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/usb.h> 25 #include <sound/core.h> 26 #include <sound/memalloc.h> 27 #include <sound/pcm.h> 28 #include <sound/hwdep.h> 29 #include "usx2y.h" 30 #include "usbusx2y.h" 31 #include "usX2Yhwdep.h" 32 33 int usX2Y_hwdep_pcm_new(struct snd_card *card); 34 35 36 static int snd_us428ctls_vm_fault(struct vm_area_struct *area, 37 struct vm_fault *vmf) 38 { 39 unsigned long offset; 40 struct page * page; 41 void *vaddr; 42 43 snd_printdd("ENTER, start %lXh, pgoff %ld\n", 44 area->vm_start, 45 vmf->pgoff); 46 47 offset = vmf->pgoff << PAGE_SHIFT; 48 vaddr = (char*)((struct usX2Ydev *)area->vm_private_data)->us428ctls_sharedmem + offset; 49 page = virt_to_page(vaddr); 50 get_page(page); 51 vmf->page = page; 52 53 snd_printdd("vaddr=%p made us428ctls_vm_fault() page %p\n", 54 vaddr, page); 55 56 return 0; 57 } 58 59 static struct vm_operations_struct us428ctls_vm_ops = { 60 .fault = snd_us428ctls_vm_fault, 61 }; 62 63 static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area) 64 { 65 unsigned long size = (unsigned long)(area->vm_end - area->vm_start); 66 struct usX2Ydev *us428 = hw->private_data; 67 68 // FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs? 69 // so as long as the device isn't fully initialised yet we return -EBUSY here. 70 if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT)) 71 return -EBUSY; 72 73 /* if userspace tries to mmap beyond end of our buffer, fail */ 74 if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) { 75 snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem)); 76 return -EINVAL; 77 } 78 79 if (!us428->us428ctls_sharedmem) { 80 init_waitqueue_head(&us428->us428ctls_wait_queue_head); 81 if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(struct us428ctls_sharedmem), GFP_KERNEL))) 82 return -ENOMEM; 83 memset(us428->us428ctls_sharedmem, -1, sizeof(struct us428ctls_sharedmem)); 84 us428->us428ctls_sharedmem->CtlSnapShotLast = -2; 85 } 86 area->vm_ops = &us428ctls_vm_ops; 87 area->vm_flags |= VM_RESERVED | VM_DONTEXPAND; 88 area->vm_private_data = hw->private_data; 89 return 0; 90 } 91 92 static unsigned int snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait) 93 { 94 unsigned int mask = 0; 95 struct usX2Ydev *us428 = hw->private_data; 96 struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem; 97 if (us428->chip_status & USX2Y_STAT_CHIP_HUP) 98 return POLLHUP; 99 100 poll_wait(file, &us428->us428ctls_wait_queue_head, wait); 101 102 if (shm != NULL && shm->CtlSnapShotLast != shm->CtlSnapShotRed) 103 mask |= POLLIN; 104 105 return mask; 106 } 107 108 109 static int snd_usX2Y_hwdep_open(struct snd_hwdep *hw, struct file *file) 110 { 111 return 0; 112 } 113 114 static int snd_usX2Y_hwdep_release(struct snd_hwdep *hw, struct file *file) 115 { 116 return 0; 117 } 118 119 static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw, 120 struct snd_hwdep_dsp_status *info) 121 { 122 static char *type_ids[USX2Y_TYPE_NUMS] = { 123 [USX2Y_TYPE_122] = "us122", 124 [USX2Y_TYPE_224] = "us224", 125 [USX2Y_TYPE_428] = "us428", 126 }; 127 struct usX2Ydev *us428 = hw->private_data; 128 int id = -1; 129 130 switch (le16_to_cpu(us428->chip.dev->descriptor.idProduct)) { 131 case USB_ID_US122: 132 id = USX2Y_TYPE_122; 133 break; 134 case USB_ID_US224: 135 id = USX2Y_TYPE_224; 136 break; 137 case USB_ID_US428: 138 id = USX2Y_TYPE_428; 139 break; 140 } 141 if (0 > id) 142 return -ENODEV; 143 strcpy(info->id, type_ids[id]); 144 info->num_dsps = 2; // 0: Prepad Data, 1: FPGA Code 145 if (us428->chip_status & USX2Y_STAT_CHIP_INIT) 146 info->chip_ready = 1; 147 info->version = USX2Y_DRIVER_VERSION; 148 return 0; 149 } 150 151 152 static int usX2Y_create_usbmidi(struct snd_card *card) 153 { 154 static struct snd_usb_midi_endpoint_info quirk_data_1 = { 155 .out_ep = 0x06, 156 .in_ep = 0x06, 157 .out_cables = 0x001, 158 .in_cables = 0x001 159 }; 160 static struct snd_usb_audio_quirk quirk_1 = { 161 .vendor_name = "TASCAM", 162 .product_name = NAME_ALLCAPS, 163 .ifnum = 0, 164 .type = QUIRK_MIDI_FIXED_ENDPOINT, 165 .data = &quirk_data_1 166 }; 167 static struct snd_usb_midi_endpoint_info quirk_data_2 = { 168 .out_ep = 0x06, 169 .in_ep = 0x06, 170 .out_cables = 0x003, 171 .in_cables = 0x003 172 }; 173 static struct snd_usb_audio_quirk quirk_2 = { 174 .vendor_name = "TASCAM", 175 .product_name = "US428", 176 .ifnum = 0, 177 .type = QUIRK_MIDI_FIXED_ENDPOINT, 178 .data = &quirk_data_2 179 }; 180 struct usb_device *dev = usX2Y(card)->chip.dev; 181 struct usb_interface *iface = usb_ifnum_to_if(dev, 0); 182 struct snd_usb_audio_quirk *quirk = 183 le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ? 184 &quirk_2 : &quirk_1; 185 186 snd_printdd("usX2Y_create_usbmidi \n"); 187 return snd_usb_create_midi_interface(&usX2Y(card)->chip, iface, quirk); 188 } 189 190 static int usX2Y_create_alsa_devices(struct snd_card *card) 191 { 192 int err; 193 194 do { 195 if ((err = usX2Y_create_usbmidi(card)) < 0) { 196 snd_printk(KERN_ERR "usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err); 197 break; 198 } 199 if ((err = usX2Y_audio_create(card)) < 0) 200 break; 201 if ((err = usX2Y_hwdep_pcm_new(card)) < 0) 202 break; 203 if ((err = snd_card_register(card)) < 0) 204 break; 205 } while (0); 206 207 return err; 208 } 209 210 static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw, 211 struct snd_hwdep_dsp_image *dsp) 212 { 213 struct usX2Ydev *priv = hw->private_data; 214 int lret, err = -EINVAL; 215 snd_printdd( "dsp_load %s\n", dsp->name); 216 217 if (access_ok(VERIFY_READ, dsp->image, dsp->length)) { 218 struct usb_device* dev = priv->chip.dev; 219 char *buf = kmalloc(dsp->length, GFP_KERNEL); 220 if (!buf) 221 return -ENOMEM; 222 if (copy_from_user(buf, dsp->image, dsp->length)) { 223 kfree(buf); 224 return -EFAULT; 225 } 226 err = usb_set_interface(dev, 0, 1); 227 if (err) 228 snd_printk(KERN_ERR "usb_set_interface error \n"); 229 else 230 err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000); 231 kfree(buf); 232 } 233 if (err) 234 return err; 235 if (dsp->index == 1) { 236 msleep(250); // give the device some time 237 err = usX2Y_AsyncSeq04_init(priv); 238 if (err) { 239 snd_printk(KERN_ERR "usX2Y_AsyncSeq04_init error \n"); 240 return err; 241 } 242 err = usX2Y_In04_init(priv); 243 if (err) { 244 snd_printk(KERN_ERR "usX2Y_In04_init error \n"); 245 return err; 246 } 247 err = usX2Y_create_alsa_devices(hw->card); 248 if (err) { 249 snd_printk(KERN_ERR "usX2Y_create_alsa_devices error %i \n", err); 250 snd_card_free(hw->card); 251 return err; 252 } 253 priv->chip_status |= USX2Y_STAT_CHIP_INIT; 254 snd_printdd("%s: alsa all started\n", hw->name); 255 } 256 return err; 257 } 258 259 260 int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device) 261 { 262 int err; 263 struct snd_hwdep *hw; 264 265 if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0) 266 return err; 267 268 hw->iface = SNDRV_HWDEP_IFACE_USX2Y; 269 hw->private_data = usX2Y(card); 270 hw->ops.open = snd_usX2Y_hwdep_open; 271 hw->ops.release = snd_usX2Y_hwdep_release; 272 hw->ops.dsp_status = snd_usX2Y_hwdep_dsp_status; 273 hw->ops.dsp_load = snd_usX2Y_hwdep_dsp_load; 274 hw->ops.mmap = snd_us428ctls_mmap; 275 hw->ops.poll = snd_us428ctls_poll; 276 hw->exclusive = 1; 277 sprintf(hw->name, "/proc/bus/usb/%03d/%03d", device->bus->busnum, device->devnum); 278 return 0; 279 } 280 281