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authorDavid Herrmann <dh.herrmann@gmail.com>2014-07-29 19:14:24 +0400
committerJiri Kosina <jkosina@suse.cz>2014-08-25 12:28:08 +0400
commit11c221553080408b203a00b91ad5f647dfb218d1 (patch)
treeba4aa924ec09d7775ba887fbdaeaee45cff191b0 /include/uapi/linux/uhid.h
parent7c4003bc367d5ff1cbce579a883f17698a9a6da2 (diff)
downloadlinux-11c221553080408b203a00b91ad5f647dfb218d1.tar.xz
HID: uhid: implement SET_REPORT
We so far lacked support for hid_hw_raw_request(..., HID_REQ_SET_REPORT); Add support for it and simply forward the request to user-space. Note that SET_REPORT is synchronous, just like GET_REPORT, even though it does not provide any data back besides an error code. If a transport layer does SET_REPORT asynchronously, they can just ACK it immediately by writing an uhid_set_report_reply to uhid. This patch re-uses the synchronous uhid-report infrastructure to query user-space. Note that this means you cannot run SET_REPORT and GET_REPORT in parallel. However, that has always been a restriction of HID and due to its blocking nature, this is just fine. Maybe some future transport layer supports parallel requests (very unlikely), however, until then lets not over-complicate things and avoid request-lookup-tables. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'include/uapi/linux/uhid.h')
-rw-r--r--include/uapi/linux/uhid.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/uapi/linux/uhid.h b/include/uapi/linux/uhid.h
index 116536eeae62..62aac0e4edf3 100644
--- a/include/uapi/linux/uhid.h
+++ b/include/uapi/linux/uhid.h
@@ -37,6 +37,8 @@ enum uhid_event_type {
UHID_GET_REPORT_REPLY,
UHID_CREATE2,
UHID_INPUT2,
+ UHID_SET_REPORT,
+ UHID_SET_REPORT_REPLY,
};
struct uhid_create2_req {
@@ -84,6 +86,19 @@ struct uhid_get_report_reply_req {
__u8 data[UHID_DATA_MAX];
} __attribute__((__packed__));
+struct uhid_set_report_req {
+ __u32 id;
+ __u8 rnum;
+ __u8 rtype;
+ __u16 size;
+ __u8 data[UHID_DATA_MAX];
+} __attribute__((__packed__));
+
+struct uhid_set_report_reply_req {
+ __u32 id;
+ __u16 err;
+} __attribute__((__packed__));
+
/*
* Compat Layer
* All these commands and requests are obsolete. You should avoid using them in
@@ -165,6 +180,8 @@ struct uhid_event {
struct uhid_get_report_reply_req get_report_reply;
struct uhid_create2_req create2;
struct uhid_input2_req input2;
+ struct uhid_set_report_req set_report;
+ struct uhid_set_report_reply_req set_report_reply;
} u;
} __attribute__((__packed__));