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path: root/drivers/hid/hid-multitouch.c
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Diffstat (limited to 'drivers/hid/hid-multitouch.c')
-rw-r--r--drivers/hid/hid-multitouch.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 6dca66806844..692647485a53 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -68,6 +68,7 @@ MODULE_LICENSE("GPL");
#define MT_QUIRK_HOVERING (1 << 11)
#define MT_QUIRK_CONTACT_CNT_ACCURATE (1 << 12)
#define MT_QUIRK_FORCE_GET_FEATURE (1 << 13)
+#define MT_QUIRK_FIX_CONST_CONTACT_ID (1 << 14)
#define MT_INPUTMODE_TOUCHSCREEN 0x02
#define MT_INPUTMODE_TOUCHPAD 0x03
@@ -157,6 +158,7 @@ static void mt_post_parse(struct mt_device *td);
#define MT_CLS_FLATFROG 0x0107
#define MT_CLS_GENERALTOUCH_TWOFINGERS 0x0108
#define MT_CLS_GENERALTOUCH_PWT_TENFINGERS 0x0109
+#define MT_CLS_LG 0x010a
#define MT_CLS_VTL 0x0110
#define MT_DEFAULT_MAXCONTACT 10
@@ -263,6 +265,12 @@ static struct mt_class mt_classes[] = {
.sn_move = 2048,
.maxcontacts = 40,
},
+ { .name = MT_CLS_LG,
+ .quirks = MT_QUIRK_ALWAYS_VALID |
+ MT_QUIRK_FIX_CONST_CONTACT_ID |
+ MT_QUIRK_IGNORE_DUPLICATES |
+ MT_QUIRK_HOVERING |
+ MT_QUIRK_CONTACT_CNT_ACCURATE },
{ .name = MT_CLS_VTL,
.quirks = MT_QUIRK_ALWAYS_VALID |
MT_QUIRK_CONTACT_CNT_ACCURATE |
@@ -1078,6 +1086,34 @@ static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
return 0;
}
+static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
+{
+ if (field->usage[0].hid != usage ||
+ !(field->flags & HID_MAIN_ITEM_CONSTANT))
+ return;
+
+ field->flags &= ~HID_MAIN_ITEM_CONSTANT;
+ field->flags |= HID_MAIN_ITEM_VARIABLE;
+}
+
+static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
+{
+ struct hid_report *report;
+ int i;
+
+ list_for_each_entry(report,
+ &hdev->report_enum[HID_INPUT_REPORT].report_list,
+ list) {
+
+ if (!report->maxfield)
+ continue;
+
+ for (i = 0; i < report->maxfield; i++)
+ if (report->field[i]->maxusage >= 1)
+ mt_fix_const_field(report->field[i], usage);
+ }
+}
+
static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret, i;
@@ -1151,6 +1187,9 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
if (ret != 0)
return ret;
+ if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
+ mt_fix_const_fields(hdev, HID_DG_CONTACTID);
+
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
if (ret)
return ret;
@@ -1398,6 +1437,11 @@ static const struct hid_device_id mt_devices[] = {
MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
USB_DEVICE_ID_ILITEK_MULTITOUCH) },
+ /* LG Melfas panel */
+ { .driver_data = MT_CLS_LG,
+ HID_USB_DEVICE(USB_VENDOR_ID_LG,
+ USB_DEVICE_ID_LG_MELFAS_MT) },
+
/* MosArt panels */
{ .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
MT_USB_DEVICE(USB_VENDOR_ID_ASUS,