diff options
Diffstat (limited to 'drivers/hid/hid-egalax.c')
| -rw-r--r-- | drivers/hid/hid-egalax.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/drivers/hid/hid-egalax.c b/drivers/hid/hid-egalax.c index f44bdc084cb..54b017ad258 100644 --- a/drivers/hid/hid-egalax.c +++ b/drivers/hid/hid-egalax.c @@ -31,7 +31,7 @@ struct egalax_data { bool first; /* is this the first finger in the frame? */ bool valid; /* valid finger data, or just placeholder? */ bool activity; /* at least one active finger previously? */ - __u16 lastx, lasty; /* latest valid (x, y) in the frame */ + __u16 lastx, lasty, lastz; /* latest valid (x, y, z) in the frame */ }; static int egalax_input_mapping(struct hid_device *hdev, struct hid_input *hi, @@ -79,6 +79,10 @@ static int egalax_input_mapping(struct hid_device *hdev, struct hid_input *hi, case HID_DG_TIPPRESSURE: hid_map_usage(hi, usage, bit, max, EV_ABS, ABS_MT_PRESSURE); + /* touchscreen emulation */ + input_set_abs_params(hi->input, ABS_PRESSURE, + field->logical_minimum, + field->logical_maximum, 0, 0); return 1; } return 0; @@ -109,8 +113,8 @@ static void egalax_filter_event(struct egalax_data *td, struct input_dev *input) if (td->valid) { /* emit multitouch events */ input_event(input, EV_ABS, ABS_MT_TRACKING_ID, td->id); - input_event(input, EV_ABS, ABS_MT_POSITION_X, td->x); - input_event(input, EV_ABS, ABS_MT_POSITION_Y, td->y); + input_event(input, EV_ABS, ABS_MT_POSITION_X, td->x >> 3); + input_event(input, EV_ABS, ABS_MT_POSITION_Y, td->y >> 3); input_event(input, EV_ABS, ABS_MT_PRESSURE, td->z); input_mt_sync(input); @@ -121,6 +125,7 @@ static void egalax_filter_event(struct egalax_data *td, struct input_dev *input) */ td->lastx = td->x; td->lasty = td->y; + td->lastz = td->z; } /* @@ -129,8 +134,9 @@ static void egalax_filter_event(struct egalax_data *td, struct input_dev *input) * the oldest on the panel, the one we want for single touch */ if (!td->first && td->activity) { - input_event(input, EV_ABS, ABS_X, td->lastx); - input_event(input, EV_ABS, ABS_Y, td->lasty); + input_event(input, EV_ABS, ABS_X, td->lastx >> 3); + input_event(input, EV_ABS, ABS_Y, td->lasty >> 3); + input_event(input, EV_ABS, ABS_PRESSURE, td->lastz); } if (!td->valid) { @@ -159,6 +165,13 @@ static int egalax_event(struct hid_device *hid, struct hid_field *field, { struct egalax_data *td = hid_get_drvdata(hid); + /* Note, eGalax has two product lines: the first is resistive and + * uses a standard parallel multitouch protocol (product ID == + * 48xx). The second is capacitive and uses an unusual "serial" + * protocol with a different message for each multitouch finger + * (product ID == 72xx). We do not yet generate a correct event + * sequence for the capacitive/serial protocol. + */ if (hid->claimed & HID_CLAIMED_INPUT) { struct input_dev *input = field->hidinput->input; @@ -246,6 +259,8 @@ static void egalax_remove(struct hid_device *hdev) static const struct hid_device_id egalax_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) }, + { HID_USB_DEVICE(USB_VENDOR_ID_DWAV, + USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) }, { } }; MODULE_DEVICE_TABLE(hid, egalax_devices); |