// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for Tascam US-X2Y USB soundcards * * FPGA Loader + ALSA Startup * * Copyright (c) 2003 by Karsten Wiese */ #include #include #include #include #include #include #include #include "usx2y.h" #include "usbusx2y.h" #include "usX2Yhwdep.h" static vm_fault_t snd_us428ctls_vm_fault(struct vm_fault *vmf) { unsigned long offset; struct page *page; void *vaddr; snd_printdd("ENTER, start %lXh, pgoff %ld\n", vmf->vma->vm_start, vmf->pgoff); offset = vmf->pgoff << PAGE_SHIFT; vaddr = (char *)((struct usx2ydev *)vmf->vma->vm_private_data)->us428ctls_sharedmem + offset; page = virt_to_page(vaddr); get_page(page); vmf->page = page; snd_printdd("vaddr=%p made us428ctls_vm_fault() page %p\n", vaddr, page); return 0; } static const struct vm_operations_struct us428ctls_vm_ops = { .fault = snd_us428ctls_vm_fault, }; static int snd_us428ctls_mmap(struct snd_hwdep *hw, struct file *filp, struct vm_area_struct *area) { unsigned long size = (unsigned long)(area->vm_end - area->vm_start); struct usx2ydev *us428 = hw->private_data; // FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs? // so as long as the device isn't fully initialised yet we return -EBUSY here. if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT)) return -EBUSY; /* if userspace tries to mmap beyond end of our buffer, fail */ if (size > US428_SHAREDMEM_PAGES) { snd_printd("%lu > %lu\n", size, (unsigned long)US428_SHAREDMEM_PAGES); return -EINVAL; } area->vm_ops = &us428ctls_vm_ops; vm_flags_set(area, VM_DONTEXPAND | VM_DONTDUMP); area->vm_private_data = hw->private_data; return 0; } static __poll_t snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait) { __poll_t mask = 0; struct usx2ydev *us428 = hw->private_data; struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem; if (us428->chip_status & USX2Y_STAT_CHIP_HUP) return EPOLLHUP; poll_wait(file, &us428->us428ctls_wait_queue_head, wait); if (shm && shm->ctl_snapshot_last != shm->ctl_snapshot_red) mask |= EPOLLIN; return mask; } static int snd_usx2y_hwdep_dsp_status(struct snd_hwdep *hw, struct snd_hwdep_dsp_status *info) { static const char * const type_ids[USX2Y_TYPE_NUMS] = { [USX2Y_TYPE_122] = "us122", [USX2Y_TYPE_224] = "us224", [USX2Y_TYPE_428] = "us428", }; struct usx2ydev *us428 = hw->private_data; int id = -1; switch (le16_to_cpu(us428->dev->descriptor.idProduct)) { case USB_ID_US122: id = USX2Y_TYPE_122; break; case USB_ID_US224: id = USX2Y_TYPE_224; break; case USB_ID_US428: id = USX2Y_TYPE_428; break; } if (id < 0) return -ENODEV; strcpy(info->id, type_ids[id]); info->num_dsps = 2; // 0: Prepad Data, 1: FPGA Code if (us428->chip_status & USX2Y_STAT_CHIP_INIT) info->chip_ready = 1; info->version = USX2Y_DRIVER_VERSION; return 0; } static int usx2y_create_usbmidi(struct snd_card *card) { static const struct snd_usb_midi_endpoint_info quirk_data_1 = { .out_ep = 0x06, .in_ep = 0x06, .out_cables = 0x001, .in_cables = 0x001 }; static const struct snd_usb_audio_quirk quirk_1 = { .vendor_name = "TASCAM", .product_name = NAME_ALLCAPS, .ifnum = 0, .type = QUIRK_MIDI_FIXED_ENDPOINT, .data = &quirk_data_1 }; static const struct snd_usb_midi_endpoint_info quirk_data_2 = { .out_ep = 0x06, .in_ep = 0x06, .out_cables = 0x003, .in_cables = 0x003 }; static const struct snd_usb_audio_quirk quirk_2 = { .vendor_name = "TASCAM", .product_name = "US428", .ifnum = 0, .type = QUIRK_MIDI_FIXED_ENDPOINT, .data = &quirk_data_2 }; struct usb_device *dev = usx2y(card)->dev; struct usb_interface *iface = usb_ifnum_to_if(dev, 0); const struct snd_usb_audio_quirk *quirk = le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ? &quirk_2 : &quirk_1; snd_printdd("%s\n", __func__); return snd_usbmidi_create(card, iface, &usx2y(card)->midi_list, quirk); } static int usx2y_create_alsa_devices(struct snd_card *card) { int err; err = usx2y_create_usbmidi(card); if (err < 0) { snd_printk(KERN_ERR "%s: usx2y_create_usbmidi error %i\n", __func__, err); return err; } err = usx2y_audio_create(card); if (err < 0) return err; err = usx2y_hwdep_pcm_new(card); if (err < 0) return err; err = snd_card_register(card); if (err < 0) return err; return 0; } static int snd_usx2y_hwdep_dsp_load(struct snd_hwdep *hw, struct snd_hwdep_dsp_image *dsp) { struct usx2ydev *priv = hw->private_data; struct usb_device *dev = priv->dev; int lret, err; char *buf; snd_printdd("dsp_load %s\n", dsp->name); buf = memdup_user(dsp->image, dsp->length); if (IS_ERR(buf)) return PTR_ERR(buf); err = usb_set_interface(dev, 0, 1); if (err) snd_printk(KERN_ERR "usb_set_interface error\n"); else err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000); kfree(buf); if (err) return err; if (dsp->index == 1) { msleep(250); // give the device some time err = usx2y_async_seq04_init(priv); if (err) { snd_printk(KERN_ERR "usx2y_async_seq04_init error\n"); return err; } err = usx2y_in04_init(priv); if (err) { snd_printk(KERN_ERR "usx2y_in04_init error\n"); return err; } err = usx2y_create_alsa_devices(hw->card); if (err) { snd_printk(KERN_ERR "usx2y_create_alsa_devices error %i\n", err); return err; } priv->chip_status |= USX2Y_STAT_CHIP_INIT; snd_printdd("%s: alsa all started\n", hw->name); } return err; } int usx2y_hwdep_new(struct snd_card *card, struct usb_device *device) { int err; struct snd_hwdep *hw; struct usx2ydev *us428 = usx2y(card); err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw); if (err < 0) return err; hw->iface = SNDRV_HWDEP_IFACE_USX2Y; hw->private_data = us428; hw->ops.dsp_status = snd_usx2y_hwdep_dsp_status; hw->ops.dsp_load = snd_usx2y_hwdep_dsp_load; hw->ops.mmap = snd_us428ctls_mmap; hw->ops.poll = snd_us428ctls_poll; hw->exclusive = 1; sprintf(hw->name, "/dev/bus/usb/%03d/%03d", device->bus->busnum, device->devnum); us428->us428ctls_sharedmem = alloc_pages_exact(US428_SHAREDMEM_PAGES, GFP_KERNEL); if (!us428->us428ctls_sharedmem) return -ENOMEM; memset(us428->us428ctls_sharedmem, -1, US428_SHAREDMEM_PAGES); us428->us428ctls_sharedmem->ctl_snapshot_last = -2; return 0; }