S32_LE,
- .channels = 2,
- .iface = 1,
- .altsetting = 1,
- .altset_idx = 1,
- .attributes = 0,
- .endpoint = 0x01,
- .ep_attr = USB_ENDPOINT_XFER_ISOC |
- USB_ENDPOINT_SYNC_ASYNC,
- .protocol = UAC_VERSION_2,
- .rates = SNDRV_PCM_RATE_44100 |
- SNDRV_PCM_RATE_48000 |
- SNDRV_PCM_RATE_88200 |
- SNDRV_PCM_RATE_96000 |
- SNDRV_PCM_RATE_176400 |
- SNDRV_PCM_RATE_192000,
- .rate_min = 44100,
- .rate_max = 192000,
- .nr_rates = 6,
- .rate_table = (unsigned int[]) {
- 44100, 48000, 88200,
- 96000, 176400, 192000
- },
- .clock = 41
- }
- },
- {
- .ifnum = 2,
- .type = QUIRK_AUDIO_FIXED_ENDPOINT,
- .data = & (const struct audioformat) {
- .formats = SNDRV_PCM_FMTBIT_S32_LE,
- .channels = 2,
- .iface = 2,
- .altsetting = 1,
- .altset_idx = 1,
- .attributes = 0,
- .endpoint = 0x82,
- .ep_attr = USB_ENDPOINT_XFER_ISOC |
- USB_ENDPOINT_SYNC_ASYNC |
- USB_ENDPOINT_USAGE_IMPLICIT_FB,
- .protocol = UAC_VERSION_2,
- .rates = SNDRV_PCM_RATE_44100 |
- SNDRV_PCM_RATE_48000 |
- SNDRV_PCM_RATE_88200 |
- SNDRV_PCM_RATE_96000 |
- SNDRV_PCM_RATE_176400 |
- SNDRV_PCM_RATE_192000,
- .rate_min = 44100,
- .rate_max = 192000,
- .nr_rates = 6,
- .rate_table = (unsigned int[]) {
- 44100, 48000, 88200,
- 96000, 176400, 192000
- },
- .clock = 41
- }
- },
- {
- .ifnum = 3,
- .type = QUIRK_IGNORE_INTERFACE
- },
- {
- .ifnum = -1
- }
- }
- }
-},
/* Access Music devices */
{
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index a8ece1701068..6c2dfd3bfcbf 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1806,6 +1806,19 @@ void snd_usb_audioformat_attributes_quirk(struct snd_usb_audio *chip,
*/
fp->attributes &= ~UAC_EP_CS_ATTR_FILL_MAX;
break;
+ case USB_ID(0x1235, 0x8202): /* Focusrite Scarlett 2i2 2nd gen */
+ case USB_ID(0x1235, 0x8205): /* Focusrite Scarlett Solo 2nd gen */
+ /*
+ * Reports that playback should use Synch: Synchronous
+ * while still providing a feedback endpoint.
+ * Synchronous causes snapping on some sample rates.
+ * Force it to use Synch: Asynchronous.
+ */
+ if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE;
+ fp->ep_attr |= USB_ENDPOINT_SYNC_ASYNC;
+ }
+ break;
}
}
--
2.16.4