Commit e337bf19 authored by Hector Martin's avatar Hector Martin Committed by Takashi Iwai

ALSA: usb-audio: add quirk for MacroSilicon MS2109

These devices claim to be 96kHz mono, but actually are 48kHz stereo with
swapped channels and unaligned transfers.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarHector Martin <marcan@marcan.st>
Link: https://lore.kernel.org/r/20200702071433.237843-1-marcan@marcan.stSigned-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 781c90c0
...@@ -3633,4 +3633,56 @@ ALC1220_VB_DESKTOP(0x26ce, 0x0a01), /* Asrock TRX40 Creator */ ...@@ -3633,4 +3633,56 @@ ALC1220_VB_DESKTOP(0x26ce, 0x0a01), /* Asrock TRX40 Creator */
} }
}, },
/*
* MacroSilicon MS2109 based HDMI capture cards
*
* These claim 96kHz 1ch in the descriptors, but are actually 48kHz 2ch.
* They also need QUIRK_AUDIO_ALIGN_TRANSFER, which makes one wonder if
* they pretend to be 96kHz mono as a workaround for stereo being broken
* by that...
*
* They also have swapped L-R channels, but that's for userspace to deal
* with.
*/
{
USB_DEVICE(0x534d, 0x2109),
.driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
.vendor_name = "MacroSilicon",
.product_name = "MS2109",
.ifnum = QUIRK_ANY_INTERFACE,
.type = QUIRK_COMPOSITE,
.data = &(const struct snd_usb_audio_quirk[]) {
{
.ifnum = 2,
.type = QUIRK_AUDIO_ALIGN_TRANSFER,
},
{
.ifnum = 2,
.type = QUIRK_AUDIO_STANDARD_MIXER,
},
{
.ifnum = 3,
.type = QUIRK_AUDIO_FIXED_ENDPOINT,
.data = &(const struct audioformat) {
.formats = SNDRV_PCM_FMTBIT_S16_LE,
.channels = 2,
.iface = 3,
.altsetting = 1,
.altset_idx = 1,
.attributes = 0,
.endpoint = 0x82,
.ep_attr = USB_ENDPOINT_XFER_ISOC |
USB_ENDPOINT_SYNC_ASYNC,
.rates = SNDRV_PCM_RATE_CONTINUOUS,
.rate_min = 48000,
.rate_max = 48000,
}
},
{
.ifnum = -1
}
}
}
},
#undef USB_DEVICE_VENDOR_SPEC #undef USB_DEVICE_VENDOR_SPEC
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