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Add handler for read-back of USB audio volume levels.

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This commit is contained in:
hselasky 2014-08-05 18:35:34 +00:00
parent 222c2c3d80
commit 272d9252ab
1 changed files with 10 additions and 0 deletions
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10
sys/dev/usb/gadget/g_audio.c
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@ -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 */ )) {