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316791b556
Through the examinations and experiments with lots of Roland and BOSS
USB-audio devices, we found out that the recently introduced
full-duplex operations with the implicit feedback mode work fine for
quite a few devices, while the others need only the capture-side quirk
to enforce the full-duplex mode. The recent commit d86f43b17e
("ALSA: usb-audio: Add support for many Roland devices' implicit
feedback quirks") tried to add such quirk entries manually in the
lists, but this turned out to be too many and error-prone, hence it
was reverted again.
This patch is another attempt to cover those missing Roland/BOSS
devices but in a more generic way. It matches the devices with the
vendor ID 0x0582, and checks whether they are with both ASYNC sync
types or ASYNC is only for capture device. In the former case, it's
the device with the implicit feedback mode, and applies accordingly.
In both cases, the capture stream requires always the full-duplex
mode, and we apply the known capture quirk for that, too.
Basically the already existing BOSS device quirk entries become
redundant after this generic matching, so those are removed. Although
the capture_implicit_fb_quirks[] table became empty and superfluous, I
keep it for now, so that people can put a special device easily at any
time later again.
Link: https://lore.kernel.org/r/CAOsVg8rA61B=005_VyUwpw3piVwA7Bo5fs1GYEB054efyzGjLw@mail.gmail.com
Link: https://lore.kernel.org/r/20210414083255.9527-1-tiwai@suse.de
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212519
Tested-by: Lucas Endres <jaffa225man@gmail.com>
Link: https://lore.kernel.org/r/20210422120413.457-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
491 lines
15 KiB
C
491 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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//
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// Special handling for implicit feedback mode
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//
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#include <linux/init.h>
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#include <linux/usb.h>
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#include <linux/usb/audio.h>
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#include <linux/usb/audio-v2.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include "usbaudio.h"
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#include "card.h"
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#include "helper.h"
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#include "implicit.h"
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enum {
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IMPLICIT_FB_NONE,
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IMPLICIT_FB_GENERIC,
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IMPLICIT_FB_FIXED,
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IMPLICIT_FB_BOTH, /* generic playback + capture (for BOSS) */
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};
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struct snd_usb_implicit_fb_match {
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unsigned int id;
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unsigned int iface_class;
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unsigned int ep_num;
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unsigned int iface;
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int type;
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};
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#define IMPLICIT_FB_GENERIC_DEV(vend, prod) \
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{ .id = USB_ID(vend, prod), .type = IMPLICIT_FB_GENERIC }
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#define IMPLICIT_FB_FIXED_DEV(vend, prod, ep, ifnum) \
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{ .id = USB_ID(vend, prod), .type = IMPLICIT_FB_FIXED, .ep_num = (ep),\
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.iface = (ifnum) }
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#define IMPLICIT_FB_BOTH_DEV(vend, prod, ep, ifnum) \
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{ .id = USB_ID(vend, prod), .type = IMPLICIT_FB_BOTH, .ep_num = (ep),\
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.iface = (ifnum) }
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#define IMPLICIT_FB_SKIP_DEV(vend, prod) \
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{ .id = USB_ID(vend, prod), .type = IMPLICIT_FB_NONE }
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/* Implicit feedback quirk table for playback */
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static const struct snd_usb_implicit_fb_match playback_implicit_fb_quirks[] = {
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/* Generic matching */
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IMPLICIT_FB_GENERIC_DEV(0x0499, 0x1509), /* Steinberg UR22 */
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IMPLICIT_FB_GENERIC_DEV(0x0763, 0x2080), /* M-Audio FastTrack Ultra */
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IMPLICIT_FB_GENERIC_DEV(0x0763, 0x2081), /* M-Audio FastTrack Ultra */
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IMPLICIT_FB_GENERIC_DEV(0x0763, 0x2030), /* M-Audio Fast Track C400 */
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IMPLICIT_FB_GENERIC_DEV(0x0763, 0x2031), /* M-Audio Fast Track C600 */
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/* Fixed EP */
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/* FIXME: check the availability of generic matching */
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IMPLICIT_FB_FIXED_DEV(0x1397, 0x0001, 0x81, 1), /* Behringer UFX1604 */
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IMPLICIT_FB_FIXED_DEV(0x1397, 0x0002, 0x81, 1), /* Behringer UFX1204 */
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IMPLICIT_FB_FIXED_DEV(0x2466, 0x8010, 0x81, 2), /* Fractal Audio Axe-Fx III */
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IMPLICIT_FB_FIXED_DEV(0x31e9, 0x0001, 0x81, 2), /* Solid State Logic SSL2 */
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IMPLICIT_FB_FIXED_DEV(0x31e9, 0x0002, 0x81, 2), /* Solid State Logic SSL2+ */
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IMPLICIT_FB_FIXED_DEV(0x0499, 0x172f, 0x81, 2), /* Steinberg UR22C */
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IMPLICIT_FB_FIXED_DEV(0x0d9a, 0x00df, 0x81, 2), /* RTX6001 */
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IMPLICIT_FB_FIXED_DEV(0x22f0, 0x0006, 0x81, 3), /* Allen&Heath Qu-16 */
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IMPLICIT_FB_FIXED_DEV(0x1686, 0xf029, 0x82, 2), /* Zoom UAC-2 */
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IMPLICIT_FB_FIXED_DEV(0x2466, 0x8003, 0x86, 2), /* Fractal Audio Axe-Fx II */
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IMPLICIT_FB_FIXED_DEV(0x0499, 0x172a, 0x86, 2), /* Yamaha MODX */
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/* Special matching */
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{ .id = USB_ID(0x07fd, 0x0004), .iface_class = USB_CLASS_AUDIO,
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.type = IMPLICIT_FB_NONE }, /* MicroBook IIc */
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/* ep = 0x84, ifnum = 0 */
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{ .id = USB_ID(0x07fd, 0x0004), .iface_class = USB_CLASS_VENDOR_SPEC,
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.type = IMPLICIT_FB_FIXED,
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.ep_num = 0x84, .iface = 0 }, /* MOTU MicroBook II */
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{} /* terminator */
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};
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/* Implicit feedback quirk table for capture: only FIXED type */
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static const struct snd_usb_implicit_fb_match capture_implicit_fb_quirks[] = {
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{} /* terminator */
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};
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/* set up sync EP information on the audioformat */
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static int add_implicit_fb_sync_ep(struct snd_usb_audio *chip,
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struct audioformat *fmt,
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int ep, int ep_idx, int ifnum,
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const struct usb_host_interface *alts)
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{
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struct usb_interface *iface;
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if (!alts) {
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iface = usb_ifnum_to_if(chip->dev, ifnum);
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if (!iface || iface->num_altsetting < 2)
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return 0;
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alts = &iface->altsetting[1];
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}
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fmt->sync_ep = ep;
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fmt->sync_iface = ifnum;
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fmt->sync_altsetting = alts->desc.bAlternateSetting;
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fmt->sync_ep_idx = ep_idx;
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fmt->implicit_fb = 1;
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usb_audio_dbg(chip,
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"%d:%d: added %s implicit_fb sync_ep %x, iface %d:%d\n",
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fmt->iface, fmt->altsetting,
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(ep & USB_DIR_IN) ? "playback" : "capture",
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fmt->sync_ep, fmt->sync_iface, fmt->sync_altsetting);
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return 1;
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}
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/* Check whether the given UAC2 iface:altset points to an implicit fb source */
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static int add_generic_uac2_implicit_fb(struct snd_usb_audio *chip,
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struct audioformat *fmt,
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unsigned int ifnum,
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unsigned int altsetting)
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{
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struct usb_host_interface *alts;
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struct usb_endpoint_descriptor *epd;
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alts = snd_usb_get_host_interface(chip, ifnum, altsetting);
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if (!alts)
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return 0;
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if (alts->desc.bInterfaceClass != USB_CLASS_AUDIO ||
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alts->desc.bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING ||
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alts->desc.bInterfaceProtocol != UAC_VERSION_2 ||
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alts->desc.bNumEndpoints < 1)
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return 0;
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epd = get_endpoint(alts, 0);
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if (!usb_endpoint_is_isoc_in(epd) ||
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(epd->bmAttributes & USB_ENDPOINT_USAGE_MASK) !=
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USB_ENDPOINT_USAGE_IMPLICIT_FB)
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return 0;
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return add_implicit_fb_sync_ep(chip, fmt, epd->bEndpointAddress, 0,
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ifnum, alts);
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}
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static bool roland_sanity_check_iface(struct usb_host_interface *alts)
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{
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if (alts->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC ||
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(alts->desc.bInterfaceSubClass != 2 &&
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alts->desc.bInterfaceProtocol != 2) ||
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alts->desc.bNumEndpoints < 1)
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return false;
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return true;
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}
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/* Like the UAC2 case above, but specific to Roland with vendor class and hack */
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static int add_roland_implicit_fb(struct snd_usb_audio *chip,
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struct audioformat *fmt,
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struct usb_host_interface *alts)
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{
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struct usb_endpoint_descriptor *epd;
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if (!roland_sanity_check_iface(alts))
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return 0;
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/* only when both streams are with ASYNC type */
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epd = get_endpoint(alts, 0);
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if (!usb_endpoint_is_isoc_out(epd) ||
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(epd->bmAttributes & USB_ENDPOINT_SYNCTYPE) != USB_ENDPOINT_SYNC_ASYNC)
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return 0;
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/* check capture EP */
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alts = snd_usb_get_host_interface(chip,
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alts->desc.bInterfaceNumber + 1,
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alts->desc.bAlternateSetting);
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if (!alts || !roland_sanity_check_iface(alts))
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return 0;
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epd = get_endpoint(alts, 0);
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if (!usb_endpoint_is_isoc_in(epd) ||
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(epd->bmAttributes & USB_ENDPOINT_SYNCTYPE) != USB_ENDPOINT_SYNC_ASYNC)
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return 0;
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chip->playback_first = 1;
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return add_implicit_fb_sync_ep(chip, fmt, epd->bEndpointAddress, 0,
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alts->desc.bInterfaceNumber, alts);
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}
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/* capture quirk for Roland device; always full-duplex */
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static int add_roland_capture_quirk(struct snd_usb_audio *chip,
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struct audioformat *fmt,
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struct usb_host_interface *alts)
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{
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struct usb_endpoint_descriptor *epd;
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if (!roland_sanity_check_iface(alts))
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return 0;
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epd = get_endpoint(alts, 0);
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if (!usb_endpoint_is_isoc_in(epd) ||
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(epd->bmAttributes & USB_ENDPOINT_SYNCTYPE) != USB_ENDPOINT_SYNC_ASYNC)
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return 0;
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alts = snd_usb_get_host_interface(chip,
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alts->desc.bInterfaceNumber - 1,
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alts->desc.bAlternateSetting);
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if (!alts || !roland_sanity_check_iface(alts))
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return 0;
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epd = get_endpoint(alts, 0);
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if (!usb_endpoint_is_isoc_out(epd))
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return 0;
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return add_implicit_fb_sync_ep(chip, fmt, epd->bEndpointAddress, 0,
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alts->desc.bInterfaceNumber, alts);
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}
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/* Playback and capture EPs on Pioneer devices share the same iface/altset
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* for the implicit feedback operation
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*/
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static bool is_pioneer_implicit_fb(struct snd_usb_audio *chip,
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struct usb_host_interface *alts)
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{
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struct usb_endpoint_descriptor *epd;
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if (USB_ID_VENDOR(chip->usb_id) != 0x2b73 &&
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USB_ID_VENDOR(chip->usb_id) != 0x08e4)
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return false;
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if (alts->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC)
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return false;
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if (alts->desc.bNumEndpoints != 2)
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return false;
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epd = get_endpoint(alts, 0);
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if (!usb_endpoint_is_isoc_out(epd) ||
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(epd->bmAttributes & USB_ENDPOINT_SYNCTYPE) != USB_ENDPOINT_SYNC_ASYNC)
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return false;
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epd = get_endpoint(alts, 1);
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if (!usb_endpoint_is_isoc_in(epd) ||
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(epd->bmAttributes & USB_ENDPOINT_SYNCTYPE) != USB_ENDPOINT_SYNC_ASYNC ||
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((epd->bmAttributes & USB_ENDPOINT_USAGE_MASK) !=
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USB_ENDPOINT_USAGE_DATA &&
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(epd->bmAttributes & USB_ENDPOINT_USAGE_MASK) !=
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USB_ENDPOINT_USAGE_IMPLICIT_FB))
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return false;
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return true;
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}
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static int __add_generic_implicit_fb(struct snd_usb_audio *chip,
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struct audioformat *fmt,
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int iface, int altset)
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{
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struct usb_host_interface *alts;
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struct usb_endpoint_descriptor *epd;
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alts = snd_usb_get_host_interface(chip, iface, altset);
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if (!alts)
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return 0;
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if ((alts->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC &&
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alts->desc.bInterfaceClass != USB_CLASS_AUDIO) ||
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alts->desc.bNumEndpoints < 1)
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return 0;
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epd = get_endpoint(alts, 0);
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if (!usb_endpoint_is_isoc_in(epd) ||
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(epd->bmAttributes & USB_ENDPOINT_SYNCTYPE) != USB_ENDPOINT_SYNC_ASYNC)
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return 0;
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return add_implicit_fb_sync_ep(chip, fmt, epd->bEndpointAddress, 0,
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iface, alts);
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}
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/* More generic quirk: look for the sync EP next to the data EP */
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static int add_generic_implicit_fb(struct snd_usb_audio *chip,
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struct audioformat *fmt,
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struct usb_host_interface *alts)
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{
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if ((fmt->ep_attr & USB_ENDPOINT_SYNCTYPE) != USB_ENDPOINT_SYNC_ASYNC)
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return 0;
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if (__add_generic_implicit_fb(chip, fmt,
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alts->desc.bInterfaceNumber + 1,
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alts->desc.bAlternateSetting))
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return 1;
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return __add_generic_implicit_fb(chip, fmt,
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alts->desc.bInterfaceNumber - 1,
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alts->desc.bAlternateSetting);
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}
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static const struct snd_usb_implicit_fb_match *
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find_implicit_fb_entry(struct snd_usb_audio *chip,
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const struct snd_usb_implicit_fb_match *match,
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const struct usb_host_interface *alts)
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{
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for (; match->id; match++)
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if (match->id == chip->usb_id &&
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(!match->iface_class ||
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(alts->desc.bInterfaceClass == match->iface_class)))
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return match;
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return NULL;
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}
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/* Setup an implicit feedback endpoint from a quirk. Returns 0 if no quirk
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* applies. Returns 1 if a quirk was found.
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*/
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static int audioformat_implicit_fb_quirk(struct snd_usb_audio *chip,
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struct audioformat *fmt,
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struct usb_host_interface *alts)
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{
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const struct snd_usb_implicit_fb_match *p;
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unsigned int attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE;
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p = find_implicit_fb_entry(chip, playback_implicit_fb_quirks, alts);
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if (p) {
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switch (p->type) {
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case IMPLICIT_FB_GENERIC:
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return add_generic_implicit_fb(chip, fmt, alts);
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case IMPLICIT_FB_NONE:
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return 0; /* No quirk */
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case IMPLICIT_FB_FIXED:
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return add_implicit_fb_sync_ep(chip, fmt, p->ep_num, 0,
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p->iface, NULL);
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}
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}
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/* Special handling for devices with capture quirks */
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p = find_implicit_fb_entry(chip, capture_implicit_fb_quirks, alts);
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if (p) {
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switch (p->type) {
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case IMPLICIT_FB_FIXED:
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return 0; /* no quirk */
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case IMPLICIT_FB_BOTH:
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chip->playback_first = 1;
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return add_generic_implicit_fb(chip, fmt, alts);
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}
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}
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/* Generic UAC2 implicit feedback */
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if (attr == USB_ENDPOINT_SYNC_ASYNC &&
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alts->desc.bInterfaceClass == USB_CLASS_AUDIO &&
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alts->desc.bInterfaceProtocol == UAC_VERSION_2 &&
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alts->desc.bNumEndpoints == 1) {
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if (add_generic_uac2_implicit_fb(chip, fmt,
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alts->desc.bInterfaceNumber + 1,
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alts->desc.bAlternateSetting))
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return 1;
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}
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/* Roland/BOSS implicit feedback with vendor spec class */
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if (USB_ID_VENDOR(chip->usb_id) == 0x0582) {
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if (add_roland_implicit_fb(chip, fmt, alts) > 0)
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return 1;
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}
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/* Pioneer devices with vendor spec class */
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if (is_pioneer_implicit_fb(chip, alts)) {
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chip->playback_first = 1;
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return add_implicit_fb_sync_ep(chip, fmt,
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get_endpoint(alts, 1)->bEndpointAddress,
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1, alts->desc.bInterfaceNumber,
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alts);
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}
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/* Try the generic implicit fb if available */
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if (chip->generic_implicit_fb)
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return add_generic_implicit_fb(chip, fmt, alts);
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/* No quirk */
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return 0;
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}
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/* same for capture, but only handling FIXED entry */
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static int audioformat_capture_quirk(struct snd_usb_audio *chip,
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struct audioformat *fmt,
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struct usb_host_interface *alts)
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{
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const struct snd_usb_implicit_fb_match *p;
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p = find_implicit_fb_entry(chip, capture_implicit_fb_quirks, alts);
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if (p && (p->type == IMPLICIT_FB_FIXED || p->type == IMPLICIT_FB_BOTH))
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return add_implicit_fb_sync_ep(chip, fmt, p->ep_num, 0,
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p->iface, NULL);
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/* Roland/BOSS need full-duplex streams */
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if (USB_ID_VENDOR(chip->usb_id) == 0x0582) {
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if (add_roland_capture_quirk(chip, fmt, alts) > 0)
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return 1;
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}
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if (is_pioneer_implicit_fb(chip, alts))
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return 1; /* skip the quirk, also don't handle generic sync EP */
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return 0;
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}
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/*
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* Parse altset and set up implicit feedback endpoint on the audioformat
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*/
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int snd_usb_parse_implicit_fb_quirk(struct snd_usb_audio *chip,
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struct audioformat *fmt,
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struct usb_host_interface *alts)
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{
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if (fmt->endpoint & USB_DIR_IN)
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return audioformat_capture_quirk(chip, fmt, alts);
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else
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return audioformat_implicit_fb_quirk(chip, fmt, alts);
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}
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/*
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* Return the score of matching two audioformats.
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* Veto the audioformat if:
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* - It has no channels for some reason.
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* - Requested PCM format is not supported.
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* - Requested sample rate is not supported.
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*/
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static int match_endpoint_audioformats(struct snd_usb_substream *subs,
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const struct audioformat *fp,
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int rate, int channels,
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snd_pcm_format_t pcm_format)
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{
|
|
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 = NULL;
|
|
int score, high_score;
|
|
|
|
/* Use the original audioformat as fallback for the shared altset */
|
|
if (target->iface == target->sync_iface &&
|
|
target->altsetting == target->sync_altsetting)
|
|
sync_fmt = target;
|
|
|
|
subs = find_matching_substream(chip, stream, target->sync_ep,
|
|
target->fmt_type);
|
|
if (!subs)
|
|
return sync_fmt;
|
|
|
|
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;
|
|
}
|
|
|