1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/hid/hid-cherry.c b/drivers/hid/hid-cherry.c
new file mode 100644
index 000000000000..b833b9769aba
--- /dev/null
+++ b/drivers/hid/hid-cherry.c
@@ -0,0 +1,87 @@
+/*
+ *  HID driver for some cherry "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) 2007 Paul Walmsley
+ *  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/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+/*
+ * Cherry Cymotion keyboard have an invalid HID report descriptor,
+ * that needs fixing before we can parse it.
+ */
+static void ch_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+		unsigned int rsize)
+{
+	if (rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
+		dev_info(&hdev->dev, "fixing up Cherry Cymotion report "
+				"descriptor\n");
+		rdesc[11] = rdesc[16] = 0xff;
+		rdesc[12] = rdesc[17] = 0x03;
+	}
+}
+
+#define ch_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, max, \
+					EV_KEY, (c))
+static int ch_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 0x301: ch_map_key_clear(KEY_PROG1);	break;
+	case 0x302: ch_map_key_clear(KEY_PROG2);	break;
+	case 0x303: ch_map_key_clear(KEY_PROG3);	break;
+	default:
+		return 0;
+	}
+
+	return 1;
+}
+
+static const struct hid_device_id ch_devices[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
+	{ }
+};
+MODULE_DEVICE_TABLE(hid, ch_devices);
+
+static struct hid_driver ch_driver = {
+	.name = "cherry",
+	.id_table = ch_devices,
+	.report_fixup = ch_report_fixup,
+	.input_mapping = ch_input_mapping,
+};
+
+static int ch_init(void)
+{
+	return hid_register_driver(&ch_driver);
+}
+
+static void ch_exit(void)
+{
+	hid_unregister_driver(&ch_driver);
+}
+
+module_init(ch_init);
+module_exit(ch_exit);
+MODULE_LICENSE("GPL");
+
+HID_COMPAT_LOAD_DRIVER(cherry);