1/* 2 * Driver for Tascam US-X2Y USB soundcards 3 * 4 * FPGA Loader + ALSA Startup 5 * 6 * Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 */ 22 23#include <linux/interrupt.h> 24#include <linux/slab.h> 25#include <linux/usb.h> 26#include <sound/core.h> 27#include <sound/memalloc.h> 28#include <sound/pcm.h> 29#include <sound/hwdep.h> 30#include "usx2y.h" 31#include "usbusx2y.h" 32#include "usX2Yhwdep.h" 33 34static int snd_us428ctls_vm_fault(struct vm_area_struct *area, 35 struct vm_fault *vmf) 36{ 37 unsigned long offset; 38 struct page * page; 39 void *vaddr; 40 41 snd_printdd("ENTER, start %lXh, pgoff %ld\n", 42 area->vm_start, 43 vmf->pgoff); 44 45 offset = vmf->pgoff << PAGE_SHIFT; 46 vaddr = (char*)((struct usX2Ydev *)area->vm_private_data)->us428ctls_sharedmem + offset; 47 page = virt_to_page(vaddr); 48 get_page(page); 49 vmf->page = page; 50 51 snd_printdd("vaddr=%p made us428ctls_vm_fault() page %p\n", 52 vaddr, page); 53 54 return 0; 55} 56 57static const struct vm_operations_struct us428ctls_vm_ops = { 58 .fault = snd_us428ctls_vm_fault, 59}; 60 61static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area) 62{ 63 unsigned long size = (unsigned long)(area->vm_end - area->vm_start); 64 struct usX2Ydev *us428 = hw->private_data; 65 66 // FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs? 67 // so as long as the device isn't fully initialised yet we return -EBUSY here. 68 if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT)) 69 return -EBUSY; 70 71 /* if userspace tries to mmap beyond end of our buffer, fail */ 72 if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) { 73 snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem)); 74 return -EINVAL; 75 } 76 77 if (!us428->us428ctls_sharedmem) { 78 init_waitqueue_head(&us428->us428ctls_wait_queue_head); 79 if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(struct us428ctls_sharedmem), GFP_KERNEL))) 80 return -ENOMEM; 81 memset(us428->us428ctls_sharedmem, -1, sizeof(struct us428ctls_sharedmem)); 82 us428->us428ctls_sharedmem->CtlSnapShotLast = -2; 83 } 84 area->vm_ops = &us428ctls_vm_ops; 85 area->vm_flags |= VM_RESERVED | VM_DONTEXPAND; 86 area->vm_private_data = hw->private_data; 87 return 0; 88} 89 90static unsigned int snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait) 91{ 92 unsigned int mask = 0; 93 struct usX2Ydev *us428 = hw->private_data; 94 struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem; 95 if (us428->chip_status & USX2Y_STAT_CHIP_HUP) 96 return POLLHUP; 97 98 poll_wait(file, &us428->us428ctls_wait_queue_head, wait); 99 100 if (shm != NULL && shm->CtlSnapShotLast != shm->CtlSnapShotRed) 101 mask |= POLLIN; 102 103 return mask; 104} 105 106 107static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw, 108 struct snd_hwdep_dsp_status *info) 109{ 110 static char *type_ids[USX2Y_TYPE_NUMS] = { 111 [USX2Y_TYPE_122] = "us122", 112 [USX2Y_TYPE_224] = "us224", 113 [USX2Y_TYPE_428] = "us428", 114 }; 115 struct usX2Ydev *us428 = hw->private_data; 116 int id = -1; 117 118 switch (le16_to_cpu(us428->dev->descriptor.idProduct)) { 119 case USB_ID_US122: 120 id = USX2Y_TYPE_122; 121 break; 122 case USB_ID_US224: 123 id = USX2Y_TYPE_224; 124 break; 125 case USB_ID_US428: 126 id = USX2Y_TYPE_428; 127 break; 128 } 129 if (0 > id) 130 return -ENODEV; 131 strcpy(info->id, type_ids[id]); 132 info->num_dsps = 2; // 0: Prepad Data, 1: FPGA Code 133 if (us428->chip_status & USX2Y_STAT_CHIP_INIT) 134 info->chip_ready = 1; 135 info->version = USX2Y_DRIVER_VERSION; 136 return 0; 137} 138 139 140static int usX2Y_create_usbmidi(struct snd_card *card) 141{ 142 static struct snd_usb_midi_endpoint_info quirk_data_1 = { 143 .out_ep = 0x06, 144 .in_ep = 0x06, 145 .out_cables = 0x001, 146 .in_cables = 0x001 147 }; 148 static struct snd_usb_audio_quirk quirk_1 = { 149 .vendor_name = "TASCAM", 150 .product_name = NAME_ALLCAPS, 151 .ifnum = 0, 152 .type = QUIRK_MIDI_FIXED_ENDPOINT, 153 .data = &quirk_data_1 154 }; 155 static struct snd_usb_midi_endpoint_info quirk_data_2 = { 156 .out_ep = 0x06, 157 .in_ep = 0x06, 158 .out_cables = 0x003, 159 .in_cables = 0x003 160 }; 161 static struct snd_usb_audio_quirk quirk_2 = { 162 .vendor_name = "TASCAM", 163 .product_name = "US428", 164 .ifnum = 0, 165 .type = QUIRK_MIDI_FIXED_ENDPOINT, 166 .data = &quirk_data_2 167 }; 168 struct usb_device *dev = usX2Y(card)->dev; 169 struct usb_interface *iface = usb_ifnum_to_if(dev, 0); 170 struct snd_usb_audio_quirk *quirk = 171 le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ? 172 &quirk_2 : &quirk_1; 173 174 snd_printdd("usX2Y_create_usbmidi \n"); 175 return snd_usbmidi_create(card, iface, &usX2Y(card)->midi_list, quirk); 176} 177 178static int usX2Y_create_alsa_devices(struct snd_card *card) 179{ 180 int err; 181 182 do { 183 if ((err = usX2Y_create_usbmidi(card)) < 0) { 184 snd_printk(KERN_ERR "usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err); 185 break; 186 } 187 if ((err = usX2Y_audio_create(card)) < 0) 188 break; 189 if ((err = usX2Y_hwdep_pcm_new(card)) < 0) 190 break; 191 if ((err = snd_card_register(card)) < 0) 192 break; 193 } while (0); 194 195 return err; 196} 197 198static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw, 199 struct snd_hwdep_dsp_image *dsp) 200{ 201 struct usX2Ydev *priv = hw->private_data; 202 int lret, err = -EINVAL; 203 snd_printdd( "dsp_load %s\n", dsp->name); 204 205 if (access_ok(VERIFY_READ, dsp->image, dsp->length)) { 206 struct usb_device* dev = priv->dev; 207 char *buf; 208 209 buf = memdup_user(dsp->image, dsp->length); 210 if (IS_ERR(buf)) 211 return PTR_ERR(buf); 212 213 err = usb_set_interface(dev, 0, 1); 214 if (err) 215 snd_printk(KERN_ERR "usb_set_interface error \n"); 216 else 217 err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000); 218 kfree(buf); 219 } 220 if (err) 221 return err; 222 if (dsp->index == 1) { 223 msleep(250); // give the device some time 224 err = usX2Y_AsyncSeq04_init(priv); 225 if (err) { 226 snd_printk(KERN_ERR "usX2Y_AsyncSeq04_init error \n"); 227 return err; 228 } 229 err = usX2Y_In04_init(priv); 230 if (err) { 231 snd_printk(KERN_ERR "usX2Y_In04_init error \n"); 232 return err; 233 } 234 err = usX2Y_create_alsa_devices(hw->card); 235 if (err) { 236 snd_printk(KERN_ERR "usX2Y_create_alsa_devices error %i \n", err); 237 snd_card_free(hw->card); 238 return err; 239 } 240 priv->chip_status |= USX2Y_STAT_CHIP_INIT; 241 snd_printdd("%s: alsa all started\n", hw->name); 242 } 243 return err; 244} 245 246 247int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device) 248{ 249 int err; 250 struct snd_hwdep *hw; 251 252 if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0) 253 return err; 254 255 hw->iface = SNDRV_HWDEP_IFACE_USX2Y; 256 hw->private_data = usX2Y(card); 257 hw->ops.dsp_status = snd_usX2Y_hwdep_dsp_status; 258 hw->ops.dsp_load = snd_usX2Y_hwdep_dsp_load; 259 hw->ops.mmap = snd_us428ctls_mmap; 260 hw->ops.poll = snd_us428ctls_poll; 261 hw->exclusive = 1; 262 sprintf(hw->name, "/proc/bus/usb/%03d/%03d", device->bus->busnum, device->devnum); 263 return 0; 264} 265 266