drivers/input/keyboard/atkbd.c

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This source file includes following definitions.
atkbd_need_xlate
atkbd_calculate_xl_bit
atkbd_compat_scancode
atkbd_interrupt
atkbd_set_repeat_rate
atkbd_set_leds
atkbd_event_work
atkbd_schedule_event_work
atkbd_event
atkbd_enable
atkbd_disable
atkbd_activate
atkbd_deactivate
atkbd_probe
atkbd_select_set
atkbd_reset_state
atkbd_cleanup
atkbd_disconnect
atkbd_apply_forced_release_keylist
atkbd_oqo_01plus_scancode_fixup
atkbd_set_keycode_table
atkbd_set_device_attrs
atkbd_connect
atkbd_reconnect
atkbd_attr_show_helper
atkbd_attr_set_helper
atkbd_show_extra
atkbd_set_extra
atkbd_show_force_release
atkbd_set_force_release
atkbd_show_scroll
atkbd_set_scroll
atkbd_show_set
atkbd_set_set
atkbd_show_softrepeat
atkbd_set_softrepeat
atkbd_show_softraw
atkbd_set_softraw
atkbd_show_err_count
atkbd_setup_forced_release
atkbd_setup_scancode_fixup
atkbd_deactivate_fixup
atkbd_init
atkbd_exit
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * AT and PS/2 keyboard driver
   4  *
   5  * Copyright (c) 1999-2002 Vojtech Pavlik
   6  */
   7 
   8 
   9 /*
  10  * This driver can handle standard AT keyboards and PS/2 keyboards in
  11  * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb
  12  * input-only controllers and AT keyboards connected over a one way RS232
  13  * converter.
  14  */
  15 
  16 #include <linux/delay.h>
  17 #include <linux/module.h>
  18 #include <linux/slab.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/init.h>
  21 #include <linux/input.h>
  22 #include <linux/serio.h>
  23 #include <linux/workqueue.h>
  24 #include <linux/libps2.h>
  25 #include <linux/mutex.h>
  26 #include <linux/dmi.h>
  27 
  28 #define DRIVER_DESC     "AT and PS/2 keyboard driver"
  29 
  30 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
  31 MODULE_DESCRIPTION(DRIVER_DESC);
  32 MODULE_LICENSE("GPL");
  33 
  34 static int atkbd_set = 2;
  35 module_param_named(set, atkbd_set, int, 0);
  36 MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)");
  37 
  38 #if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
  39 static bool atkbd_reset;
  40 #else
  41 static bool atkbd_reset = true;
  42 #endif
  43 module_param_named(reset, atkbd_reset, bool, 0);
  44 MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
  45 
  46 static bool atkbd_softrepeat;
  47 module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
  48 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
  49 
  50 static bool atkbd_softraw = true;
  51 module_param_named(softraw, atkbd_softraw, bool, 0);
  52 MODULE_PARM_DESC(softraw, "Use software generated rawmode");
  53 
  54 static bool atkbd_scroll;
  55 module_param_named(scroll, atkbd_scroll, bool, 0);
  56 MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
  57 
  58 static bool atkbd_extra;
  59 module_param_named(extra, atkbd_extra, bool, 0);
  60 MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
  61 
  62 static bool atkbd_terminal;
  63 module_param_named(terminal, atkbd_terminal, bool, 0);
  64 MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2");
  65 
  66 /*
  67  * Scancode to keycode tables. These are just the default setting, and
  68  * are loadable via a userland utility.
  69  */
  70 
  71 #define ATKBD_KEYMAP_SIZE       512
  72 
  73 static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {
  74 
  75 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
  76 
  77 /* XXX: need a more general approach */
  78 
  79 #include "hpps2atkbd.h" /* include the keyboard scancodes */
  80 
  81 #else
  82           0, 67, 65, 63, 61, 59, 60, 88,  0, 68, 66, 64, 62, 15, 41,117,
  83           0, 56, 42, 93, 29, 16,  2,  0,  0,  0, 44, 31, 30, 17,  3,  0,
  84           0, 46, 45, 32, 18,  5,  4, 95,  0, 57, 47, 33, 20, 19,  6,183,
  85           0, 49, 48, 35, 34, 21,  7,184,  0,  0, 50, 36, 22,  8,  9,185,
  86           0, 51, 37, 23, 24, 11, 10,  0,  0, 52, 53, 38, 39, 25, 12,  0,
  87           0, 89, 40,  0, 26, 13,  0,  0, 58, 54, 28, 27,  0, 43,  0, 85,
  88           0, 86, 91, 90, 92,  0, 14, 94,  0, 79,124, 75, 71,121,  0,  0,
  89          82, 83, 80, 76, 77, 72,  1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
  90 
  91           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  92         217,100,255,  0, 97,165,  0,  0,156,  0,  0,  0,  0,  0,  0,125,
  93         173,114,  0,113,  0,  0,  0,126,128,  0,  0,140,  0,  0,  0,127,
  94         159,  0,115,  0,164,  0,  0,116,158,  0,172,166,  0,  0,  0,142,
  95         157,  0,  0,  0,  0,  0,  0,  0,155,  0, 98,  0,  0,163,  0,  0,
  96         226,  0,  0,  0,  0,  0,  0,  0,  0,255, 96,  0,  0,  0,143,  0,
  97           0,  0,  0,  0,  0,  0,  0,  0,  0,107,  0,105,102,  0,  0,112,
  98         110,111,108,112,106,103,  0,119,  0,118,109,  0, 99,104,119,  0,
  99 
 100           0,  0,  0, 65, 99,
 101 #endif
 102 };
 103 
 104 static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = {
 105 
 106           0,  0,  0,  0,  0,  0,  0, 59,  1,138,128,129,130, 15, 41, 60,
 107         131, 29, 42, 86, 58, 16,  2, 61,133, 56, 44, 31, 30, 17,  3, 62,
 108         134, 46, 45, 32, 18,  5,  4, 63,135, 57, 47, 33, 20, 19,  6, 64,
 109         136, 49, 48, 35, 34, 21,  7, 65,137,100, 50, 36, 22,  8,  9, 66,
 110         125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
 111         113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
 112         108,105,119,103,111,107, 14,110,  0, 79,106, 75, 71,109,102,104,
 113          82, 83, 80, 76, 77, 72, 69, 98,  0, 96, 81,  0, 78, 73, 55,183,
 114 
 115         184,185,186,187, 74, 94, 92, 93,  0,  0,  0,125,126,127,112,  0,
 116           0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
 117         148,149,147,140
 118 };
 119 
 120 static const unsigned short atkbd_unxlate_table[128] = {
 121           0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
 122          21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
 123          35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
 124          50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88,  5,  6,  4, 12,  3,
 125          11,  2, 10,  1,  9,119,126,108,117,125,123,107,115,116,121,105,
 126         114,122,112,113,127, 96, 97,120,  7, 15, 23, 31, 39, 47, 55, 63,
 127          71, 79, 86, 94,  8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
 128          19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
 129 };
 130 
 131 #define ATKBD_CMD_SETLEDS       0x10ed
 132 #define ATKBD_CMD_GSCANSET      0x11f0
 133 #define ATKBD_CMD_SSCANSET      0x10f0
 134 #define ATKBD_CMD_GETID         0x02f2
 135 #define ATKBD_CMD_SETREP        0x10f3
 136 #define ATKBD_CMD_ENABLE        0x00f4
 137 #define ATKBD_CMD_RESET_DIS     0x00f5  /* Reset to defaults and disable */
 138 #define ATKBD_CMD_RESET_DEF     0x00f6  /* Reset to defaults */
 139 #define ATKBD_CMD_SETALL_MB     0x00f8  /* Set all keys to give break codes */
 140 #define ATKBD_CMD_SETALL_MBR    0x00fa  /* ... and repeat */
 141 #define ATKBD_CMD_RESET_BAT     0x02ff
 142 #define ATKBD_CMD_RESEND        0x00fe
 143 #define ATKBD_CMD_EX_ENABLE     0x10ea
 144 #define ATKBD_CMD_EX_SETLEDS    0x20eb
 145 #define ATKBD_CMD_OK_GETID      0x02e8
 146 
 147 #define ATKBD_RET_ACK           0xfa
 148 #define ATKBD_RET_NAK           0xfe
 149 #define ATKBD_RET_BAT           0xaa
 150 #define ATKBD_RET_EMUL0         0xe0
 151 #define ATKBD_RET_EMUL1         0xe1
 152 #define ATKBD_RET_RELEASE       0xf0
 153 #define ATKBD_RET_HANJA         0xf1
 154 #define ATKBD_RET_HANGEUL       0xf2
 155 #define ATKBD_RET_ERR           0xff
 156 
 157 #define ATKBD_KEY_UNKNOWN       0
 158 #define ATKBD_KEY_NULL          255
 159 
 160 #define ATKBD_SCR_1             0xfffe
 161 #define ATKBD_SCR_2             0xfffd
 162 #define ATKBD_SCR_4             0xfffc
 163 #define ATKBD_SCR_8             0xfffb
 164 #define ATKBD_SCR_CLICK         0xfffa
 165 #define ATKBD_SCR_LEFT          0xfff9
 166 #define ATKBD_SCR_RIGHT         0xfff8
 167 
 168 #define ATKBD_SPECIAL           ATKBD_SCR_RIGHT
 169 
 170 #define ATKBD_LED_EVENT_BIT     0
 171 #define ATKBD_REP_EVENT_BIT     1
 172 
 173 #define ATKBD_XL_ERR            0x01
 174 #define ATKBD_XL_BAT            0x02
 175 #define ATKBD_XL_ACK            0x04
 176 #define ATKBD_XL_NAK            0x08
 177 #define ATKBD_XL_HANGEUL        0x10
 178 #define ATKBD_XL_HANJA          0x20
 179 
 180 static const struct {
 181         unsigned short keycode;
 182         unsigned char set2;
 183 } atkbd_scroll_keys[] = {
 184         { ATKBD_SCR_1,     0xc5 },
 185         { ATKBD_SCR_2,     0x9d },
 186         { ATKBD_SCR_4,     0xa4 },
 187         { ATKBD_SCR_8,     0x9b },
 188         { ATKBD_SCR_CLICK, 0xe0 },
 189         { ATKBD_SCR_LEFT,  0xcb },
 190         { ATKBD_SCR_RIGHT, 0xd2 },
 191 };
 192 
 193 /*
 194  * The atkbd control structure
 195  */
 196 
 197 struct atkbd {
 198 
 199         struct ps2dev ps2dev;
 200         struct input_dev *dev;
 201 
 202         /* Written only during init */
 203         char name[64];
 204         char phys[32];
 205 
 206         unsigned short id;
 207         unsigned short keycode[ATKBD_KEYMAP_SIZE];
 208         DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE);
 209         unsigned char set;
 210         bool translated;
 211         bool extra;
 212         bool write;
 213         bool softrepeat;
 214         bool softraw;
 215         bool scroll;
 216         bool enabled;
 217 
 218         /* Accessed only from interrupt */
 219         unsigned char emul;
 220         bool resend;
 221         bool release;
 222         unsigned long xl_bit;
 223         unsigned int last;
 224         unsigned long time;
 225         unsigned long err_count;
 226 
 227         struct delayed_work event_work;
 228         unsigned long event_jiffies;
 229         unsigned long event_mask;
 230 
 231         /* Serializes reconnect(), attr->set() and event work */
 232         struct mutex mutex;
 233 };
 234 
 235 /*
 236  * System-specific keymap fixup routine
 237  */
 238 static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
 239 static void *atkbd_platform_fixup_data;
 240 static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int);
 241 
 242 /*
 243  * Certain keyboards to not like ATKBD_CMD_RESET_DIS and stop responding
 244  * to many commands until full reset (ATKBD_CMD_RESET_BAT) is performed.
 245  */
 246 static bool atkbd_skip_deactivate;
 247 
 248 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
 249                                 ssize_t (*handler)(struct atkbd *, char *));
 250 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
 251                                 ssize_t (*handler)(struct atkbd *, const char *, size_t));
 252 #define ATKBD_DEFINE_ATTR(_name)                                                \
 253 static ssize_t atkbd_show_##_name(struct atkbd *, char *);                      \
 254 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t);         \
 255 static ssize_t atkbd_do_show_##_name(struct device *d,                          \
 256                                 struct device_attribute *attr, char *b)         \
 257 {                                                                               \
 258         return atkbd_attr_show_helper(d, b, atkbd_show_##_name);                \
 259 }                                                                               \
 260 static ssize_t atkbd_do_set_##_name(struct device *d,                           \
 261                         struct device_attribute *attr, const char *b, size_t s) \
 262 {                                                                               \
 263         return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name);               \
 264 }                                                                               \
 265 static struct device_attribute atkbd_attr_##_name =                             \
 266         __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
 267 
 268 ATKBD_DEFINE_ATTR(extra);
 269 ATKBD_DEFINE_ATTR(force_release);
 270 ATKBD_DEFINE_ATTR(scroll);
 271 ATKBD_DEFINE_ATTR(set);
 272 ATKBD_DEFINE_ATTR(softrepeat);
 273 ATKBD_DEFINE_ATTR(softraw);
 274 
 275 #define ATKBD_DEFINE_RO_ATTR(_name)                                             \
 276 static ssize_t atkbd_show_##_name(struct atkbd *, char *);                      \
 277 static ssize_t atkbd_do_show_##_name(struct device *d,                          \
 278                                 struct device_attribute *attr, char *b)         \
 279 {                                                                               \
 280         return atkbd_attr_show_helper(d, b, atkbd_show_##_name);                \
 281 }                                                                               \
 282 static struct device_attribute atkbd_attr_##_name =                             \
 283         __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
 284 
 285 ATKBD_DEFINE_RO_ATTR(err_count);
 286 
 287 static struct attribute *atkbd_attributes[] = {
 288         &atkbd_attr_extra.attr,
 289         &atkbd_attr_force_release.attr,
 290         &atkbd_attr_scroll.attr,
 291         &atkbd_attr_set.attr,
 292         &atkbd_attr_softrepeat.attr,
 293         &atkbd_attr_softraw.attr,
 294         &atkbd_attr_err_count.attr,
 295         NULL
 296 };
 297 
 298 static struct attribute_group atkbd_attribute_group = {
 299         .attrs  = atkbd_attributes,
 300 };
 301 
 302 static const unsigned int xl_table[] = {
 303         ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
 304         ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
 305 };
 306 
 307 /*
 308  * Checks if we should mangle the scancode to extract 'release' bit
 309  * in translated mode.
 310  */
 311 static bool atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
 312 {
 313         int i;
 314 
 315         if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
 316                 return false;
 317 
 318         for (i = 0; i < ARRAY_SIZE(xl_table); i++)
 319                 if (code == xl_table[i])
 320                         return test_bit(i, &xl_bit);
 321 
 322         return true;
 323 }
 324 
 325 /*
 326  * Calculates new value of xl_bit so the driver can distinguish
 327  * between make/break pair of scancodes for select keys and PS/2
 328  * protocol responses.
 329  */
 330 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
 331 {
 332         int i;
 333 
 334         for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
 335                 if (!((code ^ xl_table[i]) & 0x7f)) {
 336                         if (code & 0x80)
 337                                 __clear_bit(i, &atkbd->xl_bit);
 338                         else
 339                                 __set_bit(i, &atkbd->xl_bit);
 340                         break;
 341                 }
 342         }
 343 }
 344 
 345 /*
 346  * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
 347  * keeping kernel 2.4 compatibility for set 2
 348  */
 349 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
 350 {
 351         if (atkbd->set == 3) {
 352                 if (atkbd->emul == 1)
 353                         code |= 0x100;
 354         } else {
 355                 code = (code & 0x7f) | ((code & 0x80) << 1);
 356                 if (atkbd->emul == 1)
 357                         code |= 0x80;
 358         }
 359 
 360         return code;
 361 }
 362 
 363 /*
 364  * atkbd_interrupt(). Here takes place processing of data received from
 365  * the keyboard into events.
 366  */
 367 
 368 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
 369                                    unsigned int flags)
 370 {
 371         struct atkbd *atkbd = serio_get_drvdata(serio);
 372         struct input_dev *dev = atkbd->dev;
 373         unsigned int code = data;
 374         int scroll = 0, hscroll = 0, click = -1;
 375         int value;
 376         unsigned short keycode;
 377 
 378         dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, flags);
 379 
 380 #if !defined(__i386__) && !defined (__x86_64__)
 381         if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
 382                 dev_warn(&serio->dev, "Frame/parity error: %02x\n", flags);
 383                 serio_write(serio, ATKBD_CMD_RESEND);
 384                 atkbd->resend = true;
 385                 goto out;
 386         }
 387 
 388         if (!flags && data == ATKBD_RET_ACK)
 389                 atkbd->resend = false;
 390 #endif
 391 
 392         if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
 393                 if  (ps2_handle_ack(&atkbd->ps2dev, data))
 394                         goto out;
 395 
 396         if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
 397                 if  (ps2_handle_response(&atkbd->ps2dev, data))
 398                         goto out;
 399 
 400         pm_wakeup_event(&serio->dev, 0);
 401 
 402         if (!atkbd->enabled)
 403                 goto out;
 404 
 405         input_event(dev, EV_MSC, MSC_RAW, code);
 406 
 407         if (atkbd_platform_scancode_fixup)
 408                 code = atkbd_platform_scancode_fixup(atkbd, code);
 409 
 410         if (atkbd->translated) {
 411 
 412                 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
 413                         atkbd->release = code >> 7;
 414                         code &= 0x7f;
 415                 }
 416 
 417                 if (!atkbd->emul)
 418                         atkbd_calculate_xl_bit(atkbd, data);
 419         }
 420 
 421         switch (code) {
 422         case ATKBD_RET_BAT:
 423                 atkbd->enabled = false;
 424                 serio_reconnect(atkbd->ps2dev.serio);
 425                 goto out;
 426         case ATKBD_RET_EMUL0:
 427                 atkbd->emul = 1;
 428                 goto out;
 429         case ATKBD_RET_EMUL1:
 430                 atkbd->emul = 2;
 431                 goto out;
 432         case ATKBD_RET_RELEASE:
 433                 atkbd->release = true;
 434                 goto out;
 435         case ATKBD_RET_ACK:
 436         case ATKBD_RET_NAK:
 437                 if (printk_ratelimit())
 438                         dev_warn(&serio->dev,
 439                                  "Spurious %s on %s. "
 440                                  "Some program might be trying to access hardware directly.\n",
 441                                  data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
 442                 goto out;
 443         case ATKBD_RET_ERR:
 444                 atkbd->err_count++;
 445                 dev_dbg(&serio->dev, "Keyboard on %s reports too many keys pressed.\n",
 446                         serio->phys);
 447                 goto out;
 448         }
 449 
 450         code = atkbd_compat_scancode(atkbd, code);
 451 
 452         if (atkbd->emul && --atkbd->emul)
 453                 goto out;
 454 
 455         keycode = atkbd->keycode[code];
 456 
 457         if (!(atkbd->release && test_bit(code, atkbd->force_release_mask)))
 458                 if (keycode != ATKBD_KEY_NULL)
 459                         input_event(dev, EV_MSC, MSC_SCAN, code);
 460 
 461         switch (keycode) {
 462         case ATKBD_KEY_NULL:
 463                 break;
 464         case ATKBD_KEY_UNKNOWN:
 465                 dev_warn(&serio->dev,
 466                          "Unknown key %s (%s set %d, code %#x on %s).\n",
 467                          atkbd->release ? "released" : "pressed",
 468                          atkbd->translated ? "translated" : "raw",
 469                          atkbd->set, code, serio->phys);
 470                 dev_warn(&serio->dev,
 471                          "Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
 472                          code & 0x80 ? "e0" : "", code & 0x7f);
 473                 input_sync(dev);
 474                 break;
 475         case ATKBD_SCR_1:
 476                 scroll = 1;
 477                 break;
 478         case ATKBD_SCR_2:
 479                 scroll = 2;
 480                 break;
 481         case ATKBD_SCR_4:
 482                 scroll = 4;
 483                 break;
 484         case ATKBD_SCR_8:
 485                 scroll = 8;
 486                 break;
 487         case ATKBD_SCR_CLICK:
 488                 click = !atkbd->release;
 489                 break;
 490         case ATKBD_SCR_LEFT:
 491                 hscroll = -1;
 492                 break;
 493         case ATKBD_SCR_RIGHT:
 494                 hscroll = 1;
 495                 break;
 496         default:
 497                 if (atkbd->release) {
 498                         value = 0;
 499                         atkbd->last = 0;
 500                 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
 501                         /* Workaround Toshiba laptop multiple keypress */
 502                         value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
 503                 } else {
 504                         value = 1;
 505                         atkbd->last = code;
 506                         atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
 507                 }
 508 
 509                 input_event(dev, EV_KEY, keycode, value);
 510                 input_sync(dev);
 511 
 512                 if (value && test_bit(code, atkbd->force_release_mask)) {
 513                         input_event(dev, EV_MSC, MSC_SCAN, code);
 514                         input_report_key(dev, keycode, 0);
 515                         input_sync(dev);
 516                 }
 517         }
 518 
 519         if (atkbd->scroll) {
 520                 if (click != -1)
 521                         input_report_key(dev, BTN_MIDDLE, click);
 522                 input_report_rel(dev, REL_WHEEL,
 523                                  atkbd->release ? -scroll : scroll);
 524                 input_report_rel(dev, REL_HWHEEL, hscroll);
 525                 input_sync(dev);
 526         }
 527 
 528         atkbd->release = false;
 529 out:
 530         return IRQ_HANDLED;
 531 }
 532 
 533 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
 534 {
 535         const short period[32] =
 536                 { 33,  37,  42,  46,  50,  54,  58,  63,  67,  75,  83,  92, 100, 109, 116, 125,
 537                  133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
 538         const short delay[4] =
 539                 { 250, 500, 750, 1000 };
 540 
 541         struct input_dev *dev = atkbd->dev;
 542         unsigned char param;
 543         int i = 0, j = 0;
 544 
 545         while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
 546                 i++;
 547         dev->rep[REP_PERIOD] = period[i];
 548 
 549         while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
 550                 j++;
 551         dev->rep[REP_DELAY] = delay[j];
 552 
 553         param = i | (j << 5);
 554         return ps2_command(&atkbd->ps2dev, &param, ATKBD_CMD_SETREP);
 555 }
 556 
 557 static int atkbd_set_leds(struct atkbd *atkbd)
 558 {
 559         struct input_dev *dev = atkbd->dev;
 560         unsigned char param[2];
 561 
 562         param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
 563                  | (test_bit(LED_NUML,    dev->led) ? 2 : 0)
 564                  | (test_bit(LED_CAPSL,   dev->led) ? 4 : 0);
 565         if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
 566                 return -1;
 567 
 568         if (atkbd->extra) {
 569                 param[0] = 0;
 570                 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
 571                          | (test_bit(LED_SLEEP,   dev->led) ? 0x02 : 0)
 572                          | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
 573                          | (test_bit(LED_MISC,    dev->led) ? 0x10 : 0)
 574                          | (test_bit(LED_MUTE,    dev->led) ? 0x20 : 0);
 575                 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
 576                         return -1;
 577         }
 578 
 579         return 0;
 580 }
 581 
 582 /*
 583  * atkbd_event_work() is used to complete processing of events that
 584  * can not be processed by input_event() which is often called from
 585  * interrupt context.
 586  */
 587 
 588 static void atkbd_event_work(struct work_struct *work)
 589 {
 590         struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
 591 
 592         mutex_lock(&atkbd->mutex);
 593 
 594         if (!atkbd->enabled) {
 595                 /*
 596                  * Serio ports are resumed asynchronously so while driver core
 597                  * thinks that device is already fully operational in reality
 598                  * it may not be ready yet. In this case we need to keep
 599                  * rescheduling till reconnect completes.
 600                  */
 601                 schedule_delayed_work(&atkbd->event_work,
 602                                         msecs_to_jiffies(100));
 603         } else {
 604                 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
 605                         atkbd_set_leds(atkbd);
 606 
 607                 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
 608                         atkbd_set_repeat_rate(atkbd);
 609         }
 610 
 611         mutex_unlock(&atkbd->mutex);
 612 }
 613 
 614 /*
 615  * Schedule switch for execution. We need to throttle requests,
 616  * otherwise keyboard may become unresponsive.
 617  */
 618 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
 619 {
 620         unsigned long delay = msecs_to_jiffies(50);
 621 
 622         if (time_after(jiffies, atkbd->event_jiffies + delay))
 623                 delay = 0;
 624 
 625         atkbd->event_jiffies = jiffies;
 626         set_bit(event_bit, &atkbd->event_mask);
 627         mb();
 628         schedule_delayed_work(&atkbd->event_work, delay);
 629 }
 630 
 631 /*
 632  * Event callback from the input module. Events that change the state of
 633  * the hardware are processed here. If action can not be performed in
 634  * interrupt context it is offloaded to atkbd_event_work.
 635  */
 636 
 637 static int atkbd_event(struct input_dev *dev,
 638                         unsigned int type, unsigned int code, int value)
 639 {
 640         struct atkbd *atkbd = input_get_drvdata(dev);
 641 
 642         if (!atkbd->write)
 643                 return -1;
 644 
 645         switch (type) {
 646 
 647         case EV_LED:
 648                 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
 649                 return 0;
 650 
 651         case EV_REP:
 652                 if (!atkbd->softrepeat)
 653                         atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
 654                 return 0;
 655 
 656         default:
 657                 return -1;
 658         }
 659 }
 660 
 661 /*
 662  * atkbd_enable() signals that interrupt handler is allowed to
 663  * generate input events.
 664  */
 665 
 666 static inline void atkbd_enable(struct atkbd *atkbd)
 667 {
 668         serio_pause_rx(atkbd->ps2dev.serio);
 669         atkbd->enabled = true;
 670         serio_continue_rx(atkbd->ps2dev.serio);
 671 }
 672 
 673 /*
 674  * atkbd_disable() tells input handler that all incoming data except
 675  * for ACKs and command response should be dropped.
 676  */
 677 
 678 static inline void atkbd_disable(struct atkbd *atkbd)
 679 {
 680         serio_pause_rx(atkbd->ps2dev.serio);
 681         atkbd->enabled = false;
 682         serio_continue_rx(atkbd->ps2dev.serio);
 683 }
 684 
 685 static int atkbd_activate(struct atkbd *atkbd)
 686 {
 687         struct ps2dev *ps2dev = &atkbd->ps2dev;
 688 
 689 /*
 690  * Enable the keyboard to receive keystrokes.
 691  */
 692 
 693         if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
 694                 dev_err(&ps2dev->serio->dev,
 695                         "Failed to enable keyboard on %s\n",
 696                         ps2dev->serio->phys);
 697                 return -1;
 698         }
 699 
 700         return 0;
 701 }
 702 
 703 /*
 704  * atkbd_deactivate() resets and disables the keyboard from sending
 705  * keystrokes.
 706  */
 707 
 708 static void atkbd_deactivate(struct atkbd *atkbd)
 709 {
 710         struct ps2dev *ps2dev = &atkbd->ps2dev;
 711 
 712         if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_DIS))
 713                 dev_err(&ps2dev->serio->dev,
 714                         "Failed to deactivate keyboard on %s\n",
 715                         ps2dev->serio->phys);
 716 }
 717 
 718 /*
 719  * atkbd_probe() probes for an AT keyboard on a serio port.
 720  */
 721 
 722 static int atkbd_probe(struct atkbd *atkbd)
 723 {
 724         struct ps2dev *ps2dev = &atkbd->ps2dev;
 725         unsigned char param[2];
 726 
 727 /*
 728  * Some systems, where the bit-twiddling when testing the io-lines of the
 729  * controller may confuse the keyboard need a full reset of the keyboard. On
 730  * these systems the BIOS also usually doesn't do it for us.
 731  */
 732 
 733         if (atkbd_reset)
 734                 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
 735                         dev_warn(&ps2dev->serio->dev,
 736                                  "keyboard reset failed on %s\n",
 737                                  ps2dev->serio->phys);
 738 
 739 /*
 740  * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
 741  * Some keyboards report different values, but the first byte is always 0xab or
 742  * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
 743  * should make sure we don't try to set the LEDs on it.
 744  */
 745 
 746         param[0] = param[1] = 0xa5;     /* initialize with invalid values */
 747         if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
 748 
 749 /*
 750  * If the get ID command failed, we check if we can at least set the LEDs on
 751  * the keyboard. This should work on every keyboard out there. It also turns
 752  * the LEDs off, which we want anyway.
 753  */
 754                 param[0] = 0;
 755                 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
 756                         return -1;
 757                 atkbd->id = 0xabba;
 758                 return 0;
 759         }
 760 
 761         if (!ps2_is_keyboard_id(param[0]))
 762                 return -1;
 763 
 764         atkbd->id = (param[0] << 8) | param[1];
 765 
 766         if (atkbd->id == 0xaca1 && atkbd->translated) {
 767                 dev_err(&ps2dev->serio->dev,
 768                         "NCD terminal keyboards are only supported on non-translating controllers. "
 769                         "Use i8042.direct=1 to disable translation.\n");
 770                 return -1;
 771         }
 772 
 773 /*
 774  * Make sure nothing is coming from the keyboard and disturbs our
 775  * internal state.
 776  */
 777         if (!atkbd_skip_deactivate)
 778                 atkbd_deactivate(atkbd);
 779 
 780         return 0;
 781 }
 782 
 783 /*
 784  * atkbd_select_set checks if a keyboard has a working Set 3 support, and
 785  * sets it into that. Unfortunately there are keyboards that can be switched
 786  * to Set 3, but don't work well in that (BTC Multimedia ...)
 787  */
 788 
 789 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
 790 {
 791         struct ps2dev *ps2dev = &atkbd->ps2dev;
 792         unsigned char param[2];
 793 
 794         atkbd->extra = false;
 795 /*
 796  * For known special keyboards we can go ahead and set the correct set.
 797  * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
 798  * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
 799  */
 800 
 801         if (atkbd->translated)
 802                 return 2;
 803 
 804         if (atkbd->id == 0xaca1) {
 805                 param[0] = 3;
 806                 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
 807                 return 3;
 808         }
 809 
 810         if (allow_extra) {
 811                 param[0] = 0x71;
 812                 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
 813                         atkbd->extra = true;
 814                         return 2;
 815                 }
 816         }
 817 
 818         if (atkbd_terminal) {
 819                 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MB);
 820                 return 3;
 821         }
 822 
 823         if (target_set != 3)
 824                 return 2;
 825 
 826         if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
 827                 atkbd->id = param[0] << 8 | param[1];
 828                 return 2;
 829         }
 830 
 831         param[0] = 3;
 832         if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
 833                 return 2;
 834 
 835         param[0] = 0;
 836         if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
 837                 return 2;
 838 
 839         if (param[0] != 3) {
 840                 param[0] = 2;
 841                 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
 842                         return 2;
 843         }
 844 
 845         ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
 846 
 847         return 3;
 848 }
 849 
 850 static int atkbd_reset_state(struct atkbd *atkbd)
 851 {
 852         struct ps2dev *ps2dev = &atkbd->ps2dev;
 853         unsigned char param[1];
 854 
 855 /*
 856  * Set the LEDs to a predefined state (all off).
 857  */
 858 
 859         param[0] = 0;
 860         if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
 861                 return -1;
 862 
 863 /*
 864  * Set autorepeat to fastest possible.
 865  */
 866 
 867         param[0] = 0;
 868         if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
 869                 return -1;
 870 
 871         return 0;
 872 }
 873 
 874 /*
 875  * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
 876  * reboot.
 877  */
 878 
 879 static void atkbd_cleanup(struct serio *serio)
 880 {
 881         struct atkbd *atkbd = serio_get_drvdata(serio);
 882 
 883         atkbd_disable(atkbd);
 884         ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF);
 885 }
 886 
 887 
 888 /*
 889  * atkbd_disconnect() closes and frees.
 890  */
 891 
 892 static void atkbd_disconnect(struct serio *serio)
 893 {
 894         struct atkbd *atkbd = serio_get_drvdata(serio);
 895 
 896         sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
 897 
 898         atkbd_disable(atkbd);
 899 
 900         input_unregister_device(atkbd->dev);
 901 
 902         /*
 903          * Make sure we don't have a command in flight.
 904          * Note that since atkbd->enabled is false event work will keep
 905          * rescheduling itself until it gets canceled and will not try
 906          * accessing freed input device or serio port.
 907          */
 908         cancel_delayed_work_sync(&atkbd->event_work);
 909 
 910         serio_close(serio);
 911         serio_set_drvdata(serio, NULL);
 912         kfree(atkbd);
 913 }
 914 
 915 /*
 916  * generate release events for the keycodes given in data
 917  */
 918 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd,
 919                                                 const void *data)
 920 {
 921         const unsigned int *keys = data;
 922         unsigned int i;
 923 
 924         if (atkbd->set == 2)
 925                 for (i = 0; keys[i] != -1U; i++)
 926                         __set_bit(keys[i], atkbd->force_release_mask);
 927 }
 928 
 929 /*
 930  * Most special keys (Fn+F?) on Dell laptops do not generate release
 931  * events so we have to do it ourselves.
 932  */
 933 static unsigned int atkbd_dell_laptop_forced_release_keys[] = {
 934         0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U
 935 };
 936 
 937 /*
 938  * Perform fixup for HP system that doesn't generate release
 939  * for its video switch
 940  */
 941 static unsigned int atkbd_hp_forced_release_keys[] = {
 942         0x94, -1U
 943 };
 944 
 945 /*
 946  * Samsung NC10,NC20 with Fn+F? key release not working
 947  */
 948 static unsigned int atkbd_samsung_forced_release_keys[] = {
 949         0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U
 950 };
 951 
 952 /*
 953  * Amilo Pi 3525 key release for Fn+Volume keys not working
 954  */
 955 static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = {
 956         0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U
 957 };
 958 
 959 /*
 960  * Amilo Xi 3650 key release for light touch bar not working
 961  */
 962 static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = {
 963         0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U
 964 };
 965 
 966 /*
 967  * Soltech TA12 system with broken key release on volume keys and mute key
 968  */
 969 static unsigned int atkdb_soltech_ta12_forced_release_keys[] = {
 970         0xa0, 0xae, 0xb0, -1U
 971 };
 972 
 973 /*
 974  * Many notebooks don't send key release event for volume up/down
 975  * keys, with key list below common among them
 976  */
 977 static unsigned int atkbd_volume_forced_release_keys[] = {
 978         0xae, 0xb0, -1U
 979 };
 980 
 981 /*
 982  * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas
 983  * they should be generating e4-e6 (0x80 | code).
 984  */
 985 static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd,
 986                                                     unsigned int code)
 987 {
 988         if (atkbd->translated && atkbd->emul == 1 &&
 989             (code == 0x64 || code == 0x65 || code == 0x66)) {
 990                 atkbd->emul = 0;
 991                 code |= 0x80;
 992         }
 993 
 994         return code;
 995 }
 996 
 997 /*
 998  * atkbd_set_keycode_table() initializes keyboard's keycode table
 999  * according to the selected scancode set
1000  */
1001 
1002 static void atkbd_set_keycode_table(struct atkbd *atkbd)
1003 {
1004         unsigned int scancode;
1005         int i, j;
1006 
1007         memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
1008         bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
1009 
1010         if (atkbd->translated) {
1011                 for (i = 0; i < 128; i++) {
1012                         scancode = atkbd_unxlate_table[i];
1013                         atkbd->keycode[i] = atkbd_set2_keycode[scancode];
1014                         atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
1015                         if (atkbd->scroll)
1016                                 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
1017                                         if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
1018                                                 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
1019                 }
1020         } else if (atkbd->set == 3) {
1021                 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
1022         } else {
1023                 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
1024 
1025                 if (atkbd->scroll)
1026                         for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
1027                                 scancode = atkbd_scroll_keys[i].set2;
1028                                 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
1029                 }
1030         }
1031 
1032 /*
1033  * HANGEUL and HANJA keys do not send release events so we need to
1034  * generate such events ourselves
1035  */
1036         scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
1037         atkbd->keycode[scancode] = KEY_HANGEUL;
1038         __set_bit(scancode, atkbd->force_release_mask);
1039 
1040         scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
1041         atkbd->keycode[scancode] = KEY_HANJA;
1042         __set_bit(scancode, atkbd->force_release_mask);
1043 
1044 /*
1045  * Perform additional fixups
1046  */
1047         if (atkbd_platform_fixup)
1048                 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data);
1049 }
1050 
1051 /*
1052  * atkbd_set_device_attrs() sets up keyboard's input device structure
1053  */
1054 
1055 static void atkbd_set_device_attrs(struct atkbd *atkbd)
1056 {
1057         struct input_dev *input_dev = atkbd->dev;
1058         int i;
1059 
1060         if (atkbd->extra)
1061                 snprintf(atkbd->name, sizeof(atkbd->name),
1062                          "AT Set 2 Extra keyboard");
1063         else
1064                 snprintf(atkbd->name, sizeof(atkbd->name),
1065                          "AT %s Set %d keyboard",
1066                          atkbd->translated ? "Translated" : "Raw", atkbd->set);
1067 
1068         snprintf(atkbd->phys, sizeof(atkbd->phys),
1069                  "%s/input0", atkbd->ps2dev.serio->phys);
1070 
1071         input_dev->name = atkbd->name;
1072         input_dev->phys = atkbd->phys;
1073         input_dev->id.bustype = BUS_I8042;
1074         input_dev->id.vendor = 0x0001;
1075         input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
1076         input_dev->id.version = atkbd->id;
1077         input_dev->event = atkbd_event;
1078         input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1079 
1080         input_set_drvdata(input_dev, atkbd);
1081 
1082         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
1083                 BIT_MASK(EV_MSC);
1084 
1085         if (atkbd->write) {
1086                 input_dev->evbit[0] |= BIT_MASK(EV_LED);
1087                 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
1088                         BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1089         }
1090 
1091         if (atkbd->extra)
1092                 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
1093                         BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
1094                         BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1095 
1096         if (!atkbd->softrepeat) {
1097                 input_dev->rep[REP_DELAY] = 250;
1098                 input_dev->rep[REP_PERIOD] = 33;
1099         }
1100 
1101         input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
1102                 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1103 
1104         if (atkbd->scroll) {
1105                 input_dev->evbit[0] |= BIT_MASK(EV_REL);
1106                 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
1107                         BIT_MASK(REL_HWHEEL);
1108                 __set_bit(BTN_MIDDLE, input_dev->keybit);
1109         }
1110 
1111         input_dev->keycode = atkbd->keycode;
1112         input_dev->keycodesize = sizeof(unsigned short);
1113         input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1114 
1115         for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) {
1116                 if (atkbd->keycode[i] != KEY_RESERVED &&
1117                     atkbd->keycode[i] != ATKBD_KEY_NULL &&
1118                     atkbd->keycode[i] < ATKBD_SPECIAL) {
1119                         __set_bit(atkbd->keycode[i], input_dev->keybit);
1120                 }
1121         }
1122 }
1123 
1124 /*
1125  * atkbd_connect() is called when the serio module finds an interface
1126  * that isn't handled yet by an appropriate device driver. We check if
1127  * there is an AT keyboard out there and if yes, we register ourselves
1128  * to the input module.
1129  */
1130 
1131 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1132 {
1133         struct atkbd *atkbd;
1134         struct input_dev *dev;
1135         int err = -ENOMEM;
1136 
1137         atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1138         dev = input_allocate_device();
1139         if (!atkbd || !dev)
1140                 goto fail1;
1141 
1142         atkbd->dev = dev;
1143         ps2_init(&atkbd->ps2dev, serio);
1144         INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1145         mutex_init(&atkbd->mutex);
1146 
1147         switch (serio->id.type) {
1148 
1149         case SERIO_8042_XL:
1150                 atkbd->translated = true;
1151                 /* Fall through */
1152 
1153         case SERIO_8042:
1154                 if (serio->write)
1155                         atkbd->write = true;
1156                 break;
1157         }
1158 
1159         atkbd->softraw = atkbd_softraw;
1160         atkbd->softrepeat = atkbd_softrepeat;
1161         atkbd->scroll = atkbd_scroll;
1162 
1163         if (atkbd->softrepeat)
1164                 atkbd->softraw = true;
1165 
1166         serio_set_drvdata(serio, atkbd);
1167 
1168         err = serio_open(serio, drv);
1169         if (err)
1170                 goto fail2;
1171 
1172         if (atkbd->write) {
1173 
1174                 if (atkbd_probe(atkbd)) {
1175                         err = -ENODEV;
1176                         goto fail3;
1177                 }
1178 
1179                 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1180                 atkbd_reset_state(atkbd);
1181 
1182         } else {
1183                 atkbd->set = 2;
1184                 atkbd->id = 0xab00;
1185         }
1186 
1187         atkbd_set_keycode_table(atkbd);
1188         atkbd_set_device_attrs(atkbd);
1189 
1190         err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1191         if (err)
1192                 goto fail3;
1193 
1194         atkbd_enable(atkbd);
1195         if (serio->write)
1196                 atkbd_activate(atkbd);
1197 
1198         err = input_register_device(atkbd->dev);
1199         if (err)
1200                 goto fail4;
1201 
1202         return 0;
1203 
1204  fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1205  fail3: serio_close(serio);
1206  fail2: serio_set_drvdata(serio, NULL);
1207  fail1: input_free_device(dev);
1208         kfree(atkbd);
1209         return err;
1210 }
1211 
1212 /*
1213  * atkbd_reconnect() tries to restore keyboard into a sane state and is
1214  * most likely called on resume.
1215  */
1216 
1217 static int atkbd_reconnect(struct serio *serio)
1218 {
1219         struct atkbd *atkbd = serio_get_drvdata(serio);
1220         struct serio_driver *drv = serio->drv;
1221         int retval = -1;
1222 
1223         if (!atkbd || !drv) {
1224                 dev_dbg(&serio->dev,
1225                         "reconnect request, but serio is disconnected, ignoring...\n");
1226                 return -1;
1227         }
1228 
1229         mutex_lock(&atkbd->mutex);
1230 
1231         atkbd_disable(atkbd);
1232 
1233         if (atkbd->write) {
1234                 if (atkbd_probe(atkbd))
1235                         goto out;
1236 
1237                 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1238                         goto out;
1239 
1240                 /*
1241                  * Restore LED state and repeat rate. While input core
1242                  * will do this for us at resume time reconnect may happen
1243                  * because user requested it via sysfs or simply because
1244                  * keyboard was unplugged and plugged in again so we need
1245                  * to do it ourselves here.
1246                  */
1247                 atkbd_set_leds(atkbd);
1248                 if (!atkbd->softrepeat)
1249                         atkbd_set_repeat_rate(atkbd);
1250 
1251         }
1252 
1253         /*
1254          * Reset our state machine in case reconnect happened in the middle
1255          * of multi-byte scancode.
1256          */
1257         atkbd->xl_bit = 0;
1258         atkbd->emul = 0;
1259 
1260         atkbd_enable(atkbd);
1261         if (atkbd->write)
1262                 atkbd_activate(atkbd);
1263 
1264         retval = 0;
1265 
1266  out:
1267         mutex_unlock(&atkbd->mutex);
1268         return retval;
1269 }
1270 
1271 static const struct serio_device_id atkbd_serio_ids[] = {
1272         {
1273                 .type   = SERIO_8042,
1274                 .proto  = SERIO_ANY,
1275                 .id     = SERIO_ANY,
1276                 .extra  = SERIO_ANY,
1277         },
1278         {
1279                 .type   = SERIO_8042_XL,
1280                 .proto  = SERIO_ANY,
1281                 .id     = SERIO_ANY,
1282                 .extra  = SERIO_ANY,
1283         },
1284         {
1285                 .type   = SERIO_RS232,
1286                 .proto  = SERIO_PS2SER,
1287                 .id     = SERIO_ANY,
1288                 .extra  = SERIO_ANY,
1289         },
1290         { 0 }
1291 };
1292 
1293 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1294 
1295 static struct serio_driver atkbd_drv = {
1296         .driver         = {
1297                 .name   = "atkbd",
1298         },
1299         .description    = DRIVER_DESC,
1300         .id_table       = atkbd_serio_ids,
1301         .interrupt      = atkbd_interrupt,
1302         .connect        = atkbd_connect,
1303         .reconnect      = atkbd_reconnect,
1304         .disconnect     = atkbd_disconnect,
1305         .cleanup        = atkbd_cleanup,
1306 };
1307 
1308 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1309                                 ssize_t (*handler)(struct atkbd *, char *))
1310 {
1311         struct serio *serio = to_serio_port(dev);
1312         struct atkbd *atkbd = serio_get_drvdata(serio);
1313 
1314         return handler(atkbd, buf);
1315 }
1316 
1317 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1318                                 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1319 {
1320         struct serio *serio = to_serio_port(dev);
1321         struct atkbd *atkbd = serio_get_drvdata(serio);
1322         int retval;
1323 
1324         retval = mutex_lock_interruptible(&atkbd->mutex);
1325         if (retval)
1326                 return retval;
1327 
1328         atkbd_disable(atkbd);
1329         retval = handler(atkbd, buf, count);
1330         atkbd_enable(atkbd);
1331 
1332         mutex_unlock(&atkbd->mutex);
1333 
1334         return retval;
1335 }
1336 
1337 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1338 {
1339         return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1340 }
1341 
1342 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1343 {
1344         struct input_dev *old_dev, *new_dev;
1345         unsigned int value;
1346         int err;
1347         bool old_extra;
1348         unsigned char old_set;
1349 
1350         if (!atkbd->write)
1351                 return -EIO;
1352 
1353         err = kstrtouint(buf, 10, &value);
1354         if (err)
1355                 return err;
1356 
1357         if (value > 1)
1358                 return -EINVAL;
1359 
1360         if (atkbd->extra != value) {
1361                 /*
1362                  * Since device's properties will change we need to
1363                  * unregister old device. But allocate and register
1364                  * new one first to make sure we have it.
1365                  */
1366                 old_dev = atkbd->dev;
1367                 old_extra = atkbd->extra;
1368                 old_set = atkbd->set;
1369 
1370                 new_dev = input_allocate_device();
1371                 if (!new_dev)
1372                         return -ENOMEM;
1373 
1374                 atkbd->dev = new_dev;
1375                 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1376                 atkbd_reset_state(atkbd);
1377                 atkbd_activate(atkbd);
1378                 atkbd_set_keycode_table(atkbd);
1379                 atkbd_set_device_attrs(atkbd);
1380 
1381                 err = input_register_device(atkbd->dev);
1382                 if (err) {
1383                         input_free_device(new_dev);
1384 
1385                         atkbd->dev = old_dev;
1386                         atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1387                         atkbd_set_keycode_table(atkbd);
1388                         atkbd_set_device_attrs(atkbd);
1389 
1390                         return err;
1391                 }
1392                 input_unregister_device(old_dev);
1393 
1394         }
1395         return count;
1396 }
1397 
1398 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
1399 {
1400         size_t len = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
1401                                ATKBD_KEYMAP_SIZE, atkbd->force_release_mask);
1402 
1403         buf[len++] = '\n';
1404         buf[len] = '\0';
1405 
1406         return len;
1407 }
1408 
1409 static ssize_t atkbd_set_force_release(struct atkbd *atkbd,
1410                                         const char *buf, size_t count)
1411 {
1412         /* 64 bytes on stack should be acceptable */
1413         DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE);
1414         int err;
1415 
1416         err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE);
1417         if (err)
1418                 return err;
1419 
1420         memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask));
1421         return count;
1422 }
1423 
1424 
1425 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1426 {
1427         return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1428 }
1429 
1430 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1431 {
1432         struct input_dev *old_dev, *new_dev;
1433         unsigned int value;
1434         int err;
1435         bool old_scroll;
1436 
1437         err = kstrtouint(buf, 10, &value);
1438         if (err)
1439                 return err;
1440 
1441         if (value > 1)
1442                 return -EINVAL;
1443 
1444         if (atkbd->scroll != value) {
1445                 old_dev = atkbd->dev;
1446                 old_scroll = atkbd->scroll;
1447 
1448                 new_dev = input_allocate_device();
1449                 if (!new_dev)
1450                         return -ENOMEM;
1451 
1452                 atkbd->dev = new_dev;
1453                 atkbd->scroll = value;
1454                 atkbd_set_keycode_table(atkbd);
1455                 atkbd_set_device_attrs(atkbd);
1456 
1457                 err = input_register_device(atkbd->dev);
1458                 if (err) {
1459                         input_free_device(new_dev);
1460 
1461                         atkbd->scroll = old_scroll;
1462                         atkbd->dev = old_dev;
1463                         atkbd_set_keycode_table(atkbd);
1464                         atkbd_set_device_attrs(atkbd);
1465 
1466                         return err;
1467                 }
1468                 input_unregister_device(old_dev);
1469         }
1470         return count;
1471 }
1472 
1473 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1474 {
1475         return sprintf(buf, "%d\n", atkbd->set);
1476 }
1477 
1478 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1479 {
1480         struct input_dev *old_dev, *new_dev;
1481         unsigned int value;
1482         int err;
1483         unsigned char old_set;
1484         bool old_extra;
1485 
1486         if (!atkbd->write)
1487                 return -EIO;
1488 
1489         err = kstrtouint(buf, 10, &value);
1490         if (err)
1491                 return err;
1492 
1493         if (value != 2 && value != 3)
1494                 return -EINVAL;
1495 
1496         if (atkbd->set != value) {
1497                 old_dev = atkbd->dev;
1498                 old_extra = atkbd->extra;
1499                 old_set = atkbd->set;
1500 
1501                 new_dev = input_allocate_device();
1502                 if (!new_dev)
1503                         return -ENOMEM;
1504 
1505                 atkbd->dev = new_dev;
1506                 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1507                 atkbd_reset_state(atkbd);
1508                 atkbd_activate(atkbd);
1509                 atkbd_set_keycode_table(atkbd);
1510                 atkbd_set_device_attrs(atkbd);
1511 
1512                 err = input_register_device(atkbd->dev);
1513                 if (err) {
1514                         input_free_device(new_dev);
1515 
1516                         atkbd->dev = old_dev;
1517                         atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1518                         atkbd_set_keycode_table(atkbd);
1519                         atkbd_set_device_attrs(atkbd);
1520 
1521                         return err;
1522                 }
1523                 input_unregister_device(old_dev);
1524         }
1525         return count;
1526 }
1527 
1528 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1529 {
1530         return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1531 }
1532 
1533 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1534 {
1535         struct input_dev *old_dev, *new_dev;
1536         unsigned int value;
1537         int err;
1538         bool old_softrepeat, old_softraw;
1539 
1540         if (!atkbd->write)
1541                 return -EIO;
1542 
1543         err = kstrtouint(buf, 10, &value);
1544         if (err)
1545                 return err;
1546 
1547         if (value > 1)
1548                 return -EINVAL;
1549 
1550         if (atkbd->softrepeat != value) {
1551                 old_dev = atkbd->dev;
1552                 old_softrepeat = atkbd->softrepeat;
1553                 old_softraw = atkbd->softraw;
1554 
1555                 new_dev = input_allocate_device();
1556                 if (!new_dev)
1557                         return -ENOMEM;
1558 
1559                 atkbd->dev = new_dev;
1560                 atkbd->softrepeat = value;
1561                 if (atkbd->softrepeat)
1562                         atkbd->softraw = true;
1563                 atkbd_set_device_attrs(atkbd);
1564 
1565                 err = input_register_device(atkbd->dev);
1566                 if (err) {
1567                         input_free_device(new_dev);
1568 
1569                         atkbd->dev = old_dev;
1570                         atkbd->softrepeat = old_softrepeat;
1571                         atkbd->softraw = old_softraw;
1572                         atkbd_set_device_attrs(atkbd);
1573 
1574                         return err;
1575                 }
1576                 input_unregister_device(old_dev);
1577         }
1578         return count;
1579 }
1580 
1581 
1582 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1583 {
1584         return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1585 }
1586 
1587 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1588 {
1589         struct input_dev *old_dev, *new_dev;
1590         unsigned int value;
1591         int err;
1592         bool old_softraw;
1593 
1594         err = kstrtouint(buf, 10, &value);
1595         if (err)
1596                 return err;
1597 
1598         if (value > 1)
1599                 return -EINVAL;
1600 
1601         if (atkbd->softraw != value) {
1602                 old_dev = atkbd->dev;
1603                 old_softraw = atkbd->softraw;
1604 
1605                 new_dev = input_allocate_device();
1606                 if (!new_dev)
1607                         return -ENOMEM;
1608 
1609                 atkbd->dev = new_dev;
1610                 atkbd->softraw = value;
1611                 atkbd_set_device_attrs(atkbd);
1612 
1613                 err = input_register_device(atkbd->dev);
1614                 if (err) {
1615                         input_free_device(new_dev);
1616 
1617                         atkbd->dev = old_dev;
1618                         atkbd->softraw = old_softraw;
1619                         atkbd_set_device_attrs(atkbd);
1620 
1621                         return err;
1622                 }
1623                 input_unregister_device(old_dev);
1624         }
1625         return count;
1626 }
1627 
1628 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1629 {
1630         return sprintf(buf, "%lu\n", atkbd->err_count);
1631 }
1632 
1633 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id)
1634 {
1635         atkbd_platform_fixup = atkbd_apply_forced_release_keylist;
1636         atkbd_platform_fixup_data = id->driver_data;
1637 
1638         return 1;
1639 }
1640 
1641 static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id)
1642 {
1643         atkbd_platform_scancode_fixup = id->driver_data;
1644 
1645         return 1;
1646 }
1647 
1648 static int __init atkbd_deactivate_fixup(const struct dmi_system_id *id)
1649 {
1650         atkbd_skip_deactivate = true;
1651         return 1;
1652 }
1653 
1654 /*
1655  * NOTE: do not add any more "force release" quirks to this table.  The
1656  * task of adjusting list of keys that should be "released" automatically
1657  * by the driver is now delegated to userspace tools, such as udev, so
1658  * submit such quirks there.
1659  */
1660 static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = {
1661         {
1662                 .matches = {
1663                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1664                         DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1665                 },
1666                 .callback = atkbd_setup_forced_release,
1667                 .driver_data = atkbd_dell_laptop_forced_release_keys,
1668         },
1669         {
1670                 .matches = {
1671                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
1672                         DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1673                 },
1674                 .callback = atkbd_setup_forced_release,
1675                 .driver_data = atkbd_dell_laptop_forced_release_keys,
1676         },
1677         {
1678                 .matches = {
1679                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1680                         DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1681                 },
1682                 .callback = atkbd_setup_forced_release,
1683                 .driver_data = atkbd_hp_forced_release_keys,
1684         },
1685         {
1686                 .matches = {
1687                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1688                         DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
1689                 },
1690                 .callback = atkbd_setup_forced_release,
1691                 .driver_data = atkbd_volume_forced_release_keys,
1692         },
1693         {
1694                 .matches = {
1695                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1696                         DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"),
1697                 },
1698                 .callback = atkbd_setup_forced_release,
1699                 .driver_data = atkbd_volume_forced_release_keys,
1700         },
1701         {
1702                 .matches = {
1703                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1704                         DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"),
1705                 },
1706                 .callback = atkbd_setup_forced_release,
1707                 .driver_data = atkbd_volume_forced_release_keys,
1708         },
1709         {
1710                 .matches = {
1711                         DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1712                         DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"),
1713                 },
1714                 .callback = atkbd_setup_forced_release,
1715                 .driver_data = atkbd_volume_forced_release_keys,
1716         },
1717         {
1718                 /* Inventec Symphony */
1719                 .matches = {
1720                         DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1721                         DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1722                 },
1723                 .callback = atkbd_setup_forced_release,
1724                 .driver_data = atkbd_volume_forced_release_keys,
1725         },
1726         {
1727                 /* Samsung NC10 */
1728                 .matches = {
1729                         DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1730                         DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
1731                 },
1732                 .callback = atkbd_setup_forced_release,
1733                 .driver_data = atkbd_samsung_forced_release_keys,
1734         },
1735         {
1736                 /* Samsung NC20 */
1737                 .matches = {
1738                         DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1739                         DMI_MATCH(DMI_PRODUCT_NAME, "NC20"),
1740                 },
1741                 .callback = atkbd_setup_forced_release,
1742                 .driver_data = atkbd_samsung_forced_release_keys,
1743         },
1744         {
1745                 /* Samsung SQ45S70S */
1746                 .matches = {
1747                         DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1748                         DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"),
1749                 },
1750                 .callback = atkbd_setup_forced_release,
1751                 .driver_data = atkbd_samsung_forced_release_keys,
1752         },
1753         {
1754                 /* Fujitsu Amilo PA 1510 */
1755                 .matches = {
1756                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1757                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"),
1758                 },
1759                 .callback = atkbd_setup_forced_release,
1760                 .driver_data = atkbd_volume_forced_release_keys,
1761         },
1762         {
1763                 /* Fujitsu Amilo Pi 3525 */
1764                 .matches = {
1765                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1766                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"),
1767                 },
1768                 .callback = atkbd_setup_forced_release,
1769                 .driver_data = atkbd_amilo_pi3525_forced_release_keys,
1770         },
1771         {
1772                 /* Fujitsu Amilo Xi 3650 */
1773                 .matches = {
1774                         DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1775                         DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"),
1776                 },
1777                 .callback = atkbd_setup_forced_release,
1778                 .driver_data = atkbd_amilo_xi3650_forced_release_keys,
1779         },
1780         {
1781                 .matches = {
1782                         DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"),
1783                         DMI_MATCH(DMI_PRODUCT_NAME, "TA12"),
1784                 },
1785                 .callback = atkbd_setup_forced_release,
1786                 .driver_data = atkdb_soltech_ta12_forced_release_keys,
1787         },
1788         {
1789                 /* OQO Model 01+ */
1790                 .matches = {
1791                         DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
1792                         DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
1793                 },
1794                 .callback = atkbd_setup_scancode_fixup,
1795                 .driver_data = atkbd_oqo_01plus_scancode_fixup,
1796         },
1797         {
1798                 .matches = {
1799                         DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
1800                 },
1801                 .callback = atkbd_deactivate_fixup,
1802         },
1803         { }
1804 };
1805 
1806 static int __init atkbd_init(void)
1807 {
1808         dmi_check_system(atkbd_dmi_quirk_table);
1809 
1810         return serio_register_driver(&atkbd_drv);
1811 }
1812 
1813 static void __exit atkbd_exit(void)
1814 {
1815         serio_unregister_driver(&atkbd_drv);
1816 }
1817 
1818 module_init(atkbd_init);
1819 module_exit(atkbd_exit);
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/input/keyboard/atkbd.c

DEFINITIONS
