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