diff options
Diffstat (limited to 'drivers/input/joystick/iforce/iforce.h')
| -rw-r--r-- | drivers/input/joystick/iforce/iforce.h | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/drivers/input/joystick/iforce/iforce.h b/drivers/input/joystick/iforce/iforce.h new file mode 100644 index 000000000000..bce247bc300b --- /dev/null +++ b/drivers/input/joystick/iforce/iforce.h @@ -0,0 +1,191 @@ +/* + * $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; |