adi.c
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- /*
- * $Id: adi.c,v 1.15 2001/01/09 13:32:39 vojtech Exp $
- *
- * Copyright (c) 1998-2000 Vojtech Pavlik
- *
- * Sponsored by SuSE
- */
- /*
- * Logitech ADI joystick family 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@suse.cz>, or by paper mail:
- * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
- */
- #include <linux/delay.h>
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/string.h>
- #include <linux/slab.h>
- #include <linux/input.h>
- #include <linux/gameport.h>
- #include <linux/init.h>
- /*
- * Times, array sizes, flags, ids.
- */
- #define ADI_MAX_START 200 /* Trigger to packet timeout [200us] */
- #define ADI_MAX_STROBE 40 /* Single bit timeout [40us] */
- #define ADI_REFRESH_TIME HZ/50 /* How often to poll the joystick [20 ms] */
- #define ADI_INIT_DELAY 10 /* Delay after init packet [10ms] */
- #define ADI_DATA_DELAY 4 /* Delay after data packet [4ms] */
- #define ADI_MAX_LENGTH 256
- #define ADI_MIN_LENGTH 8
- #define ADI_MIN_LEN_LENGTH 10
- #define ADI_MIN_ID_LENGTH 66
- #define ADI_MAX_NAME_LENGTH 48
- #define ADI_MAX_CNAME_LENGTH 16
- #define ADI_FLAG_HAT 0x04
- #define ADI_FLAG_10BIT 0x08
- #define ADI_ID_TPD 0x01
- #define ADI_ID_WGP 0x06
- #define ADI_ID_WGPE 0x08
- #define ADI_ID_MAX 0x0a
- /*
- * Names, buttons, axes ...
- */
- static char *adi_names[] = { "WingMan Extreme Digital", "ThunderPad Digital", "SideCar", "CyberMan 2",
- "WingMan Interceptor", "WingMan Formula", "WingMan GamePad",
- "WingMan Extreme Digital 3D", "WingMan GamePad Extreme",
- "WingMan GamePad USB", "Unknown Device %#x" };
- static char adi_wmgpe_abs[] = { ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y };
- static char adi_wmi_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y };
- static char adi_wmed3d_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RZ, ABS_HAT0X, ABS_HAT0Y };
- static char adi_cm2_abs[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ };
- static char adi_wmf_abs[] = { ABS_WHEEL, ABS_GAS, ABS_BRAKE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y };
- static short adi_wmgpe_key[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START, BTN_MODE, BTN_SELECT };
- static short adi_wmi_key[] = { BTN_TRIGGER, BTN_TOP, BTN_THUMB, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_EXTRA };
- static short adi_wmed3d_key[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2 };
- static short adi_cm2_key[] = { BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8 };
- static char* adi_abs[] = { adi_wmi_abs, adi_wmgpe_abs, adi_wmf_abs, adi_cm2_abs, adi_wmi_abs, adi_wmf_abs,
- adi_wmgpe_abs, adi_wmed3d_abs, adi_wmgpe_abs, adi_wmgpe_abs, adi_wmi_abs };
- static short* adi_key[] = { adi_wmi_key, adi_wmgpe_key, adi_cm2_key, adi_cm2_key, adi_wmi_key, adi_cm2_key,
- adi_wmgpe_key, adi_wmed3d_key, adi_wmgpe_key, adi_wmgpe_key, adi_wmi_key };
- /*
- * Hat to axis conversion arrays.
- */
- static struct {
- int x;
- int y;
- } adi_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
- /*
- * Per-port information.
- */
- struct adi {
- struct input_dev dev;
- int length;
- int ret;
- int idx;
- unsigned char id;
- char buttons;
- char axes10;
- char axes8;
- signed char pad;
- char hats;
- char *abs;
- short *key;
- char name[ADI_MAX_NAME_LENGTH];
- char cname[ADI_MAX_CNAME_LENGTH];
- unsigned char data[ADI_MAX_LENGTH];
- };
- struct adi_port {
- struct gameport *gameport;
- struct timer_list timer;
- struct adi adi[2];
- int bad;
- int reads;
- int used;
- };
- /*
- * adi_read_packet() reads a Logitech ADI packet.
- */
- static void adi_read_packet(struct adi_port *port)
- {
- struct adi *adi = port->adi;
- struct gameport *gameport = port->gameport;
- unsigned char u, v, w, x, z;
- int t[2], s[2], i;
- unsigned long flags;
- for (i = 0; i < 2; i++) {
- adi[i].ret = -1;
- t[i] = gameport_time(gameport, ADI_MAX_START);
- s[i] = 0;
- }
- __save_flags(flags);
- __cli();
- gameport_trigger(gameport);
- v = z = gameport_read(gameport);
- do {
- u = v;
- w = u ^ (v = x = gameport_read(gameport));
- for (i = 0; i < 2; i++, w >>= 2, x >>= 2) {
- t[i]--;
- if ((w & 0x30) && s[i]) {
- if ((w & 0x30) < 0x30 && adi[i].ret < ADI_MAX_LENGTH && t[i] > 0) {
- adi[i].data[++adi[i].ret] = w;
- t[i] = gameport_time(gameport, ADI_MAX_STROBE);
- } else t[i] = 0;
- } else if (!(x & 0x30)) s[i] = 1;
- }
- } while (t[0] > 0 || t[1] > 0);
- __restore_flags(flags);
- return;
- }
- /*
- * adi_move_bits() detects a possible 2-stream mode, and moves
- * the bits accordingly.
- */
- static void adi_move_bits(struct adi_port *port, int length)
- {
- int i;
- struct adi *adi = port->adi;
- adi[0].idx = adi[1].idx = 0;
- if (adi[0].ret <= 0 || adi[1].ret <= 0) return;
- if (adi[0].data[0] & 0x20 || ~adi[1].data[0] & 0x20) return;
- for (i = 1; i <= adi[1].ret; i++)
- adi[0].data[((length - 1) >> 1) + i + 1] = adi[1].data[i];
- adi[0].ret += adi[1].ret;
- adi[1].ret = -1;
- }
- /*
- * adi_get_bits() gathers bits from the data packet.
- */
- static inline int adi_get_bits(struct adi *adi, int count)
- {
- int bits = 0;
- int i;
- if ((adi->idx += count) > adi->ret) return 0;
- for (i = 0; i < count; i++)
- bits |= ((adi->data[adi->idx - i] >> 5) & 1) << i;
- return bits;
- }
- /*
- * adi_decode() decodes Logitech joystick data into input events.
- */
- static int adi_decode(struct adi *adi)
- {
- struct input_dev *dev = &adi->dev;
- char *abs = adi->abs;
- short *key = adi->key;
- int i, t;
- if (adi->ret < adi->length || adi->id != (adi_get_bits(adi, 4) | (adi_get_bits(adi, 4) << 4)))
- return -1;
- for (i = 0; i < adi->axes10; i++)
- input_report_abs(dev, *abs++, adi_get_bits(adi, 10));
- for (i = 0; i < adi->axes8; i++)
- input_report_abs(dev, *abs++, adi_get_bits(adi, 8));
- for (i = 0; i < adi->buttons && i < 63; i++) {
- if (i == adi->pad) {
- t = adi_get_bits(adi, 4);
- input_report_abs(dev, *abs++, ((t >> 2) & 1) - ( t & 1));
- input_report_abs(dev, *abs++, ((t >> 1) & 1) - ((t >> 3) & 1));
- }
- input_report_key(dev, *key++, adi_get_bits(adi, 1));
- }
- for (i = 0; i < adi->hats; i++) {
- if ((t = adi_get_bits(adi, 4)) > 8) t = 0;
- input_report_abs(dev, *abs++, adi_hat_to_axis[t].x);
- input_report_abs(dev, *abs++, adi_hat_to_axis[t].y);
- }
- for (i = 63; i < adi->buttons; i++)
- input_report_key(dev, *key++, adi_get_bits(adi, 1));
- return 0;
- }
- /*
- * adi_read() reads the data packet and decodes it.
- */
- static int adi_read(struct adi_port *port)
- {
- int i;
- int result = 0;
- adi_read_packet(port);
- adi_move_bits(port, port->adi[0].length);
- for (i = 0; i < 2; i++)
- if (port->adi[i].length)
- result |= adi_decode(port->adi + i);
- return result;
- }
- /*
- * adi_timer() repeatedly polls the Logitech joysticks.
- */
- static void adi_timer(unsigned long data)
- {
- struct adi_port *port = (void *) data;
- port->bad -= adi_read(port);
- port->reads++;
- mod_timer(&port->timer, jiffies + ADI_REFRESH_TIME);
- }
- /*
- * adi_open() is a callback from the input open routine.
- */
- static int adi_open(struct input_dev *dev)
- {
- struct adi_port *port = dev->private;
- if (!port->used++)
- mod_timer(&port->timer, jiffies + ADI_REFRESH_TIME);
- return 0;
- }
- /*
- * adi_close() is a callback from the input close routine.
- */
- static void adi_close(struct input_dev *dev)
- {
- struct adi_port *port = dev->private;
- if (!--port->used)
- del_timer(&port->timer);
- }
- /*
- * adi_init_digital() sends a trigger & delay sequence
- * to reset and initialize a Logitech joystick into digital mode.
- */
- static void adi_init_digital(struct gameport *gameport)
- {
- int seq[] = { 3, -2, -3, 10, -6, -11, -7, -9, 11, 0 };
- int i;
- for (i = 0; seq[i]; i++) {
- gameport_trigger(gameport);
- if (seq[i] > 0) wait_ms(seq[i]);
- if (seq[i] < 0) mdelay(-seq[i]);
- }
- }
- static void adi_id_decode(struct adi *adi, struct adi_port *port)
- {
- int i, t;
- if (adi->ret < ADI_MIN_ID_LENGTH) /* Minimum ID packet length */
- return;
- if (adi->ret < (t = adi_get_bits(adi, 10))) {
- printk(KERN_WARNING "adi: Short ID packet: reported: %d != read: %dn", t, adi->ret);
- return;
- }
- adi->id = adi_get_bits(adi, 4) | (adi_get_bits(adi, 4) << 4);
- if ((t = adi_get_bits(adi, 4)) & ADI_FLAG_HAT) adi->hats++;
- adi->length = adi_get_bits(adi, 10);
- if (adi->length >= ADI_MAX_LENGTH || adi->length < ADI_MIN_LENGTH) {
- printk(KERN_WARNING "adi: Bad data packet length (%d).n", adi->length);
- adi->length = 0;
- return;
- }
- adi->axes8 = adi_get_bits(adi, 4);
- adi->buttons = adi_get_bits(adi, 6);
- if (adi_get_bits(adi, 6) != 8 && adi->hats) {
- printk(KERN_WARNING "adi: Other than 8-dir POVs not supported yet.n");
- adi->length = 0;
- return;
- }
- adi->buttons += adi_get_bits(adi, 6);
- adi->hats += adi_get_bits(adi, 4);
- i = adi_get_bits(adi, 4);
- if (t & ADI_FLAG_10BIT) {
- adi->axes10 = adi->axes8 - i;
- adi->axes8 = i;
- }
- t = adi_get_bits(adi, 4);
- for (i = 0; i < t; i++)
- adi->cname[i] = adi_get_bits(adi, 8);
- adi->cname[i] = 0;
- t = 8 + adi->buttons + adi->axes10 * 10 + adi->axes8 * 8 + adi->hats * 4;
- if (adi->length != t && adi->length != t + (t & 1)) {
- printk(KERN_WARNING "adi: Expected length %d != data length %dn", t, adi->length);
- adi->length = 0;
- return;
- }
- switch (adi->id) {
- case ADI_ID_TPD:
- adi->pad = 4;
- adi->buttons -= 4;
- break;
- case ADI_ID_WGP:
- adi->pad = 0;
- adi->buttons -= 4;
- break;
- default:
- adi->pad = -1;
- break;
- }
- }
- static void adi_init_input(struct adi *adi, struct adi_port *port)
- {
- int i, t;
- char buf[ADI_MAX_NAME_LENGTH];
- if (!adi->length) return;
- t = adi->id < ADI_ID_MAX ? adi->id : ADI_ID_MAX;
- sprintf(buf, adi_names[t], adi->id);
- sprintf(adi->name, "Logitech %s", buf);
- adi->abs = adi_abs[t];
- adi->key = adi_key[t];
- adi->dev.open = adi_open;
- adi->dev.close = adi_close;
- adi->dev.name = adi->name;
- adi->dev.idbus = BUS_GAMEPORT;
- adi->dev.idvendor = GAMEPORT_ID_VENDOR_LOGITECH;
- adi->dev.idproduct = adi->id;
- adi->dev.idversion = 0x0100;
- adi->dev.private = port;
- adi->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
- for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad > 0)) * 2; i++)
- set_bit(adi->abs[i], &adi->dev.absbit);
- for (i = 0; i < adi->buttons; i++)
- set_bit(adi->key[i], &adi->dev.keybit);
- }
- static void adi_init_center(struct adi *adi)
- {
- int i, t, x;
- if (!adi->length) return;
- for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad > 0)) * 2; i++) {
- t = adi->abs[i];
- x = adi->dev.abs[t];
- if (t == ABS_THROTTLE || t == ABS_RUDDER || adi->id == ADI_ID_WGPE) {
- if (i < adi->axes10) x = 512; else x = 128;
- }
- if (i < adi->axes10) {
- adi->dev.absmax[t] = x * 2 - 64;
- adi->dev.absmin[t] = 64;
- adi->dev.absfuzz[t] = 2;
- adi->dev.absflat[t] = 16;
- continue;
- }
- if (i < adi->axes10 + adi->axes8) {
- adi->dev.absmax[t] = x * 2 - 48;
- adi->dev.absmin[t] = 48;
- adi->dev.absfuzz[t] = 1;
- adi->dev.absflat[t] = 16;
- continue;
- }
- adi->dev.absmax[t] = 1;
- adi->dev.absmin[t] = -1;
- }
- }
- /*
- * adi_connect() probes for Logitech ADI joysticks.
- */
- static void adi_connect(struct gameport *gameport, struct gameport_dev *dev)
- {
- struct adi_port *port;
- int i;
- if (!(port = kmalloc(sizeof(struct adi_port), GFP_KERNEL)))
- return;
- memset(port, 0, sizeof(struct adi_port));
- gameport->private = port;
- port->gameport = gameport;
- init_timer(&port->timer);
- port->timer.data = (long) port;
- port->timer.function = adi_timer;
- if (gameport_open(gameport, dev, GAMEPORT_MODE_RAW)) {
- kfree(port);
- return;
- }
- adi_init_digital(gameport);
- adi_read_packet(port);
-
- if (port->adi[0].ret >= ADI_MIN_LEN_LENGTH)
- adi_move_bits(port, adi_get_bits(port->adi, 10));
- for (i = 0; i < 2; i++) {
- adi_id_decode(port->adi + i, port);
- adi_init_input(port->adi + i, port);
- }
- if (!port->adi[0].length && !port->adi[1].length) {
- gameport_close(gameport);
- kfree(port);
- return;
- }
- wait_ms(ADI_INIT_DELAY);
- if (adi_read(port)) {
- wait_ms(ADI_DATA_DELAY);
- adi_read(port);
- }
- for (i = 0; i < 2; i++)
- if (port->adi[i].length > 0) {
- adi_init_center(port->adi + i);
- input_register_device(&port->adi[i].dev);
- printk(KERN_INFO "input%d: %s [%s] on gameport%d.%dn",
- port->adi[i].dev.number, port->adi[i].name, port->adi[i].cname, gameport->number, i);
- }
- }
- static void adi_disconnect(struct gameport *gameport)
- {
- int i;
- struct adi_port *port = gameport->private;
- for (i = 0; i < 2; i++)
- if (port->adi[i].length > 0)
- input_unregister_device(&port->adi[i].dev);
- gameport_close(gameport);
- kfree(port);
- }
- /*
- * The gameport device structure.
- */
- static struct gameport_dev adi_dev = {
- connect: adi_connect,
- disconnect: adi_disconnect,
- };
- int __init adi_init(void)
- {
- gameport_register_device(&adi_dev);
- return 0;
- }
- void __exit adi_exit(void)
- {
- gameport_unregister_device(&adi_dev);
- }
- module_init(adi_init);
- module_exit(adi_exit);
- MODULE_LICENSE("GPL");