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/*

 * $Id: keybdev.c,v 1.1.1.1 2004-04-15 02:18:53 phoenix Exp $

 *

 *  Copyright (c) 1999-2000 Vojtech Pavlik

 *

 *  Input driver to keyboard driver binding.

 *

 *  Sponsored by SuSE

 */

/*

 * 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 <vojtech@suse.cz>, or by paper mail:

 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic

 */

#include <linux/config.h>

#include <linux/kbd_ll.h>

#include <linux/input.h>

#include <linux/slab.h>

#include <linux/init.h>

#include <linux/tty.h>

#include <linux/module.h>

#include <linux/kbd_kern.h>

#if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(__alpha__) || \

    defined(__mips__) || defined(CONFIG_SPARC64) || defined(CONFIG_SUPERH) || \

    defined(CONFIG_PPC) || defined(__mc68000__) || defined(__hppa__) || \

    defined(__arm__)

static int x86_sysrq_alt = 0;

#ifdef CONFIG_SPARC64

static int sparc_l1_a_state = 0;

extern void batten_down_hatches(void);

#endif

static int jp_kbd_109 = 1;      /* Yes, .jp is the default. See 51142. */

static unsigned short x86_keycodes[256] =

        { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,

         16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,

         32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,

         48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,

         64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,

         80, 81, 82, 83, 43, 85, 86, 87, 88,115,119,120,121,375,123, 90,

        284,285,309,298,312, 91,327,328,329,331,333,335,336,337,338,339,

        367,294,293,286,350, 92,334,512,116,377,109,111,373,347,348,349,

        360, 93, 94, 95, 98,376,100,101,357,316,354,304,289,102,351,355,

        103,104,105,275,281,272,306,106,274,107,288,364,358,363,362,361,

        291,108,381,290,287,292,279,305,280, 99,112,257,258,113,270,114,

        118,117,125,374,379,259,260,261,262,263,264,265,266,267,268,269,

        271,273,276,277,278,282,283,295,296,297,299,300,301,302,303,307,

        308,310,313,314,315,317,318,319,320,321,322,323,324,325,326,330,

        332,340,341,342,343,344,345,346,356,359,365,368,369,370,371,372 };

#ifdef CONFIG_MAC_EMUMOUSEBTN

extern int mac_hid_mouse_emulate_buttons(int, int, int);

#endif /* CONFIG_MAC_EMUMOUSEBTN */

#ifdef CONFIG_MAC_ADBKEYCODES

extern int mac_hid_keyboard_sends_linux_keycodes(void);

#else

#define mac_hid_keyboard_sends_linux_keycodes() 0

#endif /* CONFIG_MAC_ADBKEYCODES */

#if defined(CONFIG_MAC_ADBKEYCODES) || defined(CONFIG_ADB_KEYBOARD)

static unsigned char mac_keycodes[256] = {

          0, 53, 18, 19, 20, 21, 23, 22, 26, 28, 25, 29, 27, 24, 51, 48,

         12, 13, 14, 15, 17, 16, 32, 34, 31, 35, 33, 30, 36, 54,128,  1,

          2,  3,  5,  4, 38, 40, 37, 41, 39, 50, 56, 42,  6,  7,  8,  9,

         11, 45, 46, 43, 47, 44,123, 67, 58, 49, 57,122,120, 99,118, 96,

         97, 98,100,101,109, 71,107, 89, 91, 92, 78, 86, 87, 88, 69, 83,

         84, 85, 82, 65, 42,  0, 10,103,111,  0,  0,  0,  0,  0,  0,  0,

         76,125, 75,105,124,110,115, 62,116, 59, 60,119, 61,121,114,117,

          0,  0,  0,  0,127, 81,  0,113,  0,  0,  0,  0, 95, 55, 55,  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, 94,  0, 93,  0,  0,  0,  0,  0,  0,104,102 };

#endif  /* CONFIG_MAC_ADBKEYCODES || CONFIG_ADB_KEYBOARD */

static int emulate_raw(unsigned int keycode, int down)

{

#ifdef CONFIG_MAC_EMUMOUSEBTN

        if (mac_hid_mouse_emulate_buttons(1, keycode, down))

                return 0;

#endif /* CONFIG_MAC_EMUMOUSEBTN */

#if defined(CONFIG_MAC_ADBKEYCODES) || defined(CONFIG_ADB_KEYBOARD)

        if (!mac_hid_keyboard_sends_linux_keycodes()) {

                if (keycode > 255 || !mac_keycodes[keycode])

                        return -1;

                handle_scancode((mac_keycodes[keycode] & 0x7f), down);

                return 0;

        }

#endif  /* CONFIG_MAC_ADBKEYCODES || CONFIG_ADB_KEYBOARD */

        if (keycode > 255 || !x86_keycodes[keycode])

                return -1;

        if (keycode == KEY_PAUSE) {

                handle_scancode(0xe1, 1);

                handle_scancode(0x1d, down);

                handle_scancode(0x45, down);

                return 0;

        }

        if (keycode == KEY_SYSRQ && x86_sysrq_alt) {

                handle_scancode(0x54, down);

                return 0;

        }

#ifdef CONFIG_SPARC64

        if (keycode == KEY_A && sparc_l1_a_state) {

                sparc_l1_a_state = 0;

                batten_down_hatches();

        }

#endif

        if (x86_keycodes[keycode] & 0x100)

                handle_scancode(0xe0, 1);

        handle_scancode(x86_keycodes[keycode] & 0x7f, down);

        if (keycode == KEY_SYSRQ) {

                handle_scancode(0xe0, 1);

                handle_scancode(0x37, down);

        }

        if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)

                x86_sysrq_alt = down;

#ifdef CONFIG_SPARC64

        if (keycode == KEY_STOP)

                sparc_l1_a_state = down;

#endif

        return 0;

}

#endif /* CONFIG_X86 || CONFIG_IA64 || __alpha__ || __mips__ || CONFIG_PPC */

static struct input_handler keybdev_handler;

static unsigned int ledstate = 0xff;

void keybdev_ledfunc(unsigned int led)

{

        struct input_handle *handle;

        ledstate = led;

        for (handle = keybdev_handler.handle; handle; handle = handle->hnext) {

                input_event(handle->dev, EV_LED, LED_SCROLLL, !!(led & 0x01));

                input_event(handle->dev, EV_LED, LED_NUML,    !!(led & 0x02));

                input_event(handle->dev, EV_LED, LED_CAPSL,   !!(led & 0x04));

        }

}

void keybdev_event(struct input_handle *handle, unsigned int type, unsigned int code, int down)

{

        if (type != EV_KEY) return;

        if (emulate_raw(code, down))

                if(code < BTN_MISC)

                        printk(KERN_WARNING "keybdev.c: can't emulate rawmode for keycode %d\n", code);

        tasklet_schedule(&keyboard_tasklet);

}

static struct input_handle *keybdev_connect(struct input_handler *handler, struct input_dev *dev)

{

        struct input_handle *handle;

        int i;

        if (!test_bit(EV_KEY, dev->evbit))

                return NULL;

        for (i = KEY_RESERVED; i < BTN_MISC; i++)

                if (test_bit(i, dev->keybit)) break;

        if (i == BTN_MISC)

                return NULL;

        if (!(handle = kmalloc(sizeof(struct input_handle), GFP_KERNEL)))

                return NULL;

        memset(handle, 0, sizeof(struct input_handle));

        handle->dev = dev;

        handle->handler = handler;

        input_open_device(handle);

//      printk(KERN_INFO "keybdev.c: Adding keyboard: input%d\n", dev->number);

        if (ledstate != 0xff) {

                input_event(dev, EV_LED, LED_SCROLLL, !!(ledstate & 0x01));

                input_event(dev, EV_LED, LED_NUML,    !!(ledstate & 0x02));

                input_event(dev, EV_LED, LED_CAPSL,   !!(ledstate & 0x04));

        }

        return handle;

}

static void keybdev_disconnect(struct input_handle *handle)

{

//      printk(KERN_INFO "keybdev.c: Removing keyboard: input%d\n", handle->dev->number);

        input_close_device(handle);

        kfree(handle);

}

static struct input_handler keybdev_handler = {

        event:          keybdev_event,

        connect:        keybdev_connect,

        disconnect:     keybdev_disconnect,

};

static int __init keybdev_init(void)

{

        input_register_handler(&keybdev_handler);

        kbd_ledfunc = keybdev_ledfunc;

        kbd_refresh_leds();

        if (jp_kbd_109) {

                x86_keycodes[0xb5] = 0x73;      /* backslash, underscore */

                x86_keycodes[0xb6] = 0x70;

                x86_keycodes[0xb7] = 0x7d;      /* Yen, pipe */

                x86_keycodes[0xb8] = 0x79;

                x86_keycodes[0xb9] = 0x7b;

        }

        return 0;

}

static void __exit keybdev_exit(void)

{

        kbd_ledfunc = NULL;

        input_unregister_handler(&keybdev_handler);

}

module_init(keybdev_init);

module_exit(keybdev_exit);

MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");

MODULE_DESCRIPTION("Input driver to keyboard driver binding");

MODULE_PARM(jp_kbd_109, "i");

MODULE_LICENSE("GPL");