172 lines
5.1 KiB
C
172 lines
5.1 KiB
C
/*
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* Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
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* Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
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*
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* USB/RS232 I-Force joysticks and wheels.
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Should you need to contact me, the author, you can do so either by
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* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
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* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/spinlock.h>
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#include <linux/usb.h>
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#include <linux/serio.h>
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#include <linux/circ_buf.h>
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#include <linux/mutex.h>
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/* This module provides arbitrary resource management routines.
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* I use it to manage the device's memory.
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* Despite the name of this module, I am *not* going to access the ioports.
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*/
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#include <linux/ioport.h>
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#define IFORCE_MAX_LENGTH 16
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/* iforce::bus */
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#define IFORCE_232 1
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#define IFORCE_USB 2
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#define IFORCE_EFFECTS_MAX 32
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/* Each force feedback effect is made of one core effect, which can be
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* associated to at most to effect modifiers
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*/
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#define FF_MOD1_IS_USED 0
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#define FF_MOD2_IS_USED 1
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#define FF_CORE_IS_USED 2
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#define FF_CORE_IS_PLAYED 3 /* Effect is currently being played */
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#define FF_CORE_SHOULD_PLAY 4 /* User wants the effect to be played */
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#define FF_CORE_UPDATE 5 /* Effect is being updated */
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#define FF_MODCORE_CNT 6
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struct iforce_core_effect {
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/* Information about where modifiers are stored in the device's memory */
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struct resource mod1_chunk;
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struct resource mod2_chunk;
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unsigned long flags[BITS_TO_LONGS(FF_MODCORE_CNT)];
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};
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#define FF_CMD_EFFECT 0x010e
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#define FF_CMD_ENVELOPE 0x0208
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#define FF_CMD_MAGNITUDE 0x0303
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#define FF_CMD_PERIOD 0x0407
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#define FF_CMD_CONDITION 0x050a
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#define FF_CMD_AUTOCENTER 0x4002
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#define FF_CMD_PLAY 0x4103
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#define FF_CMD_ENABLE 0x4201
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#define FF_CMD_GAIN 0x4301
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#define FF_CMD_QUERY 0xff01
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/* Buffer for async write */
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#define XMIT_SIZE 256
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#define XMIT_INC(var, n) (var)+=n; (var)&= XMIT_SIZE -1
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/* iforce::xmit_flags */
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#define IFORCE_XMIT_RUNNING 0
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#define IFORCE_XMIT_AGAIN 1
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struct iforce_device {
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u16 idvendor;
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u16 idproduct;
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char *name;
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signed short *btn;
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signed short *abs;
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signed short *ff;
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};
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struct iforce {
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struct input_dev *dev; /* Input device interface */
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struct iforce_device *type;
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int bus;
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unsigned char data[IFORCE_MAX_LENGTH];
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unsigned char edata[IFORCE_MAX_LENGTH];
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u16 ecmd;
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u16 expect_packet;
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#ifdef CONFIG_JOYSTICK_IFORCE_232
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struct serio *serio; /* RS232 transfer */
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int idx, pkt, len, id;
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unsigned char csum;
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#endif
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#ifdef CONFIG_JOYSTICK_IFORCE_USB
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struct usb_device *usbdev; /* USB transfer */
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struct urb *irq, *out, *ctrl;
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struct usb_ctrlrequest cr;
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#endif
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spinlock_t xmit_lock;
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/* Buffer used for asynchronous sending of bytes to the device */
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struct circ_buf xmit;
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unsigned char xmit_data[XMIT_SIZE];
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unsigned long xmit_flags[1];
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/* Force Feedback */
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wait_queue_head_t wait;
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struct resource device_memory;
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struct iforce_core_effect core_effects[IFORCE_EFFECTS_MAX];
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struct mutex mem_mutex;
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};
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/* Get hi and low bytes of a 16-bits int */
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#define HI(a) ((unsigned char)((a) >> 8))
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#define LO(a) ((unsigned char)((a) & 0xff))
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/* For many parameters, it seems that 0x80 is a special value that should
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* be avoided. Instead, we replace this value by 0x7f
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*/
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#define HIFIX80(a) ((unsigned char)(((a)<0? (a)+255 : (a))>>8))
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/* Encode a time value */
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#define TIME_SCALE(a) (a)
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/* Public functions */
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/* iforce-serio.c */
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void iforce_serial_xmit(struct iforce *iforce);
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/* iforce-usb.c */
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void iforce_usb_xmit(struct iforce *iforce);
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/* iforce-main.c */
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int iforce_init_device(struct iforce *iforce);
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/* iforce-packets.c */
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int iforce_control_playback(struct iforce*, u16 id, unsigned int);
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void iforce_process_packet(struct iforce *iforce, u16 cmd, unsigned char *data);
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int iforce_send_packet(struct iforce *iforce, u16 cmd, unsigned char* data);
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void iforce_dump_packet(char *msg, u16 cmd, unsigned char *data) ;
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int iforce_get_id_packet(struct iforce *iforce, char *packet);
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/* iforce-ff.c */
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int iforce_upload_periodic(struct iforce *, struct ff_effect *, struct ff_effect *);
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int iforce_upload_constant(struct iforce *, struct ff_effect *, struct ff_effect *);
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int iforce_upload_condition(struct iforce *, struct ff_effect *, struct ff_effect *);
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/* Public variables */
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extern struct serio_driver iforce_serio_drv;
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extern struct usb_driver iforce_usb_driver;
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