lkkbd.c 17 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * Copyright (C) 2004 by Jan-Benedict Glaw <jbglaw@lug-owl.de>
  4. */
  5. /*
  6. * LK keyboard driver for Linux, based on sunkbd.c (C) by Vojtech Pavlik
  7. */
  8. /*
  9. * DEC LK201 and LK401 keyboard driver for Linux (primary for DECstations
  10. * and VAXstations, but can also be used on any standard RS232 with an
  11. * adaptor).
  12. *
  13. * DISCLAIMER: This works for _me_. If you break anything by using the
  14. * information given below, I will _not_ be liable!
  15. *
  16. * RJ10 pinout: To DE9: Or DB25:
  17. * 1 - RxD <----> Pin 3 (TxD) <-> Pin 2 (TxD)
  18. * 2 - GND <----> Pin 5 (GND) <-> Pin 7 (GND)
  19. * 4 - TxD <----> Pin 2 (RxD) <-> Pin 3 (RxD)
  20. * 3 - +12V (from HDD drive connector), DON'T connect to DE9 or DB25!!!
  21. *
  22. * Pin numbers for DE9 and DB25 are noted on the plug (quite small:). For
  23. * RJ10, it's like this:
  24. *
  25. * __=__ Hold the plug in front of you, cable downwards,
  26. * /___/| nose is hidden behind the plug. Now, pin 1 is at
  27. * |1234|| the left side, pin 4 at the right and 2 and 3 are
  28. * |IIII|| in between, of course:)
  29. * | ||
  30. * |____|/
  31. * || So the adaptor consists of three connected cables
  32. * || for data transmission (RxD and TxD) and signal ground.
  33. * Additionally, you have to get +12V from somewhere.
  34. * Most easily, you'll get that from a floppy or HDD power connector.
  35. * It's the yellow cable there (black is ground and red is +5V).
  36. *
  37. * The keyboard and all the commands it understands are documented in
  38. * "VCB02 Video Subsystem - Technical Manual", EK-104AA-TM-001. This
  39. * document is LK201 specific, but LK401 is mostly compatible. It comes
  40. * up in LK201 mode and doesn't report any of the additional keys it
  41. * has. These need to be switched on with the LK_CMD_ENABLE_LK401
  42. * command. You'll find this document (scanned .pdf file) on MANX,
  43. * a search engine specific to DEC documentation. Try
  44. * http://www.vt100.net/manx/details?pn=EK-104AA-TM-001;id=21;cp=1
  45. */
  46. /*
  47. */
  48. #include <linux/delay.h>
  49. #include <linux/slab.h>
  50. #include <linux/module.h>
  51. #include <linux/interrupt.h>
  52. #include <linux/input.h>
  53. #include <linux/serio.h>
  54. #include <linux/workqueue.h>
  55. #define DRIVER_DESC "LK keyboard driver"
  56. MODULE_AUTHOR("Jan-Benedict Glaw <jbglaw@lug-owl.de>");
  57. MODULE_DESCRIPTION(DRIVER_DESC);
  58. MODULE_LICENSE("GPL");
  59. /*
  60. * Known parameters:
  61. * bell_volume
  62. * keyclick_volume
  63. * ctrlclick_volume
  64. *
  65. * Please notice that there's not yet an API to set these at runtime.
  66. */
  67. static int bell_volume = 100; /* % */
  68. module_param(bell_volume, int, 0);
  69. MODULE_PARM_DESC(bell_volume, "Bell volume (in %). default is 100%");
  70. static int keyclick_volume = 100; /* % */
  71. module_param(keyclick_volume, int, 0);
  72. MODULE_PARM_DESC(keyclick_volume, "Keyclick volume (in %), default is 100%");
  73. static int ctrlclick_volume = 100; /* % */
  74. module_param(ctrlclick_volume, int, 0);
  75. MODULE_PARM_DESC(ctrlclick_volume, "Ctrlclick volume (in %), default is 100%");
  76. static int lk201_compose_is_alt;
  77. module_param(lk201_compose_is_alt, int, 0);
  78. MODULE_PARM_DESC(lk201_compose_is_alt,
  79. "If set non-zero, LK201' Compose key will act as an Alt key");
  80. #undef LKKBD_DEBUG
  81. #ifdef LKKBD_DEBUG
  82. #define DBG(x...) printk(x)
  83. #else
  84. #define DBG(x...) do {} while (0)
  85. #endif
  86. /* LED control */
  87. #define LK_LED_WAIT 0x81
  88. #define LK_LED_COMPOSE 0x82
  89. #define LK_LED_SHIFTLOCK 0x84
  90. #define LK_LED_SCROLLLOCK 0x88
  91. #define LK_CMD_LED_ON 0x13
  92. #define LK_CMD_LED_OFF 0x11
  93. /* Mode control */
  94. #define LK_MODE_DOWN 0x80
  95. #define LK_MODE_AUTODOWN 0x82
  96. #define LK_MODE_UPDOWN 0x86
  97. #define LK_CMD_SET_MODE(mode, div) ((mode) | ((div) << 3))
  98. /* Misc commands */
  99. #define LK_CMD_ENABLE_KEYCLICK 0x1b
  100. #define LK_CMD_DISABLE_KEYCLICK 0x99
  101. #define LK_CMD_DISABLE_BELL 0xa1
  102. #define LK_CMD_SOUND_BELL 0xa7
  103. #define LK_CMD_ENABLE_BELL 0x23
  104. #define LK_CMD_DISABLE_CTRCLICK 0xb9
  105. #define LK_CMD_ENABLE_CTRCLICK 0xbb
  106. #define LK_CMD_SET_DEFAULTS 0xd3
  107. #define LK_CMD_POWERCYCLE_RESET 0xfd
  108. #define LK_CMD_ENABLE_LK401 0xe9
  109. #define LK_CMD_REQUEST_ID 0xab
  110. /* Misc responses from keyboard */
  111. #define LK_STUCK_KEY 0x3d
  112. #define LK_SELFTEST_FAILED 0x3e
  113. #define LK_ALL_KEYS_UP 0xb3
  114. #define LK_METRONOME 0xb4
  115. #define LK_OUTPUT_ERROR 0xb5
  116. #define LK_INPUT_ERROR 0xb6
  117. #define LK_KBD_LOCKED 0xb7
  118. #define LK_KBD_TEST_MODE_ACK 0xb8
  119. #define LK_PREFIX_KEY_DOWN 0xb9
  120. #define LK_MODE_CHANGE_ACK 0xba
  121. #define LK_RESPONSE_RESERVED 0xbb
  122. #define LK_NUM_KEYCODES 256
  123. #define LK_NUM_IGNORE_BYTES 6
  124. static unsigned short lkkbd_keycode[LK_NUM_KEYCODES] = {
  125. [0x56] = KEY_F1,
  126. [0x57] = KEY_F2,
  127. [0x58] = KEY_F3,
  128. [0x59] = KEY_F4,
  129. [0x5a] = KEY_F5,
  130. [0x64] = KEY_F6,
  131. [0x65] = KEY_F7,
  132. [0x66] = KEY_F8,
  133. [0x67] = KEY_F9,
  134. [0x68] = KEY_F10,
  135. [0x71] = KEY_F11,
  136. [0x72] = KEY_F12,
  137. [0x73] = KEY_F13,
  138. [0x74] = KEY_F14,
  139. [0x7c] = KEY_F15,
  140. [0x7d] = KEY_F16,
  141. [0x80] = KEY_F17,
  142. [0x81] = KEY_F18,
  143. [0x82] = KEY_F19,
  144. [0x83] = KEY_F20,
  145. [0x8a] = KEY_FIND,
  146. [0x8b] = KEY_INSERT,
  147. [0x8c] = KEY_DELETE,
  148. [0x8d] = KEY_SELECT,
  149. [0x8e] = KEY_PAGEUP,
  150. [0x8f] = KEY_PAGEDOWN,
  151. [0x92] = KEY_KP0,
  152. [0x94] = KEY_KPDOT,
  153. [0x95] = KEY_KPENTER,
  154. [0x96] = KEY_KP1,
  155. [0x97] = KEY_KP2,
  156. [0x98] = KEY_KP3,
  157. [0x99] = KEY_KP4,
  158. [0x9a] = KEY_KP5,
  159. [0x9b] = KEY_KP6,
  160. [0x9c] = KEY_KPCOMMA,
  161. [0x9d] = KEY_KP7,
  162. [0x9e] = KEY_KP8,
  163. [0x9f] = KEY_KP9,
  164. [0xa0] = KEY_KPMINUS,
  165. [0xa1] = KEY_PROG1,
  166. [0xa2] = KEY_PROG2,
  167. [0xa3] = KEY_PROG3,
  168. [0xa4] = KEY_PROG4,
  169. [0xa7] = KEY_LEFT,
  170. [0xa8] = KEY_RIGHT,
  171. [0xa9] = KEY_DOWN,
  172. [0xaa] = KEY_UP,
  173. [0xab] = KEY_RIGHTSHIFT,
  174. [0xac] = KEY_LEFTALT,
  175. [0xad] = KEY_COMPOSE, /* Right Compose, that is. */
  176. [0xae] = KEY_LEFTSHIFT, /* Same as KEY_RIGHTSHIFT on LK201 */
  177. [0xaf] = KEY_LEFTCTRL,
  178. [0xb0] = KEY_CAPSLOCK,
  179. [0xb1] = KEY_COMPOSE, /* Left Compose, that is. */
  180. [0xb2] = KEY_RIGHTALT,
  181. [0xbc] = KEY_BACKSPACE,
  182. [0xbd] = KEY_ENTER,
  183. [0xbe] = KEY_TAB,
  184. [0xbf] = KEY_ESC,
  185. [0xc0] = KEY_1,
  186. [0xc1] = KEY_Q,
  187. [0xc2] = KEY_A,
  188. [0xc3] = KEY_Z,
  189. [0xc5] = KEY_2,
  190. [0xc6] = KEY_W,
  191. [0xc7] = KEY_S,
  192. [0xc8] = KEY_X,
  193. [0xc9] = KEY_102ND,
  194. [0xcb] = KEY_3,
  195. [0xcc] = KEY_E,
  196. [0xcd] = KEY_D,
  197. [0xce] = KEY_C,
  198. [0xd0] = KEY_4,
  199. [0xd1] = KEY_R,
  200. [0xd2] = KEY_F,
  201. [0xd3] = KEY_V,
  202. [0xd4] = KEY_SPACE,
  203. [0xd6] = KEY_5,
  204. [0xd7] = KEY_T,
  205. [0xd8] = KEY_G,
  206. [0xd9] = KEY_B,
  207. [0xdb] = KEY_6,
  208. [0xdc] = KEY_Y,
  209. [0xdd] = KEY_H,
  210. [0xde] = KEY_N,
  211. [0xe0] = KEY_7,
  212. [0xe1] = KEY_U,
  213. [0xe2] = KEY_J,
  214. [0xe3] = KEY_M,
  215. [0xe5] = KEY_8,
  216. [0xe6] = KEY_I,
  217. [0xe7] = KEY_K,
  218. [0xe8] = KEY_COMMA,
  219. [0xea] = KEY_9,
  220. [0xeb] = KEY_O,
  221. [0xec] = KEY_L,
  222. [0xed] = KEY_DOT,
  223. [0xef] = KEY_0,
  224. [0xf0] = KEY_P,
  225. [0xf2] = KEY_SEMICOLON,
  226. [0xf3] = KEY_SLASH,
  227. [0xf5] = KEY_EQUAL,
  228. [0xf6] = KEY_RIGHTBRACE,
  229. [0xf7] = KEY_BACKSLASH,
  230. [0xf9] = KEY_MINUS,
  231. [0xfa] = KEY_LEFTBRACE,
  232. [0xfb] = KEY_APOSTROPHE,
  233. };
  234. #define CHECK_LED(LK, VAR_ON, VAR_OFF, LED, BITS) do { \
  235. if (test_bit(LED, (LK)->dev->led)) \
  236. VAR_ON |= BITS; \
  237. else \
  238. VAR_OFF |= BITS; \
  239. } while (0)
  240. /*
  241. * Per-keyboard data
  242. */
  243. struct lkkbd {
  244. unsigned short keycode[LK_NUM_KEYCODES];
  245. int ignore_bytes;
  246. unsigned char id[LK_NUM_IGNORE_BYTES];
  247. struct input_dev *dev;
  248. struct serio *serio;
  249. struct work_struct tq;
  250. char name[64];
  251. char phys[32];
  252. char type;
  253. int bell_volume;
  254. int keyclick_volume;
  255. int ctrlclick_volume;
  256. };
  257. #ifdef LKKBD_DEBUG
  258. /*
  259. * Responses from the keyboard and mapping back to their names.
  260. */
  261. static struct {
  262. unsigned char value;
  263. unsigned char *name;
  264. } lk_response[] = {
  265. #define RESPONSE(x) { .value = (x), .name = #x, }
  266. RESPONSE(LK_STUCK_KEY),
  267. RESPONSE(LK_SELFTEST_FAILED),
  268. RESPONSE(LK_ALL_KEYS_UP),
  269. RESPONSE(LK_METRONOME),
  270. RESPONSE(LK_OUTPUT_ERROR),
  271. RESPONSE(LK_INPUT_ERROR),
  272. RESPONSE(LK_KBD_LOCKED),
  273. RESPONSE(LK_KBD_TEST_MODE_ACK),
  274. RESPONSE(LK_PREFIX_KEY_DOWN),
  275. RESPONSE(LK_MODE_CHANGE_ACK),
  276. RESPONSE(LK_RESPONSE_RESERVED),
  277. #undef RESPONSE
  278. };
  279. static unsigned char *response_name(unsigned char value)
  280. {
  281. int i;
  282. for (i = 0; i < ARRAY_SIZE(lk_response); i++)
  283. if (lk_response[i].value == value)
  284. return lk_response[i].name;
  285. return "<unknown>";
  286. }
  287. #endif /* LKKBD_DEBUG */
  288. /*
  289. * Calculate volume parameter byte for a given volume.
  290. */
  291. static unsigned char volume_to_hw(int volume_percent)
  292. {
  293. unsigned char ret = 0;
  294. if (volume_percent < 0)
  295. volume_percent = 0;
  296. if (volume_percent > 100)
  297. volume_percent = 100;
  298. if (volume_percent >= 0)
  299. ret = 7;
  300. if (volume_percent >= 13) /* 12.5 */
  301. ret = 6;
  302. if (volume_percent >= 25)
  303. ret = 5;
  304. if (volume_percent >= 38) /* 37.5 */
  305. ret = 4;
  306. if (volume_percent >= 50)
  307. ret = 3;
  308. if (volume_percent >= 63) /* 62.5 */
  309. ret = 2; /* This is the default volume */
  310. if (volume_percent >= 75)
  311. ret = 1;
  312. if (volume_percent >= 88) /* 87.5 */
  313. ret = 0;
  314. ret |= 0x80;
  315. return ret;
  316. }
  317. static void lkkbd_detection_done(struct lkkbd *lk)
  318. {
  319. int i;
  320. /*
  321. * Reset setting for Compose key. Let Compose be KEY_COMPOSE.
  322. */
  323. lk->keycode[0xb1] = KEY_COMPOSE;
  324. /*
  325. * Print keyboard name and modify Compose=Alt on user's request.
  326. */
  327. switch (lk->id[4]) {
  328. case 1:
  329. strlcpy(lk->name, "DEC LK201 keyboard", sizeof(lk->name));
  330. if (lk201_compose_is_alt)
  331. lk->keycode[0xb1] = KEY_LEFTALT;
  332. break;
  333. case 2:
  334. strlcpy(lk->name, "DEC LK401 keyboard", sizeof(lk->name));
  335. break;
  336. default:
  337. strlcpy(lk->name, "Unknown DEC keyboard", sizeof(lk->name));
  338. printk(KERN_ERR
  339. "lkkbd: keyboard on %s is unknown, please report to "
  340. "Jan-Benedict Glaw <jbglaw@lug-owl.de>\n", lk->phys);
  341. printk(KERN_ERR "lkkbd: keyboard ID'ed as:");
  342. for (i = 0; i < LK_NUM_IGNORE_BYTES; i++)
  343. printk(" 0x%02x", lk->id[i]);
  344. printk("\n");
  345. break;
  346. }
  347. printk(KERN_INFO "lkkbd: keyboard on %s identified as: %s\n",
  348. lk->phys, lk->name);
  349. /*
  350. * Report errors during keyboard boot-up.
  351. */
  352. switch (lk->id[2]) {
  353. case 0x00:
  354. /* All okay */
  355. break;
  356. case LK_STUCK_KEY:
  357. printk(KERN_ERR "lkkbd: Stuck key on keyboard at %s\n",
  358. lk->phys);
  359. break;
  360. case LK_SELFTEST_FAILED:
  361. printk(KERN_ERR
  362. "lkkbd: Selftest failed on keyboard at %s, "
  363. "keyboard may not work properly\n", lk->phys);
  364. break;
  365. default:
  366. printk(KERN_ERR
  367. "lkkbd: Unknown error %02x on keyboard at %s\n",
  368. lk->id[2], lk->phys);
  369. break;
  370. }
  371. /*
  372. * Try to hint user if there's a stuck key.
  373. */
  374. if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0)
  375. printk(KERN_ERR
  376. "Scancode of stuck key is 0x%02x, keycode is 0x%04x\n",
  377. lk->id[3], lk->keycode[lk->id[3]]);
  378. }
  379. /*
  380. * lkkbd_interrupt() is called by the low level driver when a character
  381. * is received.
  382. */
  383. static irqreturn_t lkkbd_interrupt(struct serio *serio,
  384. unsigned char data, unsigned int flags)
  385. {
  386. struct lkkbd *lk = serio_get_drvdata(serio);
  387. struct input_dev *input_dev = lk->dev;
  388. unsigned int keycode;
  389. int i;
  390. DBG(KERN_INFO "Got byte 0x%02x\n", data);
  391. if (lk->ignore_bytes > 0) {
  392. DBG(KERN_INFO "Ignoring a byte on %s\n", lk->name);
  393. lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data;
  394. if (lk->ignore_bytes == 0)
  395. lkkbd_detection_done(lk);
  396. return IRQ_HANDLED;
  397. }
  398. switch (data) {
  399. case LK_ALL_KEYS_UP:
  400. for (i = 0; i < ARRAY_SIZE(lkkbd_keycode); i++)
  401. input_report_key(input_dev, lk->keycode[i], 0);
  402. input_sync(input_dev);
  403. break;
  404. case 0x01:
  405. DBG(KERN_INFO "Got 0x01, scheduling re-initialization\n");
  406. lk->ignore_bytes = LK_NUM_IGNORE_BYTES;
  407. lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data;
  408. schedule_work(&lk->tq);
  409. break;
  410. case LK_METRONOME:
  411. case LK_OUTPUT_ERROR:
  412. case LK_INPUT_ERROR:
  413. case LK_KBD_LOCKED:
  414. case LK_KBD_TEST_MODE_ACK:
  415. case LK_PREFIX_KEY_DOWN:
  416. case LK_MODE_CHANGE_ACK:
  417. case LK_RESPONSE_RESERVED:
  418. DBG(KERN_INFO "Got %s and don't know how to handle...\n",
  419. response_name(data));
  420. break;
  421. default:
  422. keycode = lk->keycode[data];
  423. if (keycode != KEY_RESERVED) {
  424. input_report_key(input_dev, keycode,
  425. !test_bit(keycode, input_dev->key));
  426. input_sync(input_dev);
  427. } else {
  428. printk(KERN_WARNING
  429. "%s: Unknown key with scancode 0x%02x on %s.\n",
  430. __FILE__, data, lk->name);
  431. }
  432. }
  433. return IRQ_HANDLED;
  434. }
  435. static void lkkbd_toggle_leds(struct lkkbd *lk)
  436. {
  437. struct serio *serio = lk->serio;
  438. unsigned char leds_on = 0;
  439. unsigned char leds_off = 0;
  440. CHECK_LED(lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK);
  441. CHECK_LED(lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE);
  442. CHECK_LED(lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK);
  443. CHECK_LED(lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT);
  444. if (leds_on != 0) {
  445. serio_write(serio, LK_CMD_LED_ON);
  446. serio_write(serio, leds_on);
  447. }
  448. if (leds_off != 0) {
  449. serio_write(serio, LK_CMD_LED_OFF);
  450. serio_write(serio, leds_off);
  451. }
  452. }
  453. static void lkkbd_toggle_keyclick(struct lkkbd *lk, bool on)
  454. {
  455. struct serio *serio = lk->serio;
  456. if (on) {
  457. DBG("%s: Activating key clicks\n", __func__);
  458. serio_write(serio, LK_CMD_ENABLE_KEYCLICK);
  459. serio_write(serio, volume_to_hw(lk->keyclick_volume));
  460. serio_write(serio, LK_CMD_ENABLE_CTRCLICK);
  461. serio_write(serio, volume_to_hw(lk->ctrlclick_volume));
  462. } else {
  463. DBG("%s: Deactivating key clicks\n", __func__);
  464. serio_write(serio, LK_CMD_DISABLE_KEYCLICK);
  465. serio_write(serio, LK_CMD_DISABLE_CTRCLICK);
  466. }
  467. }
  468. /*
  469. * lkkbd_event() handles events from the input module.
  470. */
  471. static int lkkbd_event(struct input_dev *dev,
  472. unsigned int type, unsigned int code, int value)
  473. {
  474. struct lkkbd *lk = input_get_drvdata(dev);
  475. switch (type) {
  476. case EV_LED:
  477. lkkbd_toggle_leds(lk);
  478. return 0;
  479. case EV_SND:
  480. switch (code) {
  481. case SND_CLICK:
  482. lkkbd_toggle_keyclick(lk, value);
  483. return 0;
  484. case SND_BELL:
  485. if (value != 0)
  486. serio_write(lk->serio, LK_CMD_SOUND_BELL);
  487. return 0;
  488. }
  489. break;
  490. default:
  491. printk(KERN_ERR "%s(): Got unknown type %d, code %d, value %d\n",
  492. __func__, type, code, value);
  493. }
  494. return -1;
  495. }
  496. /*
  497. * lkkbd_reinit() sets leds and beeps to a state the computer remembers they
  498. * were in.
  499. */
  500. static void lkkbd_reinit(struct work_struct *work)
  501. {
  502. struct lkkbd *lk = container_of(work, struct lkkbd, tq);
  503. int division;
  504. /* Ask for ID */
  505. serio_write(lk->serio, LK_CMD_REQUEST_ID);
  506. /* Reset parameters */
  507. serio_write(lk->serio, LK_CMD_SET_DEFAULTS);
  508. /* Set LEDs */
  509. lkkbd_toggle_leds(lk);
  510. /*
  511. * Try to activate extended LK401 mode. This command will
  512. * only work with a LK401 keyboard and grants access to
  513. * LAlt, RAlt, RCompose and RShift.
  514. */
  515. serio_write(lk->serio, LK_CMD_ENABLE_LK401);
  516. /* Set all keys to UPDOWN mode */
  517. for (division = 1; division <= 14; division++)
  518. serio_write(lk->serio,
  519. LK_CMD_SET_MODE(LK_MODE_UPDOWN, division));
  520. /* Enable bell and set volume */
  521. serio_write(lk->serio, LK_CMD_ENABLE_BELL);
  522. serio_write(lk->serio, volume_to_hw(lk->bell_volume));
  523. /* Enable/disable keyclick (and possibly set volume) */
  524. lkkbd_toggle_keyclick(lk, test_bit(SND_CLICK, lk->dev->snd));
  525. /* Sound the bell if needed */
  526. if (test_bit(SND_BELL, lk->dev->snd))
  527. serio_write(lk->serio, LK_CMD_SOUND_BELL);
  528. }
  529. /*
  530. * lkkbd_connect() probes for a LK keyboard and fills the necessary structures.
  531. */
  532. static int lkkbd_connect(struct serio *serio, struct serio_driver *drv)
  533. {
  534. struct lkkbd *lk;
  535. struct input_dev *input_dev;
  536. int i;
  537. int err;
  538. lk = kzalloc(sizeof(struct lkkbd), GFP_KERNEL);
  539. input_dev = input_allocate_device();
  540. if (!lk || !input_dev) {
  541. err = -ENOMEM;
  542. goto fail1;
  543. }
  544. lk->serio = serio;
  545. lk->dev = input_dev;
  546. INIT_WORK(&lk->tq, lkkbd_reinit);
  547. lk->bell_volume = bell_volume;
  548. lk->keyclick_volume = keyclick_volume;
  549. lk->ctrlclick_volume = ctrlclick_volume;
  550. memcpy(lk->keycode, lkkbd_keycode, sizeof(lk->keycode));
  551. strlcpy(lk->name, "DEC LK keyboard", sizeof(lk->name));
  552. snprintf(lk->phys, sizeof(lk->phys), "%s/input0", serio->phys);
  553. input_dev->name = lk->name;
  554. input_dev->phys = lk->phys;
  555. input_dev->id.bustype = BUS_RS232;
  556. input_dev->id.vendor = SERIO_LKKBD;
  557. input_dev->id.product = 0;
  558. input_dev->id.version = 0x0100;
  559. input_dev->dev.parent = &serio->dev;
  560. input_dev->event = lkkbd_event;
  561. input_set_drvdata(input_dev, lk);
  562. __set_bit(EV_KEY, input_dev->evbit);
  563. __set_bit(EV_LED, input_dev->evbit);
  564. __set_bit(EV_SND, input_dev->evbit);
  565. __set_bit(EV_REP, input_dev->evbit);
  566. __set_bit(LED_CAPSL, input_dev->ledbit);
  567. __set_bit(LED_SLEEP, input_dev->ledbit);
  568. __set_bit(LED_COMPOSE, input_dev->ledbit);
  569. __set_bit(LED_SCROLLL, input_dev->ledbit);
  570. __set_bit(SND_BELL, input_dev->sndbit);
  571. __set_bit(SND_CLICK, input_dev->sndbit);
  572. input_dev->keycode = lk->keycode;
  573. input_dev->keycodesize = sizeof(lk->keycode[0]);
  574. input_dev->keycodemax = ARRAY_SIZE(lk->keycode);
  575. for (i = 0; i < LK_NUM_KEYCODES; i++)
  576. __set_bit(lk->keycode[i], input_dev->keybit);
  577. __clear_bit(KEY_RESERVED, input_dev->keybit);
  578. serio_set_drvdata(serio, lk);
  579. err = serio_open(serio, drv);
  580. if (err)
  581. goto fail2;
  582. err = input_register_device(lk->dev);
  583. if (err)
  584. goto fail3;
  585. serio_write(lk->serio, LK_CMD_POWERCYCLE_RESET);
  586. return 0;
  587. fail3: serio_close(serio);
  588. fail2: serio_set_drvdata(serio, NULL);
  589. fail1: input_free_device(input_dev);
  590. kfree(lk);
  591. return err;
  592. }
  593. /*
  594. * lkkbd_disconnect() unregisters and closes behind us.
  595. */
  596. static void lkkbd_disconnect(struct serio *serio)
  597. {
  598. struct lkkbd *lk = serio_get_drvdata(serio);
  599. input_get_device(lk->dev);
  600. input_unregister_device(lk->dev);
  601. serio_close(serio);
  602. serio_set_drvdata(serio, NULL);
  603. input_put_device(lk->dev);
  604. kfree(lk);
  605. }
  606. static const struct serio_device_id lkkbd_serio_ids[] = {
  607. {
  608. .type = SERIO_RS232,
  609. .proto = SERIO_LKKBD,
  610. .id = SERIO_ANY,
  611. .extra = SERIO_ANY,
  612. },
  613. { 0 }
  614. };
  615. MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids);
  616. static struct serio_driver lkkbd_drv = {
  617. .driver = {
  618. .name = "lkkbd",
  619. },
  620. .description = DRIVER_DESC,
  621. .id_table = lkkbd_serio_ids,
  622. .connect = lkkbd_connect,
  623. .disconnect = lkkbd_disconnect,
  624. .interrupt = lkkbd_interrupt,
  625. };
  626. module_serio_driver(lkkbd_drv);