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>
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@ -112,6 +112,24 @@ static void uhid_hid_close(struct hid_device *hid)
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static int uhid_hid_input(struct input_dev *input, unsigned int type,
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static int uhid_hid_input(struct input_dev *input, unsigned int type,
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unsigned int code, int value)
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unsigned int code, int value)
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{
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{
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struct hid_device *hid = input_get_drvdata(input);
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struct uhid_device *uhid = hid->driver_data;
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unsigned long flags;
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struct uhid_event *ev;
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ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
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if (!ev)
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return -ENOMEM;
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ev->type = UHID_OUTPUT_EV;
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ev->u.output_ev.type = type;
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ev->u.output_ev.code = code;
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ev->u.output_ev.value = value;
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spin_lock_irqsave(&uhid->qlock, flags);
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uhid_queue(uhid, ev);
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spin_unlock_irqrestore(&uhid->qlock, flags);
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return 0;
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return 0;
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}
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}
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@ -29,6 +29,7 @@ enum uhid_event_type {
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UHID_STOP,
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UHID_STOP,
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UHID_OPEN,
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UHID_OPEN,
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UHID_CLOSE,
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UHID_CLOSE,
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UHID_OUTPUT_EV,
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UHID_INPUT,
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UHID_INPUT,
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};
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};
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@ -53,12 +54,19 @@ struct uhid_input_req {
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__u16 size;
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__u16 size;
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} __attribute__((__packed__));
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} __attribute__((__packed__));
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struct uhid_output_ev_req {
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__u16 type;
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__u16 code;
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__s32 value;
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} __attribute__((__packed__));
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struct uhid_event {
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struct uhid_event {
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__u32 type;
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__u32 type;
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union {
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union {
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struct uhid_create_req create;
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struct uhid_create_req create;
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struct uhid_input_req input;
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struct uhid_input_req input;
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struct uhid_output_ev_req output_ev;
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} u;
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} u;
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} __attribute__((__packed__));
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} __attribute__((__packed__));
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