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/*
* $Id: maple_keyb.c,v 1.4 2004/03/22 01:18:15 lethal Exp $
* SEGA Dreamcast keyboard driver
* Based on drivers/usb/usbkbd.c
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/maple.h>
MODULE_AUTHOR("YAEGASHI Takeshi <t@keshi.org>");
MODULE_DESCRIPTION("SEGA Dreamcast keyboard driver");
MODULE_LICENSE("GPL");
static unsigned char dc_kbd_keycode[256] = {
0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0,
122,123, 90, 91, 85, 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, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
150,158,159,128,136,177,178,176,142,152,173,140
};
struct dc_kbd {
struct input_dev dev;
unsigned char new[8];
unsigned char old[8];
int open;
};
static void dc_scan_kbd(struct dc_kbd *kbd)
{
int i;
struct input_dev *dev = &kbd->dev;
for(i=0; i<8; i++)
input_report_key(dev,
dc_kbd_keycode[i+224],
(kbd->new[0]>>i)&1);
for(i=2; i<8; i++) {
if(kbd->old[i]>3&&memscan(kbd->new+2, kbd->old[i], 6)==NULL) {
if(dc_kbd_keycode[kbd->old[i]])
input_report_key(dev,
dc_kbd_keycode[kbd->old[i]],
0);
else
printk("Unknown key (scancode %#x) released.",
kbd->old[i]);
}
if(kbd->new[i]>3&&memscan(kbd->old+2, kbd->new[i], 6)!=NULL) {
if(dc_kbd_keycode[kbd->new[i]])
input_report_key(dev,
dc_kbd_keycode[kbd->new[i]],
1);
else
printk("Unknown key (scancode %#x) pressed.",
kbd->new[i]);
}
}
input_sync(dev);
memcpy(kbd->old, kbd->new, 8);
}
static void dc_kbd_callback(struct mapleq *mq)
{
struct maple_device *mapledev = mq->dev;
struct dc_kbd *kbd = mapledev->private_data;
unsigned long *buf = mq->recvbuf;
if (buf[1] == mapledev->function) {
memcpy(kbd->new, buf+2, 8);
dc_scan_kbd(kbd);
}
}
static int dc_kbd_open(struct input_dev *dev)
{
struct dc_kbd *kbd = dev->private;
kbd->open++;
return 0;
}
static void dc_kbd_close(struct input_dev *dev)
{
struct dc_kbd *kbd = dev->private;
kbd->open--;
}
static int dc_kbd_connect(struct maple_device *dev)
{
int i;
unsigned long data = be32_to_cpu(dev->devinfo.function_data[0]);
struct dc_kbd *kbd;
if (!(kbd = kmalloc(sizeof(struct dc_kbd), GFP_KERNEL)))
return -1;
memset(kbd, 0, sizeof(struct dc_kbd));
dev->private_data = kbd;
kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
init_input_dev(&kbd->dev);
for (i=0; i<255; i++)
set_bit(dc_kbd_keycode[i], kbd->dev.keybit);
clear_bit(0, kbd->dev.keybit);
kbd->dev.private = kbd;
kbd->dev.open = dc_kbd_open;
kbd->dev.close = dc_kbd_close;
kbd->dev.event = NULL;
kbd->dev.name = dev->product_name;
kbd->dev.id.bustype = BUS_MAPLE;
input_register_device(&kbd->dev);
maple_getcond_callback(dev, dc_kbd_callback, 1, MAPLE_FUNC_KEYBOARD);
printk(KERN_INFO "input: keyboard(0x%lx): %s\n", data, kbd->dev.name);
return 0;
}
static void dc_kbd_disconnect(struct maple_device *dev)
{
struct dc_kbd *kbd = dev->private_data;
input_unregister_device(&kbd->dev);
kfree(kbd);
}
static struct maple_driver dc_kbd_driver = {
.function = MAPLE_FUNC_KEYBOARD,
.name = "Dreamcast keyboard",
.connect = dc_kbd_connect,
.disconnect = dc_kbd_disconnect,
};
static int __init dc_kbd_init(void)
{
maple_register_driver(&dc_kbd_driver);
return 0;
}
static void __exit dc_kbd_exit(void)
{
maple_unregister_driver(&dc_kbd_driver);
}
module_init(dc_kbd_init);
module_exit(dc_kbd_exit);
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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