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/*
* $Id: iforce.h,v 1.13 2002/07/07 10:22:50 jdeneux Exp $
*
* Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
* Copyright (c) 2001-2002 Johann Deneux <deneux@ifrance.com>
*
* USB/RS232 I-Force joysticks and wheels.
*/
/*
* 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/slab.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/usb.h>
#include <linux/serio.h>
#include <linux/config.h>
#include <linux/circ_buf.h>
#include <asm/semaphore.h>
/* This module provides arbitrary resource management routines.
* I use it to manage the device's memory.
* Despite the name of this module, I am *not* going to access the ioports.
*/
#include <linux/ioport.h>
#define IFORCE_MAX_LENGTH 16
/* iforce::bus */
#define IFORCE_232 1
#define IFORCE_USB 2
#define FALSE 0
#define TRUE 1
#define FF_EFFECTS_MAX 32
/* Each force feedback effect is made of one core effect, which can be
* associated to at most to effect modifiers
*/
#define FF_MOD1_IS_USED 0
#define FF_MOD2_IS_USED 1
#define FF_CORE_IS_USED 2
#define FF_CORE_IS_PLAYED 3 /* Effect is currently being played */
#define FF_CORE_SHOULD_PLAY 4 /* User wants the effect to be played */
#define FF_CORE_UPDATE 5 /* Effect is being updated */
#define FF_MODCORE_MAX 5
#define CHECK_OWNERSHIP(i, iforce) \
((i) < FF_EFFECTS_MAX && i >= 0 && \
test_bit(FF_CORE_IS_USED, (iforce)->core_effects[(i)].flags) && \
(current->pid == 0 || \
(iforce)->core_effects[(i)].owner == current->pid))
struct iforce_core_effect {
/* Information about where modifiers are stored in the device's memory */
struct resource mod1_chunk;
struct resource mod2_chunk;
unsigned long flags[NBITS(FF_MODCORE_MAX)];
pid_t owner;
/* Used to keep track of parameters of an effect. They are needed
* to know what parts of an effect changed in an update operation.
* We try to send only parameter packets if possible, as sending
* effect parameter requires the effect to be stoped and restarted
*/
struct ff_effect effect;
};
#define FF_CMD_EFFECT 0x010e
#define FF_CMD_ENVELOPE 0x0208
#define FF_CMD_MAGNITUDE 0x0303
#define FF_CMD_PERIOD 0x0407
#define FF_CMD_CONDITION 0x050a
#define FF_CMD_AUTOCENTER 0x4002
#define FF_CMD_PLAY 0x4103
#define FF_CMD_ENABLE 0x4201
#define FF_CMD_GAIN 0x4301
#define FF_CMD_QUERY 0xff01
/* Buffer for async write */
#define XMIT_SIZE 256
#define XMIT_INC(var, n) (var)+=n; (var)&= XMIT_SIZE -1
/* iforce::xmit_flags */
#define IFORCE_XMIT_RUNNING 0
#define IFORCE_XMIT_AGAIN 1
struct iforce_device {
u16 idvendor;
u16 idproduct;
char *name;
signed short *btn;
signed short *abs;
signed short *ff;
};
struct iforce {
struct input_dev *dev; /* Input device interface */
struct iforce_device *type;
int bus;
unsigned char data[IFORCE_MAX_LENGTH];
unsigned char edata[IFORCE_MAX_LENGTH];
u16 ecmd;
u16 expect_packet;
#ifdef CONFIG_JOYSTICK_IFORCE_232
struct serio *serio; /* RS232 transfer */
int idx, pkt, len, id;
unsigned char csum;
#endif
#ifdef CONFIG_JOYSTICK_IFORCE_USB
struct usb_device *usbdev; /* USB transfer */
struct urb *irq, *out, *ctrl;
struct usb_ctrlrequest cr;
#endif
spinlock_t xmit_lock;
/* Buffer used for asynchronous sending of bytes to the device */
struct circ_buf xmit;
unsigned char xmit_data[XMIT_SIZE];
long xmit_flags[1];
/* Force Feedback */
wait_queue_head_t wait;
struct resource device_memory;
struct iforce_core_effect core_effects[FF_EFFECTS_MAX];
struct semaphore mem_mutex;
};
/* Get hi and low bytes of a 16-bits int */
#define HI(a) ((unsigned char)((a) >> 8))
#define LO(a) ((unsigned char)((a) & 0xff))
/* For many parameters, it seems that 0x80 is a special value that should
* be avoided. Instead, we replace this value by 0x7f
*/
#define HIFIX80(a) ((unsigned char)(((a)<0? (a)+255 : (a))>>8))
/* Encode a time value */
#define TIME_SCALE(a) (a)
/* Public functions */
/* iforce-serio.c */
void iforce_serial_xmit(struct iforce *iforce);
/* iforce-usb.c */
void iforce_usb_xmit(struct iforce *iforce);
void iforce_usb_delete(struct iforce *iforce);
/* iforce-main.c */
int iforce_init_device(struct iforce *iforce);
void iforce_delete_device(struct iforce *iforce);
/* iforce-packets.c */
int iforce_control_playback(struct iforce*, u16 id, unsigned int);
void iforce_process_packet(struct iforce *iforce, u16 cmd, unsigned char *data, struct pt_regs *regs);
int iforce_send_packet(struct iforce *iforce, u16 cmd, unsigned char* data);
void iforce_dump_packet(char *msg, u16 cmd, unsigned char *data) ;
int iforce_get_id_packet(struct iforce *iforce, char *packet);
/* iforce-ff.c */
int iforce_upload_periodic(struct iforce*, struct ff_effect*, int is_update);
int iforce_upload_constant(struct iforce*, struct ff_effect*, int is_update);
int iforce_upload_condition(struct iforce*, struct ff_effect*, int is_update);
/* Public variables */
extern struct serio_driver iforce_serio_drv;
extern struct usb_driver iforce_usb_driver;
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