Release 4.11 drivers/input/keyboard/atkbd.c
/*
* 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/slab.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/serio.h>
#include <linux/workqueue.h>
#include <linux/libps2.h>
#include <linux/mutex.h>
#include <linux/dmi.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 bool atkbd_reset;
#else
static bool atkbd_reset = true;
#endif
module_param_named(reset, atkbd_reset, bool, 0);
MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
static bool atkbd_softrepeat;
module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
static bool atkbd_softraw = true;
module_param_named(softraw, atkbd_softraw, bool, 0);
MODULE_PARM_DESC(softraw, "Use software generated rawmode");
static bool atkbd_scroll;
module_param_named(scroll, atkbd_scroll, bool, 0);
MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
static bool 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");
static bool atkbd_terminal;
module_param_named(terminal, atkbd_terminal, bool, 0);
MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2");
/*
* Scancode to keycode tables. These are just the default setting, and
* are loadable via a userland utility.
*/
#define ATKBD_KEYMAP_SIZE 512
static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {
#ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
/* XXX: need a more general approach */
#include "hpps2atkbd.h" /* include the keyboard scancodes */
#else
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, 0,172,166, 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 const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = {
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,
0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
148,149,147,140
};
static const unsigned short 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
/* Reset to defaults and disable */
#define ATKBD_CMD_RESET_DEF 0x00f6
/* Reset to defaults */
#define ATKBD_CMD_SETALL_MB 0x00f8
/* Set all keys to give break codes */
#define ATKBD_CMD_SETALL_MBR 0x00fa
/* ... and repeat */
#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_HANJA 0xf1
#define ATKBD_RET_HANGEUL 0xf2
#define ATKBD_RET_ERR 0xff
#define ATKBD_KEY_UNKNOWN 0
#define ATKBD_KEY_NULL 255
#define ATKBD_SCR_1 0xfffe
#define ATKBD_SCR_2 0xfffd
#define ATKBD_SCR_4 0xfffc
#define ATKBD_SCR_8 0xfffb
#define ATKBD_SCR_CLICK 0xfffa
#define ATKBD_SCR_LEFT 0xfff9
#define ATKBD_SCR_RIGHT 0xfff8
#define ATKBD_SPECIAL ATKBD_SCR_RIGHT
#define ATKBD_LED_EVENT_BIT 0
#define ATKBD_REP_EVENT_BIT 1
#define ATKBD_XL_ERR 0x01
#define ATKBD_XL_BAT 0x02
#define ATKBD_XL_ACK 0x04
#define ATKBD_XL_NAK 0x08
#define ATKBD_XL_HANGEUL 0x10
#define ATKBD_XL_HANJA 0x20
static const struct {
unsigned short keycode;
unsigned char set2;
}
atkbd_scroll_keys[] = {
{ ATKBD_SCR_1, 0xc5 },
{ ATKBD_SCR_2, 0x9d },
{ ATKBD_SCR_4, 0xa4 },
{ ATKBD_SCR_8, 0x9b },
{ ATKBD_SCR_CLICK, 0xe0 },
{ ATKBD_SCR_LEFT, 0xcb },
{ ATKBD_SCR_RIGHT, 0xd2 },
};
/*
* The atkbd control structure
*/
struct atkbd {
struct ps2dev ps2dev;
struct input_dev *dev;
/* Written only during init */
char name[64];
char phys[32];
unsigned short id;
unsigned short keycode[ATKBD_KEYMAP_SIZE];
DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE);
unsigned char set;
bool translated;
bool extra;
bool write;
bool softrepeat;
bool softraw;
bool scroll;
bool enabled;
/* Accessed only from interrupt */
unsigned char emul;
bool resend;
bool release;
unsigned long xl_bit;
unsigned int last;
unsigned long time;
unsigned long err_count;
struct delayed_work event_work;
unsigned long event_jiffies;
unsigned long event_mask;
/* Serializes reconnect(), attr->set() and event work */
struct mutex mutex;
};
/*
* System-specific keymap fixup routine
*/
static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
static void *atkbd_platform_fixup_data;
static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int);
/*
* Certain keyboards to not like ATKBD_CMD_RESET_DIS and stop responding
* to many commands until full reset (ATKBD_CMD_RESET_BAT) is performed.
*/
static bool atkbd_skip_deactivate;
static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
ssize_t (*handler)(struct atkbd *, char *));
static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
ssize_t (*handler)(struct atkbd *, const char *, size_t));
#define ATKBD_DEFINE_ATTR(_name) \
static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
static ssize_t atkbd_do_show_##_name(struct device *d, \
struct device_attribute *attr, char *b) \
{ \
return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
} \
static ssize_t atkbd_do_set_##_name(struct device *d, \
struct device_attribute *attr, const char *b, size_t s) \
{ \
return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
} \
static struct device_attribute atkbd_attr_##_name = \
__ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
ATKBD_DEFINE_ATTR(extra);
ATKBD_DEFINE_ATTR(force_release);
ATKBD_DEFINE_ATTR(scroll);
ATKBD_DEFINE_ATTR(set);
ATKBD_DEFINE_ATTR(softrepeat);
ATKBD_DEFINE_ATTR(softraw);
#define ATKBD_DEFINE_RO_ATTR(_name) \
static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
static ssize_t atkbd_do_show_##_name(struct device *d, \
struct device_attribute *attr, char *b) \
{ \
return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
} \
static struct device_attribute atkbd_attr_##_name = \
__ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
ATKBD_DEFINE_RO_ATTR(err_count);
static struct attribute *atkbd_attributes[] = {
&atkbd_attr_extra.attr,
&atkbd_attr_force_release.attr,
&atkbd_attr_scroll.attr,
&atkbd_attr_set.attr,
&atkbd_attr_softrepeat.attr,
&atkbd_attr_softraw.attr,
&atkbd_attr_err_count.attr,
NULL
};
static struct attribute_group atkbd_attribute_group = {
.attrs = atkbd_attributes,
};
static const unsigned int xl_table[] = {
ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
};
/*
* Checks if we should mangle the scancode to extract 'release' bit
* in translated mode.
*/
static bool atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
{
int i;
if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
return false;
for (i = 0; i < ARRAY_SIZE(xl_table); i++)
if (code == xl_table[i])
return test_bit(i, &xl_bit);
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dmitry Torokhov | 64 | 95.52% | 2 | 66.67% |
| Vojtech Pavlik | 3 | 4.48% | 1 | 33.33% |
| Total | 67 | 100.00% | 3 | 100.00% |
/*
* Calculates new value of xl_bit so the driver can distinguish
* between make/break pair of scancodes for select keys and PS/2
* protocol responses.
*/
static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
{
int i;
for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
if (!((code ^ xl_table[i]) & 0x7f)) {
if (code & 0x80)
__clear_bit(i, &atkbd->xl_bit);
else
__set_bit(i, &atkbd->xl_bit);
break;
}
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dmitry Torokhov | 63 | 76.83% | 1 | 33.33% |
| Vojtech Pavlik | 19 | 23.17% | 2 | 66.67% |
| Total | 82 | 100.00% | 3 | 100.00% |
/*
* Encode the scancode, 0xe0 prefix, and high bit into a single integer,
* keeping kernel 2.4 compatibility for set 2
*/
static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
{
if (atkbd->set == 3) {
if (atkbd->emul == 1)
code |= 0x100;
} else {
code = (code & 0x7f) | ((code & 0x80) << 1);
if (atkbd->emul == 1)
code |= 0x80;
}
return code;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dmitry Torokhov | 66 | 89.19% | 1 | 50.00% |
| Vojtech Pavlik | 8 | 10.81% | 1 | 50.00% |
| Total | 74 | 100.00% | 2 | 100.00% |
/*
* 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 atkbd *atkbd = serio_get_drvdata(serio);
struct input_dev *dev = atkbd->dev;
unsigned int code = data;
int scroll = 0, hscroll = 0, click = -1;
int value;
unsigned short keycode;
dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, flags);
#if !defined(__i386__) && !defined (__x86_64__)
if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
dev_warn(&serio->dev, "Frame/parity error: %02x\n", flags);
serio_write(serio, ATKBD_CMD_RESEND);
atkbd->resend = true;
goto out;
}
if (!flags && data == ATKBD_RET_ACK)
atkbd->resend = false;
#