hid-input.c
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上传日期:2013-02-24
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- /*
- * $Id: hid-input.c,v 1.5 2001/05/23 09:25:02 vojtech Exp $
- *
- * Copyright (c) 2000-2001 Vojtech Pavlik
- *
- * USB HID to Linux Input mapping module
- *
- * 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/module.h>
- #include <linux/slab.h>
- #include <linux/init.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, 84, 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, 85, 89, 90, 91, 92, 93, 94, 95,
- 120,121,122,123,134,138,130,132,128,129,131,137,133,135,136,113,
- 115,114,unk,unk,unk,124,unk,181,182,183,184,185,186,187,188,189,
- 190,191,192,193,194,195,196,197,198,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 void hidinput_configure_usage(struct hid_device *device, struct hid_field *field, struct hid_usage *usage)
- {
- struct input_dev *input = &device->input;
- int max;
- 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 */
- 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 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 0x0e2: usage->code = KEY_MUTE; 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;
- }
- usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
- break;
- default:
- unknown:
- if (field->report_size == 1) {
- if (field->report->type == HID_OUTPUT_REPORT) {
- usage->code = LED_MISC;
- usage->type = EV_LED; bit = input->ledbit; max = LED_MAX;
- break;
- }
- usage->code = BTN_MISC;
- usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
- break;
- }
- if (field->flags & HID_MAIN_ITEM_RELATIVE) {
- usage->code = REL_MISC;
- usage->type = EV_REL; bit = input->relbit; max = REL_MAX;
- break;
- }
- usage->code = ABS_MISC;
- usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;
- break;
- }
- set_bit(usage->type, input->evbit);
- while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
- usage->code = find_next_zero_bit(bit, max + 1, usage->code);
- }
- if (usage->code > max) return;
- if (usage->type == EV_ABS) {
- int a = field->logical_minimum;
- int b = field->logical_maximum;
- input->absmin[usage->code] = a;
- input->absmax[usage->code] = b;
- input->absfuzz[usage->code] = (b - a) >> 8;
- input->absflat[usage->code] = (b - a) >> 4;
- }
- if (usage->hat_min != usage->hat_max) {
- int i;
- for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
- input->absmax[i] = 1;
- input->absmin[i] = -1;
- input->absfuzz[i] = 0;
- input->absflat[i] = 0;
- }
- set_bit(usage->code + 1, input->absbit);
- }
- }
- void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
- {
- struct input_dev *input = &hid->input;
- int *quirks = &hid->quirks;
- if (usage->hat_min != usage->hat_max) {
- value = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
- if (value < 0 || value > 8) value = 0;
- input_event(input, usage->type, usage->code , hid_hat_to_axis[value].x);
- input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[value].y);
- return;
- }
- if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
- *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
- return;
- }
- if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
- if (value) {
- input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
- return;
- }
- input_event(input, usage->type, usage->code, 0);
- input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
- return;
- }
- if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
- int a = field->logical_minimum;
- int b = field->logical_maximum;
- input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
- }
- if((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UKNOWN */
- return;
- input_event(input, usage->type, usage->code, value);
- if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
- input_event(input, usage->type, usage->code, 0);
- }
- static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
- {
- struct hid_device *hid = dev->private;
- struct hid_field *field = NULL;
- int offset;
- if ((offset = hid_find_field(hid, type, code, &field)) == -1) {
- warn("event field not found");
- return -1;
- }
- hid_set_field(field, offset, value);
- hid_write_report(hid, field->report);
- return 0;
- }
- static int hidinput_open(struct input_dev *dev)
- {
- struct hid_device *hid = dev->private;
- return hid_open(hid);
- }
- static void hidinput_close(struct input_dev *dev)
- {
- struct hid_device *hid = dev->private;
- hid_close(hid);
- }
- /*
- * Register the input device; print a message.
- * Configure the input layer interface
- * Read all reports and initalize the absoulte field values.
- */
- int hidinput_connect(struct hid_device *hid)
- {
- struct usb_device *dev = hid->dev;
- struct hid_report_enum *report_enum;
- struct hid_report *report;
- struct list_head *list;
- int i, j, k;
- for (i = 0; i < hid->maxapplication; i++)
- if (IS_INPUT_APPLICATION(hid->application[i]))
- break;
- if (i == hid->maxapplication)
- return -1;
- hid->input.private = hid;
- hid->input.event = hidinput_input_event;
- hid->input.open = hidinput_open;
- hid->input.close = hidinput_close;
- hid->input.name = hid->name;
- hid->input.idbus = BUS_USB;
- hid->input.idvendor = dev->descriptor.idVendor;
- hid->input.idproduct = dev->descriptor.idProduct;
- hid->input.idversion = dev->descriptor.bcdDevice;
- for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
- report_enum = hid->report_enum + k;
- list = report_enum->report_list.next;
- while (list != &report_enum->report_list) {
- report = (struct hid_report *) list;
- for (i = 0; i < report->maxfield; i++)
- for (j = 0; j < report->field[i]->maxusage; j++)
- hidinput_configure_usage(hid, report->field[i], report->field[i]->usage + j);
- list = list->next;
- }
- }
- input_register_device(&hid->input);
- return 0;
- }
- void hidinput_disconnect(struct hid_device *hid)
- {
- input_unregister_device(&hid->input);
- }