From 6edb8cd87cca5dd4389d4ea2d84b66ea94341bbd Mon Sep 17 00:00:00 2001 From: Kerem Karabay Date: Fri, 5 Jul 2024 11:17:42 +0000 Subject: HID: core: add helper for finding a field with a certain usage This helper will allow HID drivers to easily determine if they should bind to a hid_device by checking for the prescence of a certain field when its ID is not enough, which can be the case on USB devices with multiple interfaces and/or configurations. Convert google-hammer driver to use it, and remove now superfluous hammer_has_usage(). [jkosina@suse.com: expand changelog with the information about google-hammer being added as user of this API ] Signed-off-by: Kerem Karabay Signed-off-by: Aditya Garg Signed-off-by: Jiri Kosina --- include/linux/hid.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index 1533c9dcd3a6..2deff79f39a1 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -940,6 +940,8 @@ extern void hidinput_report_event(struct hid_device *hid, struct hid_report *rep extern int hidinput_connect(struct hid_device *hid, unsigned int force); extern void hidinput_disconnect(struct hid_device *); +struct hid_field *hid_find_field(struct hid_device *hdev, unsigned int report_type, + unsigned int application, unsigned int usage); int hid_set_field(struct hid_field *, unsigned, __s32); int hid_input_report(struct hid_device *hid, enum hid_report_type type, u8 *data, u32 size, int interrupt); -- cgit v1.2.3