summaryrefslogtreecommitdiff
path: root/drivers/hid/hid-multitouch.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/hid/hid-multitouch.c')
-rw-r--r--drivers/hid/hid-multitouch.c74
1 files changed, 51 insertions, 23 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index ecd4d2db9e8..62cac4dc3b6 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -64,6 +64,7 @@ struct mt_device {
struct mt_class *mtclass; /* our mt device class */
unsigned last_field_index; /* last field index of the report */
unsigned last_slot_field; /* the last field of a slot */
+ int last_mt_collection; /* last known mt-related collection */
__s8 inputmode; /* InputMode HID feature, -1 if non-existent */
__u8 num_received; /* how many contacts we received */
__u8 num_expected; /* expected last contact index */
@@ -225,8 +226,10 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
cls->sn_move);
/* touchscreen emulation */
set_abs(hi->input, ABS_X, field, cls->sn_move);
- td->last_slot_field = usage->hid;
- td->last_field_index = field->index;
+ if (td->last_mt_collection == usage->collection_index) {
+ td->last_slot_field = usage->hid;
+ td->last_field_index = field->index;
+ }
return 1;
case HID_GD_Y:
if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
@@ -237,8 +240,10 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
cls->sn_move);
/* touchscreen emulation */
set_abs(hi->input, ABS_Y, field, cls->sn_move);
- td->last_slot_field = usage->hid;
- td->last_field_index = field->index;
+ if (td->last_mt_collection == usage->collection_index) {
+ td->last_slot_field = usage->hid;
+ td->last_field_index = field->index;
+ }
return 1;
}
return 0;
@@ -246,31 +251,42 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
case HID_UP_DIGITIZER:
switch (usage->hid) {
case HID_DG_INRANGE:
- td->last_slot_field = usage->hid;
- td->last_field_index = field->index;
+ if (td->last_mt_collection == usage->collection_index) {
+ td->last_slot_field = usage->hid;
+ td->last_field_index = field->index;
+ }
return 1;
case HID_DG_CONFIDENCE:
- td->last_slot_field = usage->hid;
- td->last_field_index = field->index;
+ if (td->last_mt_collection == usage->collection_index) {
+ td->last_slot_field = usage->hid;
+ 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);
- td->last_slot_field = usage->hid;
- td->last_field_index = field->index;
+ if (td->last_mt_collection == usage->collection_index) {
+ td->last_slot_field = usage->hid;
+ 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);
td->last_slot_field = usage->hid;
td->last_field_index = field->index;
+ td->last_mt_collection = usage->collection_index;
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);
- td->last_slot_field = usage->hid;
- td->last_field_index = field->index;
+ if (td->last_mt_collection == usage->collection_index) {
+ td->last_slot_field = usage->hid;
+ td->last_field_index = field->index;
+ }
return 1;
case HID_DG_HEIGHT:
hid_map_usage(hi, usage, bit, max,
@@ -279,8 +295,10 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
cls->sn_height);
input_set_abs_params(hi->input,
ABS_MT_ORIENTATION, 0, 1, 0, 0);
- td->last_slot_field = usage->hid;
- td->last_field_index = field->index;
+ if (td->last_mt_collection == usage->collection_index) {
+ td->last_slot_field = usage->hid;
+ td->last_field_index = field->index;
+ }
return 1;
case HID_DG_TIPPRESSURE:
if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
@@ -292,16 +310,20 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
/* touchscreen emulation */
set_abs(hi->input, ABS_PRESSURE, field,
cls->sn_pressure);
- td->last_slot_field = usage->hid;
- td->last_field_index = field->index;
+ if (td->last_mt_collection == usage->collection_index) {
+ td->last_slot_field = usage->hid;
+ td->last_field_index = field->index;
+ }
return 1;
case HID_DG_CONTACTCOUNT:
- td->last_field_index = field->index;
+ if (td->last_mt_collection == usage->collection_index)
+ 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;
+ if (td->last_mt_collection == usage->collection_index)
+ td->last_field_index = field->index;
return -1;
}
/* let hid-input decide for the others */
@@ -516,6 +538,7 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
}
td->mtclass = mtclass;
td->inputmode = -1;
+ td->last_mt_collection = -1;
hid_set_drvdata(hdev, td);
ret = hid_parse(hdev);
@@ -526,9 +549,6 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
if (ret)
goto fail;
- if (!td->maxcontacts)
- td->maxcontacts = MT_DEFAULT_MAXCONTACT;
-
td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
GFP_KERNEL);
if (!td->slots) {
@@ -593,6 +613,11 @@ static const struct hid_device_id mt_devices[] = {
HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
+ /* Chunghwa Telecom touch panels */
+ { .driver_data = MT_CLS_DEFAULT,
+ HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
+ USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
+
/* CVTouch panels */
{ .driver_data = MT_CLS_DEFAULT,
HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
@@ -651,6 +676,9 @@ static const struct hid_device_id mt_devices[] = {
{ .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
USB_DEVICE_ID_CRYSTALTOUCH) },
+ { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
+ HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
+ USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
/* MosArt panels */
{ .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
@@ -681,10 +709,10 @@ static const struct hid_device_id mt_devices[] = {
HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
USB_DEVICE_ID_MTP)},
{ .driver_data = MT_CLS_CONFIDENCE,
- HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
+ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
USB_DEVICE_ID_MTP_STM)},
{ .driver_data = MT_CLS_CONFIDENCE,
- HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
+ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
USB_DEVICE_ID_MTP_SITRONIX)},
/* Touch International panels */
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 02:06:48 +0000