/* * Copyright (c) 1998-2005 Vojtech Pavlik */ /* * 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@ucw.cz>, or by paper mail: * Vojtech Pavlik, Simunkova 1594, 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> #include <linux/jiffies.h> #define DRIVER_DESC "Logitech ADI joystick family driver" MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); /* * 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_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 64 #define ADI_MAX_CNAME_LENGTH 16 #define ADI_MAX_PHYS_LENGTH 64 #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]; char phys[ADI_MAX_PHYS_LENGTH]; unsigned char data[ADI_MAX_LENGTH]; }; struct adi_port { struct gameport *gameport; struct adi adi[2]; int bad; int reads; }; /* * 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; } local_irq_save(flags); 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); local_irq_restore(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)); input_sync(dev); 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_poll() repeatedly polls the Logitech joysticks. */ static void adi_poll(struct gameport *gameport) { struct adi_port *port = gameport_get_drvdata(gameport); port->bad -= adi_read(port); port->reads++; } /* * adi_open() is a callback from the input open routine. */ static int adi_open(struct input_dev *dev) { struct adi_port *port = dev->private; gameport_start_polling(port->gameport); 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; gameport_stop_polling(port->gameport); } /* * 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[] = { 4, -2, -3, 10, -6, -11, -7, -9, 11, 0 }; int i; for (i = 0; seq[i]; i++) { gameport_trigger(gameport); if (seq[i] > 0) msleep(seq[i]); if (seq[i] < 0) { mdelay(-seq[i]); udelay(-seq[i]*14); /* It looks like mdelay() is off by approx 1.4% */ } } } 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: %d\n", 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 %d\n", 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 int adi_init_input(struct adi *adi, struct adi_port *port, int half) { struct input_dev *input_dev; char buf[ADI_MAX_NAME_LENGTH]; int i, t; adi->dev = input_dev = input_allocate_device(); if (!input_dev) return -ENOMEM; t = adi->id < ADI_ID_MAX ? adi->id : ADI_ID_MAX; snprintf(buf, ADI_MAX_PHYS_LENGTH, adi_names[t], adi->id); snprintf(adi->name, ADI_MAX_NAME_LENGTH, "Logitech %s [%s]", buf, adi->cname); snprintf(adi->phys, ADI_MAX_PHYS_LENGTH, "%s/input%d", port->gameport->phys, half); adi->abs = adi_abs[t]; adi->key = adi_key[t]; input_dev->name = adi->name; input_dev->phys = adi->phys; input_dev->id.bustype = BUS_GAMEPORT; input_dev->id.vendor = GAMEPORT_ID_VENDOR_LOGITECH; input_dev->id.product = adi->id; input_dev->id.version = 0x0100; input_dev->cdev.dev = &port->gameport->dev; input_dev->private = port; input_dev->open = adi_open; input_dev->close = adi_close; input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad != -1)) * 2; i++) set_bit(adi->abs[i], input_dev->absbit); for (i = 0; i < adi->buttons; i++) set_bit(adi->key[i], input_dev->keybit); return 0; } 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 != -1)) * 2; i++) { t = adi->abs[i]; x = adi->dev->abs[t]; if (t == ABS_THROTTLE || t == ABS_RUDDER || adi->id == ADI_ID_WGPE) x = i < adi->axes10 ? 512 : 128; if (i < adi->axes10) input_set_abs_params(adi->dev, t, 64, x * 2 - 64, 2, 16); else if (i < adi->axes10 + adi->axes8) input_set_abs_params(adi->dev, t, 48, x * 2 - 48, 1, 16); else input_set_abs_params(adi->dev, t, -1, 1, 0, 0); } } /* * adi_connect() probes for Logitech ADI joysticks. */ static int adi_connect(struct gameport *gameport, struct gameport_driver *drv) { struct adi_port *port; int i; int err; port = kzalloc(sizeof(struct adi_port), GFP_KERNEL); if (!port) return -ENOMEM; port->gameport = gameport; gameport_set_drvdata(gameport, port); err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); if (err) goto fail1; 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); if (!port->adi[i].length) continue; err = adi_init_input(port->adi + i, port, i); if (err) goto fail2; } if (!port->adi[0].length && !port->adi[1].length) { err = -ENODEV; goto fail2; } gameport_set_poll_handler(gameport, adi_poll); gameport_set_poll_interval(gameport, 20); msleep(ADI_INIT_DELAY); if (adi_read(port)) { msleep(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); } return 0; fail2: for (i = 0; i < 2; i++) if (port->adi[i].dev) input_free_device(port->adi[i].dev); gameport_close(gameport); fail1: gameport_set_drvdata(gameport, NULL); kfree(port); return err; } static void adi_disconnect(struct gameport *gameport) { int i; struct adi_port *port = gameport_get_drvdata(gameport); for (i = 0; i < 2; i++) if (port->adi[i].length > 0) input_unregister_device(port->adi[i].dev); gameport_close(gameport); gameport_set_drvdata(gameport, NULL); kfree(port); } /* * The gameport device structure. */ static struct gameport_driver adi_drv = { .driver = { .name = "adi", }, .description = DRIVER_DESC, .connect = adi_connect, .disconnect = adi_disconnect, }; static int __init adi_init(void) { gameport_register_driver(&adi_drv); return 0; } static void __exit adi_exit(void) { gameport_unregister_driver(&adi_drv); } module_init(adi_init); module_exit(adi_exit);