mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): 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 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 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
410 lines
10 KiB
C
410 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) 1998-2001 Vojtech Pavlik
|
|
*/
|
|
|
|
/*
|
|
* Gravis/Kensington GrIP protocol joystick and gamepad driver for Linux
|
|
*/
|
|
|
|
/*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/gameport.h>
|
|
#include <linux/input.h>
|
|
#include <linux/jiffies.h>
|
|
|
|
#define DRIVER_DESC "Gravis GrIP protocol joystick driver"
|
|
|
|
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#define GRIP_MODE_GPP 1
|
|
#define GRIP_MODE_BD 2
|
|
#define GRIP_MODE_XT 3
|
|
#define GRIP_MODE_DC 4
|
|
|
|
#define GRIP_LENGTH_GPP 24
|
|
#define GRIP_STROBE_GPP 200 /* 200 us */
|
|
#define GRIP_LENGTH_XT 4
|
|
#define GRIP_STROBE_XT 64 /* 64 us */
|
|
#define GRIP_MAX_CHUNKS_XT 10
|
|
#define GRIP_MAX_BITS_XT 30
|
|
|
|
struct grip {
|
|
struct gameport *gameport;
|
|
struct input_dev *dev[2];
|
|
unsigned char mode[2];
|
|
int reads;
|
|
int bads;
|
|
char phys[2][32];
|
|
};
|
|
|
|
static int grip_btn_gpp[] = { BTN_START, BTN_SELECT, BTN_TR2, BTN_Y, 0, BTN_TL2, BTN_A, BTN_B, BTN_X, 0, BTN_TL, BTN_TR, -1 };
|
|
static int grip_btn_bd[] = { BTN_THUMB, BTN_THUMB2, BTN_TRIGGER, BTN_TOP, BTN_BASE, -1 };
|
|
static int grip_btn_xt[] = { BTN_TRIGGER, BTN_THUMB, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_SELECT, BTN_START, BTN_MODE, -1 };
|
|
static int grip_btn_dc[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_BASE5, -1 };
|
|
|
|
static int grip_abs_gpp[] = { ABS_X, ABS_Y, -1 };
|
|
static int grip_abs_bd[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, -1 };
|
|
static int grip_abs_xt[] = { ABS_X, ABS_Y, ABS_BRAKE, ABS_GAS, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, -1 };
|
|
static int grip_abs_dc[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, -1 };
|
|
|
|
static char *grip_name[] = { NULL, "Gravis GamePad Pro", "Gravis Blackhawk Digital",
|
|
"Gravis Xterminator Digital", "Gravis Xterminator DualControl" };
|
|
static int *grip_abs[] = { NULL, grip_abs_gpp, grip_abs_bd, grip_abs_xt, grip_abs_dc };
|
|
static int *grip_btn[] = { NULL, grip_btn_gpp, grip_btn_bd, grip_btn_xt, grip_btn_dc };
|
|
static char grip_anx[] = { 0, 0, 3, 5, 5 };
|
|
static char grip_cen[] = { 0, 0, 2, 2, 4 };
|
|
|
|
/*
|
|
* grip_gpp_read_packet() reads a Gravis GamePad Pro packet.
|
|
*/
|
|
|
|
static int grip_gpp_read_packet(struct gameport *gameport, int shift, unsigned int *data)
|
|
{
|
|
unsigned long flags;
|
|
unsigned char u, v;
|
|
unsigned int t;
|
|
int i;
|
|
|
|
int strobe = gameport_time(gameport, GRIP_STROBE_GPP);
|
|
|
|
data[0] = 0;
|
|
t = strobe;
|
|
i = 0;
|
|
|
|
local_irq_save(flags);
|
|
|
|
v = gameport_read(gameport) >> shift;
|
|
|
|
do {
|
|
t--;
|
|
u = v; v = (gameport_read(gameport) >> shift) & 3;
|
|
if (~v & u & 1) {
|
|
data[0] |= (v >> 1) << i++;
|
|
t = strobe;
|
|
}
|
|
} while (i < GRIP_LENGTH_GPP && t > 0);
|
|
|
|
local_irq_restore(flags);
|
|
|
|
if (i < GRIP_LENGTH_GPP) return -1;
|
|
|
|
for (i = 0; i < GRIP_LENGTH_GPP && (data[0] & 0xfe4210) ^ 0x7c0000; i++)
|
|
data[0] = data[0] >> 1 | (data[0] & 1) << (GRIP_LENGTH_GPP - 1);
|
|
|
|
return -(i == GRIP_LENGTH_GPP);
|
|
}
|
|
|
|
/*
|
|
* grip_xt_read_packet() reads a Gravis Xterminator packet.
|
|
*/
|
|
|
|
static int grip_xt_read_packet(struct gameport *gameport, int shift, unsigned int *data)
|
|
{
|
|
unsigned int i, j, buf, crc;
|
|
unsigned char u, v, w;
|
|
unsigned long flags;
|
|
unsigned int t;
|
|
char status;
|
|
|
|
int strobe = gameport_time(gameport, GRIP_STROBE_XT);
|
|
|
|
data[0] = data[1] = data[2] = data[3] = 0;
|
|
status = buf = i = j = 0;
|
|
t = strobe;
|
|
|
|
local_irq_save(flags);
|
|
|
|
v = w = (gameport_read(gameport) >> shift) & 3;
|
|
|
|
do {
|
|
t--;
|
|
u = (gameport_read(gameport) >> shift) & 3;
|
|
|
|
if (u ^ v) {
|
|
|
|
if ((u ^ v) & 1) {
|
|
buf = (buf << 1) | (u >> 1);
|
|
t = strobe;
|
|
i++;
|
|
} else
|
|
|
|
if ((((u ^ v) & (v ^ w)) >> 1) & ~(u | v | w) & 1) {
|
|
if (i == 20) {
|
|
crc = buf ^ (buf >> 7) ^ (buf >> 14);
|
|
if (!((crc ^ (0x25cb9e70 >> ((crc >> 2) & 0x1c))) & 0xf)) {
|
|
data[buf >> 18] = buf >> 4;
|
|
status |= 1 << (buf >> 18);
|
|
}
|
|
j++;
|
|
}
|
|
t = strobe;
|
|
buf = 0;
|
|
i = 0;
|
|
}
|
|
w = v;
|
|
v = u;
|
|
}
|
|
|
|
} while (status != 0xf && i < GRIP_MAX_BITS_XT && j < GRIP_MAX_CHUNKS_XT && t > 0);
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return -(status != 0xf);
|
|
}
|
|
|
|
/*
|
|
* grip_timer() repeatedly polls the joysticks and generates events.
|
|
*/
|
|
|
|
static void grip_poll(struct gameport *gameport)
|
|
{
|
|
struct grip *grip = gameport_get_drvdata(gameport);
|
|
unsigned int data[GRIP_LENGTH_XT];
|
|
struct input_dev *dev;
|
|
int i, j;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
|
|
dev = grip->dev[i];
|
|
if (!dev)
|
|
continue;
|
|
|
|
grip->reads++;
|
|
|
|
switch (grip->mode[i]) {
|
|
|
|
case GRIP_MODE_GPP:
|
|
|
|
if (grip_gpp_read_packet(grip->gameport, (i << 1) + 4, data)) {
|
|
grip->bads++;
|
|
break;
|
|
}
|
|
|
|
input_report_abs(dev, ABS_X, ((*data >> 15) & 1) - ((*data >> 16) & 1));
|
|
input_report_abs(dev, ABS_Y, ((*data >> 13) & 1) - ((*data >> 12) & 1));
|
|
|
|
for (j = 0; j < 12; j++)
|
|
if (grip_btn_gpp[j])
|
|
input_report_key(dev, grip_btn_gpp[j], (*data >> j) & 1);
|
|
|
|
break;
|
|
|
|
case GRIP_MODE_BD:
|
|
|
|
if (grip_xt_read_packet(grip->gameport, (i << 1) + 4, data)) {
|
|
grip->bads++;
|
|
break;
|
|
}
|
|
|
|
input_report_abs(dev, ABS_X, (data[0] >> 2) & 0x3f);
|
|
input_report_abs(dev, ABS_Y, 63 - ((data[0] >> 8) & 0x3f));
|
|
input_report_abs(dev, ABS_THROTTLE, (data[2] >> 8) & 0x3f);
|
|
|
|
input_report_abs(dev, ABS_HAT0X, ((data[2] >> 1) & 1) - ( data[2] & 1));
|
|
input_report_abs(dev, ABS_HAT0Y, ((data[2] >> 2) & 1) - ((data[2] >> 3) & 1));
|
|
|
|
for (j = 0; j < 5; j++)
|
|
input_report_key(dev, grip_btn_bd[j], (data[3] >> (j + 4)) & 1);
|
|
|
|
break;
|
|
|
|
case GRIP_MODE_XT:
|
|
|
|
if (grip_xt_read_packet(grip->gameport, (i << 1) + 4, data)) {
|
|
grip->bads++;
|
|
break;
|
|
}
|
|
|
|
input_report_abs(dev, ABS_X, (data[0] >> 2) & 0x3f);
|
|
input_report_abs(dev, ABS_Y, 63 - ((data[0] >> 8) & 0x3f));
|
|
input_report_abs(dev, ABS_BRAKE, (data[1] >> 2) & 0x3f);
|
|
input_report_abs(dev, ABS_GAS, (data[1] >> 8) & 0x3f);
|
|
input_report_abs(dev, ABS_THROTTLE, (data[2] >> 8) & 0x3f);
|
|
|
|
input_report_abs(dev, ABS_HAT0X, ((data[2] >> 1) & 1) - ( data[2] & 1));
|
|
input_report_abs(dev, ABS_HAT0Y, ((data[2] >> 2) & 1) - ((data[2] >> 3) & 1));
|
|
input_report_abs(dev, ABS_HAT1X, ((data[2] >> 5) & 1) - ((data[2] >> 4) & 1));
|
|
input_report_abs(dev, ABS_HAT1Y, ((data[2] >> 6) & 1) - ((data[2] >> 7) & 1));
|
|
|
|
for (j = 0; j < 11; j++)
|
|
input_report_key(dev, grip_btn_xt[j], (data[3] >> (j + 3)) & 1);
|
|
break;
|
|
|
|
case GRIP_MODE_DC:
|
|
|
|
if (grip_xt_read_packet(grip->gameport, (i << 1) + 4, data)) {
|
|
grip->bads++;
|
|
break;
|
|
}
|
|
|
|
input_report_abs(dev, ABS_X, (data[0] >> 2) & 0x3f);
|
|
input_report_abs(dev, ABS_Y, (data[0] >> 8) & 0x3f);
|
|
input_report_abs(dev, ABS_RX, (data[1] >> 2) & 0x3f);
|
|
input_report_abs(dev, ABS_RY, (data[1] >> 8) & 0x3f);
|
|
input_report_abs(dev, ABS_THROTTLE, (data[2] >> 8) & 0x3f);
|
|
|
|
input_report_abs(dev, ABS_HAT0X, ((data[2] >> 1) & 1) - ( data[2] & 1));
|
|
input_report_abs(dev, ABS_HAT0Y, ((data[2] >> 2) & 1) - ((data[2] >> 3) & 1));
|
|
|
|
for (j = 0; j < 9; j++)
|
|
input_report_key(dev, grip_btn_dc[j], (data[3] >> (j + 3)) & 1);
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
input_sync(dev);
|
|
}
|
|
}
|
|
|
|
static int grip_open(struct input_dev *dev)
|
|
{
|
|
struct grip *grip = input_get_drvdata(dev);
|
|
|
|
gameport_start_polling(grip->gameport);
|
|
return 0;
|
|
}
|
|
|
|
static void grip_close(struct input_dev *dev)
|
|
{
|
|
struct grip *grip = input_get_drvdata(dev);
|
|
|
|
gameport_stop_polling(grip->gameport);
|
|
}
|
|
|
|
static int grip_connect(struct gameport *gameport, struct gameport_driver *drv)
|
|
{
|
|
struct grip *grip;
|
|
struct input_dev *input_dev;
|
|
unsigned int data[GRIP_LENGTH_XT];
|
|
int i, j, t;
|
|
int err;
|
|
|
|
if (!(grip = kzalloc(sizeof(struct grip), GFP_KERNEL)))
|
|
return -ENOMEM;
|
|
|
|
grip->gameport = gameport;
|
|
|
|
gameport_set_drvdata(gameport, grip);
|
|
|
|
err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
|
|
if (err)
|
|
goto fail1;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
if (!grip_gpp_read_packet(gameport, (i << 1) + 4, data)) {
|
|
grip->mode[i] = GRIP_MODE_GPP;
|
|
continue;
|
|
}
|
|
if (!grip_xt_read_packet(gameport, (i << 1) + 4, data)) {
|
|
if (!(data[3] & 7)) {
|
|
grip->mode[i] = GRIP_MODE_BD;
|
|
continue;
|
|
}
|
|
if (!(data[2] & 0xf0)) {
|
|
grip->mode[i] = GRIP_MODE_XT;
|
|
continue;
|
|
}
|
|
grip->mode[i] = GRIP_MODE_DC;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!grip->mode[0] && !grip->mode[1]) {
|
|
err = -ENODEV;
|
|
goto fail2;
|
|
}
|
|
|
|
gameport_set_poll_handler(gameport, grip_poll);
|
|
gameport_set_poll_interval(gameport, 20);
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
if (!grip->mode[i])
|
|
continue;
|
|
|
|
grip->dev[i] = input_dev = input_allocate_device();
|
|
if (!input_dev) {
|
|
err = -ENOMEM;
|
|
goto fail3;
|
|
}
|
|
|
|
snprintf(grip->phys[i], sizeof(grip->phys[i]),
|
|
"%s/input%d", gameport->phys, i);
|
|
|
|
input_dev->name = grip_name[grip->mode[i]];
|
|
input_dev->phys = grip->phys[i];
|
|
input_dev->id.bustype = BUS_GAMEPORT;
|
|
input_dev->id.vendor = GAMEPORT_ID_VENDOR_GRAVIS;
|
|
input_dev->id.product = grip->mode[i];
|
|
input_dev->id.version = 0x0100;
|
|
input_dev->dev.parent = &gameport->dev;
|
|
|
|
input_set_drvdata(input_dev, grip);
|
|
|
|
input_dev->open = grip_open;
|
|
input_dev->close = grip_close;
|
|
|
|
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
|
|
|
|
for (j = 0; (t = grip_abs[grip->mode[i]][j]) >= 0; j++) {
|
|
|
|
if (j < grip_cen[grip->mode[i]])
|
|
input_set_abs_params(input_dev, t, 14, 52, 1, 2);
|
|
else if (j < grip_anx[grip->mode[i]])
|
|
input_set_abs_params(input_dev, t, 3, 57, 1, 0);
|
|
else
|
|
input_set_abs_params(input_dev, t, -1, 1, 0, 0);
|
|
}
|
|
|
|
for (j = 0; (t = grip_btn[grip->mode[i]][j]) >= 0; j++)
|
|
if (t > 0)
|
|
set_bit(t, input_dev->keybit);
|
|
|
|
err = input_register_device(grip->dev[i]);
|
|
if (err)
|
|
goto fail4;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail4: input_free_device(grip->dev[i]);
|
|
fail3: while (--i >= 0)
|
|
if (grip->dev[i])
|
|
input_unregister_device(grip->dev[i]);
|
|
fail2: gameport_close(gameport);
|
|
fail1: gameport_set_drvdata(gameport, NULL);
|
|
kfree(grip);
|
|
return err;
|
|
}
|
|
|
|
static void grip_disconnect(struct gameport *gameport)
|
|
{
|
|
struct grip *grip = gameport_get_drvdata(gameport);
|
|
int i;
|
|
|
|
for (i = 0; i < 2; i++)
|
|
if (grip->dev[i])
|
|
input_unregister_device(grip->dev[i]);
|
|
gameport_close(gameport);
|
|
gameport_set_drvdata(gameport, NULL);
|
|
kfree(grip);
|
|
}
|
|
|
|
static struct gameport_driver grip_drv = {
|
|
.driver = {
|
|
.name = "grip",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.description = DRIVER_DESC,
|
|
.connect = grip_connect,
|
|
.disconnect = grip_disconnect,
|
|
};
|
|
|
|
module_gameport_driver(grip_drv);
|