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![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): this program is free warftware 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 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 2 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520170857.095407238@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
194 lines
4.6 KiB
C
194 lines
4.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2000-2001 Vojtech Pavlik
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* Copyright (c) 2000 Mark Fletcher
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*/
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/*
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* Gravis Stinger gamepad driver for Linux
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*/
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/*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/serio.h>
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#define DRIVER_DESC "Gravis Stinger gamepad driver"
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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/*
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* Constants.
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*/
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#define STINGER_MAX_LENGTH 8
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/*
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* Per-Stinger data.
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*/
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struct stinger {
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struct input_dev *dev;
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int idx;
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unsigned char data[STINGER_MAX_LENGTH];
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char phys[32];
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};
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/*
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* stinger_process_packet() decodes packets the driver receives from the
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* Stinger. It updates the data accordingly.
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*/
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static void stinger_process_packet(struct stinger *stinger)
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{
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struct input_dev *dev = stinger->dev;
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unsigned char *data = stinger->data;
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if (!stinger->idx) return;
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input_report_key(dev, BTN_A, ((data[0] & 0x20) >> 5));
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input_report_key(dev, BTN_B, ((data[0] & 0x10) >> 4));
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input_report_key(dev, BTN_C, ((data[0] & 0x08) >> 3));
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input_report_key(dev, BTN_X, ((data[0] & 0x04) >> 2));
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input_report_key(dev, BTN_Y, ((data[3] & 0x20) >> 5));
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input_report_key(dev, BTN_Z, ((data[3] & 0x10) >> 4));
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input_report_key(dev, BTN_TL, ((data[3] & 0x08) >> 3));
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input_report_key(dev, BTN_TR, ((data[3] & 0x04) >> 2));
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input_report_key(dev, BTN_SELECT, ((data[3] & 0x02) >> 1));
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input_report_key(dev, BTN_START, (data[3] & 0x01));
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input_report_abs(dev, ABS_X, (data[1] & 0x3F) - ((data[0] & 0x01) << 6));
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input_report_abs(dev, ABS_Y, ((data[0] & 0x02) << 5) - (data[2] & 0x3F));
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input_sync(dev);
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return;
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}
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/*
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* stinger_interrupt() is called by the low level driver when characters
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* are ready for us. We then buffer them for further processing, or call the
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* packet processing routine.
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*/
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static irqreturn_t stinger_interrupt(struct serio *serio,
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unsigned char data, unsigned int flags)
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{
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struct stinger *stinger = serio_get_drvdata(serio);
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/* All Stinger packets are 4 bytes */
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if (stinger->idx < STINGER_MAX_LENGTH)
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stinger->data[stinger->idx++] = data;
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if (stinger->idx == 4) {
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stinger_process_packet(stinger);
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stinger->idx = 0;
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}
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return IRQ_HANDLED;
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}
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/*
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* stinger_disconnect() is the opposite of stinger_connect()
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*/
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static void stinger_disconnect(struct serio *serio)
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{
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struct stinger *stinger = serio_get_drvdata(serio);
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serio_close(serio);
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serio_set_drvdata(serio, NULL);
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input_unregister_device(stinger->dev);
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kfree(stinger);
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}
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/*
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* stinger_connect() is the routine that is called when someone adds a
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* new serio device that supports Stinger protocol and registers it as
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* an input device.
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*/
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static int stinger_connect(struct serio *serio, struct serio_driver *drv)
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{
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struct stinger *stinger;
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struct input_dev *input_dev;
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int err = -ENOMEM;
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stinger = kmalloc(sizeof(struct stinger), GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!stinger || !input_dev)
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goto fail1;
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stinger->dev = input_dev;
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snprintf(stinger->phys, sizeof(stinger->phys), "%s/serio0", serio->phys);
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input_dev->name = "Gravis Stinger";
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input_dev->phys = stinger->phys;
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input_dev->id.bustype = BUS_RS232;
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input_dev->id.vendor = SERIO_STINGER;
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input_dev->id.product = 0x0001;
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input_dev->id.version = 0x0100;
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input_dev->dev.parent = &serio->dev;
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
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input_dev->keybit[BIT_WORD(BTN_A)] = BIT_MASK(BTN_A) | BIT_MASK(BTN_B) |
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BIT_MASK(BTN_C) | BIT_MASK(BTN_X) | BIT_MASK(BTN_Y) |
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BIT_MASK(BTN_Z) | BIT_MASK(BTN_TL) | BIT_MASK(BTN_TR) |
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BIT_MASK(BTN_START) | BIT_MASK(BTN_SELECT);
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input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 4);
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input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 4);
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serio_set_drvdata(serio, stinger);
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err = serio_open(serio, drv);
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if (err)
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goto fail2;
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err = input_register_device(stinger->dev);
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if (err)
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goto fail3;
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return 0;
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fail3: serio_close(serio);
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fail2: serio_set_drvdata(serio, NULL);
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fail1: input_free_device(input_dev);
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kfree(stinger);
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return err;
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}
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/*
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* The serio driver structure.
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*/
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static const struct serio_device_id stinger_serio_ids[] = {
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{
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.type = SERIO_RS232,
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.proto = SERIO_STINGER,
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.id = SERIO_ANY,
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.extra = SERIO_ANY,
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},
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{ 0 }
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};
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MODULE_DEVICE_TABLE(serio, stinger_serio_ids);
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static struct serio_driver stinger_drv = {
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.driver = {
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.name = "stinger",
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},
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.description = DRIVER_DESC,
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.id_table = stinger_serio_ids,
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.interrupt = stinger_interrupt,
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.connect = stinger_connect,
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.disconnect = stinger_disconnect,
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};
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module_serio_driver(stinger_drv);
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