* Copyright (c) 2000-2001 Vojtech Pavlik
* Copyright (c) 2006-2010 Jiri Kosina
*
* HID to Linux Input mapping
*/
*
* 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/hid.h>
#include <linux/hid-debug.h>
#include "hid-ids.h"
#define unk KEY_UNKNOWN
#define HID_FIELD_UNIT_CENTIMETERS 0x11
#define HID_FIELD_UNIT_INCHES 0x13
#define HID_FIELD_UNIT_INCHES_MUL 254
#define HID_FIELD_UNIT_DEGREES 0x14
#define HID_FIELD_UNIT_DEGREES_MUL 573
#define HID_FIELD_UNIT_RADIANS 0x12
#define HID_LOGICAL_EXT_MUL 10
#define HID_PHYSICAL_EXT_MUL 10
#define HID_BATTERY_CAP_MUL 100
#define HID_KMALLOC_DEFAULT_SIZE 4
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, 111, 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, 179, 180, 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, 111, 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) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
#define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
#define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
#define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
#define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, &max, EV_ABS, (c))
#define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, &max, EV_KEY, (c))
static bool match_scancode(struct hid_usage *usage, unsigned int cur_idx, unsigned int scancode)
{
return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
}
static bool match_keycode(struct hid_usage *usage, unsigned int cur_idx, unsigned int keycode)
{
* We should exclude unmapped usages when doing lookup by keycode.
*/
return (usage->type == EV_KEY && usage->code == keycode);
}
static bool match_index(struct hid_usage *usage, unsigned int cur_idx, unsigned int idx)
{
return cur_idx == idx;
}
typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, unsigned int cur_idx, unsigned int val);
static struct hid_usage *hidinput_find_key(struct hid_device *hid, hid_usage_cmp_t match, unsigned int value,
unsigned int *usage_idx)
{
unsigned int i, j, k, cur_idx = 0;
struct hid_report *report;
struct hid_usage *usage;
for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
list_for_each_entry(report, &hid->report_enum[k].report_list, list)
{
for (i = 0; i < report->maxfield; i++) {
for (j = 0; j < report->field[i]->maxusage; j++) {
usage = report->field[i]->usage + j;
if (usage->type == EV_KEY || usage->type == 0) {
if (match(usage, cur_idx, value)) {
if (usage_idx) {
*usage_idx = cur_idx;
}
return usage;
}
cur_idx++;
}
}
}
}
}
return NULL;
}
static struct hid_usage *hidinput_locate_usage(struct hid_device *hid, const struct input_keymap_entry *ke,
unsigned int *index)
{
struct hid_usage *usage;
unsigned int scancode;
if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
usage = hidinput_find_key(hid, match_index, ke->index, index);
} else if (input_scancode_to_scalar(ke, &scancode) == 0) {
usage = hidinput_find_key(hid, match_scancode, scancode, index);
} else {
usage = NULL;
}
return usage;
}
static int hidinput_getkeycode(struct input_dev *dev, struct input_keymap_entry *ke)
{
struct hid_device *hid = input_get_drvdata(dev);
struct hid_usage *usage;
unsigned int scancode, index;
usage = hidinput_locate_usage(hid, ke, &index);
if (usage) {
ke->keycode = usage->type == EV_KEY ? usage->code : KEY_RESERVED;
ke->index = index;
scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
ke->len = sizeof(scancode);
memcpy(ke->scancode, &scancode, sizeof(scancode));
return 0;
}
return -EINVAL;
}
static int hidinput_setkeycode(struct input_dev *dev, const struct input_keymap_entry *ke, unsigned int *old_keycode)
{
struct hid_device *hid = input_get_drvdata(dev);
struct hid_usage *usage;
usage = hidinput_locate_usage(hid, ke, NULL);
if (usage) {
*old_keycode = usage->type == EV_KEY ? usage->code : KEY_RESERVED;
usage->code = ke->keycode;
clear_bit(*old_keycode, dev->keybit);
set_bit(usage->code, dev->keybit);
dbg_hid("Assigned keycode %d to HID usage code %x\n", usage->code, usage->hid);
* Set the keybit for the old keycode if the old keycode is used
* by another key
*/
if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL)) {
set_bit(*old_keycode, dev->keybit);
}
return 0;
}
return -EINVAL;
}
* hidinput_calc_abs_res - calculate an absolute axis resolution
* @field: the HID report field to calculate resolution for
* @code: axis code
*
* The formula is:
* (logical_maximum - logical_minimum)
* resolution = ----------------------------------------------------------
* (physical_maximum - physical_minimum) * 10 ^ unit_exponent
*
* as seen in the HID specification v1.11 6.2.2.7 Global Items.
*
* Only exponent 1 length units are processed. Centimeters and inches are
* converted to millimeters. Degrees are converted to radians.
*/
__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
{
__s32 unit_exponent = field->unit_exponent;
__s32 logical_extents = field->logical_maximum - field->logical_minimum;
__s32 physical_extents = field->physical_maximum - field->physical_minimum;
__s32 prev;
if (logical_extents <= 0 || physical_extents <= 0) {
return 0;
}
* Verify and convert units.
* See HID specification v1.11 6.2.2.7 Global Items for unit decoding
*/
switch (code) {
case ABS_X:
case ABS_Y:
case ABS_Z:
case ABS_MT_POSITION_X:
case ABS_MT_POSITION_Y:
case ABS_MT_TOOL_X:
case ABS_MT_TOOL_Y:
case ABS_MT_TOUCH_MAJOR:
case ABS_MT_TOUCH_MINOR:
if (field->unit == HID_FIELD_UNIT_CENTIMETERS) {
unit_exponent += 1;
} else if (field->unit == HID_FIELD_UNIT_INCHES) {
prev = physical_extents;
physical_extents *= HID_FIELD_UNIT_INCHES_MUL;
if (physical_extents < prev) {
return 0;
}
unit_exponent -= 1;
} else {
return 0;
}
break;
case ABS_RX:
case ABS_RY:
case ABS_RZ:
case ABS_WHEEL:
case ABS_TILT_X:
case ABS_TILT_Y:
if (field->unit == HID_FIELD_UNIT_DEGREES) {
prev = logical_extents;
logical_extents *= HID_FIELD_UNIT_DEGREES_MUL;
if (logical_extents < prev) {
return 0;
}
unit_exponent += 1;
} else if (field->unit != HID_FIELD_UNIT_RADIANS) {
return 0;
}
break;
default:
return 0;
}
for (; unit_exponent < 0; unit_exponent++) {
prev = logical_extents;
logical_extents *= HID_LOGICAL_EXT_MUL;
if (logical_extents < prev) {
return 0;
}
}
for (; unit_exponent > 0; unit_exponent--) {
prev = physical_extents;
physical_extents *= HID_PHYSICAL_EXT_MUL;
if (physical_extents < prev) {
return 0;
}
}
return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
}
EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
#ifdef CONFIG_HID_BATTERY_STRENGTH
static enum power_supply_property hidinput_battery_props[] = {
POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_SCOPE,
};
#define HID_BATTERY_QUIRK_PERCENT (1 << 0)
#define HID_BATTERY_QUIRK_FEATURE (1 << 1)
#define HID_BATTERY_QUIRK_IGNORE (1 << 2)
static const struct hid_device_id hid_battery_quirks[] = {
{HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE},
{HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE},
{HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE},
{HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE},
{HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE},
{HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084), HID_BATTERY_QUIRK_IGNORE},
{HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_3), HID_BATTERY_QUIRK_IGNORE},
{HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), HID_BATTERY_QUIRK_IGNORE},
{HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD), HID_BATTERY_QUIRK_IGNORE},
{HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN), HID_BATTERY_QUIRK_IGNORE},
{}};
static unsigned find_battery_quirk(struct hid_device *hdev)
{
unsigned quirks = 0;
const struct hid_device_id *match;
match = hid_match_id(hdev, hid_battery_quirks);
if (match != NULL) {
quirks = match->driver_data;
}
return quirks;
}
static int hidinput_scale_battery_capacity(struct hid_device *dev, int value)
{
if (dev->battery_min < dev->battery_max && value >= dev->battery_min && value <= dev->battery_max) {
value = ((value - dev->battery_min) * HID_BATTERY_CAP_MUL) / (dev->battery_max - dev->battery_min);
}
return value;
}
static int hidinput_query_battery_capacity(struct hid_device *dev)
{
u8 *buf;
int ret;
buf = kmalloc(HID_KMALLOC_DEFAULT_SIZE, GFP_KERNEL);
if (!buf) {
return -ENOMEM;
}
ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, HID_KMALLOC_DEFAULT_SIZE, dev->battery_report_type,
HID_REQ_GET_REPORT);
if (ret < ENOENT) {
kfree(buf);
return -ENODATA;
}
ret = hidinput_scale_battery_capacity(dev, buf[1]);
kfree(buf);
return ret;
}
static int hidinput_get_battery_property(struct power_supply *psy, enum power_supply_property prop,
union power_supply_propval *val)
{
struct hid_device *dev = power_supply_get_drvdata(psy);
int value;
int ret = 0;
switch (prop) {
case POWER_SUPPLY_PROP_PRESENT:
case POWER_SUPPLY_PROP_ONLINE:
val->intval = 1;
break;
case POWER_SUPPLY_PROP_CAPACITY:
if (dev->battery_status != HID_BATTERY_REPORTED && !dev->battery_avoid_query) {
value = hidinput_query_battery_capacity(dev);
if (value < 0) {
return value;
}
} else {
value = dev->battery_capacity;
}
val->intval = value;
break;
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = dev->name;
break;
case POWER_SUPPLY_PROP_STATUS:
if (dev->battery_status != HID_BATTERY_REPORTED && !dev->battery_avoid_query) {
value = hidinput_query_battery_capacity(dev);
if (value < 0) {
return value;
}
dev->battery_capacity = value;
dev->battery_status = HID_BATTERY_QUERIED;
}
if (dev->battery_status == HID_BATTERY_UNKNOWN) {
val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
} else {
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
}
break;
case POWER_SUPPLY_PROP_SCOPE:
val->intval = POWER_SUPPLY_SCOPE_DEVICE;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
{
struct power_supply_desc *psy_desc;
struct power_supply_config psy_cfg = {
.drv_data = dev,
};
unsigned quirks;
s32 min, max;
int error;
if (dev->battery) {
return 0;
}
quirks = find_battery_quirk(dev);
hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", dev->bus, dev->vendor, dev->product, dev->version, quirks);
if (quirks & HID_BATTERY_QUIRK_IGNORE) {
return 0;
}
psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
if (!psy_desc) {
return -ENOMEM;
}
psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", strlen(dev->uniq) ? dev->uniq : dev_name(&dev->dev));
if (!psy_desc->name) {
error = -ENOMEM;
goto err_free_mem;
}
psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
psy_desc->properties = hidinput_battery_props;
psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
psy_desc->use_for_apm = 0;
psy_desc->get_property = hidinput_get_battery_property;
min = field->logical_minimum;
max = field->logical_maximum;
if (quirks & HID_BATTERY_QUIRK_PERCENT) {
min = 0;
max = 0x64;
}
if (quirks & HID_BATTERY_QUIRK_FEATURE) {
report_type = HID_FEATURE_REPORT;
}
dev->battery_min = min;
dev->battery_max = max;
dev->battery_report_type = report_type;
dev->battery_report_id = field->report->id;
* Stylus is normally not connected to the device and thus we
* can't query the device and get meaningful battery strength.
* We have to wait for the device to report it on its own.
*/
dev->battery_avoid_query = report_type == HID_INPUT_REPORT && field->physical == HID_DG_STYLUS;
dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
if (IS_ERR(dev->battery)) {
error = PTR_ERR(dev->battery);
hid_warn(dev, "can't register power supply: %d\n", error);
goto err_free_name;
}
power_supply_powers(dev->battery, &dev->dev);
return 0;
err_free_name:
kfree(psy_desc->name);
err_free_mem:
kfree(psy_desc);
dev->battery = NULL;
return error;
}
static void hidinput_cleanup_battery(struct hid_device *dev)
{
const struct power_supply_desc *psy_desc;
if (!dev->battery) {
return;
}
psy_desc = dev->battery->desc;
power_supply_unregister(dev->battery);
kfree(psy_desc->name);
kfree(psy_desc);
dev->battery = NULL;
}
static void hidinput_update_battery(struct hid_device *dev, int value)
{
int capacity;
if (!dev->battery) {
return;
}
if (value == 0 || value < dev->battery_min || value > dev->battery_max) {
return;
}
capacity = hidinput_scale_battery_capacity(dev, value);
if (dev->battery_status != HID_BATTERY_REPORTED || capacity != dev->battery_capacity) {
dev->battery_capacity = capacity;
dev->battery_status = HID_BATTERY_REPORTED;
power_supply_changed(dev->battery);
}
}
#else
static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
{
return 0;
}
static void hidinput_cleanup_battery(struct hid_device *dev)
{
}
static void hidinput_update_battery(struct hid_device *dev, int value)
{
}
#endif
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_get_drvdata(input);
int max = 0, code;
unsigned long *bit = NULL;
field->hidinput = hidinput;
if (field->flags & HID_MAIN_ITEM_CONSTANT) {
goto ignore;
}
if (field->report_count < 1) {
goto ignore;
}
if (field->report_type == HID_OUTPUT_REPORT && (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
goto ignore;
}
if (device->driver->input_mapping) {
int ret = device->driver->input_mapping(device, hidinput, field, usage, &bit, &max);
if (ret > 0) {
goto mapped;
}
if (ret < 0) {
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) < 0x100) {
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) & HID_USAGE);
switch (field->application) {
case HID_GD_MOUSE:
case HID_GD_POINTER:
code += BTN_MOUSE;
break;
case HID_GD_JOYSTICK:
if (code <= 0xf) {
code += BTN_JOYSTICK;
} else {
code += BTN_TRIGGER_HAPPY - 0x10;
}
break;
case HID_GD_GAMEPAD:
if (code <= 0xf) {
code += BTN_GAMEPAD;
} else {
code += BTN_TRIGGER_HAPPY - 0x10;
}
break;
default:
switch (field->physical) {
case HID_GD_MOUSE:
case HID_GD_POINTER:
code += BTN_MOUSE;
break;
case HID_GD_JOYSTICK:
code += BTN_JOYSTICK;
break;
case HID_GD_GAMEPAD:
code += BTN_GAMEPAD;
break;
default:
code += BTN_MISC;
}
}
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;
case 0xc4:
map_abs(ABS_GAS);
break;
case 0xc5:
map_abs(ABS_BRAKE);
break;
case 0xc8:
map_abs(ABS_WHEEL);
break;
default:
goto ignore;
}
break;
case HID_UP_GENDESK:
if ((usage->hid & 0xf0) == 0x80) {
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;
case 0x4:
map_key_clear(KEY_CONTEXT_MENU);
break;
case 0x5:
map_key_clear(KEY_MENU);
break;
case 0x6:
map_key_clear(KEY_PROG1);
break;
case 0x7:
map_key_clear(KEY_HELP);
break;
case 0x8:
map_key_clear(KEY_EXIT);
break;
case 0x9:
map_key_clear(KEY_SELECT);
break;
case 0xa:
map_key_clear(KEY_RIGHT);
break;
case 0xb:
map_key_clear(KEY_LEFT);
break;
case 0xc:
map_key_clear(KEY_UP);
break;
case 0xd:
map_key_clear(KEY_DOWN);
break;
case 0xe:
map_key_clear(KEY_POWER2);
break;
case 0xf:
map_key_clear(KEY_RESTART);
break;
default:
goto unknown;
}
break;
}
if ((usage->hid & 0xf0) == 0xb0) {
switch (usage->hid & 0xf) {
case 0x05:
map_key_clear(KEY_SWITCHVIDEOMODE);
break;
default:
goto ignore;
}
break;
}
* Some lazy vendors declare 255 usages for System Control,
* leading to the creation of ABS_X|Y axis and too many others.
* It wouldn't be a problem if joydev doesn't consider the
* device as a joystick then.
*/
if (field->application == HID_GD_SYSTEM_CONTROL) {
goto ignore;
}
if ((usage->hid & 0xf0) == 0x90) {
switch (usage->hid) {
case HID_GD_UP:
usage->hat_dir = 1;
break;
case HID_GD_DOWN:
usage->hat_dir = 0x5;
break;
case HID_GD_RIGHT:
usage->hat_dir = 0x3;
break;
case HID_GD_LEFT:
usage->hat_dir = 0x7;
break;
default:
goto unknown;
}
if (field->dpad) {
map_abs(field->dpad);
goto ignore;
}
map_abs(ABS_HAT0X);
break;
}
switch (usage->hid) {
case HID_GD_X:
case HID_GD_Y:
case HID_GD_Z:
case HID_GD_RX:
case HID_GD_RY:
case HID_GD_RZ:
if (field->flags & HID_MAIN_ITEM_RELATIVE) {
map_rel(usage->hid & 0xf);
} else {
map_abs_clear(usage->hid & 0xf);
}
break;
case HID_GD_WHEEL:
if (field->flags & HID_MAIN_ITEM_RELATIVE) {
set_bit(REL_WHEEL, input->relbit);
map_rel(REL_WHEEL_HI_RES);
} else {
map_abs(usage->hid & 0xf);
}
break;
case HID_GD_SLIDER:
case HID_GD_DIAL:
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;
case HID_GD_RFKILL_BTN:
if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
map_key_clear(KEY_RFKILL);
field->flags |= HID_MAIN_ITEM_RELATIVE;
break;
}
default:
goto unknown;
}
break;
case HID_UP_LED:
switch (usage->hid & 0xffff) {
case 0x01:
map_led(LED_NUML);
break;
case 0x02:
map_led(LED_CAPSL);
break;
case 0x03:
map_led(LED_SCROLLL);
break;
case 0x04:
map_led(LED_COMPOSE);
break;
case 0x05:
map_led(LED_KANA);
break;
case 0x27:
map_led(LED_SLEEP);
break;
case 0x4c:
map_led(LED_SUSPEND);
break;
case 0x09:
map_led(LED_MUTE);
break;
case 0x4b:
map_led(LED_MISC);
break;
case 0x19:
map_led(LED_MAIL);
break;
case 0x4d:
map_led(LED_CHARGING);
break;
default:
goto ignore;
}
break;
case HID_UP_DIGITIZER:
if ((field->application & 0xff) == 0x01) {
__set_bit(INPUT_PROP_POINTER, input->propbit);
} else if ((field->application & 0xff) == 0x02) {
__set_bit(INPUT_PROP_DIRECT, input->propbit);
}
switch (usage->hid & 0xff) {
case 0x00:
goto ignore;
case 0x30:
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:
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 0x3b:
hidinput_setup_battery(device, HID_INPUT_REPORT, field);
usage->type = EV_PWR;
return;
case 0x3c:
map_key_clear(BTN_TOOL_RUBBER);
break;
case 0x3d:
map_abs_clear(ABS_TILT_X);
break;
case 0x3e:
map_abs_clear(ABS_TILT_Y);
break;
case 0x33:
case 0x42:
case 0x43:
device->quirks &= ~HID_QUIRK_NOTOUCH;
map_key_clear(BTN_TOUCH);
break;
case 0x44:
map_key_clear(BTN_STYLUS);
break;
case 0x45:
* This event is reported when eraser tip touches the surface.
* Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
* tool gets in proximity.
*/
map_key_clear(BTN_TOUCH);
break;
case 0x46:
case 0x5a:
map_key_clear(BTN_STYLUS2);
break;
case 0x5b:
usage->type = EV_MSC;
usage->code = MSC_SERIAL;
bit = input->mscbit;
max = MSC_MAX;
break;
default:
goto unknown;
}
break;
case HID_UP_TELEPHONY:
switch (usage->hid & HID_USAGE) {
case 0x2f:
map_key_clear(KEY_MICMUTE);
break;
case 0xb0:
map_key_clear(KEY_NUMERIC_0);
break;
case 0xb1:
map_key_clear(KEY_NUMERIC_1);
break;
case 0xb2:
map_key_clear(KEY_NUMERIC_2);
break;
case 0xb3:
map_key_clear(KEY_NUMERIC_3);
break;
case 0xb4:
map_key_clear(KEY_NUMERIC_4);
break;
case 0xb5:
map_key_clear(KEY_NUMERIC_5);
break;
case 0xb6:
map_key_clear(KEY_NUMERIC_6);
break;
case 0xb7:
map_key_clear(KEY_NUMERIC_7);
break;
case 0xb8:
map_key_clear(KEY_NUMERIC_8);
break;
case 0xb9:
map_key_clear(KEY_NUMERIC_9);
break;
case 0xba:
map_key_clear(KEY_NUMERIC_STAR);
break;
case 0xbb:
map_key_clear(KEY_NUMERIC_POUND);
break;
case 0xbc:
map_key_clear(KEY_NUMERIC_A);
break;
case 0xbd:
map_key_clear(KEY_NUMERIC_B);
break;
case 0xbe:
map_key_clear(KEY_NUMERIC_C);
break;
case 0xbf:
map_key_clear(KEY_NUMERIC_D);
break;
default:
goto ignore;
}
break;
case HID_UP_CONSUMER:
switch (usage->hid & HID_USAGE) {
case 0x000:
goto ignore;
case 0x030:
map_key_clear(KEY_POWER);
break;
case 0x031:
map_key_clear(KEY_RESTART);
break;
case 0x032:
map_key_clear(KEY_SLEEP);
break;
case 0x034:
map_key_clear(KEY_SLEEP);
break;
case 0x035:
map_key_clear(KEY_KBDILLUMTOGGLE);
break;
case 0x036:
map_key_clear(BTN_MISC);
break;
case 0x040:
map_key_clear(KEY_MENU);
break;
case 0x041:
map_key_clear(KEY_SELECT);
break;
case 0x042:
map_key_clear(KEY_UP);
break;
case 0x043:
map_key_clear(KEY_DOWN);
break;
case 0x044:
map_key_clear(KEY_LEFT);
break;
case 0x045:
map_key_clear(KEY_RIGHT);
break;
case 0x046:
map_key_clear(KEY_ESC);
break;
case 0x047:
map_key_clear(KEY_KPPLUS);
break;
case 0x048:
map_key_clear(KEY_KPMINUS);
break;
case 0x060:
map_key_clear(KEY_INFO);
break;
case 0x061:
map_key_clear(KEY_SUBTITLE);
break;
case 0x063:
map_key_clear(KEY_VCR);
break;
case 0x065:
map_key_clear(KEY_CAMERA);
break;
case 0x069:
map_key_clear(KEY_RED);
break;
case 0x06a:
map_key_clear(KEY_GREEN);
break;
case 0x06b:
map_key_clear(KEY_BLUE);
break;
case 0x06c:
map_key_clear(KEY_YELLOW);
break;
case 0x06d:
map_key_clear(KEY_ASPECT_RATIO);
break;
case 0x06f:
map_key_clear(KEY_BRIGHTNESSUP);
break;
case 0x070:
map_key_clear(KEY_BRIGHTNESSDOWN);
break;
case 0x072:
map_key_clear(KEY_BRIGHTNESS_TOGGLE);
break;
case 0x073:
map_key_clear(KEY_BRIGHTNESS_MIN);
break;
case 0x074:
map_key_clear(KEY_BRIGHTNESS_MAX);
break;
case 0x075:
map_key_clear(KEY_BRIGHTNESS_AUTO);
break;
case 0x079:
map_key_clear(KEY_KBDILLUMUP);
break;
case 0x07a:
map_key_clear(KEY_KBDILLUMDOWN);
break;
case 0x07c:
map_key_clear(KEY_KBDILLUMTOGGLE);
break;
case 0x082:
map_key_clear(KEY_VIDEO_NEXT);
break;
case 0x083:
map_key_clear(KEY_LAST);
break;
case 0x084:
map_key_clear(KEY_ENTER);
break;
case 0x088:
map_key_clear(KEY_PC);
break;
case 0x089:
map_key_clear(KEY_TV);
break;
case 0x08a:
map_key_clear(KEY_WWW);
break;
case 0x08b:
map_key_clear(KEY_DVD);
break;
case 0x08c:
map_key_clear(KEY_PHONE);
break;
case 0x08d:
map_key_clear(KEY_PROGRAM);
break;
case 0x08e:
map_key_clear(KEY_VIDEOPHONE);
break;
case 0x08f:
map_key_clear(KEY_GAMES);
break;
case 0x090:
map_key_clear(KEY_MEMO);
break;
case 0x091:
map_key_clear(KEY_CD);
break;
case 0x092:
map_key_clear(KEY_VCR);
break;
case 0x093:
map_key_clear(KEY_TUNER);
break;
case 0x094:
map_key_clear(KEY_EXIT);
break;
case 0x095:
map_key_clear(KEY_HELP);
break;
case 0x096:
map_key_clear(KEY_TAPE);
break;
case 0x097:
map_key_clear(KEY_TV2);
break;
case 0x098:
map_key_clear(KEY_SAT);
break;
case 0x09a:
map_key_clear(KEY_PVR);
break;
case 0x09c:
map_key_clear(KEY_CHANNELUP);
break;
case 0x09d:
map_key_clear(KEY_CHANNELDOWN);
break;
case 0x0a0:
map_key_clear(KEY_VCR2);
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 0x0bc:
map_key_clear(KEY_MEDIA_REPEAT);
break;
case 0x0b9:
map_key_clear(KEY_SHUFFLE);
break;
case 0x0bf:
map_key_clear(KEY_SLOW);
break;
case 0x0cd:
map_key_clear(KEY_PLAYPAUSE);
break;
case 0x0cf:
map_key_clear(KEY_VOICECOMMAND);
break;
case 0x0d8:
map_key_clear(KEY_DICTATE);
break;
case 0x0d9:
map_key_clear(KEY_EMOJI_PICKER);
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 0x0f5:
map_key_clear(KEY_SLOW);
break;
case 0x181:
map_key_clear(KEY_BUTTONCONFIG);
break;
case 0x182:
map_key_clear(KEY_BOOKMARKS);
break;
case 0x183:
map_key_clear(KEY_CONFIG);
break;
case 0x184:
map_key_clear(KEY_WORDPROCESSOR);
break;
case 0x185:
map_key_clear(KEY_EDITOR);
break;
case 0x186:
map_key_clear(KEY_SPREADSHEET);
break;
case 0x187:
map_key_clear(KEY_GRAPHICSEDITOR);
break;
case 0x188:
map_key_clear(KEY_PRESENTATION);
break;
case 0x189:
map_key_clear(KEY_DATABASE);
break;
case 0x18a:
map_key_clear(KEY_MAIL);
break;
case 0x18b:
map_key_clear(KEY_NEWS);
break;
case 0x18c:
map_key_clear(KEY_VOICEMAIL);
break;
case 0x18d:
map_key_clear(KEY_ADDRESSBOOK);
break;
case 0x18e:
map_key_clear(KEY_CALENDAR);
break;
case 0x18f:
map_key_clear(KEY_TASKMANAGER);
break;
case 0x190:
map_key_clear(KEY_JOURNAL);
break;
case 0x191:
map_key_clear(KEY_FINANCE);
break;
case 0x192:
map_key_clear(KEY_CALC);
break;
case 0x193:
map_key_clear(KEY_PLAYER);
break;
case 0x194:
map_key_clear(KEY_FILE);
break;
case 0x196:
map_key_clear(KEY_WWW);
break;
case 0x199:
map_key_clear(KEY_CHAT);
break;
case 0x19c:
map_key_clear(KEY_LOGOFF);
break;
case 0x19e:
map_key_clear(KEY_COFFEE);
break;
case 0x19f:
map_key_clear(KEY_CONTROLPANEL);
break;
case 0x1a2:
map_key_clear(KEY_APPSELECT);
break;
case 0x1a3:
map_key_clear(KEY_NEXT);
break;
case 0x1a4:
map_key_clear(KEY_PREVIOUS);
break;
case 0x1a6:
map_key_clear(KEY_HELP);
break;
case 0x1a7:
map_key_clear(KEY_DOCUMENTS);
break;
case 0x1ab:
map_key_clear(KEY_SPELLCHECK);
break;
case 0x1ae:
map_key_clear(KEY_KEYBOARD);
break;
case 0x1b1:
map_key_clear(KEY_SCREENSAVER);
break;
case 0x1b4:
map_key_clear(KEY_FILE);
break;
case 0x1b6:
map_key_clear(KEY_IMAGES);
break;
case 0x1b7:
map_key_clear(KEY_AUDIO);
break;
case 0x1b8:
map_key_clear(KEY_VIDEO);
break;
case 0x1bc:
map_key_clear(KEY_MESSENGER);
break;
case 0x1bd:
map_key_clear(KEY_INFO);
break;
case 0x1cb:
map_key_clear(KEY_ASSISTANT);
break;
case 0x201:
map_key_clear(KEY_NEW);
break;
case 0x202:
map_key_clear(KEY_OPEN);
break;
case 0x203:
map_key_clear(KEY_CLOSE);
break;
case 0x204:
map_key_clear(KEY_EXIT);
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 0x21f:
map_key_clear(KEY_FIND);
break;
case 0x221:
map_key_clear(KEY_SEARCH);
break;
case 0x222:
map_key_clear(KEY_GOTO);
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 0x22d:
map_key_clear(KEY_ZOOMIN);
break;
case 0x22e:
map_key_clear(KEY_ZOOMOUT);
break;
case 0x22f:
map_key_clear(KEY_ZOOMRESET);
break;
case 0x232:
map_key_clear(KEY_FULL_SCREEN);
break;
case 0x233:
map_key_clear(KEY_SCROLLUP);
break;
case 0x234:
map_key_clear(KEY_SCROLLDOWN);
break;
case 0x238:
set_bit(REL_HWHEEL, input->relbit);
map_rel(REL_HWHEEL_HI_RES);
break;
case 0x23d:
map_key_clear(KEY_EDIT);
break;
case 0x25f:
map_key_clear(KEY_CANCEL);
break;
case 0x269:
map_key_clear(KEY_INSERT);
break;
case 0x26a:
map_key_clear(KEY_DELETE);
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;
case 0x29d:
map_key_clear(KEY_KBD_LAYOUT_NEXT);
break;
case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS);
break;
case 0x2c7:
map_key_clear(KEY_KBDINPUTASSIST_PREV);
break;
case 0x2c8:
map_key_clear(KEY_KBDINPUTASSIST_NEXT);
break;
case 0x2c9:
map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP);
break;
case 0x2ca:
map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP);
break;
case 0x2cb:
map_key_clear(KEY_KBDINPUTASSIST_ACCEPT);
break;
case 0x2cc:
map_key_clear(KEY_KBDINPUTASSIST_CANCEL);
break;
case 0x29f:
map_key_clear(KEY_SCALE);
break;
default:
map_key_clear(KEY_UNKNOWN);
}
break;
case HID_UP_GENDEVCTRLS:
switch (usage->hid) {
case HID_DC_BATTERYSTRENGTH:
hidinput_setup_battery(device, HID_INPUT_REPORT, field);
usage->type = EV_PWR;
return;
default:
break;
}
goto unknown;
case HID_UP_HPVENDOR:
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_HPVENDOR2:
set_bit(EV_REP, input->evbit);
switch (usage->hid & HID_USAGE) {
case 0x001:
map_key_clear(KEY_MICMUTE);
break;
case 0x003:
map_key_clear(KEY_BRIGHTNESSDOWN);
break;
case 0x004:
map_key_clear(KEY_BRIGHTNESSUP);
break;
default:
goto ignore;
}
break;
case HID_UP_MSVENDOR:
goto ignore;
case HID_UP_CUSTOM:
set_bit(EV_REP, input->evbit);
goto ignore;
case HID_UP_LOGIVENDOR:
case HID_UP_LOGIVENDOR2:
case HID_UP_LOGIVENDOR3:
goto ignore;
case HID_UP_PID:
switch (usage->hid & HID_USAGE) {
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;
}
mapped:
if (!bit) {
return;
}
if (device->driver->input_mapped && device->driver->input_mapped(device, hidinput, field, usage, &bit, &max) < 0) {
* The driver indicated that no further generic handling
* of the usage is desired.
*/
return;
}
set_bit(usage->type, input->evbit);
* This part is *really* controversial:
* - HID aims at being generic so we should do our best to export
* all incoming events
* - HID describes what events are, so there is no reason for ABS_X
* to be mapped to ABS_Y
* - HID is using *_MISC+N as a default value, but nothing prevents
* *_MISC+N to overwrite a legitimate even, which confuses userspace
* (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
* processing)
*
* If devices still want to use this (at their own risk), they will
* have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
* the default should be a reliable mapping.
*/
while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
usage->code = find_next_zero_bit(bit, max + 1, usage->code);
} else {
device->status |= HID_STAT_DUP_DETECTED;
goto ignore;
}
}
if (usage->code > max) {
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 = 0xFF;
}
if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) {
input_set_abs_params(input, usage->code, a, b, (b - a) >> 0x8, (b - a) >> 0x4);
} else {
input_set_abs_params(input, usage->code, a, b, 0, 0);
}
input_abs_set_res(input, usage->code, hidinput_calc_abs_res(field, usage->code));
if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) {
input_set_events_per_packet(input, 0x3C);
}
}
if (usage->type == EV_ABS && (usage->hat_min < usage->hat_max || usage->hat_dir)) {
int i;
for (i = usage->code; i < usage->code + 0x2 && 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;
}
}
* we emulate pressing volumeup/volumedown appropriate number of times
* in hidinput_hid_event()
*/
if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->code == ABS_VOLUME)) {
set_bit(KEY_VOLUMEUP, input->keybit);
set_bit(KEY_VOLUMEDOWN, input->keybit);
}
if (usage->type == EV_KEY) {
set_bit(EV_MSC, input->evbit);
set_bit(MSC_SCAN, input->mscbit);
}
return;
ignore:
usage->type = 0;
usage->code = 0;
}
static void hidinput_handle_scroll(struct hid_usage *usage, struct input_dev *input, __s32 value)
{
int code;
int hi_res, lo_res;
if (value == 0) {
return;
}
if (usage->code == REL_WHEEL_HI_RES) {
code = REL_WHEEL;
} else {
code = REL_HWHEEL;
}
* Windows reports one wheel click as value 120. Where a high-res
* scroll wheel is present, a fraction of 120 is reported instead.
* Our REL_WHEEL_HI_RES axis does the same because all HW must
* adhere to the 120 expectation.
*/
hi_res = value * 0x78 / usage->resolution_multiplier;
usage->wheel_accumulated += hi_res;
lo_res = usage->wheel_accumulated / 0x78;
if (lo_res) {
usage->wheel_accumulated -= lo_res * 0x78;
}
input_event(input, EV_REL, code, lo_res);
input_event(input, EV_REL, usage->code, hi_res);
}
void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
{
struct input_dev *input;
unsigned *quirks = &hid->quirks;
if (!usage->type) {
return;
}
if (usage->type == EV_PWR) {
hidinput_update_battery(hid, value);
return;
}
if (!field->hidinput) {
return;
}
input = field->hidinput->input;
if (usage->type == EV_ABS &&
(((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))) {
value = field->logical_maximum - value;
}
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) * 0x8 / (usage->hat_max - usage->hat_min + 1) + 1;
}
if (hat_dir < 0 || hat_dir > 0x8) {
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)) {
*quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
return;
}
if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) {
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)) {
int a = field->logical_minimum;
int b = field->logical_maximum;
input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 0x3));
}
if (usage->hid == (HID_UP_PID | 0x83UL)) {
dbg_hid("Maximum Effects - %d\n", value);
return;
}
if (usage->hid == (HID_UP_PID | 0x7fUL)) {
dbg_hid("PID Pool Report\n");
return;
}
if ((usage->type == EV_KEY) && (usage->code == 0)) {
return;
}
if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || usage->code == REL_HWHEEL_HI_RES)) {
hidinput_handle_scroll(usage, input, value);
return;
}
if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->code == ABS_VOLUME)) {
int count = abs(value);
int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
int i;
for (i = 0; i < count; i++) {
input_event(input, EV_KEY, direction, 1);
input_sync(input);
input_event(input, EV_KEY, direction, 0);
input_sync(input);
}
return;
}
* Ignore out-of-range values as per HID specification,
* section 5.10 and 6.2.25, when NULL state bit is present.
* When it's not, clamp the value to match Microsoft's input
* driver as mentioned in "Required HID usages for digitizers":
* https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
*
* The logical_minimum < logical_maximum check is done so that we
* don't unintentionally discard values sent by devices which
* don't specify logical min and max.
*/
if ((field->flags & HID_MAIN_ITEM_VARIABLE) && (field->logical_minimum < field->logical_maximum)) {
if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
(value < field->logical_minimum || value > field->logical_maximum)) {
dbg_hid("Ignoring out-of-range value %x\n", value);
return;
}
value = clamp(value, field->logical_minimum, field->logical_maximum);
}
* Ignore reports for absolute data if the data didn't change. This is
* not only an optimization but also fixes 'dead' key reports. Some
* RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
* 0x31 and 0x32) report multiple keys, even though a localized keyboard
* can only have one of them physically available. The 'dead' keys
* report constant 0. As all map to the same keycode, they'd confuse
* the input layer. If we filter the 'dead' keys on the HID level, we
* skip the keycode translation and only forward real events.
*/
if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | HID_MAIN_ITEM_BUFFERED_BYTE)) &&
(field->flags & HID_MAIN_ITEM_VARIABLE) && usage->usage_index < field->maxusage &&
value == field->value[usage->usage_index]) {
return;
}
if (usage->type == EV_KEY && (!test_bit(usage->code, input->key)) == value) {
input_event(input, EV_MSC, MSC_SCAN, usage->hid);
}
input_event(input, usage->type, usage->code, value);
if ((field->flags & HID_MAIN_ITEM_RELATIVE) && usage->type == EV_KEY && value) {
input_sync(input);
input_event(input, usage->type, usage->code, 0);
}
}
void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
{
struct hid_input *hidinput;
if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) {
return;
}
list_for_each_entry(hidinput, &hid->inputs, list) input_sync(hidinput->input);
}
EXPORT_SYMBOL_GPL(hidinput_report_event);
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;
}
EXPORT_SYMBOL_GPL(hidinput_find_field);
struct hid_field *hidinput_get_led_field(struct hid_device *hid)
{
struct hid_report *report;
struct hid_field *field;
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 == EV_LED) {
return field;
}
}
}
}
return NULL;
}
EXPORT_SYMBOL_GPL(hidinput_get_led_field);
unsigned int hidinput_count_leds(struct hid_device *hid)
{
struct hid_report *report;
struct hid_field *field;
int i, j;
unsigned int count = 0;
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 == EV_LED && field->value[j]) {
count += 1;
}
}
}
}
return count;
}
EXPORT_SYMBOL_GPL(hidinput_count_leds);
static void hidinput_led_worker(struct work_struct *work)
{
struct hid_device *hid = container_of(work, struct hid_device, led_work);
struct hid_field *field;
struct hid_report *report;
int ret;
u32 len;
__u8 *buf;
field = hidinput_get_led_field(hid);
if (!field) {
return;
}
* field->report is accessed unlocked regarding HID core. So there might
* be another incoming SET-LED request from user-space, which changes
* the LED state while we assemble our outgoing buffer. However, this
* doesn't matter as hid_output_report() correctly converts it into a
* boolean value no matter what information is currently set on the LED
* field (even garbage). So the remote device will always get a valid
* request.
* And in case we send a wrong value, a next led worker is spawned
* for every SET-LED request so the following worker will send the
* correct value, guaranteed!
*/
report = field->report;
if (hid->ll_driver->request) {
return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
}
len = hid_report_len(report);
buf = hid_alloc_report_buf(report, GFP_KERNEL);
if (!buf) {
return;
}
hid_output_report(report, buf);
ret = hid_hw_output_report(hid, buf, len);
if (ret == -ENOSYS) {
hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);
}
kfree(buf);
}
static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
{
struct hid_device *hid = input_get_drvdata(dev);
struct hid_field *field;
int offset;
if (type == EV_FF) {
return input_ff_event(dev, type, code, value);
}
if (type != EV_LED) {
return -1;
}
if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
hid_warn(dev, "event field not found\n");
return -1;
}
hid_set_field(field, offset, value);
schedule_work(&hid->led_work);
return 0;
}
static int hidinput_open(struct input_dev *dev)
{
struct hid_device *hid = input_get_drvdata(dev);
return hid_hw_open(hid);
}
static void hidinput_close(struct input_dev *dev)
{
struct hid_device *hid = input_get_drvdata(dev);
hid_hw_close(hid);
}
static bool __hidinput_change_resolution_multipliers(struct hid_device *hid, struct hid_report *report,
bool use_logical_max)
{
struct hid_usage *usage;
bool update_needed = false;
bool get_report_completed = false;
int i, j;
if (report->maxfield == 0) {
return false;
}
for (i = 0; i < report->maxfield; i++) {
__s32 value = use_logical_max ? report->field[i]->logical_maximum : report->field[i]->logical_minimum;
* Multiplier to have a count other than 1.
* Ignore that case.
*/
if (report->field[i]->report_count != 1) {
continue;
}
for (j = 0; j < report->field[i]->maxusage; j++) {
usage = &report->field[i]->usage[j];
if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER) {
continue;
}
* If we have more than one feature within this
* report we need to fill in the bits from the
* others before we can overwrite the ones for the
* Resolution Multiplier.
*
* But if we're not allowed to read from the device,
* we just bail. Such a device should not exist
* anyway.
*/
if (!get_report_completed && report->maxfield > 1) {
if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) {
return update_needed;
}
hid_hw_request(hid, report, HID_REQ_GET_REPORT);
hid_hw_wait(hid);
get_report_completed = true;
}
report->field[i]->value[j] = value;
update_needed = true;
}
}
return update_needed;
}
static void hidinput_change_resolution_multipliers(struct hid_device *hid)
{
struct hid_report_enum *rep_enum;
struct hid_report *rep;
int ret;
rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
list_for_each_entry(rep, &rep_enum->report_list, list)
{
bool update_needed = __hidinput_change_resolution_multipliers(hid, rep, true);
if (update_needed) {
ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
if (ret) {
__hidinput_change_resolution_multipliers(hid, rep, false);
return;
}
}
}
hid_setup_resolution_multiplier(hid);
}
static void report_features(struct hid_device *hid)
{
struct hid_driver *drv = hid->driver;
struct hid_report_enum *rep_enum;
struct hid_report *rep;
struct hid_usage *usage;
int i, j;
rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
list_for_each_entry(rep, &rep_enum->report_list, list) {
for (i = 0; i < rep->maxfield; i++) {
if (rep->field[i]->report_count < 1) {
continue;
}
for (j = 0; j < rep->field[i]->maxusage; j++) {
usage = &rep->field[i]->usage[j];
if (usage->hid == HID_DC_BATTERYSTRENGTH) {
hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
}
if (drv->feature_mapping) {
drv->feature_mapping(hid, rep->field[i], usage);
}
}
}
}
}
static struct hid_input *hidinput_allocate(struct hid_device *hid, unsigned int application)
{
struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
struct input_dev *input_dev = input_allocate_device();
const char *suffix = NULL;
size_t suffix_len, name_len;
if (!hidinput || !input_dev) {
goto fail;
}
if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && hid->maxapplication > 1) {
switch (application) {
case HID_GD_KEYBOARD:
suffix = "Keyboard";
break;
case HID_GD_KEYPAD:
suffix = "Keypad";
break;
case HID_GD_MOUSE:
suffix = "Mouse";
break;
case HID_DG_STYLUS:
suffix = "Pen";
break;
case HID_DG_TOUCHSCREEN:
suffix = "Touchscreen";
break;
case HID_DG_TOUCHPAD:
suffix = "Touchpad";
break;
case HID_GD_SYSTEM_CONTROL:
suffix = "System Control";
break;
case HID_CP_CONSUMER_CONTROL:
suffix = "Consumer Control";
break;
case HID_GD_WIRELESS_RADIO_CTLS:
suffix = "Wireless Radio Control";
break;
case HID_GD_SYSTEM_MULTIAXIS:
suffix = "System Multi Axis";
break;
default:
break;
}
}
if (suffix) {
name_len = strlen(hid->name);
suffix_len = strlen(suffix);
if ((name_len < suffix_len) || strcmp(hid->name + name_len - suffix_len, suffix)) {
hidinput->name = kasprintf(GFP_KERNEL, "%s %s", hid->name, suffix);
if (!hidinput->name) {
goto fail;
}
}
}
input_set_drvdata(input_dev, hid);
input_dev->event = hidinput_input_event;
input_dev->open = hidinput_open;
input_dev->close = hidinput_close;
input_dev->setkeycode = hidinput_setkeycode;
input_dev->getkeycode = hidinput_getkeycode;
input_dev->name = hidinput->name ? hidinput->name : hid->name;
input_dev->phys = hid->phys;
input_dev->uniq = hid->uniq;
input_dev->id.bustype = hid->bus;
input_dev->id.vendor = hid->vendor;
input_dev->id.product = hid->product;
input_dev->id.version = hid->version;
input_dev->dev.parent = &hid->dev;
hidinput->input = input_dev;
hidinput->application = application;
list_add_tail(&hidinput->list, &hid->inputs);
INIT_LIST_HEAD(&hidinput->reports);
return hidinput;
fail:
kfree(hidinput);
input_free_device(input_dev);
hid_err(hid, "Out of memory during hid input probe\n");
return NULL;
}
static bool hidinput_has_been_populated(struct hid_input *hidinput)
{
int i;
unsigned long r = 0;
for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) {
r |= hidinput->input->evbit[i];
}
for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) {
r |= hidinput->input->keybit[i];
}
for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) {
r |= hidinput->input->relbit[i];
}
for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) {
r |= hidinput->input->absbit[i];
}
for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) {
r |= hidinput->input->mscbit[i];
}
for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) {
r |= hidinput->input->ledbit[i];
}
for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) {
r |= hidinput->input->sndbit[i];
}
for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) {
r |= hidinput->input->ffbit[i];
}
for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) {
r |= hidinput->input->swbit[i];
}
return !!r;
}
static void hidinput_cleanup_hidinput(struct hid_device *hid, struct hid_input *hidinput)
{
struct hid_report *report;
int i, k;
list_del(&hidinput->list);
input_free_device(hidinput->input);
kfree(hidinput->name);
for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
if ((k == HID_OUTPUT_REPORT) && (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)) {
continue;
}
list_for_each_entry(report, &hid->report_enum[k].report_list, list)
{
for (i = 0; i < report->maxfield; i++) {
if (report->field[i]->hidinput == hidinput) {
report->field[i]->hidinput = NULL;
}
}
}
}
kfree(hidinput);
}
static struct hid_input *hidinput_match(struct hid_report *report)
{
struct hid_device *hid = report->device;
struct hid_input *hidinput;
list_for_each_entry(hidinput, &hid->inputs, list)
{
if (hidinput->report && hidinput->report->id == report->id) {
return hidinput;
}
}
return NULL;
}
static struct hid_input *hidinput_match_application(struct hid_report *report)
{
struct hid_device *hid = report->device;
struct hid_input *hidinput;
list_for_each_entry(hidinput, &hid->inputs, list)
{
if (hidinput->application == report->application) {
return hidinput;
}
}
return NULL;
}
static inline void hidinput_configure_usages(struct hid_input *hidinput, struct hid_report *report)
{
int i, j;
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);
}
}
}
* 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, unsigned int force)
{
struct hid_driver *drv = hid->driver;
struct hid_report *report;
struct hid_input *next, *hidinput = NULL;
unsigned int application;
int i, k;
INIT_LIST_HEAD(&hid->inputs);
INIT_WORK(&hid->led_work, hidinput_led_worker);
hid->status &= ~HID_STAT_DUP_DETECTED;
if (!force) {
for (i = 0; i < hid->maxcollection; i++) {
struct hid_collection *col = &hid->collection[i];
if (col->type == HID_COLLECTION_APPLICATION || col->type == HID_COLLECTION_PHYSICAL) {
if (IS_INPUT_APPLICATION(col->usage)) {
break;
}
}
}
if (i == hid->maxcollection) {
return -1;
}
}
report_features(hid);
for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
if ((k == HID_OUTPUT_REPORT) && (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)) {
continue;
}
list_for_each_entry(report, &hid->report_enum[k].report_list, list)
{
if (!report->maxfield) {
continue;
}
application = report->application;
* Find the previous hidinput report attached
* to this report id.
*/
if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
hidinput = hidinput_match(report);
} else if (hid->maxapplication > 1 && (hid->quirks & HID_QUIRK_INPUT_PER_APP)) {
hidinput = hidinput_match_application(report);
}
if (!hidinput) {
hidinput = hidinput_allocate(hid, application);
if (!hidinput) {
goto out_unwind;
}
}
hidinput_configure_usages(hidinput, report);
if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
hidinput->report = report;
}
list_add_tail(&report->hidinput_list, &hidinput->reports);
}
}
hidinput_change_resolution_multipliers(hid);
list_for_each_entry_safe(hidinput, next, &hid->inputs, list)
{
if (drv->input_configured && drv->input_configured(hid, hidinput)) {
goto out_unwind;
}
if (!hidinput_has_been_populated(hidinput)) {
hidinput_cleanup_hidinput(hid, hidinput);
continue;
}
if (input_register_device(hidinput->input)) {
goto out_unwind;
}
hidinput->registered = true;
}
if (list_empty(&hid->inputs)) {
hid_err(hid, "No inputs registered, leaving\n");
goto out_unwind;
}
if (hid->status & HID_STAT_DUP_DETECTED) {
hid_dbg(hid, "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is "
"legitimate.\n");
}
return 0;
out_unwind:
hidinput_disconnect(hid);
return -1;
}
EXPORT_SYMBOL_GPL(hidinput_connect);
void hidinput_disconnect(struct hid_device *hid)
{
struct hid_input *hidinput, *next;
hidinput_cleanup_battery(hid);
list_for_each_entry_safe(hidinput, next, &hid->inputs, list)
{
list_del(&hidinput->list);
if (hidinput->registered) {
input_unregister_device(hidinput->input);
} else {
input_free_device(hidinput->input);
}
kfree(hidinput->name);
kfree(hidinput);
}
* parent input_dev at all. Once all input devices are removed, we
* know that led_work will never get restarted, so we can cancel it
* synchronously and are safe. */
cancel_work_sync(&hid->led_work);
}
EXPORT_SYMBOL_GPL(hidinput_disconnect);