Karsten Wiese | 030a07e | 2008-07-30 15:13:29 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License as published by the |
| 6 | * Free Software Foundation; either version 2 of the License, or (at your |
| 7 | * option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 11 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software Foundation, |
| 16 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 17 | */ |
| 18 | |
| 19 | #include <sound/core.h> |
| 20 | #include <sound/hwdep.h> |
| 21 | #include <sound/pcm.h> |
| 22 | #include <sound/initval.h> |
| 23 | #define MODNAME "US122L" |
| 24 | #include "usb_stream.c" |
| 25 | #include "../usbaudio.h" |
| 26 | #include "us122l.h" |
| 27 | |
| 28 | MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>"); |
| 29 | MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5"); |
| 30 | MODULE_LICENSE("GPL"); |
| 31 | |
| 32 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */ |
| 33 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */ |
| 34 | /* Enable this card */ |
| 35 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
| 36 | |
| 37 | module_param_array(index, int, NULL, 0444); |
| 38 | MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS"."); |
| 39 | module_param_array(id, charp, NULL, 0444); |
| 40 | MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS"."); |
| 41 | module_param_array(enable, bool, NULL, 0444); |
| 42 | MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS"."); |
| 43 | |
| 44 | static int snd_us122l_card_used[SNDRV_CARDS]; |
| 45 | |
| 46 | |
| 47 | static int us122l_create_usbmidi(struct snd_card *card) |
| 48 | { |
| 49 | static struct snd_usb_midi_endpoint_info quirk_data = { |
| 50 | .out_ep = 4, |
| 51 | .in_ep = 3, |
| 52 | .out_cables = 0x001, |
| 53 | .in_cables = 0x001 |
| 54 | }; |
| 55 | static struct snd_usb_audio_quirk quirk = { |
| 56 | .vendor_name = "US122L", |
| 57 | .product_name = NAME_ALLCAPS, |
| 58 | .ifnum = 1, |
| 59 | .type = QUIRK_MIDI_US122L, |
| 60 | .data = &quirk_data |
| 61 | }; |
| 62 | struct usb_device *dev = US122L(card)->chip.dev; |
| 63 | struct usb_interface *iface = usb_ifnum_to_if(dev, 1); |
| 64 | |
| 65 | return snd_usb_create_midi_interface(&US122L(card)->chip, |
| 66 | iface, &quirk); |
| 67 | } |
| 68 | |
| 69 | /* |
| 70 | * Wrapper for usb_control_msg(). |
| 71 | * Allocates a temp buffer to prevent dmaing from/to the stack. |
| 72 | */ |
| 73 | static int us122l_ctl_msg(struct usb_device *dev, unsigned int pipe, |
| 74 | __u8 request, __u8 requesttype, |
| 75 | __u16 value, __u16 index, void *data, |
| 76 | __u16 size, int timeout) |
| 77 | { |
| 78 | int err; |
| 79 | void *buf = NULL; |
| 80 | |
| 81 | if (size > 0) { |
| 82 | buf = kmemdup(data, size, GFP_KERNEL); |
| 83 | if (!buf) |
| 84 | return -ENOMEM; |
| 85 | } |
| 86 | err = usb_control_msg(dev, pipe, request, requesttype, |
| 87 | value, index, buf, size, timeout); |
| 88 | if (size > 0) { |
| 89 | memcpy(data, buf, size); |
| 90 | kfree(buf); |
| 91 | } |
| 92 | return err; |
| 93 | } |
| 94 | |
| 95 | static void pt_info_set(struct usb_device *dev, u8 v) |
| 96 | { |
| 97 | int ret; |
| 98 | |
| 99 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| 100 | 'I', |
| 101 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 102 | v, 0, NULL, 0, 1000); |
| 103 | snd_printdd(KERN_DEBUG "%i\n", ret); |
| 104 | } |
| 105 | |
| 106 | static void usb_stream_hwdep_vm_open(struct vm_area_struct *area) |
| 107 | { |
| 108 | struct us122l *us122l = area->vm_private_data; |
| 109 | atomic_inc(&us122l->mmap_count); |
| 110 | snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count)); |
| 111 | } |
| 112 | |
| 113 | static int usb_stream_hwdep_vm_fault(struct vm_area_struct *area, |
| 114 | struct vm_fault *vmf) |
| 115 | { |
| 116 | unsigned long offset; |
| 117 | struct page *page; |
| 118 | void *vaddr; |
| 119 | struct us122l *us122l = area->vm_private_data; |
| 120 | struct usb_stream *s; |
| 121 | int vm_f = VM_FAULT_SIGBUS; |
| 122 | |
| 123 | mutex_lock(&us122l->mutex); |
| 124 | s = us122l->sk.s; |
| 125 | if (!s) |
| 126 | goto out; |
| 127 | |
| 128 | offset = vmf->pgoff << PAGE_SHIFT; |
| 129 | if (offset < PAGE_ALIGN(s->read_size)) |
| 130 | vaddr = (char *)s + offset; |
| 131 | else { |
| 132 | offset -= PAGE_ALIGN(s->read_size); |
| 133 | if (offset >= PAGE_ALIGN(s->write_size)) |
| 134 | goto out; |
| 135 | |
| 136 | vaddr = us122l->sk.write_page + offset; |
| 137 | } |
| 138 | page = virt_to_page(vaddr); |
| 139 | |
| 140 | get_page(page); |
| 141 | mutex_unlock(&us122l->mutex); |
| 142 | |
| 143 | vmf->page = page; |
| 144 | vm_f = 0; |
| 145 | out: |
| 146 | return vm_f; |
| 147 | } |
| 148 | |
| 149 | static void usb_stream_hwdep_vm_close(struct vm_area_struct *area) |
| 150 | { |
| 151 | struct us122l *us122l = area->vm_private_data; |
| 152 | atomic_dec(&us122l->mmap_count); |
| 153 | snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count)); |
| 154 | } |
| 155 | |
| 156 | static struct vm_operations_struct usb_stream_hwdep_vm_ops = { |
| 157 | .open = usb_stream_hwdep_vm_open, |
| 158 | .fault = usb_stream_hwdep_vm_fault, |
| 159 | .close = usb_stream_hwdep_vm_close, |
| 160 | }; |
| 161 | |
| 162 | |
| 163 | static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file) |
| 164 | { |
| 165 | struct us122l *us122l = hw->private_data; |
| 166 | struct usb_interface *iface; |
| 167 | snd_printdd(KERN_DEBUG "%p %p\n", hw, file); |
| 168 | if (hw->used >= 2) |
| 169 | return -EBUSY; |
| 170 | |
| 171 | if (!us122l->first) |
| 172 | us122l->first = file; |
| 173 | iface = usb_ifnum_to_if(us122l->chip.dev, 1); |
| 174 | usb_autopm_get_interface(iface); |
| 175 | return 0; |
| 176 | } |
| 177 | |
| 178 | static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file) |
| 179 | { |
| 180 | struct us122l *us122l = hw->private_data; |
| 181 | struct usb_interface *iface = usb_ifnum_to_if(us122l->chip.dev, 1); |
| 182 | snd_printdd(KERN_DEBUG "%p %p\n", hw, file); |
| 183 | usb_autopm_put_interface(iface); |
| 184 | if (us122l->first == file) |
| 185 | us122l->first = NULL; |
| 186 | mutex_lock(&us122l->mutex); |
| 187 | if (us122l->master == file) |
| 188 | us122l->master = us122l->slave; |
| 189 | |
| 190 | us122l->slave = NULL; |
| 191 | mutex_unlock(&us122l->mutex); |
| 192 | return 0; |
| 193 | } |
| 194 | |
| 195 | static int usb_stream_hwdep_mmap(struct snd_hwdep *hw, |
| 196 | struct file *filp, struct vm_area_struct *area) |
| 197 | { |
| 198 | unsigned long size = area->vm_end - area->vm_start; |
| 199 | struct us122l *us122l = hw->private_data; |
| 200 | unsigned long offset; |
| 201 | struct usb_stream *s; |
| 202 | int err = 0; |
| 203 | bool read; |
| 204 | |
| 205 | offset = area->vm_pgoff << PAGE_SHIFT; |
| 206 | mutex_lock(&us122l->mutex); |
| 207 | s = us122l->sk.s; |
| 208 | read = offset < s->read_size; |
| 209 | if (read && area->vm_flags & VM_WRITE) { |
| 210 | err = -EPERM; |
| 211 | goto out; |
| 212 | } |
| 213 | snd_printdd(KERN_DEBUG "%lu %u\n", size, |
| 214 | read ? s->read_size : s->write_size); |
| 215 | /* if userspace tries to mmap beyond end of our buffer, fail */ |
| 216 | if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) { |
| 217 | snd_printk(KERN_WARNING "%lu > %u\n", size, |
| 218 | read ? s->read_size : s->write_size); |
| 219 | err = -EINVAL; |
| 220 | goto out; |
| 221 | } |
| 222 | |
| 223 | area->vm_ops = &usb_stream_hwdep_vm_ops; |
| 224 | area->vm_flags |= VM_RESERVED; |
| 225 | area->vm_private_data = us122l; |
| 226 | atomic_inc(&us122l->mmap_count); |
| 227 | out: |
| 228 | mutex_unlock(&us122l->mutex); |
| 229 | return err; |
| 230 | } |
| 231 | |
| 232 | static unsigned int usb_stream_hwdep_poll(struct snd_hwdep *hw, |
| 233 | struct file *file, poll_table *wait) |
| 234 | { |
| 235 | struct us122l *us122l = hw->private_data; |
| 236 | struct usb_stream *s = us122l->sk.s; |
| 237 | unsigned *polled; |
| 238 | unsigned int mask; |
| 239 | |
| 240 | poll_wait(file, &us122l->sk.sleep, wait); |
| 241 | |
| 242 | switch (s->state) { |
| 243 | case usb_stream_ready: |
| 244 | if (us122l->first == file) |
| 245 | polled = &s->periods_polled; |
| 246 | else |
| 247 | polled = &us122l->second_periods_polled; |
| 248 | if (*polled != s->periods_done) { |
| 249 | *polled = s->periods_done; |
| 250 | mask = POLLIN | POLLOUT | POLLWRNORM; |
| 251 | break; |
| 252 | } |
| 253 | /* Fall through */ |
| 254 | mask = 0; |
| 255 | break; |
| 256 | default: |
| 257 | mask = POLLIN | POLLOUT | POLLWRNORM | POLLERR; |
| 258 | break; |
| 259 | } |
| 260 | return mask; |
| 261 | } |
| 262 | |
| 263 | static void us122l_stop(struct us122l *us122l) |
| 264 | { |
| 265 | struct list_head *p; |
| 266 | list_for_each(p, &us122l->chip.midi_list) |
| 267 | snd_usbmidi_input_stop(p); |
| 268 | |
| 269 | usb_stream_stop(&us122l->sk); |
| 270 | usb_stream_free(&us122l->sk); |
| 271 | } |
| 272 | |
| 273 | static int us122l_set_sample_rate(struct usb_device *dev, int rate) |
| 274 | { |
| 275 | unsigned int ep = 0x81; |
| 276 | unsigned char data[3]; |
| 277 | int err; |
| 278 | |
| 279 | data[0] = rate; |
| 280 | data[1] = rate >> 8; |
| 281 | data[2] = rate >> 16; |
| 282 | err = us122l_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, |
| 283 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, |
| 284 | SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000); |
| 285 | if (err < 0) |
| 286 | snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n", |
| 287 | dev->devnum, rate, ep); |
| 288 | return err; |
| 289 | } |
| 290 | |
| 291 | static bool us122l_start(struct us122l *us122l, |
| 292 | unsigned rate, unsigned period_frames) |
| 293 | { |
| 294 | struct list_head *p; |
| 295 | int err; |
| 296 | unsigned use_packsize = 0; |
| 297 | bool success = false; |
| 298 | |
| 299 | if (us122l->chip.dev->speed == USB_SPEED_HIGH) { |
| 300 | /* The us-122l's descriptor defaults to iso max_packsize 78, |
| 301 | which isn't needed for samplerates <= 48000. |
| 302 | Lets save some memory: |
| 303 | */ |
| 304 | switch (rate) { |
| 305 | case 44100: |
| 306 | use_packsize = 36; |
| 307 | break; |
| 308 | case 48000: |
| 309 | use_packsize = 42; |
| 310 | break; |
| 311 | case 88200: |
| 312 | use_packsize = 72; |
| 313 | break; |
| 314 | } |
| 315 | } |
| 316 | if (!usb_stream_new(&us122l->sk, us122l->chip.dev, 1, 2, |
| 317 | rate, use_packsize, period_frames, 6)) |
| 318 | goto out; |
| 319 | |
| 320 | err = us122l_set_sample_rate(us122l->chip.dev, rate); |
| 321 | if (err < 0) { |
| 322 | us122l_stop(us122l); |
| 323 | snd_printk(KERN_ERR "us122l_set_sample_rate error \n"); |
| 324 | goto out; |
| 325 | } |
| 326 | err = usb_stream_start(&us122l->sk); |
| 327 | if (err < 0) { |
| 328 | us122l_stop(us122l); |
| 329 | snd_printk(KERN_ERR "us122l_start error %i \n", err); |
| 330 | goto out; |
| 331 | } |
| 332 | list_for_each(p, &us122l->chip.midi_list) |
| 333 | snd_usbmidi_input_start(p); |
| 334 | success = true; |
| 335 | out: |
| 336 | return success; |
| 337 | } |
| 338 | |
| 339 | static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file, |
| 340 | unsigned cmd, unsigned long arg) |
| 341 | { |
| 342 | struct usb_stream_config *cfg; |
| 343 | struct us122l *us122l = hw->private_data; |
| 344 | unsigned min_period_frames; |
| 345 | int err = 0; |
| 346 | bool high_speed; |
| 347 | |
| 348 | if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS) |
| 349 | return -ENOTTY; |
| 350 | |
| 351 | cfg = kmalloc(sizeof(*cfg), GFP_KERNEL); |
| 352 | if (!cfg) |
| 353 | return -ENOMEM; |
| 354 | |
| 355 | if (copy_from_user(cfg, (void *)arg, sizeof(*cfg))) { |
| 356 | err = -EFAULT; |
| 357 | goto free; |
| 358 | } |
| 359 | if (cfg->version != USB_STREAM_INTERFACE_VERSION) { |
| 360 | err = -ENXIO; |
| 361 | goto free; |
| 362 | } |
| 363 | high_speed = us122l->chip.dev->speed == USB_SPEED_HIGH; |
| 364 | if ((cfg->sample_rate != 44100 && cfg->sample_rate != 48000 && |
| 365 | (!high_speed || |
| 366 | (cfg->sample_rate != 88200 && cfg->sample_rate != 96000))) || |
| 367 | cfg->frame_size != 6 || |
| 368 | cfg->period_frames > 0x3000) { |
| 369 | err = -EINVAL; |
| 370 | goto free; |
| 371 | } |
| 372 | switch (cfg->sample_rate) { |
| 373 | case 44100: |
| 374 | min_period_frames = 48; |
| 375 | break; |
| 376 | case 48000: |
| 377 | min_period_frames = 52; |
| 378 | break; |
| 379 | default: |
| 380 | min_period_frames = 104; |
| 381 | break; |
| 382 | } |
| 383 | if (!high_speed) |
| 384 | min_period_frames <<= 1; |
| 385 | if (cfg->period_frames < min_period_frames) { |
| 386 | err = -EINVAL; |
| 387 | goto free; |
| 388 | } |
| 389 | |
| 390 | snd_power_wait(hw->card, SNDRV_CTL_POWER_D0); |
| 391 | |
| 392 | mutex_lock(&us122l->mutex); |
| 393 | if (!us122l->master) |
| 394 | us122l->master = file; |
| 395 | else if (us122l->master != file) { |
| 396 | if (memcmp(cfg, &us122l->sk.s->cfg, sizeof(*cfg))) { |
| 397 | err = -EIO; |
| 398 | goto unlock; |
| 399 | } |
| 400 | us122l->slave = file; |
| 401 | } |
| 402 | if (!us122l->sk.s || |
| 403 | memcmp(cfg, &us122l->sk.s->cfg, sizeof(*cfg)) || |
| 404 | us122l->sk.s->state == usb_stream_xrun) { |
| 405 | us122l_stop(us122l); |
| 406 | if (!us122l_start(us122l, cfg->sample_rate, cfg->period_frames)) |
| 407 | err = -EIO; |
| 408 | else |
| 409 | err = 1; |
| 410 | } |
| 411 | unlock: |
| 412 | mutex_unlock(&us122l->mutex); |
| 413 | free: |
| 414 | kfree(cfg); |
| 415 | return err; |
| 416 | } |
| 417 | |
| 418 | #define SND_USB_STREAM_ID "USB STREAM" |
| 419 | static int usb_stream_hwdep_new(struct snd_card *card) |
| 420 | { |
| 421 | int err; |
| 422 | struct snd_hwdep *hw; |
| 423 | struct usb_device *dev = US122L(card)->chip.dev; |
| 424 | |
| 425 | err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw); |
| 426 | if (err < 0) |
| 427 | return err; |
| 428 | |
| 429 | hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM; |
| 430 | hw->private_data = US122L(card); |
| 431 | hw->ops.open = usb_stream_hwdep_open; |
| 432 | hw->ops.release = usb_stream_hwdep_release; |
| 433 | hw->ops.ioctl = usb_stream_hwdep_ioctl; |
| 434 | hw->ops.ioctl_compat = usb_stream_hwdep_ioctl; |
| 435 | hw->ops.mmap = usb_stream_hwdep_mmap; |
| 436 | hw->ops.poll = usb_stream_hwdep_poll; |
| 437 | |
| 438 | sprintf(hw->name, "/proc/bus/usb/%03d/%03d/hwdeppcm", |
| 439 | dev->bus->busnum, dev->devnum); |
| 440 | return 0; |
| 441 | } |
| 442 | |
| 443 | |
| 444 | static bool us122l_create_card(struct snd_card *card) |
| 445 | { |
| 446 | int err; |
| 447 | struct us122l *us122l = US122L(card); |
| 448 | |
| 449 | err = usb_set_interface(us122l->chip.dev, 1, 1); |
| 450 | if (err) { |
| 451 | snd_printk(KERN_ERR "usb_set_interface error \n"); |
| 452 | return false; |
| 453 | } |
| 454 | |
| 455 | pt_info_set(us122l->chip.dev, 0x11); |
| 456 | pt_info_set(us122l->chip.dev, 0x10); |
| 457 | |
| 458 | if (!us122l_start(us122l, 44100, 256)) |
| 459 | return false; |
| 460 | |
| 461 | err = us122l_create_usbmidi(card); |
| 462 | if (err < 0) { |
| 463 | snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err); |
| 464 | us122l_stop(us122l); |
| 465 | return false; |
| 466 | } |
| 467 | err = usb_stream_hwdep_new(card); |
| 468 | if (err < 0) { |
| 469 | /* release the midi resources */ |
| 470 | struct list_head *p; |
| 471 | list_for_each(p, &us122l->chip.midi_list) |
| 472 | snd_usbmidi_disconnect(p); |
| 473 | |
| 474 | us122l_stop(us122l); |
| 475 | return false; |
| 476 | } |
| 477 | return true; |
| 478 | } |
| 479 | |
| 480 | static struct snd_card *usx2y_create_card(struct usb_device *device) |
| 481 | { |
| 482 | int dev; |
| 483 | struct snd_card *card; |
| 484 | for (dev = 0; dev < SNDRV_CARDS; ++dev) |
| 485 | if (enable[dev] && !snd_us122l_card_used[dev]) |
| 486 | break; |
| 487 | if (dev >= SNDRV_CARDS) |
| 488 | return NULL; |
| 489 | card = snd_card_new(index[dev], id[dev], THIS_MODULE, |
| 490 | sizeof(struct us122l)); |
| 491 | if (!card) |
| 492 | return NULL; |
| 493 | snd_us122l_card_used[US122L(card)->chip.index = dev] = 1; |
| 494 | |
| 495 | US122L(card)->chip.dev = device; |
| 496 | US122L(card)->chip.card = card; |
| 497 | mutex_init(&US122L(card)->mutex); |
| 498 | init_waitqueue_head(&US122L(card)->sk.sleep); |
| 499 | INIT_LIST_HEAD(&US122L(card)->chip.midi_list); |
| 500 | strcpy(card->driver, "USB "NAME_ALLCAPS""); |
| 501 | sprintf(card->shortname, "TASCAM "NAME_ALLCAPS""); |
| 502 | sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)", |
| 503 | card->shortname, |
| 504 | le16_to_cpu(device->descriptor.idVendor), |
| 505 | le16_to_cpu(device->descriptor.idProduct), |
| 506 | 0, |
| 507 | US122L(card)->chip.dev->bus->busnum, |
| 508 | US122L(card)->chip.dev->devnum |
| 509 | ); |
| 510 | snd_card_set_dev(card, &device->dev); |
| 511 | return card; |
| 512 | } |
| 513 | |
| 514 | static void *us122l_usb_probe(struct usb_interface *intf, |
| 515 | const struct usb_device_id *device_id) |
| 516 | { |
| 517 | struct usb_device *device = interface_to_usbdev(intf); |
| 518 | struct snd_card *card = usx2y_create_card(device); |
| 519 | |
| 520 | if (!card) |
| 521 | return NULL; |
| 522 | |
| 523 | if (!us122l_create_card(card) || |
| 524 | snd_card_register(card) < 0) { |
| 525 | snd_card_free(card); |
| 526 | return NULL; |
| 527 | } |
| 528 | |
| 529 | usb_get_dev(device); |
| 530 | return card; |
| 531 | } |
| 532 | |
| 533 | static int snd_us122l_probe(struct usb_interface *intf, |
| 534 | const struct usb_device_id *id) |
| 535 | { |
| 536 | struct snd_card *card; |
| 537 | snd_printdd(KERN_DEBUG"%p:%i\n", |
| 538 | intf, intf->cur_altsetting->desc.bInterfaceNumber); |
| 539 | if (intf->cur_altsetting->desc.bInterfaceNumber != 1) |
| 540 | return 0; |
| 541 | |
| 542 | card = us122l_usb_probe(usb_get_intf(intf), id); |
| 543 | |
| 544 | if (card) { |
| 545 | usb_set_intfdata(intf, card); |
| 546 | return 0; |
| 547 | } |
| 548 | |
| 549 | usb_put_intf(intf); |
| 550 | return -EIO; |
| 551 | } |
| 552 | |
| 553 | static void snd_us122l_disconnect(struct usb_interface *intf) |
| 554 | { |
| 555 | struct snd_card *card; |
| 556 | struct us122l *us122l; |
| 557 | struct list_head *p; |
| 558 | |
| 559 | card = usb_get_intfdata(intf); |
| 560 | if (!card) |
| 561 | return; |
| 562 | |
| 563 | snd_card_disconnect(card); |
| 564 | |
| 565 | us122l = US122L(card); |
| 566 | mutex_lock(&us122l->mutex); |
| 567 | us122l_stop(us122l); |
| 568 | mutex_unlock(&us122l->mutex); |
| 569 | us122l->chip.shutdown = 1; |
| 570 | |
| 571 | /* release the midi resources */ |
| 572 | list_for_each(p, &us122l->chip.midi_list) { |
| 573 | snd_usbmidi_disconnect(p); |
| 574 | } |
| 575 | |
| 576 | usb_put_intf(intf); |
| 577 | usb_put_dev(US122L(card)->chip.dev); |
| 578 | |
| 579 | while (atomic_read(&us122l->mmap_count)) |
| 580 | msleep(500); |
| 581 | |
| 582 | snd_card_free(card); |
| 583 | } |
| 584 | |
| 585 | static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message) |
| 586 | { |
| 587 | struct snd_card *card; |
| 588 | struct us122l *us122l; |
| 589 | struct list_head *p; |
| 590 | |
| 591 | card = dev_get_drvdata(&intf->dev); |
| 592 | if (!card) |
| 593 | return 0; |
| 594 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
| 595 | |
| 596 | us122l = US122L(card); |
| 597 | if (!us122l) |
| 598 | return 0; |
| 599 | |
| 600 | list_for_each(p, &us122l->chip.midi_list) |
| 601 | snd_usbmidi_input_stop(p); |
| 602 | |
| 603 | mutex_lock(&us122l->mutex); |
| 604 | usb_stream_stop(&us122l->sk); |
| 605 | mutex_unlock(&us122l->mutex); |
| 606 | |
| 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | static int snd_us122l_resume(struct usb_interface *intf) |
| 611 | { |
| 612 | struct snd_card *card; |
| 613 | struct us122l *us122l; |
| 614 | struct list_head *p; |
| 615 | int err; |
| 616 | |
| 617 | card = dev_get_drvdata(&intf->dev); |
| 618 | if (!card) |
| 619 | return 0; |
| 620 | |
| 621 | us122l = US122L(card); |
| 622 | if (!us122l) |
| 623 | return 0; |
| 624 | |
| 625 | mutex_lock(&us122l->mutex); |
| 626 | /* needed, doesn't restart without: */ |
| 627 | err = usb_set_interface(us122l->chip.dev, 1, 1); |
| 628 | if (err) { |
| 629 | snd_printk(KERN_ERR "usb_set_interface error \n"); |
| 630 | goto unlock; |
| 631 | } |
| 632 | |
| 633 | pt_info_set(us122l->chip.dev, 0x11); |
| 634 | pt_info_set(us122l->chip.dev, 0x10); |
| 635 | |
| 636 | err = us122l_set_sample_rate(us122l->chip.dev, |
| 637 | us122l->sk.s->cfg.sample_rate); |
| 638 | if (err < 0) { |
| 639 | snd_printk(KERN_ERR "us122l_set_sample_rate error \n"); |
| 640 | goto unlock; |
| 641 | } |
| 642 | err = usb_stream_start(&us122l->sk); |
| 643 | if (err) |
| 644 | goto unlock; |
| 645 | |
| 646 | list_for_each(p, &us122l->chip.midi_list) |
| 647 | snd_usbmidi_input_start(p); |
| 648 | unlock: |
| 649 | mutex_unlock(&us122l->mutex); |
| 650 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
| 651 | return err; |
| 652 | } |
| 653 | |
| 654 | static struct usb_device_id snd_us122l_usb_id_table[] = { |
| 655 | { |
| 656 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE, |
| 657 | .idVendor = 0x0644, |
| 658 | .idProduct = USB_ID_US122L |
| 659 | }, |
| 660 | /* { */ /* US-144 maybe works when @USB1.1. Untested. */ |
| 661 | /* .match_flags = USB_DEVICE_ID_MATCH_DEVICE, */ |
| 662 | /* .idVendor = 0x0644, */ |
| 663 | /* .idProduct = USB_ID_US144 */ |
| 664 | /* }, */ |
| 665 | { /* terminator */ } |
| 666 | }; |
| 667 | |
| 668 | MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table); |
| 669 | static struct usb_driver snd_us122l_usb_driver = { |
| 670 | .name = "snd-usb-us122l", |
| 671 | .probe = snd_us122l_probe, |
| 672 | .disconnect = snd_us122l_disconnect, |
| 673 | .suspend = snd_us122l_suspend, |
| 674 | .resume = snd_us122l_resume, |
| 675 | .reset_resume = snd_us122l_resume, |
| 676 | .id_table = snd_us122l_usb_id_table, |
| 677 | .supports_autosuspend = 1 |
| 678 | }; |
| 679 | |
| 680 | |
| 681 | static int __init snd_us122l_module_init(void) |
| 682 | { |
| 683 | return usb_register(&snd_us122l_usb_driver); |
| 684 | } |
| 685 | |
| 686 | static void __exit snd_us122l_module_exit(void) |
| 687 | { |
| 688 | usb_deregister(&snd_us122l_usb_driver); |
| 689 | } |
| 690 | |
| 691 | module_init(snd_us122l_module_init) |
| 692 | module_exit(snd_us122l_module_exit) |