406 строки
12 KiB
C
406 строки
12 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
//
|
|
// Special handling for implicit feedback mode
|
|
//
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/audio.h>
|
|
#include <linux/usb/audio-v2.h>
|
|
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
|
|
#include "usbaudio.h"
|
|
#include "card.h"
|
|
#include "helper.h"
|
|
#include "implicit.h"
|
|
|
|
enum {
|
|
IMPLICIT_FB_NONE,
|
|
IMPLICIT_FB_GENERIC,
|
|
IMPLICIT_FB_FIXED,
|
|
};
|
|
|
|
struct snd_usb_implicit_fb_match {
|
|
unsigned int id;
|
|
unsigned int iface_class;
|
|
unsigned int ep_num;
|
|
unsigned int iface;
|
|
int type;
|
|
};
|
|
|
|
#define IMPLICIT_FB_GENERIC_DEV(vend, prod) \
|
|
{ .id = USB_ID(vend, prod), .type = IMPLICIT_FB_GENERIC }
|
|
#define IMPLICIT_FB_FIXED_DEV(vend, prod, ep, ifnum) \
|
|
{ .id = USB_ID(vend, prod), .type = IMPLICIT_FB_FIXED, .ep_num = (ep),\
|
|
.iface = (ifnum) }
|
|
#define IMPLICIT_FB_SKIP_DEV(vend, prod) \
|
|
{ .id = USB_ID(vend, prod), .type = IMPLICIT_FB_NONE }
|
|
|
|
/* Implicit feedback quirk table for playback */
|
|
static const struct snd_usb_implicit_fb_match playback_implicit_fb_quirks[] = {
|
|
/* Generic matching */
|
|
IMPLICIT_FB_GENERIC_DEV(0x0499, 0x1509), /* Steinberg UR22 */
|
|
IMPLICIT_FB_GENERIC_DEV(0x0763, 0x2080), /* M-Audio FastTrack Ultra */
|
|
IMPLICIT_FB_GENERIC_DEV(0x0763, 0x2081), /* M-Audio FastTrack Ultra */
|
|
IMPLICIT_FB_GENERIC_DEV(0x0763, 0x2030), /* M-Audio Fast Track C400 */
|
|
IMPLICIT_FB_GENERIC_DEV(0x0763, 0x2031), /* M-Audio Fast Track C600 */
|
|
|
|
/* Fixed EP */
|
|
/* FIXME: check the availability of generic matching */
|
|
IMPLICIT_FB_FIXED_DEV(0x1397, 0x0001, 0x81, 1), /* Behringer UFX1604 */
|
|
IMPLICIT_FB_FIXED_DEV(0x1397, 0x0002, 0x81, 1), /* Behringer UFX1204 */
|
|
IMPLICIT_FB_FIXED_DEV(0x2466, 0x8010, 0x81, 2), /* Fractal Audio Axe-Fx III */
|
|
IMPLICIT_FB_FIXED_DEV(0x31e9, 0x0001, 0x81, 2), /* Solid State Logic SSL2 */
|
|
IMPLICIT_FB_FIXED_DEV(0x31e9, 0x0002, 0x81, 2), /* Solid State Logic SSL2+ */
|
|
IMPLICIT_FB_FIXED_DEV(0x0499, 0x172f, 0x81, 2), /* Steinberg UR22C */
|
|
IMPLICIT_FB_FIXED_DEV(0x0d9a, 0x00df, 0x81, 2), /* RTX6001 */
|
|
IMPLICIT_FB_FIXED_DEV(0x22f0, 0x0006, 0x81, 3), /* Allen&Heath Qu-16 */
|
|
IMPLICIT_FB_FIXED_DEV(0x2b73, 0x000a, 0x82, 0), /* Pioneer DJ DJM-900NXS2 */
|
|
IMPLICIT_FB_FIXED_DEV(0x2b73, 0x0017, 0x82, 0), /* Pioneer DJ DJM-250MK2 */
|
|
IMPLICIT_FB_FIXED_DEV(0x1686, 0xf029, 0x82, 2), /* Zoom UAC-2 */
|
|
IMPLICIT_FB_FIXED_DEV(0x2466, 0x8003, 0x86, 2), /* Fractal Audio Axe-Fx II */
|
|
IMPLICIT_FB_FIXED_DEV(0x0499, 0x172a, 0x86, 2), /* Yamaha MODX */
|
|
|
|
/* Special matching */
|
|
{ .id = USB_ID(0x07fd, 0x0004), .iface_class = USB_CLASS_AUDIO,
|
|
.type = IMPLICIT_FB_NONE }, /* MicroBook IIc */
|
|
/* ep = 0x84, ifnum = 0 */
|
|
{ .id = USB_ID(0x07fd, 0x0004), .iface_class = USB_CLASS_VENDOR_SPEC,
|
|
.type = IMPLICIT_FB_FIXED,
|
|
.ep_num = 0x84, .iface = 0 }, /* MOTU MicroBook II */
|
|
|
|
/* No quirk for playback but with capture quirk (see below) */
|
|
IMPLICIT_FB_SKIP_DEV(0x0582, 0x0130), /* BOSS BR-80 */
|
|
IMPLICIT_FB_SKIP_DEV(0x0582, 0x0189), /* BOSS GT-100v2 */
|
|
IMPLICIT_FB_SKIP_DEV(0x0582, 0x01d6), /* BOSS GT-1 */
|
|
IMPLICIT_FB_SKIP_DEV(0x0582, 0x01d8), /* BOSS Katana */
|
|
IMPLICIT_FB_SKIP_DEV(0x0582, 0x01e5), /* BOSS GT-001 */
|
|
|
|
{} /* terminator */
|
|
};
|
|
|
|
/* Implicit feedback quirk table for capture: only FIXED type */
|
|
static const struct snd_usb_implicit_fb_match capture_implicit_fb_quirks[] = {
|
|
IMPLICIT_FB_FIXED_DEV(0x0582, 0x0130, 0x0d, 0x01), /* BOSS BR-80 */
|
|
IMPLICIT_FB_FIXED_DEV(0x0582, 0x0189, 0x0d, 0x01), /* BOSS GT-100v2 */
|
|
IMPLICIT_FB_FIXED_DEV(0x0582, 0x01d6, 0x0d, 0x01), /* BOSS GT-1 */
|
|
IMPLICIT_FB_FIXED_DEV(0x0582, 0x01d8, 0x0d, 0x01), /* BOSS Katana */
|
|
IMPLICIT_FB_FIXED_DEV(0x0582, 0x01e5, 0x0d, 0x01), /* BOSS GT-001 */
|
|
|
|
{} /* terminator */
|
|
};
|
|
|
|
/* set up sync EP information on the audioformat */
|
|
static int add_implicit_fb_sync_ep(struct snd_usb_audio *chip,
|
|
struct audioformat *fmt,
|
|
int ep, int ifnum,
|
|
const struct usb_host_interface *alts)
|
|
{
|
|
struct usb_interface *iface;
|
|
|
|
if (!alts) {
|
|
iface = usb_ifnum_to_if(chip->dev, ifnum);
|
|
if (!iface || iface->num_altsetting < 2)
|
|
return 0;
|
|
alts = &iface->altsetting[1];
|
|
}
|
|
|
|
fmt->sync_ep = ep;
|
|
fmt->sync_iface = ifnum;
|
|
fmt->sync_altsetting = alts->desc.bAlternateSetting;
|
|
fmt->sync_ep_idx = 0;
|
|
fmt->implicit_fb = 1;
|
|
usb_audio_dbg(chip,
|
|
"%d:%d: added %s implicit_fb sync_ep %x, iface %d:%d\n",
|
|
fmt->iface, fmt->altsetting,
|
|
(ep & USB_DIR_IN) ? "playback" : "capture",
|
|
fmt->sync_ep, fmt->sync_iface, fmt->sync_altsetting);
|
|
return 1;
|
|
}
|
|
|
|
/* Check whether the given UAC2 iface:altset points to an implicit fb source */
|
|
static int add_generic_uac2_implicit_fb(struct snd_usb_audio *chip,
|
|
struct audioformat *fmt,
|
|
unsigned int ifnum,
|
|
unsigned int altsetting)
|
|
{
|
|
struct usb_host_interface *alts;
|
|
struct usb_endpoint_descriptor *epd;
|
|
|
|
alts = snd_usb_get_host_interface(chip, ifnum, altsetting);
|
|
if (!alts)
|
|
return 0;
|
|
if (alts->desc.bInterfaceClass != USB_CLASS_AUDIO ||
|
|
alts->desc.bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING ||
|
|
alts->desc.bInterfaceProtocol != UAC_VERSION_2 ||
|
|
alts->desc.bNumEndpoints < 1)
|
|
return 0;
|
|
epd = get_endpoint(alts, 0);
|
|
if (!usb_endpoint_is_isoc_in(epd) ||
|
|
(epd->bmAttributes & USB_ENDPOINT_USAGE_MASK) !=
|
|
USB_ENDPOINT_USAGE_IMPLICIT_FB)
|
|
return 0;
|
|
return add_implicit_fb_sync_ep(chip, fmt, epd->bEndpointAddress,
|
|
ifnum, alts);
|
|
}
|
|
|
|
/* Like the function above, but specific to Roland with vendor class and hack */
|
|
static int add_roland_implicit_fb(struct snd_usb_audio *chip,
|
|
struct audioformat *fmt,
|
|
unsigned int ifnum,
|
|
unsigned int altsetting)
|
|
{
|
|
struct usb_host_interface *alts;
|
|
struct usb_endpoint_descriptor *epd;
|
|
|
|
alts = snd_usb_get_host_interface(chip, ifnum, altsetting);
|
|
if (!alts)
|
|
return 0;
|
|
if (alts->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC ||
|
|
(alts->desc.bInterfaceSubClass != 2 &&
|
|
alts->desc.bInterfaceProtocol != 2) ||
|
|
alts->desc.bNumEndpoints < 1)
|
|
return 0;
|
|
epd = get_endpoint(alts, 0);
|
|
if (!usb_endpoint_is_isoc_in(epd) ||
|
|
(epd->bmAttributes & USB_ENDPOINT_USAGE_MASK) !=
|
|
USB_ENDPOINT_USAGE_IMPLICIT_FB)
|
|
return 0;
|
|
return add_implicit_fb_sync_ep(chip, fmt, epd->bEndpointAddress,
|
|
ifnum, alts);
|
|
}
|
|
|
|
|
|
static int __add_generic_implicit_fb(struct snd_usb_audio *chip,
|
|
struct audioformat *fmt,
|
|
int iface, int altset)
|
|
{
|
|
struct usb_host_interface *alts;
|
|
struct usb_endpoint_descriptor *epd;
|
|
|
|
alts = snd_usb_get_host_interface(chip, iface, altset);
|
|
if (!alts)
|
|
return 0;
|
|
|
|
if ((alts->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC &&
|
|
alts->desc.bInterfaceClass != USB_CLASS_AUDIO) ||
|
|
alts->desc.bNumEndpoints < 1)
|
|
return 0;
|
|
epd = get_endpoint(alts, 0);
|
|
if (!usb_endpoint_is_isoc_in(epd) ||
|
|
(epd->bmAttributes & USB_ENDPOINT_SYNCTYPE) != USB_ENDPOINT_SYNC_ASYNC)
|
|
return 0;
|
|
return add_implicit_fb_sync_ep(chip, fmt, epd->bEndpointAddress,
|
|
iface, alts);
|
|
}
|
|
|
|
/* More generic quirk: look for the sync EP next to the data EP */
|
|
static int add_generic_implicit_fb(struct snd_usb_audio *chip,
|
|
struct audioformat *fmt,
|
|
struct usb_host_interface *alts)
|
|
{
|
|
if ((fmt->ep_attr & USB_ENDPOINT_SYNCTYPE) != USB_ENDPOINT_SYNC_ASYNC)
|
|
return 0;
|
|
|
|
if (__add_generic_implicit_fb(chip, fmt,
|
|
alts->desc.bInterfaceNumber + 1,
|
|
alts->desc.bAlternateSetting))
|
|
return 1;
|
|
return __add_generic_implicit_fb(chip, fmt,
|
|
alts->desc.bInterfaceNumber - 1,
|
|
alts->desc.bAlternateSetting);
|
|
}
|
|
|
|
static const struct snd_usb_implicit_fb_match *
|
|
find_implicit_fb_entry(struct snd_usb_audio *chip,
|
|
const struct snd_usb_implicit_fb_match *match,
|
|
const struct usb_host_interface *alts)
|
|
{
|
|
for (; match->id; match++)
|
|
if (match->id == chip->usb_id &&
|
|
(!match->iface_class ||
|
|
(alts->desc.bInterfaceClass == match->iface_class)))
|
|
return match;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Setup an implicit feedback endpoint from a quirk. Returns 0 if no quirk
|
|
* applies. Returns 1 if a quirk was found.
|
|
*/
|
|
static int audioformat_implicit_fb_quirk(struct snd_usb_audio *chip,
|
|
struct audioformat *fmt,
|
|
struct usb_host_interface *alts)
|
|
{
|
|
const struct snd_usb_implicit_fb_match *p;
|
|
unsigned int attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE;
|
|
|
|
p = find_implicit_fb_entry(chip, playback_implicit_fb_quirks, alts);
|
|
if (p) {
|
|
switch (p->type) {
|
|
case IMPLICIT_FB_GENERIC:
|
|
return add_generic_implicit_fb(chip, fmt, alts);
|
|
case IMPLICIT_FB_NONE:
|
|
return 0; /* No quirk */
|
|
case IMPLICIT_FB_FIXED:
|
|
return add_implicit_fb_sync_ep(chip, fmt, p->ep_num,
|
|
p->iface, NULL);
|
|
}
|
|
}
|
|
|
|
/* Generic UAC2 implicit feedback */
|
|
if (attr == USB_ENDPOINT_SYNC_ASYNC &&
|
|
alts->desc.bInterfaceClass == USB_CLASS_AUDIO &&
|
|
alts->desc.bInterfaceProtocol == UAC_VERSION_2 &&
|
|
alts->desc.bNumEndpoints == 1) {
|
|
if (add_generic_uac2_implicit_fb(chip, fmt,
|
|
alts->desc.bInterfaceNumber + 1,
|
|
alts->desc.bAlternateSetting))
|
|
return 1;
|
|
}
|
|
|
|
/* Roland/BOSS implicit feedback with vendor spec class */
|
|
if (attr == USB_ENDPOINT_SYNC_ASYNC &&
|
|
alts->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC &&
|
|
alts->desc.bInterfaceProtocol == 2 &&
|
|
alts->desc.bNumEndpoints == 1 &&
|
|
USB_ID_VENDOR(chip->usb_id) == 0x0582 /* Roland */) {
|
|
if (add_roland_implicit_fb(chip, fmt,
|
|
alts->desc.bInterfaceNumber + 1,
|
|
alts->desc.bAlternateSetting))
|
|
return 1;
|
|
}
|
|
|
|
/* Try the generic implicit fb if available */
|
|
if (chip->generic_implicit_fb)
|
|
return add_generic_implicit_fb(chip, fmt, alts);
|
|
|
|
/* No quirk */
|
|
return 0;
|
|
}
|
|
|
|
/* same for capture, but only handling FIXED entry */
|
|
static int audioformat_capture_quirk(struct snd_usb_audio *chip,
|
|
struct audioformat *fmt,
|
|
struct usb_host_interface *alts)
|
|
{
|
|
const struct snd_usb_implicit_fb_match *p;
|
|
|
|
p = find_implicit_fb_entry(chip, capture_implicit_fb_quirks, alts);
|
|
if (p && p->type == IMPLICIT_FB_FIXED)
|
|
return add_implicit_fb_sync_ep(chip, fmt, p->ep_num, p->iface,
|
|
NULL);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Parse altset and set up implicit feedback endpoint on the audioformat
|
|
*/
|
|
int snd_usb_parse_implicit_fb_quirk(struct snd_usb_audio *chip,
|
|
struct audioformat *fmt,
|
|
struct usb_host_interface *alts)
|
|
{
|
|
if (fmt->endpoint & USB_DIR_IN)
|
|
return audioformat_capture_quirk(chip, fmt, alts);
|
|
else
|
|
return audioformat_implicit_fb_quirk(chip, fmt, alts);
|
|
}
|
|
|
|
/*
|
|
* Return the score of matching two audioformats.
|
|
* Veto the audioformat if:
|
|
* - It has no channels for some reason.
|
|
* - Requested PCM format is not supported.
|
|
* - Requested sample rate is not supported.
|
|
*/
|
|
static int match_endpoint_audioformats(struct snd_usb_substream *subs,
|
|
const struct audioformat *fp,
|
|
int rate, int channels,
|
|
snd_pcm_format_t pcm_format)
|
|
{
|
|
int i, score;
|
|
|
|
if (fp->channels < 1)
|
|
return 0;
|
|
|
|
if (!(fp->formats & pcm_format_to_bits(pcm_format)))
|
|
return 0;
|
|
|
|
if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
|
|
if (rate < fp->rate_min || rate > fp->rate_max)
|
|
return 0;
|
|
} else {
|
|
for (i = 0; i < fp->nr_rates; i++) {
|
|
if (fp->rate_table[i] == rate)
|
|
break;
|
|
}
|
|
if (i >= fp->nr_rates)
|
|
return 0;
|
|
}
|
|
|
|
score = 1;
|
|
if (fp->channels == channels)
|
|
score++;
|
|
|
|
return score;
|
|
}
|
|
|
|
static struct snd_usb_substream *
|
|
find_matching_substream(struct snd_usb_audio *chip, int stream, int ep_num,
|
|
int fmt_type)
|
|
{
|
|
struct snd_usb_stream *as;
|
|
struct snd_usb_substream *subs;
|
|
|
|
list_for_each_entry(as, &chip->pcm_list, list) {
|
|
subs = &as->substream[stream];
|
|
if (as->fmt_type == fmt_type && subs->ep_num == ep_num)
|
|
return subs;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Return the audioformat that is suitable for the implicit fb
|
|
*/
|
|
const struct audioformat *
|
|
snd_usb_find_implicit_fb_sync_format(struct snd_usb_audio *chip,
|
|
const struct audioformat *target,
|
|
const struct snd_pcm_hw_params *params,
|
|
int stream)
|
|
{
|
|
struct snd_usb_substream *subs;
|
|
const struct audioformat *fp, *sync_fmt;
|
|
int score, high_score;
|
|
|
|
/* When sharing the same altset, use the original audioformat */
|
|
if (target->iface == target->sync_iface &&
|
|
target->altsetting == target->sync_altsetting)
|
|
return target;
|
|
|
|
subs = find_matching_substream(chip, stream, target->sync_ep,
|
|
target->fmt_type);
|
|
if (!subs)
|
|
return NULL;
|
|
|
|
sync_fmt = NULL;
|
|
high_score = 0;
|
|
list_for_each_entry(fp, &subs->fmt_list, list) {
|
|
score = match_endpoint_audioformats(subs, fp,
|
|
params_rate(params),
|
|
params_channels(params),
|
|
params_format(params));
|
|
if (score > high_score) {
|
|
sync_fmt = fp;
|
|
high_score = score;
|
|
}
|
|
}
|
|
|
|
return sync_fmt;
|
|
}
|
|
|