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