154 lines
3.9 KiB
C
154 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Stowaway keyboard driver for Linux
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2006 Marek Vasut
|
|
*
|
|
* Based on Newton keyboard driver for Linux
|
|
* by Justin Cormack
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
#include <linux/input.h>
|
|
#include <linux/serio.h>
|
|
|
|
#define DRIVER_DESC "Stowaway keyboard driver"
|
|
|
|
MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#define SKBD_KEY_MASK 0x7f
|
|
#define SKBD_RELEASE 0x80
|
|
|
|
static unsigned char skbd_keycode[128] = {
|
|
KEY_1, KEY_2, KEY_3, KEY_Z, KEY_4, KEY_5, KEY_6, KEY_7,
|
|
0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_GRAVE,
|
|
KEY_X, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_SPACE,
|
|
KEY_CAPSLOCK, KEY_TAB, KEY_LEFTCTRL, 0, 0, 0, 0, 0,
|
|
0, 0, 0, KEY_LEFTALT, 0, 0, 0, 0,
|
|
0, 0, 0, 0, KEY_C, KEY_V, KEY_B, KEY_N,
|
|
KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE, KEY_HOME, KEY_8, KEY_9, KEY_0, KEY_ESC,
|
|
KEY_LEFTBRACE, KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_END, KEY_U, KEY_I, KEY_O, KEY_P,
|
|
KEY_APOSTROPHE, KEY_ENTER, KEY_PAGEUP,0, KEY_J, KEY_K, KEY_L, KEY_SEMICOLON,
|
|
KEY_SLASH, KEY_UP, KEY_PAGEDOWN, 0,KEY_M, KEY_COMMA, KEY_DOT, KEY_INSERT,
|
|
KEY_DELETE, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0,
|
|
KEY_LEFTSHIFT, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7,
|
|
KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, 0, 0, 0
|
|
};
|
|
|
|
struct skbd {
|
|
unsigned char keycode[128];
|
|
struct input_dev *dev;
|
|
struct serio *serio;
|
|
char phys[32];
|
|
};
|
|
|
|
static irqreturn_t skbd_interrupt(struct serio *serio, unsigned char data,
|
|
unsigned int flags)
|
|
{
|
|
struct skbd *skbd = serio_get_drvdata(serio);
|
|
struct input_dev *dev = skbd->dev;
|
|
|
|
if (skbd->keycode[data & SKBD_KEY_MASK]) {
|
|
input_report_key(dev, skbd->keycode[data & SKBD_KEY_MASK],
|
|
!(data & SKBD_RELEASE));
|
|
input_sync(dev);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int skbd_connect(struct serio *serio, struct serio_driver *drv)
|
|
{
|
|
struct skbd *skbd;
|
|
struct input_dev *input_dev;
|
|
int err = -ENOMEM;
|
|
int i;
|
|
|
|
skbd = kzalloc(sizeof(struct skbd), GFP_KERNEL);
|
|
input_dev = input_allocate_device();
|
|
if (!skbd || !input_dev)
|
|
goto fail1;
|
|
|
|
skbd->serio = serio;
|
|
skbd->dev = input_dev;
|
|
snprintf(skbd->phys, sizeof(skbd->phys), "%s/input0", serio->phys);
|
|
memcpy(skbd->keycode, skbd_keycode, sizeof(skbd->keycode));
|
|
|
|
input_dev->name = "Stowaway Keyboard";
|
|
input_dev->phys = skbd->phys;
|
|
input_dev->id.bustype = BUS_RS232;
|
|
input_dev->id.vendor = SERIO_STOWAWAY;
|
|
input_dev->id.product = 0x0001;
|
|
input_dev->id.version = 0x0100;
|
|
input_dev->dev.parent = &serio->dev;
|
|
|
|
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
|
|
input_dev->keycode = skbd->keycode;
|
|
input_dev->keycodesize = sizeof(unsigned char);
|
|
input_dev->keycodemax = ARRAY_SIZE(skbd_keycode);
|
|
for (i = 0; i < ARRAY_SIZE(skbd_keycode); i++)
|
|
set_bit(skbd_keycode[i], input_dev->keybit);
|
|
clear_bit(0, input_dev->keybit);
|
|
|
|
serio_set_drvdata(serio, skbd);
|
|
|
|
err = serio_open(serio, drv);
|
|
if (err)
|
|
goto fail2;
|
|
|
|
err = input_register_device(skbd->dev);
|
|
if (err)
|
|
goto fail3;
|
|
|
|
return 0;
|
|
|
|
fail3: serio_close(serio);
|
|
fail2: serio_set_drvdata(serio, NULL);
|
|
fail1: input_free_device(input_dev);
|
|
kfree(skbd);
|
|
return err;
|
|
}
|
|
|
|
static void skbd_disconnect(struct serio *serio)
|
|
{
|
|
struct skbd *skbd = serio_get_drvdata(serio);
|
|
|
|
serio_close(serio);
|
|
serio_set_drvdata(serio, NULL);
|
|
input_unregister_device(skbd->dev);
|
|
kfree(skbd);
|
|
}
|
|
|
|
static const struct serio_device_id skbd_serio_ids[] = {
|
|
{
|
|
.type = SERIO_RS232,
|
|
.proto = SERIO_STOWAWAY,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{ 0 }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(serio, skbd_serio_ids);
|
|
|
|
static struct serio_driver skbd_drv = {
|
|
.driver = {
|
|
.name = "stowaway",
|
|
},
|
|
.description = DRIVER_DESC,
|
|
.id_table = skbd_serio_ids,
|
|
.interrupt = skbd_interrupt,
|
|
.connect = skbd_connect,
|
|
.disconnect = skbd_disconnect,
|
|
};
|
|
|
|
module_serio_driver(skbd_drv);
|