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[Linuxconsole-commit]CVS: ruby/linux/drivers/input/keyboard atkbd.c,NONE,1.30
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From: Vojtech P. <vo...@us...> - 2002-01-22 20:37:18
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Update of /cvsroot/linuxconsole/ruby/linux/drivers/input/keyboard
In directory usw-pr-cvs1:/tmp/cvs-serv8793
Added Files:
Tag: 1.30
atkbd.c
Log Message:
Moved.
--- NEW FILE: atkbd.c ---
/*
* $Id: atkbd.c,v 1.30 2002/01/22 20:37:14 vojtech Exp $
*
* Copyright (c) 1999-2001 Vojtech Pavlik
*/
/*
* 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
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to <vo...@uc...>, or by paper mail:
* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
*/
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/serio.h>
MODULE_AUTHOR("Vojtech Pavlik <vo...@uc...>");
MODULE_DESCRIPTION("AT and PS/2 keyboard driver");
MODULE_PARM(atkbd_set, "1i");
MODULE_LICENSE("GPL");
static int atkbd_set = 2;
/*
* Scancode to keycode tables. These are just the default setting, and
* are loadable via an userland utility.
*/
static unsigned char atkbd_set2_keycode[512] = {
0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41, 85,
0, 56, 42, 0, 29, 16, 2, 89, 0, 0, 44, 31, 30, 17, 3, 90,
0, 46, 45, 32, 18, 5, 4, 91, 0, 57, 47, 33, 20, 19, 6, 0,
0, 49, 48, 35, 34, 21, 7, 0, 0, 0, 50, 36, 22, 8, 9, 0,
0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
122, 89, 40,120, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 0,
85, 86, 90, 91, 92, 93, 14, 94, 95, 79, 0, 75, 71,121, 0,123,
82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
252, 0, 0, 65, 99, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,251, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
252,253, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
254, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,255,
0, 0, 92, 90, 85, 0,137, 0, 0, 0, 0, 91, 89,144,115, 0,
136,100,255, 0, 97,149,164, 0,156, 0, 0,140,115, 0, 0,125,
0,150, 0,154,152,163,151,126,112,166, 0,140, 0,147, 0,127,
159,167,139,160,163, 0, 0,116,158, 0,150,165, 0, 0, 0,142,
157, 0,114,166,168, 0, 0, 0,155, 0, 98,113, 0,148, 0,138,
0, 0, 0, 0, 0, 0,153,140, 0, 0, 96, 0, 0, 0,143, 0,
133, 0,116, 0,143, 0,174,133, 0,107, 0,105,102, 0, 0,112,
110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119
};
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, 84, 26, 13, 87, 99,100, 54, 28, 27, 43, 84, 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, 85,
89, 90, 91, 92, 74, 0, 0, 0, 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, 0, 0, 0, 0, 0, 0,251, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
252,253, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
254, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,255
};
#define ATKBD_CMD_SETLEDS 0x10ed
#define ATKBD_CMD_GSCANSET 0x11f0
#define ATKBD_CMD_SSCANSET 0x10f0
#define ATKBD_CMD_GETID 0x02f2
#define ATKBD_CMD_ENABLE 0x00f4
#define ATKBD_CMD_RESET_DIS 0x00f5
#define ATKBD_CMD_SETALL_MB 0x00f8
#define ATKBD_CMD_EX_ENABLE 0x10ea
#define ATKBD_CMD_EX_SETLEDS 0x20eb
#define ATKBD_RET_ACK 0xfa
#define ATKBD_RET_NAK 0xfe
#define ATKBD_KEY_UNKNOWN 0
#define ATKBD_KEY_BAT 251
#define ATKBD_KEY_EMUL0 252
#define ATKBD_KEY_EMUL1 253
#define ATKBD_KEY_RELEASE 254
#define ATKBD_KEY_NULL 255
/*
* The atkbd control structure
*/
struct atkbd {
unsigned char keycode[512];
struct input_dev dev;
struct serio *serio;
char name[64];
char phys[32];
struct tq_struct tq;
unsigned char cmdbuf[4];
unsigned char cmdcnt;
unsigned char set;
char release;
char ack;
char emul;
char error;
unsigned short id;
};
/*
* atkbd_interrupt(). Here takes place processing of data received from
* the keyboard into events.
*/
static void atkbd_interrupt(struct serio *serio, unsigned char data, unsigned int flags)
{
struct atkbd *atkbd = serio->private;
int code = data;
#ifdef ATKBD_DEBUG
printk(KERN_DEBUG "atkbd.c: Received %02x\n", data);
#endif
switch (code) {
case ATKBD_RET_ACK:
atkbd->ack = 1;
return;
case ATKBD_RET_NAK:
atkbd->ack = -1;
return;
}
if (atkbd->cmdcnt) {
atkbd->cmdbuf[--atkbd->cmdcnt] = code;
return;
}
switch (atkbd->keycode[code]) {
case ATKBD_KEY_BAT:
queue_task(&atkbd->tq, &tq_immediate);
mark_bh(IMMEDIATE_BH);
return;
case ATKBD_KEY_EMUL0:
atkbd->emul = 1;
return;
case ATKBD_KEY_EMUL1:
atkbd->emul = 2;
return;
case ATKBD_KEY_RELEASE:
atkbd->release = 1;
return;
}
if (atkbd->emul) {
if (--atkbd->emul) return;
code |= 0x100;
}
switch (atkbd->keycode[code]) {
case ATKBD_KEY_NULL:
break;
case ATKBD_KEY_UNKNOWN:
printk(KERN_WARNING "atkbd.c: Unknown key (set %d, scancode %#x, on %s) %s.\n",
atkbd->set, code, serio->phys, atkbd->release ? "released" : "pressed");
break;
default:
input_report_key(&atkbd->dev, atkbd->keycode[code], !atkbd->release);
}
atkbd->release = 0;
}
/*
* 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.
*/
static int atkbd_sendbyte(struct atkbd *atkbd, unsigned char byte)
{
int timeout = 1000; /* 10 msec */
atkbd->ack = 0;
#ifdef ATKBD_DEBUG
printk(KERN_DEBUG "atkbd.c: Sent: %02x\n", byte);
#endif
serio_write(atkbd->serio, byte);
while (!atkbd->ack && timeout--) udelay(10);
return -(atkbd->ack <= 0);
}
/*
* atkbd_command() sends a command, and its parameters to the keyboard,
* then waits for the response and puts it in the param array.
*/
static int atkbd_command(struct atkbd *atkbd, unsigned char *param, int command)
{
int timeout = 10000; /* 100 msec */
int send = (command >> 12) & 0xf;
int receive = (command >> 8) & 0xf;
int i;
atkbd->cmdcnt = receive;
if (command & 0xff)
if (atkbd_sendbyte(atkbd, command & 0xff))
return (atkbd->cmdcnt = 0) - 1;
for (i = 0; i < send; i++)
if (atkbd_sendbyte(atkbd, param[i]))
return (atkbd->cmdcnt = 0) - 1;
while (atkbd->cmdcnt && timeout--) udelay(10);
for (i = 0; i < receive; i++)
param[i] = atkbd->cmdbuf[(receive - 1) - i];
if (atkbd->cmdcnt)
return (atkbd->cmdcnt = 0) - 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;
char param[2];
switch (type) {
case EV_LED:
*param = (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_command(atkbd, param, ATKBD_CMD_SETLEDS);
if (atkbd->set == 4) {
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_MUTE, dev->led) ? 0x20 : 0);
atkbd_command(atkbd, param, ATKBD_CMD_EX_SETLEDS);
}
return 0;
}
return -1;
}
/*
* 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;
/*
* For known special keyboards we can go ahead and set the correct set.
*/
if (atkbd->id == 0xaca1) {
param = 3;
atkbd_command(atkbd, ¶m, ATKBD_CMD_SSCANSET);
return 3;
}
/*
* We check for the extra keys on an some keyboards that need extra
* command to get enabled. This shouldn't harm any keyboards not
* knowing the command.
*/
param = 0x71;
if (!atkbd_command(atkbd, ¶m, ATKBD_CMD_EX_ENABLE))
return 4;
/*
* Try to set the set we want.
*/
param = atkbd_set;
if (atkbd_command(atkbd, ¶m, ATKBD_CMD_SSCANSET))
return 2;
/*
* Read set number. Beware here. Some keyboards always send '2'
* or some other number regardless into what mode they have been
* attempted to be set. Other keyboards treat the '0' command as
* 'set to set 0', and not 'report current set' as they should.
* In that case we time out, and return 2.
*/
param = 0;
if (atkbd_command(atkbd, ¶m, ATKBD_CMD_GSCANSET))
return 2;
/*
* Here we return the set number the keyboard reports about
* itself.
*/
return (param == 3) ? 3 : 2;
}
/*
* atkbd_probe() probes for an AT keyboard on a serio port.
*/
static int atkbd_probe(struct atkbd *atkbd)
{
unsigned char param[2];
/*
* Full reset with selftest can on some keyboards be annoyingly slow,
* so we just do a reset-and-disable on the keyboard, which
* is considerably faster, but doesn't have to reset everything.
*/
if (atkbd_command(atkbd, NULL, ATKBD_CMD_RESET_DIS))
return -1;
/*
* Next, we check if it's a keyboard. It should send 0xab83
* (0xab84 on IBM ThinkPad, and 0xaca1 on a NCD Sun layout keyboard,
* 0xab02 on unxlated i8042 and 0xab03 on unxlated ThinkPad, 0xab7f
* on Fujitsu Lifebook).
* If it's a mouse, it'll only send 0x00 (0x03 if it's MS mouse),
* and we'll time out here, and report an error.
*/
param[0] = param[1] = 0;
if (atkbd_command(atkbd, param, ATKBD_CMD_GETID))
return -1;
atkbd->id = (param[0] << 8) | param[1];
if (atkbd->id != 0xab83 && atkbd->id != 0xab84 && atkbd->id != 0xaca1 &&
atkbd->id != 0xab7f && atkbd->id != 0xab02 && atkbd->id != 0xab03)
printk(KERN_WARNING "atkbd.c: Unusual keyboard ID: %#x on %s\n",
atkbd->id, atkbd->serio->phys);
return 0;
}
/*
* atkbd_initialize() sets the keyboard into a sane state.
*/
static void atkbd_initialize(struct atkbd *atkbd)
{
unsigned char param;
/*
* Disable autorepeat. We don't need it, as we do it in software anyway,
* because that way can get faster repeat, and have less system load
* (less accesses to the slow ISA hardware). If this fails, we don't care,
* and will just ignore the repeated keys.
*/
atkbd_command(atkbd, NULL, ATKBD_CMD_SETALL_MB);
/*
* We also shut off all the leds. The console code will turn them back on,
* if needed.
*/
param = 0;
atkbd_command(atkbd, ¶m, ATKBD_CMD_SETLEDS);
/*
* Last, we enable the keyboard so that we get keypresses from it.
*/
if (atkbd_command(atkbd, NULL, ATKBD_CMD_ENABLE))
printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n",
atkbd->serio->phys);
}
/*
* atkbd_disconnect() cleans up behind us ...
*/
static void atkbd_disconnect(struct serio *serio)
{
struct atkbd *atkbd = serio->private;
input_unregister_device(&atkbd->dev);
serio_close(serio);
kfree(atkbd);
}
/*
* atkbd_powerup() is called when the keyboard sends the 0xaa character,
* meaning that it was disconnected and reconnected. We close the port
* in that case and let the upper layer find an appropriate driver for
* the device that was connected. It may be a mouse, or a keyboard, we
* don't know yet.
*/
static void atkbd_powerup(void *data)
{
struct atkbd *atkbd = data;
mdelay(40); /* FIXME!!! Wait some nicer way */
serio_rescan(atkbd->serio);
}
/*
* 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_dev *dev)
{
struct atkbd *atkbd;
int i;
if ((serio->type & SERIO_TYPE) != SERIO_8042)
return;
if (!(atkbd = kmalloc(sizeof(struct atkbd), GFP_KERNEL)))
return;
memset(atkbd, 0, sizeof(struct atkbd));
atkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
atkbd->dev.ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL);
atkbd->serio = serio;
atkbd->dev.keycode = atkbd->keycode;
atkbd->dev.event = atkbd_event;
atkbd->dev.private = atkbd;
atkbd->tq.routine = atkbd_powerup;
atkbd->tq.data = atkbd;
serio->private = atkbd;
if (serio_open(serio, dev)) {
kfree(atkbd);
return;
}
if (atkbd_probe(atkbd)) {
serio_close(serio);
kfree(atkbd);
return;
}
atkbd->set = atkbd_set_3(atkbd);
if (atkbd->set == 4) {
atkbd->dev.ledbit[0] |= BIT(LED_COMPOSE) | BIT(LED_SUSPEND) | BIT(LED_SLEEP) | BIT(LED_MUTE);
sprintf(atkbd->name, "AT Set 2 Extended keyboard\n");
} else
sprintf(atkbd->name, "AT Set %d keyboard", atkbd->set);
sprintf(atkbd->phys, "%s/input0", serio->phys);
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.idbus = BUS_I8042;
atkbd->dev.idvendor = 0x0001;
atkbd->dev.idproduct = atkbd->set;
atkbd->dev.idversion = atkbd->id;
for (i = 0; i < 512; i++)
if (atkbd->keycode[i] && atkbd->keycode[i] <= 250)
set_bit(atkbd->keycode[i], atkbd->dev.keybit);
input_register_device(&atkbd->dev);
printk(KERN_INFO "input: %s on %s\n", atkbd->name, serio->phys);
atkbd_initialize(atkbd);
}
static struct serio_dev atkbd_dev = {
interrupt: atkbd_interrupt,
connect: atkbd_connect,
disconnect: atkbd_disconnect
};
/*
* Module init and exit.
*/
void __init atkbd_setup(char *str, int *ints)
{
if (!ints[0]) atkbd_set = ints[1];
}
int __init atkbd_init(void)
{
serio_register_device(&atkbd_dev);
return 0;
}
void __exit atkbd_exit(void)
{
serio_unregister_device(&atkbd_dev);
}
module_init(atkbd_init);
module_exit(atkbd_exit);
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