drivers/input/keyboard/spitzkbd.c

   1 /*
   2  *  Keyboard driver for Sharp Spitz, Borzoi and Akita (SL-Cxx00 series)
   3  *
   4  *  Copyright (c) 2005 Richard Purdie
   5  *
   6  *  Based on corgikbd.c
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  */
  13
  14 #include <linux/delay.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/init.h>
  17 #include <linux/input.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/jiffies.h>
  20 #include <linux/module.h>
  21 #include <linux/slab.h>
  22
  23 #include <mach/spitz.h>
  24 #include <mach/pxa2xx-gpio.h>
  25
  26 #define KB_ROWS                 7
  27 #define KB_COLS                 11
  28 #define KB_ROWMASK(r)           (1 << (r))
  29 #define SCANCODE(r,c)           (((r)<<4) + (c) + 1)
  30 #define NR_SCANCODES            ((KB_ROWS<<4) + 1)
  31
  32 #define SCAN_INTERVAL           (50) /* ms */
  33 #define HINGE_SCAN_INTERVAL     (150) /* ms */
  34
  35 #define SPITZ_KEY_CALENDER      KEY_F1
  36 #define SPITZ_KEY_ADDRESS       KEY_F2
  37 #define SPITZ_KEY_FN            KEY_F3
  38 #define SPITZ_KEY_CANCEL        KEY_F4
  39 #define SPITZ_KEY_EXOK          KEY_F5
  40 #define SPITZ_KEY_EXCANCEL      KEY_F6
  41 #define SPITZ_KEY_EXJOGDOWN     KEY_F7
  42 #define SPITZ_KEY_EXJOGUP       KEY_F8
  43 #define SPITZ_KEY_JAP1          KEY_LEFTALT
  44 #define SPITZ_KEY_JAP2          KEY_RIGHTCTRL
  45 #define SPITZ_KEY_SYNC          KEY_F9
  46 #define SPITZ_KEY_MAIL          KEY_F10
  47 #define SPITZ_KEY_OK            KEY_F11
  48 #define SPITZ_KEY_MENU          KEY_F12
  49
  50 static unsigned char spitzkbd_keycode[NR_SCANCODES] = {
  51         0,                                                                                                                /* 0 */
  52         KEY_LEFTCTRL, KEY_1, KEY_3, KEY_5, KEY_6, KEY_7, KEY_9, KEY_0, KEY_BACKSPACE, SPITZ_KEY_EXOK, SPITZ_KEY_EXCANCEL, 0, 0, 0, 0, 0,  /* 1-16 */
  53         0, KEY_2, KEY_4, KEY_R, KEY_Y, KEY_8, KEY_I, KEY_O, KEY_P, SPITZ_KEY_EXJOGDOWN, SPITZ_KEY_EXJOGUP, 0, 0, 0, 0, 0, /* 17-32 */
  54         KEY_TAB, KEY_Q, KEY_E, KEY_T, KEY_G, KEY_U, KEY_J, KEY_K, 0, 0, 0, 0, 0, 0, 0, 0,                                 /* 33-48 */
  55         SPITZ_KEY_ADDRESS, KEY_W, KEY_S, KEY_F, KEY_V, KEY_H, KEY_M, KEY_L, 0, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, 0,         /* 49-64 */
  56         SPITZ_KEY_CALENDER, KEY_A, KEY_D, KEY_C, KEY_B, KEY_N, KEY_DOT, 0, KEY_ENTER, KEY_LEFTSHIFT, 0, 0, 0, 0, 0, 0,    /* 65-80 */
  57         SPITZ_KEY_MAIL, KEY_Z, KEY_X, KEY_MINUS, KEY_SPACE, KEY_COMMA, 0, KEY_UP, 0, 0, SPITZ_KEY_FN, 0, 0, 0, 0, 0,      /* 81-96 */
  58         KEY_SYSRQ, SPITZ_KEY_JAP1, SPITZ_KEY_JAP2, SPITZ_KEY_CANCEL, SPITZ_KEY_OK, SPITZ_KEY_MENU, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0, 0, 0, 0  /* 97-112 */
  59 };
  60
  61 static int spitz_strobes[] = {
  62         SPITZ_GPIO_KEY_STROBE0,
  63         SPITZ_GPIO_KEY_STROBE1,
  64         SPITZ_GPIO_KEY_STROBE2,
  65         SPITZ_GPIO_KEY_STROBE3,
  66         SPITZ_GPIO_KEY_STROBE4,
  67         SPITZ_GPIO_KEY_STROBE5,
  68         SPITZ_GPIO_KEY_STROBE6,
  69         SPITZ_GPIO_KEY_STROBE7,
  70         SPITZ_GPIO_KEY_STROBE8,
  71         SPITZ_GPIO_KEY_STROBE9,
  72         SPITZ_GPIO_KEY_STROBE10,
  73 };
  74
  75 static int spitz_senses[] = {
  76         SPITZ_GPIO_KEY_SENSE0,
  77         SPITZ_GPIO_KEY_SENSE1,
  78         SPITZ_GPIO_KEY_SENSE2,
  79         SPITZ_GPIO_KEY_SENSE3,
  80         SPITZ_GPIO_KEY_SENSE4,
  81         SPITZ_GPIO_KEY_SENSE5,
  82         SPITZ_GPIO_KEY_SENSE6,
  83 };
  84
  85 struct spitzkbd {
  86         unsigned char keycode[ARRAY_SIZE(spitzkbd_keycode)];
  87         struct input_dev *input;
  88         char phys[32];
  89
  90         spinlock_t lock;
  91         struct timer_list timer;
  92         struct timer_list htimer;
  93
  94         unsigned int suspended;
  95         unsigned long suspend_jiffies;
  96 };
  97
  98 #define KB_DISCHARGE_DELAY      10
  99 #define KB_ACTIVATE_DELAY       10
 100
 101 /* Helper functions for reading the keyboard matrix
 102  * Note: We should really be using the generic gpio functions to alter
 103  *       GPDR but it requires a function call per GPIO bit which is
 104  *       excessive when we need to access 11 bits at once, multiple times.
 105  * These functions must be called within local_irq_save()/local_irq_restore()
 106  * or similar.
 107  */
 108 static inline void spitzkbd_discharge_all(void)
 109 {
 110         /* STROBE All HiZ */
 111         GPCR0  =  SPITZ_GPIO_G0_STROBE_BIT;
 112         GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
 113         GPCR1  =  SPITZ_GPIO_G1_STROBE_BIT;
 114         GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
 115         GPCR2  =  SPITZ_GPIO_G2_STROBE_BIT;
 116         GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
 117         GPCR3  =  SPITZ_GPIO_G3_STROBE_BIT;
 118         GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
 119 }
 120
 121 static inline void spitzkbd_activate_all(void)
 122 {
 123         /* STROBE ALL -> High */
 124         GPSR0  =  SPITZ_GPIO_G0_STROBE_BIT;
 125         GPDR0 |=  SPITZ_GPIO_G0_STROBE_BIT;
 126         GPSR1  =  SPITZ_GPIO_G1_STROBE_BIT;
 127         GPDR1 |=  SPITZ_GPIO_G1_STROBE_BIT;
 128         GPSR2  =  SPITZ_GPIO_G2_STROBE_BIT;
 129         GPDR2 |=  SPITZ_GPIO_G2_STROBE_BIT;
 130         GPSR3  =  SPITZ_GPIO_G3_STROBE_BIT;
 131         GPDR3 |=  SPITZ_GPIO_G3_STROBE_BIT;
 132
 133         udelay(KB_DISCHARGE_DELAY);
 134
 135         /* Clear any interrupts we may have triggered when altering the GPIO lines */
 136         GEDR0 = SPITZ_GPIO_G0_SENSE_BIT;
 137         GEDR1 = SPITZ_GPIO_G1_SENSE_BIT;
 138         GEDR2 = SPITZ_GPIO_G2_SENSE_BIT;
 139         GEDR3 = SPITZ_GPIO_G3_SENSE_BIT;
 140 }
 141
 142 static inline void spitzkbd_activate_col(int col)
 143 {
 144         int gpio = spitz_strobes[col];
 145         GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
 146         GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
 147         GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
 148         GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
 149         GPSR(gpio) = GPIO_bit(gpio);
 150         GPDR(gpio) |= GPIO_bit(gpio);
 151 }
 152
 153 static inline void spitzkbd_reset_col(int col)
 154 {
 155         int gpio = spitz_strobes[col];
 156         GPDR0 &= ~SPITZ_GPIO_G0_STROBE_BIT;
 157         GPDR1 &= ~SPITZ_GPIO_G1_STROBE_BIT;
 158         GPDR2 &= ~SPITZ_GPIO_G2_STROBE_BIT;
 159         GPDR3 &= ~SPITZ_GPIO_G3_STROBE_BIT;
 160         GPCR(gpio) = GPIO_bit(gpio);
 161         GPDR(gpio) |= GPIO_bit(gpio);
 162 }
 163
 164 static inline int spitzkbd_get_row_status(int col)
 165 {
 166         return ((GPLR0 >> 12) & 0x01) | ((GPLR0 >> 16) & 0x02)
 167                 | ((GPLR2 >> 25) & 0x04) | ((GPLR1 << 1) & 0x08)
 168                 | ((GPLR1 >> 0) & 0x10) | ((GPLR1 >> 1) & 0x60);
 169 }
 170
 171 /*
 172  * The spitz keyboard only generates interrupts when a key is pressed.
 173  * When a key is pressed, we enable a timer which then scans the
 174  * keyboard to detect when the key is released.
 175  */
 176
 177 /* Scan the hardware keyboard and push any changes up through the input layer */
 178 static void spitzkbd_scankeyboard(struct spitzkbd *spitzkbd_data)
 179 {
 180         unsigned int row, col, rowd;
 181         unsigned long flags;
 182         unsigned int num_pressed, pwrkey = ((GPLR(SPITZ_GPIO_ON_KEY) & GPIO_bit(SPITZ_GPIO_ON_KEY)) != 0);
 183
 184         if (spitzkbd_data->suspended)
 185                 return;
 186
 187         spin_lock_irqsave(&spitzkbd_data->lock, flags);
 188
 189         num_pressed = 0;
 190         for (col = 0; col < KB_COLS; col++) {
 191                 /*
 192                  * Discharge the output driver capacitatance
 193                  * in the keyboard matrix. (Yes it is significant..)
 194                  */
 195
 196                 spitzkbd_discharge_all();
 197                 udelay(KB_DISCHARGE_DELAY);
 198
 199                 spitzkbd_activate_col(col);
 200                 udelay(KB_ACTIVATE_DELAY);
 201
 202                 rowd = spitzkbd_get_row_status(col);
 203                 for (row = 0; row < KB_ROWS; row++) {
 204                         unsigned int scancode, pressed;
 205
 206                         scancode = SCANCODE(row, col);
 207                         pressed = rowd & KB_ROWMASK(row);
 208
 209                         input_report_key(spitzkbd_data->input, spitzkbd_data->keycode[scancode], pressed);
 210
 211                         if (pressed)
 212                                 num_pressed++;
 213                 }
 214                 spitzkbd_reset_col(col);
 215         }
 216
 217         spitzkbd_activate_all();
 218
 219         input_report_key(spitzkbd_data->input, SPITZ_KEY_SYNC, (GPLR(SPITZ_GPIO_SYNC) & GPIO_bit(SPITZ_GPIO_SYNC)) != 0 );
 220         input_report_key(spitzkbd_data->input, KEY_SUSPEND, pwrkey);
 221
 222         if (pwrkey && time_after(jiffies, spitzkbd_data->suspend_jiffies + msecs_to_jiffies(1000))) {
 223                 input_event(spitzkbd_data->input, EV_PWR, KEY_SUSPEND, 1);
 224                 spitzkbd_data->suspend_jiffies = jiffies;
 225         }
 226
 227         input_sync(spitzkbd_data->input);
 228
 229         /* if any keys are pressed, enable the timer */
 230         if (num_pressed)
 231                 mod_timer(&spitzkbd_data->timer, jiffies + msecs_to_jiffies(SCAN_INTERVAL));
 232
 233         spin_unlock_irqrestore(&spitzkbd_data->lock, flags);
 234 }
 235
 236 /*
 237  * spitz keyboard interrupt handler.
 238  */
 239 static irqreturn_t spitzkbd_interrupt(int irq, void *dev_id)
 240 {
 241         struct spitzkbd *spitzkbd_data = dev_id;
 242
 243         if (!timer_pending(&spitzkbd_data->timer)) {
 244                 /** wait chattering delay **/
 245                 udelay(20);
 246                 spitzkbd_scankeyboard(spitzkbd_data);
 247         }
 248
 249         return IRQ_HANDLED;
 250 }
 251
 252 /*
 253  * spitz timer checking for released keys
 254  */
 255 static void spitzkbd_timer_callback(unsigned long data)
 256 {
 257         struct spitzkbd *spitzkbd_data = (struct spitzkbd *) data;
 258
 259         spitzkbd_scankeyboard(spitzkbd_data);
 260 }
 261
 262 /*
 263  * The hinge switches generate an interrupt.
 264  * We debounce the switches and pass them to the input system.
 265  */
 266
 267 static irqreturn_t spitzkbd_hinge_isr(int irq, void *dev_id)
 268 {
 269         struct spitzkbd *spitzkbd_data = dev_id;
 270
 271         if (!timer_pending(&spitzkbd_data->htimer))
 272                 mod_timer(&spitzkbd_data->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));
 273
 274         return IRQ_HANDLED;
 275 }
 276
 277 #define HINGE_STABLE_COUNT 2
 278 static int sharpsl_hinge_state;
 279 static int hinge_count;
 280
 281 static void spitzkbd_hinge_timer(unsigned long data)
 282 {
 283         struct spitzkbd *spitzkbd_data = (struct spitzkbd *) data;
 284         unsigned long state;
 285         unsigned long flags;
 286
 287         state = GPLR(SPITZ_GPIO_SWA) & (GPIO_bit(SPITZ_GPIO_SWA)|GPIO_bit(SPITZ_GPIO_SWB));
 288         state |= (GPLR(SPITZ_GPIO_AK_INT) & GPIO_bit(SPITZ_GPIO_AK_INT));
 289         if (state != sharpsl_hinge_state) {
 290                 hinge_count = 0;
 291                 sharpsl_hinge_state = state;
 292         } else if (hinge_count < HINGE_STABLE_COUNT) {
 293                 hinge_count++;
 294         }
 295
 296         if (hinge_count >= HINGE_STABLE_COUNT) {
 297                 spin_lock_irqsave(&spitzkbd_data->lock, flags);
 298
 299                 input_report_switch(spitzkbd_data->input, SW_LID, ((GPLR(SPITZ_GPIO_SWA) & GPIO_bit(SPITZ_GPIO_SWA)) != 0));
 300                 input_report_switch(spitzkbd_data->input, SW_TABLET_MODE, ((GPLR(SPITZ_GPIO_SWB) & GPIO_bit(SPITZ_GPIO_SWB)) != 0));
 301                 input_report_switch(spitzkbd_data->input, SW_HEADPHONE_INSERT, ((GPLR(SPITZ_GPIO_AK_INT) & GPIO_bit(SPITZ_GPIO_AK_INT)) != 0));
 302                 input_sync(spitzkbd_data->input);
 303
 304                 spin_unlock_irqrestore(&spitzkbd_data->lock, flags);
 305         } else {
 306                 mod_timer(&spitzkbd_data->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));
 307         }
 308 }
 309
 310 #ifdef CONFIG_PM
 311 static int spitzkbd_suspend(struct platform_device *dev, pm_message_t state)
 312 {
 313         int i;
 314         struct spitzkbd *spitzkbd = platform_get_drvdata(dev);
 315         spitzkbd->suspended = 1;
 316
 317         /* Set Strobe lines as inputs - *except* strobe line 0 leave this
 318            enabled so we can detect a power button press for resume */
 319         for (i = 1; i < SPITZ_KEY_STROBE_NUM; i++)
 320                 pxa_gpio_mode(spitz_strobes[i] | GPIO_IN);
 321
 322         return 0;
 323 }
 324
 325 static int spitzkbd_resume(struct platform_device *dev)
 326 {
 327         int i;
 328         struct spitzkbd *spitzkbd = platform_get_drvdata(dev);
 329
 330         for (i = 0; i < SPITZ_KEY_STROBE_NUM; i++)
 331                 pxa_gpio_mode(spitz_strobes[i] | GPIO_OUT | GPIO_DFLT_HIGH);
 332
 333         /* Upon resume, ignore the suspend key for a short while */
 334         spitzkbd->suspend_jiffies = jiffies;
 335         spitzkbd->suspended = 0;
 336
 337         return 0;
 338 }
 339 #else
 340 #define spitzkbd_suspend        NULL
 341 #define spitzkbd_resume         NULL
 342 #endif
 343
 344 static int __devinit spitzkbd_probe(struct platform_device *dev)
 345 {
 346         struct spitzkbd *spitzkbd;
 347         struct input_dev *input_dev;
 348         int i, err = -ENOMEM;
 349
 350         spitzkbd = kzalloc(sizeof(struct spitzkbd), GFP_KERNEL);
 351         input_dev = input_allocate_device();
 352         if (!spitzkbd || !input_dev)
 353                 goto fail;
 354
 355         platform_set_drvdata(dev, spitzkbd);
 356         strcpy(spitzkbd->phys, "spitzkbd/input0");
 357
 358         spin_lock_init(&spitzkbd->lock);
 359
 360         /* Init Keyboard rescan timer */
 361         init_timer(&spitzkbd->timer);
 362         spitzkbd->timer.function = spitzkbd_timer_callback;
 363         spitzkbd->timer.data = (unsigned long) spitzkbd;
 364
 365         /* Init Hinge Timer */
 366         init_timer(&spitzkbd->htimer);
 367         spitzkbd->htimer.function = spitzkbd_hinge_timer;
 368         spitzkbd->htimer.data = (unsigned long) spitzkbd;
 369
 370         spitzkbd->suspend_jiffies = jiffies;
 371
 372         spitzkbd->input = input_dev;
 373
 374         input_dev->name = "Spitz Keyboard";
 375         input_dev->phys = spitzkbd->phys;
 376         input_dev->dev.parent = &dev->dev;
 377
 378         input_dev->id.bustype = BUS_HOST;
 379         input_dev->id.vendor = 0x0001;
 380         input_dev->id.product = 0x0001;
 381         input_dev->id.version = 0x0100;
 382
 383         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
 384                 BIT_MASK(EV_PWR) | BIT_MASK(EV_SW);
 385         input_dev->keycode = spitzkbd->keycode;
 386         input_dev->keycodesize = sizeof(unsigned char);
 387         input_dev->keycodemax = ARRAY_SIZE(spitzkbd_keycode);
 388
 389         memcpy(spitzkbd->keycode, spitzkbd_keycode, sizeof(spitzkbd->keycode));
 390         for (i = 0; i < ARRAY_SIZE(spitzkbd_keycode); i++)
 391                 set_bit(spitzkbd->keycode[i], input_dev->keybit);
 392         clear_bit(0, input_dev->keybit);
 393         set_bit(KEY_SUSPEND, input_dev->keybit);
 394         set_bit(SW_LID, input_dev->swbit);
 395         set_bit(SW_TABLET_MODE, input_dev->swbit);
 396         set_bit(SW_HEADPHONE_INSERT, input_dev->swbit);
 397
 398         err = input_register_device(input_dev);
 399         if (err)
 400                 goto fail;
 401
 402         mod_timer(&spitzkbd->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));
 403
 404         /* Setup sense interrupts - RisingEdge Detect, sense lines as inputs */
 405         for (i = 0; i < SPITZ_KEY_SENSE_NUM; i++) {
 406                 pxa_gpio_mode(spitz_senses[i] | GPIO_IN);
 407                 if (request_irq(IRQ_GPIO(spitz_senses[i]), spitzkbd_interrupt,
 408                                 IRQF_DISABLED|IRQF_TRIGGER_RISING,
 409                                 "Spitzkbd Sense", spitzkbd))
 410                         printk(KERN_WARNING "spitzkbd: Can't get Sense IRQ: %d!\n", i);
 411         }
 412
 413         /* Set Strobe lines as outputs - set high */
 414         for (i = 0; i < SPITZ_KEY_STROBE_NUM; i++)
 415                 pxa_gpio_mode(spitz_strobes[i] | GPIO_OUT | GPIO_DFLT_HIGH);
 416
 417         pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN);
 418         pxa_gpio_mode(SPITZ_GPIO_ON_KEY | GPIO_IN);
 419         pxa_gpio_mode(SPITZ_GPIO_SWA | GPIO_IN);
 420         pxa_gpio_mode(SPITZ_GPIO_SWB | GPIO_IN);
 421
 422         request_irq(SPITZ_IRQ_GPIO_SYNC, spitzkbd_interrupt,
 423                     IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 424                     "Spitzkbd Sync", spitzkbd);
 425         request_irq(SPITZ_IRQ_GPIO_ON_KEY, spitzkbd_interrupt,
 426                     IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 427                     "Spitzkbd PwrOn", spitzkbd);
 428         request_irq(SPITZ_IRQ_GPIO_SWA, spitzkbd_hinge_isr,
 429                     IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 430                     "Spitzkbd SWA", spitzkbd);
 431         request_irq(SPITZ_IRQ_GPIO_SWB, spitzkbd_hinge_isr,
 432                     IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 433                     "Spitzkbd SWB", spitzkbd);
 434         request_irq(SPITZ_IRQ_GPIO_AK_INT, spitzkbd_hinge_isr,
 435                     IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 436                     "Spitzkbd HP", spitzkbd);
 437
 438         return 0;
 439
 440  fail:  input_free_device(input_dev);
 441         kfree(spitzkbd);
 442         return err;
 443 }
 444
 445 static int __devexit spitzkbd_remove(struct platform_device *dev)
 446 {
 447         int i;
 448         struct spitzkbd *spitzkbd = platform_get_drvdata(dev);
 449
 450         for (i = 0; i < SPITZ_KEY_SENSE_NUM; i++)
 451                 free_irq(IRQ_GPIO(spitz_senses[i]), spitzkbd);
 452
 453         free_irq(SPITZ_IRQ_GPIO_SYNC, spitzkbd);
 454         free_irq(SPITZ_IRQ_GPIO_ON_KEY, spitzkbd);
 455         free_irq(SPITZ_IRQ_GPIO_SWA, spitzkbd);
 456         free_irq(SPITZ_IRQ_GPIO_SWB, spitzkbd);
 457         free_irq(SPITZ_IRQ_GPIO_AK_INT, spitzkbd);
 458
 459         del_timer_sync(&spitzkbd->htimer);
 460         del_timer_sync(&spitzkbd->timer);
 461
 462         input_unregister_device(spitzkbd->input);
 463
 464         kfree(spitzkbd);
 465
 466         return 0;
 467 }
 468
 469 static struct platform_driver spitzkbd_driver = {
 470         .probe          = spitzkbd_probe,
 471         .remove         = __devexit_p(spitzkbd_remove),
 472         .suspend        = spitzkbd_suspend,
 473         .resume         = spitzkbd_resume,
 474         .driver         = {
 475                 .name   = "spitz-keyboard",
 476                 .owner  = THIS_MODULE,
 477         },
 478 };
 479
 480 static int __init spitzkbd_init(void)
 481 {
 482         return platform_driver_register(&spitzkbd_driver);
 483 }
 484
 485 static void __exit spitzkbd_exit(void)
 486 {
 487         platform_driver_unregister(&spitzkbd_driver);
 488 }
 489
 490 module_init(spitzkbd_init);
 491 module_exit(spitzkbd_exit);
 492
 493 MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
 494 MODULE_DESCRIPTION("Spitz Keyboard Driver");
 495 MODULE_LICENSE("GPL v2");
 496 MODULE_ALIAS("platform:spitz-keyboard");