Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / hid / hid-xinmo.c

diff --git a/kernel/drivers/hid/hid-xinmo.c b/kernel/drivers/hid/hid-xinmo.c
new file mode 100644 (file)
index 0000000..7df5227
--- /dev/null
+++ b/kernel/drivers/hid/hid-xinmo.c
@@ -0,0 +1,61 @@
+/*
+ *  HID driver for Xin-Mo devices, currently only the Dual Arcade controller.
+ *  Fixes the negative axis event values (the devices sends -2) to match the
+ *  logical axis minimum of the HID report descriptor (the report announces
+ *  -1). It is needed because hid-input discards out of bounds values.
+ *  (This module is based on "hid-saitek" and "hid-lg".)
+ *
+ *  Copyright (c) 2013 Olivier Scherler
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+
+#include "hid-ids.h"
+
+/*
+ * Fix negative events that are out of bounds.
+ */
+static int xinmo_event(struct hid_device *hdev, struct hid_field *field,
+               struct hid_usage *usage, __s32 value)
+{
+       switch (usage->code) {
+       case ABS_X:
+       case ABS_Y:
+       case ABS_Z:
+       case ABS_RX:
+               if (value < -1) {
+                       input_event(field->hidinput->input, usage->type,
+                               usage->code, -1);
+                       return 1;
+               }
+               break;
+       }
+
+       return 0;
+}
+
+static const struct hid_device_id xinmo_devices[] = {
+       { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
+       { }
+};
+
+MODULE_DEVICE_TABLE(hid, xinmo_devices);
+
+static struct hid_driver xinmo_driver = {
+       .name = "xinmo",
+       .id_table = xinmo_devices,
+       .event = xinmo_event
+};
+
+module_hid_driver(xinmo_driver);
+MODULE_LICENSE("GPL");