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HID: wacom: Properly handle AES serial number and tool type 

Current AES sensors relay tool type and serial number information with
a different set of usages than those prescribed by the modern (i.e.
MobileStudio Pro and newer) EMR tablet standard. To ensure the driver
properly understands these usages, we modify them to be compatible.
The identifying information is split across three consecutive fields:
a 16-bit WACOM_HID_WT_SERIALNUMBER (which is more accurately described
as WACOM_HID_WD_TOOLTYPE), a 32-bit HID_DG_TOOLSERIALNUMBER, and an
8-bit 0xFF000000 (which should be WACOM_HID_WD_SERIALHI). While we're
at it, we also define proper min/max values since may may be undefined
on some devices.

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 2017-11-10 11:50:00 -08:00 committed by Jiri Kosina
parent 20df15783a
commit 99acedadde
2 changed files with 36 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/hid/wacom_wac.c
View File

@ -2086,6 +2086,27 @@ static void wacom_wac_pen_usage_mapping(struct hid_device *hdev,
break;
case HID_DG_TOOLSERIALNUMBER:
wacom_map_usage(input, usage, field, EV_MSC, MSC_SERIAL, 0);
/* Adjust AES usages to match modern convention */
if (usage->hid == WACOM_HID_WT_SERIALNUMBER && field->report_size == 16) {
if (field->index + 2 < field->report->maxfield) {
struct hid_field *a = field->report->field[field->index + 1];
struct hid_field *b = field->report->field[field->index + 2];
if (a->maxusage > 0 && a->usage[0].hid == HID_DG_TOOLSERIALNUMBER && a->report_size == 32 &&
b->maxusage > 0 && b->usage[0].hid == 0xFF000000 && b->report_size == 8) {
features->quirks |= WACOM_QUIRK_AESPEN;
usage->hid = WACOM_HID_WD_TOOLTYPE;
field->logical_minimum = S16_MIN;
field->logical_maximum = S16_MAX;
a->logical_minimum = S32_MIN;
a->logical_maximum = S32_MAX;
b->usage[0].hid = WACOM_HID_WD_SERIALHI;
b->logical_minimum = 0;
b->logical_maximum = U8_MAX;
}
}
}
break;
case WACOM_HID_WD_SENSE:
features->quirks |= WACOM_QUIRK_SENSE;
@ -2093,15 +2114,18 @@ static void wacom_wac_pen_usage_mapping(struct hid_device *hdev,
break;
case WACOM_HID_WD_SERIALHI:
wacom_map_usage(input, usage, field, EV_ABS, ABS_MISC, 0);
set_bit(EV_KEY, input->evbit);
input_set_capability(input, EV_KEY, BTN_TOOL_PEN);
input_set_capability(input, EV_KEY, BTN_TOOL_RUBBER);
input_set_capability(input, EV_KEY, BTN_TOOL_BRUSH);
input_set_capability(input, EV_KEY, BTN_TOOL_PENCIL);
input_set_capability(input, EV_KEY, BTN_TOOL_AIRBRUSH);
if (!(features->device_type & WACOM_DEVICETYPE_DIRECT)) {
input_set_capability(input, EV_KEY, BTN_TOOL_MOUSE);
input_set_capability(input, EV_KEY, BTN_TOOL_LENS);
if (!(features->quirks & WACOM_QUIRK_AESPEN)) {
set_bit(EV_KEY, input->evbit);
input_set_capability(input, EV_KEY, BTN_TOOL_PEN);
input_set_capability(input, EV_KEY, BTN_TOOL_RUBBER);
input_set_capability(input, EV_KEY, BTN_TOOL_BRUSH);
input_set_capability(input, EV_KEY, BTN_TOOL_PENCIL);
input_set_capability(input, EV_KEY, BTN_TOOL_AIRBRUSH);
if (!(features->device_type & WACOM_DEVICETYPE_DIRECT)) {
input_set_capability(input, EV_KEY, BTN_TOOL_MOUSE);
input_set_capability(input, EV_KEY, BTN_TOOL_LENS);
}
}
break;
case WACOM_HID_WD_FINGERWHEEL:

3
drivers/hid/wacom_wac.h
View File

@ -86,6 +86,7 @@
/* device quirks */
#define WACOM_QUIRK_BBTOUCH_LOWRES 0x0001
#define WACOM_QUIRK_SENSE 0x0002
#define WACOM_QUIRK_AESPEN 0x0004
#define WACOM_QUIRK_BATTERY 0x0008
/* device types */
@ -107,6 +108,7 @@
#define WACOM_HID_WD_PEN (WACOM_HID_UP_WACOMDIGITIZER | 0x02)
#define WACOM_HID_WD_SENSE (WACOM_HID_UP_WACOMDIGITIZER | 0x36)
#define WACOM_HID_WD_DIGITIZERFNKEYS (WACOM_HID_UP_WACOMDIGITIZER | 0x39)
#define WACOM_HID_WD_SERIALNUMBER (WACOM_HID_UP_WACOMDIGITIZER | 0x5b)
#define WACOM_HID_WD_SERIALHI (WACOM_HID_UP_WACOMDIGITIZER | 0x5c)
#define WACOM_HID_WD_TOOLTYPE (WACOM_HID_UP_WACOMDIGITIZER | 0x77)
#define WACOM_HID_WD_DISTANCE (WACOM_HID_UP_WACOMDIGITIZER | 0x0132)
@ -150,6 +152,7 @@
#define WACOM_HID_WT_TOUCHSCREEN (WACOM_HID_UP_WACOMTOUCH | 0x04)
#define WACOM_HID_WT_TOUCHPAD (WACOM_HID_UP_WACOMTOUCH | 0x05)
#define WACOM_HID_WT_CONTACTMAX (WACOM_HID_UP_WACOMTOUCH | 0x55)
#define WACOM_HID_WT_SERIALNUMBER (WACOM_HID_UP_WACOMTOUCH | 0x5b)
#define WACOM_HID_WT_X (WACOM_HID_UP_WACOMTOUCH | 0x130)
#define WACOM_HID_WT_Y (WACOM_HID_UP_WACOMTOUCH | 0x131)