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authorJiri Kosina <jkosina@suse.cz>2011-02-17 15:12:45 +0100
committerJiri Kosina <jkosina@suse.cz>2011-02-17 15:12:45 +0100
commit177900e8c9ab28cdf097314fe7dd3877774df97d (patch)
tree1936e26251316bdbaebdd07f2f3ede2d1cc9e976 /drivers/hid/hid-keytouch.c
parent6d3bfb74341c2c1454fcf5ec9c4dd707011f78e5 (diff)
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HID: add support for Keytouch IEC 60945
The keyboard has several bugs in its report descriptor, most importantly the Logical Min/Max are completely off. Replace it with simplified descriptor which describes it properly. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-keytouch.c')
-rw-r--r--drivers/hid/hid-keytouch.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/hid/hid-keytouch.c b/drivers/hid/hid-keytouch.c
new file mode 100644
index 000000000000..07cd825f6f01
--- /dev/null
+++ b/drivers/hid/hid-keytouch.c
@@ -0,0 +1,66 @@
+/*
+ * HID driver for Keytouch devices not fully compliant with HID standard
+ *
+ * Copyright (c) 2011 Jiri Kosina
+ */
+
+/*
+ * 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"
+
+/* Replace the broken report descriptor of this device with rather
+ * a default one */
+static __u8 keytouch_fixed_rdesc[] = {
+0x05, 0x01, 0x09, 0x06, 0xa1, 0x01, 0x05, 0x07, 0x19, 0xe0, 0x29, 0xe7, 0x15,
+0x00, 0x25, 0x01, 0x75, 0x01, 0x95, 0x08, 0x81, 0x02, 0x95, 0x01, 0x75, 0x08,
+0x81, 0x01, 0x95, 0x03, 0x75, 0x01, 0x05, 0x08, 0x19, 0x01, 0x29, 0x03, 0x91,
+0x02, 0x95, 0x05, 0x75, 0x01, 0x91, 0x01, 0x95, 0x06, 0x75, 0x08, 0x15, 0x00,
+0x26, 0xff, 0x00, 0x05, 0x07, 0x19, 0x00, 0x2a, 0xff, 0x00, 0x81, 0x00, 0xc0
+};
+
+static __u8 *keytouch_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
+{
+ hid_info(hdev, "fixing up Keytouch IEC report descriptor\n");
+
+ rdesc = keytouch_fixed_rdesc;
+ *rsize = sizeof(keytouch_fixed_rdesc);
+
+ return rdesc;
+}
+
+static const struct hid_device_id keytouch_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, keytouch_devices);
+
+static struct hid_driver keytouch_driver = {
+ .name = "keytouch",
+ .id_table = keytouch_devices,
+ .report_fixup = keytouch_report_fixup,
+};
+
+static int __init keytouch_init(void)
+{
+ return hid_register_driver(&keytouch_driver);
+}
+
+static void __exit keytouch_exit(void)
+{
+ hid_unregister_driver(&keytouch_driver);
+}
+
+module_init(keytouch_init);
+module_exit(keytouch_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jiri Kosina");