drivers/misc/sony-laptop.c

   1 /*
   2  * ACPI Sony Notebook Control Driver (SNC and SPIC)
   3  *
   4  * Copyright (C) 2004-2005 Stelian Pop <stelian@popies.net>
   5  * Copyright (C) 2007 Mattia Dongili <malattia@linux.it>
   6  *
   7  * Parts of this driver inspired from asus_acpi.c and ibm_acpi.c
   8  * which are copyrighted by their respective authors.
   9  *
  10  * The SNY6001 driver part is based on the sonypi driver which includes
  11  * material from:
  12  *
  13  * Copyright (C) 2001-2005 Stelian Pop <stelian@popies.net>
  14  *
  15  * Copyright (C) 2005 Narayanan R S <nars@kadamba.org>
  16  *
  17  * Copyright (C) 2001-2002 Alcôve <www.alcove.com>
  18  *
  19  * Copyright (C) 2001 Michael Ashley <m.ashley@unsw.edu.au>
  20  *
  21  * Copyright (C) 2001 Junichi Morita <jun1m@mars.dti.ne.jp>
  22  *
  23  * Copyright (C) 2000 Takaya Kinjo <t-kinjo@tc4.so-net.ne.jp>
  24  *
  25  * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
  26  *
  27  * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
  28  *
  29  * This program is free software; you can redistribute it and/or modify
  30  * it under the terms of the GNU General Public License as published by
  31  * the Free Software Foundation; either version 2 of the License, or
  32  * (at your option) any later version.
  33  *
  34  * This program is distributed in the hope that it will be useful,
  35  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  36  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  37  * GNU General Public License for more details.
  38  *
  39  * You should have received a copy of the GNU General Public License
  40  * along with this program; if not, write to the Free Software
  41  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  42  *
  43  */
  44
  45 #include <linux/kernel.h>
  46 #include <linux/module.h>
  47 #include <linux/moduleparam.h>
  48 #include <linux/init.h>
  49 #include <linux/types.h>
  50 #include <linux/backlight.h>
  51 #include <linux/platform_device.h>
  52 #include <linux/err.h>
  53 #include <linux/dmi.h>
  54 #include <linux/pci.h>
  55 #include <linux/interrupt.h>
  56 #include <linux/delay.h>
  57 #include <linux/input.h>
  58 #include <linux/kfifo.h>
  59 #include <linux/workqueue.h>
  60 #include <linux/acpi.h>
  61 #include <acpi/acpi_drivers.h>
  62 #include <acpi/acpi_bus.h>
  63 #include <asm/uaccess.h>
  64 #include <linux/sonypi.h>
  65 #ifdef CONFIG_SONY_LAPTOP_OLD
  66 #include <linux/poll.h>
  67 #include <linux/miscdevice.h>
  68 #endif
  69
  70 #define DRV_PFX                 "sony-laptop: "
  71 #define dprintk(msg...)         do {                    \
  72         if (debug) printk(KERN_WARNING DRV_PFX  msg);   \
  73 } while (0)
  74
  75 #define SONY_LAPTOP_DRIVER_VERSION      "0.5"
  76
  77 #define SONY_NC_CLASS           "sony-nc"
  78 #define SONY_NC_HID             "SNY5001"
  79 #define SONY_NC_DRIVER_NAME     "Sony Notebook Control Driver"
  80
  81 #define SONY_PIC_CLASS          "sony-pic"
  82 #define SONY_PIC_HID            "SNY6001"
  83 #define SONY_PIC_DRIVER_NAME    "Sony Programmable IO Control Driver"
  84
  85 MODULE_AUTHOR("Stelian Pop, Mattia Dongili");
  86 MODULE_DESCRIPTION("Sony laptop extras driver (SPIC and SNC ACPI device)");
  87 MODULE_LICENSE("GPL");
  88 MODULE_VERSION(SONY_LAPTOP_DRIVER_VERSION);
  89
  90 static int debug;
  91 module_param(debug, int, 0);
  92 MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
  93                  "the development of this driver");
  94
  95 static int no_spic;             /* = 0 */
  96 module_param(no_spic, int, 0444);
  97 MODULE_PARM_DESC(no_spic,
  98                  "set this if you don't want to enable the SPIC device");
  99
 100 static int compat;              /* = 0 */
 101 module_param(compat, int, 0444);
 102 MODULE_PARM_DESC(compat,
 103                  "set this if you want to enable backward compatibility mode");
 104
 105 static unsigned long mask = 0xffffffff;
 106 module_param(mask, ulong, 0644);
 107 MODULE_PARM_DESC(mask,
 108                  "set this to the mask of event you want to enable (see doc)");
 109
 110 static int camera;              /* = 0 */
 111 module_param(camera, int, 0444);
 112 MODULE_PARM_DESC(camera,
 113                  "set this to 1 to enable Motion Eye camera controls "
 114                  "(only use it if you have a C1VE or C1VN model)");
 115
 116 #ifdef CONFIG_SONY_LAPTOP_OLD
 117 static int minor = -1;
 118 module_param(minor, int, 0);
 119 MODULE_PARM_DESC(minor,
 120                  "minor number of the misc device for the SPIC compatibility code, "
 121                  "default is -1 (automatic)");
 122 #endif
 123
 124 /*********** Input Devices ***********/
 125
 126 #define SONY_LAPTOP_BUF_SIZE    128
 127 struct sony_laptop_input_s {
 128         atomic_t                users;
 129         struct input_dev        *jog_dev;
 130         struct input_dev        *key_dev;
 131         struct kfifo            *fifo;
 132         spinlock_t              fifo_lock;
 133         struct workqueue_struct *wq;
 134 };
 135 static struct sony_laptop_input_s sony_laptop_input = {
 136         .users = ATOMIC_INIT(0),
 137 };
 138
 139 struct sony_laptop_keypress {
 140         struct input_dev *dev;
 141         int key;
 142 };
 143
 144 /* Correspondance table between sonypi events and input layer events */
 145 static struct {
 146         int sonypiev;
 147         int inputev;
 148 } sony_laptop_inputkeys[] = {
 149         { SONYPI_EVENT_CAPTURE_PRESSED,         KEY_CAMERA },
 150         { SONYPI_EVENT_FNKEY_ONLY,              KEY_FN },
 151         { SONYPI_EVENT_FNKEY_ESC,               KEY_FN_ESC },
 152         { SONYPI_EVENT_FNKEY_F1,                KEY_FN_F1 },
 153         { SONYPI_EVENT_FNKEY_F2,                KEY_FN_F2 },
 154         { SONYPI_EVENT_FNKEY_F3,                KEY_FN_F3 },
 155         { SONYPI_EVENT_FNKEY_F4,                KEY_FN_F4 },
 156         { SONYPI_EVENT_FNKEY_F5,                KEY_FN_F5 },
 157         { SONYPI_EVENT_FNKEY_F6,                KEY_FN_F6 },
 158         { SONYPI_EVENT_FNKEY_F7,                KEY_FN_F7 },
 159         { SONYPI_EVENT_FNKEY_F8,                KEY_FN_F8 },
 160         { SONYPI_EVENT_FNKEY_F9,                KEY_FN_F9 },
 161         { SONYPI_EVENT_FNKEY_F10,               KEY_FN_F10 },
 162         { SONYPI_EVENT_FNKEY_F11,               KEY_FN_F11 },
 163         { SONYPI_EVENT_FNKEY_F12,               KEY_FN_F12 },
 164         { SONYPI_EVENT_FNKEY_1,                 KEY_FN_1 },
 165         { SONYPI_EVENT_FNKEY_2,                 KEY_FN_2 },
 166         { SONYPI_EVENT_FNKEY_D,                 KEY_FN_D },
 167         { SONYPI_EVENT_FNKEY_E,                 KEY_FN_E },
 168         { SONYPI_EVENT_FNKEY_F,                 KEY_FN_F },
 169         { SONYPI_EVENT_FNKEY_S,                 KEY_FN_S },
 170         { SONYPI_EVENT_FNKEY_B,                 KEY_FN_B },
 171         { SONYPI_EVENT_BLUETOOTH_PRESSED,       KEY_BLUE },
 172         { SONYPI_EVENT_BLUETOOTH_ON,            KEY_BLUE },
 173         { SONYPI_EVENT_PKEY_P1,                 KEY_PROG1 },
 174         { SONYPI_EVENT_PKEY_P2,                 KEY_PROG2 },
 175         { SONYPI_EVENT_PKEY_P3,                 KEY_PROG3 },
 176         { SONYPI_EVENT_BACK_PRESSED,            KEY_BACK },
 177         { SONYPI_EVENT_HELP_PRESSED,            KEY_HELP },
 178         { SONYPI_EVENT_ZOOM_PRESSED,            KEY_ZOOM },
 179         { SONYPI_EVENT_THUMBPHRASE_PRESSED,     BTN_THUMB },
 180         { 0, 0 },
 181 };
 182
 183 /* release buttons after a short delay if pressed */
 184 static void do_sony_laptop_release_key(struct work_struct *work)
 185 {
 186         struct sony_laptop_keypress kp;
 187
 188         while (kfifo_get(sony_laptop_input.fifo, (unsigned char *)&kp,
 189                          sizeof(kp)) == sizeof(kp)) {
 190                 msleep(10);
 191                 input_report_key(kp.dev, kp.key, 0);
 192                 input_sync(kp.dev);
 193         }
 194 }
 195 static DECLARE_WORK(sony_laptop_release_key_work,
 196                 do_sony_laptop_release_key);
 197
 198 /* forward event to the input subsytem */
 199 static void sony_laptop_report_input_event(u8 event)
 200 {
 201         struct input_dev *jog_dev = sony_laptop_input.jog_dev;
 202         struct input_dev *key_dev = sony_laptop_input.key_dev;
 203         struct sony_laptop_keypress kp = { NULL };
 204         int i;
 205
 206         if (event == SONYPI_EVENT_FNKEY_RELEASED) {
 207                 /* Nothing, not all VAIOs generate this event */
 208                 return;
 209         }
 210
 211         /* report events */
 212         switch (event) {
 213         /* jog_dev events */
 214         case SONYPI_EVENT_JOGDIAL_UP:
 215         case SONYPI_EVENT_JOGDIAL_UP_PRESSED:
 216                 input_report_rel(jog_dev, REL_WHEEL, 1);
 217                 input_sync(jog_dev);
 218                 return;
 219
 220         case SONYPI_EVENT_JOGDIAL_DOWN:
 221         case SONYPI_EVENT_JOGDIAL_DOWN_PRESSED:
 222                 input_report_rel(jog_dev, REL_WHEEL, -1);
 223                 input_sync(jog_dev);
 224                 return;
 225
 226         /* key_dev events */
 227         case SONYPI_EVENT_JOGDIAL_PRESSED:
 228                 kp.key = BTN_MIDDLE;
 229                 kp.dev = jog_dev;
 230                 break;
 231
 232         default:
 233                 for (i = 0; sony_laptop_inputkeys[i].sonypiev; i++)
 234                         if (event == sony_laptop_inputkeys[i].sonypiev) {
 235                                 kp.dev = key_dev;
 236                                 kp.key = sony_laptop_inputkeys[i].inputev;
 237                                 break;
 238                         }
 239                 break;
 240         }
 241
 242         if (kp.dev) {
 243                 input_report_key(kp.dev, kp.key, 1);
 244                 input_sync(kp.dev);
 245                 kfifo_put(sony_laptop_input.fifo,
 246                           (unsigned char *)&kp, sizeof(kp));
 247
 248                 if (!work_pending(&sony_laptop_release_key_work))
 249                         queue_work(sony_laptop_input.wq,
 250                                         &sony_laptop_release_key_work);
 251         } else
 252                 dprintk("unknown input event %.2x\n", event);
 253 }
 254
 255 static int sony_laptop_setup_input(void)
 256 {
 257         struct input_dev *jog_dev;
 258         struct input_dev *key_dev;
 259         int i;
 260         int error;
 261
 262         /* don't run again if already initialized */
 263         if (atomic_add_return(1, &sony_laptop_input.users) > 1)
 264                 return 0;
 265
 266         /* kfifo */
 267         spin_lock_init(&sony_laptop_input.fifo_lock);
 268         sony_laptop_input.fifo =
 269                 kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
 270                             &sony_laptop_input.fifo_lock);
 271         if (IS_ERR(sony_laptop_input.fifo)) {
 272                 printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
 273                 error = PTR_ERR(sony_laptop_input.fifo);
 274                 goto err_dec_users;
 275         }
 276
 277         /* init workqueue */
 278         sony_laptop_input.wq = create_singlethread_workqueue("sony-laptop");
 279         if (!sony_laptop_input.wq) {
 280                 printk(KERN_ERR DRV_PFX
 281                                 "Unabe to create workqueue.\n");
 282                 error = -ENXIO;
 283                 goto err_free_kfifo;
 284         }
 285
 286         /* input keys */
 287         key_dev = input_allocate_device();
 288         if (!key_dev) {
 289                 error = -ENOMEM;
 290                 goto err_destroy_wq;
 291         }
 292
 293         key_dev->name = "Sony Vaio Keys";
 294         key_dev->id.bustype = BUS_ISA;
 295         key_dev->id.vendor = PCI_VENDOR_ID_SONY;
 296
 297         /* Initialize the Input Drivers: special keys */
 298         key_dev->evbit[0] = BIT(EV_KEY);
 299         for (i = 0; sony_laptop_inputkeys[i].sonypiev; i++)
 300                 if (sony_laptop_inputkeys[i].inputev)
 301                         set_bit(sony_laptop_inputkeys[i].inputev,
 302                                         key_dev->keybit);
 303
 304         error = input_register_device(key_dev);
 305         if (error)
 306                 goto err_free_keydev;
 307
 308         sony_laptop_input.key_dev = key_dev;
 309
 310         /* jogdial */
 311         jog_dev = input_allocate_device();
 312         if (!jog_dev) {
 313                 error = -ENOMEM;
 314                 goto err_unregister_keydev;
 315         }
 316
 317         jog_dev->name = "Sony Vaio Jogdial";
 318         jog_dev->id.bustype = BUS_ISA;
 319         jog_dev->id.vendor = PCI_VENDOR_ID_SONY;
 320
 321         jog_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
 322         jog_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_MIDDLE);
 323         jog_dev->relbit[0] = BIT(REL_WHEEL);
 324
 325         error = input_register_device(jog_dev);
 326         if (error)
 327                 goto err_free_jogdev;
 328
 329         sony_laptop_input.jog_dev = jog_dev;
 330
 331         return 0;
 332
 333 err_free_jogdev:
 334         input_free_device(jog_dev);
 335
 336 err_unregister_keydev:
 337         input_unregister_device(key_dev);
 338         /* to avoid kref underflow below at input_free_device */
 339         key_dev = NULL;
 340
 341 err_free_keydev:
 342         input_free_device(key_dev);
 343
 344 err_destroy_wq:
 345         destroy_workqueue(sony_laptop_input.wq);
 346
 347 err_free_kfifo:
 348         kfifo_free(sony_laptop_input.fifo);
 349
 350 err_dec_users:
 351         atomic_dec(&sony_laptop_input.users);
 352         return error;
 353 }
 354
 355 static void sony_laptop_remove_input(void)
 356 {
 357         /* cleanup only after the last user has gone */
 358         if (!atomic_dec_and_test(&sony_laptop_input.users))
 359                 return;
 360
 361         /* flush workqueue first */
 362         flush_workqueue(sony_laptop_input.wq);
 363
 364         /* destroy input devs */
 365         input_unregister_device(sony_laptop_input.key_dev);
 366         sony_laptop_input.key_dev = NULL;
 367
 368         if (sony_laptop_input.jog_dev) {
 369                 input_unregister_device(sony_laptop_input.jog_dev);
 370                 sony_laptop_input.jog_dev = NULL;
 371         }
 372
 373         destroy_workqueue(sony_laptop_input.wq);
 374         kfifo_free(sony_laptop_input.fifo);
 375 }
 376
 377 /*********** Platform Device ***********/
 378
 379 static atomic_t sony_pf_users = ATOMIC_INIT(0);
 380 static struct platform_driver sony_pf_driver = {
 381         .driver = {
 382                    .name = "sony-laptop",
 383                    .owner = THIS_MODULE,
 384                    }
 385 };
 386 static struct platform_device *sony_pf_device;
 387
 388 static int sony_pf_add(void)
 389 {
 390         int ret = 0;
 391
 392         /* don't run again if already initialized */
 393         if (atomic_add_return(1, &sony_pf_users) > 1)
 394                 return 0;
 395
 396         ret = platform_driver_register(&sony_pf_driver);
 397         if (ret)
 398                 goto out;
 399
 400         sony_pf_device = platform_device_alloc("sony-laptop", -1);
 401         if (!sony_pf_device) {
 402                 ret = -ENOMEM;
 403                 goto out_platform_registered;
 404         }
 405
 406         ret = platform_device_add(sony_pf_device);
 407         if (ret)
 408                 goto out_platform_alloced;
 409
 410         return 0;
 411
 412       out_platform_alloced:
 413         platform_device_put(sony_pf_device);
 414         sony_pf_device = NULL;
 415       out_platform_registered:
 416         platform_driver_unregister(&sony_pf_driver);
 417       out:
 418         atomic_dec(&sony_pf_users);
 419         return ret;
 420 }
 421
 422 static void sony_pf_remove(void)
 423 {
 424         /* deregister only after the last user has gone */
 425         if (!atomic_dec_and_test(&sony_pf_users))
 426                 return;
 427
 428         platform_device_del(sony_pf_device);
 429         platform_device_put(sony_pf_device);
 430         platform_driver_unregister(&sony_pf_driver);
 431 }
 432
 433 /*********** SNC (SNY5001) Device ***********/
 434
 435 /* the device uses 1-based values, while the backlight subsystem uses
 436    0-based values */
 437 #define SONY_MAX_BRIGHTNESS     8
 438
 439 #define SNC_VALIDATE_IN         0
 440 #define SNC_VALIDATE_OUT        1
 441
 442 static ssize_t sony_nc_sysfs_show(struct device *, struct device_attribute *,
 443                               char *);
 444 static ssize_t sony_nc_sysfs_store(struct device *, struct device_attribute *,
 445                                const char *, size_t);
 446 static int boolean_validate(const int, const int);
 447 static int brightness_default_validate(const int, const int);
 448
 449 struct sony_nc_value {
 450         char *name;             /* name of the entry */
 451         char **acpiget;         /* names of the ACPI get function */
 452         char **acpiset;         /* names of the ACPI set function */
 453         int (*validate)(const int, const int);  /* input/output validation */
 454         int value;              /* current setting */
 455         int valid;              /* Has ever been set */
 456         int debug;              /* active only in debug mode ? */
 457         struct device_attribute devattr;        /* sysfs atribute */
 458 };
 459
 460 #define SNC_HANDLE_NAMES(_name, _values...) \
 461         static char *snc_##_name[] = { _values, NULL }
 462
 463 #define SNC_HANDLE(_name, _getters, _setters, _validate, _debug) \
 464         { \
 465                 .name           = __stringify(_name), \
 466                 .acpiget        = _getters, \
 467                 .acpiset        = _setters, \
 468                 .validate       = _validate, \
 469                 .debug          = _debug, \
 470                 .devattr        = __ATTR(_name, 0, sony_nc_sysfs_show, sony_nc_sysfs_store), \
 471         }
 472
 473 #define SNC_HANDLE_NULL { .name = NULL }
 474
 475 SNC_HANDLE_NAMES(fnkey_get, "GHKE");
 476
 477 SNC_HANDLE_NAMES(brightness_def_get, "GPBR");
 478 SNC_HANDLE_NAMES(brightness_def_set, "SPBR");
 479
 480 SNC_HANDLE_NAMES(cdpower_get, "GCDP");
 481 SNC_HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");
 482
 483 SNC_HANDLE_NAMES(audiopower_get, "GAZP");
 484 SNC_HANDLE_NAMES(audiopower_set, "AZPW");
 485
 486 SNC_HANDLE_NAMES(lanpower_get, "GLNP");
 487 SNC_HANDLE_NAMES(lanpower_set, "LNPW");
 488
 489 SNC_HANDLE_NAMES(PID_get, "GPID");
 490
 491 SNC_HANDLE_NAMES(CTR_get, "GCTR");
 492 SNC_HANDLE_NAMES(CTR_set, "SCTR");
 493
 494 SNC_HANDLE_NAMES(PCR_get, "GPCR");
 495 SNC_HANDLE_NAMES(PCR_set, "SPCR");
 496
 497 SNC_HANDLE_NAMES(CMI_get, "GCMI");
 498 SNC_HANDLE_NAMES(CMI_set, "SCMI");
 499
 500 static struct sony_nc_value sony_nc_values[] = {
 501         SNC_HANDLE(brightness_default, snc_brightness_def_get,
 502                         snc_brightness_def_set, brightness_default_validate, 0),
 503         SNC_HANDLE(fnkey, snc_fnkey_get, NULL, NULL, 0),
 504         SNC_HANDLE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0),
 505         SNC_HANDLE(audiopower, snc_audiopower_get, snc_audiopower_set,
 506                         boolean_validate, 0),
 507         SNC_HANDLE(lanpower, snc_lanpower_get, snc_lanpower_set,
 508                         boolean_validate, 1),
 509         /* unknown methods */
 510         SNC_HANDLE(PID, snc_PID_get, NULL, NULL, 1),
 511         SNC_HANDLE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1),
 512         SNC_HANDLE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1),
 513         SNC_HANDLE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1),
 514         SNC_HANDLE_NULL
 515 };
 516
 517 static acpi_handle sony_nc_acpi_handle;
 518 static struct acpi_device *sony_nc_acpi_device = NULL;
 519
 520 /*
 521  * acpi_evaluate_object wrappers
 522  */
 523 static int acpi_callgetfunc(acpi_handle handle, char *name, int *result)
 524 {
 525         struct acpi_buffer output;
 526         union acpi_object out_obj;
 527         acpi_status status;
 528
 529         output.length = sizeof(out_obj);
 530         output.pointer = &out_obj;
 531
 532         status = acpi_evaluate_object(handle, name, NULL, &output);
 533         if ((status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER)) {
 534                 *result = out_obj.integer.value;
 535                 return 0;
 536         }
 537
 538         printk(KERN_WARNING DRV_PFX "acpi_callreadfunc failed\n");
 539
 540         return -1;
 541 }
 542
 543 static int acpi_callsetfunc(acpi_handle handle, char *name, int value,
 544                             int *result)
 545 {
 546         struct acpi_object_list params;
 547         union acpi_object in_obj;
 548         struct acpi_buffer output;
 549         union acpi_object out_obj;
 550         acpi_status status;
 551
 552         params.count = 1;
 553         params.pointer = &in_obj;
 554         in_obj.type = ACPI_TYPE_INTEGER;
 555         in_obj.integer.value = value;
 556
 557         output.length = sizeof(out_obj);
 558         output.pointer = &out_obj;
 559
 560         status = acpi_evaluate_object(handle, name, &params, &output);
 561         if (status == AE_OK) {
 562                 if (result != NULL) {
 563                         if (out_obj.type != ACPI_TYPE_INTEGER) {
 564                                 printk(KERN_WARNING DRV_PFX "acpi_evaluate_object bad "
 565                                        "return type\n");
 566                                 return -1;
 567                         }
 568                         *result = out_obj.integer.value;
 569                 }
 570                 return 0;
 571         }
 572
 573         printk(KERN_WARNING DRV_PFX "acpi_evaluate_object failed\n");
 574
 575         return -1;
 576 }
 577
 578 /*
 579  * sony_nc_values input/output validate functions
 580  */
 581
 582 /* brightness_default_validate:
 583  *
 584  * manipulate input output values to keep consistency with the
 585  * backlight framework for which brightness values are 0-based.
 586  */
 587 static int brightness_default_validate(const int direction, const int value)
 588 {
 589         switch (direction) {
 590                 case SNC_VALIDATE_OUT:
 591                         return value - 1;
 592                 case SNC_VALIDATE_IN:
 593                         if (value >= 0 && value < SONY_MAX_BRIGHTNESS)
 594                                 return value + 1;
 595         }
 596         return -EINVAL;
 597 }
 598
 599 /* boolean_validate:
 600  *
 601  * on input validate boolean values 0/1, on output just pass the
 602  * received value.
 603  */
 604 static int boolean_validate(const int direction, const int value)
 605 {
 606         if (direction == SNC_VALIDATE_IN) {
 607                 if (value != 0 && value != 1)
 608                         return -EINVAL;
 609         }
 610         return value;
 611 }
 612
 613 /*
 614  * Sysfs show/store common to all sony_nc_values
 615  */
 616 static ssize_t sony_nc_sysfs_show(struct device *dev, struct device_attribute *attr,
 617                               char *buffer)
 618 {
 619         int value;
 620         struct sony_nc_value *item =
 621             container_of(attr, struct sony_nc_value, devattr);
 622
 623         if (!*item->acpiget)
 624                 return -EIO;
 625
 626         if (acpi_callgetfunc(sony_nc_acpi_handle, *item->acpiget, &value) < 0)
 627                 return -EIO;
 628
 629         if (item->validate)
 630                 value = item->validate(SNC_VALIDATE_OUT, value);
 631
 632         return snprintf(buffer, PAGE_SIZE, "%d\n", value);
 633 }
 634
 635 static ssize_t sony_nc_sysfs_store(struct device *dev,
 636                                struct device_attribute *attr,
 637                                const char *buffer, size_t count)
 638 {
 639         int value;
 640         struct sony_nc_value *item =
 641             container_of(attr, struct sony_nc_value, devattr);
 642
 643         if (!item->acpiset)
 644                 return -EIO;
 645
 646         if (count > 31)
 647                 return -EINVAL;
 648
 649         value = simple_strtoul(buffer, NULL, 10);
 650
 651         if (item->validate)
 652                 value = item->validate(SNC_VALIDATE_IN, value);
 653
 654         if (value < 0)
 655                 return value;
 656
 657         if (acpi_callsetfunc(sony_nc_acpi_handle, *item->acpiset, value, NULL) < 0)
 658                 return -EIO;
 659         item->value = value;
 660         item->valid = 1;
 661         return count;
 662 }
 663
 664
 665 /*
 666  * Backlight device
 667  */
 668 static int sony_backlight_update_status(struct backlight_device *bd)
 669 {
 670         return acpi_callsetfunc(sony_nc_acpi_handle, "SBRT",
 671                                 bd->props.brightness + 1, NULL);
 672 }
 673
 674 static int sony_backlight_get_brightness(struct backlight_device *bd)
 675 {
 676         int value;
 677
 678         if (acpi_callgetfunc(sony_nc_acpi_handle, "GBRT", &value))
 679                 return 0;
 680         /* brightness levels are 1-based, while backlight ones are 0-based */
 681         return value - 1;
 682 }
 683
 684 static struct backlight_device *sony_backlight_device;
 685 static struct backlight_ops sony_backlight_ops = {
 686         .update_status = sony_backlight_update_status,
 687         .get_brightness = sony_backlight_get_brightness,
 688 };
 689
 690 /*
 691  * ACPI callbacks
 692  */
 693 static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
 694 {
 695         dprintk("sony_acpi_notify, event: %d\n", event);
 696         sony_laptop_report_input_event(event);
 697         acpi_bus_generate_event(sony_nc_acpi_device, 1, event);
 698 }
 699
 700 static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
 701                                       void *context, void **return_value)
 702 {
 703         struct acpi_namespace_node *node;
 704         union acpi_operand_object *operand;
 705
 706         node = (struct acpi_namespace_node *)handle;
 707         operand = (union acpi_operand_object *)node->object;
 708
 709         printk(KERN_WARNING DRV_PFX "method: name: %4.4s, args %X\n", node->name.ascii,
 710                (u32) operand->method.param_count);
 711
 712         return AE_OK;
 713 }
 714
 715 /*
 716  * ACPI device
 717  */
 718 static int sony_nc_resume(struct acpi_device *device)
 719 {
 720         struct sony_nc_value *item;
 721
 722         for (item = sony_nc_values; item->name; item++) {
 723                 int ret;
 724
 725                 if (!item->valid)
 726                         continue;
 727                 ret = acpi_callsetfunc(sony_nc_acpi_handle, *item->acpiset,
 728                                        item->value, NULL);
 729                 if (ret < 0) {
 730                         printk("%s: %d\n", __FUNCTION__, ret);
 731                         break;
 732                 }
 733         }
 734         return 0;
 735 }
 736
 737 static int sony_nc_add(struct acpi_device *device)
 738 {
 739         acpi_status status;
 740         int result = 0;
 741         acpi_handle handle;
 742         struct sony_nc_value *item;
 743
 744         printk(KERN_INFO DRV_PFX "%s v%s.\n",
 745                 SONY_NC_DRIVER_NAME, SONY_LAPTOP_DRIVER_VERSION);
 746
 747         sony_nc_acpi_device = device;
 748         strcpy(acpi_device_class(device), "sony/hotkey");
 749
 750         sony_nc_acpi_handle = device->handle;
 751
 752         if (debug) {
 753                 status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_nc_acpi_handle,
 754                                              1, sony_walk_callback, NULL, NULL);
 755                 if (ACPI_FAILURE(status)) {
 756                         printk(KERN_WARNING DRV_PFX "unable to walk acpi resources\n");
 757                         result = -ENODEV;
 758                         goto outwalk;
 759                 }
 760         }
 761
 762         /* setup input devices and helper fifo */
 763         result = sony_laptop_setup_input();
 764         if (result) {
 765                 printk(KERN_ERR DRV_PFX
 766                                 "Unabe to create input devices.\n");
 767                 goto outwalk;
 768         }
 769
 770         status = acpi_install_notify_handler(sony_nc_acpi_handle,
 771                                              ACPI_DEVICE_NOTIFY,
 772                                              sony_acpi_notify, NULL);
 773         if (ACPI_FAILURE(status)) {
 774                 printk(KERN_WARNING DRV_PFX "unable to install notify handler\n");
 775                 result = -ENODEV;
 776                 goto outinput;
 777         }
 778
 779         if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT", &handle))) {
 780                 sony_backlight_device = backlight_device_register("sony", NULL,
 781                                                                   NULL,
 782                                                                   &sony_backlight_ops);
 783
 784                 if (IS_ERR(sony_backlight_device)) {
 785                         printk(KERN_WARNING DRV_PFX "unable to register backlight device\n");
 786                         sony_backlight_device = NULL;
 787                 } else {
 788                         sony_backlight_device->props.brightness =
 789                             sony_backlight_get_brightness
 790                             (sony_backlight_device);
 791                         sony_backlight_device->props.max_brightness =
 792                             SONY_MAX_BRIGHTNESS - 1;
 793                 }
 794
 795         }
 796
 797         result = sony_pf_add();
 798         if (result)
 799                 goto outbacklight;
 800
 801         /* create sony_pf sysfs attributes related to the SNC device */
 802         for (item = sony_nc_values; item->name; ++item) {
 803
 804                 if (!debug && item->debug)
 805                         continue;
 806
 807                 /* find the available acpiget as described in the DSDT */
 808                 for (; item->acpiget && *item->acpiget; ++item->acpiget) {
 809                         if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle,
 810                                                          *item->acpiget,
 811                                                          &handle))) {
 812                                 dprintk("Found %s getter: %s\n",
 813                                                 item->name, *item->acpiget);
 814                                 item->devattr.attr.mode |= S_IRUGO;
 815                                 break;
 816                         }
 817                 }
 818
 819                 /* find the available acpiset as described in the DSDT */
 820                 for (; item->acpiset && *item->acpiset; ++item->acpiset) {
 821                         if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle,
 822                                                          *item->acpiset,
 823                                                          &handle))) {
 824                                 dprintk("Found %s setter: %s\n",
 825                                                 item->name, *item->acpiset);
 826                                 item->devattr.attr.mode |= S_IWUSR;
 827                                 break;
 828                         }
 829                 }
 830
 831                 if (item->devattr.attr.mode != 0) {
 832                         result =
 833                             device_create_file(&sony_pf_device->dev,
 834                                                &item->devattr);
 835                         if (result)
 836                                 goto out_sysfs;
 837                 }
 838         }
 839
 840         return 0;
 841
 842       out_sysfs:
 843         for (item = sony_nc_values; item->name; ++item) {
 844                 device_remove_file(&sony_pf_device->dev, &item->devattr);
 845         }
 846         sony_pf_remove();
 847
 848       outbacklight:
 849         if (sony_backlight_device)
 850                 backlight_device_unregister(sony_backlight_device);
 851
 852         status = acpi_remove_notify_handler(sony_nc_acpi_handle,
 853                                             ACPI_DEVICE_NOTIFY,
 854                                             sony_acpi_notify);
 855         if (ACPI_FAILURE(status))
 856                 printk(KERN_WARNING DRV_PFX "unable to remove notify handler\n");
 857
 858       outinput:
 859         sony_laptop_remove_input();
 860
 861       outwalk:
 862         return result;
 863 }
 864
 865 static int sony_nc_remove(struct acpi_device *device, int type)
 866 {
 867         acpi_status status;
 868         struct sony_nc_value *item;
 869
 870         if (sony_backlight_device)
 871                 backlight_device_unregister(sony_backlight_device);
 872
 873         sony_nc_acpi_device = NULL;
 874
 875         status = acpi_remove_notify_handler(sony_nc_acpi_handle,
 876                                             ACPI_DEVICE_NOTIFY,
 877                                             sony_acpi_notify);
 878         if (ACPI_FAILURE(status))
 879                 printk(KERN_WARNING DRV_PFX "unable to remove notify handler\n");
 880
 881         for (item = sony_nc_values; item->name; ++item) {
 882                 device_remove_file(&sony_pf_device->dev, &item->devattr);
 883         }
 884
 885         sony_pf_remove();
 886         sony_laptop_remove_input();
 887         dprintk(SONY_NC_DRIVER_NAME " removed.\n");
 888
 889         return 0;
 890 }
 891
 892 static struct acpi_driver sony_nc_driver = {
 893         .name = SONY_NC_DRIVER_NAME,
 894         .class = SONY_NC_CLASS,
 895         .ids = SONY_NC_HID,
 896         .owner = THIS_MODULE,
 897         .ops = {
 898                 .add = sony_nc_add,
 899                 .remove = sony_nc_remove,
 900                 .resume = sony_nc_resume,
 901                 },
 902 };
 903
 904 /*********** SPIC (SNY6001) Device ***********/
 905
 906 #define SONYPI_DEVICE_TYPE1     0x00000001
 907 #define SONYPI_DEVICE_TYPE2     0x00000002
 908 #define SONYPI_DEVICE_TYPE3     0x00000004
 909
 910 #define SONY_PIC_EV_MASK        0xff
 911
 912 struct sony_pic_ioport {
 913         struct acpi_resource_io io;
 914         struct list_head        list;
 915 };
 916
 917 struct sony_pic_irq {
 918         struct acpi_resource_irq        irq;
 919         struct list_head                list;
 920 };
 921
 922 struct sony_pic_dev {
 923         int                     model;
 924         u8                      camera_power;
 925         u8                      bluetooth_power;
 926         struct acpi_device      *acpi_dev;
 927         struct sony_pic_irq     *cur_irq;
 928         struct sony_pic_ioport  *cur_ioport;
 929         struct list_head        interrupts;
 930         struct list_head        ioports;
 931         struct mutex            lock;
 932 };
 933
 934 static struct sony_pic_dev spic_dev = {
 935         .interrupts     = LIST_HEAD_INIT(spic_dev.interrupts),
 936         .ioports        = LIST_HEAD_INIT(spic_dev.ioports),
 937 };
 938
 939 /* Event masks */
 940 #define SONYPI_JOGGER_MASK                      0x00000001
 941 #define SONYPI_CAPTURE_MASK                     0x00000002
 942 #define SONYPI_FNKEY_MASK                       0x00000004
 943 #define SONYPI_BLUETOOTH_MASK                   0x00000008
 944 #define SONYPI_PKEY_MASK                        0x00000010
 945 #define SONYPI_BACK_MASK                        0x00000020
 946 #define SONYPI_HELP_MASK                        0x00000040
 947 #define SONYPI_LID_MASK                         0x00000080
 948 #define SONYPI_ZOOM_MASK                        0x00000100
 949 #define SONYPI_THUMBPHRASE_MASK                 0x00000200
 950 #define SONYPI_MEYE_MASK                        0x00000400
 951 #define SONYPI_MEMORYSTICK_MASK                 0x00000800
 952 #define SONYPI_BATTERY_MASK                     0x00001000
 953 #define SONYPI_WIRELESS_MASK                    0x00002000
 954
 955 struct sonypi_event {
 956         u8      data;
 957         u8      event;
 958 };
 959
 960 /* The set of possible button release events */
 961 static struct sonypi_event sonypi_releaseev[] = {
 962         { 0x00, SONYPI_EVENT_ANYBUTTON_RELEASED },
 963         { 0, 0 }
 964 };
 965
 966 /* The set of possible jogger events  */
 967 static struct sonypi_event sonypi_joggerev[] = {
 968         { 0x1f, SONYPI_EVENT_JOGDIAL_UP },
 969         { 0x01, SONYPI_EVENT_JOGDIAL_DOWN },
 970         { 0x5f, SONYPI_EVENT_JOGDIAL_UP_PRESSED },
 971         { 0x41, SONYPI_EVENT_JOGDIAL_DOWN_PRESSED },
 972         { 0x1e, SONYPI_EVENT_JOGDIAL_FAST_UP },
 973         { 0x02, SONYPI_EVENT_JOGDIAL_FAST_DOWN },
 974         { 0x5e, SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED },
 975         { 0x42, SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED },
 976         { 0x1d, SONYPI_EVENT_JOGDIAL_VFAST_UP },
 977         { 0x03, SONYPI_EVENT_JOGDIAL_VFAST_DOWN },
 978         { 0x5d, SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED },
 979         { 0x43, SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED },
 980         { 0x40, SONYPI_EVENT_JOGDIAL_PRESSED },
 981         { 0, 0 }
 982 };
 983
 984 /* The set of possible capture button events */
 985 static struct sonypi_event sonypi_captureev[] = {
 986         { 0x05, SONYPI_EVENT_CAPTURE_PARTIALPRESSED },
 987         { 0x07, SONYPI_EVENT_CAPTURE_PRESSED },
 988         { 0x01, SONYPI_EVENT_CAPTURE_PARTIALRELEASED },
 989         { 0, 0 }
 990 };
 991
 992 /* The set of possible fnkeys events */
 993 static struct sonypi_event sonypi_fnkeyev[] = {
 994         { 0x10, SONYPI_EVENT_FNKEY_ESC },
 995         { 0x11, SONYPI_EVENT_FNKEY_F1 },
 996         { 0x12, SONYPI_EVENT_FNKEY_F2 },
 997         { 0x13, SONYPI_EVENT_FNKEY_F3 },
 998         { 0x14, SONYPI_EVENT_FNKEY_F4 },
 999         { 0x15, SONYPI_EVENT_FNKEY_F5 },
1000         { 0x16, SONYPI_EVENT_FNKEY_F6 },
1001         { 0x17, SONYPI_EVENT_FNKEY_F7 },
1002         { 0x18, SONYPI_EVENT_FNKEY_F8 },
1003         { 0x19, SONYPI_EVENT_FNKEY_F9 },
1004         { 0x1a, SONYPI_EVENT_FNKEY_F10 },
1005         { 0x1b, SONYPI_EVENT_FNKEY_F11 },
1006         { 0x1c, SONYPI_EVENT_FNKEY_F12 },
1007         { 0x1f, SONYPI_EVENT_FNKEY_RELEASED },
1008         { 0x21, SONYPI_EVENT_FNKEY_1 },
1009         { 0x22, SONYPI_EVENT_FNKEY_2 },
1010         { 0x31, SONYPI_EVENT_FNKEY_D },
1011         { 0x32, SONYPI_EVENT_FNKEY_E },
1012         { 0x33, SONYPI_EVENT_FNKEY_F },
1013         { 0x34, SONYPI_EVENT_FNKEY_S },
1014         { 0x35, SONYPI_EVENT_FNKEY_B },
1015         { 0x36, SONYPI_EVENT_FNKEY_ONLY },
1016         { 0, 0 }
1017 };
1018
1019 /* The set of possible program key events */
1020 static struct sonypi_event sonypi_pkeyev[] = {
1021         { 0x01, SONYPI_EVENT_PKEY_P1 },
1022         { 0x02, SONYPI_EVENT_PKEY_P2 },
1023         { 0x04, SONYPI_EVENT_PKEY_P3 },
1024         { 0x5c, SONYPI_EVENT_PKEY_P1 },
1025         { 0, 0 }
1026 };
1027
1028 /* The set of possible bluetooth events */
1029 static struct sonypi_event sonypi_blueev[] = {
1030         { 0x55, SONYPI_EVENT_BLUETOOTH_PRESSED },
1031         { 0x59, SONYPI_EVENT_BLUETOOTH_ON },
1032         { 0x5a, SONYPI_EVENT_BLUETOOTH_OFF },
1033         { 0, 0 }
1034 };
1035
1036 /* The set of possible wireless events */
1037 static struct sonypi_event sonypi_wlessev[] = {
1038         { 0x59, SONYPI_EVENT_WIRELESS_ON },
1039         { 0x5a, SONYPI_EVENT_WIRELESS_OFF },
1040         { 0, 0 }
1041 };
1042
1043 /* The set of possible back button events */
1044 static struct sonypi_event sonypi_backev[] = {
1045         { 0x20, SONYPI_EVENT_BACK_PRESSED },
1046         { 0, 0 }
1047 };
1048
1049 /* The set of possible help button events */
1050 static struct sonypi_event sonypi_helpev[] = {
1051         { 0x3b, SONYPI_EVENT_HELP_PRESSED },
1052         { 0, 0 }
1053 };
1054
1055
1056 /* The set of possible lid events */
1057 static struct sonypi_event sonypi_lidev[] = {
1058         { 0x51, SONYPI_EVENT_LID_CLOSED },
1059         { 0x50, SONYPI_EVENT_LID_OPENED },
1060         { 0, 0 }
1061 };
1062
1063 /* The set of possible zoom events */
1064 static struct sonypi_event sonypi_zoomev[] = {
1065         { 0x39, SONYPI_EVENT_ZOOM_PRESSED },
1066         { 0, 0 }
1067 };
1068
1069 /* The set of possible thumbphrase events */
1070 static struct sonypi_event sonypi_thumbphraseev[] = {
1071         { 0x3a, SONYPI_EVENT_THUMBPHRASE_PRESSED },
1072         { 0, 0 }
1073 };
1074
1075 /* The set of possible motioneye camera events */
1076 static struct sonypi_event sonypi_meyeev[] = {
1077         { 0x00, SONYPI_EVENT_MEYE_FACE },
1078         { 0x01, SONYPI_EVENT_MEYE_OPPOSITE },
1079         { 0, 0 }
1080 };
1081
1082 /* The set of possible memorystick events */
1083 static struct sonypi_event sonypi_memorystickev[] = {
1084         { 0x53, SONYPI_EVENT_MEMORYSTICK_INSERT },
1085         { 0x54, SONYPI_EVENT_MEMORYSTICK_EJECT },
1086         { 0, 0 }
1087 };
1088
1089 /* The set of possible battery events */
1090 static struct sonypi_event sonypi_batteryev[] = {
1091         { 0x20, SONYPI_EVENT_BATTERY_INSERT },
1092         { 0x30, SONYPI_EVENT_BATTERY_REMOVE },
1093         { 0, 0 }
1094 };
1095
1096 static struct sonypi_eventtypes {
1097         int                     model;
1098         u8                      data;
1099         unsigned long           mask;
1100         struct sonypi_event *   events;
1101 } sony_pic_eventtypes[] = {
1102         { SONYPI_DEVICE_TYPE1, 0, 0xffffffff, sonypi_releaseev },
1103         { SONYPI_DEVICE_TYPE1, 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
1104         { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_LID_MASK, sonypi_lidev },
1105         { SONYPI_DEVICE_TYPE1, 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
1106         { SONYPI_DEVICE_TYPE1, 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
1107         { SONYPI_DEVICE_TYPE1, 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
1108         { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
1109         { SONYPI_DEVICE_TYPE1, 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
1110         { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
1111         { SONYPI_DEVICE_TYPE1, 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },
1112
1113         { SONYPI_DEVICE_TYPE2, 0, 0xffffffff, sonypi_releaseev },
1114         { SONYPI_DEVICE_TYPE2, 0x38, SONYPI_LID_MASK, sonypi_lidev },
1115         { SONYPI_DEVICE_TYPE2, 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
1116         { SONYPI_DEVICE_TYPE2, 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
1117         { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
1118         { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
1119         { SONYPI_DEVICE_TYPE2, 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
1120         { SONYPI_DEVICE_TYPE2, 0x11, SONYPI_BACK_MASK, sonypi_backev },
1121         { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_HELP_MASK, sonypi_helpev },
1122         { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
1123         { SONYPI_DEVICE_TYPE2, 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
1124         { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
1125         { SONYPI_DEVICE_TYPE2, 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
1126         { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
1127
1128         { SONYPI_DEVICE_TYPE3, 0, 0xffffffff, sonypi_releaseev },
1129         { SONYPI_DEVICE_TYPE3, 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
1130         { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
1131         { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
1132         { SONYPI_DEVICE_TYPE3, 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
1133         { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
1134         { 0 }
1135 };
1136
1137 static int sony_pic_detect_device_type(void)
1138 {
1139         struct pci_dev *pcidev;
1140         int model = 0;
1141
1142         if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
1143                                      PCI_DEVICE_ID_INTEL_82371AB_3, NULL)))
1144                 model = SONYPI_DEVICE_TYPE1;
1145
1146         else if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
1147                                           PCI_DEVICE_ID_INTEL_ICH6_1, NULL)))
1148                 model = SONYPI_DEVICE_TYPE3;
1149
1150         else if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
1151                                           PCI_DEVICE_ID_INTEL_ICH7_1, NULL)))
1152                 model = SONYPI_DEVICE_TYPE3;
1153
1154         else
1155                 model = SONYPI_DEVICE_TYPE2;
1156
1157         if (pcidev)
1158                 pci_dev_put(pcidev);
1159
1160         printk(KERN_INFO DRV_PFX "detected Type%d model\n",
1161                         model == SONYPI_DEVICE_TYPE1 ? 1 :
1162                         model == SONYPI_DEVICE_TYPE2 ? 2 : 3);
1163         return model;
1164 }
1165
1166 #define ITERATIONS_LONG         10000
1167 #define ITERATIONS_SHORT        10
1168 #define wait_on_command(command, iterations) {                          \
1169         unsigned int n = iterations;                                    \
1170         while (--n && (command))                                        \
1171                 udelay(1);                                              \
1172         if (!n)                                                         \
1173                 dprintk("command failed at %s : %s (line %d)\n",        \
1174                                 __FILE__, __FUNCTION__, __LINE__);      \
1175 }
1176
1177 static u8 sony_pic_call1(u8 dev)
1178 {
1179         u8 v1, v2;
1180
1181         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2,
1182                         ITERATIONS_LONG);
1183         outb(dev, spic_dev.cur_ioport->io.minimum + 4);
1184         v1 = inb_p(spic_dev.cur_ioport->io.minimum + 4);
1185         v2 = inb_p(spic_dev.cur_ioport->io.minimum);
1186         dprintk("sony_pic_call1: 0x%.4x\n", (v2 << 8) | v1);
1187         return v2;
1188 }
1189
1190 static u8 sony_pic_call2(u8 dev, u8 fn)
1191 {
1192         u8 v1;
1193
1194         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2,
1195                         ITERATIONS_LONG);
1196         outb(dev, spic_dev.cur_ioport->io.minimum + 4);
1197         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2,
1198                         ITERATIONS_LONG);
1199         outb(fn, spic_dev.cur_ioport->io.minimum);
1200         v1 = inb_p(spic_dev.cur_ioport->io.minimum);
1201         dprintk("sony_pic_call2: 0x%.4x\n", v1);
1202         return v1;
1203 }
1204
1205 static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
1206 {
1207         u8 v1;
1208
1209         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
1210         outb(dev, spic_dev.cur_ioport->io.minimum + 4);
1211         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
1212         outb(fn, spic_dev.cur_ioport->io.minimum);
1213         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
1214         outb(v, spic_dev.cur_ioport->io.minimum);
1215         v1 = inb_p(spic_dev.cur_ioport->io.minimum);
1216         dprintk("sony_pic_call3: 0x%.4x\n", v1);
1217         return v1;
1218 }
1219
1220 /* camera tests and poweron/poweroff */
1221 #define SONYPI_CAMERA_PICTURE           5
1222 #define SONYPI_CAMERA_MUTE_MASK         0x40
1223 #define SONYPI_CAMERA_CONTROL           0x10
1224 #define SONYPI_CAMERA_STATUS            7
1225 #define SONYPI_CAMERA_STATUS_READY      0x2
1226 #define SONYPI_CAMERA_STATUS_POSITION   0x4
1227
1228 static int __sony_pic_camera_ready(void)
1229 {
1230         u8 v;
1231
1232         v = sony_pic_call2(0x8f, SONYPI_CAMERA_STATUS);
1233         return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
1234 }
1235
1236 static int sony_pic_camera_off(void)
1237 {
1238         if (!camera) {
1239                 printk(KERN_WARNING DRV_PFX "camera control not enabled\n");
1240                 return -ENODEV;
1241         }
1242
1243         mutex_lock(&spic_dev.lock);
1244         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
1245                                 SONYPI_CAMERA_MUTE_MASK),
1246                         ITERATIONS_SHORT);
1247
1248         if (spic_dev.camera_power) {
1249                 sony_pic_call2(0x91, 0);
1250                 spic_dev.camera_power = 0;
1251         }
1252         mutex_unlock(&spic_dev.lock);
1253         return 0;
1254 }
1255
1256 static int sony_pic_camera_on(void)
1257 {
1258         int i, j, x;
1259         int result = 0;
1260
1261         if (!camera) {
1262                 printk(KERN_WARNING DRV_PFX "camera control not enabled\n");
1263                 return -ENODEV;
1264         }
1265
1266         mutex_lock(&spic_dev.lock);
1267         if (spic_dev.camera_power)
1268                 goto out_unlock;
1269
1270         for (j = 5; j > 0; j--) {
1271
1272                 for (x = 0; x < 100 && sony_pic_call2(0x91, 0x1); x++)
1273                         msleep(10);
1274                 sony_pic_call1(0x93);
1275
1276                 for (i = 400; i > 0; i--) {
1277                         if (__sony_pic_camera_ready())
1278                                 break;
1279                         msleep(10);
1280                 }
1281                 if (i)
1282                         break;
1283         }
1284
1285         if (j == 0) {
1286                 printk(KERN_WARNING DRV_PFX "failed to power on camera\n");
1287                 result = -ENODEV;
1288                 goto out_unlock;
1289         }
1290
1291         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTROL,
1292                                 0x5a),
1293                         ITERATIONS_SHORT);
1294
1295         spic_dev.camera_power = 1;
1296
1297 out_unlock:
1298         mutex_unlock(&spic_dev.lock);
1299         return 0;
1300 }
1301
1302 static ssize_t sony_pic_camerapower_store(struct device *dev,
1303                 struct device_attribute *attr,
1304                 const char *buffer, size_t count)
1305 {
1306         unsigned long value;
1307         int result;
1308         if (count > 31)
1309                 return -EINVAL;
1310
1311         value = simple_strtoul(buffer, NULL, 10);
1312         if (value)
1313                 result = sony_pic_camera_on();
1314         else
1315                 result = sony_pic_camera_off();
1316
1317         if (result)
1318                 return result;
1319
1320         return count;
1321 }
1322
1323 static ssize_t sony_pic_camerapower_show(struct device *dev,
1324                 struct device_attribute *attr, char *buffer)
1325 {
1326         ssize_t count;
1327         mutex_lock(&spic_dev.lock);
1328         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.camera_power);
1329         mutex_unlock(&spic_dev.lock);
1330         return count;
1331 }
1332
1333 /* bluetooth subsystem power state */
1334 static void __sony_pic_set_bluetoothpower(u8 state)
1335 {
1336         state = !!state;
1337         if (spic_dev.bluetooth_power == state)
1338                 return;
1339         sony_pic_call2(0x96, state);
1340         sony_pic_call1(0x82);
1341         spic_dev.bluetooth_power = state;
1342 }
1343
1344 static ssize_t sony_pic_bluetoothpower_store(struct device *dev,
1345                 struct device_attribute *attr,
1346                 const char *buffer, size_t count)
1347 {
1348         unsigned long value;
1349         if (count > 31)
1350                 return -EINVAL;
1351
1352         value = simple_strtoul(buffer, NULL, 10);
1353         mutex_lock(&spic_dev.lock);
1354         __sony_pic_set_bluetoothpower(value);
1355         mutex_unlock(&spic_dev.lock);
1356
1357         return count;
1358 }
1359
1360 static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
1361                 struct device_attribute *attr, char *buffer)
1362 {
1363         ssize_t count = 0;
1364         mutex_lock(&spic_dev.lock);
1365         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.bluetooth_power);
1366         mutex_unlock(&spic_dev.lock);
1367         return count;
1368 }
1369
1370 /* fan speed */
1371 /* FAN0 information (reverse engineered from ACPI tables) */
1372 #define SONY_PIC_FAN0_STATUS    0x93
1373 static int sony_pic_set_fanspeed(unsigned long value)
1374 {
1375         return ec_write(SONY_PIC_FAN0_STATUS, value);
1376 }
1377
1378 static int sony_pic_get_fanspeed(u8 *value)
1379 {
1380         return ec_read(SONY_PIC_FAN0_STATUS, value);
1381 }
1382
1383 static ssize_t sony_pic_fanspeed_store(struct device *dev,
1384                 struct device_attribute *attr,
1385                 const char *buffer, size_t count)
1386 {
1387         unsigned long value;
1388         if (count > 31)
1389                 return -EINVAL;
1390
1391         value = simple_strtoul(buffer, NULL, 10);
1392         if (sony_pic_set_fanspeed(value))
1393                 return -EIO;
1394
1395         return count;
1396 }
1397
1398 static ssize_t sony_pic_fanspeed_show(struct device *dev,
1399                 struct device_attribute *attr, char *buffer)
1400 {
1401         u8 value = 0;
1402         if (sony_pic_get_fanspeed(&value))
1403                 return -EIO;
1404
1405         return snprintf(buffer, PAGE_SIZE, "%d\n", value);
1406 }
1407
1408 #define SPIC_ATTR(_name, _mode)                                 \
1409 struct device_attribute spic_attr_##_name = __ATTR(_name,       \
1410                 _mode, sony_pic_## _name ##_show,               \
1411                 sony_pic_## _name ##_store)
1412
1413 static SPIC_ATTR(camerapower, 0644);
1414 static SPIC_ATTR(bluetoothpower, 0644);
1415 static SPIC_ATTR(fanspeed, 0644);
1416
1417 static struct attribute *spic_attributes[] = {
1418         &spic_attr_camerapower.attr,
1419         &spic_attr_bluetoothpower.attr,
1420         &spic_attr_fanspeed.attr,
1421         NULL
1422 };
1423
1424 static struct attribute_group spic_attribute_group = {
1425         .attrs = spic_attributes
1426 };
1427
1428 /******** SONYPI compatibility **********/
1429 #ifdef CONFIG_SONY_LAPTOP_OLD
1430
1431 /* battery / brightness / temperature  addresses */
1432 #define SONYPI_BAT_FLAGS        0x81
1433 #define SONYPI_LCD_LIGHT        0x96
1434 #define SONYPI_BAT1_PCTRM       0xa0
1435 #define SONYPI_BAT1_LEFT        0xa2
1436 #define SONYPI_BAT1_MAXRT       0xa4
1437 #define SONYPI_BAT2_PCTRM       0xa8
1438 #define SONYPI_BAT2_LEFT        0xaa
1439 #define SONYPI_BAT2_MAXRT       0xac
1440 #define SONYPI_BAT1_MAXTK       0xb0
1441 #define SONYPI_BAT1_FULL        0xb2
1442 #define SONYPI_BAT2_MAXTK       0xb8
1443 #define SONYPI_BAT2_FULL        0xba
1444 #define SONYPI_TEMP_STATUS      0xC1
1445
1446 struct sonypi_compat_s {
1447         struct fasync_struct    *fifo_async;
1448         struct kfifo            *fifo;
1449         spinlock_t              fifo_lock;
1450         wait_queue_head_t       fifo_proc_list;
1451         atomic_t                open_count;
1452 };
1453 static struct sonypi_compat_s sonypi_compat = {
1454         .open_count = ATOMIC_INIT(0),
1455 };
1456
1457 static int sonypi_misc_fasync(int fd, struct file *filp, int on)
1458 {
1459         int retval;
1460
1461         retval = fasync_helper(fd, filp, on, &sonypi_compat.fifo_async);
1462         if (retval < 0)
1463                 return retval;
1464         return 0;
1465 }
1466
1467 static int sonypi_misc_release(struct inode *inode, struct file *file)
1468 {
1469         sonypi_misc_fasync(-1, file, 0);
1470         atomic_dec(&sonypi_compat.open_count);
1471         return 0;
1472 }
1473
1474 static int sonypi_misc_open(struct inode *inode, struct file *file)
1475 {
1476         /* Flush input queue on first open */
1477         if (atomic_inc_return(&sonypi_compat.open_count) == 1)
1478                 kfifo_reset(sonypi_compat.fifo);
1479         return 0;
1480 }
1481
1482 static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
1483                                 size_t count, loff_t *pos)
1484 {
1485         ssize_t ret;
1486         unsigned char c;
1487
1488         if ((kfifo_len(sonypi_compat.fifo) == 0) &&
1489             (file->f_flags & O_NONBLOCK))
1490                 return -EAGAIN;
1491
1492         ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
1493                                        kfifo_len(sonypi_compat.fifo) != 0);
1494         if (ret)
1495                 return ret;
1496
1497         while (ret < count &&
1498                (kfifo_get(sonypi_compat.fifo, &c, sizeof(c)) == sizeof(c))) {
1499                 if (put_user(c, buf++))
1500                         return -EFAULT;
1501                 ret++;
1502         }
1503
1504         if (ret > 0) {
1505                 struct inode *inode = file->f_path.dentry->d_inode;
1506                 inode->i_atime = current_fs_time(inode->i_sb);
1507         }
1508
1509         return ret;
1510 }
1511
1512 static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
1513 {
1514         poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
1515         if (kfifo_len(sonypi_compat.fifo))
1516                 return POLLIN | POLLRDNORM;
1517         return 0;
1518 }
1519
1520 static int ec_read16(u8 addr, u16 *value)
1521 {
1522         u8 val_lb, val_hb;
1523         if (ec_read(addr, &val_lb))
1524                 return -1;
1525         if (ec_read(addr + 1, &val_hb))
1526                 return -1;
1527         *value = val_lb | (val_hb << 8);
1528         return 0;
1529 }
1530
1531 static int sonypi_misc_ioctl(struct inode *ip, struct file *fp,
1532                              unsigned int cmd, unsigned long arg)
1533 {
1534         int ret = 0;
1535         void __user *argp = (void __user *)arg;
1536         u8 val8;
1537         u16 val16;
1538         int value;
1539
1540         mutex_lock(&spic_dev.lock);
1541         switch (cmd) {
1542         case SONYPI_IOCGBRT:
1543                 if (sony_backlight_device == NULL) {
1544                         ret = -EIO;
1545                         break;
1546                 }
1547                 if (acpi_callgetfunc(sony_nc_acpi_handle, "GBRT", &value)) {
1548                         ret = -EIO;
1549                         break;
1550                 }
1551                 val8 = ((value & 0xff) - 1) << 5;
1552                 if (copy_to_user(argp, &val8, sizeof(val8)))
1553                                 ret = -EFAULT;
1554                 break;
1555         case SONYPI_IOCSBRT:
1556                 if (sony_backlight_device == NULL) {
1557                         ret = -EIO;
1558                         break;
1559                 }
1560                 if (copy_from_user(&val8, argp, sizeof(val8))) {
1561                         ret = -EFAULT;
1562                         break;
1563                 }
1564                 if (acpi_callsetfunc(sony_nc_acpi_handle, "SBRT",
1565                                 (val8 >> 5) + 1, NULL)) {
1566                         ret = -EIO;
1567                         break;
1568                 }
1569                 /* sync the backlight device status */
1570                 sony_backlight_device->props.brightness =
1571                     sony_backlight_get_brightness(sony_backlight_device);
1572                 break;
1573         case SONYPI_IOCGBAT1CAP:
1574                 if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
1575                         ret = -EIO;
1576                         break;
1577                 }
1578                 if (copy_to_user(argp, &val16, sizeof(val16)))
1579                         ret = -EFAULT;
1580                 break;
1581         case SONYPI_IOCGBAT1REM:
1582                 if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
1583                         ret = -EIO;
1584                         break;
1585                 }
1586                 if (copy_to_user(argp, &val16, sizeof(val16)))
1587                         ret = -EFAULT;
1588                 break;
1589         case SONYPI_IOCGBAT2CAP:
1590                 if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
1591                         ret = -EIO;
1592                         break;
1593                 }
1594                 if (copy_to_user(argp, &val16, sizeof(val16)))
1595                         ret = -EFAULT;
1596                 break;
1597         case SONYPI_IOCGBAT2REM:
1598                 if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
1599                         ret = -EIO;
1600                         break;
1601                 }
1602                 if (copy_to_user(argp, &val16, sizeof(val16)))
1603                         ret = -EFAULT;
1604                 break;
1605         case SONYPI_IOCGBATFLAGS:
1606                 if (ec_read(SONYPI_BAT_FLAGS, &val8)) {
1607                         ret = -EIO;
1608                         break;
1609                 }
1610                 val8 &= 0x07;
1611                 if (copy_to_user(argp, &val8, sizeof(val8)))
1612                         ret = -EFAULT;
1613                 break;
1614         case SONYPI_IOCGBLUE:
1615                 val8 = spic_dev.bluetooth_power;
1616                 if (copy_to_user(argp, &val8, sizeof(val8)))
1617                         ret = -EFAULT;
1618                 break;
1619         case SONYPI_IOCSBLUE:
1620                 if (copy_from_user(&val8, argp, sizeof(val8))) {
1621                         ret = -EFAULT;
1622                         break;
1623                 }
1624                 __sony_pic_set_bluetoothpower(val8);
1625                 break;
1626         /* FAN Controls */
1627         case SONYPI_IOCGFAN:
1628                 if (sony_pic_get_fanspeed(&val8)) {
1629                         ret = -EIO;
1630                         break;
1631                 }
1632                 if (copy_to_user(argp, &val8, sizeof(val8)))
1633                         ret = -EFAULT;
1634                 break;
1635         case SONYPI_IOCSFAN:
1636                 if (copy_from_user(&val8, argp, sizeof(val8))) {
1637                         ret = -EFAULT;
1638                         break;
1639                 }
1640                 if (sony_pic_set_fanspeed(val8))
1641                         ret = -EIO;
1642                 break;
1643         /* GET Temperature (useful under APM) */
1644         case SONYPI_IOCGTEMP:
1645                 if (ec_read(SONYPI_TEMP_STATUS, &val8)) {
1646                         ret = -EIO;
1647                         break;
1648                 }
1649                 if (copy_to_user(argp, &val8, sizeof(val8)))
1650                         ret = -EFAULT;
1651                 break;
1652         default:
1653                 ret = -EINVAL;
1654         }
1655         mutex_unlock(&spic_dev.lock);
1656         return ret;
1657 }
1658
1659 static const struct file_operations sonypi_misc_fops = {
1660         .owner          = THIS_MODULE,
1661         .read           = sonypi_misc_read,
1662         .poll           = sonypi_misc_poll,
1663         .open           = sonypi_misc_open,
1664         .release        = sonypi_misc_release,
1665         .fasync         = sonypi_misc_fasync,
1666         .ioctl          = sonypi_misc_ioctl,
1667 };
1668
1669 static struct miscdevice sonypi_misc_device = {
1670         .minor          = MISC_DYNAMIC_MINOR,
1671         .name           = "sonypi",
1672         .fops           = &sonypi_misc_fops,
1673 };
1674
1675 static void sonypi_compat_report_event(u8 event)
1676 {
1677         kfifo_put(sonypi_compat.fifo, (unsigned char *)&event, sizeof(event));
1678         kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
1679         wake_up_interruptible(&sonypi_compat.fifo_proc_list);
1680 }
1681
1682 static int sonypi_compat_init(void)
1683 {
1684         int error;
1685
1686         spin_lock_init(&sonypi_compat.fifo_lock);
1687         sonypi_compat.fifo = kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
1688                                          &sonypi_compat.fifo_lock);
1689         if (IS_ERR(sonypi_compat.fifo)) {
1690                 printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
1691                 return PTR_ERR(sonypi_compat.fifo);
1692         }
1693
1694         init_waitqueue_head(&sonypi_compat.fifo_proc_list);
1695
1696         if (minor != -1)
1697                 sonypi_misc_device.minor = minor;
1698         error = misc_register(&sonypi_misc_device);
1699         if (error) {
1700                 printk(KERN_ERR DRV_PFX "misc_register failed\n");
1701                 goto err_free_kfifo;
1702         }
1703         if (minor == -1)
1704                 printk(KERN_INFO DRV_PFX "device allocated minor is %d\n",
1705                        sonypi_misc_device.minor);
1706
1707         return 0;
1708
1709 err_free_kfifo:
1710         kfifo_free(sonypi_compat.fifo);
1711         return error;
1712 }
1713
1714 static void sonypi_compat_exit(void)
1715 {
1716         misc_deregister(&sonypi_misc_device);
1717         kfifo_free(sonypi_compat.fifo);
1718 }
1719 #else
1720 static int sonypi_compat_init(void) { return 0; }
1721 static void sonypi_compat_exit(void) { }
1722 static void sonypi_compat_report_event(u8 event) { }
1723 #endif /* CONFIG_SONY_LAPTOP_OLD */
1724
1725 /*
1726  * ACPI callbacks
1727  */
1728 static acpi_status
1729 sony_pic_read_possible_resource(struct acpi_resource *resource, void *context)
1730 {
1731         u32 i;
1732         struct sony_pic_dev *dev = (struct sony_pic_dev *)context;
1733
1734         switch (resource->type) {
1735         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1736         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1737                 return AE_OK;
1738
1739         case ACPI_RESOURCE_TYPE_IRQ:
1740                 {
1741                         struct acpi_resource_irq *p = &resource->data.irq;
1742                         struct sony_pic_irq *interrupt = NULL;
1743                         if (!p || !p->interrupt_count) {
1744                                 /*
1745                                  * IRQ descriptors may have no IRQ# bits set,
1746                                  * particularly those those w/ _STA disabled
1747                                  */
1748                                 dprintk("Blank IRQ resource\n");
1749                                 return AE_OK;
1750                         }
1751                         for (i = 0; i < p->interrupt_count; i++) {
1752                                 if (!p->interrupts[i]) {
1753                                         printk(KERN_WARNING DRV_PFX
1754                                                         "Invalid IRQ %d\n",
1755                                                         p->interrupts[i]);
1756                                         continue;
1757                                 }
1758                                 interrupt = kzalloc(sizeof(*interrupt),
1759                                                 GFP_KERNEL);
1760                                 if (!interrupt)
1761                                         return AE_ERROR;
1762
1763                                 list_add(&interrupt->list, &dev->interrupts);
1764                                 interrupt->irq.triggering = p->triggering;
1765                                 interrupt->irq.polarity = p->polarity;
1766                                 interrupt->irq.sharable = p->sharable;
1767                                 interrupt->irq.interrupt_count = 1;
1768                                 interrupt->irq.interrupts[0] = p->interrupts[i];
1769                         }
1770                         return AE_OK;
1771                 }
1772         case ACPI_RESOURCE_TYPE_IO:
1773                 {
1774                         struct acpi_resource_io *io = &resource->data.io;
1775                         struct sony_pic_ioport *ioport = NULL;
1776                         if (!io) {
1777                                 dprintk("Blank IO resource\n");
1778                                 return AE_OK;
1779                         }
1780
1781                         ioport = kzalloc(sizeof(*ioport), GFP_KERNEL);
1782                         if (!ioport)
1783                                 return AE_ERROR;
1784
1785                         list_add(&ioport->list, &dev->ioports);
1786                         memcpy(&ioport->io, io, sizeof(*io));
1787                         return AE_OK;
1788                 }
1789         default:
1790                 dprintk("Resource %d isn't an IRQ nor an IO port\n",
1791                                 resource->type);
1792
1793         case ACPI_RESOURCE_TYPE_END_TAG:
1794                 return AE_OK;
1795         }
1796         return AE_CTRL_TERMINATE;
1797 }
1798
1799 static int sony_pic_possible_resources(struct acpi_device *device)
1800 {
1801         int result = 0;
1802         acpi_status status = AE_OK;
1803
1804         if (!device)
1805                 return -EINVAL;
1806
1807         /* get device status */
1808         /* see acpi_pci_link_get_current acpi_pci_link_get_possible */
1809         dprintk("Evaluating _STA\n");
1810         result = acpi_bus_get_status(device);
1811         if (result) {
1812                 printk(KERN_WARNING DRV_PFX "Unable to read status\n");
1813                 goto end;
1814         }
1815
1816         if (!device->status.enabled)
1817                 dprintk("Device disabled\n");
1818         else
1819                 dprintk("Device enabled\n");
1820
1821         /*
1822          * Query and parse 'method'
1823          */
1824         dprintk("Evaluating %s\n", METHOD_NAME__PRS);
1825         status = acpi_walk_resources(device->handle, METHOD_NAME__PRS,
1826                         sony_pic_read_possible_resource, &spic_dev);
1827         if (ACPI_FAILURE(status)) {
1828                 printk(KERN_WARNING DRV_PFX
1829                                 "Failure evaluating %s\n",
1830                                 METHOD_NAME__PRS);
1831                 result = -ENODEV;
1832         }
1833 end:
1834         return result;
1835 }
1836
1837 /*
1838  *  Disable the spic device by calling its _DIS method
1839  */
1840 static int sony_pic_disable(struct acpi_device *device)
1841 {
1842         if (ACPI_FAILURE(acpi_evaluate_object(device->handle, "_DIS", 0, NULL)))
1843                 return -ENXIO;
1844
1845         dprintk("Device disabled\n");
1846         return 0;
1847 }
1848
1849
1850 /*
1851  *  Based on drivers/acpi/pci_link.c:acpi_pci_link_set
1852  *
1853  *  Call _SRS to set current resources
1854  */
1855 static int sony_pic_enable(struct acpi_device *device,
1856                 struct sony_pic_ioport *ioport, struct sony_pic_irq *irq)
1857 {
1858         acpi_status status;
1859         int result = 0;
1860         struct {
1861                 struct acpi_resource io_res;
1862                 struct acpi_resource irq_res;
1863                 struct acpi_resource end;
1864         } *resource;
1865         struct acpi_buffer buffer = { 0, NULL };
1866
1867         if (!ioport || !irq)
1868                 return -EINVAL;
1869
1870         /* init acpi_buffer */
1871         resource = kzalloc(sizeof(*resource) + 1, GFP_KERNEL);
1872         if (!resource)
1873                 return -ENOMEM;
1874
1875         buffer.length = sizeof(*resource) + 1;
1876         buffer.pointer = resource;
1877
1878         /* setup io resource */
1879         resource->io_res.type = ACPI_RESOURCE_TYPE_IO;
1880         resource->io_res.length = sizeof(struct acpi_resource);
1881         memcpy(&resource->io_res.data.io, &ioport->io,
1882                         sizeof(struct acpi_resource_io));
1883
1884         /* setup irq resource */
1885         resource->irq_res.type = ACPI_RESOURCE_TYPE_IRQ;
1886         resource->irq_res.length = sizeof(struct acpi_resource);
1887         memcpy(&resource->irq_res.data.irq, &irq->irq,
1888                         sizeof(struct acpi_resource_irq));
1889         /* we requested a shared irq */
1890         resource->irq_res.data.irq.sharable = ACPI_SHARED;
1891
1892         resource->end.type = ACPI_RESOURCE_TYPE_END_TAG;
1893
1894         /* Attempt to set the resource */
1895         dprintk("Evaluating _SRS\n");
1896         status = acpi_set_current_resources(device->handle, &buffer);
1897
1898         /* check for total failure */
1899         if (ACPI_FAILURE(status)) {
1900                 printk(KERN_ERR DRV_PFX "Error evaluating _SRS");
1901                 result = -ENODEV;
1902                 goto end;
1903         }
1904
1905         /* Necessary device initializations calls (from sonypi) */
1906         sony_pic_call1(0x82);
1907         sony_pic_call2(0x81, 0xff);
1908         sony_pic_call1(compat ? 0x92 : 0x82);
1909
1910 end:
1911         kfree(resource);
1912         return result;
1913 }
1914
1915 /*****************
1916  *
1917  * ISR: some event is available
1918  *
1919  *****************/
1920 static irqreturn_t sony_pic_irq(int irq, void *dev_id)
1921 {
1922         int i, j;
1923         u32 port_val = 0;
1924         u8 ev = 0;
1925         u8 data_mask = 0;
1926         u8 device_event = 0;
1927
1928         struct sony_pic_dev *dev = (struct sony_pic_dev *) dev_id;
1929
1930         acpi_os_read_port(dev->cur_ioport->io.minimum, &port_val,
1931                         dev->cur_ioport->io.address_length);
1932         ev = port_val & SONY_PIC_EV_MASK;
1933         data_mask = 0xff & (port_val >> (dev->cur_ioport->io.address_length - 8));
1934
1935         dprintk("event (0x%.8x [%.2x] [%.2x]) at port 0x%.4x\n",
1936                         port_val, ev, data_mask, dev->cur_ioport->io.minimum);
1937
1938         if (ev == 0x00 || ev == 0xff)
1939                 return IRQ_HANDLED;
1940
1941         for (i = 0; sony_pic_eventtypes[i].model; i++) {
1942
1943                 if (spic_dev.model != sony_pic_eventtypes[i].model)
1944                         continue;
1945
1946                 if ((data_mask & sony_pic_eventtypes[i].data) !=
1947                     sony_pic_eventtypes[i].data)
1948                         continue;
1949
1950                 if (!(mask & sony_pic_eventtypes[i].mask))
1951                         continue;
1952
1953                 for (j = 0; sony_pic_eventtypes[i].events[j].event; j++) {
1954                         if (ev == sony_pic_eventtypes[i].events[j].data) {
1955                                 device_event =
1956                                         sony_pic_eventtypes[i].events[j].event;
1957                                 goto found;
1958                         }
1959                 }
1960         }
1961         return IRQ_HANDLED;
1962
1963 found:
1964         sony_laptop_report_input_event(device_event);
1965         acpi_bus_generate_event(spic_dev.acpi_dev, 1, device_event);
1966         sonypi_compat_report_event(device_event);
1967
1968         return IRQ_HANDLED;
1969 }
1970
1971 /*****************
1972  *
1973  *  ACPI driver
1974  *
1975  *****************/
1976 static int sony_pic_remove(struct acpi_device *device, int type)
1977 {
1978         struct sony_pic_ioport *io, *tmp_io;
1979         struct sony_pic_irq *irq, *tmp_irq;
1980
1981         sonypi_compat_exit();
1982
1983         if (sony_pic_disable(device)) {
1984                 printk(KERN_ERR DRV_PFX "Couldn't disable device.\n");
1985                 return -ENXIO;
1986         }
1987
1988         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
1989         release_region(spic_dev.cur_ioport->io.minimum,
1990                         spic_dev.cur_ioport->io.address_length);
1991
1992         sony_laptop_remove_input();
1993
1994         /* pf attrs */
1995         sysfs_remove_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
1996         sony_pf_remove();
1997
1998         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
1999                 list_del(&io->list);
2000                 kfree(io);
2001         }
2002         list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
2003                 list_del(&irq->list);
2004                 kfree(irq);
2005         }
2006         spic_dev.cur_ioport = NULL;
2007         spic_dev.cur_irq = NULL;
2008
2009         dprintk(SONY_PIC_DRIVER_NAME " removed.\n");
2010         return 0;
2011 }
2012
2013 static int sony_pic_add(struct acpi_device *device)
2014 {
2015         int result;
2016         struct sony_pic_ioport *io, *tmp_io;
2017         struct sony_pic_irq *irq, *tmp_irq;
2018
2019         printk(KERN_INFO DRV_PFX "%s v%s.\n",
2020                 SONY_PIC_DRIVER_NAME, SONY_LAPTOP_DRIVER_VERSION);
2021
2022         spic_dev.acpi_dev = device;
2023         strcpy(acpi_device_class(device), "sony/hotkey");
2024         spic_dev.model = sony_pic_detect_device_type();
2025         mutex_init(&spic_dev.lock);
2026
2027         /* read _PRS resources */
2028         result = sony_pic_possible_resources(device);
2029         if (result) {
2030                 printk(KERN_ERR DRV_PFX
2031                                 "Unabe to read possible resources.\n");
2032                 goto err_free_resources;
2033         }
2034
2035         /* setup input devices and helper fifo */
2036         result = sony_laptop_setup_input();
2037         if (result) {
2038                 printk(KERN_ERR DRV_PFX
2039                                 "Unabe to create input devices.\n");
2040                 goto err_free_resources;
2041         }
2042
2043         /* request io port */
2044         list_for_each_entry(io, &spic_dev.ioports, list) {
2045                 if (request_region(io->io.minimum, io->io.address_length,
2046                                         "Sony Programable I/O Device")) {
2047                         dprintk("I/O port: 0x%.4x (0x%.4x) + 0x%.2x\n",
2048                                         io->io.minimum, io->io.maximum,
2049                                         io->io.address_length);
2050                         spic_dev.cur_ioport = io;
2051                         break;
2052                 }
2053         }
2054         if (!spic_dev.cur_ioport) {
2055                 printk(KERN_ERR DRV_PFX "Failed to request_region.\n");
2056                 result = -ENODEV;
2057                 goto err_remove_input;
2058         }
2059
2060         /* request IRQ */
2061         list_for_each_entry(irq, &spic_dev.interrupts, list) {
2062                 if (!request_irq(irq->irq.interrupts[0], sony_pic_irq,
2063                                         IRQF_SHARED, "sony-laptop", &spic_dev)) {
2064                         dprintk("IRQ: %d - triggering: %d - "
2065                                         "polarity: %d - shr: %d\n",
2066                                         irq->irq.interrupts[0],
2067                                         irq->irq.triggering,
2068                                         irq->irq.polarity,
2069                                         irq->irq.sharable);
2070                         spic_dev.cur_irq = irq;
2071                         break;
2072                 }
2073         }
2074         if (!spic_dev.cur_irq) {
2075                 printk(KERN_ERR DRV_PFX "Failed to request_irq.\n");
2076                 result = -ENODEV;
2077                 goto err_release_region;
2078         }
2079
2080         /* set resource status _SRS */
2081         result = sony_pic_enable(device, spic_dev.cur_ioport, spic_dev.cur_irq);
2082         if (result) {
2083                 printk(KERN_ERR DRV_PFX "Couldn't enable device.\n");
2084                 goto err_free_irq;
2085         }
2086
2087         spic_dev.bluetooth_power = -1;
2088         /* create device attributes */
2089         result = sony_pf_add();
2090         if (result)
2091                 goto err_disable_device;
2092
2093         result = sysfs_create_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
2094         if (result)
2095                 goto err_remove_pf;
2096
2097         if (sonypi_compat_init())
2098                 goto err_remove_pf;
2099
2100         return 0;
2101
2102 err_remove_pf:
2103         sony_pf_remove();
2104
2105 err_disable_device:
2106         sony_pic_disable(device);
2107
2108 err_free_irq:
2109         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
2110
2111 err_release_region:
2112         release_region(spic_dev.cur_ioport->io.minimum,
2113                         spic_dev.cur_ioport->io.address_length);
2114
2115 err_remove_input:
2116         sony_laptop_remove_input();
2117
2118 err_free_resources:
2119         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
2120                 list_del(&io->list);
2121                 kfree(io);
2122         }
2123         list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
2124                 list_del(&irq->list);
2125                 kfree(irq);
2126         }
2127         spic_dev.cur_ioport = NULL;
2128         spic_dev.cur_irq = NULL;
2129
2130         return result;
2131 }
2132
2133 static int sony_pic_suspend(struct acpi_device *device, pm_message_t state)
2134 {
2135         if (sony_pic_disable(device))
2136                 return -ENXIO;
2137         return 0;
2138 }
2139
2140 static int sony_pic_resume(struct acpi_device *device)
2141 {
2142         sony_pic_enable(device, spic_dev.cur_ioport, spic_dev.cur_irq);
2143         return 0;
2144 }
2145
2146 static struct acpi_driver sony_pic_driver = {
2147         .name = SONY_PIC_DRIVER_NAME,
2148         .class = SONY_PIC_CLASS,
2149         .ids = SONY_PIC_HID,
2150         .owner = THIS_MODULE,
2151         .ops = {
2152                 .add = sony_pic_add,
2153                 .remove = sony_pic_remove,
2154                 .suspend = sony_pic_suspend,
2155                 .resume = sony_pic_resume,
2156                 },
2157 };
2158
2159 static struct dmi_system_id __initdata sonypi_dmi_table[] = {
2160         {
2161                 .ident = "Sony Vaio",
2162                 .matches = {
2163                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
2164                         DMI_MATCH(DMI_PRODUCT_NAME, "PCG-"),
2165                 },
2166         },
2167         {
2168                 .ident = "Sony Vaio",
2169                 .matches = {
2170                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
2171                         DMI_MATCH(DMI_PRODUCT_NAME, "VGN-"),
2172                 },
2173         },
2174         { }
2175 };
2176
2177 static int __init sony_laptop_init(void)
2178 {
2179         int result;
2180
2181         if (!no_spic && dmi_check_system(sonypi_dmi_table)) {
2182                 result = acpi_bus_register_driver(&sony_pic_driver);
2183                 if (result) {
2184                         printk(KERN_ERR DRV_PFX
2185                                         "Unable to register SPIC driver.");
2186                         goto out;
2187                 }
2188         }
2189
2190         result = acpi_bus_register_driver(&sony_nc_driver);
2191         if (result) {
2192                 printk(KERN_ERR DRV_PFX "Unable to register SNC driver.");
2193                 goto out_unregister_pic;
2194         }
2195
2196         return 0;
2197
2198 out_unregister_pic:
2199         if (!no_spic)
2200                 acpi_bus_unregister_driver(&sony_pic_driver);
2201 out:
2202         return result;
2203 }
2204
2205 static void __exit sony_laptop_exit(void)
2206 {
2207         acpi_bus_unregister_driver(&sony_nc_driver);
2208         if (!no_spic)
2209                 acpi_bus_unregister_driver(&sony_pic_driver);
2210 }
2211
2212 module_init(sony_laptop_init);
2213 module_exit(sony_laptop_exit);