d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

hidbus(4): Add routine to check presence of collection of given usage

Browse Source 
MFC after:	2 week
This commit is contained in:
Vladimir Kondratyev 2021-09-02 22:32:57 +03:00
parent bbed4b41c9
commit d51e437669
2 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
sys/dev/hid/hidbus.c
View File

@ -172,6 +172,25 @@ hidbus_locate(const void *desc, hid_size_t size, int32_t u, enum hid_kind k,
return (0);
}
bool
hidbus_is_collection(const void *desc, hid_size_t size, int32_t usage,
uint8_t tlc_index)
{
struct hid_data *d;
struct hid_item h;
bool ret = false;
d = hid_start_parse(desc, size, 0);
HIDBUS_FOREACH_ITEM(d, &h, tlc_index) {
if (h.kind == hid_collection && h.usage == usage) {
ret = true;
break;
}
}
hid_end_parse(d);
return (ret);
}
static device_t
hidbus_add_child(device_t dev, u_int order, const char *name, int unit)
{

1
sys/dev/hid/hidbus.h
View File

@ -152,6 +152,7 @@ int hidbus_locate(const void *desc, hid_size_t size, int32_t u,
enum hid_kind k, uint8_t tlc_index, uint8_t index,
struct hid_location *loc, uint32_t *flags, uint8_t *id,
struct hid_absinfo *ai);
bool hidbus_is_collection(const void *, hid_size_t, int32_t, uint8_t);
const struct hid_device_id *hidbus_lookup_id(device_t,
const struct hid_device_id *, int);