diff options
Diffstat (limited to 'drivers/input/keyboard/lkkbd.c')
| -rw-r--r-- | drivers/input/keyboard/lkkbd.c | 749 |
1 files changed, 749 insertions, 0 deletions
diff --git a/drivers/input/keyboard/lkkbd.c b/drivers/input/keyboard/lkkbd.c new file mode 100644 index 00000000..fa9bb6d2 --- /dev/null +++ b/drivers/input/keyboard/lkkbd.c @@ -0,0 +1,749 @@ +/* + * Copyright (C) 2004 by Jan-Benedict Glaw <jbglaw@lug-owl.de> + */ + +/* + * LK keyboard driver for Linux, based on sunkbd.c (C) by Vojtech Pavlik + */ + +/* + * DEC LK201 and LK401 keyboard driver for Linux (primary for DECstations + * and VAXstations, but can also be used on any standard RS232 with an + * adaptor). + * + * DISCLAIMER: This works for _me_. If you break anything by using the + * information given below, I will _not_ be liable! + * + * RJ10 pinout: To DE9: Or DB25: + * 1 - RxD <----> Pin 3 (TxD) <-> Pin 2 (TxD) + * 2 - GND <----> Pin 5 (GND) <-> Pin 7 (GND) + * 4 - TxD <----> Pin 2 (RxD) <-> Pin 3 (RxD) + * 3 - +12V (from HDD drive connector), DON'T connect to DE9 or DB25!!! + * + * Pin numbers for DE9 and DB25 are noted on the plug (quite small:). For + * RJ10, it's like this: + * + * __=__ Hold the plug in front of you, cable downwards, + * /___/| nose is hidden behind the plug. Now, pin 1 is at + * |1234|| the left side, pin 4 at the right and 2 and 3 are + * |IIII|| in between, of course:) + * | || + * |____|/ + * || So the adaptor consists of three connected cables + * || for data transmission (RxD and TxD) and signal ground. + * Additionally, you have to get +12V from somewhere. + * Most easily, you'll get that from a floppy or HDD power connector. + * It's the yellow cable there (black is ground and red is +5V). + * + * The keyboard and all the commands it understands are documented in + * "VCB02 Video Subsystem - Technical Manual", EK-104AA-TM-001. This + * document is LK201 specific, but LK401 is mostly compatible. It comes + * up in LK201 mode and doesn't report any of the additional keys it + * has. These need to be switched on with the LK_CMD_ENABLE_LK401 + * command. You'll find this document (scanned .pdf file) on MANX, + * a search engine specific to DEC documentation. Try + * http://www.vt100.net/manx/details?pn=EK-104AA-TM-001;id=21;cp=1 + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/input.h> +#include <linux/serio.h> +#include <linux/workqueue.h> + +#define DRIVER_DESC "LK keyboard driver" + +MODULE_AUTHOR("Jan-Benedict Glaw <jbglaw@lug-owl.de>"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/* + * Known parameters: + * bell_volume + * keyclick_volume + * ctrlclick_volume + * + * Please notice that there's not yet an API to set these at runtime. + */ +static int bell_volume = 100; /* % */ +module_param(bell_volume, int, 0); +MODULE_PARM_DESC(bell_volume, "Bell volume (in %). default is 100%"); + +static int keyclick_volume = 100; /* % */ +module_param(keyclick_volume, int, 0); +MODULE_PARM_DESC(keyclick_volume, "Keyclick volume (in %), default is 100%"); + +static int ctrlclick_volume = 100; /* % */ +module_param(ctrlclick_volume, int, 0); +MODULE_PARM_DESC(ctrlclick_volume, "Ctrlclick volume (in %), default is 100%"); + +static int lk201_compose_is_alt; +module_param(lk201_compose_is_alt, int, 0); +MODULE_PARM_DESC(lk201_compose_is_alt, + "If set non-zero, LK201' Compose key will act as an Alt key"); + + + +#undef LKKBD_DEBUG +#ifdef LKKBD_DEBUG +#define DBG(x...) printk(x) +#else +#define DBG(x...) do {} while (0) +#endif + +/* LED control */ +#define LK_LED_WAIT 0x81 +#define LK_LED_COMPOSE 0x82 +#define LK_LED_SHIFTLOCK 0x84 +#define LK_LED_SCROLLLOCK 0x88 +#define LK_CMD_LED_ON 0x13 +#define LK_CMD_LED_OFF 0x11 + +/* Mode control */ +#define LK_MODE_DOWN 0x80 +#define LK_MODE_AUTODOWN 0x82 +#define LK_MODE_UPDOWN 0x86 +#define LK_CMD_SET_MODE(mode, div) ((mode) | ((div) << 3)) + +/* Misc commands */ +#define LK_CMD_ENABLE_KEYCLICK 0x1b +#define LK_CMD_DISABLE_KEYCLICK 0x99 +#define LK_CMD_DISABLE_BELL 0xa1 +#define LK_CMD_SOUND_BELL 0xa7 +#define LK_CMD_ENABLE_BELL 0x23 +#define LK_CMD_DISABLE_CTRCLICK 0xb9 +#define LK_CMD_ENABLE_CTRCLICK 0xbb +#define LK_CMD_SET_DEFAULTS 0xd3 +#define LK_CMD_POWERCYCLE_RESET 0xfd +#define LK_CMD_ENABLE_LK401 0xe9 +#define LK_CMD_REQUEST_ID 0xab + +/* Misc responses from keyboard */ +#define LK_STUCK_KEY 0x3d +#define LK_SELFTEST_FAILED 0x3e +#define LK_ALL_KEYS_UP 0xb3 +#define LK_METRONOME 0xb4 +#define LK_OUTPUT_ERROR 0xb5 +#define LK_INPUT_ERROR 0xb6 +#define LK_KBD_LOCKED 0xb7 +#define LK_KBD_TEST_MODE_ACK 0xb8 +#define LK_PREFIX_KEY_DOWN 0xb9 +#define LK_MODE_CHANGE_ACK 0xba +#define LK_RESPONSE_RESERVED 0xbb + +#define LK_NUM_KEYCODES 256 +#define LK_NUM_IGNORE_BYTES 6 + +static unsigned short lkkbd_keycode[LK_NUM_KEYCODES] = { + [0x56] = KEY_F1, + [0x57] = KEY_F2, + [0x58] = KEY_F3, + [0x59] = KEY_F4, + [0x5a] = KEY_F5, + [0x64] = KEY_F6, + [0x65] = KEY_F7, + [0x66] = KEY_F8, + [0x67] = KEY_F9, + [0x68] = KEY_F10, + [0x71] = KEY_F11, + [0x72] = KEY_F12, + [0x73] = KEY_F13, + [0x74] = KEY_F14, + [0x7c] = KEY_F15, + [0x7d] = KEY_F16, + [0x80] = KEY_F17, + [0x81] = KEY_F18, + [0x82] = KEY_F19, + [0x83] = KEY_F20, + [0x8a] = KEY_FIND, + [0x8b] = KEY_INSERT, + [0x8c] = KEY_DELETE, + [0x8d] = KEY_SELECT, + [0x8e] = KEY_PAGEUP, + [0x8f] = KEY_PAGEDOWN, + [0x92] = KEY_KP0, + [0x94] = KEY_KPDOT, + [0x95] = KEY_KPENTER, + [0x96] = KEY_KP1, + [0x97] = KEY_KP2, + [0x98] = KEY_KP3, + [0x99] = KEY_KP4, + [0x9a] = KEY_KP5, + [0x9b] = KEY_KP6, + [0x9c] = KEY_KPCOMMA, + [0x9d] = KEY_KP7, + [0x9e] = KEY_KP8, + [0x9f] = KEY_KP9, + [0xa0] = KEY_KPMINUS, + [0xa1] = KEY_PROG1, + [0xa2] = KEY_PROG2, + [0xa3] = KEY_PROG3, + [0xa4] = KEY_PROG4, + [0xa7] = KEY_LEFT, + [0xa8] = KEY_RIGHT, + [0xa9] = KEY_DOWN, + [0xaa] = KEY_UP, + [0xab] = KEY_RIGHTSHIFT, + [0xac] = KEY_LEFTALT, + [0xad] = KEY_COMPOSE, /* Right Compose, that is. */ + [0xae] = KEY_LEFTSHIFT, /* Same as KEY_RIGHTSHIFT on LK201 */ + [0xaf] = KEY_LEFTCTRL, + [0xb0] = KEY_CAPSLOCK, + [0xb1] = KEY_COMPOSE, /* Left Compose, that is. */ + [0xb2] = KEY_RIGHTALT, + [0xbc] = KEY_BACKSPACE, + [0xbd] = KEY_ENTER, + [0xbe] = KEY_TAB, + [0xbf] = KEY_ESC, + [0xc0] = KEY_1, + [0xc1] = KEY_Q, + [0xc2] = KEY_A, + [0xc3] = KEY_Z, + [0xc5] = KEY_2, + [0xc6] = KEY_W, + [0xc7] = KEY_S, + [0xc8] = KEY_X, + [0xc9] = KEY_102ND, + [0xcb] = KEY_3, + [0xcc] = KEY_E, + [0xcd] = KEY_D, + [0xce] = KEY_C, + [0xd0] = KEY_4, + [0xd1] = KEY_R, + [0xd2] = KEY_F, + [0xd3] = KEY_V, + [0xd4] = KEY_SPACE, + [0xd6] = KEY_5, + [0xd7] = KEY_T, + [0xd8] = KEY_G, + [0xd9] = KEY_B, + [0xdb] = KEY_6, + [0xdc] = KEY_Y, + [0xdd] = KEY_H, + [0xde] = KEY_N, + [0xe0] = KEY_7, + [0xe1] = KEY_U, + [0xe2] = KEY_J, + [0xe3] = KEY_M, + [0xe5] = KEY_8, + [0xe6] = KEY_I, + [0xe7] = KEY_K, + [0xe8] = KEY_COMMA, + [0xea] = KEY_9, + [0xeb] = KEY_O, + [0xec] = KEY_L, + [0xed] = KEY_DOT, + [0xef] = KEY_0, + [0xf0] = KEY_P, + [0xf2] = KEY_SEMICOLON, + [0xf3] = KEY_SLASH, + [0xf5] = KEY_EQUAL, + [0xf6] = KEY_RIGHTBRACE, + [0xf7] = KEY_BACKSLASH, + [0xf9] = KEY_MINUS, + [0xfa] = KEY_LEFTBRACE, + [0xfb] = KEY_APOSTROPHE, +}; + +#define CHECK_LED(LK, VAR_ON, VAR_OFF, LED, BITS) do { \ + if (test_bit(LED, (LK)->dev->led)) \ + VAR_ON |= BITS; \ + else \ + VAR_OFF |= BITS; \ + } while (0) + +/* + * Per-keyboard data + */ +struct lkkbd { + unsigned short keycode[LK_NUM_KEYCODES]; + int ignore_bytes; + unsigned char id[LK_NUM_IGNORE_BYTES]; + struct input_dev *dev; + struct serio *serio; + struct work_struct tq; + char name[64]; + char phys[32]; + char type; + int bell_volume; + int keyclick_volume; + int ctrlclick_volume; +}; + +#ifdef LKKBD_DEBUG +/* + * Responses from the keyboard and mapping back to their names. + */ +static struct { + unsigned char value; + unsigned char *name; +} lk_response[] = { +#define RESPONSE(x) { .value = (x), .name = #x, } + RESPONSE(LK_STUCK_KEY), + RESPONSE(LK_SELFTEST_FAILED), + RESPONSE(LK_ALL_KEYS_UP), + RESPONSE(LK_METRONOME), + RESPONSE(LK_OUTPUT_ERROR), + RESPONSE(LK_INPUT_ERROR), + RESPONSE(LK_KBD_LOCKED), + RESPONSE(LK_KBD_TEST_MODE_ACK), + RESPONSE(LK_PREFIX_KEY_DOWN), + RESPONSE(LK_MODE_CHANGE_ACK), + RESPONSE(LK_RESPONSE_RESERVED), +#undef RESPONSE +}; + +static unsigned char *response_name(unsigned char value) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(lk_response); i++) + if (lk_response[i].value == value) + return lk_response[i].name; + + return "<unknown>"; +} +#endif /* LKKBD_DEBUG */ + +/* + * Calculate volume parameter byte for a given volume. + */ +static unsigned char volume_to_hw(int volume_percent) +{ + unsigned char ret = 0; + + if (volume_percent < 0) + volume_percent = 0; + if (volume_percent > 100) + volume_percent = 100; + + if (volume_percent >= 0) + ret = 7; + if (volume_percent >= 13) /* 12.5 */ + ret = 6; + if (volume_percent >= 25) + ret = 5; + if (volume_percent >= 38) /* 37.5 */ + ret = 4; + if (volume_percent >= 50) + ret = 3; + if (volume_percent >= 63) /* 62.5 */ + ret = 2; /* This is the default volume */ + if (volume_percent >= 75) + ret = 1; + if (volume_percent >= 88) /* 87.5 */ + ret = 0; + + ret |= 0x80; + + return ret; +} + +static void lkkbd_detection_done(struct lkkbd *lk) +{ + int i; + + /* + * Reset setting for Compose key. Let Compose be KEY_COMPOSE. + */ + lk->keycode[0xb1] = KEY_COMPOSE; + + /* + * Print keyboard name and modify Compose=Alt on user's request. + */ + switch (lk->id[4]) { + case 1: + strlcpy(lk->name, "DEC LK201 keyboard", sizeof(lk->name)); + + if (lk201_compose_is_alt) + lk->keycode[0xb1] = KEY_LEFTALT; + break; + + case 2: + strlcpy(lk->name, "DEC LK401 keyboard", sizeof(lk->name)); + break; + + default: + strlcpy(lk->name, "Unknown DEC keyboard", sizeof(lk->name)); + printk(KERN_ERR + "lkkbd: keyboard on %s is unknown, please report to " + "Jan-Benedict Glaw <jbglaw@lug-owl.de>\n", lk->phys); + printk(KERN_ERR "lkkbd: keyboard ID'ed as:"); + for (i = 0; i < LK_NUM_IGNORE_BYTES; i++) + printk(" 0x%02x", lk->id[i]); + printk("\n"); + break; + } + + printk(KERN_INFO "lkkbd: keyboard on %s identified as: %s\n", + lk->phys, lk->name); + + /* + * Report errors during keyboard boot-up. + */ + switch (lk->id[2]) { + case 0x00: + /* All okay */ + break; + + case LK_STUCK_KEY: + printk(KERN_ERR "lkkbd: Stuck key on keyboard at %s\n", + lk->phys); + break; + + case LK_SELFTEST_FAILED: + printk(KERN_ERR + "lkkbd: Selftest failed on keyboard at %s, " + "keyboard may not work properly\n", lk->phys); + break; + + default: + printk(KERN_ERR + "lkkbd: Unknown error %02x on keyboard at %s\n", + lk->id[2], lk->phys); + break; + } + + /* + * Try to hint user if there's a stuck key. + */ + if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0) + printk(KERN_ERR + "Scancode of stuck key is 0x%02x, keycode is 0x%04x\n", + lk->id[3], lk->keycode[lk->id[3]]); +} + +/* + * lkkbd_interrupt() is called by the low level driver when a character + * is received. + */ +static irqreturn_t lkkbd_interrupt(struct serio *serio, + unsigned char data, unsigned int flags) +{ + struct lkkbd *lk = serio_get_drvdata(serio); + struct input_dev *input_dev = lk->dev; + unsigned int keycode; + int i; + + DBG(KERN_INFO "Got byte 0x%02x\n", data); + + if (lk->ignore_bytes > 0) { + DBG(KERN_INFO "Ignoring a byte on %s\n", lk->name); + lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; + + if (lk->ignore_bytes == 0) + lkkbd_detection_done(lk); + + return IRQ_HANDLED; + } + + switch (data) { + case LK_ALL_KEYS_UP: + for (i = 0; i < ARRAY_SIZE(lkkbd_keycode); i++) + input_report_key(input_dev, lk->keycode[i], 0); + input_sync(input_dev); + break; + + case 0x01: + DBG(KERN_INFO "Got 0x01, scheduling re-initialization\n"); + lk->ignore_bytes = LK_NUM_IGNORE_BYTES; + lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; + schedule_work(&lk->tq); + break; + + case LK_METRONOME: + case LK_OUTPUT_ERROR: + case LK_INPUT_ERROR: + case LK_KBD_LOCKED: + case LK_KBD_TEST_MODE_ACK: + case LK_PREFIX_KEY_DOWN: + case LK_MODE_CHANGE_ACK: + case LK_RESPONSE_RESERVED: + DBG(KERN_INFO "Got %s and don't know how to handle...\n", + response_name(data)); + break; + + default: + keycode = lk->keycode[data]; + if (keycode != KEY_RESERVED) { + input_report_key(input_dev, keycode, + !test_bit(keycode, input_dev->key)); + input_sync(input_dev); + } else { + printk(KERN_WARNING + "%s: Unknown key with scancode 0x%02x on %s.\n", + __FILE__, data, lk->name); + } + } + + return IRQ_HANDLED; +} + +static void lkkbd_toggle_leds(struct lkkbd *lk) +{ + struct serio *serio = lk->serio; + unsigned char leds_on = 0; + unsigned char leds_off = 0; + + CHECK_LED(lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK); + CHECK_LED(lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE); + CHECK_LED(lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK); + CHECK_LED(lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT); + if (leds_on != 0) { + serio_write(serio, LK_CMD_LED_ON); + serio_write(serio, leds_on); + } + if (leds_off != 0) { + serio_write(serio, LK_CMD_LED_OFF); + serio_write(serio, leds_off); + } +} + +static void lkkbd_toggle_keyclick(struct lkkbd *lk, bool on) +{ + struct serio *serio = lk->serio; + + if (on) { + DBG("%s: Activating key clicks\n", __func__); + serio_write(serio, LK_CMD_ENABLE_KEYCLICK); + serio_write(serio, volume_to_hw(lk->keyclick_volume)); + serio_write(serio, LK_CMD_ENABLE_CTRCLICK); + serio_write(serio, volume_to_hw(lk->ctrlclick_volume)); + } else { + DBG("%s: Deactivating key clicks\n", __func__); + serio_write(serio, LK_CMD_DISABLE_KEYCLICK); + serio_write(serio, LK_CMD_DISABLE_CTRCLICK); + } + +} + +/* + * lkkbd_event() handles events from the input module. + */ +static int lkkbd_event(struct input_dev *dev, + unsigned int type, unsigned int code, int value) +{ + struct lkkbd *lk = input_get_drvdata(dev); + + switch (type) { + case EV_LED: + lkkbd_toggle_leds(lk); + return 0; + + case EV_SND: + switch (code) { + case SND_CLICK: + lkkbd_toggle_keyclick(lk, value); + return 0; + + case SND_BELL: + if (value != 0) + serio_write(lk->serio, LK_CMD_SOUND_BELL); + + return 0; + } + + break; + + default: + printk(KERN_ERR "%s(): Got unknown type %d, code %d, value %d\n", + __func__, type, code, value); + } + + return -1; +} + +/* + * lkkbd_reinit() sets leds and beeps to a state the computer remembers they + * were in. + */ +static void lkkbd_reinit(struct work_struct *work) +{ + struct lkkbd *lk = container_of(work, struct lkkbd, tq); + int division; + + /* Ask for ID */ + serio_write(lk->serio, LK_CMD_REQUEST_ID); + + /* Reset parameters */ + serio_write(lk->serio, LK_CMD_SET_DEFAULTS); + + /* Set LEDs */ + lkkbd_toggle_leds(lk); + + /* + * Try to activate extended LK401 mode. This command will + * only work with a LK401 keyboard and grants access to + * LAlt, RAlt, RCompose and RShift. + */ + serio_write(lk->serio, LK_CMD_ENABLE_LK401); + + /* Set all keys to UPDOWN mode */ + for (division = 1; division <= 14; division++) + serio_write(lk->serio, + LK_CMD_SET_MODE(LK_MODE_UPDOWN, division)); + + /* Enable bell and set volume */ + serio_write(lk->serio, LK_CMD_ENABLE_BELL); + serio_write(lk->serio, volume_to_hw(lk->bell_volume)); + + /* Enable/disable keyclick (and possibly set volume) */ + lkkbd_toggle_keyclick(lk, test_bit(SND_CLICK, lk->dev->snd)); + + /* Sound the bell if needed */ + if (test_bit(SND_BELL, lk->dev->snd)) + serio_write(lk->serio, LK_CMD_SOUND_BELL); +} + +/* + * lkkbd_connect() probes for a LK keyboard and fills the necessary structures. + */ +static int lkkbd_connect(struct serio *serio, struct serio_driver *drv) +{ + struct lkkbd *lk; + struct input_dev *input_dev; + int i; + int err; + + lk = kzalloc(sizeof(struct lkkbd), GFP_KERNEL); + input_dev = input_allocate_device(); + if (!lk || !input_dev) { + err = -ENOMEM; + goto fail1; + } + + lk->serio = serio; + lk->dev = input_dev; + INIT_WORK(&lk->tq, lkkbd_reinit); + lk->bell_volume = bell_volume; + lk->keyclick_volume = keyclick_volume; + lk->ctrlclick_volume = ctrlclick_volume; + memcpy(lk->keycode, lkkbd_keycode, sizeof(lk->keycode)); + + strlcpy(lk->name, "DEC LK keyboard", sizeof(lk->name)); + snprintf(lk->phys, sizeof(lk->phys), "%s/input0", serio->phys); + + input_dev->name = lk->name; + input_dev->phys = lk->phys; + input_dev->id.bustype = BUS_RS232; + input_dev->id.vendor = SERIO_LKKBD; + input_dev->id.product = 0; + input_dev->id.version = 0x0100; + input_dev->dev.parent = &serio->dev; + input_dev->event = lkkbd_event; + + input_set_drvdata(input_dev, lk); + + __set_bit(EV_KEY, input_dev->evbit); + __set_bit(EV_LED, input_dev->evbit); + __set_bit(EV_SND, input_dev->evbit); + __set_bit(EV_REP, input_dev->evbit); + __set_bit(LED_CAPSL, input_dev->ledbit); + __set_bit(LED_SLEEP, input_dev->ledbit); + __set_bit(LED_COMPOSE, input_dev->ledbit); + __set_bit(LED_SCROLLL, input_dev->ledbit); + __set_bit(SND_BELL, input_dev->sndbit); + __set_bit(SND_CLICK, input_dev->sndbit); + + input_dev->keycode = lk->keycode; + input_dev->keycodesize = sizeof(lk->keycode[0]); + input_dev->keycodemax = ARRAY_SIZE(lk->keycode); + + for (i = 0; i < LK_NUM_KEYCODES; i++) + __set_bit(lk->keycode[i], input_dev->keybit); + __clear_bit(KEY_RESERVED, input_dev->keybit); + + serio_set_drvdata(serio, lk); + + err = serio_open(serio, drv); + if (err) + goto fail2; + + err = input_register_device(lk->dev); + if (err) + goto fail3; + + serio_write(lk->serio, LK_CMD_POWERCYCLE_RESET); + + return 0; + + fail3: serio_close(serio); + fail2: serio_set_drvdata(serio, NULL); + fail1: input_free_device(input_dev); + kfree(lk); + return err; +} + +/* + * lkkbd_disconnect() unregisters and closes behind us. + */ +static void lkkbd_disconnect(struct serio *serio) +{ + struct lkkbd *lk = serio_get_drvdata(serio); + + input_get_device(lk->dev); + input_unregister_device(lk->dev); + serio_close(serio); + serio_set_drvdata(serio, NULL); + input_put_device(lk->dev); + kfree(lk); +} + +static struct serio_device_id lkkbd_serio_ids[] = { + { + .type = SERIO_RS232, + .proto = SERIO_LKKBD, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids); + +static struct serio_driver lkkbd_drv = { + .driver = { + .name = "lkkbd", + }, + .description = DRIVER_DESC, + .id_table = lkkbd_serio_ids, + .connect = lkkbd_connect, + .disconnect = lkkbd_disconnect, + .interrupt = lkkbd_interrupt, +}; + +/* + * The functions for insering/removing us as a module. + */ +static int __init lkkbd_init(void) +{ + return serio_register_driver(&lkkbd_drv); +} + +static void __exit lkkbd_exit(void) +{ + serio_unregister_driver(&lkkbd_drv); +} + +module_init(lkkbd_init); +module_exit(lkkbd_exit); + |