1 /* 2 * Driver for the VoIP USB phones with CM109 chipsets. 3 * 4 * Copyright (C) 2007 - 2008 Alfred E. Heggestad <aeh@db.org> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation, version 2. 9 */ 10 11 /* 12 * Tested devices: 13 * - Komunikate KIP1000 14 * - Genius G-talk 15 * - Allied-Telesis Corega USBPH01 16 * - ... 17 * 18 * This driver is based on the yealink.c driver 19 * 20 * Thanks to: 21 * - Authors of yealink.c 22 * - Thomas Reitmayr 23 * - Oliver Neukum for good review comments and code 24 * - Shaun Jackman <sjackman@gmail.com> for Genius G-talk keymap 25 * - Dmitry Torokhov for valuable input and review 26 * 27 * Todo: 28 * - Read/write EEPROM 29 */ 30 31 #include <linux/kernel.h> 32 #include <linux/init.h> 33 #include <linux/slab.h> 34 #include <linux/module.h> 35 #include <linux/moduleparam.h> 36 #include <linux/rwsem.h> 37 #include <linux/usb/input.h> 38 39 #define DRIVER_VERSION "20080805" 40 #define DRIVER_AUTHOR "Alfred E. Heggestad" 41 #define DRIVER_DESC "CM109 phone driver" 42 43 static char *phone = "kip1000"; 44 module_param(phone, charp, S_IRUSR); 45 MODULE_PARM_DESC(phone, "Phone name {kip1000, gtalk, usbph01, atcom}"); 46 47 enum { 48 /* HID Registers */ 49 HID_IR0 = 0x00, /* Record/Playback-mute button, Volume up/down */ 50 HID_IR1 = 0x01, /* GPI, generic registers or EEPROM_DATA0 */ 51 HID_IR2 = 0x02, /* Generic registers or EEPROM_DATA1 */ 52 HID_IR3 = 0x03, /* Generic registers or EEPROM_CTRL */ 53 HID_OR0 = 0x00, /* Mapping control, buzzer, SPDIF (offset 0x04) */ 54 HID_OR1 = 0x01, /* GPO - General Purpose Output */ 55 HID_OR2 = 0x02, /* Set GPIO to input/output mode */ 56 HID_OR3 = 0x03, /* SPDIF status channel or EEPROM_CTRL */ 57 58 /* HID_IR0 */ 59 RECORD_MUTE = 1 << 3, 60 PLAYBACK_MUTE = 1 << 2, 61 VOLUME_DOWN = 1 << 1, 62 VOLUME_UP = 1 << 0, 63 64 /* HID_OR0 */ 65 /* bits 7-6 66 0: HID_OR1-2 are used for GPO; HID_OR0, 3 are used for buzzer 67 and SPDIF 68 1: HID_OR0-3 are used as generic HID registers 69 2: Values written to HID_OR0-3 are also mapped to MCU_CTRL, 70 EEPROM_DATA0-1, EEPROM_CTRL (see Note) 71 3: Reserved 72 */ 73 HID_OR_GPO_BUZ_SPDIF = 0 << 6, 74 HID_OR_GENERIC_HID_REG = 1 << 6, 75 HID_OR_MAP_MCU_EEPROM = 2 << 6, 76 77 BUZZER_ON = 1 << 5, 78 79 /* up to 256 normal keys, up to 16 special keys */ 80 KEYMAP_SIZE = 256 + 16, 81 }; 82 83 /* CM109 protocol packet */ 84 struct cm109_ctl_packet { 85 u8 byte[4]; 86 } __attribute__ ((packed)); 87 88 enum { USB_PKT_LEN = sizeof(struct cm109_ctl_packet) }; 89 90 /* CM109 device structure */ 91 struct cm109_dev { 92 struct input_dev *idev; /* input device */ 93 struct usb_device *udev; /* usb device */ 94 struct usb_interface *intf; 95 96 /* irq input channel */ 97 struct cm109_ctl_packet *irq_data; 98 dma_addr_t irq_dma; 99 struct urb *urb_irq; 100 101 /* control output channel */ 102 struct cm109_ctl_packet *ctl_data; 103 dma_addr_t ctl_dma; 104 struct usb_ctrlrequest *ctl_req; 105 dma_addr_t ctl_req_dma; 106 struct urb *urb_ctl; 107 /* 108 * The 3 bitfields below are protected by ctl_submit_lock. 109 * They have to be separate since they are accessed from IRQ 110 * context. 111 */ 112 unsigned irq_urb_pending:1; /* irq_urb is in flight */ 113 unsigned ctl_urb_pending:1; /* ctl_urb is in flight */ 114 unsigned buzzer_pending:1; /* need to issue buzz command */ 115 spinlock_t ctl_submit_lock; 116 117 unsigned char buzzer_state; /* on/off */ 118 119 /* flags */ 120 unsigned open:1; 121 unsigned resetting:1; 122 unsigned shutdown:1; 123 124 /* This mutex protects writes to the above flags */ 125 struct mutex pm_mutex; 126 127 unsigned short keymap[KEYMAP_SIZE]; 128 129 char phys[64]; /* physical device path */ 130 int key_code; /* last reported key */ 131 int keybit; /* 0=new scan 1,2,4,8=scan columns */ 132 u8 gpi; /* Cached value of GPI (high nibble) */ 133 }; 134 135 /****************************************************************************** 136 * CM109 key interface 137 *****************************************************************************/ 138 139 static unsigned short special_keymap(int code) 140 { 141 if (code > 0xff) { 142 switch (code - 0xff) { 143 case RECORD_MUTE: return KEY_MUTE; 144 case PLAYBACK_MUTE: return KEY_MUTE; 145 case VOLUME_DOWN: return KEY_VOLUMEDOWN; 146 case VOLUME_UP: return KEY_VOLUMEUP; 147 } 148 } 149 return KEY_RESERVED; 150 } 151 152 /* Map device buttons to internal key events. 153 * 154 * The "up" and "down" keys, are symbolised by arrows on the button. 155 * The "pickup" and "hangup" keys are symbolised by a green and red phone 156 * on the button. 157 158 Komunikate KIP1000 Keyboard Matrix 159 160 -> -- 1 -- 2 -- 3 --> GPI pin 4 (0x10) 161 | | | | 162 <- -- 4 -- 5 -- 6 --> GPI pin 5 (0x20) 163 | | | | 164 END - 7 -- 8 -- 9 --> GPI pin 6 (0x40) 165 | | | | 166 OK -- * -- 0 -- # --> GPI pin 7 (0x80) 167 | | | | 168 169 /|\ /|\ /|\ /|\ 170 | | | | 171 GPO 172 pin: 3 2 1 0 173 0x8 0x4 0x2 0x1 174 175 */ 176 static unsigned short keymap_kip1000(int scancode) 177 { 178 switch (scancode) { /* phone key: */ 179 case 0x82: return KEY_NUMERIC_0; /* 0 */ 180 case 0x14: return KEY_NUMERIC_1; /* 1 */ 181 case 0x12: return KEY_NUMERIC_2; /* 2 */ 182 case 0x11: return KEY_NUMERIC_3; /* 3 */ 183 case 0x24: return KEY_NUMERIC_4; /* 4 */ 184 case 0x22: return KEY_NUMERIC_5; /* 5 */ 185 case 0x21: return KEY_NUMERIC_6; /* 6 */ 186 case 0x44: return KEY_NUMERIC_7; /* 7 */ 187 case 0x42: return KEY_NUMERIC_8; /* 8 */ 188 case 0x41: return KEY_NUMERIC_9; /* 9 */ 189 case 0x81: return KEY_NUMERIC_POUND; /* # */ 190 case 0x84: return KEY_NUMERIC_STAR; /* * */ 191 case 0x88: return KEY_ENTER; /* pickup */ 192 case 0x48: return KEY_ESC; /* hangup */ 193 case 0x28: return KEY_LEFT; /* IN */ 194 case 0x18: return KEY_RIGHT; /* OUT */ 195 default: return special_keymap(scancode); 196 } 197 } 198 199 /* 200 Contributed by Shaun Jackman <sjackman@gmail.com> 201 202 Genius G-Talk keyboard matrix 203 0 1 2 3 204 4: 0 4 8 Talk 205 5: 1 5 9 End 206 6: 2 6 # Up 207 7: 3 7 * Down 208 */ 209 static unsigned short keymap_gtalk(int scancode) 210 { 211 switch (scancode) { 212 case 0x11: return KEY_NUMERIC_0; 213 case 0x21: return KEY_NUMERIC_1; 214 case 0x41: return KEY_NUMERIC_2; 215 case 0x81: return KEY_NUMERIC_3; 216 case 0x12: return KEY_NUMERIC_4; 217 case 0x22: return KEY_NUMERIC_5; 218 case 0x42: return KEY_NUMERIC_6; 219 case 0x82: return KEY_NUMERIC_7; 220 case 0x14: return KEY_NUMERIC_8; 221 case 0x24: return KEY_NUMERIC_9; 222 case 0x44: return KEY_NUMERIC_POUND; /* # */ 223 case 0x84: return KEY_NUMERIC_STAR; /* * */ 224 case 0x18: return KEY_ENTER; /* Talk (green handset) */ 225 case 0x28: return KEY_ESC; /* End (red handset) */ 226 case 0x48: return KEY_UP; /* Menu up (rocker switch) */ 227 case 0x88: return KEY_DOWN; /* Menu down (rocker switch) */ 228 default: return special_keymap(scancode); 229 } 230 } 231 232 /* 233 * Keymap for Allied-Telesis Corega USBPH01 234 * http://www.alliedtelesis-corega.com/2/1344/1437/1360/chprd.html 235 * 236 * Contributed by july@nat.bg 237 */ 238 static unsigned short keymap_usbph01(int scancode) 239 { 240 switch (scancode) { 241 case 0x11: return KEY_NUMERIC_0; /* 0 */ 242 case 0x21: return KEY_NUMERIC_1; /* 1 */ 243 case 0x41: return KEY_NUMERIC_2; /* 2 */ 244 case 0x81: return KEY_NUMERIC_3; /* 3 */ 245 case 0x12: return KEY_NUMERIC_4; /* 4 */ 246 case 0x22: return KEY_NUMERIC_5; /* 5 */ 247 case 0x42: return KEY_NUMERIC_6; /* 6 */ 248 case 0x82: return KEY_NUMERIC_7; /* 7 */ 249 case 0x14: return KEY_NUMERIC_8; /* 8 */ 250 case 0x24: return KEY_NUMERIC_9; /* 9 */ 251 case 0x44: return KEY_NUMERIC_POUND; /* # */ 252 case 0x84: return KEY_NUMERIC_STAR; /* * */ 253 case 0x18: return KEY_ENTER; /* pickup */ 254 case 0x28: return KEY_ESC; /* hangup */ 255 case 0x48: return KEY_LEFT; /* IN */ 256 case 0x88: return KEY_RIGHT; /* OUT */ 257 default: return special_keymap(scancode); 258 } 259 } 260 261 /* 262 * Keymap for ATCom AU-100 263 * http://www.atcom.cn/En_products_AU100.html 264 * http://www.packetizer.com/products/au100/ 265 * http://www.voip-info.org/wiki/view/AU-100 266 * 267 * Contributed by daniel@gimpelevich.san-francisco.ca.us 268 */ 269 static unsigned short keymap_atcom(int scancode) 270 { 271 switch (scancode) { /* phone key: */ 272 case 0x82: return KEY_NUMERIC_0; /* 0 */ 273 case 0x11: return KEY_NUMERIC_1; /* 1 */ 274 case 0x12: return KEY_NUMERIC_2; /* 2 */ 275 case 0x14: return KEY_NUMERIC_3; /* 3 */ 276 case 0x21: return KEY_NUMERIC_4; /* 4 */ 277 case 0x22: return KEY_NUMERIC_5; /* 5 */ 278 case 0x24: return KEY_NUMERIC_6; /* 6 */ 279 case 0x41: return KEY_NUMERIC_7; /* 7 */ 280 case 0x42: return KEY_NUMERIC_8; /* 8 */ 281 case 0x44: return KEY_NUMERIC_9; /* 9 */ 282 case 0x84: return KEY_NUMERIC_POUND; /* # */ 283 case 0x81: return KEY_NUMERIC_STAR; /* * */ 284 case 0x18: return KEY_ENTER; /* pickup */ 285 case 0x28: return KEY_ESC; /* hangup */ 286 case 0x48: return KEY_LEFT; /* left arrow */ 287 case 0x88: return KEY_RIGHT; /* right arrow */ 288 default: return special_keymap(scancode); 289 } 290 } 291 292 static unsigned short (*keymap)(int) = keymap_kip1000; 293 294 /* 295 * Completes a request by converting the data into events for the 296 * input subsystem. 297 */ 298 static void report_key(struct cm109_dev *dev, int key) 299 { 300 struct input_dev *idev = dev->idev; 301 302 if (dev->key_code >= 0) { 303 /* old key up */ 304 input_report_key(idev, dev->key_code, 0); 305 } 306 307 dev->key_code = key; 308 if (key >= 0) { 309 /* new valid key */ 310 input_report_key(idev, key, 1); 311 } 312 313 input_sync(idev); 314 } 315 316 /****************************************************************************** 317 * CM109 usb communication interface 318 *****************************************************************************/ 319 320 static void cm109_submit_buzz_toggle(struct cm109_dev *dev) 321 { 322 int error; 323 324 if (dev->buzzer_state) 325 dev->ctl_data->byte[HID_OR0] |= BUZZER_ON; 326 else 327 dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON; 328 329 error = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC); 330 if (error) 331 err("%s: usb_submit_urb (urb_ctl) failed %d", __func__, error); 332 } 333 334 /* 335 * IRQ handler 336 */ 337 static void cm109_urb_irq_callback(struct urb *urb) 338 { 339 struct cm109_dev *dev = urb->context; 340 const int status = urb->status; 341 int error; 342 343 dev_dbg(&urb->dev->dev, "### URB IRQ: [0x%02x 0x%02x 0x%02x 0x%02x] keybit=0x%02x\n", 344 dev->irq_data->byte[0], 345 dev->irq_data->byte[1], 346 dev->irq_data->byte[2], 347 dev->irq_data->byte[3], 348 dev->keybit); 349 350 if (status) { 351 if (status == -ESHUTDOWN) 352 return; 353 err("%s: urb status %d", __func__, status); 354 } 355 356 /* Special keys */ 357 if (dev->irq_data->byte[HID_IR0] & 0x0f) { 358 const int code = (dev->irq_data->byte[HID_IR0] & 0x0f); 359 report_key(dev, dev->keymap[0xff + code]); 360 } 361 362 /* Scan key column */ 363 if (dev->keybit == 0xf) { 364 365 /* Any changes ? */ 366 if ((dev->gpi & 0xf0) == (dev->irq_data->byte[HID_IR1] & 0xf0)) 367 goto out; 368 369 dev->gpi = dev->irq_data->byte[HID_IR1] & 0xf0; 370 dev->keybit = 0x1; 371 } else { 372 report_key(dev, dev->keymap[dev->irq_data->byte[HID_IR1]]); 373 374 dev->keybit <<= 1; 375 if (dev->keybit > 0x8) 376 dev->keybit = 0xf; 377 } 378 379 out: 380 381 spin_lock(&dev->ctl_submit_lock); 382 383 dev->irq_urb_pending = 0; 384 385 if (likely(!dev->shutdown)) { 386 387 if (dev->buzzer_state) 388 dev->ctl_data->byte[HID_OR0] |= BUZZER_ON; 389 else 390 dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON; 391 392 dev->ctl_data->byte[HID_OR1] = dev->keybit; 393 dev->ctl_data->byte[HID_OR2] = dev->keybit; 394 395 dev->buzzer_pending = 0; 396 dev->ctl_urb_pending = 1; 397 398 error = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC); 399 if (error) 400 err("%s: usb_submit_urb (urb_ctl) failed %d", 401 __func__, error); 402 } 403 404 spin_unlock(&dev->ctl_submit_lock); 405 } 406 407 static void cm109_urb_ctl_callback(struct urb *urb) 408 { 409 struct cm109_dev *dev = urb->context; 410 const int status = urb->status; 411 int error; 412 413 dev_dbg(&urb->dev->dev, "### URB CTL: [0x%02x 0x%02x 0x%02x 0x%02x]\n", 414 dev->ctl_data->byte[0], 415 dev->ctl_data->byte[1], 416 dev->ctl_data->byte[2], 417 dev->ctl_data->byte[3]); 418 419 if (status) 420 err("%s: urb status %d", __func__, status); 421 422 spin_lock(&dev->ctl_submit_lock); 423 424 dev->ctl_urb_pending = 0; 425 426 if (likely(!dev->shutdown)) { 427 428 if (dev->buzzer_pending) { 429 dev->buzzer_pending = 0; 430 dev->ctl_urb_pending = 1; 431 cm109_submit_buzz_toggle(dev); 432 } else if (likely(!dev->irq_urb_pending)) { 433 /* ask for key data */ 434 dev->irq_urb_pending = 1; 435 error = usb_submit_urb(dev->urb_irq, GFP_ATOMIC); 436 if (error) 437 err("%s: usb_submit_urb (urb_irq) failed %d", 438 __func__, error); 439 } 440 } 441 442 spin_unlock(&dev->ctl_submit_lock); 443 } 444 445 static void cm109_toggle_buzzer_async(struct cm109_dev *dev) 446 { 447 unsigned long flags; 448 449 spin_lock_irqsave(&dev->ctl_submit_lock, flags); 450 451 if (dev->ctl_urb_pending) { 452 /* URB completion will resubmit */ 453 dev->buzzer_pending = 1; 454 } else { 455 dev->ctl_urb_pending = 1; 456 cm109_submit_buzz_toggle(dev); 457 } 458 459 spin_unlock_irqrestore(&dev->ctl_submit_lock, flags); 460 } 461 462 static void cm109_toggle_buzzer_sync(struct cm109_dev *dev, int on) 463 { 464 int error; 465 466 if (on) 467 dev->ctl_data->byte[HID_OR0] |= BUZZER_ON; 468 else 469 dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON; 470 471 error = usb_control_msg(dev->udev, 472 usb_sndctrlpipe(dev->udev, 0), 473 dev->ctl_req->bRequest, 474 dev->ctl_req->bRequestType, 475 le16_to_cpu(dev->ctl_req->wValue), 476 le16_to_cpu(dev->ctl_req->wIndex), 477 dev->ctl_data, 478 USB_PKT_LEN, USB_CTRL_SET_TIMEOUT); 479 if (error && error != EINTR) 480 err("%s: usb_control_msg() failed %d", __func__, error); 481 } 482 483 static void cm109_stop_traffic(struct cm109_dev *dev) 484 { 485 dev->shutdown = 1; 486 /* 487 * Make sure other CPUs see this 488 */ 489 smp_wmb(); 490 491 usb_kill_urb(dev->urb_ctl); 492 usb_kill_urb(dev->urb_irq); 493 494 cm109_toggle_buzzer_sync(dev, 0); 495 496 dev->shutdown = 0; 497 smp_wmb(); 498 } 499 500 static void cm109_restore_state(struct cm109_dev *dev) 501 { 502 if (dev->open) { 503 /* 504 * Restore buzzer state. 505 * This will also kick regular URB submission 506 */ 507 cm109_toggle_buzzer_async(dev); 508 } 509 } 510 511 /****************************************************************************** 512 * input event interface 513 *****************************************************************************/ 514 515 static int cm109_input_open(struct input_dev *idev) 516 { 517 struct cm109_dev *dev = input_get_drvdata(idev); 518 int error; 519 520 error = usb_autopm_get_interface(dev->intf); 521 if (error < 0) { 522 err("%s - cannot autoresume, result %d", 523 __func__, error); 524 return error; 525 } 526 527 mutex_lock(&dev->pm_mutex); 528 529 dev->buzzer_state = 0; 530 dev->key_code = -1; /* no keys pressed */ 531 dev->keybit = 0xf; 532 533 /* issue INIT */ 534 dev->ctl_data->byte[HID_OR0] = HID_OR_GPO_BUZ_SPDIF; 535 dev->ctl_data->byte[HID_OR1] = dev->keybit; 536 dev->ctl_data->byte[HID_OR2] = dev->keybit; 537 dev->ctl_data->byte[HID_OR3] = 0x00; 538 539 error = usb_submit_urb(dev->urb_ctl, GFP_KERNEL); 540 if (error) 541 err("%s: usb_submit_urb (urb_ctl) failed %d", __func__, error); 542 else 543 dev->open = 1; 544 545 mutex_unlock(&dev->pm_mutex); 546 547 if (error) 548 usb_autopm_put_interface(dev->intf); 549 550 return error; 551 } 552 553 static void cm109_input_close(struct input_dev *idev) 554 { 555 struct cm109_dev *dev = input_get_drvdata(idev); 556 557 mutex_lock(&dev->pm_mutex); 558 559 /* 560 * Once we are here event delivery is stopped so we 561 * don't need to worry about someone starting buzzer 562 * again 563 */ 564 cm109_stop_traffic(dev); 565 dev->open = 0; 566 567 mutex_unlock(&dev->pm_mutex); 568 569 usb_autopm_put_interface(dev->intf); 570 } 571 572 static int cm109_input_ev(struct input_dev *idev, unsigned int type, 573 unsigned int code, int value) 574 { 575 struct cm109_dev *dev = input_get_drvdata(idev); 576 577 dev_dbg(&dev->udev->dev, 578 "input_ev: type=%u code=%u value=%d\n", type, code, value); 579 580 if (type != EV_SND) 581 return -EINVAL; 582 583 switch (code) { 584 case SND_TONE: 585 case SND_BELL: 586 dev->buzzer_state = !!value; 587 if (!dev->resetting) 588 cm109_toggle_buzzer_async(dev); 589 return 0; 590 591 default: 592 return -EINVAL; 593 } 594 } 595 596 597 /****************************************************************************** 598 * Linux interface and usb initialisation 599 *****************************************************************************/ 600 601 struct driver_info { 602 char *name; 603 }; 604 605 static const struct driver_info info_cm109 = { 606 .name = "CM109 USB driver", 607 }; 608 609 enum { 610 VENDOR_ID = 0x0d8c, /* C-Media Electronics */ 611 PRODUCT_ID_CM109 = 0x000e, /* CM109 defines range 0x0008 - 0x000f */ 612 }; 613 614 /* table of devices that work with this driver */ 615 static const struct usb_device_id cm109_usb_table[] = { 616 { 617 .match_flags = USB_DEVICE_ID_MATCH_DEVICE | 618 USB_DEVICE_ID_MATCH_INT_INFO, 619 .idVendor = VENDOR_ID, 620 .idProduct = PRODUCT_ID_CM109, 621 .bInterfaceClass = USB_CLASS_HID, 622 .bInterfaceSubClass = 0, 623 .bInterfaceProtocol = 0, 624 .driver_info = (kernel_ulong_t) &info_cm109 625 }, 626 /* you can add more devices here with product ID 0x0008 - 0x000f */ 627 { } 628 }; 629 630 static void cm109_usb_cleanup(struct cm109_dev *dev) 631 { 632 if (dev->ctl_req) 633 usb_buffer_free(dev->udev, sizeof(*(dev->ctl_req)), 634 dev->ctl_req, dev->ctl_req_dma); 635 if (dev->ctl_data) 636 usb_buffer_free(dev->udev, USB_PKT_LEN, 637 dev->ctl_data, dev->ctl_dma); 638 if (dev->irq_data) 639 usb_buffer_free(dev->udev, USB_PKT_LEN, 640 dev->irq_data, dev->irq_dma); 641 642 usb_free_urb(dev->urb_irq); /* parameter validation in core/urb */ 643 usb_free_urb(dev->urb_ctl); /* parameter validation in core/urb */ 644 kfree(dev); 645 } 646 647 static void cm109_usb_disconnect(struct usb_interface *interface) 648 { 649 struct cm109_dev *dev = usb_get_intfdata(interface); 650 651 usb_set_intfdata(interface, NULL); 652 input_unregister_device(dev->idev); 653 cm109_usb_cleanup(dev); 654 } 655 656 static int cm109_usb_probe(struct usb_interface *intf, 657 const struct usb_device_id *id) 658 { 659 struct usb_device *udev = interface_to_usbdev(intf); 660 struct driver_info *nfo = (struct driver_info *)id->driver_info; 661 struct usb_host_interface *interface; 662 struct usb_endpoint_descriptor *endpoint; 663 struct cm109_dev *dev; 664 struct input_dev *input_dev = NULL; 665 int ret, pipe, i; 666 int error = -ENOMEM; 667 668 interface = intf->cur_altsetting; 669 endpoint = &interface->endpoint[0].desc; 670 671 if (!usb_endpoint_is_int_in(endpoint)) 672 return -ENODEV; 673 674 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 675 if (!dev) 676 return -ENOMEM; 677 678 spin_lock_init(&dev->ctl_submit_lock); 679 mutex_init(&dev->pm_mutex); 680 681 dev->udev = udev; 682 dev->intf = intf; 683 684 dev->idev = input_dev = input_allocate_device(); 685 if (!input_dev) 686 goto err_out; 687 688 /* allocate usb buffers */ 689 dev->irq_data = usb_buffer_alloc(udev, USB_PKT_LEN, 690 GFP_KERNEL, &dev->irq_dma); 691 if (!dev->irq_data) 692 goto err_out; 693 694 dev->ctl_data = usb_buffer_alloc(udev, USB_PKT_LEN, 695 GFP_KERNEL, &dev->ctl_dma); 696 if (!dev->ctl_data) 697 goto err_out; 698 699 dev->ctl_req = usb_buffer_alloc(udev, sizeof(*(dev->ctl_req)), 700 GFP_KERNEL, &dev->ctl_req_dma); 701 if (!dev->ctl_req) 702 goto err_out; 703 704 /* allocate urb structures */ 705 dev->urb_irq = usb_alloc_urb(0, GFP_KERNEL); 706 if (!dev->urb_irq) 707 goto err_out; 708 709 dev->urb_ctl = usb_alloc_urb(0, GFP_KERNEL); 710 if (!dev->urb_ctl) 711 goto err_out; 712 713 /* get a handle to the interrupt data pipe */ 714 pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress); 715 ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); 716 if (ret != USB_PKT_LEN) 717 err("invalid payload size %d, expected %d", ret, USB_PKT_LEN); 718 719 /* initialise irq urb */ 720 usb_fill_int_urb(dev->urb_irq, udev, pipe, dev->irq_data, 721 USB_PKT_LEN, 722 cm109_urb_irq_callback, dev, endpoint->bInterval); 723 dev->urb_irq->transfer_dma = dev->irq_dma; 724 dev->urb_irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 725 dev->urb_irq->dev = udev; 726 727 /* initialise ctl urb */ 728 dev->ctl_req->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | 729 USB_DIR_OUT; 730 dev->ctl_req->bRequest = USB_REQ_SET_CONFIGURATION; 731 dev->ctl_req->wValue = cpu_to_le16(0x200); 732 dev->ctl_req->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber); 733 dev->ctl_req->wLength = cpu_to_le16(USB_PKT_LEN); 734 735 usb_fill_control_urb(dev->urb_ctl, udev, usb_sndctrlpipe(udev, 0), 736 (void *)dev->ctl_req, dev->ctl_data, USB_PKT_LEN, 737 cm109_urb_ctl_callback, dev); 738 dev->urb_ctl->setup_dma = dev->ctl_req_dma; 739 dev->urb_ctl->transfer_dma = dev->ctl_dma; 740 dev->urb_ctl->transfer_flags |= URB_NO_SETUP_DMA_MAP | 741 URB_NO_TRANSFER_DMA_MAP; 742 dev->urb_ctl->dev = udev; 743 744 /* find out the physical bus location */ 745 usb_make_path(udev, dev->phys, sizeof(dev->phys)); 746 strlcat(dev->phys, "/input0", sizeof(dev->phys)); 747 748 /* register settings for the input device */ 749 input_dev->name = nfo->name; 750 input_dev->phys = dev->phys; 751 usb_to_input_id(udev, &input_dev->id); 752 input_dev->dev.parent = &intf->dev; 753 754 input_set_drvdata(input_dev, dev); 755 input_dev->open = cm109_input_open; 756 input_dev->close = cm109_input_close; 757 input_dev->event = cm109_input_ev; 758 759 input_dev->keycode = dev->keymap; 760 input_dev->keycodesize = sizeof(unsigned char); 761 input_dev->keycodemax = ARRAY_SIZE(dev->keymap); 762 763 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_SND); 764 input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); 765 766 /* register available key events */ 767 for (i = 0; i < KEYMAP_SIZE; i++) { 768 unsigned short k = keymap(i); 769 dev->keymap[i] = k; 770 __set_bit(k, input_dev->keybit); 771 } 772 __clear_bit(KEY_RESERVED, input_dev->keybit); 773 774 error = input_register_device(dev->idev); 775 if (error) 776 goto err_out; 777 778 usb_set_intfdata(intf, dev); 779 780 return 0; 781 782 err_out: 783 input_free_device(input_dev); 784 cm109_usb_cleanup(dev); 785 return error; 786 } 787 788 static int cm109_usb_suspend(struct usb_interface *intf, pm_message_t message) 789 { 790 struct cm109_dev *dev = usb_get_intfdata(intf); 791 792 dev_info(&intf->dev, "cm109: usb_suspend (event=%d)\n", message.event); 793 794 mutex_lock(&dev->pm_mutex); 795 cm109_stop_traffic(dev); 796 mutex_unlock(&dev->pm_mutex); 797 798 return 0; 799 } 800 801 static int cm109_usb_resume(struct usb_interface *intf) 802 { 803 struct cm109_dev *dev = usb_get_intfdata(intf); 804 805 dev_info(&intf->dev, "cm109: usb_resume\n"); 806 807 mutex_lock(&dev->pm_mutex); 808 cm109_restore_state(dev); 809 mutex_unlock(&dev->pm_mutex); 810 811 return 0; 812 } 813 814 static int cm109_usb_pre_reset(struct usb_interface *intf) 815 { 816 struct cm109_dev *dev = usb_get_intfdata(intf); 817 818 mutex_lock(&dev->pm_mutex); 819 820 /* 821 * Make sure input events don't try to toggle buzzer 822 * while we are resetting 823 */ 824 dev->resetting = 1; 825 smp_wmb(); 826 827 cm109_stop_traffic(dev); 828 829 return 0; 830 } 831 832 static int cm109_usb_post_reset(struct usb_interface *intf) 833 { 834 struct cm109_dev *dev = usb_get_intfdata(intf); 835 836 dev->resetting = 0; 837 smp_wmb(); 838 839 cm109_restore_state(dev); 840 841 mutex_unlock(&dev->pm_mutex); 842 843 return 0; 844 } 845 846 static struct usb_driver cm109_driver = { 847 .name = "cm109", 848 .probe = cm109_usb_probe, 849 .disconnect = cm109_usb_disconnect, 850 .suspend = cm109_usb_suspend, 851 .resume = cm109_usb_resume, 852 .reset_resume = cm109_usb_resume, 853 .pre_reset = cm109_usb_pre_reset, 854 .post_reset = cm109_usb_post_reset, 855 .id_table = cm109_usb_table, 856 .supports_autosuspend = 1, 857 }; 858 859 static int __init cm109_select_keymap(void) 860 { 861 /* Load the phone keymap */ 862 if (!strcasecmp(phone, "kip1000")) { 863 keymap = keymap_kip1000; 864 printk(KERN_INFO KBUILD_MODNAME ": " 865 "Keymap for Komunikate KIP1000 phone loaded\n"); 866 } else if (!strcasecmp(phone, "gtalk")) { 867 keymap = keymap_gtalk; 868 printk(KERN_INFO KBUILD_MODNAME ": " 869 "Keymap for Genius G-talk phone loaded\n"); 870 } else if (!strcasecmp(phone, "usbph01")) { 871 keymap = keymap_usbph01; 872 printk(KERN_INFO KBUILD_MODNAME ": " 873 "Keymap for Allied-Telesis Corega USBPH01 phone loaded\n"); 874 } else if (!strcasecmp(phone, "atcom")) { 875 keymap = keymap_atcom; 876 printk(KERN_INFO KBUILD_MODNAME ": " 877 "Keymap for ATCom AU-100 phone loaded\n"); 878 } else { 879 printk(KERN_ERR KBUILD_MODNAME ": " 880 "Unsupported phone: %s\n", phone); 881 return -EINVAL; 882 } 883 884 return 0; 885 } 886 887 static int __init cm109_init(void) 888 { 889 int err; 890 891 err = cm109_select_keymap(); 892 if (err) 893 return err; 894 895 err = usb_register(&cm109_driver); 896 if (err) 897 return err; 898 899 printk(KERN_INFO KBUILD_MODNAME ": " 900 DRIVER_DESC ": " DRIVER_VERSION " (C) " DRIVER_AUTHOR "\n"); 901 902 return 0; 903 } 904 905 static void __exit cm109_exit(void) 906 { 907 usb_deregister(&cm109_driver); 908 } 909 910 module_init(cm109_init); 911 module_exit(cm109_exit); 912 913 MODULE_DEVICE_TABLE(usb, cm109_usb_table); 914 915 MODULE_AUTHOR(DRIVER_AUTHOR); 916 MODULE_DESCRIPTION(DRIVER_DESC); 917 MODULE_LICENSE("GPL"); 918