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author | Petri Gynther | 2014-03-24 21:50:01 +0100 |
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committer | Jiri Kosina | 2014-04-01 18:27:33 +0200 |
commit | 4522643aa9630be17238edf1b4c0b690c5dd7f5d (patch) | |
tree | 4476b31d4cab4643baeaf0877e21da51f69c7ad2 /drivers/hid/hid-multitouch.c | |
parent | HID: hyperv: fix _raw_request() prototype (diff) | |
download | kernel-qcow2-linux-4522643aa9630be17238edf1b4c0b690c5dd7f5d.tar.gz kernel-qcow2-linux-4522643aa9630be17238edf1b4c0b690c5dd7f5d.tar.xz kernel-qcow2-linux-4522643aa9630be17238edf1b4c0b690c5dd7f5d.zip |
HID: uhid: Add UHID_CREATE2 + UHID_INPUT2
UHID_CREATE2:
HID report descriptor data (rd_data) is an array in struct uhid_create2_req,
instead of a pointer. Enables use from languages that don't support pointers,
e.g. Python.
UHID_INPUT2:
Data array is the last field of struct uhid_input2_req. Enables userspace to
write only the required bytes to kernel (ev.type + ev.u.input2.size + the part
of the data array that matters), instead of the entire struct uhid_input2_req.
Note:
UHID_CREATE2 increases the total size of struct uhid_event slightly, thus
increasing the size of messages that are queued for userspace. However, this
won't affect the userspace processing of these events.
[Jiri Kosina <jkosina@suse.cz>: adjust to hid_get_raw_report() and
hid_output_raw_report() API changes]
Signed-off-by: Petri Gynther <pgynther@google.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-multitouch.c')
0 files changed, 0 insertions, 0 deletions