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authorAndreas Hübner <andreas@k4n.de>2012-02-22 02:10:06 +0100
committerJiri Kosina <jkosina@suse.cz>2012-02-22 11:30:17 +0100
commit1e93674a8ea169320950c5e6d1fa29a20b534e60 (patch)
tree79f4f684bad8bf5ff4bf31566fcc4cef5b8370b4 /drivers/hid/hid-saitek.c
parent0944e964b23baee17d40abbd314695289380c2fd (diff)
downloadop-kernel-dev-1e93674a8ea169320950c5e6d1fa29a20b534e60.zip
op-kernel-dev-1e93674a8ea169320950c5e6d1fa29a20b534e60.tar.gz
HID: add new driver for non-compliant Saitek devices
The driver currently only supports the PS1000 controller. It fixes the report descriptor by removing a non-existing axis and clearing the constant bit on the d-pad and button input reports. Signed-off-by: Andreas Hübner <andreas@k4n.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-saitek.c')
-rw-r--r--drivers/hid/hid-saitek.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/hid/hid-saitek.c b/drivers/hid/hid-saitek.c
new file mode 100644
index 0000000..45aea77
--- /dev/null
+++ b/drivers/hid/hid-saitek.c
@@ -0,0 +1,70 @@
+/*
+ * HID driver for Saitek devices, currently only the PS1000 (USB gamepad).
+ * Fixes the HID report descriptor by removing a non-existent axis and
+ * clearing the constant bit on the input reports for buttons and d-pad.
+ * (This module is based on "hid-ortek".)
+ *
+ * Copyright (c) 2012 Andreas Hübner
+ */
+
+/*
+ * 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"
+
+static __u8 *saitek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
+{
+ if (*rsize == 137 && rdesc[20] == 0x09 && rdesc[21] == 0x33
+ && rdesc[94] == 0x81 && rdesc[95] == 0x03
+ && rdesc[110] == 0x81 && rdesc[111] == 0x03) {
+
+ hid_info(hdev, "Fixing up Saitek PS1000 report descriptor\n");
+
+ /* convert spurious axis to a "noop" Logical Minimum (0) */
+ rdesc[20] = 0x15;
+ rdesc[21] = 0x00;
+
+ /* clear constant bit on buttons and d-pad */
+ rdesc[95] = 0x02;
+ rdesc[111] = 0x02;
+
+ }
+ return rdesc;
+}
+
+static const struct hid_device_id saitek_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000)},
+ { }
+};
+
+MODULE_DEVICE_TABLE(hid, saitek_devices);
+
+static struct hid_driver saitek_driver = {
+ .name = "saitek",
+ .id_table = saitek_devices,
+ .report_fixup = saitek_report_fixup
+};
+
+static int __init saitek_init(void)
+{
+ return hid_register_driver(&saitek_driver);
+}
+
+static void __exit saitek_exit(void)
+{
+ hid_unregister_driver(&saitek_driver);
+}
+
+module_init(saitek_init);
+module_exit(saitek_exit);
+MODULE_LICENSE("GPL");
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