From 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:46:07 +0000
Subject: [PATCH] add audio
---
kernel/sound/usb/clock.c | 82 +++++++++++++++++++++++++++-------------
1 files changed, 55 insertions(+), 27 deletions(-)
diff --git a/kernel/sound/usb/clock.c b/kernel/sound/usb/clock.c
index d1455fb..13bebe9 100644
--- a/kernel/sound/usb/clock.c
+++ b/kernel/sound/usb/clock.c
@@ -1,20 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Clock domain and sample rate management functions
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
*/
#include <linux/bitops.h>
@@ -165,16 +151,15 @@
return ret;
}
-/*
- * Assume the clock is valid if clock source supports only one single sample
- * rate, the terminal is connected directly to it (there is no clock selector)
- * and clock type is internal. This is to deal with some Denon DJ controllers
- * that always reports that clock is invalid.
- */
static bool uac_clock_source_is_valid_quirk(struct snd_usb_audio *chip,
struct audioformat *fmt,
int source_id)
{
+ bool ret = false;
+ int count;
+ unsigned char data;
+ struct usb_device *dev = chip->dev;
+
if (fmt->protocol == UAC_VERSION_2) {
struct uac_clock_source_descriptor *cs_desc =
snd_usb_find_clock_source(chip->ctrl_intf, source_id);
@@ -182,13 +167,51 @@
if (!cs_desc)
return false;
- return (fmt->nr_rates == 1 &&
- (fmt->clock & 0xff) == cs_desc->bClockID &&
- (cs_desc->bmAttributes & 0x3) !=
- UAC_CLOCK_SOURCE_TYPE_EXT);
+ /*
+ * Assume the clock is valid if clock source supports only one
+ * single sample rate, the terminal is connected directly to it
+ * (there is no clock selector) and clock type is internal.
+ * This is to deal with some Denon DJ controllers that always
+ * reports that clock is invalid.
+ */
+ if (fmt->nr_rates == 1 &&
+ (fmt->clock & 0xff) == cs_desc->bClockID &&
+ (cs_desc->bmAttributes & 0x3) !=
+ UAC_CLOCK_SOURCE_TYPE_EXT)
+ return true;
}
- return false;
+ /*
+ * MOTU MicroBook IIc
+ * Sample rate changes takes more than 2 seconds for this device. Clock
+ * validity request returns false during that period.
+ */
+ if (chip->usb_id == USB_ID(0x07fd, 0x0004)) {
+ count = 0;
+
+ while ((!ret) && (count < 50)) {
+ int err;
+
+ msleep(100);
+
+ err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
+ USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
+ UAC2_CS_CONTROL_CLOCK_VALID << 8,
+ snd_usb_ctrl_intf(chip) | (source_id << 8),
+ &data, sizeof(data));
+ if (err < 0) {
+ dev_warn(&dev->dev,
+ "%s(): cannot get clock validity for id %d\n",
+ __func__, source_id);
+ return false;
+ }
+
+ ret = !!data;
+ count++;
+ }
+ }
+
+ return ret;
}
static bool uac_clock_source_is_valid(struct snd_usb_audio *chip,
@@ -641,8 +664,13 @@
* interface is active. */
if (rate != prev_rate) {
usb_set_interface(dev, iface, 0);
+
+ snd_vendor_set_interface(dev, alts, iface, 0);
+
snd_usb_set_interface_quirk(dev);
usb_set_interface(dev, iface, fmt->altsetting);
+
+ snd_vendor_set_interface(dev, alts, iface, fmt->altsetting);
snd_usb_set_interface_quirk(dev);
}
@@ -669,7 +697,7 @@
else
return 0;
}
- /* fall through */
+ fallthrough;
case UAC_VERSION_2:
return set_sample_rate_v2v3(chip, iface, alts, fmt, rate);
}
--
Gitblit v1.6.2