File: [Development] / linux-2.6-xfs / drivers / input / keyboard / atkbd.c (download)
Revision 1.7, Fri Oct 1 15:10:15 2004 UTC (13 years ago) by nathans.longdrop.melbourne.sgi.com
Branch: MAIN
Changes since 1.6: +213 -70
lines
Upgrade kernel to 2.6.9-rc3 and kdb to 4.4
Merge of 2.6.x-xfs-melb:linux:19628a by kenmcd.
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/*
* 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 <linux/delay.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/serio.h>
#include <linux/workqueue.h>
#define DRIVER_DESC "AT and PS/2 keyboard driver"
MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
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 <keycode>' "
"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);
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