Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/drivers/hid/hid-ezkey.c b/kernel/drivers/hid/hid-ezkey.c
new file mode 100644 (file)
index 0000000..212ac6b
--- /dev/null
+++ b/kernel/drivers/hid/hid-ezkey.c
@@ -0,0 +1,81 @@
+/*
+ *  HID driver for some ezkey "special" devices
+ *
+ *  Copyright (c) 1999 Andreas Gal
+ *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
+ *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
+ *  Copyright (c) 2006-2007 Jiri Kosina
+ *  Copyright (c) 2008 Jiri Slaby
+ */
+
+/*
+ * 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/input.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+#define ez_map_rel(c)  hid_map_usage(hi, usage, bit, max, EV_REL, (c))
+#define ez_map_key(c)  hid_map_usage(hi, usage, bit, max, EV_KEY, (c))
+
+static int ez_input_mapping(struct hid_device *hdev, struct hid_input *hi,
+               struct hid_field *field, struct hid_usage *usage,
+               unsigned long **bit, int *max)
+{
+       if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
+               return 0;
+
+       switch (usage->hid & HID_USAGE) {
+       case 0x230: ez_map_key(BTN_MOUSE);      break;
+       case 0x231: ez_map_rel(REL_WHEEL);      break;
+       /*
+        * this keyboard has a scrollwheel implemented in
+        * totally broken way. We map this usage temporarily
+        * to HWHEEL and handle it in the event quirk handler
+        */
+       case 0x232: ez_map_rel(REL_HWHEEL);     break;
+       default:
+               return 0;
+       }
+       return 1;
+}
+
+static int ez_event(struct hid_device *hdev, struct hid_field *field,
+               struct hid_usage *usage, __s32 value)
+{
+       if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
+                       !usage->type)
+               return 0;
+
+       /* handle the temporary quirky mapping to HWHEEL */
+       if (usage->type == EV_REL && usage->code == REL_HWHEEL) {
+               struct input_dev *input = field->hidinput->input;
+               input_event(input, usage->type, REL_WHEEL, -value);
+               return 1;
+       }
+
+       return 0;
+}
+
+static const struct hid_device_id ez_devices[] = {
+       { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
+       { }
+};
+MODULE_DEVICE_TABLE(hid, ez_devices);
+
+static struct hid_driver ez_driver = {
+       .name = "ezkey",
+       .id_table = ez_devices,
+       .input_mapping = ez_input_mapping,
+       .event = ez_event,
+};
+module_hid_driver(ez_driver);
+
+MODULE_LICENSE("GPL");