Author: hselasky
Date: Tue Aug 5 18:35:34 2014
New Revision: 269602
URL: http://svnweb.freebsd.org/changeset/base/269602
Log:
Add handler for read-back of USB audio volume levels.
Modified:
head/sys/dev/usb/gadget/g_audio.c
Modified: head/sys/dev/usb/gadget/g_audio.c
==============================================================================
--- head/sys/dev/usb/gadget/g_audio.c Tue Aug 5 18:19:51 2014
(r269601)
+++ head/sys/dev/usb/gadget/g_audio.c Tue Aug 5 18:35:34 2014
(r269602)
@@ -587,6 +587,16 @@ g_audio_handle_request(device_t dev,
*plen = 0;
}
return (0);
+ } else if ((req->bmRequestType == UT_READ_CLASS_INTERFACE) &&
+ (req->bRequest == 0x81 /* get value */ )) {
+
+ if (offset == 0) {
+ *plen = sizeof(sc->sc_volume_setting);
+ *pptr = &sc->sc_volume_setting;
+ } else {
+ *plen = 0;
+ }
+ return (0);
} else if ((req->bmRequestType == UT_WRITE_CLASS_INTERFACE) &&
(req->bRequest == 0x01 /* set value */ )) {
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