diff options
Diffstat (limited to 'drivers/hid/hid-multitouch.c')
| -rw-r--r-- | drivers/hid/hid-multitouch.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 13b94619b5d0..87690e2726ac 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -54,6 +54,7 @@ MODULE_LICENSE("GPL"); #define MT_QUIRK_NO_AREA (1 << 9) #define MT_QUIRK_IGNORE_DUPLICATES (1 << 10) #define MT_QUIRK_HOVERING (1 << 11) +#define MT_QUIRK_CONTACT_CNT_ACCURATE (1 << 12) struct mt_slot { __s32 x, y, cx, cy, p, w, h; @@ -83,6 +84,7 @@ struct mt_device { struct mt_class mtclass; /* our mt device class */ struct mt_fields *fields; /* temporary placeholder for storing the multitouch fields */ + __s32 *contactcount; /* contact count value in the report */ unsigned last_field_index; /* last field index of the report */ unsigned last_slot_field; /* the last field of a slot */ unsigned mt_report_id; /* the report ID of the multitouch device */ @@ -112,6 +114,7 @@ struct mt_device { #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 0x0007 #define MT_CLS_DUAL_NSMU_CONTACTID 0x0008 #define MT_CLS_INRANGE_CONTACTNUMBER 0x0009 +#define MT_CLS_ALWAYS_TRUE 0x000a /* vendor specific classes */ #define MT_CLS_3M 0x0101 @@ -171,6 +174,9 @@ static struct mt_class mt_classes[] = { { .name = MT_CLS_INRANGE_CONTACTNUMBER, .quirks = MT_QUIRK_VALID_IS_INRANGE | MT_QUIRK_SLOT_IS_CONTACTNUMBER }, + { .name = MT_CLS_ALWAYS_TRUE, + .quirks = MT_QUIRK_ALWAYS_VALID | + MT_QUIRK_CONTACT_CNT_ACCURATE }, /* * vendor specific classes @@ -251,6 +257,9 @@ static ssize_t mt_set_quirks(struct device *dev, td->mtclass.quirks = val; + if (!td->contactcount) + td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; + return count; } @@ -461,6 +470,7 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, td->last_field_index = field->index; return 1; case HID_DG_CONTACTCOUNT: + td->contactcount = field->value + usage->usage_index; td->last_field_index = field->index; return 1; case HID_DG_CONTACTMAX: @@ -525,6 +535,10 @@ static int mt_compute_slot(struct mt_device *td, struct input_dev *input) */ static void mt_complete_slot(struct mt_device *td, struct input_dev *input) { + if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) && + td->num_received >= td->num_expected) + return; + if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) { int slotnum = mt_compute_slot(td, input); struct mt_slot *s = &td->curdata; @@ -635,12 +649,6 @@ static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field, td->curdata.h = value; break; case HID_DG_CONTACTCOUNT: - /* - * Includes multi-packet support where subsequent - * packets are sent with zero contactcount. - */ - if (value) - td->num_expected = value; break; case HID_DG_TOUCH: /* do nothing */ @@ -676,6 +684,13 @@ static void mt_report(struct hid_device *hid, struct hid_report *report) if (!(hid->claimed & HID_CLAIMED_INPUT)) return; + /* + * Includes multi-packet support where subsequent + * packets are sent with zero contactcount. + */ + if (td->contactcount && *td->contactcount) + td->num_expected = *td->contactcount; + for (r = 0; r < report->maxfield; r++) { field = report->field[r]; count = field->report_count; @@ -750,11 +765,15 @@ static void mt_post_parse_default_settings(struct mt_device *td) static void mt_post_parse(struct mt_device *td) { struct mt_fields *f = td->fields; + struct mt_class *cls = &td->mtclass; if (td->touches_by_report > 0) { int field_count_per_touch = f->length / td->touches_by_report; td->last_slot_field = f->usages[field_count_per_touch - 1]; } + + if (!td->contactcount) + cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; } static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi) @@ -1087,6 +1106,11 @@ static const struct hid_device_id mt_devices[] = { MT_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) }, + /* Nexio panels */ + { .driver_data = MT_CLS_ALWAYS_TRUE, + MT_USB_DEVICE(USB_VENDOR_ID_NEXIO, + USB_DEVICE_ID_NEXIO_MULTITOUCH_420)}, + /* Panasonic panels */ { .driver_data = MT_CLS_PANASONIC, MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC, |