HID: add inliners for ll_driver transport-layer callbacks

Those callbacks are not mandatory, so it's better to add inliners
to use them safely.

Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/include/linux/hid.h b/include/linux/hid.h
index 003cc8e898317f3084bfcb888d6123fa55756c3e..dddcad07c2d9613513300aaa5fb88613c7519049 100644 (file)
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -680,6 +680,8 @@ struct hid_driver {
  *        shouldn't allocate anything to not leak memory
  * @request: send report request to device (e.g. feature report)
  * @wait: wait for buffered io to complete (send/recv reports)
+ * @raw_request: send raw report request to device (e.g. feature report)
+ * @output_report: send output report to device
  * @idle: send idle request to device
  */
 struct hid_ll_driver {
@@ -973,6 +975,49 @@ static inline void hid_hw_request(struct hid_device *hdev,
                hdev->ll_driver->request(hdev, report, reqtype);
 }
 
+/**
+ * hid_hw_raw_request - send report request to device
+ *
+ * @hdev: hid device
+ * @reportnum: report ID
+ * @buf: in/out data to transfer
+ * @len: length of buf
+ * @rtype: HID report type
+ * @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT
+ *
+ * @return: count of data transfered, negative if error
+ *
+ * Same behavior as hid_hw_request, but with raw buffers instead.
+ */
+static inline int hid_hw_raw_request(struct hid_device *hdev,
+                                 unsigned char reportnum, __u8 *buf,
+                                 size_t len, unsigned char rtype, int reqtype)
+{
+       if (hdev->ll_driver->raw_request)
+               return hdev->ll_driver->raw_request(hdev, reportnum, buf, len,
+                                                   rtype, reqtype);
+
+       return -ENOSYS;
+}
+
+/**
+ * hid_hw_output_report - send output report to device
+ *
+ * @hdev: hid device
+ * @buf: raw data to transfer
+ * @len: length of buf
+ *
+ * @return: count of data transfered, negative if error
+ */
+static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf,
+                                       size_t len)
+{
+       if (hdev->ll_driver->output_report)
+               return hdev->ll_driver->output_report(hdev, buf, len);
+
+       return -ENOSYS;
+}
+
 /**
  * hid_hw_idle - send idle request to device
  *