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