gamecon.c
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上传日期:2013-02-24
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文件大小:17k
- /*
- * $Id: gamecon.c,v 1.14 2001/04/29 22:42:14 vojtech Exp $
- *
- * Copyright (c) 1999-2001 Vojtech Pavlik
- *
- * Based on the work of:
- * Andree Borrmann John Dahlstrom
- * David Kuder Nathan Hand
- *
- * Sponsored by SuSE
- */
- /*
- * NES, SNES, N64, Multi1, Multi2, PSX gamepad 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/kernel.h>
- #include <linux/delay.h>
- #include <linux/module.h>
- #include <linux/init.h>
- #include <linux/parport.h>
- #include <linux/input.h>
- MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
- MODULE_LICENSE("GPL");
- MODULE_PARM(gc, "2-6i");
- MODULE_PARM(gc_2,"2-6i");
- MODULE_PARM(gc_3,"2-6i");
- #define GC_SNES 1
- #define GC_NES 2
- #define GC_NES4 3
- #define GC_MULTI 4
- #define GC_MULTI2 5
- #define GC_N64 6
- #define GC_PSX 7
- #define GC_MAX 7
- #define GC_REFRESH_TIME HZ/100
-
- struct gc {
- struct pardevice *pd;
- struct input_dev dev[5];
- struct timer_list timer;
- unsigned char pads[GC_MAX + 1];
- int used;
- };
- static struct gc *gc_base[3];
- static int gc[] __initdata = { -1, 0, 0, 0, 0, 0 };
- static int gc_2[] __initdata = { -1, 0, 0, 0, 0, 0 };
- static int gc_3[] __initdata = { -1, 0, 0, 0, 0, 0 };
- static int gc_status_bit[] = { 0x40, 0x80, 0x20, 0x10, 0x08 };
- static char *gc_names[] = { NULL, "SNES pad", "NES pad", "NES FourPort", "Multisystem joystick",
- "Multisystem 2-button joystick", "N64 controller", "PSX controller" };
- /*
- * N64 support.
- */
- static unsigned char gc_n64_bytes[] = { 0, 1, 13, 15, 14, 12, 10, 11, 2, 3 };
- static short gc_n64_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_TRIGGER, BTN_START };
- #define GC_N64_LENGTH 32 /* N64 bit length, not including stop bit */
- #define GC_N64_REQUEST_LENGTH 37 /* transmit request sequence is 9 bits long */
- #define GC_N64_DELAY 133 /* delay between transmit request, and response ready (us) */
- #define GC_N64_REQUEST 0x1dd1111111ULL /* the request data command (encoded for 000000011) */
- #define GC_N64_DWS 3 /* delay between write segments (required for sound playback because of ISA DMA) */
- /* GC_N64_DWS > 24 is known to fail */
- #define GC_N64_POWER_W 0xe2 /* power during write (transmit request) */
- #define GC_N64_POWER_R 0xfd /* power during read */
- #define GC_N64_OUT 0x1d /* output bits to the 4 pads */
- /* Reading the main axes of any N64 pad is known to fail if the corresponding bit */
- /* in GC_N64_OUT is pulled low on the output port (by any routine) for more */
- /* than 123 us */
- #define GC_N64_CLOCK 0x02 /* clock bits for read */
- /*
- * gc_n64_read_packet() reads an N64 packet.
- * Each pad uses one bit per byte. So all pads connected to this port are read in parallel.
- */
- static void gc_n64_read_packet(struct gc *gc, unsigned char *data)
- {
- int i;
- unsigned long flags;
- /*
- * Request the pad to transmit data
- */
- __save_flags(flags);
- __cli();
- for (i = 0; i < GC_N64_REQUEST_LENGTH; i++) {
- parport_write_data(gc->pd->port, GC_N64_POWER_W | ((GC_N64_REQUEST >> i) & 1 ? GC_N64_OUT : 0));
- udelay(GC_N64_DWS);
- }
- __restore_flags(flags);
- /*
- * Wait for the pad response to be loaded into the 33-bit register of the adapter
- */
- udelay(GC_N64_DELAY);
- /*
- * Grab data (ignoring the last bit, which is a stop bit)
- */
- for (i = 0; i < GC_N64_LENGTH; i++) {
- parport_write_data(gc->pd->port, GC_N64_POWER_R);
- data[i] = parport_read_status(gc->pd->port);
- parport_write_data(gc->pd->port, GC_N64_POWER_R | GC_N64_CLOCK);
- }
- /*
- * We must wait 200 ms here for the controller to reinitialize before the next read request.
- * No worries as long as gc_read is polled less frequently than this.
- */
- }
- /*
- * NES/SNES support.
- */
- #define GC_NES_DELAY 6 /* Delay between bits - 6us */
- #define GC_NES_LENGTH 8 /* The NES pads use 8 bits of data */
- #define GC_SNES_LENGTH 12 /* The SNES true length is 16, but the last 4 bits are unused */
- #define GC_NES_POWER 0xfc
- #define GC_NES_CLOCK 0x01
- #define GC_NES_LATCH 0x02
- static unsigned char gc_nes_bytes[] = { 0, 1, 2, 3 };
- static unsigned char gc_snes_bytes[] = { 8, 0, 2, 3, 9, 1, 10, 11 };
- static short gc_snes_btn[] = { BTN_A, BTN_B, BTN_SELECT, BTN_START, BTN_X, BTN_Y, BTN_TL, BTN_TR };
- /*
- * gc_nes_read_packet() reads a NES/SNES packet.
- * Each pad uses one bit per byte. So all pads connected to
- * this port are read in parallel.
- */
- static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)
- {
- int i;
- parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH);
- udelay(GC_NES_DELAY * 2);
- parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
- for (i = 0; i < length; i++) {
- udelay(GC_NES_DELAY);
- parport_write_data(gc->pd->port, GC_NES_POWER);
- data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
- udelay(GC_NES_DELAY);
- parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
- }
- }
- /*
- * Multisystem joystick support
- */
- #define GC_MULTI_LENGTH 5 /* Multi system joystick packet length is 5 */
- #define GC_MULTI2_LENGTH 6 /* One more bit for one more button */
- /*
- * gc_multi_read_packet() reads a Multisystem joystick packet.
- */
- static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)
- {
- int i;
- for (i = 0; i < length; i++) {
- parport_write_data(gc->pd->port, ~(1 << i));
- data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
- }
- }
- /*
- * PSX support
- *
- * See documentation at:
- * http://www.dim.com/~mackys/psxmemcard/ps-eng2.txt
- * http://www.gamesx.com/controldata/psxcont/psxcont.htm
- * ftp://milano.usal.es/pablo/
- *
- */
- #define GC_PSX_DELAY 60 /* 60 usec */
- #define GC_PSX_LENGTH 8 /* talk to the controller in bytes */
- #define GC_PSX_MOUSE 1 /* Mouse */
- #define GC_PSX_NEGCON 2 /* NegCon */
- #define GC_PSX_NORMAL 4 /* Digital / Analog or Rumble in Digital mode */
- #define GC_PSX_ANALOG 5 /* Analog in Analog mode / Rumble in Green mode */
- #define GC_PSX_RUMBLE 7 /* Rumble in Red mode */
- #define GC_PSX_CLOCK 0x04 /* Pin 4 */
- #define GC_PSX_COMMAND 0x01 /* Pin 1 */
- #define GC_PSX_POWER 0xf8 /* Pins 5-9 */
- #define GC_PSX_SELECT 0x02 /* Pin 3 */
- #define GC_PSX_ID(x) ((x) >> 4) /* High nibble is device type */
- #define GC_PSX_LEN(x) ((x) & 0xf) /* Low nibble is length in words */
- static short gc_psx_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_HAT0X, ABS_HAT0Y };
- static short gc_psx_btn[] = { BTN_TL, BTN_TR, BTN_TL2, BTN_TR2, BTN_A, BTN_B, BTN_X, BTN_Y,
- BTN_START, BTN_SELECT, BTN_THUMBL, BTN_THUMBR };
- /*
- * gc_psx_command() writes 8bit command and reads 8bit data from
- * the psx pad.
- */
- static int gc_psx_command(struct gc *gc, int b)
- {
- int i, cmd, data = 0;
- for (i = 0; i < 8; i++, b >>= 1) {
- cmd = (b & 1) ? GC_PSX_COMMAND : 0;
- parport_write_data(gc->pd->port, cmd | GC_PSX_POWER);
- udelay(GC_PSX_DELAY);
- data |= ((parport_read_status(gc->pd->port) ^ 0x80) & gc->pads[GC_PSX]) ? (1 << i) : 0;
- parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);
- udelay(GC_PSX_DELAY);
- }
- return data;
- }
- /*
- * gc_psx_read_packet() reads a whole psx packet and returns
- * device identifier code.
- */
- static int gc_psx_read_packet(struct gc *gc, unsigned char *data)
- {
- int i, id;
- unsigned long flags;
- parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER); /* Select pad */
- udelay(GC_PSX_DELAY * 2);
- parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER); /* Deselect, begin command */
- udelay(GC_PSX_DELAY * 2);
- __save_flags(flags);
- __cli();
- gc_psx_command(gc, 0x01); /* Access pad */
- id = gc_psx_command(gc, 0x42); /* Get device id */
- if (gc_psx_command(gc, 0) == 0x5a) { /* Okay? */
- for (i = 0; i < GC_PSX_LEN(id) * 2; i++)
- data[i] = gc_psx_command(gc, 0);
- } else id = 0;
- __restore_flags(flags);
- parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);
- return GC_PSX_ID(id);
- }
- /*
- * gc_timer() reads and analyzes console pads data.
- */
- #define GC_MAX_LENGTH GC_N64_LENGTH
- static void gc_timer(unsigned long private)
- {
- struct gc *gc = (void *) private;
- struct input_dev *dev = gc->dev;
- unsigned char data[GC_MAX_LENGTH];
- int i, j, s;
- /*
- * N64 pads - must be read first, any read confuses them for 200 us
- */
- if (gc->pads[GC_N64]) {
- gc_n64_read_packet(gc, data);
- for (i = 0; i < 5; i++) {
- s = gc_status_bit[i];
- if (s & gc->pads[GC_N64] & ~(data[8] | data[9])) {
-
- signed char axes[2];
- axes[0] = axes[1] = 0;
- for (j = 0; j < 8; j++) {
- if (data[23 - j] & s) axes[0] |= 1 << j;
- if (data[31 - j] & s) axes[1] |= 1 << j;
- }
- input_report_abs(dev + i, ABS_X, axes[0]);
- input_report_abs(dev + i, ABS_Y, -axes[1]);
- input_report_abs(dev + i, ABS_HAT0X, !(s & data[6]) - !(s & data[7]));
- input_report_abs(dev + i, ABS_HAT0Y, !(s & data[4]) - !(s & data[5]));
- for (j = 0; j < 10; j++)
- input_report_key(dev + i, gc_n64_btn[j], s & data[gc_n64_bytes[j]]);
- }
- }
- }
- /*
- * NES and SNES pads
- */
- if (gc->pads[GC_NES] || gc->pads[GC_SNES]) {
- gc_nes_read_packet(gc, gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH, data);
- for (i = 0; i < 5; i++) {
- s = gc_status_bit[i];
- if (s & (gc->pads[GC_NES] | gc->pads[GC_SNES])) {
- input_report_abs(dev + i, ABS_X, !(s & data[6]) - !(s & data[7]));
- input_report_abs(dev + i, ABS_Y, !(s & data[4]) - !(s & data[5]));
- }
- if (s & gc->pads[GC_NES])
- for (j = 0; j < 4; j++)
- input_report_key(dev + i, gc_snes_btn[j], s & data[gc_nes_bytes[j]]);
- if (s & gc->pads[GC_SNES])
- for (j = 0; j < 8; j++)
- input_report_key(dev + i, gc_snes_btn[j], s & data[gc_snes_bytes[j]]);
- }
- }
- /*
- * Multi and Multi2 joysticks
- */
- if (gc->pads[GC_MULTI] || gc->pads[GC_MULTI2]) {
- gc_multi_read_packet(gc, gc->pads[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH, data);
- for (i = 0; i < 5; i++) {
- s = gc_status_bit[i];
- if (s & (gc->pads[GC_MULTI] | gc->pads[GC_MULTI2])) {
- input_report_abs(dev + i, ABS_X, !(s & data[2]) - !(s & data[3]));
- input_report_abs(dev + i, ABS_Y, !(s & data[0]) - !(s & data[1]));
- input_report_key(dev + i, BTN_TRIGGER, s & data[4]);
- }
- if (s & gc->pads[GC_MULTI2])
- input_report_key(dev + i, BTN_THUMB, s & data[5]);
- }
- }
- /*
- * PSX controllers
- */
- if (gc->pads[GC_PSX]) {
- for (i = 0; i < 5; i++)
- if (gc->pads[GC_PSX] & gc_status_bit[i])
- break;
- switch (gc_psx_read_packet(gc, data)) {
- case GC_PSX_RUMBLE:
- input_report_key(dev + i, BTN_THUMB, ~data[0] & 0x04);
- input_report_key(dev + i, BTN_THUMB2, ~data[0] & 0x02);
- case GC_PSX_NEGCON:
- case GC_PSX_ANALOG:
- for (j = 0; j < 4; j++)
- input_report_abs(dev + i, gc_psx_abs[j], data[j + 2]);
- input_report_abs(dev + i, ABS_HAT0X, !(data[0] & 0x20) - !(data[0] & 0x80));
- input_report_abs(dev + i, ABS_HAT0Y, !(data[0] & 0x40) - !(data[0] & 0x10));
- for (j = 0; j < 8; j++)
- input_report_key(dev + i, gc_psx_btn[j], ~data[1] & (1 << j));
- input_report_key(dev + i, BTN_START, ~data[0] & 0x08);
- input_report_key(dev + i, BTN_SELECT, ~data[0] & 0x01);
- break;
- case GC_PSX_NORMAL:
- input_report_abs(dev + i, ABS_X, 128 + !(data[0] & 0x20) * 127 - !(data[0] & 0x80) * 128);
- input_report_abs(dev + i, ABS_Y, 128 + !(data[0] & 0x40) * 127 - !(data[0] & 0x10) * 128);
- for (j = 0; j < 8; j++)
- input_report_key(dev + i, gc_psx_btn[j], ~data[1] & (1 << j));
- input_report_key(dev + i, BTN_START, ~data[0] & 0x08);
- input_report_key(dev + i, BTN_SELECT, ~data[0] & 0x01);
- break;
- }
- }
- mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
- }
- static int gc_open(struct input_dev *dev)
- {
- struct gc *gc = dev->private;
- if (!gc->used++) {
- parport_claim(gc->pd);
- parport_write_control(gc->pd->port, 0x04);
- mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
- }
- return 0;
- }
- static void gc_close(struct input_dev *dev)
- {
- struct gc *gc = dev->private;
- if (!--gc->used) {
- del_timer(&gc->timer);
- parport_write_control(gc->pd->port, 0x00);
- parport_release(gc->pd);
- }
- }
- static struct gc __init *gc_probe(int *config)
- {
- struct gc *gc;
- struct parport *pp;
- int i, j, psx;
- unsigned char data[32];
- if (config[0] < 0)
- return NULL;
- for (pp = parport_enumerate(); pp && (config[0] > 0); pp = pp->next)
- config[0]--;
- if (!pp) {
- printk(KERN_ERR "gamecon.c: no such parportn");
- return NULL;
- }
- if (!(gc = kmalloc(sizeof(struct gc), GFP_KERNEL)))
- return NULL;
- memset(gc, 0, sizeof(struct gc));
- gc->pd = parport_register_device(pp, "gamecon", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
- if (!gc->pd) {
- printk(KERN_ERR "gamecon.c: parport busy already - lp.o loaded?n");
- kfree(gc);
- return NULL;
- }
- parport_claim(gc->pd);
- init_timer(&gc->timer);
- gc->timer.data = (long) gc;
- gc->timer.function = gc_timer;
- for (i = 0; i < 5; i++) {
- if (!config[i + 1])
- continue;
- if (config[i + 1] < 1 || config[i + 1] > GC_MAX) {
- printk(KERN_WARNING "gamecon.c: Pad type %d unknownn", config[i + 1]);
- continue;
- }
- gc->dev[i].private = gc;
- gc->dev[i].open = gc_open;
- gc->dev[i].close = gc_close;
- gc->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
- for (j = 0; j < 2; j++) {
- set_bit(ABS_X + j, gc->dev[i].absbit);
- gc->dev[i].absmin[ABS_X + j] = -1;
- gc->dev[i].absmax[ABS_X + j] = 1;
- }
- gc->pads[0] |= gc_status_bit[i];
- gc->pads[config[i + 1]] |= gc_status_bit[i];
- switch(config[i + 1]) {
- case GC_N64:
- for (j = 0; j < 10; j++)
- set_bit(gc_n64_btn[j], gc->dev[i].keybit);
- for (j = 0; j < 2; j++) {
- set_bit(ABS_X + j, gc->dev[i].absbit);
- gc->dev[i].absmin[ABS_X + j] = -127;
- gc->dev[i].absmax[ABS_X + j] = 126;
- gc->dev[i].absflat[ABS_X + j] = 2;
- set_bit(ABS_HAT0X + j, gc->dev[i].absbit);
- gc->dev[i].absmin[ABS_HAT0X + j] = -1;
- gc->dev[i].absmax[ABS_HAT0X + j] = 1;
- }
- break;
- case GC_SNES:
- for (j = 4; j < 8; j++)
- set_bit(gc_snes_btn[j], gc->dev[i].keybit);
- case GC_NES:
- for (j = 0; j < 4; j++)
- set_bit(gc_snes_btn[j], gc->dev[i].keybit);
- break;
- case GC_MULTI2:
- set_bit(BTN_THUMB, gc->dev[i].keybit);
- case GC_MULTI:
- set_bit(BTN_TRIGGER, gc->dev[i].keybit);
- break;
- case GC_PSX:
-
- psx = gc_psx_read_packet(gc, data);
- switch(psx) {
- case GC_PSX_NEGCON:
- case GC_PSX_NORMAL:
- case GC_PSX_ANALOG:
- case GC_PSX_RUMBLE:
- for (j = 0; j < 6; j++) {
- psx = gc_psx_abs[j];
- set_bit(psx, gc->dev[i].absbit);
- if (j < 4) {
- gc->dev[i].absmin[psx] = 4;
- gc->dev[i].absmax[psx] = 252;
- gc->dev[i].absflat[psx] = 2;
- } else {
- gc->dev[i].absmin[psx] = -1;
- gc->dev[i].absmax[psx] = 1;
- }
- }
- for (j = 0; j < 12; j++)
- set_bit(gc_psx_btn[j], gc->dev[i].keybit);
- break;
- case 0:
- gc->pads[GC_PSX] &= ~gc_status_bit[i];
- printk(KERN_ERR "gamecon.c: No PSX controller found.n");
- break;
- default:
- gc->pads[GC_PSX] &= ~gc_status_bit[i];
- printk(KERN_WARNING "gamecon.c: Unsupported PSX controller %#x,"
- " please report to <vojtech@suse.cz>.n", psx);
- }
- break;
- }
- gc->dev[i].name = gc_names[config[i + 1]];
- gc->dev[i].idbus = BUS_PARPORT;
- gc->dev[i].idvendor = 0x0001;
- gc->dev[i].idproduct = config[i + 1];
- gc->dev[i].idversion = 0x0100;
- }
- parport_release(gc->pd);
- if (!gc->pads[0]) {
- parport_unregister_device(gc->pd);
- kfree(gc);
- return NULL;
- }
- for (i = 0; i < 5; i++)
- if (gc->pads[0] & gc_status_bit[i]) {
- input_register_device(gc->dev + i);
- printk(KERN_INFO "input%d: %s on %sn", gc->dev[i].number, gc->dev[i].name, gc->pd->port->name);
- }
- return gc;
- }
- #ifndef MODULE
- int __init gc_setup(char *str)
- {
- int i, ints[7];
- get_options(str, ARRAY_SIZE(ints), ints);
- for (i = 0; i <= ints[0] && i < 6; i++) gc[i] = ints[i + 1];
- return 1;
- }
- int __init gc_setup_2(char *str)
- {
- int i, ints[7];
- get_options(str, ARRAY_SIZE(ints), ints);
- for (i = 0; i <= ints[0] && i < 6; i++) gc_2[i] = ints[i + 1];
- return 1;
- }
- int __init gc_setup_3(char *str)
- {
- int i, ints[7];
- get_options(str, ARRAY_SIZE(ints), ints);
- for (i = 0; i <= ints[0] && i < 6; i++) gc_3[i] = ints[i + 1];
- return 1;
- }
- __setup("gc=", gc_setup);
- __setup("gc_2=", gc_setup_2);
- __setup("gc_3=", gc_setup_3);
- #endif
- int __init gc_init(void)
- {
- gc_base[0] = gc_probe(gc);
- gc_base[1] = gc_probe(gc_2);
- gc_base[2] = gc_probe(gc_3);
- if (gc_base[0] || gc_base[1] || gc_base[2])
- return 0;
- return -ENODEV;
- }
- void __exit gc_exit(void)
- {
- int i, j;
- for (i = 0; i < 3; i++)
- if (gc_base[i]) {
- for (j = 0; j < 5; j++)
- if (gc_base[i]->pads[0] & gc_status_bit[j])
- input_unregister_device(gc_base[i]->dev + j);
- parport_unregister_device(gc_base[i]->pd);
- }
- }
- module_init(gc_init);
- module_exit(gc_exit);