/* * AT and PS/2 keyboard driver * * Copyright (c) 1999-2002 Vojtech Pavlik */ /* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ /* * This driver can handle standard AT keyboards and PS/2 keyboards in * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb * input-only controllers and AT keyboards connected over a one way RS232 * converter. */ #include #include #include #include #include #include #include #include #include #define DRIVER_DESC "AT and PS/2 keyboard driver" MODULE_AUTHOR("Vojtech Pavlik "); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); static int atkbd_set = 2; module_param_named(set, atkbd_set, int, 0); MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)"); #if defined(__i386__) || defined(__x86_64__) || defined(__hppa__) static int atkbd_reset; #else static int atkbd_reset = 1; #endif module_param_named(reset, atkbd_reset, bool, 0); MODULE_PARM_DESC(reset, "Reset keyboard during initialization"); static int atkbd_softrepeat; module_param_named(softrepeat, atkbd_softrepeat, bool, 0); MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat"); static int atkbd_softraw = 1; module_param_named(softraw, atkbd_softraw, bool, 0); MODULE_PARM_DESC(softraw, "Use software generated rawmode"); static int atkbd_scroll; module_param_named(scroll, atkbd_scroll, bool, 0); MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards"); static int atkbd_extra; module_param_named(extra, atkbd_extra, bool, 0); MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards"); __obsolete_setup("atkbd_set="); __obsolete_setup("atkbd_reset"); __obsolete_setup("atkbd_softrepeat="); /* * Scancode to keycode tables. These are just the default setting, and * are loadable via an userland utility. */ #if defined(__hppa__) #include "hpps2atkbd.h" #else static unsigned char atkbd_set2_keycode[512] = { 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117, 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0, 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183, 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185, 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0, 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85, 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0, 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125, 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127, 159, 0,115, 0,164, 0, 0,116,158, 0,150,166, 0, 0, 0,142, 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0, 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112, 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0, 0, 0, 0, 65, 99, }; #endif static unsigned char atkbd_set3_keycode[512] = { 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60, 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62, 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64, 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66, 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68, 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70, 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104, 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183, 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0, 0,139,150,163,165,115,152,150,166,140,160,154,113,114,167,168, 148,149,147,140 }; static unsigned char atkbd_unxlate_table[128] = { 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13, 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27, 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42, 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3, 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105, 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63, 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111, 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110 }; #define ATKBD_CMD_SETLEDS 0x10ed #define ATKBD_CMD_GSCANSET 0x11f0 #define ATKBD_CMD_SSCANSET 0x10f0 #define ATKBD_CMD_GETID 0x02f2 #define ATKBD_CMD_SETREP 0x10f3 #define ATKBD_CMD_ENABLE 0x00f4 #define ATKBD_CMD_RESET_DIS 0x00f5 #define ATKBD_CMD_SETALL_MBR 0x00fa #define ATKBD_CMD_RESET_BAT 0x02ff #define ATKBD_CMD_RESEND 0x00fe #define ATKBD_CMD_EX_ENABLE 0x10ea #define ATKBD_CMD_EX_SETLEDS 0x20eb #define ATKBD_CMD_OK_GETID 0x02e8 #define ATKBD_RET_ACK 0xfa #define ATKBD_RET_NAK 0xfe #define ATKBD_RET_BAT 0xaa #define ATKBD_RET_EMUL0 0xe0 #define ATKBD_RET_EMUL1 0xe1 #define ATKBD_RET_RELEASE 0xf0 #define ATKBD_RET_HANGUEL 0xf1 #define ATKBD_RET_HANJA 0xf2 #define ATKBD_RET_ERR 0xff #define ATKBD_KEY_UNKNOWN 0 #define ATKBD_KEY_NULL 255 #define ATKBD_SCR_1 254 #define ATKBD_SCR_2 253 #define ATKBD_SCR_4 252 #define ATKBD_SCR_8 251 #define ATKBD_SCR_CLICK 250 #define ATKBD_SPECIAL 250 static unsigned char atkbd_scroll_keys[5][2] = { { ATKBD_SCR_1, 0x45 }, { ATKBD_SCR_2, 0x29 }, { ATKBD_SCR_4, 0x36 }, { ATKBD_SCR_8, 0x27 }, { ATKBD_SCR_CLICK, 0x60 }, }; #define ATKBD_FLAG_ACK 0 /* Waiting for ACK/NAK */ #define ATKBD_FLAG_CMD 1 /* Waiting for command to finish */ #define ATKBD_FLAG_CMD1 2 /* First byte of command response */ #define ATKBD_FLAG_ENABLED 3 /* Waining for init to finish */ /* * The atkbd control structure */ struct atkbd { /* Written only during init */ char name[64]; char phys[32]; struct serio *serio; struct input_dev dev; unsigned char set; unsigned short id; unsigned char keycode[512]; unsigned char translated; unsigned char extra; unsigned char write; /* Protected by FLAG_ACK */ unsigned char nak; /* Protected by FLAG_CMD */ unsigned char cmdbuf[4]; unsigned char cmdcnt; /* Accessed only from interrupt */ unsigned char emul; unsigned char resend; unsigned char release; unsigned char bat_xl; unsigned int last; unsigned long time; /* Ensures that only one command is executing at a time */ struct semaphore cmd_sem; /* Used to signal completion from interrupt handler */ wait_queue_head_t wait; /* Flags */ unsigned long flags; }; /* Work structure to schedule execution of a command */ struct atkbd_work { struct work_struct work; struct atkbd *atkbd; int command; unsigned char param[0]; }; static void atkbd_report_key(struct input_dev *dev, struct pt_regs *regs, int code, int value) { input_regs(dev, regs); if (value == 3) { input_report_key(dev, code, 1); input_report_key(dev, code, 0); } else input_event(dev, EV_KEY, code, value); input_sync(dev); } /* * atkbd_interrupt(). Here takes place processing of data received from * the keyboard into events. */ static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data, unsigned int flags, struct pt_regs *regs) { struct atkbd *atkbd = serio->private; unsigned int code = data; int scroll = 0, click = -1; int value; #ifdef ATKBD_DEBUG printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags); #endif #if !defined(__i386__) && !defined (__x86_64__) if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) { printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags); serio_write(serio, ATKBD_CMD_RESEND); atkbd->resend = 1; goto out; } if (!flags && data == ATKBD_RET_ACK) atkbd->resend = 0; #endif if (test_bit(ATKBD_FLAG_ACK, &atkbd->flags)) { switch (code) { case ATKBD_RET_ACK: atkbd->nak = 0; if (atkbd->cmdcnt) { set_bit(ATKBD_FLAG_CMD, &atkbd->flags); set_bit(ATKBD_FLAG_CMD1, &atkbd->flags); } clear_bit(ATKBD_FLAG_ACK, &atkbd->flags); wake_up_interruptible(&atkbd->wait); break; case ATKBD_RET_NAK: atkbd->nak = 1; clear_bit(ATKBD_FLAG_ACK, &atkbd->flags); wake_up_interruptible(&atkbd->wait); break; } goto out; } if (test_bit(ATKBD_FLAG_CMD, &atkbd->flags)) { if (atkbd->cmdcnt) atkbd->cmdbuf[--atkbd->cmdcnt] = code; if (test_and_clear_bit(ATKBD_FLAG_CMD1, &atkbd->flags) && atkbd->cmdcnt) wake_up_interruptible(&atkbd->wait); if (!atkbd->cmdcnt) { clear_bit(ATKBD_FLAG_CMD, &atkbd->flags); wake_up_interruptible(&atkbd->wait); } goto out; } if (!test_bit(ATKBD_FLAG_ENABLED, &atkbd->flags)) goto out; input_event(&atkbd->dev, EV_MSC, MSC_RAW, code); if (atkbd->translated) { if (atkbd->emul || !(code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1 || code == ATKBD_RET_HANGUEL || code == ATKBD_RET_HANJA || code == ATKBD_RET_ERR || (code == ATKBD_RET_BAT && !atkbd->bat_xl))) { atkbd->release = code >> 7; code &= 0x7f; } if (!atkbd->emul && (code & 0x7f) == (ATKBD_RET_BAT & 0x7f)) atkbd->bat_xl = !atkbd->release; } switch (code) { case ATKBD_RET_BAT: clear_bit(ATKBD_FLAG_ENABLED, &atkbd->flags); serio_rescan(atkbd->serio); goto out; case ATKBD_RET_EMUL0: atkbd->emul = 1; goto out; case ATKBD_RET_EMUL1: atkbd->emul = 2; goto out; case ATKBD_RET_RELEASE: atkbd->release = 1; goto out; case ATKBD_RET_HANGUEL: atkbd_report_key(&atkbd->dev, regs, KEY_HANGUEL, 3); goto out; case ATKBD_RET_HANJA: atkbd_report_key(&atkbd->dev, regs, KEY_HANJA, 3); goto out; case ATKBD_RET_ERR: printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys); goto out; } if (atkbd->set != 3) code = (code & 0x7f) | ((code & 0x80) << 1); if (atkbd->emul) { if (--atkbd->emul) goto out; code |= (atkbd->set != 3) ? 0x80 : 0x100; } if (atkbd->keycode[code] != ATKBD_KEY_NULL) input_event(&atkbd->dev, EV_MSC, MSC_SCAN, code); switch (atkbd->keycode[code]) { case ATKBD_KEY_NULL: break; case ATKBD_KEY_UNKNOWN: if (data == ATKBD_RET_ACK || data == ATKBD_RET_NAK) { printk(KERN_WARNING "atkbd.c: Spurious %s on %s. Some program, " "like XFree86, might be trying access hardware directly.\n", data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys); } else { printk(KERN_WARNING "atkbd.c: Unknown key %s " "(%s set %d, code %#x on %s).\n", atkbd->release ? "released" : "pressed", atkbd->translated ? "translated" : "raw", atkbd->set, code, serio->phys); printk(KERN_WARNING "atkbd.c: Use 'setkeycodes %s%02x ' " "to make it known.\n", code & 0x80 ? "e0" : "", code & 0x7f); } break; case ATKBD_SCR_1: scroll = 1 - atkbd->release * 2; break; case ATKBD_SCR_2: scroll = 2 - atkbd->release * 4; break; case ATKBD_SCR_4: scroll = 4 - atkbd->release * 8; break; case ATKBD_SCR_8: scroll = 8 - atkbd->release * 16; break; case ATKBD_SCR_CLICK: click = !atkbd->release; break; default: value = atkbd->release ? 0 : (1 + (!atkbd_softrepeat && test_bit(atkbd->keycode[code], atkbd->dev.key))); switch (value) { /* Workaround Toshiba laptop multiple keypress */ case 0: atkbd->last = 0; break; case 1: atkbd->last = code; atkbd->time = jiffies + (atkbd->dev.rep[REP_DELAY] * HZ + 500) / 1000 / 2; break; case 2: if (!time_after(jiffies, atkbd->time) && atkbd->last == code) value = 1; break; } atkbd_report_key(&atkbd->dev, regs, atkbd->keycode[code], value); } if (scroll || click != -1) { input_regs(&atkbd->dev, regs); input_report_key(&atkbd->dev, BTN_MIDDLE, click); input_report_rel(&atkbd->dev, REL_WHEEL, scroll); input_sync(&atkbd->dev); } atkbd->release = 0; out: return IRQ_HANDLED; } /* * atkbd_sendbyte() sends a byte to the keyboard, and waits for * acknowledge. It doesn't handle resends according to the keyboard * protocol specs, because if these are needed, the keyboard needs * replacement anyway, and they only make a mess in the protocol. * * atkbd_sendbyte() can only be called from a process context */ static int atkbd_sendbyte(struct atkbd *atkbd, unsigned char byte) { #ifdef ATKBD_DEBUG printk(KERN_DEBUG "atkbd.c: Sent: %02x\n", byte); #endif atkbd->nak = 1; set_bit(ATKBD_FLAG_ACK, &atkbd->flags); if (serio_write(atkbd->serio, byte) == 0) wait_event_interruptible_timeout(atkbd->wait, !test_bit(ATKBD_FLAG_ACK, &atkbd->flags), msecs_to_jiffies(200)); clear_bit(ATKBD_FLAG_ACK, &atkbd->flags); return -atkbd->nak; } /* * atkbd_command() sends a command, and its parameters to the keyboard, * then waits for the response and puts it in the param array. * * atkbd_command() can only be called from a process context */ static int atkbd_command(struct atkbd *atkbd, unsigned char *param, int command) { int timeout; int send = (command >> 12) & 0xf; int receive = (command >> 8) & 0xf; int rc = -1; int i; timeout = msecs_to_jiffies(command == ATKBD_CMD_RESET_BAT ? 4000 : 500); down(&atkbd->cmd_sem); clear_bit(ATKBD_FLAG_CMD, &atkbd->flags); if (receive && param) for (i = 0; i < receive; i++) atkbd->cmdbuf[(receive - 1) - i] = param[i]; atkbd->cmdcnt = receive; if (command & 0xff) if (atkbd_sendbyte(atkbd, command & 0xff)) goto out; for (i = 0; i < send; i++) if (atkbd_sendbyte(atkbd, param[i])) goto out; timeout = wait_event_interruptible_timeout(atkbd->wait, !test_bit(ATKBD_FLAG_CMD1, &atkbd->flags), timeout); if (atkbd->cmdcnt && timeout > 0) { if (command == ATKBD_CMD_RESET_BAT && jiffies_to_msecs(timeout) > 100) timeout = msecs_to_jiffies(100); if (command == ATKBD_CMD_GETID && atkbd->cmdbuf[receive - 1] != 0xab && atkbd->cmdbuf[receive - 1] != 0xac) { /* * Device behind the port is not a keyboard * so we don't need to wait for the 2nd byte * of ID response. */ clear_bit(ATKBD_FLAG_CMD, &atkbd->flags); atkbd->cmdcnt = 0; } wait_event_interruptible_timeout(atkbd->wait, !test_bit(ATKBD_FLAG_CMD, &atkbd->flags), timeout); } if (param) for (i = 0; i < receive; i++) param[i] = atkbd->cmdbuf[(receive - 1) - i]; if (atkbd->cmdcnt && (command != ATKBD_CMD_RESET_BAT || atkbd->cmdcnt != 1)) goto out; rc = 0; out: clear_bit(ATKBD_FLAG_CMD, &atkbd->flags); clear_bit(ATKBD_FLAG_CMD1, &atkbd->flags); up(&atkbd->cmd_sem); return rc; } /* * atkbd_execute_scheduled_command() sends a command, previously scheduled by * atkbd_schedule_command(), to the keyboard. */ static void atkbd_execute_scheduled_command(void *data) { struct atkbd_work *atkbd_work = data; atkbd_command(atkbd_work->atkbd, atkbd_work->param, atkbd_work->command); kfree(atkbd_work); } /* * atkbd_schedule_command() allows to schedule delayed execution of a keyboard * command and can be used to issue a command from an interrupt or softirq * context. */ static int atkbd_schedule_command(struct atkbd *atkbd, unsigned char *param, int command) { struct atkbd_work *atkbd_work; int send = (command >> 12) & 0xf; int receive = (command >> 8) & 0xf; if (!test_bit(ATKBD_FLAG_ENABLED, &atkbd->flags)) return -1; if (!(atkbd_work = kmalloc(sizeof(struct atkbd_work) + max(send, receive), GFP_ATOMIC))) return -1; memset(atkbd_work, 0, sizeof(struct atkbd_work)); atkbd_work->atkbd = atkbd; atkbd_work->command = command; memcpy(atkbd_work->param, param, send); INIT_WORK(&atkbd_work->work, atkbd_execute_scheduled_command, atkbd_work); if (!schedule_work(&atkbd_work->work)) { kfree(atkbd_work); return -1; } return 0; } /* * Event callback from the input module. Events that change the state of * the hardware are processed here. */ static int atkbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) { struct atkbd *atkbd = dev->private; const short period[32] = { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125, 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 }; const short delay[4] = { 250, 500, 750, 1000 }; unsigned char param[2]; int i, j; if (!atkbd->write) return -1; switch (type) { case EV_LED: param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0) | (test_bit(LED_NUML, dev->led) ? 2 : 0) | (test_bit(LED_CAPSL, dev->led) ? 4 : 0); atkbd_schedule_command(atkbd, param, ATKBD_CMD_SETLEDS); if (atkbd->extra) { param[0] = 0; param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0) | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0) | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0) | (test_bit(LED_MISC, dev->led) ? 0x10 : 0) | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0); atkbd_schedule_command(atkbd, param, ATKBD_CMD_EX_SETLEDS); } return 0; case EV_REP: if (atkbd_softrepeat) return 0; i = j = 0; while (i < 32 && period[i] < dev->rep[REP_PERIOD]) i++; while (j < 4 && delay[j] < dev->rep[REP_DELAY]) j++; dev->rep[REP_PERIOD] = period[i]; dev->rep[REP_DELAY] = delay[j]; param[0] = i | (j << 5); atkbd_schedule_command(atkbd, param, ATKBD_CMD_SETREP); return 0; } return -1; } /* * atkbd_probe() probes for an AT keyboard on a serio port. */ static int atkbd_probe(struct atkbd *atkbd) { unsigned char param[2]; /* * Some systems, where the bit-twiddling when testing the io-lines of the * controller may confuse the keyboard need a full reset of the keyboard. On * these systems the BIOS also usually doesn't do it for us. */ if (atkbd_reset) if (atkbd_command(atkbd, NULL, ATKBD_CMD_RESET_BAT)) printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", atkbd->serio->phys); /* * Then we check the keyboard ID. We should get 0xab83 under normal conditions. * Some keyboards report different values, but the first byte is always 0xab or * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this * should make sure we don't try to set the LEDs on it. */ param[0] = param[1] = 0xa5; /* initialize with invalid values */ if (atkbd_command(atkbd, param, ATKBD_CMD_GETID)) { /* * If the get ID command failed, we check if we can at least set the LEDs on * the keyboard. This should work on every keyboard out there. It also turns * the LEDs off, which we want anyway. */ param[0] = 0; if (atkbd_command(atkbd, param, ATKBD_CMD_SETLEDS)) return -1; atkbd->id = 0xabba; return 0; } if (param[0] != 0xab && param[0] != 0xac) return -1; atkbd->id = (param[0] << 8) | param[1]; if (atkbd->id == 0xaca1 && atkbd->translated) { printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n"); printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n"); return -1; } return 0; } /* * atkbd_set_3 checks if a keyboard has a working Set 3 support, and * sets it into that. Unfortunately there are keyboards that can be switched * to Set 3, but don't work well in that (BTC Multimedia ...) */ static int atkbd_set_3(struct atkbd *atkbd) { unsigned char param[2]; /* * For known special keyboards we can go ahead and set the correct set. * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards. */ if (atkbd->translated) return 2; if (atkbd->id == 0xaca1) { param[0] = 3; atkbd_command(atkbd, param, ATKBD_CMD_SSCANSET); return 3; } if (atkbd_extra) { param[0] = 0x71; if (!atkbd_command(atkbd, param, ATKBD_CMD_EX_ENABLE)) { atkbd->extra = 1; return 2; } } if (atkbd_set != 3) return 2; if (!atkbd_command(atkbd, param, ATKBD_CMD_OK_GETID)) { atkbd->id = param[0] << 8 | param[1]; return 2; } param[0] = 3; if (atkbd_command(atkbd, param, ATKBD_CMD_SSCANSET)) return 2; param[0] = 0; if (atkbd_command(atkbd, param, ATKBD_CMD_GSCANSET)) return 2; if (param[0] != 3) { param[0] = 2; if (atkbd_command(atkbd, param, ATKBD_CMD_SSCANSET)) return 2; } atkbd_command(atkbd, param, ATKBD_CMD_SETALL_MBR); return 3; } static int atkbd_enable(struct atkbd *atkbd) { unsigned char param[1]; /* * Set the LEDs to a defined state. */ param[0] = 0; if (atkbd_command(atkbd, param, ATKBD_CMD_SETLEDS)) return -1; /* * Set autorepeat to fastest possible. */ param[0] = 0; if (atkbd_command(atkbd, param, ATKBD_CMD_SETREP)) return -1; /* * Enable the keyboard to receive keystrokes. */ if (atkbd_command(atkbd, NULL, ATKBD_CMD_ENABLE)) { printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n", atkbd->serio->phys); return -1; } return 0; } /* * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a * reboot. */ static void atkbd_cleanup(struct serio *serio) { struct atkbd *atkbd = serio->private; atkbd_command(atkbd, NULL, ATKBD_CMD_RESET_BAT); } /* * atkbd_disconnect() closes and frees. */ static void atkbd_disconnect(struct serio *serio) { struct atkbd *atkbd = serio->private; clear_bit(ATKBD_FLAG_ENABLED, &atkbd->flags); synchronize_kernel(); flush_scheduled_work(); input_unregister_device(&atkbd->dev); serio_close(serio); kfree(atkbd); } /* * atkbd_connect() is called when the serio module finds and interface * that isn't handled yet by an appropriate device driver. We check if * there is an AT keyboard out there and if yes, we register ourselves * to the input module. */ static void atkbd_connect(struct serio *serio, struct serio_driver *drv) { struct atkbd *atkbd; int i; if (!(atkbd = kmalloc(sizeof(struct atkbd), GFP_KERNEL))) return; memset(atkbd, 0, sizeof(struct atkbd)); init_MUTEX(&atkbd->cmd_sem); init_waitqueue_head(&atkbd->wait); switch (serio->type & SERIO_TYPE) { case SERIO_8042_XL: atkbd->translated = 1; case SERIO_8042: if (serio->write) atkbd->write = 1; break; case SERIO_RS232: if ((serio->type & SERIO_PROTO) == SERIO_PS2SER) break; default: kfree(atkbd); return; } if (!atkbd->write) atkbd_softrepeat = 1; if (atkbd_softrepeat) atkbd_softraw = 1; if (atkbd->write) { atkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP) | BIT(EV_MSC); atkbd->dev.ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL); } else atkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_MSC); atkbd->dev.mscbit[0] = atkbd_softraw ? BIT(MSC_SCAN) : BIT(MSC_RAW) | BIT(MSC_SCAN); if (!atkbd_softrepeat) { atkbd->dev.rep[REP_DELAY] = 250; atkbd->dev.rep[REP_PERIOD] = 33; } else atkbd_softraw = 1; atkbd->serio = serio; init_input_dev(&atkbd->dev); atkbd->dev.keycode = atkbd->keycode; atkbd->dev.keycodesize = sizeof(unsigned char); atkbd->dev.keycodemax = ARRAY_SIZE(atkbd_set2_keycode); atkbd->dev.event = atkbd_event; atkbd->dev.private = atkbd; serio->private = atkbd; if (serio_open(serio, drv)) { kfree(atkbd); return; } if (atkbd->write) { if (atkbd_probe(atkbd)) { serio_close(serio); serio->private = NULL; kfree(atkbd); return; } atkbd->set = atkbd_set_3(atkbd); atkbd_enable(atkbd); } else { atkbd->set = 2; atkbd->id = 0xab00; } if (atkbd->extra) { atkbd->dev.ledbit[0] |= BIT(LED_COMPOSE) | BIT(LED_SUSPEND) | BIT(LED_SLEEP) | BIT(LED_MUTE) | BIT(LED_MISC); sprintf(atkbd->name, "AT Set 2 Extra keyboard"); } else sprintf(atkbd->name, "AT %s Set %d keyboard", atkbd->translated ? "Translated" : "Raw", atkbd->set); sprintf(atkbd->phys, "%s/input0", serio->phys); if (atkbd_scroll) { for (i = 0; i < 5; i++) atkbd_set2_keycode[atkbd_scroll_keys[i][1]] = atkbd_scroll_keys[i][0]; atkbd->dev.evbit[0] |= BIT(EV_REL); atkbd->dev.relbit[0] = BIT(REL_WHEEL); set_bit(BTN_MIDDLE, atkbd->dev.keybit); } if (atkbd->translated) { for (i = 0; i < 128; i++) { atkbd->keycode[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]]; atkbd->keycode[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80]; } } else if (atkbd->set == 3) { memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode)); } else { memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode)); } atkbd->dev.name = atkbd->name; atkbd->dev.phys = atkbd->phys; atkbd->dev.id.bustype = BUS_I8042; atkbd->dev.id.vendor = 0x0001; atkbd->dev.id.product = atkbd->translated ? 1 : atkbd->set; atkbd->dev.id.version = atkbd->id; for (i = 0; i < 512; i++) if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL) set_bit(atkbd->keycode[i], atkbd->dev.keybit); input_register_device(&atkbd->dev); set_bit(ATKBD_FLAG_ENABLED, &atkbd->flags); printk(KERN_INFO "input: %s on %s\n", atkbd->name, serio->phys); } /* * atkbd_reconnect() tries to restore keyboard into a sane state and is * most likely called on resume. */ static int atkbd_reconnect(struct serio *serio) { struct atkbd *atkbd = serio->private; struct serio_driver *drv = serio->drv; unsigned char param[1]; if (!drv) { printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n"); return -1; } if (atkbd->write) { param[0] = (test_bit(LED_SCROLLL, atkbd->dev.led) ? 1 : 0) | (test_bit(LED_NUML, atkbd->dev.led) ? 2 : 0) | (test_bit(LED_CAPSL, atkbd->dev.led) ? 4 : 0); if (atkbd_probe(atkbd)) return -1; if (atkbd->set != atkbd_set_3(atkbd)) return -1; atkbd_enable(atkbd); if (atkbd_command(atkbd, param, ATKBD_CMD_SETLEDS)) return -1; } set_bit(ATKBD_FLAG_ENABLED, &atkbd->flags); return 0; } static struct serio_driver atkbd_drv = { .driver = { .name = "atkbd", }, .description = DRIVER_DESC, .interrupt = atkbd_interrupt, .connect = atkbd_connect, .reconnect = atkbd_reconnect, .disconnect = atkbd_disconnect, .cleanup = atkbd_cleanup, }; int __init atkbd_init(void) { serio_register_driver(&atkbd_drv); return 0; } void __exit atkbd_exit(void) { serio_unregister_driver(&atkbd_drv); } module_init(atkbd_init); module_exit(atkbd_exit);