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HID: wacom: generic: Add support for height, tilt, and twist usages

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The HID standard defines usages that allow digitizers to report the pen's
height, tilt, and rotation and which are used by Wacom's new "MobileStudio
Pro" devices.

Note that 'hidinput_calc_abs_res' expects ABS_Z (historically used by our
driver to report twist) to have linear units. To ensure it calculates a
resolution with the actually-angular units provided in the HID descriptor
we nedd to lie and tell it we're calculating it for the (rotational) ABS_RZ
axis instead.

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Jason Gerecke
2016-10-19 18:03:42 -07:00
committed by Jiri Kosina
부모 f2209d4aef
커밋 50066a042d
2개의 변경된 파일과 29개의 추가작업 그리고 2개의 파일을 삭제
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28
drivers/hid/wacom_wac.c
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@@ -1440,6 +1440,11 @@ static void wacom_map_usage(struct input_dev *input, struct hid_usage *usage,
{
int fmin = field->logical_minimum;
int fmax = field->logical_maximum;
int resolution_code = code;
if (usage->hid == HID_DG_TWIST) {
resolution_code = ABS_RZ;
}
usage->type = type;
usage->code = code;
@@ -1450,7 +1455,7 @@ static void wacom_map_usage(struct input_dev *input, struct hid_usage *usage,
case EV_ABS:
input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
input_abs_set_res(input, code,
hidinput_calc_abs_res(field, code));
hidinput_calc_abs_res(field, resolution_code));
break;
case EV_KEY:
input_set_capability(input, EV_KEY, code);
@@ -1475,6 +1480,9 @@ static void wacom_wac_pen_usage_mapping(struct hid_device *hdev,
case HID_GD_Y:
wacom_map_usage(input, usage, field, EV_ABS, ABS_Y, 4);
break;
case HID_GD_Z:
wacom_map_usage(input, usage, field, EV_ABS, ABS_DISTANCE, 0);
break;
case HID_DG_TIPPRESSURE:
wacom_map_usage(input, usage, field, EV_ABS, ABS_PRESSURE, 0);
break;
@@ -1485,6 +1493,15 @@ static void wacom_wac_pen_usage_mapping(struct hid_device *hdev,
wacom_map_usage(input, usage, field, EV_KEY,
BTN_TOOL_RUBBER, 0);
break;
case HID_DG_TILT_X:
wacom_map_usage(input, usage, field, EV_ABS, ABS_TILT_X, 0);
break;
case HID_DG_TILT_Y:
wacom_map_usage(input, usage, field, EV_ABS, ABS_TILT_Y, 0);
break;
case HID_DG_TWIST:
wacom_map_usage(input, usage, field, EV_ABS, ABS_Z, 0);
break;
case HID_DG_ERASER:
case HID_DG_TIPSWITCH:
wacom_map_usage(input, usage, field, EV_KEY, BTN_TOUCH, 0);
@@ -1508,8 +1525,15 @@ static int wacom_wac_pen_event(struct hid_device *hdev, struct hid_field *field,
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
struct input_dev *input = wacom_wac->pen_input;
/* checking which Tool / tip switch to send */
switch (usage->hid) {
case HID_GD_Z:
/*
* HID_GD_Z "should increase as the control's position is
* moved from high to low", while ABS_DISTANCE instead
* increases in value as the tool moves from low to high.
*/
value = field->logical_maximum - value;
break;
case HID_DG_INRANGE:
wacom_wac->hid_data.inrange_state = value;
return 0;