hid-input.c

优龙2410linux2.6.8内核源代码

/*
 * $Id: hid-input.c,v 1.2 2002/04/23 00:59:25 rdamazio Exp $
 *
 *  Copyright (c) 2000-2001 Vojtech Pavlik
 *
 *  USB HID to Linux Input mapping
 */

/*
 * 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 <[e-mail]>, or by paper mail:
 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/input.h>
#include <linux/usb.h>

#include "hid.h"

#define unk	KEY_UNKNOWN

static unsigned char hid_keyboard[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,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
	122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
	 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,unk,unk,unk,unk
};

static struct {
	__s32 x;
	__s32 y;
}  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};

static struct input_dev *find_input(struct hid_device *hid, struct hid_field *field)
{
	struct list_head *lh;
	struct hid_input *hidinput;

	list_for_each (lh, &hid->inputs) {
		int i;

		hidinput = list_entry(lh, struct hid_input, list);

		if (! hidinput->report)
			continue;

		for (i = 0; i < hidinput->report->maxfield; i++)
			if (hidinput->report->field[i] == field)
				return &hidinput->input;
	}

	/* Assume we only have one input and use it */
	if (!list_empty(&hid->inputs)) {
		hidinput = list_entry(hid->inputs.next, struct hid_input, list);
		return &hidinput->input;
	}

	/* This is really a bug */
	return NULL;
}

static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
				     struct hid_usage *usage)
{
	struct input_dev *input = &hidinput->input;
	struct hid_device *device = hidinput->input.private;
	int max;
	int is_abs = 0;
	unsigned long *bit;

	switch (usage->hid & HID_USAGE_PAGE) {

		case HID_UP_KEYBOARD:

			set_bit(EV_REP, input->evbit);
			usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;

			if ((usage->hid & HID_USAGE) < 256) {
				if (!(usage->code = hid_keyboard[usage->hid & HID_USAGE]))
					return;
				clear_bit(usage->code, bit);
			} else
				usage->code = KEY_UNKNOWN;

			break;

		case HID_UP_BUTTON:

			usage->code = ((usage->hid - 1) & 0xf) + 0x100;
			usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;

			switch (field->application) {
				case HID_GD_GAMEPAD:  usage->code += 0x10;
				case HID_GD_JOYSTICK: usage->code += 0x10;
				case HID_GD_MOUSE:    usage->code += 0x10; break;
				default:
					if (field->physical == HID_GD_POINTER)
						usage->code += 0x10;
					break;
			}
			break;

		case HID_UP_GENDESK:

			if ((usage->hid & 0xf0) == 0x80) {	/* SystemControl */
				switch (usage->hid & 0xf) {
					case 0x1: usage->code = KEY_POWER;  break;
					case 0x2: usage->code = KEY_SLEEP;  break;
					case 0x3: usage->code = KEY_WAKEUP; break;
					default: usage->code = KEY_UNKNOWN; break;
				}
				usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
				break;
			}

			usage->code = usage->hid & 0xf;

			if (field->report_size == 1) {
				usage->code = BTN_MISC;
				usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
				break;
			}

			if (field->flags & HID_MAIN_ITEM_RELATIVE) {
				usage->type = EV_REL; bit = input->relbit; max = REL_MAX;
				break;
			}

			usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;

			if (usage->hid == HID_GD_HATSWITCH) {
				usage->code = ABS_HAT0X;
				usage->hat_min = field->logical_minimum;
				usage->hat_max = field->logical_maximum;
			}
			break;

		case HID_UP_LED:

			usage->code = (usage->hid - 1) & 0xf;
			usage->type = EV_LED; bit = input->ledbit; max = LED_MAX;
			break;

		case HID_UP_DIGITIZER:

			switch (usage->hid & 0xff) {

				case 0x30: /* TipPressure */

					if (!test_bit(BTN_TOUCH, input->keybit)) {
						device->quirks |= HID_QUIRK_NOTOUCH;
						set_bit(EV_KEY, input->evbit);
						set_bit(BTN_TOUCH, input->keybit);
					}
					usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;
					usage->code = ABS_PRESSURE;
					clear_bit(usage->code, bit);
					break;

				case 0x32: /* InRange */

					usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
					switch (field->physical & 0xff) {
						case 0x21: usage->code = BTN_TOOL_MOUSE; break;
						case 0x22: usage->code = BTN_TOOL_FINGER; break;
						default: usage->code = BTN_TOOL_PEN; break;
					}
					break;

				case 0x3c: /* Invert */

					usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
					usage->code = BTN_TOOL_RUBBER;
					clear_bit(usage->code, bit);
					break;

				case 0x33: /* Touch */
				case 0x42: /* TipSwitch */
				case 0x43: /* TipSwitch2 */

					device->quirks &= ~HID_QUIRK_NOTOUCH;
					usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
					usage->code = BTN_TOUCH;
					clear_bit(usage->code, bit);
					break;

				case 0x44: /* BarrelSwitch */

					usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
					usage->code = BTN_STYLUS;
					clear_bit(usage->code, bit);
					break;

				default:  goto unknown;
			}
			break;

		case HID_UP_CONSUMER:	/* USB HUT v1.1, pages 56-62 */

			set_bit(EV_REP, input->evbit);
			switch (usage->hid & HID_USAGE) {
				case 0x000: usage->code = 0; break;
				case 0x034: usage->code = KEY_SLEEP;		break;
				case 0x036: usage->code = BTN_MISC;		break;
				case 0x08a: usage->code = KEY_WWW;		break;
				case 0x095: usage->code = KEY_HELP;		break;

				case 0x0b0: usage->code = KEY_PLAY;		break;
				case 0x0b1: usage->code = KEY_PAUSE;		break;
				case 0x0b2: usage->code = KEY_RECORD;		break;
				case 0x0b3: usage->code = KEY_FASTFORWARD;	break;
				case 0x0b4: usage->code = KEY_REWIND;		break;
				case 0x0b5: usage->code = KEY_NEXTSONG;		break;
				case 0x0b6: usage->code = KEY_PREVIOUSSONG;	break;
				case 0x0b7: usage->code = KEY_STOPCD;		break;
				case 0x0b8: usage->code = KEY_EJECTCD;		break;
				case 0x0cd: usage->code = KEY_PLAYPAUSE;	break;
			        case 0x0e0: is_abs = 1;
					    usage->code = ABS_VOLUME;
					    break;
				case 0x0e2: usage->code = KEY_MUTE;		break;
				case 0x0e5: usage->code = KEY_BASSBOOST;	break;
				case 0x0e9: usage->code = KEY_VOLUMEUP;		break;
				case 0x0ea: usage->code = KEY_VOLUMEDOWN;	break;

				case 0x183: usage->code = KEY_CONFIG;		break;
				case 0x18a: usage->code = KEY_MAIL;		break;
				case 0x192: usage->code = KEY_CALC;		break;
				case 0x194: usage->code = KEY_FILE;		break;
				case 0x21a: usage->code = KEY_UNDO;		break;
				case 0x21b: usage->code = KEY_COPY;		break;
				case 0x21c: usage->code = KEY_CUT;		break;
				case 0x21d: usage->code = KEY_PASTE;		break;

				case 0x221: usage->code = KEY_FIND;		break;
				case 0x223: usage->code = KEY_HOMEPAGE;		break;
				case 0x224: usage->code = KEY_BACK;		break;
				case 0x225: usage->code = KEY_FORWARD;		break;
				case 0x226: usage->code = KEY_STOP;		break;
				case 0x227: usage->code = KEY_REFRESH;		break;
				case 0x22a: usage->code = KEY_BOOKMARKS;	break;

				default:    usage->code = KEY_UNKNOWN;		break;
			}

			if (is_abs) {
			        usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;
			} else  {
				usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
			}
			break;

		case HID_UP_HPVENDOR:	/* Reported on a Dutch layout HP5308 */

			set_bit(EV_REP, input->evbit);
			switch (usage->hid & HID_USAGE) {
			        case 0x021: usage->code = KEY_PRINT;            break;
				case 0x070: usage->code = KEY_HP;		break;
				case 0x071: usage->code = KEY_CAMERA;		break;
				case 0x072: usage->code = KEY_SOUND;		break;
				case 0x073: usage->code = KEY_QUESTION;		break;

				case 0x080: usage->code = KEY_EMAIL;		break;
				case 0x081: usage->code = KEY_CHAT;		break;
				case 0x082: usage->code = KEY_SEARCH;		break;
				case 0x083: usage->code = KEY_CONNECT;	        break;
				case 0x084: usage->code = KEY_FINANCE;		break;
				case 0x085: usage->code = KEY_SPORT;		break;
				case 0x086: usage->code = KEY_SHOP;	        break;

				default:    usage->code = KEY_UNKNOWN;		break;

			}

			usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
			break;
			
		case HID_UP_PID:

			usage->type = EV_FF; bit = input->ffbit; max = FF_MAX;
			
			switch(usage->hid & HID_USAGE) {
				case 0x26: set_bit(FF_CONSTANT, input->ffbit); break;
				case 0x27: set_bit(FF_RAMP,     input->ffbit); break;
				case 0x28: set_bit(FF_CUSTOM,   input->ffbit); break;
				case 0x30: set_bit(FF_SQUARE,   input->ffbit);
				           set_bit(FF_PERIODIC, input->ffbit); break;
				case 0x31: set_bit(FF_SINE,     input->ffbit);
				           set_bit(FF_PERIODIC, input->ffbit); break;
				case 0x32: set_bit(FF_TRIANGLE, input->ffbit);
				           set_bit(FF_PERIODIC, input->ffbit); break;
				case 0x33: set_bit(FF_SAW_UP,   input->ffbit);
				           set_bit(FF_PERIODIC, input->ffbit); break;
				case 0x34: set_bit(FF_SAW_DOWN, input->ffbit);