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![Darren Salt](/assets/img/avatar_default.png)
Signed-off-by: Darren Salt <devspam@moreofthesa.me.uk> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
203 lines
5 KiB
C
203 lines
5 KiB
C
/*
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* HID driver for Saitek devices.
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*
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* PS1000 (USB gamepad):
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* Fixes the HID report descriptor by removing a non-existent axis and
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* clearing the constant bit on the input reports for buttons and d-pad.
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* (This module is based on "hid-ortek".)
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* Copyright (c) 2012 Andreas Hübner
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*
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* R.A.T.7, R.A.T.9, M.M.O.7 (USB gaming mice):
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* Fixes the mode button which cycles through three constantly pressed
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* buttons. All three press events are mapped to one button and the
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* missing release event is generated immediately.
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*
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include "hid-ids.h"
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#define SAITEK_FIX_PS1000 0x0001
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#define SAITEK_RELEASE_MODE_RAT7 0x0002
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#define SAITEK_RELEASE_MODE_MMO7 0x0004
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struct saitek_sc {
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unsigned long quirks;
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int mode;
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};
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static int saitek_probe(struct hid_device *hdev,
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const struct hid_device_id *id)
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{
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unsigned long quirks = id->driver_data;
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struct saitek_sc *ssc;
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int ret;
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ssc = devm_kzalloc(&hdev->dev, sizeof(*ssc), GFP_KERNEL);
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if (ssc == NULL) {
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hid_err(hdev, "can't alloc saitek descriptor\n");
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return -ENOMEM;
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}
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ssc->quirks = quirks;
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ssc->mode = -1;
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hid_set_drvdata(hdev, ssc);
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ret = hid_parse(hdev);
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if (ret) {
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hid_err(hdev, "parse failed\n");
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return ret;
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}
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ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
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if (ret) {
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hid_err(hdev, "hw start failed\n");
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return ret;
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}
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return 0;
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}
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static __u8 *saitek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
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unsigned int *rsize)
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{
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struct saitek_sc *ssc = hid_get_drvdata(hdev);
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if ((ssc->quirks & SAITEK_FIX_PS1000) && *rsize == 137 &&
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rdesc[20] == 0x09 && rdesc[21] == 0x33 &&
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rdesc[94] == 0x81 && rdesc[95] == 0x03 &&
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rdesc[110] == 0x81 && rdesc[111] == 0x03) {
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hid_info(hdev, "Fixing up Saitek PS1000 report descriptor\n");
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/* convert spurious axis to a "noop" Logical Minimum (0) */
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rdesc[20] = 0x15;
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rdesc[21] = 0x00;
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/* clear constant bit on buttons and d-pad */
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rdesc[95] = 0x02;
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rdesc[111] = 0x02;
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}
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return rdesc;
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}
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static int saitek_raw_event(struct hid_device *hdev,
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struct hid_report *report, u8 *raw_data, int size)
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{
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struct saitek_sc *ssc = hid_get_drvdata(hdev);
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if (ssc->quirks & SAITEK_RELEASE_MODE_RAT7 && size == 7) {
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/* R.A.T.7 uses bits 13, 14, 15 for the mode */
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int mode = -1;
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if (raw_data[1] & 0x01)
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mode = 0;
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else if (raw_data[1] & 0x02)
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mode = 1;
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else if (raw_data[1] & 0x04)
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mode = 2;
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/* clear mode bits */
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raw_data[1] &= ~0x07;
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if (mode != ssc->mode) {
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hid_dbg(hdev, "entered mode %d\n", mode);
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if (ssc->mode != -1) {
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/* use bit 13 as the mode button */
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raw_data[1] |= 0x04;
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}
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ssc->mode = mode;
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}
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} else if (ssc->quirks & SAITEK_RELEASE_MODE_MMO7 && size == 8) {
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/* M.M.O.7 uses bits 8, 22, 23 for the mode */
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int mode = -1;
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if (raw_data[1] & 0x80)
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mode = 0;
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else if (raw_data[2] & 0x01)
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mode = 1;
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else if (raw_data[2] & 0x02)
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mode = 2;
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/* clear mode bits */
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raw_data[1] &= ~0x80;
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raw_data[2] &= ~0x03;
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if (mode != ssc->mode) {
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hid_dbg(hdev, "entered mode %d\n", mode);
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if (ssc->mode != -1) {
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/* use bit 8 as the mode button, bits 22
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* and 23 do not represent buttons
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* according to the HID report descriptor
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*/
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raw_data[1] |= 0x80;
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}
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ssc->mode = mode;
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}
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}
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return 0;
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}
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static int saitek_event(struct hid_device *hdev, struct hid_field *field,
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struct hid_usage *usage, __s32 value)
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{
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struct saitek_sc *ssc = hid_get_drvdata(hdev);
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struct input_dev *input = field->hidinput->input;
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if (usage->type == EV_KEY && value &&
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(((ssc->quirks & SAITEK_RELEASE_MODE_RAT7) &&
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usage->code - BTN_MOUSE == 10) ||
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((ssc->quirks & SAITEK_RELEASE_MODE_MMO7) &&
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usage->code - BTN_MOUSE == 15))) {
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input_report_key(input, usage->code, 1);
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/* report missing release event */
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input_report_key(input, usage->code, 0);
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return 1;
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}
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return 0;
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}
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static const struct hid_device_id saitek_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000),
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.driver_data = SAITEK_FIX_PS1000 },
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{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7_OLD),
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.driver_data = SAITEK_RELEASE_MODE_RAT7 },
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{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7),
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.driver_data = SAITEK_RELEASE_MODE_RAT7 },
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{ HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_RAT9),
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.driver_data = SAITEK_RELEASE_MODE_RAT7 },
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{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_MMO7),
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.driver_data = SAITEK_RELEASE_MODE_MMO7 },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, saitek_devices);
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static struct hid_driver saitek_driver = {
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.name = "saitek",
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.id_table = saitek_devices,
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.probe = saitek_probe,
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.report_fixup = saitek_report_fixup,
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.raw_event = saitek_raw_event,
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.event = saitek_event,
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};
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module_hid_driver(saitek_driver);
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MODULE_LICENSE("GPL");
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