On some laptops that have a Windows Precision Touchpad (imt) but
also have a trackstick, imt was claiming all report ids of the
ihidev device preventing the trackstick from attaching as a separate
mouse (ims) device. (This probably doesn't affect Thinkpads because
their trackstick attaches as a legacy pms device.)
Also, some touchpads don't have the "maximum number of contacts" or
"button type" usages, so we can use some reasonable defaults here
rather than failing to attach.
I have confirmation that these fix the touchpad and trackstick on
one Dell laptop and I'd like more testing to make sure they don't
break other laptops.
diff --git sys/dev/hid/hidmt.c sys/dev/hid/hidmt.c
index 532da1b6627..8033c9cf446 100644
--- sys/dev/hid/hidmt.c
+++ sys/dev/hid/hidmt.c
@@ -138,31 +138,29 @@ hidmt_setup(struct device *self, struct hidmt *mt, void
*desc, int dlen)
}
/* find maximum number of contacts being reported per input report */
- if (!hid_locate(desc, dlen, HID_USAGE2(HUP_DIGITIZERS, HUD_CONTACT_MAX),
+ mt->sc_num_contacts = HIDMT_MAX_CONTACTS;
+ if (hid_locate(desc, dlen, HID_USAGE2(HUP_DIGITIZERS, HUD_CONTACT_MAX),
mt->sc_rep_cap, hid_feature, &cap, NULL)) {
- printf("\n%s: can't find maximum contacts\n", self->dv_xname);
- return 1;
- }
-
- d = hid_get_udata(rep, capsize, &cap);
- if (d > HIDMT_MAX_CONTACTS) {
- printf("\n%s: contacts %d > max %d\n", self->dv_xname, d,
- HIDMT_MAX_CONTACTS);
- return 1;
+ d = hid_get_udata(rep, capsize, &cap);
+ if (d > HIDMT_MAX_CONTACTS)
+ printf("\n%s: contacts %d > max %d\n", self->dv_xname,
+ d, HIDMT_MAX_CONTACTS);
+ else
+ mt->sc_num_contacts = d;
}
- else
- mt->sc_num_contacts = d;
/* find whether this is a clickpad or not */
- if (!hid_locate(desc, dlen, HID_USAGE2(HUP_DIGITIZERS, HUD_BUTTON_TYPE),
+ if (hid_locate(desc, dlen, HID_USAGE2(HUP_DIGITIZERS, HUD_BUTTON_TYPE),
mt->sc_rep_cap, hid_feature, &cap, NULL)) {
- printf("\n%s: can't find button type\n", self->dv_xname);
- return 1;
+ d = hid_get_udata(rep, capsize, &cap);
+ mt->sc_clickpad = (d == 0);
+ } else {
+ /* if there's not a 2nd button, this is probably a clickpad */
+ if (!hid_locate(desc, dlen, HID_USAGE2(HUP_BUTTON, 2),
+ mt->sc_rep_input, hid_input, &cap, NULL))
+ mt->sc_clickpad = 1;
}
- d = hid_get_udata(rep, capsize, &cap);
- mt->sc_clickpad = (d == 0);
-
/*
* Walk HID descriptor and store usages we care about to know what to
* pluck out of input reports.
diff --git sys/dev/i2c/ihidev.c sys/dev/i2c/ihidev.c
index 4c63eb5bae2..789a2300a3f 100644
--- sys/dev/i2c/ihidev.c
+++ sys/dev/i2c/ihidev.c
@@ -173,17 +173,22 @@ ihidev_attach(struct device *parent, struct device *self,
void *aux)
iha.iaa = ia;
iha.parent = sc;
- /* Look for a driver claiming all report IDs first. */
- iha.reportid = IHIDEV_CLAIM_ALLREPORTID;
+ /* Look for a driver claiming multiple report IDs first. */
+ iha.reportid = IHIDEV_CLAIM_MULTIPLEID;
+ iha.nclaims = 0;
dev = config_found_sm((struct device *)sc, &iha, NULL,
ihidev_submatch);
if (dev != NULL) {
- for (repid = 0; repid < sc->sc_nrepid; repid++)
- sc->sc_subdevs[repid] = (struct ihidev *)dev;
- return;
+ for (repid = 0; repid < iha.nclaims; repid++) {
+ sc->sc_subdevs[iha.claims[repid]] =
+ (struct ihidev *)dev;
+ }
}
for (repid = 0; repid < sc->sc_nrepid; repid++) {
+ if (sc->sc_subdevs[repid] != NULL)
+ continue;
+
if (hid_report_size(sc->sc_report, sc->sc_reportlen, hid_input,
repid) == 0 &&
hid_report_size(sc->sc_report, sc->sc_reportlen,
@@ -748,7 +753,7 @@ ihidev_print(void *aux, const char *pnp)
if (pnp)
printf("hid at %s", pnp);
- if (iha->reportid != 0 && iha->reportid != IHIDEV_CLAIM_ALLREPORTID)
+ if (iha->reportid != 0)
printf(" reportid %d", iha->reportid);
return (UNCONF);
diff --git sys/dev/i2c/ihidev.h sys/dev/i2c/ihidev.h
index dde7cef5ab5..ad1f7ce83b8 100644
--- sys/dev/i2c/ihidev.h
+++ sys/dev/i2c/ihidev.h
@@ -112,7 +112,9 @@ struct ihidev_attach_arg {
struct i2c_attach_args *iaa;
struct ihidev_softc *parent;
uint8_t reportid;
-#define IHIDEV_CLAIM_ALLREPORTID 255
+ uint8_t claims[16];
+ uint8_t nclaims;
+#define IHIDEV_CLAIM_MULTIPLEID 255
};
struct i2c_hid_report_request {
diff --git sys/dev/i2c/imt.c sys/dev/i2c/imt.c
index 38169837338..5a699921498 100644
--- sys/dev/i2c/imt.c
+++ sys/dev/i2c/imt.c
@@ -3,7 +3,7 @@
* HID-over-i2c multitouch trackpad driver for devices conforming to
* Windows Precision Touchpad standard
*
- *
https://msdn.microsoft.com/en-us/library/windows/hardware/dn467314%28v=vs.85%29.aspx
+ *
https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/windows-precision-touchpad-required-hid-top-level-collections
*
* Copyright (c) 2016 joshua stein <[email protected]>
*
@@ -79,13 +79,19 @@ int
imt_match(struct device *parent, void *match, void *aux)
{
struct ihidev_attach_arg *iha = (struct ihidev_attach_arg *)aux;
+ struct imt_softc sc;
int size;
void *desc;
- if (iha->reportid == IHIDEV_CLAIM_ALLREPORTID) {
+ if (iha->reportid == IHIDEV_CLAIM_MULTIPLEID) {
ihidev_get_report_desc(iha->parent, &desc, &size);
- if (imt_find_winptp_reports(iha->parent, desc, size, NULL))
+ if (imt_find_winptp_reports(iha->parent, desc, size, &sc)) {
+ iha->claims[0] = sc.sc_rep_input;
+ iha->claims[1] = sc.sc_rep_config;
+ iha->claims[2] = sc.sc_rep_cap;
+ iha->nclaims = 3;
return (IMATCH_DEVCLASS_DEVSUBCLASS);
+ }
}
return (IMATCH_NONE);
