p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

HID: wacom: Move HID fix for AES serial number into wacom_hid_usage_quirk 

The 'wacom_hid_usage_quirk' function is the intended home for fixing
up descriptors that are buggy or that don't quite fit the mold. Commit
578325120e was supposed to move all of these quirks but it missed the
code to handle fixup the serial number usages for AES pens. Lets move
this code out of 'wacom_wac_pen_usage_mapping' where it was previously
lurking and put it into the same place as the others.

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
This commit is contained in:
Jason Gerecke 2019-01-24 11:09:44 -08:00 committed by Benjamin Tissoires
parent 787a3b4322
commit e9fe0d4921
2 changed files with 32 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/hid/wacom_sys.c
View File

@ -252,6 +252,38 @@ static void wacom_hid_usage_quirk(struct hid_device *hdev,
}
}
/*
* Wacom's AES devices use different vendor-defined usages to
* report serial number information compared to their branded
* hardware. The usages are also sometimes ill-defined and do
* not have the correct logical min/max values set. Lets patch
* the descriptor to use the branded usage convention and fix
* the errors.
*/
if (usage->hid == WACOM_HID_WT_SERIALNUMBER &&
field->report_size == 16 &&
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;
}
}
/* 2nd-generation Intuos Pro Large has incorrect Y maximum */
if (hdev->vendor == USB_VENDOR_ID_WACOM &&
hdev->product == 0x0358 &&

21
drivers/hid/wacom_wac.c
View File

@ -2159,27 +2159,6 @@ static void wacom_wac_pen_usage_mapping(struct hid_device *hdev,
case HID_DG_TOOLSERIALNUMBER:
features->quirks |= WACOM_QUIRK_TOOLSERIAL;
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;