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| author | David Herrmann <dh.herrmann@googlemail.com> | 2012-06-10 15:16:23 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2012-06-18 13:42:02 +0200 |
| commit | f80e13601c51a836b2aac583b8a3b4327c0c27ce (patch) | |
| tree | e8aec7e0ce0523153a53404cb97454b74c702dc1 /drivers/hid | |
| parent | e7191474a5459e6ba7039fadca6a32f3a5731909 (diff) | |
| download | linux-f80e13601c51a836b2aac583b8a3b4327c0c27ce.tar.gz linux-f80e13601c51a836b2aac583b8a3b4327c0c27ce.tar.bz2 linux-f80e13601c51a836b2aac583b8a3b4327c0c27ce.zip | |
HID: uhid: forward output request to user-space
If the hid-driver wants to send standardized data to the device it uses a
linux input_event. We forward this to the user-space transport-level
driver so they can perform the requested action on the device.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/uhid.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c index 0226ba3f5307..4dd693e1c8b8 100644 --- a/drivers/hid/uhid.c +++ b/drivers/hid/uhid.c @@ -112,6 +112,24 @@ static void uhid_hid_close(struct hid_device *hid) static int uhid_hid_input(struct input_dev *input, unsigned int type, unsigned int code, int value) { + struct hid_device *hid = input_get_drvdata(input); + struct uhid_device *uhid = hid->driver_data; + unsigned long flags; + struct uhid_event *ev; + + ev = kzalloc(sizeof(*ev), GFP_ATOMIC); + if (!ev) + return -ENOMEM; + + ev->type = UHID_OUTPUT_EV; + ev->u.output_ev.type = type; + ev->u.output_ev.code = code; + ev->u.output_ev.value = value; + + spin_lock_irqsave(&uhid->qlock, flags); + uhid_queue(uhid, ev); + spin_unlock_irqrestore(&uhid->qlock, flags); + return 0; } |