HID: wacom: implement the finger part of the HID generic handling
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Jason Gerecke <killertofu@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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@ -109,6 +109,7 @@ static void wacom_feature_mapping(struct hid_device *hdev,
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{
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struct wacom *wacom = hid_get_drvdata(hdev);
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struct wacom_features *features = &wacom->wacom_wac.features;
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struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
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u8 *data;
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int ret;
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@ -128,6 +129,16 @@ static void wacom_feature_mapping(struct hid_device *hdev,
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kfree(data);
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}
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break;
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case HID_DG_INPUTMODE:
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/* Ignore if value index is out of bounds. */
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if (usage->usage_index >= field->report_count) {
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dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
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break;
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}
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hid_data->inputmode = field->report->id;
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hid_data->inputmode_index = usage->usage_index;
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break;
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}
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}
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@ -255,6 +266,25 @@ static void wacom_parse_hid(struct hid_device *hdev,
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}
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}
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static int wacom_hid_set_device_mode(struct hid_device *hdev)
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{
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struct wacom *wacom = hid_get_drvdata(hdev);
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struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
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struct hid_report *r;
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struct hid_report_enum *re;
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if (hid_data->inputmode < 0)
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return 0;
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re = &(hdev->report_enum[HID_FEATURE_REPORT]);
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r = re->report_id_hash[hid_data->inputmode];
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if (r) {
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r->field[0]->value[hid_data->inputmode_index] = 2;
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hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
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}
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return 0;
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}
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static int wacom_set_device_mode(struct hid_device *hdev, int report_id,
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int length, int mode)
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{
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@ -347,6 +377,9 @@ static int wacom_query_tablet_data(struct hid_device *hdev,
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if (hdev->bus == BUS_BLUETOOTH)
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return wacom_bt_query_tablet_data(hdev, 1, features);
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if (features->type == HID_GENERIC)
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return wacom_hid_set_device_mode(hdev);
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if (features->device_type == BTN_TOOL_FINGER) {
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if (features->type > TABLETPC) {
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/* MT Tablet PC touch */
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@ -1451,9 +1484,6 @@ static int wacom_probe(struct hid_device *hdev,
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error);
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}
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/* Note that if query fails it is not a hard failure */
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wacom_query_tablet_data(hdev, features);
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if (features->type == HID_GENERIC)
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connect_mask |= HID_CONNECT_DRIVER;
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@ -1464,6 +1494,9 @@ static int wacom_probe(struct hid_device *hdev,
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goto fail_hw_start;
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}
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/* Note that if query fails it is not a hard failure */
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wacom_query_tablet_data(hdev, features);
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if (features->quirks & WACOM_QUIRK_MONITOR)
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error = hid_hw_open(hdev);
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@ -1372,6 +1372,117 @@ static void wacom_wac_pen_report(struct hid_device *hdev,
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}
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}
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static void wacom_wac_finger_usage_mapping(struct hid_device *hdev,
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struct hid_field *field, struct hid_usage *usage)
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{
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struct wacom *wacom = hid_get_drvdata(hdev);
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struct wacom_wac *wacom_wac = &wacom->wacom_wac;
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struct input_dev *input = wacom_wac->input;
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unsigned touch_max = wacom_wac->features.touch_max;
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switch (usage->hid) {
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case HID_GD_X:
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if (touch_max == 1)
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wacom_map_usage(wacom, usage, field, EV_ABS, ABS_X, 4);
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else
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wacom_map_usage(wacom, usage, field, EV_ABS,
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ABS_MT_POSITION_X, 4);
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break;
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case HID_GD_Y:
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if (touch_max == 1)
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wacom_map_usage(wacom, usage, field, EV_ABS, ABS_Y, 4);
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else
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wacom_map_usage(wacom, usage, field, EV_ABS,
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ABS_MT_POSITION_Y, 4);
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break;
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case HID_DG_CONTACTID:
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input_mt_init_slots(input, wacom_wac->features.touch_max,
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INPUT_MT_DIRECT);
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break;
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case HID_DG_INRANGE:
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break;
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case HID_DG_INVERT:
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break;
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case HID_DG_TIPSWITCH:
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wacom_map_usage(wacom, usage, field, EV_KEY, BTN_TOUCH, 0);
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break;
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}
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}
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static int wacom_wac_finger_event(struct hid_device *hdev,
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struct hid_field *field, struct hid_usage *usage, __s32 value)
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{
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struct wacom *wacom = hid_get_drvdata(hdev);
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struct wacom_wac *wacom_wac = &wacom->wacom_wac;
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switch (usage->hid) {
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case HID_GD_X:
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wacom_wac->hid_data.x = value;
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break;
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case HID_GD_Y:
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wacom_wac->hid_data.y = value;
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break;
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case HID_DG_CONTACTID:
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wacom_wac->hid_data.id = value;
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break;
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case HID_DG_TIPSWITCH:
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wacom_wac->hid_data.tipswitch = value;
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break;
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}
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return 0;
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}
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static void wacom_wac_finger_mt_report(struct wacom_wac *wacom_wac,
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struct input_dev *input, bool touch)
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{
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int slot;
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struct hid_data *hid_data = &wacom_wac->hid_data;
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slot = input_mt_get_slot_by_key(input, hid_data->id);
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input_mt_slot(input, slot);
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input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
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if (touch) {
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input_report_abs(input, ABS_MT_POSITION_X, hid_data->x);
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input_report_abs(input, ABS_MT_POSITION_Y, hid_data->y);
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}
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input_mt_sync_frame(input);
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}
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static void wacom_wac_finger_single_touch_report(struct wacom_wac *wacom_wac,
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struct input_dev *input, bool touch)
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{
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struct hid_data *hid_data = &wacom_wac->hid_data;
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if (touch) {
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input_report_abs(input, ABS_X, hid_data->x);
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input_report_abs(input, ABS_Y, hid_data->y);
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}
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input_report_key(input, BTN_TOUCH, touch);
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}
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static void wacom_wac_finger_report(struct hid_device *hdev,
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struct hid_report *report)
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{
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struct wacom *wacom = hid_get_drvdata(hdev);
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struct wacom_wac *wacom_wac = &wacom->wacom_wac;
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struct input_dev *input = wacom_wac->input;
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bool touch = wacom_wac->hid_data.tipswitch &&
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!wacom_wac->shared->stylus_in_proximity;
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unsigned touch_max = wacom_wac->features.touch_max;
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if (touch_max > 1)
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wacom_wac_finger_mt_report(wacom_wac, input, touch);
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else
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wacom_wac_finger_single_touch_report(wacom_wac, input, touch);
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input_sync(input);
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/* keep touch state for pen event */
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wacom_wac->shared->touch_down = touch;
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}
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#define WACOM_PEN_FIELD(f) (((f)->logical == HID_DG_STYLUS) || \
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((f)->physical == HID_DG_STYLUS))
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#define WACOM_FINGER_FIELD(f) (((f)->logical == HID_DG_FINGER) || \
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@ -1389,6 +1500,9 @@ void wacom_wac_usage_mapping(struct hid_device *hdev,
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if (WACOM_PEN_FIELD(field))
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return wacom_wac_pen_usage_mapping(hdev, field, usage);
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if (WACOM_FINGER_FIELD(field))
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return wacom_wac_finger_usage_mapping(hdev, field, usage);
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}
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int wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
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@ -1402,6 +1516,9 @@ int wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
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if (WACOM_PEN_FIELD(field))
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return wacom_wac_pen_event(hdev, field, usage, value);
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if (WACOM_FINGER_FIELD(field))
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return wacom_wac_finger_event(hdev, field, usage, value);
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return 0;
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}
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@ -1416,6 +1533,9 @@ void wacom_wac_report(struct hid_device *hdev, struct hid_report *report)
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if (WACOM_PEN_FIELD(field))
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return wacom_wac_pen_report(hdev, report);
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if (WACOM_FINGER_FIELD(field))
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return wacom_wac_finger_report(hdev, report);
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}
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static int wacom_bpt_touch(struct wacom_wac *wacom)
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@ -156,9 +156,17 @@ struct wacom_shared {
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};
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struct hid_data {
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__s16 inputmode; /* InputMode HID feature, -1 if non-existent */
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__s16 inputmode_index; /* InputMode HID feature index in the report */
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bool inrange_state;
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bool invert_state;
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bool tipswitch;
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int x;
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int y;
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int pressure;
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int width;
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int height;
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int id;
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};
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struct wacom_wac {
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