/* * Driver for Tascam US-X2Y USB soundcards * * FPGA Loader + ALSA Startup * * Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/interrupt.h> #include <linux/usb.h> #include <sound/core.h> #include <sound/memalloc.h> #include <sound/pcm.h> #include <sound/hwdep.h> #include "usx2y.h" #include "usbusx2y.h" #include "usX2Yhwdep.h" static int snd_us428ctls_vm_fault(struct vm_area_struct *area, struct vm_fault *vmf) { unsigned long offset; struct page * page; void *vaddr; snd_printdd("ENTER, start %lXh, pgoff %ld\n", area->vm_start, vmf->pgoff); offset = vmf->pgoff << PAGE_SHIFT; vaddr = (char*)((struct usX2Ydev *)area->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 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 > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) { snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem)); return -EINVAL; } if (!us428->us428ctls_sharedmem) { init_waitqueue_head(&us428->us428ctls_wait_queue_head); if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(struct us428ctls_sharedmem), GFP_KERNEL))) return -ENOMEM; memset(us428->us428ctls_sharedmem, -1, sizeof(struct us428ctls_sharedmem)); us428->us428ctls_sharedmem->CtlSnapShotLast = -2; } area->vm_ops = &us428ctls_vm_ops; area->vm_flags |= VM_RESERVED | VM_DONTEXPAND; area->vm_private_data = hw->private_data; return 0; } static unsigned int snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait) { unsigned int mask = 0; struct usX2Ydev *us428 = hw->private_data; struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem; if (us428->chip_status & USX2Y_STAT_CHIP_HUP) return POLLHUP; poll_wait(file, &us428->us428ctls_wait_queue_head, wait); if (shm != NULL && shm->CtlSnapShotLast != shm->CtlSnapShotRed) mask |= POLLIN; return mask; } static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw, struct snd_hwdep_dsp_status *info) { static char *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->chip.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 (0 > id) 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 struct snd_usb_midi_endpoint_info quirk_data_1 = { .out_ep = 0x06, .in_ep = 0x06, .out_cables = 0x001, .in_cables = 0x001 }; static 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 struct snd_usb_midi_endpoint_info quirk_data_2 = { .out_ep = 0x06, .in_ep = 0x06, .out_cables = 0x003, .in_cables = 0x003 }; static 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)->chip.dev; struct usb_interface *iface = usb_ifnum_to_if(dev, 0); struct snd_usb_audio_quirk *quirk = le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ? &quirk_2 : &quirk_1; snd_printdd("usX2Y_create_usbmidi \n"); return snd_usb_create_midi_interface(&usX2Y(card)->chip, iface, quirk); } static int usX2Y_create_alsa_devices(struct snd_card *card) { int err; do { if ((err = usX2Y_create_usbmidi(card)) < 0) { snd_printk(KERN_ERR "usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err); break; } if ((err = usX2Y_audio_create(card)) < 0) break; if ((err = usX2Y_hwdep_pcm_new(card)) < 0) break; if ((err = snd_card_register(card)) < 0) break; } while (0); return err; } static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw, struct snd_hwdep_dsp_image *dsp) { struct usX2Ydev *priv = hw->private_data; int lret, err = -EINVAL; snd_printdd( "dsp_load %s\n", dsp->name); if (access_ok(VERIFY_READ, dsp->image, dsp->length)) { struct usb_device* dev = priv->chip.dev; char *buf = kmalloc(dsp->length, GFP_KERNEL); if (!buf) return -ENOMEM; if (copy_from_user(buf, dsp->image, dsp->length)) { kfree(buf); return -EFAULT; } 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_AsyncSeq04_init(priv); if (err) { snd_printk(KERN_ERR "usX2Y_AsyncSeq04_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); snd_card_free(hw->card); 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; if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0) return err; hw->iface = SNDRV_HWDEP_IFACE_USX2Y; hw->private_data = usX2Y(card); 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, "/proc/bus/usb/%03d/%03d", device->bus->busnum, device->devnum); return 0; }