HID: Extend the interface with report requests

Some drivers send reports directly to underlying device, creating an
unwanted dependency on the underlying transport layer. This patch adds
hid_hw_request() to the interface, thereby removing usbhid from the
lion share of the drivers.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 8e0c4bf94ebc..366fd09d257d 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -1243,6 +1243,18 @@ static int usbhid_power(struct hid_device *hid, int lvl)
         return r;
 }
 
+static void usbhid_request(struct hid_device *hid, struct hid_report *rep, int reqtype)
+{
+        switch (reqtype) {
+        case HID_REQ_GET_REPORT:
+                usbhid_submit_report(hid, rep, USB_DIR_IN);
+                break;
+        case HID_REQ_SET_REPORT:
+                usbhid_submit_report(hid, rep, USB_DIR_OUT);
+                break;
+        }
+}
+
 static struct hid_ll_driver usb_hid_driver = {
         .parse = usbhid_parse,
         .start = usbhid_start,
@@ -1251,6 +1263,7 @@ static struct hid_ll_driver usb_hid_driver = {
         .close = usbhid_close,
         .power = usbhid_power,
         .hidinput_input_event = usb_hidinput_input_event,
+        .request = usbhid_request,
 };
 
 static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *id)