static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
struct mt_device *td = hid_get_drvdata(hdev);
struct mt_class *cls = &td->mtclass;
int code;
/* Only map fields from TouchScreen or TouchPad collections.
* We need to ignore fields that belong to other collections
* such as Mouse that might have the same GenericDesktop usages. */
if (field->application == HID_DG_TOUCHSCREEN)
set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
else if (field->application != HID_DG_TOUCHPAD)
return 0;
/* In case of an indirect device (touchpad), we need to add
* specific BTN_TOOL_* to be handled by the synaptics xorg
* driver.
* We also consider that touchscreens providing buttons are touchpads.
*/
if (field->application == HID_DG_TOUCHPAD ||
(usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON ||
cls->is_indirect) {
set_bit(INPUT_PROP_POINTER, hi->input->propbit);
set_bit(BTN_TOOL_FINGER, hi->input->keybit);
set_bit(BTN_TOOL_DOUBLETAP, hi->input->keybit);
set_bit(BTN_TOOL_TRIPLETAP, hi->input->keybit);
set_bit(BTN_TOOL_QUADTAP, hi->input->keybit);
}
/* eGalax devices provide a Digitizer.Stylus input which overrides
* the correct Digitizers.Finger X/Y ranges.
* Let's just ignore this input. */
if (field->physical == HID_DG_STYLUS)
return -1;
/* Only map fields from TouchScreen or TouchPad collections.
* We need to ignore fields that belong to other collections
* such as Mouse that might have the same GenericDesktop usages. */
if (field->application == HID_DG_TOUCHSCREEN)
set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
else if (field->application == HID_DG_TOUCHPAD)
set_bit(INPUT_PROP_POINTER, hi->input->propbit);
else
return 0;
switch (usage->hid & HID_USAGE_PAGE) {
case HID_UP_GENDESK:
switch (usage->hid) {
case HID_GD_X:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_POSITION_X);
set_abs(hi->input, ABS_MT_POSITION_X, field,
cls->sn_move);
/* touchscreen emulation */
set_abs(hi->input, ABS_X, field, cls->sn_move);
mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_GD_Y:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_POSITION_Y);
set_abs(hi->input, ABS_MT_POSITION_Y, field,
cls->sn_move);
/* touchscreen emulation */
set_abs(hi->input, ABS_Y, field, cls->sn_move);
mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
}
return 0;
case HID_UP_DIGITIZER:
switch (usage->hid) {
case HID_DG_INRANGE:
mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_CONFIDENCE:
mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_TIPSWITCH:
hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_CONTACTID:
if (!td->maxcontacts)
td->maxcontacts = MT_DEFAULT_MAXCONTACT;
input_mt_init_slots(hi->input, td->maxcontacts);
mt_store_field(usage, td, hi);
td->last_field_index = field->index;
td->touches_by_report++;
return 1;
case HID_DG_WIDTH:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TOUCH_MAJOR);
set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
cls->sn_width);
mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_HEIGHT:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TOUCH_MINOR);
set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
cls->sn_height);
input_set_abs_params(hi->input,
ABS_MT_ORIENTATION, 0, 1, 0, 0);
mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_TIPPRESSURE:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_PRESSURE);
set_abs(hi->input, ABS_MT_PRESSURE, field,
cls->sn_pressure);
/* touchscreen emulation */
set_abs(hi->input, ABS_PRESSURE, field,
cls->sn_pressure);
mt_store_field(usage, td, hi);
td->last_field_index = field->index;
return 1;
case HID_DG_CONTACTCOUNT:
td->last_field_index = field->index;
return 1;
case HID_DG_CONTACTMAX:
/* we don't set td->last_slot_field as contactcount and
* contact max are global to the report */
td->last_field_index = field->index;
return -1;
}
case HID_DG_TOUCH:
/* Legacy devices use TIPSWITCH and not TOUCH.
* Let's just ignore this field. */
return -1;
/* let hid-input decide for the others */
return 0;
case HID_UP_BUTTON:
code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
hid_map_usage(hi, usage, bit, max, EV_KEY, code);
input_set_capability(hi->input, EV_KEY, code);
return 1;
case 0xff000000:
/* we do not want to map these: no input-oriented meaning */
return -1;
}
return 0;
}
static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
struct mt_device *td = hid_get_drvdata(hdev);
struct mt_class *cls = &td->mtclass;
int code;
struct hid_usage *prev_usage = NULL;
if (field->application == HID_DG_TOUCHSCREEN)
td->mt_flags |= INPUT_MT_DIRECT;
/*
* Model touchscreens providing buttons as touchpads.
*/
if (field->application == HID_DG_TOUCHPAD ||
(usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
td->mt_flags |= INPUT_MT_POINTER;
td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
}
/* count the buttons on touchpads */
if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
td->buttons_count++;
if (usage->usage_index)
prev_usage = &field->usage[usage->usage_index - 1];
switch (usage->hid & HID_USAGE_PAGE) {
case HID_UP_GENDESK:
switch (usage->hid) {
case HID_GD_X:
if (prev_usage && (prev_usage->hid == usage->hid)) {
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TOOL_X);
set_abs(hi->input, ABS_MT_TOOL_X, field,
cls->sn_move);
} else {
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_POSITION_X);
set_abs(hi->input, ABS_MT_POSITION_X, field,
cls->sn_move);
}
mt_store_field(usage, td, hi);
return 1;
case HID_GD_Y:
if (prev_usage && (prev_usage->hid == usage->hid)) {
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TOOL_Y);
set_abs(hi->input, ABS_MT_TOOL_Y, field,
cls->sn_move);
} else {
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_POSITION_Y);
set_abs(hi->input, ABS_MT_POSITION_Y, field,
cls->sn_move);
}
mt_store_field(usage, td, hi);
return 1;
}
return 0;
case HID_UP_DIGITIZER:
switch (usage->hid) {
case HID_DG_INRANGE:
if (cls->quirks & MT_QUIRK_HOVERING) {
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_DISTANCE);
input_set_abs_params(hi->input,
ABS_MT_DISTANCE, 0, 1, 0, 0);
}
mt_store_field(usage, td, hi);
return 1;
case HID_DG_CONFIDENCE:
if (cls->name == MT_CLS_WIN_8 &&
field->application == HID_DG_TOUCHPAD)
cls->quirks |= MT_QUIRK_CONFIDENCE;
mt_store_field(usage, td, hi);
return 1;
case HID_DG_TIPSWITCH:
hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
mt_store_field(usage, td, hi);
return 1;
case HID_DG_CONTACTID:
mt_store_field(usage, td, hi);
td->touches_by_report++;
td->mt_report_id = field->report->id;
return 1;
case HID_DG_WIDTH:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TOUCH_MAJOR);
if (!(cls->quirks & MT_QUIRK_NO_AREA))
set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
cls->sn_width);
mt_store_field(usage, td, hi);
return 1;
case HID_DG_HEIGHT:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TOUCH_MINOR);
if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
cls->sn_height);
input_set_abs_params(hi->input,
ABS_MT_ORIENTATION, 0, 1, 0, 0);
}
mt_store_field(usage, td, hi);
return 1;
case HID_DG_TIPPRESSURE:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_PRESSURE);
set_abs(hi->input, ABS_MT_PRESSURE, field,
cls->sn_pressure);
mt_store_field(usage, td, hi);
return 1;
case HID_DG_CONTACTCOUNT:
/* Ignore if indexes are out of bounds. */
if (field->index >= field->report->maxfield ||
usage->usage_index >= field->report_count)
return 1;
td->cc_index = field->index;
td->cc_value_index = usage->usage_index;
return 1;
case HID_DG_CONTACTMAX:
/* we don't set td->last_slot_field as contactcount and
* contact max are global to the report */
return -1;
case HID_DG_TOUCH:
/* Legacy devices use TIPSWITCH and not TOUCH.
* Let's just ignore this field. */
return -1;
}
/* let hid-input decide for the others */
return 0;
case HID_UP_BUTTON:
code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
/*
* MS PTP spec says that external buttons left and right have
* usages 2 and 3.
*/
if (cls->name == MT_CLS_WIN_8 &&
field->application == HID_DG_TOUCHPAD &&
(usage->hid & HID_USAGE) > 1)
code--;
hid_map_usage(hi, usage, bit, max, EV_KEY, code);
input_set_capability(hi->input, EV_KEY, code);
return 1;
case 0xff000000:
/* we do not want to map these: no input-oriented meaning */
return -1;
}
return 0;
}
static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
struct mt_device *td = hid_get_drvdata(hdev);
struct mt_class *cls = &td->mtclass;
int code;
struct hid_usage *prev_usage = NULL;
if (field->application == HID_DG_TOUCHSCREEN)
td->mt_flags |= INPUT_MT_DIRECT;
/*
* Model touchscreens providing buttons as touchpads.
*/
if (field->application == HID_DG_TOUCHPAD ||
(usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
td->mt_flags |= INPUT_MT_POINTER;
/* Only map fields from TouchScreen or TouchPad collections.
* We need to ignore fields that belong to other collections
* such as Mouse that might have the same GenericDesktop usages. */
if (field->application == HID_DG_TOUCHSCREEN)
set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
else if (field->application == HID_DG_TOUCHPAD)
set_bit(INPUT_PROP_POINTER, hi->input->propbit);
else
return 0;
if (usage->usage_index)
prev_usage = &field->usage[usage->usage_index - 1];
switch (usage->hid & HID_USAGE_PAGE) {
case HID_UP_GENDESK:
switch (usage->hid) {
case HID_GD_X:
if (prev_usage && (prev_usage->hid == usage->hid)) {
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TOOL_X);
set_abs(hi->input, ABS_MT_TOOL_X, field,
cls->sn_move);
} else {
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_POSITION_X);
set_abs(hi->input, ABS_MT_POSITION_X, field,
cls->sn_move);
}
mt_store_field(usage, td, hi);
return 1;
case HID_GD_Y:
if (prev_usage && (prev_usage->hid == usage->hid)) {
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TOOL_Y);
set_abs(hi->input, ABS_MT_TOOL_Y, field,
cls->sn_move);
} else {
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_POSITION_Y);
set_abs(hi->input, ABS_MT_POSITION_Y, field,
cls->sn_move);
}
mt_store_field(usage, td, hi);
return 1;
}
return 0;
case HID_UP_DIGITIZER:
switch (usage->hid) {
case HID_DG_INRANGE:
if (cls->quirks & MT_QUIRK_HOVERING) {
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_DISTANCE);
input_set_abs_params(hi->input,
ABS_MT_DISTANCE, 0, 1, 0, 0);
}
mt_store_field(usage, td, hi);
return 1;
case HID_DG_CONFIDENCE:
mt_store_field(usage, td, hi);
return 1;
case HID_DG_TIPSWITCH:
hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
mt_store_field(usage, td, hi);
return 1;
case HID_DG_CONTACTID:
mt_store_field(usage, td, hi);
td->touches_by_report++;
td->mt_report_id = field->report->id;
return 1;
case HID_DG_WIDTH:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TOUCH_MAJOR);
if (!(cls->quirks & MT_QUIRK_NO_AREA))
set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
cls->sn_width);
mt_store_field(usage, td, hi);
return 1;
case HID_DG_HEIGHT:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_TOUCH_MINOR);
if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
cls->sn_height);
input_set_abs_params(hi->input,
ABS_MT_ORIENTATION, 0, 1, 0, 0);
}
mt_store_field(usage, td, hi);
return 1;
case HID_DG_TIPPRESSURE:
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_PRESSURE);
set_abs(hi->input, ABS_MT_PRESSURE, field,
cls->sn_pressure);
mt_store_field(usage, td, hi);
return 1;
case HID_DG_CONTACTCOUNT:
td->cc_index = field->index;
td->cc_value_index = usage->usage_index;
return 1;
case HID_DG_CONTACTMAX:
/* we don't set td->last_slot_field as contactcount and
* contact max are global to the report */
return -1;
case HID_DG_TOUCH:
/* Legacy devices use TIPSWITCH and not TOUCH.
* Let's just ignore this field. */
return -1;
}
/* let hid-input decide for the others */
return 0;
case HID_UP_BUTTON:
code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
hid_map_usage(hi, usage, bit, max, EV_KEY, code);
input_set_capability(hi->input, EV_KEY, code);
return 1;
case 0xff000000:
/* we do not want to map these: no input-oriented meaning */
return -1;
}
return 0;
}