// SPDX-License-Identifier: GPL-2.0-or-later /* * usbusx2y.c - ALSA USB US-428 Driver * 2005-04-14 Karsten Wiese Version 0.8.7.2: Call snd_card_free() instead of snd_card_free_in_thread() to prevent oops with dead keyboard symptom. Tested ok with kernel 2.6.12-rc2. 2004-12-14 Karsten Wiese Version 0.8.7.1: snd_pcm_open for rawusb pcm-devices now returns -EBUSY if called without rawusb's hwdep device being open. 2004-12-02 Karsten Wiese Version 0.8.7: Use macro usb_maxpacket() for portability. 2004-10-26 Karsten Wiese Version 0.8.6: wake_up() process waiting in usx2y_urbs_start() on error. 2004-10-21 Karsten Wiese Version 0.8.5: nrpacks is runtime or compiletime configurable now with tested values from 1 to 4. 2004-10-03 Karsten Wiese Version 0.8.2: Avoid any possible racing while in prepare callback. 2004-09-30 Karsten Wiese Version 0.8.0: Simplified things and made ohci work again. 2004-09-20 Karsten Wiese Version 0.7.3: Use usb_kill_urb() instead of deprecated (kernel 2.6.9) usb_unlink_urb(). 2004-07-13 Karsten Wiese Version 0.7.1: Don't sleep in START/STOP callbacks anymore. us428 channels C/D not handled just for this version, sorry. 2004-06-21 Karsten Wiese Version 0.6.4: Temporarely suspend midi input to sanely call usb_set_interface() when setting format. 2004-06-12 Karsten Wiese Version 0.6.3: Made it thus the following rule is enforced: "All pcm substreams of one usx2y have to operate at the same rate & format." 2004-04-06 Karsten Wiese Version 0.6.0: Runs on 2.6.5 kernel without any "--with-debug=" things. us224 reported running. 2004-01-14 Karsten Wiese Version 0.5.1: Runs with 2.6.1 kernel. 2003-12-30 Karsten Wiese Version 0.4.1: Fix 24Bit 4Channel capturing for the us428. 2003-11-27 Karsten Wiese, Martin Langer Version 0.4: us122 support. us224 could be tested by uncommenting the sections containing USB_ID_US224 2003-11-03 Karsten Wiese Version 0.3: 24Bit support. "arecord -D hw:1 -c 2 -r 48000 -M -f S24_3LE|aplay -D hw:1 -c 2 -r 48000 -M -f S24_3LE" works. 2003-08-22 Karsten Wiese Version 0.0.8: Removed EZUSB Firmware. First Stage Firmwaredownload is now done by tascam-firmware downloader. See: http://usb-midi-fw.sourceforge.net/tascam-firmware.tar.gz 2003-06-18 Karsten Wiese Version 0.0.5: changed to compile with kernel 2.4.21 and alsa 0.9.4 2002-10-16 Karsten Wiese Version 0.0.4: compiles again with alsa-current. USB_ISO_ASAP not used anymore (most of the time), instead urb->start_frame is calculated here now, some calls inside usb-driver don't need to happen anymore. To get the best out of this: Disable APM-support in the kernel as APM-BIOS calls (once each second) hard disable interrupt for many precious milliseconds. This helped me much on my slowish PII 400 & PIII 500. ACPI yet untested but might cause the same bad behaviour. Use a kernel with lowlatency and preemptiv patches applied. To autoload snd-usb-midi append a line post-install snd-usb-us428 modprobe snd-usb-midi to /etc/modules.conf. known problems: sliders, knobs, lights not yet handled except MASTER Volume slider. "pcm -c 2" doesn't work. "pcm -c 2 -m direct_interleaved" does. KDE3: "Enable full duplex operation" deadlocks. 2002-08-31 Karsten Wiese Version 0.0.3: audio also simplex; simplifying: iso urbs only 1 packet, melted structs. ASYNC_UNLINK not used anymore: no more crashes so far..... for alsa 0.9 rc3. 2002-08-09 Karsten Wiese Version 0.0.2: midi works with snd-usb-midi, audio (only fullduplex now) with i.e. bristol. The firmware has been sniffed from win2k us-428 driver 3.09. * Copyright (c) 2002 - 2004 Karsten Wiese */ #include #include #include #include #include #include #include #include #include #include #include "usx2y.h" #include "usbusx2y.h" #include "usX2Yhwdep.h" MODULE_AUTHOR("Karsten Wiese "); MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.8.7.2"); MODULE_LICENSE("GPL"); static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */ static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ module_param_array(index, int, NULL, 0444); MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS"."); module_param_array(id, charp, NULL, 0444); MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS"."); module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS"."); static int snd_usx2y_card_used[SNDRV_CARDS]; static void snd_usx2y_card_private_free(struct snd_card *card); static void usx2y_unlinkseq(struct snd_usx2y_async_seq *s); /* * pipe 4 is used for switching the lamps, setting samplerate, volumes .... */ static void i_usx2y_out04_int(struct urb *urb) { #ifdef CONFIG_SND_DEBUG if (urb->status) { int i; struct usx2ydev *usx2y = urb->context; for (i = 0; i < 10 && usx2y->as04.urb[i] != urb; i++) ; dev_dbg(&urb->dev->dev, "%s urb %i status=%i\n", __func__, i, urb->status); } #endif } static void i_usx2y_in04_int(struct urb *urb) { int err = 0; struct usx2ydev *usx2y = urb->context; struct us428ctls_sharedmem *us428ctls = usx2y->us428ctls_sharedmem; struct us428_p4out *p4out; int i, j, n, diff, send; usx2y->in04_int_calls++; if (urb->status) { dev_dbg(&urb->dev->dev, "Interrupt Pipe 4 came back with status=%i\n", urb->status); return; } if (us428ctls) { diff = -1; if (us428ctls->ctl_snapshot_last == -2) { diff = 0; memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last)); us428ctls->ctl_snapshot_last = -1; } else { for (i = 0; i < 21; i++) { if (usx2y->in04_last[i] != ((char *)usx2y->in04_buf)[i]) { if (diff < 0) diff = i; usx2y->in04_last[i] = ((char *)usx2y->in04_buf)[i]; } } } if (diff >= 0) { n = us428ctls->ctl_snapshot_last + 1; if (n >= N_US428_CTL_BUFS || n < 0) n = 0; memcpy(us428ctls->ctl_snapshot + n, usx2y->in04_buf, sizeof(us428ctls->ctl_snapshot[0])); us428ctls->ctl_snapshot_differs_at[n] = diff; us428ctls->ctl_snapshot_last = n; wake_up(&usx2y->us428ctls_wait_queue_head); } } if (usx2y->us04) { if (!usx2y->us04->submitted) { do { err = usb_submit_urb(usx2y->us04->urb[usx2y->us04->submitted++], GFP_ATOMIC); } while (!err && usx2y->us04->submitted < usx2y->us04->len); } } else { if (us428ctls && us428ctls->p4out_last >= 0 && us428ctls->p4out_last < N_US428_P4OUT_BUFS) { if (us428ctls->p4out_last != us428ctls->p4out_sent) { send = us428ctls->p4out_sent + 1; if (send >= N_US428_P4OUT_BUFS) send = 0; for (j = 0; j < URBS_ASYNC_SEQ && !err; ++j) { if (!usx2y->as04.urb[j]->status) { p4out = us428ctls->p4out + send; // FIXME if more than 1 p4out is new, 1 gets lost. usb_fill_bulk_urb(usx2y->as04.urb[j], usx2y->dev, usb_sndbulkpipe(usx2y->dev, 0x04), &p4out->val.vol, p4out->type == ELT_LIGHT ? sizeof(struct us428_lights) : 5, i_usx2y_out04_int, usx2y); err = usb_submit_urb(usx2y->as04.urb[j], GFP_ATOMIC); us428ctls->p4out_sent = send; break; } } } } } if (err) dev_err(&urb->dev->dev, "in04_int() usb_submit_urb err=%i\n", err); urb->dev = usx2y->dev; usb_submit_urb(urb, GFP_ATOMIC); } /* * Prepare some urbs */ int usx2y_async_seq04_init(struct usx2ydev *usx2y) { int err = 0, i; if (WARN_ON(usx2y->as04.buffer)) return -EBUSY; usx2y->as04.buffer = kmalloc_array(URBS_ASYNC_SEQ, URB_DATA_LEN_ASYNC_SEQ, GFP_KERNEL); if (!usx2y->as04.buffer) { err = -ENOMEM; } else { for (i = 0; i < URBS_ASYNC_SEQ; ++i) { usx2y->as04.urb[i] = usb_alloc_urb(0, GFP_KERNEL); if (!usx2y->as04.urb[i]) { err = -ENOMEM; break; } usb_fill_bulk_urb(usx2y->as04.urb[i], usx2y->dev, usb_sndbulkpipe(usx2y->dev, 0x04), usx2y->as04.buffer + URB_DATA_LEN_ASYNC_SEQ * i, 0, i_usx2y_out04_int, usx2y); err = usb_urb_ep_type_check(usx2y->as04.urb[i]); if (err < 0) break; } } if (err) usx2y_unlinkseq(&usx2y->as04); return err; } int usx2y_in04_init(struct usx2ydev *usx2y) { int err; if (WARN_ON(usx2y->in04_urb)) return -EBUSY; usx2y->in04_urb = usb_alloc_urb(0, GFP_KERNEL); if (!usx2y->in04_urb) { err = -ENOMEM; goto error; } usx2y->in04_buf = kmalloc(21, GFP_KERNEL); if (!usx2y->in04_buf) { err = -ENOMEM; goto error; } init_waitqueue_head(&usx2y->in04_wait_queue); usb_fill_int_urb(usx2y->in04_urb, usx2y->dev, usb_rcvintpipe(usx2y->dev, 0x4), usx2y->in04_buf, 21, i_usx2y_in04_int, usx2y, 10); if (usb_urb_ep_type_check(usx2y->in04_urb)) { err = -EINVAL; goto error; } return usb_submit_urb(usx2y->in04_urb, GFP_KERNEL); error: kfree(usx2y->in04_buf); usb_free_urb(usx2y->in04_urb); usx2y->in04_buf = NULL; usx2y->in04_urb = NULL; return err; } static void usx2y_unlinkseq(struct snd_usx2y_async_seq *s) { int i; for (i = 0; i < URBS_ASYNC_SEQ; ++i) { if (!s->urb[i]) continue; usb_kill_urb(s->urb[i]); usb_free_urb(s->urb[i]); s->urb[i] = NULL; } kfree(s->buffer); s->buffer = NULL; } static const struct usb_device_id snd_usx2y_usb_id_table[] = { { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x1604, .idProduct = USB_ID_US428 }, { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x1604, .idProduct = USB_ID_US122 }, { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x1604, .idProduct = USB_ID_US224 }, { /* terminator */ } }; MODULE_DEVICE_TABLE(usb, snd_usx2y_usb_id_table); static int usx2y_create_card(struct usb_device *device, struct usb_interface *intf, struct snd_card **cardp) { int dev; struct snd_card *card; int err; for (dev = 0; dev < SNDRV_CARDS; ++dev) if (enable[dev] && !snd_usx2y_card_used[dev]) break; if (dev >= SNDRV_CARDS) return -ENODEV; err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE, sizeof(struct usx2ydev), &card); if (err < 0) return err; snd_usx2y_card_used[usx2y(card)->card_index = dev] = 1; card->private_free = snd_usx2y_card_private_free; usx2y(card)->dev = device; init_waitqueue_head(&usx2y(card)->prepare_wait_queue); init_waitqueue_head(&usx2y(card)->us428ctls_wait_queue_head); mutex_init(&usx2y(card)->pcm_mutex); INIT_LIST_HEAD(&usx2y(card)->midi_list); strcpy(card->driver, "USB "NAME_ALLCAPS""); sprintf(card->shortname, "TASCAM "NAME_ALLCAPS""); sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)", card->shortname, le16_to_cpu(device->descriptor.idVendor), le16_to_cpu(device->descriptor.idProduct), 0,//us428(card)->usbmidi.ifnum, usx2y(card)->dev->bus->busnum, usx2y(card)->dev->devnum); *cardp = card; return 0; } static void snd_usx2y_card_private_free(struct snd_card *card) { struct usx2ydev *usx2y = usx2y(card); kfree(usx2y->in04_buf); usb_free_urb(usx2y->in04_urb); if (usx2y->us428ctls_sharedmem) free_pages_exact(usx2y->us428ctls_sharedmem, US428_SHAREDMEM_PAGES); if (usx2y->card_index >= 0 && usx2y->card_index < SNDRV_CARDS) snd_usx2y_card_used[usx2y->card_index] = 0; } static void snd_usx2y_disconnect(struct usb_interface *intf) { struct snd_card *card; struct usx2ydev *usx2y; struct list_head *p; card = usb_get_intfdata(intf); if (!card) return; usx2y = usx2y(card); usx2y->chip_status = USX2Y_STAT_CHIP_HUP; usx2y_unlinkseq(&usx2y->as04); usb_kill_urb(usx2y->in04_urb); snd_card_disconnect(card); /* release the midi resources */ list_for_each(p, &usx2y->midi_list) { snd_usbmidi_disconnect(p); } if (usx2y->us428ctls_sharedmem) wake_up(&usx2y->us428ctls_wait_queue_head); snd_card_free(card); } static int snd_usx2y_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *device = interface_to_usbdev(intf); struct snd_card *card; int err; if (le16_to_cpu(device->descriptor.idVendor) != 0x1604 || (le16_to_cpu(device->descriptor.idProduct) != USB_ID_US122 && le16_to_cpu(device->descriptor.idProduct) != USB_ID_US224 && le16_to_cpu(device->descriptor.idProduct) != USB_ID_US428)) return -EINVAL; err = usx2y_create_card(device, intf, &card); if (err < 0) return err; err = usx2y_hwdep_new(card, device); if (err < 0) goto error; err = snd_card_register(card); if (err < 0) goto error; dev_set_drvdata(&intf->dev, card); return 0; error: snd_card_free(card); return err; } static struct usb_driver snd_usx2y_usb_driver = { .name = "snd-usb-usx2y", .probe = snd_usx2y_probe, .disconnect = snd_usx2y_disconnect, .id_table = snd_usx2y_usb_id_table, }; module_usb_driver(snd_usx2y_usb_driver);