// SPDX-License-Identifier: GPL-2.0-or-later /* * NES, SNES, N64, MultiSystem, PSX gamepad driver for Linux * * Copyright (c) 1999-2004 Vojtech Pavlik <[email protected]> * Copyright (c) 2004 Peter Nelson <[email protected]> * * Based on the work of: * Andree Borrmann John Dahlstrom * David Kuder Nathan Hand * Raphael Assenat */ #define pr_fmt(fmt) … #include <linux/kernel.h> #include <linux/delay.h> #include <linux/module.h> #include <linux/init.h> #include <linux/parport.h> #include <linux/input.h> #include <linux/mutex.h> #include <linux/slab.h> MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; #define GC_MAX_PORTS … #define GC_MAX_DEVICES … struct gc_config { … }; static struct gc_config gc_cfg[GC_MAX_PORTS]; module_param_array_named(…); MODULE_PARM_DESC(…) …; module_param_array_named(…); MODULE_PARM_DESC(…) …; module_param_array_named(…); MODULE_PARM_DESC(…) …; /* see also gs_psx_delay parameter in PSX support section */ enum gc_type { … }; #define GC_REFRESH_TIME … struct gc_pad { … }; struct gc { … }; struct gc_subdev { … }; static struct gc *gc_base[3]; static const int gc_status_bit[] = …; static const char *gc_names[] = …; /* * N64 support. */ static const unsigned char gc_n64_bytes[] = …; static const short gc_n64_btn[] = …; #define GC_N64_LENGTH … #define GC_N64_STOP_LENGTH … #define GC_N64_CMD_00 … #define GC_N64_CMD_01 … #define GC_N64_CMD_03 … #define GC_N64_CMD_1b … #define GC_N64_CMD_c0 … #define GC_N64_CMD_80 … #define GC_N64_STOP_BIT … #define GC_N64_REQUEST_DATA … #define GC_N64_DELAY … #define GC_N64_DWS … /* GC_N64_DWS > 24 is known to fail */ #define GC_N64_POWER_W … #define GC_N64_POWER_R … #define GC_N64_OUT … /* 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 … /* * Used for rumble code. */ /* Send encoded command */ static void gc_n64_send_command(struct gc *gc, unsigned long cmd, unsigned char target) { … } /* Send stop bit */ static void gc_n64_send_stop_bit(struct gc *gc, unsigned char target) { … } /* * 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) { … } static void gc_n64_process_packet(struct gc *gc) { … } static int gc_n64_play_effect(struct input_dev *dev, void *data, struct ff_effect *effect) { … } static int gc_n64_init_ff(struct input_dev *dev, int i) { … } /* * NES/SNES support. */ #define GC_NES_DELAY … #define GC_NES_LENGTH … #define GC_SNES_LENGTH … #define GC_SNESMOUSE_LENGTH … #define GC_NES_POWER … #define GC_NES_CLOCK … #define GC_NES_LATCH … static const unsigned char gc_nes_bytes[] = …; static const unsigned char gc_snes_bytes[] = …; static const short gc_snes_btn[] = …; /* * 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) { … } static void gc_nes_process_packet(struct gc *gc) { … } /* * Multisystem joystick support */ #define GC_MULTI_LENGTH … #define GC_MULTI2_LENGTH … /* * gc_multi_read_packet() reads a Multisystem joystick packet. */ static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data) { … } static void gc_multi_process_packet(struct gc *gc) { … } /* * PSX support * * See documentation at: * http://www.geocities.co.jp/Playtown/2004/psx/ps_eng.txt * http://www.gamesx.com/controldata/psxcont/psxcont.htm * */ #define GC_PSX_DELAY … #define GC_PSX_LENGTH … #define GC_PSX_BYTES … #define GC_PSX_MOUSE … #define GC_PSX_NEGCON … #define GC_PSX_NORMAL … #define GC_PSX_ANALOG … #define GC_PSX_RUMBLE … #define GC_PSX_CLOCK … #define GC_PSX_COMMAND … #define GC_PSX_POWER … #define GC_PSX_SELECT … #define GC_PSX_ID(x) … #define GC_PSX_LEN(x) … static int gc_psx_delay = …; module_param_named(psx_delay, gc_psx_delay, uint, 0); MODULE_PARM_DESC(…) …; static const short gc_psx_abs[] = …; static const short gc_psx_btn[] = …; static const short gc_psx_ddr_btn[] = …; /* * gc_psx_command() writes 8bit command and reads 8bit data from * the psx pad. */ static void gc_psx_command(struct gc *gc, int b, unsigned char *data) { … } /* * gc_psx_read_packet() reads a whole psx packet and returns * device identifier code. */ static void gc_psx_read_packet(struct gc *gc, unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES], unsigned char id[GC_MAX_DEVICES]) { … } static void gc_psx_report_one(struct gc_pad *pad, unsigned char psx_type, unsigned char *data) { … } static void gc_psx_process_packet(struct gc *gc) { … } /* * gc_timer() initiates reads of console pads data. */ static void gc_timer(struct timer_list *t) { … } static int gc_open(struct input_dev *dev) { … } static void gc_close(struct input_dev *dev) { … } static int gc_setup_pad(struct gc *gc, int idx, int pad_type) { … } static void gc_attach(struct parport *pp) { … } static void gc_detach(struct parport *port) { … } static struct parport_driver gc_parport_driver = …; static int __init gc_init(void) { … } static void __exit gc_exit(void) { … } module_init(…) …; module_exit(gc_exit);
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