leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
123656d4cc
linux/drivers/usb/input/hid-input.c
Arjan van de Ven 4c4c9432a6 [PATCH] USB: mark various usb tables const 
patch below marks various USB tables and variables as const so that they
end up in .rodata section and don't cacheline share with things that get
written to. For the non-array variables it also allows gcc to optimize
more.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-04 13:51:40 -08:00

689 lines
21 KiB
C
Raw Blame History

/*
* $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 <vojtech@ucw.cz>, 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 <linux/usb_input.h>
#undef DEBUG
#include "hid.h"
#define unk KEY_UNKNOWN
static const 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 const 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}};
#define map_abs(c) do { usage->code = c; usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; } while (0)
#define map_rel(c) do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0)
#define map_key(c) do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0)
#define map_led(c) do { usage->code = c; usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; } while (0)
#define map_ff(c) do { usage->code = c; usage->type = EV_FF; bit = input->ffbit; max = FF_MAX; } while (0)
#define map_abs_clear(c) do { map_abs(c); clear_bit(c, bit); } while (0)
#define map_key_clear(c) do { map_key(c); clear_bit(c, bit); } while (0)
#define map_ff_effect(c) do { set_bit(c, input->ffbit); } while (0)
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 = input->private;
int max = 0, code;
unsigned long *bit = NULL;
field->hidinput = hidinput;
#ifdef DEBUG
printk(KERN_DEBUG "Mapping: ");
resolv_usage(usage->hid);
printk(" ---> ");
#endif
if (field->flags & HID_MAIN_ITEM_CONSTANT)
goto ignore;
switch (usage->hid & HID_USAGE_PAGE) {
case HID_UP_UNDEFINED:
goto ignore;
case HID_UP_KEYBOARD:
set_bit(EV_REP, input->evbit);
if ((usage->hid & HID_USAGE) < 256) {
if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
} else
map_key(KEY_UNKNOWN);
break;
case HID_UP_BUTTON:
code = ((usage->hid - 1) & 0xf);
switch (field->application) {
case HID_GD_MOUSE:
case HID_GD_POINTER: code += 0x110; break;
case HID_GD_JOYSTICK: code += 0x120; break;
case HID_GD_GAMEPAD: code += 0x130; break;
default:
switch (field->physical) {
case HID_GD_MOUSE:
case HID_GD_POINTER: code += 0x110; break;
case HID_GD_JOYSTICK: code += 0x120; break;
case HID_GD_GAMEPAD: code += 0x130; break;
default: code += 0x100;
}
}
map_key(code);
break;
case HID_UP_SIMULATION:
switch (usage->hid & 0xffff) {
case 0xba: map_abs(ABS_RUDDER); break;
case 0xbb: map_abs(ABS_THROTTLE); break;
default: goto ignore;
}
break;
case HID_UP_GENDESK:
if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
switch (usage->hid & 0xf) {
case 0x1: map_key_clear(KEY_POWER); break;
case 0x2: map_key_clear(KEY_SLEEP); break;
case 0x3: map_key_clear(KEY_WAKEUP); break;
default: goto unknown;
}
break;
}
if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
switch (usage->hid) {
case HID_GD_UP: usage->hat_dir = 1; break;
case HID_GD_DOWN: usage->hat_dir = 5; break;
case HID_GD_RIGHT: usage->hat_dir = 3; break;
case HID_GD_LEFT: usage->hat_dir = 7; break;
default: goto unknown;
}
if (field->dpad) {
map_abs(field->dpad);
goto ignore;
}
map_abs(ABS_HAT0X);
break;
}
switch (usage->hid) {
/* These usage IDs map directly to the usage codes. */
case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
if (field->flags & HID_MAIN_ITEM_RELATIVE)
map_rel(usage->hid & 0xf);
else
map_abs(usage->hid & 0xf);
break;
case HID_GD_HATSWITCH:
usage->hat_min = field->logical_minimum;
usage->hat_max = field->logical_maximum;
map_abs(ABS_HAT0X);
break;
case HID_GD_START: map_key_clear(BTN_START); break;
case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
default: goto unknown;
}
break;
case HID_UP_LED:
if (((usage->hid - 1) & 0xffff) >= LED_MAX)
goto ignore;
map_led((usage->hid - 1) & 0xffff);
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);
}
map_abs_clear(ABS_PRESSURE);
break;
case 0x32: /* InRange */
switch (field->physical & 0xff) {
case 0x21: map_key(BTN_TOOL_MOUSE); break;
case 0x22: map_key(BTN_TOOL_FINGER); break;
default: map_key(BTN_TOOL_PEN); break;
}
break;
case 0x3c: /* Invert */
map_key_clear(BTN_TOOL_RUBBER);
break;
case 0x33: /* Touch */
case 0x42: /* TipSwitch */
case 0x43: /* TipSwitch2 */
device->quirks &= ~HID_QUIRK_NOTOUCH;
map_key_clear(BTN_TOUCH);
break;
case 0x44: /* BarrelSwitch */
map_key_clear(BTN_STYLUS);
break;
default: goto unknown;
}
break;
case HID_UP_CONSUMER: /* USB HUT v1.1, pages 56-62 */
switch (usage->hid & HID_USAGE) {
case 0x000: goto ignore;
case 0x034: map_key_clear(KEY_SLEEP); break;
case 0x036: map_key_clear(BTN_MISC); break;
case 0x045: map_key_clear(KEY_RADIO); break;
case 0x08a: map_key_clear(KEY_WWW); break;
case 0x08d: map_key_clear(KEY_PROGRAM); break;
case 0x095: map_key_clear(KEY_HELP); break;
case 0x09c: map_key_clear(KEY_CHANNELUP); break;
case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
case 0x0b0: map_key_clear(KEY_PLAY); break;
case 0x0b1: map_key_clear(KEY_PAUSE); break;
case 0x0b2: map_key_clear(KEY_RECORD); break;
case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
case 0x0b4: map_key_clear(KEY_REWIND); break;
case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
case 0x0b7: map_key_clear(KEY_STOPCD); break;
case 0x0b8: map_key_clear(KEY_EJECTCD); break;
case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
case 0x0e0: map_abs_clear(ABS_VOLUME); break;
case 0x0e2: map_key_clear(KEY_MUTE); break;
case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
case 0x183: map_key_clear(KEY_CONFIG); break;
case 0x18a: map_key_clear(KEY_MAIL); break;
case 0x192: map_key_clear(KEY_CALC); break;
case 0x194: map_key_clear(KEY_FILE); break;
case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
case 0x201: map_key_clear(KEY_NEW); break;
case 0x207: map_key_clear(KEY_SAVE); break;
case 0x208: map_key_clear(KEY_PRINT); break;
case 0x209: map_key_clear(KEY_PROPS); break;
case 0x21a: map_key_clear(KEY_UNDO); break;
case 0x21b: map_key_clear(KEY_COPY); break;
case 0x21c: map_key_clear(KEY_CUT); break;
case 0x21d: map_key_clear(KEY_PASTE); break;
case 0x221: map_key_clear(KEY_FIND); break;
case 0x223: map_key_clear(KEY_HOMEPAGE); break;
case 0x224: map_key_clear(KEY_BACK); break;
case 0x225: map_key_clear(KEY_FORWARD); break;
case 0x226: map_key_clear(KEY_STOP); break;
case 0x227: map_key_clear(KEY_REFRESH); break;
case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
case 0x238: map_rel(REL_HWHEEL); break;
case 0x279: map_key_clear(KEY_REDO); break;
case 0x289: map_key_clear(KEY_REPLY); break;
case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
case 0x28c: map_key_clear(KEY_SEND); break;
default: goto ignore;
}
break;
case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
set_bit(EV_REP, input->evbit);
switch (usage->hid & HID_USAGE) {
case 0x021: map_key_clear(KEY_PRINT); break;
case 0x070: map_key_clear(KEY_HP); break;
case 0x071: map_key_clear(KEY_CAMERA); break;
case 0x072: map_key_clear(KEY_SOUND); break;
case 0x073: map_key_clear(KEY_QUESTION); break;
case 0x080: map_key_clear(KEY_EMAIL); break;
case 0x081: map_key_clear(KEY_CHAT); break;
case 0x082: map_key_clear(KEY_SEARCH); break;
case 0x083: map_key_clear(KEY_CONNECT); break;
case 0x084: map_key_clear(KEY_FINANCE); break;
case 0x085: map_key_clear(KEY_SPORT); break;
case 0x086: map_key_clear(KEY_SHOP); break;
default: goto ignore;
}
break;
case HID_UP_MSVENDOR:
goto ignore;
case HID_UP_CUSTOM: /* Reported on Logitech and Powerbook USB keyboards */
set_bit(EV_REP, input->evbit);
switch(usage->hid & HID_USAGE) {
case 0x003: map_key_clear(KEY_FN); break;
default: goto ignore;
}
break;
case HID_UP_LOGIVENDOR: /* Reported on Logitech Ultra X Media Remote */
set_bit(EV_REP, input->evbit);
switch(usage->hid & HID_USAGE) {
case 0x004: map_key_clear(KEY_AGAIN); break;
case 0x00d: map_key_clear(KEY_HOME); break;
case 0x024: map_key_clear(KEY_SHUFFLE); break;
case 0x025: map_key_clear(KEY_TV); break;
case 0x026: map_key_clear(KEY_MENU); break;
case 0x031: map_key_clear(KEY_AUDIO); break;
case 0x032: map_key_clear(KEY_SUBTITLE); break;
case 0x033: map_key_clear(KEY_LAST); break;
case 0x047: map_key_clear(KEY_MP3); break;
case 0x048: map_key_clear(KEY_DVD); break;
case 0x049: map_key_clear(KEY_MEDIA); break;
case 0x04a: map_key_clear(KEY_VIDEO); break;
case 0x04b: map_key_clear(KEY_ANGLE); break;
case 0x04c: map_key_clear(KEY_LANGUAGE); break;
case 0x04d: map_key_clear(KEY_SUBTITLE); break;
case 0x051: map_key_clear(KEY_RED); break;
case 0x052: map_key_clear(KEY_CLOSE); break;
default: goto ignore;
}
break;
case HID_UP_PID:
set_bit(EV_FF, input->evbit);
switch(usage->hid & HID_USAGE) {
case 0x26: map_ff_effect(FF_CONSTANT); goto ignore;
case 0x27: map_ff_effect(FF_RAMP); goto ignore;
case 0x28: map_ff_effect(FF_CUSTOM); goto ignore;
case 0x30: map_ff_effect(FF_SQUARE); map_ff_effect(FF_PERIODIC); goto ignore;
case 0x31: map_ff_effect(FF_SINE); map_ff_effect(FF_PERIODIC); goto ignore;
case 0x32: map_ff_effect(FF_TRIANGLE); map_ff_effect(FF_PERIODIC); goto ignore;
case 0x33: map_ff_effect(FF_SAW_UP); map_ff_effect(FF_PERIODIC); goto ignore;
case 0x34: map_ff_effect(FF_SAW_DOWN); map_ff_effect(FF_PERIODIC); goto ignore;
case 0x40: map_ff_effect(FF_SPRING); goto ignore;
case 0x41: map_ff_effect(FF_DAMPER); goto ignore;
case 0x42: map_ff_effect(FF_INERTIA); goto ignore;
case 0x43: map_ff_effect(FF_FRICTION); goto ignore;
case 0x7e: map_ff(FF_GAIN); break;
case 0x83: input->ff_effects_max = field->value[0]; goto ignore;
case 0x98: map_ff(FF_AUTOCENTER); break;
case 0xa4: map_key_clear(BTN_DEAD); break;
default: goto ignore;
}
break;
default:
unknown:
if (field->report_size == 1) {
if (field->report->type == HID_OUTPUT_REPORT) {
map_led(LED_MISC);
break;
}
map_key(BTN_MISC);
break;
}
if (field->flags & HID_MAIN_ITEM_RELATIVE) {
map_rel(REL_MISC);
break;
}
map_abs(ABS_MISC);
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)
goto ignore;
if (((device->quirks & (HID_QUIRK_2WHEEL_POWERMOUSE)) && (usage->hid == 0x00010032)))
map_rel(REL_HWHEEL);
if ((device->quirks & (HID_QUIRK_2WHEEL_MOUSE_HACK_7 | HID_QUIRK_2WHEEL_MOUSE_HACK_5)) &&
(usage->type == EV_REL) && (usage->code == REL_WHEEL))
set_bit(REL_HWHEEL, bit);
if (((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
|| ((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007)))
goto ignore;
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;
}
if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
else input_set_abs_params(input, usage->code, a, b, 0, 0);
}
if (usage->hat_min < usage->hat_max || usage->hat_dir) {
int i;
for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
input_set_abs_params(input, i, -1, 1, 0, 0);
set_bit(i, input->absbit);
}
if (usage->hat_dir && !field->dpad)
field->dpad = usage->code;
}
#ifdef DEBUG
resolv_event(usage->type, usage->code);
printk("\n");
#endif
return;
ignore:
#ifdef DEBUG
printk("IGNORED\n");
#endif
return;
}
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;
int *quirks = &hid->quirks;
if (!field->hidinput)
return;
input = field->hidinput->input;
input_regs(input, regs);
if (!usage->type)
return;
if (((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
|| ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007))) {
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 || usage->hat_dir) {
int hat_dir = usage->hat_dir;
if (!hat_dir)
hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].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_UNKNOWN */
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 hid_input *hidinput;
list_for_each_entry(hidinput, &hid->inputs, list)
input_sync(hidinput->input);
}
static int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
{
struct hid_report *report;
int i, j;
list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
for (i = 0; i < report->maxfield; i++) {
*field = report->field[i];
for (j = 0; j < (*field)->maxusage; j++)
if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
return j;
}
}
return -1;
}
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;
int offset;
if (type == EV_FF)
return hid_ff_event(hid, dev, type, code, value);
if (type != EV_LED)
return -1;
if ((offset = hidinput_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 *report;
struct hid_input *hidinput = NULL;
struct input_dev *input_dev;
int i, j, k;
INIT_LIST_HEAD(&hid->inputs);
for (i = 0; i < hid->maxcollection; i++)
if (hid->collection[i].type == HID_COLLECTION_APPLICATION ||
hid->collection[i].type == HID_COLLECTION_PHYSICAL)
if (IS_INPUT_APPLICATION(hid->collection[i].usage))
break;
if (i == hid->maxcollection)
return -1;
for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++)
list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
if (!report->maxfield)
continue;
if (!hidinput) {
hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
input_dev = input_allocate_device();
if (!hidinput || !input_dev) {
kfree(hidinput);
input_free_device(input_dev);
err("Out of memory during hid input probe");
return -1;
}
input_dev->private = hid;
input_dev->event = hidinput_input_event;
input_dev->open = hidinput_open;
input_dev->close = hidinput_close;
input_dev->name = hid->name;
input_dev->phys = hid->phys;
input_dev->uniq = hid->uniq;
usb_to_input_id(dev, &input_dev->id);
input_dev->cdev.dev = &hid->intf->dev;
hidinput->input = input_dev;
list_add_tail(&hidinput->list, &hid->inputs);
}
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;
}
}
/* 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 hid_input *hidinput, *next;
list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
list_del(&hidinput->list);
input_unregister_device(hidinput->input);
kfree(hidinput);
}
}
Reference in New Issue View Git Blame Copy Permalink