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440 lines
14 KiB
440 lines
14 KiB
// 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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}; |
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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_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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/* No quirk for playback but with capture quirk (see below) */ |
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IMPLICIT_FB_SKIP_DEV(0x0582, 0x0130), /* BOSS BR-80 */ |
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IMPLICIT_FB_SKIP_DEV(0x0582, 0x0171), /* BOSS RC-505 */ |
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IMPLICIT_FB_SKIP_DEV(0x0582, 0x0185), /* BOSS GP-10 */ |
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IMPLICIT_FB_SKIP_DEV(0x0582, 0x0189), /* BOSS GT-100v2 */ |
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IMPLICIT_FB_SKIP_DEV(0x0582, 0x01d6), /* BOSS GT-1 */ |
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IMPLICIT_FB_SKIP_DEV(0x0582, 0x01d8), /* BOSS Katana */ |
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IMPLICIT_FB_SKIP_DEV(0x0582, 0x01e5), /* BOSS GT-001 */ |
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IMPLICIT_FB_SKIP_DEV(0x0582, 0x0203), /* BOSS AD-10 */ |
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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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IMPLICIT_FB_FIXED_DEV(0x0582, 0x0130, 0x0d, 0x01), /* BOSS BR-80 */ |
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IMPLICIT_FB_FIXED_DEV(0x0582, 0x0171, 0x0d, 0x01), /* BOSS RC-505 */ |
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IMPLICIT_FB_FIXED_DEV(0x0582, 0x0185, 0x0d, 0x01), /* BOSS GP-10 */ |
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IMPLICIT_FB_FIXED_DEV(0x0582, 0x0189, 0x0d, 0x01), /* BOSS GT-100v2 */ |
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IMPLICIT_FB_FIXED_DEV(0x0582, 0x01d6, 0x0d, 0x01), /* BOSS GT-1 */ |
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IMPLICIT_FB_FIXED_DEV(0x0582, 0x01d8, 0x0d, 0x01), /* BOSS Katana */ |
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IMPLICIT_FB_FIXED_DEV(0x0582, 0x01e5, 0x0d, 0x01), /* BOSS GT-001 */ |
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IMPLICIT_FB_FIXED_DEV(0x0582, 0x0203, 0x0d, 0x01), /* BOSS AD-10 */ |
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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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/* Like the function 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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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_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 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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/* Playback and capture EPs on Pioneer devices share the same iface/altset, |
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* but they don't seem working with the implicit fb mode well, hence we |
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* just return as if the sync were already set up. |
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*/ |
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static int skip_pioneer_sync_ep(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 (alts->desc.bNumEndpoints != 2) |
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return 0; |
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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 0; |
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return 1; /* don't handle with the implicit fb, just skip sync EP */ |
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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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/* 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 (attr == USB_ENDPOINT_SYNC_ASYNC && |
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alts->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC && |
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alts->desc.bInterfaceProtocol == 2 && |
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alts->desc.bNumEndpoints == 1 && |
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USB_ID_VENDOR(chip->usb_id) == 0x0582 /* Roland */) { |
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if (add_roland_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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/* Pioneer devices with vendor spec class */ |
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if (attr == USB_ENDPOINT_SYNC_ASYNC && |
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alts->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC && |
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(USB_ID_VENDOR(chip->usb_id) == 0x2b73 || /* Pioneer */ |
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USB_ID_VENDOR(chip->usb_id) == 0x08e4 /* Pioneer */)) { |
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if (skip_pioneer_sync_ep(chip, fmt, alts)) |
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return 1; |
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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) |
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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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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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{ |
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int i, score; |
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if (fp->channels < 1) |
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return 0; |
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if (!(fp->formats & pcm_format_to_bits(pcm_format))) |
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return 0; |
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if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) { |
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if (rate < fp->rate_min || rate > fp->rate_max) |
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return 0; |
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} else { |
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for (i = 0; i < fp->nr_rates; i++) { |
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if (fp->rate_table[i] == rate) |
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break; |
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} |
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if (i >= fp->nr_rates) |
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return 0; |
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} |
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score = 1; |
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if (fp->channels == channels) |
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score++; |
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return score; |
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} |
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static struct snd_usb_substream * |
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find_matching_substream(struct snd_usb_audio *chip, int stream, int ep_num, |
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int fmt_type) |
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{ |
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struct snd_usb_stream *as; |
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struct snd_usb_substream *subs; |
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list_for_each_entry(as, &chip->pcm_list, list) { |
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subs = &as->substream[stream]; |
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if (as->fmt_type == fmt_type && subs->ep_num == ep_num) |
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return subs; |
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} |
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return NULL; |
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} |
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/* |
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* Return the audioformat that is suitable for the implicit fb |
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*/ |
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const struct audioformat * |
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snd_usb_find_implicit_fb_sync_format(struct snd_usb_audio *chip, |
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const struct audioformat *target, |
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const struct snd_pcm_hw_params *params, |
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int stream) |
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{ |
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struct snd_usb_substream *subs; |
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const struct audioformat *fp, *sync_fmt = NULL; |
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int score, high_score; |
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/* Use the original audioformat as fallback for the shared altset */ |
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if (target->iface == target->sync_iface && |
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target->altsetting == target->sync_altsetting) |
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sync_fmt = target; |
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subs = find_matching_substream(chip, stream, target->sync_ep, |
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target->fmt_type); |
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if (!subs) |
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return sync_fmt; |
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high_score = 0; |
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list_for_each_entry(fp, &subs->fmt_list, list) { |
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score = match_endpoint_audioformats(subs, fp, |
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params_rate(params), |
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params_channels(params), |
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params_format(params)); |
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if (score > high_score) { |
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sync_fmt = fp; |
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high_score = score; |
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} |
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} |
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return sync_fmt; |
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} |
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