/* * $Id: gf2k.c,v 1.19 2002/01/22 20:27:43 vojtech Exp $ * * Copyright (c) 1998-2001 Vojtech Pavlik */ /* * Genius Flight 2000 joystick 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/slab.h> #include <linux/module.h> #include <linux/init.h> #include <linux/input.h> #include <linux/gameport.h> #include <linux/jiffies.h> #define DRIVER_DESC "Genius Flight 2000 joystick driver" MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); #define GF2K_START 400 /* The time we wait for the first bit [400 us] */ #define GF2K_STROBE 40 /* The time we wait for the first bit [40 us] */ #define GF2K_TIMEOUT 4 /* Wait for everything to settle [4 ms] */ #define GF2K_LENGTH 80 /* Max number of triplets in a packet */ /* * Genius joystick ids ... */ #define GF2K_ID_G09 1 #define GF2K_ID_F30D 2 #define GF2K_ID_F30 3 #define GF2K_ID_F31D 4 #define GF2K_ID_F305 5 #define GF2K_ID_F23P 6 #define GF2K_ID_F31 7 #define GF2K_ID_MAX 7 static char gf2k_length[] = { 40, 40, 40, 40, 40, 40, 40, 40 }; static char gf2k_hat_to_axis[][2] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; static char *gf2k_names[] = {"", "Genius G-09D", "Genius F-30D", "Genius F-30", "Genius MaxFighter F-31D", "Genius F-30-5", "Genius Flight2000 F-23", "Genius F-31"}; static unsigned char gf2k_hats[] = { 0, 2, 0, 0, 2, 0, 2, 0 }; static unsigned char gf2k_axes[] = { 0, 2, 0, 0, 4, 0, 4, 0 }; static unsigned char gf2k_joys[] = { 0, 0, 0, 0,10, 0, 8, 0 }; static unsigned char gf2k_pads[] = { 0, 6, 0, 0, 0, 0, 0, 0 }; static unsigned char gf2k_lens[] = { 0,18, 0, 0,18, 0,18, 0 }; static unsigned char gf2k_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER, ABS_GAS, ABS_BRAKE }; static short gf2k_btn_joy[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4 }; static short gf2k_btn_pad[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_TL2, BTN_TR2, BTN_START, BTN_SELECT }; static short gf2k_seq_reset[] = { 240, 340, 0 }; static short gf2k_seq_digital[] = { 590, 320, 860, 0 }; struct gf2k { struct gameport *gameport; struct input_dev *dev; int reads; int bads; unsigned char id; unsigned char length; char phys[32]; }; /* * gf2k_read_packet() reads a Genius Flight2000 packet. */ static int gf2k_read_packet(struct gameport *gameport, int length, char *data) { unsigned char u, v; int i; unsigned int t, p; unsigned long flags; t = gameport_time(gameport, GF2K_START); p = gameport_time(gameport, GF2K_STROBE); i = 0; local_irq_save(flags); gameport_trigger(gameport); v = gameport_read(gameport); while (t > 0 && i < length) { t--; u = v; v = gameport_read(gameport); if (v & ~u & 0x10) { data[i++] = v >> 5; t = p; } } local_irq_restore(flags); return i; } /* * gf2k_trigger_seq() initializes a Genius Flight2000 joystick * into digital mode. */ static void gf2k_trigger_seq(struct gameport *gameport, short *seq) { unsigned long flags; int i, t; local_irq_save(flags); i = 0; do { gameport_trigger(gameport); t = gameport_time(gameport, GF2K_TIMEOUT * 1000); while ((gameport_read(gameport) & 1) && t) t--; udelay(seq[i]); } while (seq[++i]); gameport_trigger(gameport); local_irq_restore(flags); } /* * js_sw_get_bits() composes bits from the triplet buffer into a __u64. * Parameter 'pos' is bit number inside packet where to start at, 'num' is number * of bits to be read, 'shift' is offset in the resulting __u64 to start at, bits * is number of bits per triplet. */ #define GB(p,n,s) gf2k_get_bits(data, p, n, s) static int gf2k_get_bits(unsigned char *buf, int pos, int num, int shift) { __u64 data = 0; int i; for (i = 0; i < num / 3 + 2; i++) data |= buf[pos / 3 + i] << (i * 3); data >>= pos % 3; data &= (1 << num) - 1; data <<= shift; return data; } static void gf2k_read(struct gf2k *gf2k, unsigned char *data) { struct input_dev *dev = gf2k->dev; int i, t; for (i = 0; i < 4 && i < gf2k_axes[gf2k->id]; i++) input_report_abs(dev, gf2k_abs[i], GB(i<<3,8,0) | GB(i+46,1,8) | GB(i+50,1,9)); for (i = 0; i < 2 && i < gf2k_axes[gf2k->id] - 4; i++) input_report_abs(dev, gf2k_abs[i], GB(i*9+60,8,0) | GB(i+54,1,9)); t = GB(40,4,0); for (i = 0; i < gf2k_hats[gf2k->id]; i++) input_report_abs(dev, ABS_HAT0X + i, gf2k_hat_to_axis[t][i]); t = GB(44,2,0) | GB(32,8,2) | GB(78,2,10); for (i = 0; i < gf2k_joys[gf2k->id]; i++) input_report_key(dev, gf2k_btn_joy[i], (t >> i) & 1); for (i = 0; i < gf2k_pads[gf2k->id]; i++) input_report_key(dev, gf2k_btn_pad[i], (t >> i) & 1); input_sync(dev); } /* * gf2k_poll() reads and analyzes Genius joystick data. */ static void gf2k_poll(struct gameport *gameport) { struct gf2k *gf2k = gameport_get_drvdata(gameport); unsigned char data[GF2K_LENGTH]; gf2k->reads++; if (gf2k_read_packet(gf2k->gameport, gf2k_length[gf2k->id], data) < gf2k_length[gf2k->id]) gf2k->bads++; else gf2k_read(gf2k, data); } static int gf2k_open(struct input_dev *dev) { struct gf2k *gf2k = dev->private; gameport_start_polling(gf2k->gameport); return 0; } static void gf2k_close(struct input_dev *dev) { struct gf2k *gf2k = dev->private; gameport_stop_polling(gf2k->gameport); } /* * gf2k_connect() probes for Genius id joysticks. */ static int gf2k_connect(struct gameport *gameport, struct gameport_driver *drv) { struct gf2k *gf2k; struct input_dev *input_dev; unsigned char data[GF2K_LENGTH]; int i, err; gf2k = kzalloc(sizeof(struct gf2k), GFP_KERNEL); input_dev = input_allocate_device(); if (!gf2k || !input_dev) { err = -ENOMEM; goto fail1; } gf2k->gameport = gameport; gf2k->dev = input_dev; gameport_set_drvdata(gameport, gf2k); err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); if (err) goto fail1; gf2k_trigger_seq(gameport, gf2k_seq_reset); msleep(GF2K_TIMEOUT); gf2k_trigger_seq(gameport, gf2k_seq_digital); msleep(GF2K_TIMEOUT); if (gf2k_read_packet(gameport, GF2K_LENGTH, data) < 12) { err = -ENODEV; goto fail2; } if (!(gf2k->id = GB(7,2,0) | GB(3,3,2) | GB(0,3,5))) { err = -ENODEV; goto fail2; } #ifdef RESET_WORKS if ((gf2k->id != (GB(19,2,0) | GB(15,3,2) | GB(12,3,5))) || (gf2k->id != (GB(31,2,0) | GB(27,3,2) | GB(24,3,5)))) { err = -ENODEV; goto fail2; } #else gf2k->id = 6; #endif if (gf2k->id > GF2K_ID_MAX || !gf2k_axes[gf2k->id]) { printk(KERN_WARNING "gf2k.c: Not yet supported joystick on %s. [id: %d type:%s]\n", gameport->phys, gf2k->id, gf2k->id > GF2K_ID_MAX ? "Unknown" : gf2k_names[gf2k->id]); err = -ENODEV; goto fail2; } gameport_set_poll_handler(gameport, gf2k_poll); gameport_set_poll_interval(gameport, 20); sprintf(gf2k->phys, "%s/input0", gameport->phys); gf2k->length = gf2k_lens[gf2k->id]; input_dev->name = gf2k_names[gf2k->id]; input_dev->phys = gf2k->phys; input_dev->id.bustype = BUS_GAMEPORT; input_dev->id.vendor = GAMEPORT_ID_VENDOR_GENIUS; input_dev->id.product = gf2k->id; input_dev->id.version = 0x0100; input_dev->cdev.dev = &gameport->dev; input_dev->private = gf2k; input_dev->open = gf2k_open; input_dev->close = gf2k_close; input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); for (i = 0; i < gf2k_axes[gf2k->id]; i++) set_bit(gf2k_abs[i], input_dev->absbit); for (i = 0; i < gf2k_hats[gf2k->id]; i++) { set_bit(ABS_HAT0X + i, input_dev->absbit); input_dev->absmin[ABS_HAT0X + i] = -1; input_dev->absmax[ABS_HAT0X + i] = 1; } for (i = 0; i < gf2k_joys[gf2k->id]; i++) set_bit(gf2k_btn_joy[i], input_dev->keybit); for (i = 0; i < gf2k_pads[gf2k->id]; i++) set_bit(gf2k_btn_pad[i], input_dev->keybit); gf2k_read_packet(gameport, gf2k->length, data); gf2k_read(gf2k, data); for (i = 0; i < gf2k_axes[gf2k->id]; i++) { input_dev->absmax[gf2k_abs[i]] = (i < 2) ? input_dev->abs[gf2k_abs[i]] * 2 - 32 : input_dev->abs[gf2k_abs[0]] + input_dev->abs[gf2k_abs[1]] - 32; input_dev->absmin[gf2k_abs[i]] = 32; input_dev->absfuzz[gf2k_abs[i]] = 8; input_dev->absflat[gf2k_abs[i]] = (i < 2) ? 24 : 0; } input_register_device(gf2k->dev); return 0; fail2: gameport_close(gameport); fail1: gameport_set_drvdata(gameport, NULL); input_free_device(input_dev); kfree(gf2k); return err; } static void gf2k_disconnect(struct gameport *gameport) { struct gf2k *gf2k = gameport_get_drvdata(gameport); input_unregister_device(gf2k->dev); gameport_close(gameport); gameport_set_drvdata(gameport, NULL); kfree(gf2k); } static struct gameport_driver gf2k_drv = { .driver = { .name = "gf2k", }, .description = DRIVER_DESC, .connect = gf2k_connect, .disconnect = gf2k_disconnect, }; static int __init gf2k_init(void) { gameport_register_driver(&gf2k_drv); return 0; } static void __exit gf2k_exit(void) { gameport_unregister_driver(&gf2k_drv); } module_init(gf2k_init); module_exit(gf2k_exit);