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linux/drivers/input/joystick/grip.c
Tim Schmielau 4e57b68178 [PATCH] fix missing includes 
I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the number of indirect includes of sched.h
by ~300. Another ~400 pointless direct includes can be removed after
this disentangling (patch to follow later).
However, quite a few indirect includes need to be fixed up for this.

In order to feed the patches through -mm with as little disturbance as
possible, I've split out the fixes I accumulated up to now (complete for
i386 and x86_64, more archs to follow later) and post them before the real
patch.  This way this large part of the patch is kept simple with only
adding #includes, and all hunks are independent of each other.  So if any
hunk rejects or gets in the way of other patches, just drop it.  My scripts
will pick it up again in the next round.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:32 -08:00

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/*
* $Id: grip.c,v 1.21 2002/01/22 20:27:57 vojtech Exp $
*
* Copyright (c) 1998-2001 Vojtech Pavlik
*/
/*
* Gravis/Kensington GrIP protocol joystick and gamepad driver for Linux
*/
/*
* 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
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.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];
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 = dev->private;
gameport_start_polling(grip->gameport);
return 0;
}
static void grip_close(struct input_dev *dev)
{
struct grip *grip = dev->private;
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;
}
sprintf(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->cdev.dev = &gameport->dev;
input_dev->private = grip;
input_dev->open = grip_open;
input_dev->close = grip_close;
input_dev->evbit[0] = BIT(EV_KEY) | BIT(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);
input_register_device(grip->dev[i]);
}
return 0;
fail3: for (i = 0; i < 2; i++)
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",
},
.description = DRIVER_DESC,
.connect = grip_connect,
.disconnect = grip_disconnect,
};
static int __init grip_init(void)
{
gameport_register_driver(&grip_drv);
return 0;
}
static void __exit grip_exit(void)
{
gameport_unregister_driver(&grip_drv);
}
module_init(grip_init);
module_exit(grip_exit);
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