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 #include <linux/sony-laptop.h>
  66 #ifdef CONFIG_SONYPI_COMPAT
  67 #include <linux/poll.h>
  68 #include <linux/miscdevice.h>
  69 #endif
  70
  71 #define DRV_PFX                 "sony-laptop: "
  72 #define dprintk(msg...)         do {                    \
  73         if (debug) printk(KERN_WARNING DRV_PFX  msg);   \
  74 } while (0)
  75
  76 #define SONY_LAPTOP_DRIVER_VERSION      "0.5"
  77
  78 #define SONY_NC_CLASS           "sony-nc"
  79 #define SONY_NC_HID             "SNY5001"
  80 #define SONY_NC_DRIVER_NAME     "Sony Notebook Control Driver"
  81
  82 #define SONY_PIC_CLASS          "sony-pic"
  83 #define SONY_PIC_HID            "SNY6001"
  84 #define SONY_PIC_DRIVER_NAME    "Sony Programmable IO Control Driver"
  85
  86 MODULE_AUTHOR("Stelian Pop, Mattia Dongili");
  87 MODULE_DESCRIPTION("Sony laptop extras driver (SPIC and SNC ACPI device)");
  88 MODULE_LICENSE("GPL");
  89 MODULE_VERSION(SONY_LAPTOP_DRIVER_VERSION);
  90
  91 static int debug;
  92 module_param(debug, int, 0);
  93 MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
  94                  "the development of this driver");
  95
  96 static int no_spic;             /* = 0 */
  97 module_param(no_spic, int, 0444);
  98 MODULE_PARM_DESC(no_spic,
  99                  "set this if you don't want to enable the SPIC device");
 100
 101 static int compat;              /* = 0 */
 102 module_param(compat, int, 0444);
 103 MODULE_PARM_DESC(compat,
 104                  "set this if you want to enable backward compatibility mode");
 105
 106 static unsigned long mask = 0xffffffff;
 107 module_param(mask, ulong, 0644);
 108 MODULE_PARM_DESC(mask,
 109                  "set this to the mask of event you want to enable (see doc)");
 110
 111 static int camera;              /* = 0 */
 112 module_param(camera, int, 0444);
 113 MODULE_PARM_DESC(camera,
 114                  "set this to 1 to enable Motion Eye camera controls "
 115                  "(only use it if you have a C1VE or C1VN model)");
 116
 117 #ifdef CONFIG_SONYPI_COMPAT
 118 static int minor = -1;
 119 module_param(minor, int, 0);
 120 MODULE_PARM_DESC(minor,
 121                  "minor number of the misc device for the SPIC compatibility code, "
 122                  "default is -1 (automatic)");
 123 #endif
 124
 125 /*********** Input Devices ***********/
 126
 127 #define SONY_LAPTOP_BUF_SIZE    128
 128 struct sony_laptop_input_s {
 129         atomic_t                users;
 130         struct input_dev        *jog_dev;
 131         struct input_dev        *key_dev;
 132         struct kfifo            *fifo;
 133         spinlock_t              fifo_lock;
 134         struct workqueue_struct *wq;
 135 };
 136 static struct sony_laptop_input_s sony_laptop_input = {
 137         .users = ATOMIC_INIT(0),
 138 };
 139
 140 struct sony_laptop_keypress {
 141         struct input_dev *dev;
 142         int key;
 143 };
 144
 145 /* Correspondance table between sonypi events and input layer events */
 146 static struct {
 147         int sonypiev;
 148         int inputev;
 149 } sony_laptop_inputkeys[] = {
 150         { SONYPI_EVENT_CAPTURE_PRESSED,         KEY_CAMERA },
 151         { SONYPI_EVENT_FNKEY_ONLY,              KEY_FN },
 152         { SONYPI_EVENT_FNKEY_ESC,               KEY_FN_ESC },
 153         { SONYPI_EVENT_FNKEY_F1,                KEY_FN_F1 },
 154         { SONYPI_EVENT_FNKEY_F2,                KEY_FN_F2 },
 155         { SONYPI_EVENT_FNKEY_F3,                KEY_FN_F3 },
 156         { SONYPI_EVENT_FNKEY_F4,                KEY_FN_F4 },
 157         { SONYPI_EVENT_FNKEY_F5,                KEY_FN_F5 },
 158         { SONYPI_EVENT_FNKEY_F6,                KEY_FN_F6 },
 159         { SONYPI_EVENT_FNKEY_F7,                KEY_FN_F7 },
 160         { SONYPI_EVENT_FNKEY_F8,                KEY_FN_F8 },
 161         { SONYPI_EVENT_FNKEY_F9,                KEY_FN_F9 },
 162         { SONYPI_EVENT_FNKEY_F10,               KEY_FN_F10 },
 163         { SONYPI_EVENT_FNKEY_F11,               KEY_FN_F11 },
 164         { SONYPI_EVENT_FNKEY_F12,               KEY_FN_F12 },
 165         { SONYPI_EVENT_FNKEY_1,                 KEY_FN_1 },
 166         { SONYPI_EVENT_FNKEY_2,                 KEY_FN_2 },
 167         { SONYPI_EVENT_FNKEY_D,                 KEY_FN_D },
 168         { SONYPI_EVENT_FNKEY_E,                 KEY_FN_E },
 169         { SONYPI_EVENT_FNKEY_F,                 KEY_FN_F },
 170         { SONYPI_EVENT_FNKEY_S,                 KEY_FN_S },
 171         { SONYPI_EVENT_FNKEY_B,                 KEY_FN_B },
 172         { SONYPI_EVENT_BLUETOOTH_PRESSED,       KEY_BLUE },
 173         { SONYPI_EVENT_BLUETOOTH_ON,            KEY_BLUE },
 174         { SONYPI_EVENT_PKEY_P1,                 KEY_PROG1 },
 175         { SONYPI_EVENT_PKEY_P2,                 KEY_PROG2 },
 176         { SONYPI_EVENT_PKEY_P3,                 KEY_PROG3 },
 177         { SONYPI_EVENT_BACK_PRESSED,            KEY_BACK },
 178         { SONYPI_EVENT_HELP_PRESSED,            KEY_HELP },
 179         { SONYPI_EVENT_ZOOM_PRESSED,            KEY_ZOOM },
 180         { SONYPI_EVENT_THUMBPHRASE_PRESSED,     BTN_THUMB },
 181         { 0, 0 },
 182 };
 183
 184 /* release buttons after a short delay if pressed */
 185 static void do_sony_laptop_release_key(struct work_struct *work)
 186 {
 187         struct sony_laptop_keypress kp;
 188
 189         while (kfifo_get(sony_laptop_input.fifo, (unsigned char *)&kp,
 190                          sizeof(kp)) == sizeof(kp)) {
 191                 msleep(10);
 192                 input_report_key(kp.dev, kp.key, 0);
 193                 input_sync(kp.dev);
 194         }
 195 }
 196 static DECLARE_WORK(sony_laptop_release_key_work,
 197                 do_sony_laptop_release_key);
 198
 199 /* forward event to the input subsytem */
 200 static void sony_laptop_report_input_event(u8 event)
 201 {
 202         struct input_dev *jog_dev = sony_laptop_input.jog_dev;
 203         struct input_dev *key_dev = sony_laptop_input.key_dev;
 204         struct sony_laptop_keypress kp = { NULL };
 205         int i;
 206
 207         if (event == SONYPI_EVENT_FNKEY_RELEASED) {
 208                 /* Nothing, not all VAIOs generate this event */
 209                 return;
 210         }
 211
 212         /* report events */
 213         switch (event) {
 214         /* jog_dev events */
 215         case SONYPI_EVENT_JOGDIAL_UP:
 216         case SONYPI_EVENT_JOGDIAL_UP_PRESSED:
 217                 input_report_rel(jog_dev, REL_WHEEL, 1);
 218                 input_sync(jog_dev);
 219                 return;
 220
 221         case SONYPI_EVENT_JOGDIAL_DOWN:
 222         case SONYPI_EVENT_JOGDIAL_DOWN_PRESSED:
 223                 input_report_rel(jog_dev, REL_WHEEL, -1);
 224                 input_sync(jog_dev);
 225                 return;
 226
 227         /* key_dev events */
 228         case SONYPI_EVENT_JOGDIAL_PRESSED:
 229                 kp.key = BTN_MIDDLE;
 230                 kp.dev = jog_dev;
 231                 break;
 232
 233         default:
 234                 for (i = 0; sony_laptop_inputkeys[i].sonypiev; i++)
 235                         if (event == sony_laptop_inputkeys[i].sonypiev) {
 236                                 kp.dev = key_dev;
 237                                 kp.key = sony_laptop_inputkeys[i].inputev;
 238                                 break;
 239                         }
 240                 break;
 241         }
 242
 243         if (kp.dev) {
 244                 input_report_key(kp.dev, kp.key, 1);
 245                 input_sync(kp.dev);
 246                 kfifo_put(sony_laptop_input.fifo,
 247                           (unsigned char *)&kp, sizeof(kp));
 248
 249                 if (!work_pending(&sony_laptop_release_key_work))
 250                         queue_work(sony_laptop_input.wq,
 251                                         &sony_laptop_release_key_work);
 252         } else
 253                 dprintk("unknown input event %.2x\n", event);
 254 }
 255
 256 static int sony_laptop_setup_input(void)
 257 {
 258         struct input_dev *jog_dev;
 259         struct input_dev *key_dev;
 260         int i;
 261         int error;
 262
 263         /* don't run again if already initialized */
 264         if (atomic_add_return(1, &sony_laptop_input.users) > 1)
 265                 return 0;
 266
 267         /* kfifo */
 268         spin_lock_init(&sony_laptop_input.fifo_lock);
 269         sony_laptop_input.fifo =
 270                 kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
 271                             &sony_laptop_input.fifo_lock);
 272         if (IS_ERR(sony_laptop_input.fifo)) {
 273                 printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
 274                 error = PTR_ERR(sony_laptop_input.fifo);
 275                 goto err_dec_users;
 276         }
 277
 278         /* init workqueue */
 279         sony_laptop_input.wq = create_singlethread_workqueue("sony-laptop");
 280         if (!sony_laptop_input.wq) {
 281                 printk(KERN_ERR DRV_PFX
 282                                 "Unabe to create workqueue.\n");
 283                 error = -ENXIO;
 284                 goto err_free_kfifo;
 285         }
 286
 287         /* input keys */
 288         key_dev = input_allocate_device();
 289         if (!key_dev) {
 290                 error = -ENOMEM;
 291                 goto err_destroy_wq;
 292         }
 293
 294         key_dev->name = "Sony Vaio Keys";
 295         key_dev->id.bustype = BUS_ISA;
 296         key_dev->id.vendor = PCI_VENDOR_ID_SONY;
 297
 298         /* Initialize the Input Drivers: special keys */
 299         key_dev->evbit[0] = BIT(EV_KEY);
 300         for (i = 0; sony_laptop_inputkeys[i].sonypiev; i++)
 301                 if (sony_laptop_inputkeys[i].inputev)
 302                         set_bit(sony_laptop_inputkeys[i].inputev,
 303                                         key_dev->keybit);
 304
 305         error = input_register_device(key_dev);
 306         if (error)
 307                 goto err_free_keydev;
 308
 309         sony_laptop_input.key_dev = key_dev;
 310
 311         /* jogdial */
 312         jog_dev = input_allocate_device();
 313         if (!jog_dev) {
 314                 error = -ENOMEM;
 315                 goto err_unregister_keydev;
 316         }
 317
 318         jog_dev->name = "Sony Vaio Jogdial";
 319         jog_dev->id.bustype = BUS_ISA;
 320         jog_dev->id.vendor = PCI_VENDOR_ID_SONY;
 321
 322         jog_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
 323         jog_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_MIDDLE);
 324         jog_dev->relbit[0] = BIT(REL_WHEEL);
 325
 326         error = input_register_device(jog_dev);
 327         if (error)
 328                 goto err_free_jogdev;
 329
 330         sony_laptop_input.jog_dev = jog_dev;
 331
 332         return 0;
 333
 334 err_free_jogdev:
 335         input_free_device(jog_dev);
 336
 337 err_unregister_keydev:
 338         input_unregister_device(key_dev);
 339         /* to avoid kref underflow below at input_free_device */
 340         key_dev = NULL;
 341
 342 err_free_keydev:
 343         input_free_device(key_dev);
 344
 345 err_destroy_wq:
 346         destroy_workqueue(sony_laptop_input.wq);
 347
 348 err_free_kfifo:
 349         kfifo_free(sony_laptop_input.fifo);
 350
 351 err_dec_users:
 352         atomic_dec(&sony_laptop_input.users);
 353         return error;
 354 }
 355
 356 static void sony_laptop_remove_input(void)
 357 {
 358         /* cleanup only after the last user has gone */
 359         if (!atomic_dec_and_test(&sony_laptop_input.users))
 360                 return;
 361
 362         /* flush workqueue first */
 363         flush_workqueue(sony_laptop_input.wq);
 364
 365         /* destroy input devs */
 366         input_unregister_device(sony_laptop_input.key_dev);
 367         sony_laptop_input.key_dev = NULL;
 368
 369         if (sony_laptop_input.jog_dev) {
 370                 input_unregister_device(sony_laptop_input.jog_dev);
 371                 sony_laptop_input.jog_dev = NULL;
 372         }
 373
 374         destroy_workqueue(sony_laptop_input.wq);
 375         kfifo_free(sony_laptop_input.fifo);
 376 }
 377
 378 /*********** Platform Device ***********/
 379
 380 static atomic_t sony_pf_users = ATOMIC_INIT(0);
 381 static struct platform_driver sony_pf_driver = {
 382         .driver = {
 383                    .name = "sony-laptop",
 384                    .owner = THIS_MODULE,
 385                    }
 386 };
 387 static struct platform_device *sony_pf_device;
 388
 389 static int sony_pf_add(void)
 390 {
 391         int ret = 0;
 392
 393         /* don't run again if already initialized */
 394         if (atomic_add_return(1, &sony_pf_users) > 1)
 395                 return 0;
 396
 397         ret = platform_driver_register(&sony_pf_driver);
 398         if (ret)
 399                 goto out;
 400
 401         sony_pf_device = platform_device_alloc("sony-laptop", -1);
 402         if (!sony_pf_device) {
 403                 ret = -ENOMEM;
 404                 goto out_platform_registered;
 405         }
 406
 407         ret = platform_device_add(sony_pf_device);
 408         if (ret)
 409                 goto out_platform_alloced;
 410
 411         return 0;
 412
 413       out_platform_alloced:
 414         platform_device_put(sony_pf_device);
 415         sony_pf_device = NULL;
 416       out_platform_registered:
 417         platform_driver_unregister(&sony_pf_driver);
 418       out:
 419         atomic_dec(&sony_pf_users);
 420         return ret;
 421 }
 422
 423 static void sony_pf_remove(void)
 424 {
 425         /* deregister only after the last user has gone */
 426         if (!atomic_dec_and_test(&sony_pf_users))
 427                 return;
 428
 429         platform_device_del(sony_pf_device);
 430         platform_device_put(sony_pf_device);
 431         platform_driver_unregister(&sony_pf_driver);
 432 }
 433
 434 /*********** SNC (SNY5001) Device ***********/
 435
 436 /* the device uses 1-based values, while the backlight subsystem uses
 437    0-based values */
 438 #define SONY_MAX_BRIGHTNESS     8
 439
 440 #define SNC_VALIDATE_IN         0
 441 #define SNC_VALIDATE_OUT        1
 442
 443 static ssize_t sony_nc_sysfs_show(struct device *, struct device_attribute *,
 444                               char *);
 445 static ssize_t sony_nc_sysfs_store(struct device *, struct device_attribute *,
 446                                const char *, size_t);
 447 static int boolean_validate(const int, const int);
 448 static int brightness_default_validate(const int, const int);
 449
 450 struct sony_nc_value {
 451         char *name;             /* name of the entry */
 452         char **acpiget;         /* names of the ACPI get function */
 453         char **acpiset;         /* names of the ACPI set function */
 454         int (*validate)(const int, const int);  /* input/output validation */
 455         int value;              /* current setting */
 456         int valid;              /* Has ever been set */
 457         int debug;              /* active only in debug mode ? */
 458         struct device_attribute devattr;        /* sysfs atribute */
 459 };
 460
 461 #define SNC_HANDLE_NAMES(_name, _values...) \
 462         static char *snc_##_name[] = { _values, NULL }
 463
 464 #define SNC_HANDLE(_name, _getters, _setters, _validate, _debug) \
 465         { \
 466                 .name           = __stringify(_name), \
 467                 .acpiget        = _getters, \
 468                 .acpiset        = _setters, \
 469                 .validate       = _validate, \
 470                 .debug          = _debug, \
 471                 .devattr        = __ATTR(_name, 0, sony_nc_sysfs_show, sony_nc_sysfs_store), \
 472         }
 473
 474 #define SNC_HANDLE_NULL { .name = NULL }
 475
 476 SNC_HANDLE_NAMES(fnkey_get, "GHKE");
 477
 478 SNC_HANDLE_NAMES(brightness_def_get, "GPBR");
 479 SNC_HANDLE_NAMES(brightness_def_set, "SPBR");
 480
 481 SNC_HANDLE_NAMES(cdpower_get, "GCDP");
 482 SNC_HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");
 483
 484 SNC_HANDLE_NAMES(audiopower_get, "GAZP");
 485 SNC_HANDLE_NAMES(audiopower_set, "AZPW");
 486
 487 SNC_HANDLE_NAMES(lanpower_get, "GLNP");
 488 SNC_HANDLE_NAMES(lanpower_set, "LNPW");
 489
 490 SNC_HANDLE_NAMES(PID_get, "GPID");
 491
 492 SNC_HANDLE_NAMES(CTR_get, "GCTR");
 493 SNC_HANDLE_NAMES(CTR_set, "SCTR");
 494
 495 SNC_HANDLE_NAMES(PCR_get, "GPCR");
 496 SNC_HANDLE_NAMES(PCR_set, "SPCR");
 497
 498 SNC_HANDLE_NAMES(CMI_get, "GCMI");
 499 SNC_HANDLE_NAMES(CMI_set, "SCMI");
 500
 501 static struct sony_nc_value sony_nc_values[] = {
 502         SNC_HANDLE(brightness_default, snc_brightness_def_get,
 503                         snc_brightness_def_set, brightness_default_validate, 0),
 504         SNC_HANDLE(fnkey, snc_fnkey_get, NULL, NULL, 0),
 505         SNC_HANDLE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0),
 506         SNC_HANDLE(audiopower, snc_audiopower_get, snc_audiopower_set,
 507                         boolean_validate, 0),
 508         SNC_HANDLE(lanpower, snc_lanpower_get, snc_lanpower_set,
 509                         boolean_validate, 1),
 510         /* unknown methods */
 511         SNC_HANDLE(PID, snc_PID_get, NULL, NULL, 1),
 512         SNC_HANDLE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1),
 513         SNC_HANDLE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1),
 514         SNC_HANDLE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1),
 515         SNC_HANDLE_NULL
 516 };
 517
 518 static acpi_handle sony_nc_acpi_handle;
 519 static struct acpi_device *sony_nc_acpi_device = NULL;
 520
 521 /*
 522  * acpi_evaluate_object wrappers
 523  */
 524 static int acpi_callgetfunc(acpi_handle handle, char *name, int *result)
 525 {
 526         struct acpi_buffer output;
 527         union acpi_object out_obj;
 528         acpi_status status;
 529
 530         output.length = sizeof(out_obj);
 531         output.pointer = &out_obj;
 532
 533         status = acpi_evaluate_object(handle, name, NULL, &output);
 534         if ((status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER)) {
 535                 *result = out_obj.integer.value;
 536                 return 0;
 537         }
 538
 539         printk(KERN_WARNING DRV_PFX "acpi_callreadfunc failed\n");
 540
 541         return -1;
 542 }
 543
 544 static int acpi_callsetfunc(acpi_handle handle, char *name, int value,
 545                             int *result)
 546 {
 547         struct acpi_object_list params;
 548         union acpi_object in_obj;
 549         struct acpi_buffer output;
 550         union acpi_object out_obj;
 551         acpi_status status;
 552
 553         params.count = 1;
 554         params.pointer = &in_obj;
 555         in_obj.type = ACPI_TYPE_INTEGER;
 556         in_obj.integer.value = value;
 557
 558         output.length = sizeof(out_obj);
 559         output.pointer = &out_obj;
 560
 561         status = acpi_evaluate_object(handle, name, &params, &output);
 562         if (status == AE_OK) {
 563                 if (result != NULL) {
 564                         if (out_obj.type != ACPI_TYPE_INTEGER) {
 565                                 printk(KERN_WARNING DRV_PFX "acpi_evaluate_object bad "
 566                                        "return type\n");
 567                                 return -1;
 568                         }
 569                         *result = out_obj.integer.value;
 570                 }
 571                 return 0;
 572         }
 573
 574         printk(KERN_WARNING DRV_PFX "acpi_evaluate_object failed\n");
 575
 576         return -1;
 577 }
 578
 579 /*
 580  * sony_nc_values input/output validate functions
 581  */
 582
 583 /* brightness_default_validate:
 584  *
 585  * manipulate input output values to keep consistency with the
 586  * backlight framework for which brightness values are 0-based.
 587  */
 588 static int brightness_default_validate(const int direction, const int value)
 589 {
 590         switch (direction) {
 591                 case SNC_VALIDATE_OUT:
 592                         return value - 1;
 593                 case SNC_VALIDATE_IN:
 594                         if (value >= 0 && value < SONY_MAX_BRIGHTNESS)
 595                                 return value + 1;
 596         }
 597         return -EINVAL;
 598 }
 599
 600 /* boolean_validate:
 601  *
 602  * on input validate boolean values 0/1, on output just pass the
 603  * received value.
 604  */
 605 static int boolean_validate(const int direction, const int value)
 606 {
 607         if (direction == SNC_VALIDATE_IN) {
 608                 if (value != 0 && value != 1)
 609                         return -EINVAL;
 610         }
 611         return value;
 612 }
 613
 614 /*
 615  * Sysfs show/store common to all sony_nc_values
 616  */
 617 static ssize_t sony_nc_sysfs_show(struct device *dev, struct device_attribute *attr,
 618                               char *buffer)
 619 {
 620         int value;
 621         struct sony_nc_value *item =
 622             container_of(attr, struct sony_nc_value, devattr);
 623
 624         if (!*item->acpiget)
 625                 return -EIO;
 626
 627         if (acpi_callgetfunc(sony_nc_acpi_handle, *item->acpiget, &value) < 0)
 628                 return -EIO;
 629
 630         if (item->validate)
 631                 value = item->validate(SNC_VALIDATE_OUT, value);
 632
 633         return snprintf(buffer, PAGE_SIZE, "%d\n", value);
 634 }
 635
 636 static ssize_t sony_nc_sysfs_store(struct device *dev,
 637                                struct device_attribute *attr,
 638                                const char *buffer, size_t count)
 639 {
 640         int value;
 641         struct sony_nc_value *item =
 642             container_of(attr, struct sony_nc_value, devattr);
 643
 644         if (!item->acpiset)
 645                 return -EIO;
 646
 647         if (count > 31)
 648                 return -EINVAL;
 649
 650         value = simple_strtoul(buffer, NULL, 10);
 651
 652         if (item->validate)
 653                 value = item->validate(SNC_VALIDATE_IN, value);
 654
 655         if (value < 0)
 656                 return value;
 657
 658         if (acpi_callsetfunc(sony_nc_acpi_handle, *item->acpiset, value, NULL) < 0)
 659                 return -EIO;
 660         item->value = value;
 661         item->valid = 1;
 662         return count;
 663 }
 664
 665
 666 /*
 667  * Backlight device
 668  */
 669 static int sony_backlight_update_status(struct backlight_device *bd)
 670 {
 671         return acpi_callsetfunc(sony_nc_acpi_handle, "SBRT",
 672                                 bd->props.brightness + 1, NULL);
 673 }
 674
 675 static int sony_backlight_get_brightness(struct backlight_device *bd)
 676 {
 677         int value;
 678
 679         if (acpi_callgetfunc(sony_nc_acpi_handle, "GBRT", &value))
 680                 return 0;
 681         /* brightness levels are 1-based, while backlight ones are 0-based */
 682         return value - 1;
 683 }
 684
 685 static struct backlight_device *sony_backlight_device;
 686 static struct backlight_ops sony_backlight_ops = {
 687         .update_status = sony_backlight_update_status,
 688         .get_brightness = sony_backlight_get_brightness,
 689 };
 690
 691 /*
 692  * ACPI callbacks
 693  */
 694 static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
 695 {
 696         dprintk("sony_acpi_notify, event: %d\n", event);
 697         sony_laptop_report_input_event(event);
 698         acpi_bus_generate_event(sony_nc_acpi_device, 1, event);
 699 }
 700
 701 static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
 702                                       void *context, void **return_value)
 703 {
 704         struct acpi_namespace_node *node;
 705         union acpi_operand_object *operand;
 706
 707         node = (struct acpi_namespace_node *)handle;
 708         operand = (union acpi_operand_object *)node->object;
 709
 710         printk(KERN_WARNING DRV_PFX "method: name: %4.4s, args %X\n", node->name.ascii,
 711                (u32) operand->method.param_count);
 712
 713         return AE_OK;
 714 }
 715
 716 /*
 717  * ACPI device
 718  */
 719 static int sony_nc_resume(struct acpi_device *device)
 720 {
 721         struct sony_nc_value *item;
 722
 723         for (item = sony_nc_values; item->name; item++) {
 724                 int ret;
 725
 726                 if (!item->valid)
 727                         continue;
 728                 ret = acpi_callsetfunc(sony_nc_acpi_handle, *item->acpiset,
 729                                        item->value, NULL);
 730                 if (ret < 0) {
 731                         printk("%s: %d\n", __FUNCTION__, ret);
 732                         break;
 733                 }
 734         }
 735         return 0;
 736 }
 737
 738 static int sony_nc_add(struct acpi_device *device)
 739 {
 740         acpi_status status;
 741         int result = 0;
 742         acpi_handle handle;
 743         struct sony_nc_value *item;
 744
 745         printk(KERN_INFO DRV_PFX "%s v%s.\n",
 746                 SONY_NC_DRIVER_NAME, SONY_LAPTOP_DRIVER_VERSION);
 747
 748         sony_nc_acpi_device = device;
 749         strcpy(acpi_device_class(device), "sony/hotkey");
 750
 751         sony_nc_acpi_handle = device->handle;
 752
 753         if (debug) {
 754                 status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_nc_acpi_handle,
 755                                              1, sony_walk_callback, NULL, NULL);
 756                 if (ACPI_FAILURE(status)) {
 757                         printk(KERN_WARNING DRV_PFX "unable to walk acpi resources\n");
 758                         result = -ENODEV;
 759                         goto outwalk;
 760                 }
 761         }
 762
 763         /* setup input devices and helper fifo */
 764         result = sony_laptop_setup_input();
 765         if (result) {
 766                 printk(KERN_ERR DRV_PFX
 767                                 "Unabe to create input devices.\n");
 768                 goto outwalk;
 769         }
 770
 771         status = acpi_install_notify_handler(sony_nc_acpi_handle,
 772                                              ACPI_DEVICE_NOTIFY,
 773                                              sony_acpi_notify, NULL);
 774         if (ACPI_FAILURE(status)) {
 775                 printk(KERN_WARNING DRV_PFX "unable to install notify handler\n");
 776                 result = -ENODEV;
 777                 goto outinput;
 778         }
 779
 780         if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT", &handle))) {
 781                 sony_backlight_device = backlight_device_register("sony", NULL,
 782                                                                   NULL,
 783                                                                   &sony_backlight_ops);
 784
 785                 if (IS_ERR(sony_backlight_device)) {
 786                         printk(KERN_WARNING DRV_PFX "unable to register backlight device\n");
 787                         sony_backlight_device = NULL;
 788                 } else {
 789                         sony_backlight_device->props.brightness =
 790                             sony_backlight_get_brightness
 791                             (sony_backlight_device);
 792                         sony_backlight_device->props.max_brightness =
 793                             SONY_MAX_BRIGHTNESS - 1;
 794                 }
 795
 796         }
 797
 798         result = sony_pf_add();
 799         if (result)
 800                 goto outbacklight;
 801
 802         /* create sony_pf sysfs attributes related to the SNC device */
 803         for (item = sony_nc_values; item->name; ++item) {
 804
 805                 if (!debug && item->debug)
 806                         continue;
 807
 808                 /* find the available acpiget as described in the DSDT */
 809                 for (; item->acpiget && *item->acpiget; ++item->acpiget) {
 810                         if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle,
 811                                                          *item->acpiget,
 812                                                          &handle))) {
 813                                 dprintk("Found %s getter: %s\n",
 814                                                 item->name, *item->acpiget);
 815                                 item->devattr.attr.mode |= S_IRUGO;
 816                                 break;
 817                         }
 818                 }
 819
 820                 /* find the available acpiset as described in the DSDT */
 821                 for (; item->acpiset && *item->acpiset; ++item->acpiset) {
 822                         if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle,
 823                                                          *item->acpiset,
 824                                                          &handle))) {
 825                                 dprintk("Found %s setter: %s\n",
 826                                                 item->name, *item->acpiset);
 827                                 item->devattr.attr.mode |= S_IWUSR;
 828                                 break;
 829                         }
 830                 }
 831
 832                 if (item->devattr.attr.mode != 0) {
 833                         result =
 834                             device_create_file(&sony_pf_device->dev,
 835                                                &item->devattr);
 836                         if (result)
 837                                 goto out_sysfs;
 838                 }
 839         }
 840
 841         return 0;
 842
 843       out_sysfs:
 844         for (item = sony_nc_values; item->name; ++item) {
 845                 device_remove_file(&sony_pf_device->dev, &item->devattr);
 846         }
 847         sony_pf_remove();
 848
 849       outbacklight:
 850         if (sony_backlight_device)
 851                 backlight_device_unregister(sony_backlight_device);
 852
 853         status = acpi_remove_notify_handler(sony_nc_acpi_handle,
 854                                             ACPI_DEVICE_NOTIFY,
 855                                             sony_acpi_notify);
 856         if (ACPI_FAILURE(status))
 857                 printk(KERN_WARNING DRV_PFX "unable to remove notify handler\n");
 858
 859       outinput:
 860         sony_laptop_remove_input();
 861
 862       outwalk:
 863         return result;
 864 }
 865
 866 static int sony_nc_remove(struct acpi_device *device, int type)
 867 {
 868         acpi_status status;
 869         struct sony_nc_value *item;
 870
 871         if (sony_backlight_device)
 872                 backlight_device_unregister(sony_backlight_device);
 873
 874         sony_nc_acpi_device = NULL;
 875
 876         status = acpi_remove_notify_handler(sony_nc_acpi_handle,
 877                                             ACPI_DEVICE_NOTIFY,
 878                                             sony_acpi_notify);
 879         if (ACPI_FAILURE(status))
 880                 printk(KERN_WARNING DRV_PFX "unable to remove notify handler\n");
 881
 882         for (item = sony_nc_values; item->name; ++item) {
 883                 device_remove_file(&sony_pf_device->dev, &item->devattr);
 884         }
 885
 886         sony_pf_remove();
 887         sony_laptop_remove_input();
 888         dprintk(SONY_NC_DRIVER_NAME " removed.\n");
 889
 890         return 0;
 891 }
 892
 893 static struct acpi_driver sony_nc_driver = {
 894         .name = SONY_NC_DRIVER_NAME,
 895         .class = SONY_NC_CLASS,
 896         .ids = SONY_NC_HID,
 897         .owner = THIS_MODULE,
 898         .ops = {
 899                 .add = sony_nc_add,
 900                 .remove = sony_nc_remove,
 901                 .resume = sony_nc_resume,
 902                 },
 903 };
 904
 905 /*********** SPIC (SNY6001) Device ***********/
 906
 907 #define SONYPI_DEVICE_TYPE1     0x00000001
 908 #define SONYPI_DEVICE_TYPE2     0x00000002
 909 #define SONYPI_DEVICE_TYPE3     0x00000004
 910
 911 #define SONY_PIC_EV_MASK        0xff
 912
 913 struct sony_pic_ioport {
 914         struct acpi_resource_io io;
 915         struct list_head        list;
 916 };
 917
 918 struct sony_pic_irq {
 919         struct acpi_resource_irq        irq;
 920         struct list_head                list;
 921 };
 922
 923 struct sony_pic_dev {
 924         int                     model;
 925         u8                      camera_power;
 926         u8                      bluetooth_power;
 927         u8                      wwan_power;
 928         struct acpi_device      *acpi_dev;
 929         struct sony_pic_irq     *cur_irq;
 930         struct sony_pic_ioport  *cur_ioport;
 931         struct list_head        interrupts;
 932         struct list_head        ioports;
 933         struct mutex            lock;
 934 };
 935
 936 static struct sony_pic_dev spic_dev = {
 937         .interrupts     = LIST_HEAD_INIT(spic_dev.interrupts),
 938         .ioports        = LIST_HEAD_INIT(spic_dev.ioports),
 939 };
 940
 941 /* Event masks */
 942 #define SONYPI_JOGGER_MASK                      0x00000001
 943 #define SONYPI_CAPTURE_MASK                     0x00000002
 944 #define SONYPI_FNKEY_MASK                       0x00000004
 945 #define SONYPI_BLUETOOTH_MASK                   0x00000008
 946 #define SONYPI_PKEY_MASK                        0x00000010
 947 #define SONYPI_BACK_MASK                        0x00000020
 948 #define SONYPI_HELP_MASK                        0x00000040
 949 #define SONYPI_LID_MASK                         0x00000080
 950 #define SONYPI_ZOOM_MASK                        0x00000100
 951 #define SONYPI_THUMBPHRASE_MASK                 0x00000200
 952 #define SONYPI_MEYE_MASK                        0x00000400
 953 #define SONYPI_MEMORYSTICK_MASK                 0x00000800
 954 #define SONYPI_BATTERY_MASK                     0x00001000
 955 #define SONYPI_WIRELESS_MASK                    0x00002000
 956
 957 struct sonypi_event {
 958         u8      data;
 959         u8      event;
 960 };
 961
 962 /* The set of possible button release events */
 963 static struct sonypi_event sonypi_releaseev[] = {
 964         { 0x00, SONYPI_EVENT_ANYBUTTON_RELEASED },
 965         { 0, 0 }
 966 };
 967
 968 /* The set of possible jogger events  */
 969 static struct sonypi_event sonypi_joggerev[] = {
 970         { 0x1f, SONYPI_EVENT_JOGDIAL_UP },
 971         { 0x01, SONYPI_EVENT_JOGDIAL_DOWN },
 972         { 0x5f, SONYPI_EVENT_JOGDIAL_UP_PRESSED },
 973         { 0x41, SONYPI_EVENT_JOGDIAL_DOWN_PRESSED },
 974         { 0x1e, SONYPI_EVENT_JOGDIAL_FAST_UP },
 975         { 0x02, SONYPI_EVENT_JOGDIAL_FAST_DOWN },
 976         { 0x5e, SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED },
 977         { 0x42, SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED },
 978         { 0x1d, SONYPI_EVENT_JOGDIAL_VFAST_UP },
 979         { 0x03, SONYPI_EVENT_JOGDIAL_VFAST_DOWN },
 980         { 0x5d, SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED },
 981         { 0x43, SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED },
 982         { 0x40, SONYPI_EVENT_JOGDIAL_PRESSED },
 983         { 0, 0 }
 984 };
 985
 986 /* The set of possible capture button events */
 987 static struct sonypi_event sonypi_captureev[] = {
 988         { 0x05, SONYPI_EVENT_CAPTURE_PARTIALPRESSED },
 989         { 0x07, SONYPI_EVENT_CAPTURE_PRESSED },
 990         { 0x01, SONYPI_EVENT_CAPTURE_PARTIALRELEASED },
 991         { 0, 0 }
 992 };
 993
 994 /* The set of possible fnkeys events */
 995 static struct sonypi_event sonypi_fnkeyev[] = {
 996         { 0x10, SONYPI_EVENT_FNKEY_ESC },
 997         { 0x11, SONYPI_EVENT_FNKEY_F1 },
 998         { 0x12, SONYPI_EVENT_FNKEY_F2 },
 999         { 0x13, SONYPI_EVENT_FNKEY_F3 },
1000         { 0x14, SONYPI_EVENT_FNKEY_F4 },
1001         { 0x15, SONYPI_EVENT_FNKEY_F5 },
1002         { 0x16, SONYPI_EVENT_FNKEY_F6 },
1003         { 0x17, SONYPI_EVENT_FNKEY_F7 },
1004         { 0x18, SONYPI_EVENT_FNKEY_F8 },
1005         { 0x19, SONYPI_EVENT_FNKEY_F9 },
1006         { 0x1a, SONYPI_EVENT_FNKEY_F10 },
1007         { 0x1b, SONYPI_EVENT_FNKEY_F11 },
1008         { 0x1c, SONYPI_EVENT_FNKEY_F12 },
1009         { 0x1f, SONYPI_EVENT_FNKEY_RELEASED },
1010         { 0x21, SONYPI_EVENT_FNKEY_1 },
1011         { 0x22, SONYPI_EVENT_FNKEY_2 },
1012         { 0x31, SONYPI_EVENT_FNKEY_D },
1013         { 0x32, SONYPI_EVENT_FNKEY_E },
1014         { 0x33, SONYPI_EVENT_FNKEY_F },
1015         { 0x34, SONYPI_EVENT_FNKEY_S },
1016         { 0x35, SONYPI_EVENT_FNKEY_B },
1017         { 0x36, SONYPI_EVENT_FNKEY_ONLY },
1018         { 0, 0 }
1019 };
1020
1021 /* The set of possible program key events */
1022 static struct sonypi_event sonypi_pkeyev[] = {
1023         { 0x01, SONYPI_EVENT_PKEY_P1 },
1024         { 0x02, SONYPI_EVENT_PKEY_P2 },
1025         { 0x04, SONYPI_EVENT_PKEY_P3 },
1026         { 0x5c, SONYPI_EVENT_PKEY_P1 },
1027         { 0, 0 }
1028 };
1029
1030 /* The set of possible bluetooth events */
1031 static struct sonypi_event sonypi_blueev[] = {
1032         { 0x55, SONYPI_EVENT_BLUETOOTH_PRESSED },
1033         { 0x59, SONYPI_EVENT_BLUETOOTH_ON },
1034         { 0x5a, SONYPI_EVENT_BLUETOOTH_OFF },
1035         { 0, 0 }
1036 };
1037
1038 /* The set of possible wireless events */
1039 static struct sonypi_event sonypi_wlessev[] = {
1040         { 0x59, SONYPI_EVENT_WIRELESS_ON },
1041         { 0x5a, SONYPI_EVENT_WIRELESS_OFF },
1042         { 0, 0 }
1043 };
1044
1045 /* The set of possible back button events */
1046 static struct sonypi_event sonypi_backev[] = {
1047         { 0x20, SONYPI_EVENT_BACK_PRESSED },
1048         { 0, 0 }
1049 };
1050
1051 /* The set of possible help button events */
1052 static struct sonypi_event sonypi_helpev[] = {
1053         { 0x3b, SONYPI_EVENT_HELP_PRESSED },
1054         { 0, 0 }
1055 };
1056
1057
1058 /* The set of possible lid events */
1059 static struct sonypi_event sonypi_lidev[] = {
1060         { 0x51, SONYPI_EVENT_LID_CLOSED },
1061         { 0x50, SONYPI_EVENT_LID_OPENED },
1062         { 0, 0 }
1063 };
1064
1065 /* The set of possible zoom events */
1066 static struct sonypi_event sonypi_zoomev[] = {
1067         { 0x39, SONYPI_EVENT_ZOOM_PRESSED },
1068         { 0, 0 }
1069 };
1070
1071 /* The set of possible thumbphrase events */
1072 static struct sonypi_event sonypi_thumbphraseev[] = {
1073         { 0x3a, SONYPI_EVENT_THUMBPHRASE_PRESSED },
1074         { 0, 0 }
1075 };
1076
1077 /* The set of possible motioneye camera events */
1078 static struct sonypi_event sonypi_meyeev[] = {
1079         { 0x00, SONYPI_EVENT_MEYE_FACE },
1080         { 0x01, SONYPI_EVENT_MEYE_OPPOSITE },
1081         { 0, 0 }
1082 };
1083
1084 /* The set of possible memorystick events */
1085 static struct sonypi_event sonypi_memorystickev[] = {
1086         { 0x53, SONYPI_EVENT_MEMORYSTICK_INSERT },
1087         { 0x54, SONYPI_EVENT_MEMORYSTICK_EJECT },
1088         { 0, 0 }
1089 };
1090
1091 /* The set of possible battery events */
1092 static struct sonypi_event sonypi_batteryev[] = {
1093         { 0x20, SONYPI_EVENT_BATTERY_INSERT },
1094         { 0x30, SONYPI_EVENT_BATTERY_REMOVE },
1095         { 0, 0 }
1096 };
1097
1098 static struct sonypi_eventtypes {
1099         int                     model;
1100         u8                      data;
1101         unsigned long           mask;
1102         struct sonypi_event *   events;
1103 } sony_pic_eventtypes[] = {
1104         { SONYPI_DEVICE_TYPE1, 0, 0xffffffff, sonypi_releaseev },
1105         { SONYPI_DEVICE_TYPE1, 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
1106         { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_LID_MASK, sonypi_lidev },
1107         { SONYPI_DEVICE_TYPE1, 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
1108         { SONYPI_DEVICE_TYPE1, 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
1109         { SONYPI_DEVICE_TYPE1, 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
1110         { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
1111         { SONYPI_DEVICE_TYPE1, 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
1112         { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
1113         { SONYPI_DEVICE_TYPE1, 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },
1114
1115         { SONYPI_DEVICE_TYPE2, 0, 0xffffffff, sonypi_releaseev },
1116         { SONYPI_DEVICE_TYPE2, 0x38, SONYPI_LID_MASK, sonypi_lidev },
1117         { SONYPI_DEVICE_TYPE2, 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
1118         { SONYPI_DEVICE_TYPE2, 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
1119         { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
1120         { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
1121         { SONYPI_DEVICE_TYPE2, 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
1122         { SONYPI_DEVICE_TYPE2, 0x11, SONYPI_BACK_MASK, sonypi_backev },
1123         { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_HELP_MASK, sonypi_helpev },
1124         { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
1125         { SONYPI_DEVICE_TYPE2, 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
1126         { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
1127         { SONYPI_DEVICE_TYPE2, 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
1128         { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
1129
1130         { SONYPI_DEVICE_TYPE3, 0, 0xffffffff, sonypi_releaseev },
1131         { SONYPI_DEVICE_TYPE3, 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
1132         { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
1133         { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
1134         { SONYPI_DEVICE_TYPE3, 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
1135         { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
1136         { 0 }
1137 };
1138
1139 static int sony_pic_detect_device_type(void)
1140 {
1141         struct pci_dev *pcidev;
1142         int model = 0;
1143
1144         if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
1145                                      PCI_DEVICE_ID_INTEL_82371AB_3, NULL)))
1146                 model = SONYPI_DEVICE_TYPE1;
1147
1148         else if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
1149                                           PCI_DEVICE_ID_INTEL_ICH6_1, NULL)))
1150                 model = SONYPI_DEVICE_TYPE3;
1151
1152         else if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
1153                                           PCI_DEVICE_ID_INTEL_ICH7_1, NULL)))
1154                 model = SONYPI_DEVICE_TYPE3;
1155
1156         else
1157                 model = SONYPI_DEVICE_TYPE2;
1158
1159         if (pcidev)
1160                 pci_dev_put(pcidev);
1161
1162         printk(KERN_INFO DRV_PFX "detected Type%d model\n",
1163                         model == SONYPI_DEVICE_TYPE1 ? 1 :
1164                         model == SONYPI_DEVICE_TYPE2 ? 2 : 3);
1165         return model;
1166 }
1167
1168 #define ITERATIONS_LONG         10000
1169 #define ITERATIONS_SHORT        10
1170 #define wait_on_command(command, iterations) {                          \
1171         unsigned int n = iterations;                                    \
1172         while (--n && (command))                                        \
1173                 udelay(1);                                              \
1174         if (!n)                                                         \
1175                 dprintk("command failed at %s : %s (line %d)\n",        \
1176                                 __FILE__, __FUNCTION__, __LINE__);      \
1177 }
1178
1179 static u8 sony_pic_call1(u8 dev)
1180 {
1181         u8 v1, v2;
1182
1183         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2,
1184                         ITERATIONS_LONG);
1185         outb(dev, spic_dev.cur_ioport->io.minimum + 4);
1186         v1 = inb_p(spic_dev.cur_ioport->io.minimum + 4);
1187         v2 = inb_p(spic_dev.cur_ioport->io.minimum);
1188         dprintk("sony_pic_call1: 0x%.4x\n", (v2 << 8) | v1);
1189         return v2;
1190 }
1191
1192 static u8 sony_pic_call2(u8 dev, u8 fn)
1193 {
1194         u8 v1;
1195
1196         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2,
1197                         ITERATIONS_LONG);
1198         outb(dev, spic_dev.cur_ioport->io.minimum + 4);
1199         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2,
1200                         ITERATIONS_LONG);
1201         outb(fn, spic_dev.cur_ioport->io.minimum);
1202         v1 = inb_p(spic_dev.cur_ioport->io.minimum);
1203         dprintk("sony_pic_call2: 0x%.4x\n", v1);
1204         return v1;
1205 }
1206
1207 static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
1208 {
1209         u8 v1;
1210
1211         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
1212         outb(dev, spic_dev.cur_ioport->io.minimum + 4);
1213         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
1214         outb(fn, spic_dev.cur_ioport->io.minimum);
1215         wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
1216         outb(v, spic_dev.cur_ioport->io.minimum);
1217         v1 = inb_p(spic_dev.cur_ioport->io.minimum);
1218         dprintk("sony_pic_call3: 0x%.4x\n", v1);
1219         return v1;
1220 }
1221
1222 /* camera tests and poweron/poweroff */
1223 #define SONYPI_CAMERA_PICTURE           5
1224 #define SONYPI_CAMERA_CONTROL           0x10
1225
1226 #define SONYPI_CAMERA_BRIGHTNESS                0
1227 #define SONYPI_CAMERA_CONTRAST                  1
1228 #define SONYPI_CAMERA_HUE                       2
1229 #define SONYPI_CAMERA_COLOR                     3
1230 #define SONYPI_CAMERA_SHARPNESS                 4
1231
1232 #define SONYPI_CAMERA_EXPOSURE_MASK             0xC
1233 #define SONYPI_CAMERA_WHITE_BALANCE_MASK        0x3
1234 #define SONYPI_CAMERA_PICTURE_MODE_MASK         0x30
1235 #define SONYPI_CAMERA_MUTE_MASK                 0x40
1236
1237 /* the rest don't need a loop until not 0xff */
1238 #define SONYPI_CAMERA_AGC                       6
1239 #define SONYPI_CAMERA_AGC_MASK                  0x30
1240 #define SONYPI_CAMERA_SHUTTER_MASK              0x7
1241
1242 #define SONYPI_CAMERA_SHUTDOWN_REQUEST          7
1243 #define SONYPI_CAMERA_CONTROL                   0x10
1244
1245 #define SONYPI_CAMERA_STATUS                    7
1246 #define SONYPI_CAMERA_STATUS_READY              0x2
1247 #define SONYPI_CAMERA_STATUS_POSITION           0x4
1248
1249 #define SONYPI_DIRECTION_BACKWARDS              0x4
1250
1251 #define SONYPI_CAMERA_REVISION                  8
1252 #define SONYPI_CAMERA_ROMVERSION                9
1253
1254 static int __sony_pic_camera_ready(void)
1255 {
1256         u8 v;
1257
1258         v = sony_pic_call2(0x8f, SONYPI_CAMERA_STATUS);
1259         return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
1260 }
1261
1262 static int __sony_pic_camera_off(void)
1263 {
1264         if (!camera) {
1265                 printk(KERN_WARNING DRV_PFX "camera control not enabled\n");
1266                 return -ENODEV;
1267         }
1268
1269         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
1270                                 SONYPI_CAMERA_MUTE_MASK),
1271                         ITERATIONS_SHORT);
1272
1273         if (spic_dev.camera_power) {
1274                 sony_pic_call2(0x91, 0);
1275                 spic_dev.camera_power = 0;
1276         }
1277         return 0;
1278 }
1279
1280 static int __sony_pic_camera_on(void)
1281 {
1282         int i, j, x;
1283
1284         if (!camera) {
1285                 printk(KERN_WARNING DRV_PFX "camera control not enabled\n");
1286                 return -ENODEV;
1287         }
1288
1289         if (spic_dev.camera_power)
1290                 return 0;
1291
1292         for (j = 5; j > 0; j--) {
1293
1294                 for (x = 0; x < 100 && sony_pic_call2(0x91, 0x1); x++)
1295                         msleep(10);
1296                 sony_pic_call1(0x93);
1297
1298                 for (i = 400; i > 0; i--) {
1299                         if (__sony_pic_camera_ready())
1300                                 break;
1301                         msleep(10);
1302                 }
1303                 if (i)
1304                         break;
1305         }
1306
1307         if (j == 0) {
1308                 printk(KERN_WARNING DRV_PFX "failed to power on camera\n");
1309                 return -ENODEV;
1310         }
1311
1312         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTROL,
1313                                 0x5a),
1314                         ITERATIONS_SHORT);
1315
1316         spic_dev.camera_power = 1;
1317         return 0;
1318 }
1319
1320 /* External camera command (exported to the motion eye v4l driver) */
1321 int sony_pic_camera_command(int command, u8 value)
1322 {
1323         if (!camera)
1324                 return -EIO;
1325
1326         mutex_lock(&spic_dev.lock);
1327
1328         switch (command) {
1329         case SONY_PIC_COMMAND_SETCAMERA:
1330                 if (value)
1331                         __sony_pic_camera_on();
1332                 else
1333                         __sony_pic_camera_off();
1334                 break;
1335         case SONY_PIC_COMMAND_SETCAMERABRIGHTNESS:
1336                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_BRIGHTNESS, value),
1337                                 ITERATIONS_SHORT);
1338                 break;
1339         case SONY_PIC_COMMAND_SETCAMERACONTRAST:
1340                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTRAST, value),
1341                                 ITERATIONS_SHORT);
1342                 break;
1343         case SONY_PIC_COMMAND_SETCAMERAHUE:
1344                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_HUE, value),
1345                                 ITERATIONS_SHORT);
1346                 break;
1347         case SONY_PIC_COMMAND_SETCAMERACOLOR:
1348                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_COLOR, value),
1349                                 ITERATIONS_SHORT);
1350                 break;
1351         case SONY_PIC_COMMAND_SETCAMERASHARPNESS:
1352                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_SHARPNESS, value),
1353                                 ITERATIONS_SHORT);
1354                 break;
1355         case SONY_PIC_COMMAND_SETCAMERAPICTURE:
1356                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE, value),
1357                                 ITERATIONS_SHORT);
1358                 break;
1359         case SONY_PIC_COMMAND_SETCAMERAAGC:
1360                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_AGC, value),
1361                                 ITERATIONS_SHORT);
1362                 break;
1363         default:
1364                 printk(KERN_ERR DRV_PFX "sony_pic_camera_command invalid: %d\n",
1365                        command);
1366                 break;
1367         }
1368         mutex_unlock(&spic_dev.lock);
1369         return 0;
1370 }
1371 EXPORT_SYMBOL(sony_pic_camera_command);
1372
1373 /* gprs/edge modem (SZ460N and SZ210P), thanks to Joshua Wise */
1374 static void sony_pic_set_wwanpower(u8 state)
1375 {
1376         state = !!state;
1377         mutex_lock(&spic_dev.lock);
1378         if (spic_dev.wwan_power == state) {
1379                 mutex_unlock(&spic_dev.lock);
1380                 return;
1381         }
1382         sony_pic_call2(0xB0, state);
1383         spic_dev.wwan_power = state;
1384         mutex_unlock(&spic_dev.lock);
1385 }
1386
1387 static ssize_t sony_pic_wwanpower_store(struct device *dev,
1388                 struct device_attribute *attr,
1389                 const char *buffer, size_t count)
1390 {
1391         unsigned long value;
1392         if (count > 31)
1393                 return -EINVAL;
1394
1395         value = simple_strtoul(buffer, NULL, 10);
1396         sony_pic_set_wwanpower(value);
1397
1398         return count;
1399 }
1400
1401 static ssize_t sony_pic_wwanpower_show(struct device *dev,
1402                 struct device_attribute *attr, char *buffer)
1403 {
1404         ssize_t count;
1405         mutex_lock(&spic_dev.lock);
1406         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.wwan_power);
1407         mutex_unlock(&spic_dev.lock);
1408         return count;
1409 }
1410
1411 /* bluetooth subsystem power state */
1412 static void __sony_pic_set_bluetoothpower(u8 state)
1413 {
1414         state = !!state;
1415         if (spic_dev.bluetooth_power == state)
1416                 return;
1417         sony_pic_call2(0x96, state);
1418         sony_pic_call1(0x82);
1419         spic_dev.bluetooth_power = state;
1420 }
1421
1422 static ssize_t sony_pic_bluetoothpower_store(struct device *dev,
1423                 struct device_attribute *attr,
1424                 const char *buffer, size_t count)
1425 {
1426         unsigned long value;
1427         if (count > 31)
1428                 return -EINVAL;
1429
1430         value = simple_strtoul(buffer, NULL, 10);
1431         mutex_lock(&spic_dev.lock);
1432         __sony_pic_set_bluetoothpower(value);
1433         mutex_unlock(&spic_dev.lock);
1434
1435         return count;
1436 }
1437
1438 static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
1439                 struct device_attribute *attr, char *buffer)
1440 {
1441         ssize_t count = 0;
1442         mutex_lock(&spic_dev.lock);
1443         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.bluetooth_power);
1444         mutex_unlock(&spic_dev.lock);
1445         return count;
1446 }
1447
1448 /* fan speed */
1449 /* FAN0 information (reverse engineered from ACPI tables) */
1450 #define SONY_PIC_FAN0_STATUS    0x93
1451 static int sony_pic_set_fanspeed(unsigned long value)
1452 {
1453         return ec_write(SONY_PIC_FAN0_STATUS, value);
1454 }
1455
1456 static int sony_pic_get_fanspeed(u8 *value)
1457 {
1458         return ec_read(SONY_PIC_FAN0_STATUS, value);
1459 }
1460
1461 static ssize_t sony_pic_fanspeed_store(struct device *dev,
1462                 struct device_attribute *attr,
1463                 const char *buffer, size_t count)
1464 {
1465         unsigned long value;
1466         if (count > 31)
1467                 return -EINVAL;
1468
1469         value = simple_strtoul(buffer, NULL, 10);
1470         if (sony_pic_set_fanspeed(value))
1471                 return -EIO;
1472
1473         return count;
1474 }
1475
1476 static ssize_t sony_pic_fanspeed_show(struct device *dev,
1477                 struct device_attribute *attr, char *buffer)
1478 {
1479         u8 value = 0;
1480         if (sony_pic_get_fanspeed(&value))
1481                 return -EIO;
1482
1483         return snprintf(buffer, PAGE_SIZE, "%d\n", value);
1484 }
1485
1486 #define SPIC_ATTR(_name, _mode)                                 \
1487 struct device_attribute spic_attr_##_name = __ATTR(_name,       \
1488                 _mode, sony_pic_## _name ##_show,               \
1489                 sony_pic_## _name ##_store)
1490
1491 static SPIC_ATTR(bluetoothpower, 0644);
1492 static SPIC_ATTR(wwanpower, 0644);
1493 static SPIC_ATTR(fanspeed, 0644);
1494
1495 static struct attribute *spic_attributes[] = {
1496         &spic_attr_bluetoothpower.attr,
1497         &spic_attr_wwanpower.attr,
1498         &spic_attr_fanspeed.attr,
1499         NULL
1500 };
1501
1502 static struct attribute_group spic_attribute_group = {
1503         .attrs = spic_attributes
1504 };
1505
1506 /******** SONYPI compatibility **********/
1507 #ifdef CONFIG_SONYPI_COMPAT
1508
1509 /* battery / brightness / temperature  addresses */
1510 #define SONYPI_BAT_FLAGS        0x81
1511 #define SONYPI_LCD_LIGHT        0x96
1512 #define SONYPI_BAT1_PCTRM       0xa0
1513 #define SONYPI_BAT1_LEFT        0xa2
1514 #define SONYPI_BAT1_MAXRT       0xa4
1515 #define SONYPI_BAT2_PCTRM       0xa8
1516 #define SONYPI_BAT2_LEFT        0xaa
1517 #define SONYPI_BAT2_MAXRT       0xac
1518 #define SONYPI_BAT1_MAXTK       0xb0
1519 #define SONYPI_BAT1_FULL        0xb2
1520 #define SONYPI_BAT2_MAXTK       0xb8
1521 #define SONYPI_BAT2_FULL        0xba
1522 #define SONYPI_TEMP_STATUS      0xC1
1523
1524 struct sonypi_compat_s {
1525         struct fasync_struct    *fifo_async;
1526         struct kfifo            *fifo;
1527         spinlock_t              fifo_lock;
1528         wait_queue_head_t       fifo_proc_list;
1529         atomic_t                open_count;
1530 };
1531 static struct sonypi_compat_s sonypi_compat = {
1532         .open_count = ATOMIC_INIT(0),
1533 };
1534
1535 static int sonypi_misc_fasync(int fd, struct file *filp, int on)
1536 {
1537         int retval;
1538
1539         retval = fasync_helper(fd, filp, on, &sonypi_compat.fifo_async);
1540         if (retval < 0)
1541                 return retval;
1542         return 0;
1543 }
1544
1545 static int sonypi_misc_release(struct inode *inode, struct file *file)
1546 {
1547         sonypi_misc_fasync(-1, file, 0);
1548         atomic_dec(&sonypi_compat.open_count);
1549         return 0;
1550 }
1551
1552 static int sonypi_misc_open(struct inode *inode, struct file *file)
1553 {
1554         /* Flush input queue on first open */
1555         if (atomic_inc_return(&sonypi_compat.open_count) == 1)
1556                 kfifo_reset(sonypi_compat.fifo);
1557         return 0;
1558 }
1559
1560 static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
1561                                 size_t count, loff_t *pos)
1562 {
1563         ssize_t ret;
1564         unsigned char c;
1565
1566         if ((kfifo_len(sonypi_compat.fifo) == 0) &&
1567             (file->f_flags & O_NONBLOCK))
1568                 return -EAGAIN;
1569
1570         ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
1571                                        kfifo_len(sonypi_compat.fifo) != 0);
1572         if (ret)
1573                 return ret;
1574
1575         while (ret < count &&
1576                (kfifo_get(sonypi_compat.fifo, &c, sizeof(c)) == sizeof(c))) {
1577                 if (put_user(c, buf++))
1578                         return -EFAULT;
1579                 ret++;
1580         }
1581
1582         if (ret > 0) {
1583                 struct inode *inode = file->f_path.dentry->d_inode;
1584                 inode->i_atime = current_fs_time(inode->i_sb);
1585         }
1586
1587         return ret;
1588 }
1589
1590 static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
1591 {
1592         poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
1593         if (kfifo_len(sonypi_compat.fifo))
1594                 return POLLIN | POLLRDNORM;
1595         return 0;
1596 }
1597
1598 static int ec_read16(u8 addr, u16 *value)
1599 {
1600         u8 val_lb, val_hb;
1601         if (ec_read(addr, &val_lb))
1602                 return -1;
1603         if (ec_read(addr + 1, &val_hb))
1604                 return -1;
1605         *value = val_lb | (val_hb << 8);
1606         return 0;
1607 }
1608
1609 static int sonypi_misc_ioctl(struct inode *ip, struct file *fp,
1610                              unsigned int cmd, unsigned long arg)
1611 {
1612         int ret = 0;
1613         void __user *argp = (void __user *)arg;
1614         u8 val8;
1615         u16 val16;
1616         int value;
1617
1618         mutex_lock(&spic_dev.lock);
1619         switch (cmd) {
1620         case SONYPI_IOCGBRT:
1621                 if (sony_backlight_device == NULL) {
1622                         ret = -EIO;
1623                         break;
1624                 }
1625                 if (acpi_callgetfunc(sony_nc_acpi_handle, "GBRT", &value)) {
1626                         ret = -EIO;
1627                         break;
1628                 }
1629                 val8 = ((value & 0xff) - 1) << 5;
1630                 if (copy_to_user(argp, &val8, sizeof(val8)))
1631                                 ret = -EFAULT;
1632                 break;
1633         case SONYPI_IOCSBRT:
1634                 if (sony_backlight_device == NULL) {
1635                         ret = -EIO;
1636                         break;
1637                 }
1638                 if (copy_from_user(&val8, argp, sizeof(val8))) {
1639                         ret = -EFAULT;
1640                         break;
1641                 }
1642                 if (acpi_callsetfunc(sony_nc_acpi_handle, "SBRT",
1643                                 (val8 >> 5) + 1, NULL)) {
1644                         ret = -EIO;
1645                         break;
1646                 }
1647                 /* sync the backlight device status */
1648                 sony_backlight_device->props.brightness =
1649                     sony_backlight_get_brightness(sony_backlight_device);
1650                 break;
1651         case SONYPI_IOCGBAT1CAP:
1652                 if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
1653                         ret = -EIO;
1654                         break;
1655                 }
1656                 if (copy_to_user(argp, &val16, sizeof(val16)))
1657                         ret = -EFAULT;
1658                 break;
1659         case SONYPI_IOCGBAT1REM:
1660                 if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
1661                         ret = -EIO;
1662                         break;
1663                 }
1664                 if (copy_to_user(argp, &val16, sizeof(val16)))
1665                         ret = -EFAULT;
1666                 break;
1667         case SONYPI_IOCGBAT2CAP:
1668                 if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
1669                         ret = -EIO;
1670                         break;
1671                 }
1672                 if (copy_to_user(argp, &val16, sizeof(val16)))
1673                         ret = -EFAULT;
1674                 break;
1675         case SONYPI_IOCGBAT2REM:
1676                 if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
1677                         ret = -EIO;
1678                         break;
1679                 }
1680                 if (copy_to_user(argp, &val16, sizeof(val16)))
1681                         ret = -EFAULT;
1682                 break;
1683         case SONYPI_IOCGBATFLAGS:
1684                 if (ec_read(SONYPI_BAT_FLAGS, &val8)) {
1685                         ret = -EIO;
1686                         break;
1687                 }
1688                 val8 &= 0x07;
1689                 if (copy_to_user(argp, &val8, sizeof(val8)))
1690                         ret = -EFAULT;
1691                 break;
1692         case SONYPI_IOCGBLUE:
1693                 val8 = spic_dev.bluetooth_power;
1694                 if (copy_to_user(argp, &val8, sizeof(val8)))
1695                         ret = -EFAULT;
1696                 break;
1697         case SONYPI_IOCSBLUE:
1698                 if (copy_from_user(&val8, argp, sizeof(val8))) {
1699                         ret = -EFAULT;
1700                         break;
1701                 }
1702                 __sony_pic_set_bluetoothpower(val8);
1703                 break;
1704         /* FAN Controls */
1705         case SONYPI_IOCGFAN:
1706                 if (sony_pic_get_fanspeed(&val8)) {
1707                         ret = -EIO;
1708                         break;
1709                 }
1710                 if (copy_to_user(argp, &val8, sizeof(val8)))
1711                         ret = -EFAULT;
1712                 break;
1713         case SONYPI_IOCSFAN:
1714                 if (copy_from_user(&val8, argp, sizeof(val8))) {
1715                         ret = -EFAULT;
1716                         break;
1717                 }
1718                 if (sony_pic_set_fanspeed(val8))
1719                         ret = -EIO;
1720                 break;
1721         /* GET Temperature (useful under APM) */
1722         case SONYPI_IOCGTEMP:
1723                 if (ec_read(SONYPI_TEMP_STATUS, &val8)) {
1724                         ret = -EIO;
1725                         break;
1726                 }
1727                 if (copy_to_user(argp, &val8, sizeof(val8)))
1728                         ret = -EFAULT;
1729                 break;
1730         default:
1731                 ret = -EINVAL;
1732         }
1733         mutex_unlock(&spic_dev.lock);
1734         return ret;
1735 }
1736
1737 static const struct file_operations sonypi_misc_fops = {
1738         .owner          = THIS_MODULE,
1739         .read           = sonypi_misc_read,
1740         .poll           = sonypi_misc_poll,
1741         .open           = sonypi_misc_open,
1742         .release        = sonypi_misc_release,
1743         .fasync         = sonypi_misc_fasync,
1744         .ioctl          = sonypi_misc_ioctl,
1745 };
1746
1747 static struct miscdevice sonypi_misc_device = {
1748         .minor          = MISC_DYNAMIC_MINOR,
1749         .name           = "sonypi",
1750         .fops           = &sonypi_misc_fops,
1751 };
1752
1753 static void sonypi_compat_report_event(u8 event)
1754 {
1755         kfifo_put(sonypi_compat.fifo, (unsigned char *)&event, sizeof(event));
1756         kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
1757         wake_up_interruptible(&sonypi_compat.fifo_proc_list);
1758 }
1759
1760 static int sonypi_compat_init(void)
1761 {
1762         int error;
1763
1764         spin_lock_init(&sonypi_compat.fifo_lock);
1765         sonypi_compat.fifo = kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
1766                                          &sonypi_compat.fifo_lock);
1767         if (IS_ERR(sonypi_compat.fifo)) {
1768                 printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
1769                 return PTR_ERR(sonypi_compat.fifo);
1770         }
1771
1772         init_waitqueue_head(&sonypi_compat.fifo_proc_list);
1773
1774         if (minor != -1)
1775                 sonypi_misc_device.minor = minor;
1776         error = misc_register(&sonypi_misc_device);
1777         if (error) {
1778                 printk(KERN_ERR DRV_PFX "misc_register failed\n");
1779                 goto err_free_kfifo;
1780         }
1781         if (minor == -1)
1782                 printk(KERN_INFO DRV_PFX "device allocated minor is %d\n",
1783                        sonypi_misc_device.minor);
1784
1785         return 0;
1786
1787 err_free_kfifo:
1788         kfifo_free(sonypi_compat.fifo);
1789         return error;
1790 }
1791
1792 static void sonypi_compat_exit(void)
1793 {
1794         misc_deregister(&sonypi_misc_device);
1795         kfifo_free(sonypi_compat.fifo);
1796 }
1797 #else
1798 static int sonypi_compat_init(void) { return 0; }
1799 static void sonypi_compat_exit(void) { }
1800 static void sonypi_compat_report_event(u8 event) { }
1801 #endif /* CONFIG_SONYPI_COMPAT */
1802
1803 /*
1804  * ACPI callbacks
1805  */
1806 static acpi_status
1807 sony_pic_read_possible_resource(struct acpi_resource *resource, void *context)
1808 {
1809         u32 i;
1810         struct sony_pic_dev *dev = (struct sony_pic_dev *)context;
1811
1812         switch (resource->type) {
1813         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
1814         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
1815                 return AE_OK;
1816
1817         case ACPI_RESOURCE_TYPE_IRQ:
1818                 {
1819                         struct acpi_resource_irq *p = &resource->data.irq;
1820                         struct sony_pic_irq *interrupt = NULL;
1821                         if (!p || !p->interrupt_count) {
1822                                 /*
1823                                  * IRQ descriptors may have no IRQ# bits set,
1824                                  * particularly those those w/ _STA disabled
1825                                  */
1826                                 dprintk("Blank IRQ resource\n");
1827                                 return AE_OK;
1828                         }
1829                         for (i = 0; i < p->interrupt_count; i++) {
1830                                 if (!p->interrupts[i]) {
1831                                         printk(KERN_WARNING DRV_PFX
1832                                                         "Invalid IRQ %d\n",
1833                                                         p->interrupts[i]);
1834                                         continue;
1835                                 }
1836                                 interrupt = kzalloc(sizeof(*interrupt),
1837                                                 GFP_KERNEL);
1838                                 if (!interrupt)
1839                                         return AE_ERROR;
1840
1841                                 list_add_tail(&interrupt->list, &dev->interrupts);
1842                                 interrupt->irq.triggering = p->triggering;
1843                                 interrupt->irq.polarity = p->polarity;
1844                                 interrupt->irq.sharable = p->sharable;
1845                                 interrupt->irq.interrupt_count = 1;
1846                                 interrupt->irq.interrupts[0] = p->interrupts[i];
1847                         }
1848                         return AE_OK;
1849                 }
1850         case ACPI_RESOURCE_TYPE_IO:
1851                 {
1852                         struct acpi_resource_io *io = &resource->data.io;
1853                         struct sony_pic_ioport *ioport = NULL;
1854                         if (!io) {
1855                                 dprintk("Blank IO resource\n");
1856                                 return AE_OK;
1857                         }
1858
1859                         ioport = kzalloc(sizeof(*ioport), GFP_KERNEL);
1860                         if (!ioport)
1861                                 return AE_ERROR;
1862
1863                         list_add_tail(&ioport->list, &dev->ioports);
1864                         memcpy(&ioport->io, io, sizeof(*io));
1865                         return AE_OK;
1866                 }
1867         default:
1868                 dprintk("Resource %d isn't an IRQ nor an IO port\n",
1869                                 resource->type);
1870
1871         case ACPI_RESOURCE_TYPE_END_TAG:
1872                 return AE_OK;
1873         }
1874         return AE_CTRL_TERMINATE;
1875 }
1876
1877 static int sony_pic_possible_resources(struct acpi_device *device)
1878 {
1879         int result = 0;
1880         acpi_status status = AE_OK;
1881
1882         if (!device)
1883                 return -EINVAL;
1884
1885         /* get device status */
1886         /* see acpi_pci_link_get_current acpi_pci_link_get_possible */
1887         dprintk("Evaluating _STA\n");
1888         result = acpi_bus_get_status(device);
1889         if (result) {
1890                 printk(KERN_WARNING DRV_PFX "Unable to read status\n");
1891                 goto end;
1892         }
1893
1894         if (!device->status.enabled)
1895                 dprintk("Device disabled\n");
1896         else
1897                 dprintk("Device enabled\n");
1898
1899         /*
1900          * Query and parse 'method'
1901          */
1902         dprintk("Evaluating %s\n", METHOD_NAME__PRS);
1903         status = acpi_walk_resources(device->handle, METHOD_NAME__PRS,
1904                         sony_pic_read_possible_resource, &spic_dev);
1905         if (ACPI_FAILURE(status)) {
1906                 printk(KERN_WARNING DRV_PFX
1907                                 "Failure evaluating %s\n",
1908                                 METHOD_NAME__PRS);
1909                 result = -ENODEV;
1910         }
1911 end:
1912         return result;
1913 }
1914
1915 /*
1916  *  Disable the spic device by calling its _DIS method
1917  */
1918 static int sony_pic_disable(struct acpi_device *device)
1919 {
1920         if (ACPI_FAILURE(acpi_evaluate_object(device->handle,
1921                         "_DIS", NULL, NULL)))
1922                 return -ENXIO;
1923
1924         dprintk("Device disabled\n");
1925         return 0;
1926 }
1927
1928
1929 /*
1930  *  Based on drivers/acpi/pci_link.c:acpi_pci_link_set
1931  *
1932  *  Call _SRS to set current resources
1933  */
1934 static int sony_pic_enable(struct acpi_device *device,
1935                 struct sony_pic_ioport *ioport, struct sony_pic_irq *irq)
1936 {
1937         acpi_status status;
1938         int result = 0;
1939         struct {
1940                 struct acpi_resource io_res;
1941                 struct acpi_resource irq_res;
1942                 struct acpi_resource end;
1943         } *resource;
1944         struct acpi_buffer buffer = { 0, NULL };
1945
1946         if (!ioport || !irq)
1947                 return -EINVAL;
1948
1949         /* init acpi_buffer */
1950         resource = kzalloc(sizeof(*resource) + 1, GFP_KERNEL);
1951         if (!resource)
1952                 return -ENOMEM;
1953
1954         buffer.length = sizeof(*resource) + 1;
1955         buffer.pointer = resource;
1956
1957         /* setup io resource */
1958         resource->io_res.type = ACPI_RESOURCE_TYPE_IO;
1959         resource->io_res.length = sizeof(struct acpi_resource);
1960         memcpy(&resource->io_res.data.io, &ioport->io,
1961                         sizeof(struct acpi_resource_io));
1962
1963         /* setup irq resource */
1964         resource->irq_res.type = ACPI_RESOURCE_TYPE_IRQ;
1965         resource->irq_res.length = sizeof(struct acpi_resource);
1966         memcpy(&resource->irq_res.data.irq, &irq->irq,
1967                         sizeof(struct acpi_resource_irq));
1968         /* we requested a shared irq */
1969         resource->irq_res.data.irq.sharable = ACPI_SHARED;
1970
1971         resource->end.type = ACPI_RESOURCE_TYPE_END_TAG;
1972
1973         /* Attempt to set the resource */
1974         dprintk("Evaluating _SRS\n");
1975         status = acpi_set_current_resources(device->handle, &buffer);
1976
1977         /* check for total failure */
1978         if (ACPI_FAILURE(status)) {
1979                 printk(KERN_ERR DRV_PFX "Error evaluating _SRS");
1980                 result = -ENODEV;
1981                 goto end;
1982         }
1983
1984         /* Necessary device initializations calls (from sonypi) */
1985         sony_pic_call1(0x82);
1986         sony_pic_call2(0x81, 0xff);
1987         sony_pic_call1(compat ? 0x92 : 0x82);
1988
1989 end:
1990         kfree(resource);
1991         return result;
1992 }
1993
1994 /*****************
1995  *
1996  * ISR: some event is available
1997  *
1998  *****************/
1999 static irqreturn_t sony_pic_irq(int irq, void *dev_id)
2000 {
2001         int i, j;
2002         u32 port_val = 0;
2003         u8 ev = 0;
2004         u8 data_mask = 0;
2005         u8 device_event = 0;
2006
2007         struct sony_pic_dev *dev = (struct sony_pic_dev *) dev_id;
2008
2009         acpi_os_read_port(dev->cur_ioport->io.minimum, &port_val,
2010                         dev->cur_ioport->io.address_length);
2011         ev = port_val & SONY_PIC_EV_MASK;
2012         data_mask = 0xff & (port_val >> (dev->cur_ioport->io.address_length - 8));
2013
2014         dprintk("event (0x%.8x [%.2x] [%.2x]) at port 0x%.4x\n",
2015                         port_val, ev, data_mask, dev->cur_ioport->io.minimum);
2016
2017         if (ev == 0x00 || ev == 0xff)
2018                 return IRQ_HANDLED;
2019
2020         for (i = 0; sony_pic_eventtypes[i].model; i++) {
2021
2022                 if (spic_dev.model != sony_pic_eventtypes[i].model)
2023                         continue;
2024
2025                 if ((data_mask & sony_pic_eventtypes[i].data) !=
2026                     sony_pic_eventtypes[i].data)
2027                         continue;
2028
2029                 if (!(mask & sony_pic_eventtypes[i].mask))
2030                         continue;
2031
2032                 for (j = 0; sony_pic_eventtypes[i].events[j].event; j++) {
2033                         if (ev == sony_pic_eventtypes[i].events[j].data) {
2034                                 device_event =
2035                                         sony_pic_eventtypes[i].events[j].event;
2036                                 goto found;
2037                         }
2038                 }
2039         }
2040         return IRQ_HANDLED;
2041
2042 found:
2043         sony_laptop_report_input_event(device_event);
2044         acpi_bus_generate_event(spic_dev.acpi_dev, 1, device_event);
2045         sonypi_compat_report_event(device_event);
2046
2047         return IRQ_HANDLED;
2048 }
2049
2050 /*****************
2051  *
2052  *  ACPI driver
2053  *
2054  *****************/
2055 static int sony_pic_remove(struct acpi_device *device, int type)
2056 {
2057         struct sony_pic_ioport *io, *tmp_io;
2058         struct sony_pic_irq *irq, *tmp_irq;
2059
2060         sonypi_compat_exit();
2061
2062         if (sony_pic_disable(device)) {
2063                 printk(KERN_ERR DRV_PFX "Couldn't disable device.\n");
2064                 return -ENXIO;
2065         }
2066
2067         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
2068         release_region(spic_dev.cur_ioport->io.minimum,
2069                         spic_dev.cur_ioport->io.address_length);
2070
2071         sony_laptop_remove_input();
2072
2073         /* pf attrs */
2074         sysfs_remove_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
2075         sony_pf_remove();
2076
2077         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
2078                 list_del(&io->list);
2079                 kfree(io);
2080         }
2081         list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
2082                 list_del(&irq->list);
2083                 kfree(irq);
2084         }
2085         spic_dev.cur_ioport = NULL;
2086         spic_dev.cur_irq = NULL;
2087
2088         dprintk(SONY_PIC_DRIVER_NAME " removed.\n");
2089         return 0;
2090 }
2091
2092 static int sony_pic_add(struct acpi_device *device)
2093 {
2094         int result;
2095         struct sony_pic_ioport *io, *tmp_io;
2096         struct sony_pic_irq *irq, *tmp_irq;
2097
2098         printk(KERN_INFO DRV_PFX "%s v%s.\n",
2099                 SONY_PIC_DRIVER_NAME, SONY_LAPTOP_DRIVER_VERSION);
2100
2101         spic_dev.acpi_dev = device;
2102         strcpy(acpi_device_class(device), "sony/hotkey");
2103         spic_dev.model = sony_pic_detect_device_type();
2104         mutex_init(&spic_dev.lock);
2105
2106         /* read _PRS resources */
2107         result = sony_pic_possible_resources(device);
2108         if (result) {
2109                 printk(KERN_ERR DRV_PFX
2110                                 "Unabe to read possible resources.\n");
2111                 goto err_free_resources;
2112         }
2113
2114         /* setup input devices and helper fifo */
2115         result = sony_laptop_setup_input();
2116         if (result) {
2117                 printk(KERN_ERR DRV_PFX
2118                                 "Unabe to create input devices.\n");
2119                 goto err_free_resources;
2120         }
2121
2122         /* request io port */
2123         list_for_each_entry(io, &spic_dev.ioports, list) {
2124                 if (request_region(io->io.minimum, io->io.address_length,
2125                                         "Sony Programable I/O Device")) {
2126                         dprintk("I/O port: 0x%.4x (0x%.4x) + 0x%.2x\n",
2127                                         io->io.minimum, io->io.maximum,
2128                                         io->io.address_length);
2129                         spic_dev.cur_ioport = io;
2130                         break;
2131                 }
2132         }
2133         if (!spic_dev.cur_ioport) {
2134                 printk(KERN_ERR DRV_PFX "Failed to request_region.\n");
2135                 result = -ENODEV;
2136                 goto err_remove_input;
2137         }
2138
2139         /* request IRQ */
2140         list_for_each_entry(irq, &spic_dev.interrupts, list) {
2141                 if (!request_irq(irq->irq.interrupts[0], sony_pic_irq,
2142                                         IRQF_SHARED, "sony-laptop", &spic_dev)) {
2143                         dprintk("IRQ: %d - triggering: %d - "
2144                                         "polarity: %d - shr: %d\n",
2145                                         irq->irq.interrupts[0],
2146                                         irq->irq.triggering,
2147                                         irq->irq.polarity,
2148                                         irq->irq.sharable);
2149                         spic_dev.cur_irq = irq;
2150                         break;
2151                 }
2152         }
2153         if (!spic_dev.cur_irq) {
2154                 printk(KERN_ERR DRV_PFX "Failed to request_irq.\n");
2155                 result = -ENODEV;
2156                 goto err_release_region;
2157         }
2158
2159         /* set resource status _SRS */
2160         result = sony_pic_enable(device, spic_dev.cur_ioport, spic_dev.cur_irq);
2161         if (result) {
2162                 printk(KERN_ERR DRV_PFX "Couldn't enable device.\n");
2163                 goto err_free_irq;
2164         }
2165
2166         spic_dev.bluetooth_power = -1;
2167         /* create device attributes */
2168         result = sony_pf_add();
2169         if (result)
2170                 goto err_disable_device;
2171
2172         result = sysfs_create_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
2173         if (result)
2174                 goto err_remove_pf;
2175
2176         if (sonypi_compat_init())
2177                 goto err_remove_pf;
2178
2179         return 0;
2180
2181 err_remove_pf:
2182         sony_pf_remove();
2183
2184 err_disable_device:
2185         sony_pic_disable(device);
2186
2187 err_free_irq:
2188         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
2189
2190 err_release_region:
2191         release_region(spic_dev.cur_ioport->io.minimum,
2192                         spic_dev.cur_ioport->io.address_length);
2193
2194 err_remove_input:
2195         sony_laptop_remove_input();
2196
2197 err_free_resources:
2198         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
2199                 list_del(&io->list);
2200                 kfree(io);
2201         }
2202         list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
2203                 list_del(&irq->list);
2204                 kfree(irq);
2205         }
2206         spic_dev.cur_ioport = NULL;
2207         spic_dev.cur_irq = NULL;
2208
2209         return result;
2210 }
2211
2212 static int sony_pic_suspend(struct acpi_device *device, pm_message_t state)
2213 {
2214         if (sony_pic_disable(device))
2215                 return -ENXIO;
2216         return 0;
2217 }
2218
2219 static int sony_pic_resume(struct acpi_device *device)
2220 {
2221         sony_pic_enable(device, spic_dev.cur_ioport, spic_dev.cur_irq);
2222         return 0;
2223 }
2224
2225 static struct acpi_driver sony_pic_driver = {
2226         .name = SONY_PIC_DRIVER_NAME,
2227         .class = SONY_PIC_CLASS,
2228         .ids = SONY_PIC_HID,
2229         .owner = THIS_MODULE,
2230         .ops = {
2231                 .add = sony_pic_add,
2232                 .remove = sony_pic_remove,
2233                 .suspend = sony_pic_suspend,
2234                 .resume = sony_pic_resume,
2235                 },
2236 };
2237
2238 static struct dmi_system_id __initdata sonypi_dmi_table[] = {
2239         {
2240                 .ident = "Sony Vaio",
2241                 .matches = {
2242                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
2243                         DMI_MATCH(DMI_PRODUCT_NAME, "PCG-"),
2244                 },
2245         },
2246         {
2247                 .ident = "Sony Vaio",
2248                 .matches = {
2249                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
2250                         DMI_MATCH(DMI_PRODUCT_NAME, "VGN-"),
2251                 },
2252         },
2253         { }
2254 };
2255
2256 static int __init sony_laptop_init(void)
2257 {
2258         int result;
2259
2260         if (!no_spic && dmi_check_system(sonypi_dmi_table)) {
2261                 result = acpi_bus_register_driver(&sony_pic_driver);
2262                 if (result) {
2263                         printk(KERN_ERR DRV_PFX
2264                                         "Unable to register SPIC driver.");
2265                         goto out;
2266                 }
2267         }
2268
2269         result = acpi_bus_register_driver(&sony_nc_driver);
2270         if (result) {
2271                 printk(KERN_ERR DRV_PFX "Unable to register SNC driver.");
2272                 goto out_unregister_pic;
2273         }
2274
2275         return 0;
2276
2277 out_unregister_pic:
2278         if (!no_spic)
2279                 acpi_bus_unregister_driver(&sony_pic_driver);
2280 out:
2281         return result;
2282 }
2283
2284 static void __exit sony_laptop_exit(void)
2285 {
2286         acpi_bus_unregister_driver(&sony_nc_driver);
2287         if (!no_spic)
2288                 acpi_bus_unregister_driver(&sony_pic_driver);
2289 }
2290
2291 module_init(sony_laptop_init);
2292 module_exit(sony_laptop_exit);