drivers/input/misc/cm109.c

   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");