HID: Add new driver for non-compliant Xin-Mo devices.
The driver currently only supports the Dual Arcade controller.
It 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.
Signed-off-by: Olivier Scherler <oscherler@ithink.ch>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-xinmo.c b/drivers/hid/hid-xinmo.c
new file mode 100644
index 0000000..6153e50
--- /dev/null
+++ b/drivers/hid/hid-xinmo.c
@@ -0,0 +1,72 @@
+/*
+ * 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
+};
+
+static int __init xinmo_init(void)
+{
+ return hid_register_driver(&xinmo_driver);
+}
+
+static void __exit xinmo_exit(void)
+{
+ hid_unregister_driver(&xinmo_driver);
+}
+
+module_init(xinmo_init);
+module_exit(xinmo_exit);
+MODULE_LICENSE("GPL");