hpen(4): Add support for legacy MS-compatible single touch protocol
It is used by many pre- and post- 2014 eGalax touchscreens. Tested by: Mark Kane <mark_AT_kane_DOT_mn> MFC after: 2 week
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@ -62,6 +62,8 @@ typedef int hidmap_cb_t(HIDMAP_CB_ARGS);
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/* These helpers can be used at any stage of any callbacks */
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#define HIDMAP_CB_GET_STATE(...) \
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((hm == NULL) ? HIDMAP_CB_IS_PROBING : hm->cb_state)
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#define HIDMAP_CB_GET_DEV(...) \
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(hm == NULL ? NULL : hm->dev)
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#define HIDMAP_CB_GET_SOFTC(...) \
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(hm == NULL ? NULL : device_get_softc(hm->dev))
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#define HIDMAP_CB_GET_EVDEV(...) \
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@ -72,44 +72,43 @@ static hidmap_cb_t hpen_final_pen_cb;
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HIDMAP_ABS_CB(HUP_DIGITIZERS, HUD_##usage, &cb)
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/* Generic map digitizer page map according to hut1_12v2.pdf */
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static const struct hidmap_item hpen_map_digi[] = {
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static const struct hidmap_item hpen_map_pen[] = {
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{ HPEN_MAP_ABS_GD(X, ABS_X), .required = true },
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{ HPEN_MAP_ABS_GD(Y, ABS_Y), .required = true },
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{ HPEN_MAP_ABS( TIP_PRESSURE, ABS_PRESSURE) },
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{ HPEN_MAP_ABS( X_TILT, ABS_TILT_X) },
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{ HPEN_MAP_ABS( Y_TILT, ABS_TILT_Y) },
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{ HPEN_MAP_ABS( CONTACTID, 0), .forbidden = true },
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{ HPEN_MAP_ABS( CONTACTCOUNT, 0), .forbidden = true },
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{ HPEN_MAP_ABS_CB(BATTERY_STRENGTH, hpen_battery_strenght_cb) },
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{ HPEN_MAP_BUT( TOUCH, BTN_TOUCH) },
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{ HPEN_MAP_BUT( TIP_SWITCH, BTN_TOUCH) },
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{ HPEN_MAP_BUT( SEC_TIP_SWITCH, BTN_TOUCH) },
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{ HPEN_MAP_BUT( IN_RANGE, BTN_TOOL_PEN) },
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{ HPEN_MAP_BUT( BARREL_SWITCH, BTN_STYLUS) },
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{ HPEN_MAP_BUT( INVERT, BTN_TOOL_RUBBER) },
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{ HPEN_MAP_BUT( ERASER, BTN_TOUCH) },
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{ HPEN_MAP_BUT( TABLET_PICK, BTN_STYLUS2) },
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{ HPEN_MAP_BUT( SEC_BARREL_SWITCH,BTN_STYLUS2) },
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{ HIDMAP_FINAL_CB( &hpen_final_digi_cb) },
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{ HIDMAP_FINAL_CB( &hpen_final_pen_cb) },
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};
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/* Microsoft-standardized pen support */
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static const struct hidmap_item hpen_map_pen[] = {
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{ HPEN_MAP_ABS_GD(X, ABS_X), .required = true },
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{ HPEN_MAP_ABS_GD(Y, ABS_Y), .required = true },
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{ HPEN_MAP_ABS( TIP_PRESSURE, ABS_PRESSURE), .required = true },
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{ HPEN_MAP_ABS( X_TILT, ABS_TILT_X) },
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{ HPEN_MAP_ABS( Y_TILT, ABS_TILT_Y) },
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{ HPEN_MAP_ABS_CB(BATTERY_STRENGTH, hpen_battery_strenght_cb) },
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{ HPEN_MAP_BUT( TIP_SWITCH, BTN_TOUCH), .required = true },
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{ HPEN_MAP_BUT( IN_RANGE, BTN_TOOL_PEN), .required = true },
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{ HPEN_MAP_BUT( BARREL_SWITCH, BTN_STYLUS) },
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{ HPEN_MAP_BUT( INVERT, BTN_TOOL_RUBBER), .required = true },
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{ HPEN_MAP_BUT( ERASER, BTN_TOUCH), .required = true },
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{ HIDMAP_FINAL_CB( &hpen_final_pen_cb) },
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static const struct hidmap_item hpen_map_stylus[] = {
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{ HPEN_MAP_BUT( IN_RANGE, BTN_TOOL_PEN) },
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};
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static const struct hidmap_item hpen_map_finger[] = {
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{ HPEN_MAP_BUT( IN_RANGE, BTN_TOOL_FINGER) },
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};
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static const struct hid_device_id hpen_devs[] = {
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{ HID_TLC(HUP_DIGITIZERS, HUD_DIGITIZER) },
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{ HID_TLC(HUP_DIGITIZERS, HUD_PEN) },
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{ HID_TLC(HUP_DIGITIZERS, HUD_TOUCHSCREEN),
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HID_BVP(BUS_USB, USB_VENDOR_EGALAX, USB_PRODUCT_EGALAX_TPANEL) },
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};
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/* Do not autoload legacy pen driver for all touchscreen */
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static const struct hid_device_id hpen_devs_no_load[] = {
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{ HID_TLC(HUP_DIGITIZERS, HUD_TOUCHSCREEN) },
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};
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static int
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@ -134,25 +133,18 @@ hpen_battery_strenght_cb(HIDMAP_CB_ARGS)
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return (0);
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}
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static int
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hpen_final_digi_cb(HIDMAP_CB_ARGS)
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{
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struct evdev_dev *evdev = HIDMAP_CB_GET_EVDEV();
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if (HIDMAP_CB_GET_STATE() == HIDMAP_CB_IS_ATTACHING)
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evdev_support_prop(evdev, INPUT_PROP_POINTER);
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/* Do not execute callback at interrupt handler and detach */
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return (ENOSYS);
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}
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static int
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hpen_final_pen_cb(HIDMAP_CB_ARGS)
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{
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struct evdev_dev *evdev = HIDMAP_CB_GET_EVDEV();
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if (HIDMAP_CB_GET_STATE() == HIDMAP_CB_IS_ATTACHING)
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if (HIDMAP_CB_GET_STATE() == HIDMAP_CB_IS_ATTACHING) {
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if (hidbus_get_usage(HIDMAP_CB_GET_DEV()) ==
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HID_USAGE2(HUP_DIGITIZERS, HUD_DIGITIZER))
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evdev_support_prop(evdev, INPUT_PROP_POINTER);
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else
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evdev_support_prop(evdev, INPUT_PROP_DIRECT);
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}
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/* Do not execute callback at interrupt handler and detach */
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return (ENOSYS);
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@ -185,24 +177,39 @@ static int
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hpen_probe(device_t dev)
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{
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struct hidmap *hm = device_get_softc(dev);
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const char *desc;
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void *d_ptr;
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hid_size_t d_len;
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int error;
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bool is_pen;
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if (HIDBUS_LOOKUP_DRIVER_INFO(dev, hpen_devs_no_load) != 0) {
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error = HIDBUS_LOOKUP_DRIVER_INFO(dev, hpen_devs);
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if (error != 0)
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return (error);
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}
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hidmap_set_dev(hm, dev);
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/* Check if report descriptor belongs to a HID tablet device */
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is_pen = hidbus_get_usage(dev) == HID_USAGE2(HUP_DIGITIZERS, HUD_PEN);
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error = is_pen
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? HIDMAP_ADD_MAP(hm, hpen_map_pen, NULL)
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: HIDMAP_ADD_MAP(hm, hpen_map_digi, NULL);
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/* Check if report descriptor belongs to a HID pen device */
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error = HIDMAP_ADD_MAP(hm, hpen_map_pen, NULL);
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if (error != 0)
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return (error);
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hidbus_set_desc(dev, is_pen ? "Pen" : "Digitizer");
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if (hid_get_report_descr(dev, &d_ptr, &d_len) != 0)
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return (ENXIO);
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if (hidbus_is_collection(d_ptr, d_len,
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HID_USAGE2(HUP_DIGITIZERS, HUD_FINGER), hidbus_get_index(dev))) {
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HIDMAP_ADD_MAP(hm, hpen_map_finger, NULL);
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desc = "TouchScreen";
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} else {
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HIDMAP_ADD_MAP(hm, hpen_map_stylus, NULL);
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desc = "Pen";
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}
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if (hidbus_get_usage(dev) == HID_USAGE2(HUP_DIGITIZERS, HUD_DIGITIZER))
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desc = "Digitizer";
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hidbus_set_desc(dev, desc);
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return (BUS_PROBE_DEFAULT);
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}
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