WebSVN - shark - Rev 846 - /shark/branches/xen/drivers/usb/input/hid-input.c

/*
* $Id: hid-input.c,v 1.1 2004-09-13 15:04:47 giacomo 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 <vojtech@ucw.cz>, or by paper mail:
* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
*/

#include <linuxcomp.h>

#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, 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 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);
set_bit(FF_PERIODIC, input->ffbit); break;
case 0x40: set_bit(FF_SPRING, input->ffbit); break;
case 0x41: set_bit(FF_DAMPER, input->ffbit); break;
case 0x42: set_bit(FF_INERTIA , input->ffbit); break;
case 0x43: set_bit(FF_FRICTION, input->ffbit); break;
case 0x7e: usage->code = FF_GAIN; break;
case 0x83: /* Simultaneous Effects Max */
input->ff_effects_max = (field->value[0]);
dbg("Maximum Effects - %d",input->ff_effects_max);
break;
case 0x98: /* Device Control */
usage->code = FF_AUTOCENTER; break;
case 0xa4: /* Safety Switch */
usage->code = BTN_DEAD;
bit = input->keybit;
usage->type = EV_KEY;
max = KEY_MAX;
dbg("Safety Switch Report\n");
break;
case 0x9f: /* Device Paused */
case 0xa0: /* Actuators Enabled */
dbg("Not telling the input API about ");
resolv_usage(usage->hid);
return;
}
break;
default:
unknown:
resolv_usage(usage->hid);

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);
if ((usage->type == EV_REL)
&& (device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK)
&& (usage->code == REL_WHEEL)) {
set_bit(REL_HWHEEL, bit);
}

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;

if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
a = field->logical_minimum = 0;
b = field->logical_maximum = 255;
}

input->absmin[usage->code] = a;
input->absmax[usage->code] = b;
input->absfuzz[usage->code] = 0;
input->absflat[usage->code] = 0;

if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) {
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 pt_regs *regs)
{
struct input_dev *input = find_input(hid, field);
int *quirks = &hid->quirks;

if (!input)
return;

input_regs(input, regs);

if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK)
&& (usage->code == BTN_BACK)) {
if (value)
hid->quirks |= HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
else
hid->quirks &= ~HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
return;
}
if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_ON)
&& (usage->code == REL_WHEEL)) {
input_event(input, usage->type, REL_HWHEEL, value);
return;
}

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->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
input->ff_effects_max = value;
dbg("Maximum Effects - %d",input->ff_effects_max);
return;
}
if (usage->hid == (HID_UP_PID | 0x7fUL)) {
dbg("PID Pool Report\n");
return;
}

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);
}

void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
{
struct list_head *lh;
struct hid_input *hidinput;

list_for_each (lh, &hid->inputs) {
hidinput = list_entry(lh, struct hid_input, list);
input_sync(&hidinput->input);
}
}

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 (type == EV_FF)
return hid_ff_event(hid, dev, type, code, value);

if ((offset = hid_find_field(hid, type, code, &field)) == -1) {
warn("event field not found");
return -1;
}

hid_set_field(field, offset, value);
hid_submit_report(hid, field->report, USB_DIR_OUT);

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 initialize the absolute 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;
struct hid_input *hidinput = NULL;
int i, j, k;

INIT_LIST_HEAD(&hid->inputs);

for (i = 0; i < hid->maxcollection; i++)
if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
IS_INPUT_APPLICATION(hid->collection[i].usage))
break;

if (i == hid->maxcollection)
return -1;

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;

if (!report->maxfield)
continue;

if (!hidinput) {
hidinput = kmalloc(sizeof(*hidinput), GFP_KERNEL);
if (!hidinput) {
err("Out of memory during hid input probe");
return -1;
}
memset(hidinput, 0, sizeof(*hidinput));

list_add_tail(&hidinput->list, &hid->inputs);

hidinput->input.private = hid;
hidinput->input.event = hidinput_input_event;
hidinput->input.open = hidinput_open;
hidinput->input.close = hidinput_close;

hidinput->input.name = hid->name;
hidinput->input.phys = hid->phys;
hidinput->input.uniq = hid->uniq;
hidinput->input.id.bustype = BUS_USB;
hidinput->input.id.vendor = dev->descriptor.idVendor;
hidinput->input.id.product = dev->descriptor.idProduct;
hidinput->input.id.version = dev->descriptor.bcdDevice;
}

for (i = 0; i < report->maxfield; i++)
for (j = 0; j < report->field[i]->maxusage; j++)
hidinput_configure_usage(hidinput, report->field[i],
report->field[i]->usage + j);

if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
/* This will leave hidinput NULL, so that it
* allocates another one if we have more inputs on
* the same interface. Some devices (e.g. Happ's
* UGCI) cram a lot of unrelated inputs into the
* same interface. */
hidinput->report = report;
input_register_device(&hidinput->input);
hidinput = NULL;
}

list = list->next;
}
}

/* This only gets called when we are a single-input (most of the
* time). IOW, not a HID_QUIRK_MULTI_INPUT. The hid_ff_init() is
* only useful in this case, and not for multi-input quirks. */
if (hidinput) {
hid_ff_init(hid);
input_register_device(&hidinput->input);
}

return 0;
}

void hidinput_disconnect(struct hid_device *hid)
{
struct list_head *lh, *next;
struct hid_input *hidinput;

list_for_each_safe (lh, next, &hid->inputs) {
hidinput = list_entry(lh, struct hid_input, list);
input_unregister_device(&hidinput->input);
list_del(&hidinput->list);
kfree(hidinput);
}
}

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