1052 lines
24 KiB
C
1052 lines
24 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* NES, SNES, N64, MultiSystem, PSX gamepad driver for Linux
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*
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* Copyright (c) 1999-2004 Vojtech Pavlik <vojtech@suse.cz>
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* Copyright (c) 2004 Peter Nelson <rufus-kernel@hackish.org>
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*
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* Based on the work of:
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* Andree Borrmann John Dahlstrom
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* David Kuder Nathan Hand
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* Raphael Assenat
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/parport.h>
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#include <linux/input.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION("NES, SNES, N64, MultiSystem, PSX gamepad driver");
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MODULE_LICENSE("GPL");
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#define GC_MAX_PORTS 3
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#define GC_MAX_DEVICES 5
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struct gc_config {
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int args[GC_MAX_DEVICES + 1];
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unsigned int nargs;
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};
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static struct gc_config gc_cfg[GC_MAX_PORTS];
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module_param_array_named(map, gc_cfg[0].args, int, &gc_cfg[0].nargs, 0);
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MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<pad1>,<pad2>,..<pad5>)");
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module_param_array_named(map2, gc_cfg[1].args, int, &gc_cfg[1].nargs, 0);
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MODULE_PARM_DESC(map2, "Describes second set of devices");
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module_param_array_named(map3, gc_cfg[2].args, int, &gc_cfg[2].nargs, 0);
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MODULE_PARM_DESC(map3, "Describes third set of devices");
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/* see also gs_psx_delay parameter in PSX support section */
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enum gc_type {
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GC_NONE = 0,
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GC_SNES,
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GC_NES,
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GC_NES4,
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GC_MULTI,
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GC_MULTI2,
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GC_N64,
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GC_PSX,
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GC_DDR,
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GC_SNESMOUSE,
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GC_MAX
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};
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#define GC_REFRESH_TIME HZ/100
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struct gc_pad {
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struct input_dev *dev;
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enum gc_type type;
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char phys[32];
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};
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struct gc {
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struct pardevice *pd;
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struct gc_pad pads[GC_MAX_DEVICES];
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struct timer_list timer;
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int pad_count[GC_MAX];
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int used;
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int parportno;
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struct mutex mutex;
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};
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struct gc_subdev {
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unsigned int idx;
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};
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static struct gc *gc_base[3];
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static const int gc_status_bit[] = { 0x40, 0x80, 0x20, 0x10, 0x08 };
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static const char *gc_names[] = {
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NULL, "SNES pad", "NES pad", "NES FourPort", "Multisystem joystick",
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"Multisystem 2-button joystick", "N64 controller", "PSX controller",
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"PSX DDR controller", "SNES mouse"
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};
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/*
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* N64 support.
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*/
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static const unsigned char gc_n64_bytes[] = { 0, 1, 13, 15, 14, 12, 10, 11, 2, 3 };
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static const short gc_n64_btn[] = {
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BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z,
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BTN_TL, BTN_TR, BTN_TRIGGER, BTN_START
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};
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#define GC_N64_LENGTH 32 /* N64 bit length, not including stop bit */
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#define GC_N64_STOP_LENGTH 5 /* Length of encoded stop bit */
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#define GC_N64_CMD_00 0x11111111UL
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#define GC_N64_CMD_01 0xd1111111UL
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#define GC_N64_CMD_03 0xdd111111UL
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#define GC_N64_CMD_1b 0xdd1dd111UL
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#define GC_N64_CMD_c0 0x111111ddUL
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#define GC_N64_CMD_80 0x1111111dUL
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#define GC_N64_STOP_BIT 0x1d /* Encoded stop bit */
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#define GC_N64_REQUEST_DATA GC_N64_CMD_01 /* the request data command */
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#define GC_N64_DELAY 133 /* delay between transmit request, and response ready (us) */
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#define GC_N64_DWS 3 /* delay between write segments (required for sound playback because of ISA DMA) */
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/* GC_N64_DWS > 24 is known to fail */
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#define GC_N64_POWER_W 0xe2 /* power during write (transmit request) */
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#define GC_N64_POWER_R 0xfd /* power during read */
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#define GC_N64_OUT 0x1d /* output bits to the 4 pads */
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/* Reading the main axes of any N64 pad is known to fail if the corresponding bit */
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/* in GC_N64_OUT is pulled low on the output port (by any routine) for more */
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/* than 123 us */
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#define GC_N64_CLOCK 0x02 /* clock bits for read */
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/*
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* Used for rumble code.
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*/
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/* Send encoded command */
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static void gc_n64_send_command(struct gc *gc, unsigned long cmd,
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unsigned char target)
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{
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struct parport *port = gc->pd->port;
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int i;
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for (i = 0; i < GC_N64_LENGTH; i++) {
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unsigned char data = (cmd >> i) & 1 ? target : 0;
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parport_write_data(port, GC_N64_POWER_W | data);
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udelay(GC_N64_DWS);
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}
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}
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/* Send stop bit */
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static void gc_n64_send_stop_bit(struct gc *gc, unsigned char target)
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{
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struct parport *port = gc->pd->port;
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int i;
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for (i = 0; i < GC_N64_STOP_LENGTH; i++) {
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unsigned char data = (GC_N64_STOP_BIT >> i) & 1 ? target : 0;
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parport_write_data(port, GC_N64_POWER_W | data);
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udelay(GC_N64_DWS);
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}
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}
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/*
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* gc_n64_read_packet() reads an N64 packet.
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* Each pad uses one bit per byte. So all pads connected to this port
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* are read in parallel.
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*/
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static void gc_n64_read_packet(struct gc *gc, unsigned char *data)
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{
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int i;
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unsigned long flags;
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/*
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* Request the pad to transmit data
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*/
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local_irq_save(flags);
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gc_n64_send_command(gc, GC_N64_REQUEST_DATA, GC_N64_OUT);
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gc_n64_send_stop_bit(gc, GC_N64_OUT);
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local_irq_restore(flags);
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/*
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* Wait for the pad response to be loaded into the 33-bit register
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* of the adapter.
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*/
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udelay(GC_N64_DELAY);
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/*
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* Grab data (ignoring the last bit, which is a stop bit)
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*/
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for (i = 0; i < GC_N64_LENGTH; i++) {
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parport_write_data(gc->pd->port, GC_N64_POWER_R);
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udelay(2);
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data[i] = parport_read_status(gc->pd->port);
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parport_write_data(gc->pd->port, GC_N64_POWER_R | GC_N64_CLOCK);
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}
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/*
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* We must wait 200 ms here for the controller to reinitialize before
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* the next read request. No worries as long as gc_read is polled less
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* frequently than this.
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*/
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}
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static void gc_n64_process_packet(struct gc *gc)
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{
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unsigned char data[GC_N64_LENGTH];
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struct input_dev *dev;
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int i, j, s;
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signed char x, y;
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gc_n64_read_packet(gc, data);
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for (i = 0; i < GC_MAX_DEVICES; i++) {
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if (gc->pads[i].type != GC_N64)
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continue;
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dev = gc->pads[i].dev;
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s = gc_status_bit[i];
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if (s & ~(data[8] | data[9])) {
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x = y = 0;
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for (j = 0; j < 8; j++) {
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if (data[23 - j] & s)
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x |= 1 << j;
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if (data[31 - j] & s)
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y |= 1 << j;
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}
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input_report_abs(dev, ABS_X, x);
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input_report_abs(dev, ABS_Y, -y);
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input_report_abs(dev, ABS_HAT0X,
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!(s & data[6]) - !(s & data[7]));
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input_report_abs(dev, ABS_HAT0Y,
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!(s & data[4]) - !(s & data[5]));
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for (j = 0; j < 10; j++)
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input_report_key(dev, gc_n64_btn[j],
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s & data[gc_n64_bytes[j]]);
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input_sync(dev);
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}
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}
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}
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static int gc_n64_play_effect(struct input_dev *dev, void *data,
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struct ff_effect *effect)
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{
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int i;
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unsigned long flags;
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struct gc *gc = input_get_drvdata(dev);
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struct gc_subdev *sdev = data;
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unsigned char target = 1 << sdev->idx; /* select desired pin */
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if (effect->type == FF_RUMBLE) {
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struct ff_rumble_effect *rumble = &effect->u.rumble;
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unsigned int cmd =
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rumble->strong_magnitude || rumble->weak_magnitude ?
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GC_N64_CMD_01 : GC_N64_CMD_00;
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local_irq_save(flags);
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/* Init Rumble - 0x03, 0x80, 0x01, (34)0x80 */
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gc_n64_send_command(gc, GC_N64_CMD_03, target);
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gc_n64_send_command(gc, GC_N64_CMD_80, target);
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gc_n64_send_command(gc, GC_N64_CMD_01, target);
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for (i = 0; i < 32; i++)
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gc_n64_send_command(gc, GC_N64_CMD_80, target);
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gc_n64_send_stop_bit(gc, target);
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udelay(GC_N64_DELAY);
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/* Now start or stop it - 0x03, 0xc0, 0zx1b, (32)0x01/0x00 */
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gc_n64_send_command(gc, GC_N64_CMD_03, target);
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gc_n64_send_command(gc, GC_N64_CMD_c0, target);
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gc_n64_send_command(gc, GC_N64_CMD_1b, target);
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for (i = 0; i < 32; i++)
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gc_n64_send_command(gc, cmd, target);
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gc_n64_send_stop_bit(gc, target);
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local_irq_restore(flags);
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}
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return 0;
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}
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static int gc_n64_init_ff(struct input_dev *dev, int i)
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{
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struct gc_subdev *sdev;
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int err;
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sdev = kmalloc(sizeof(*sdev), GFP_KERNEL);
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if (!sdev)
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return -ENOMEM;
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sdev->idx = i;
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input_set_capability(dev, EV_FF, FF_RUMBLE);
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err = input_ff_create_memless(dev, sdev, gc_n64_play_effect);
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if (err) {
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kfree(sdev);
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return err;
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}
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return 0;
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}
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/*
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* NES/SNES support.
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*/
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#define GC_NES_DELAY 6 /* Delay between bits - 6us */
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#define GC_NES_LENGTH 8 /* The NES pads use 8 bits of data */
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#define GC_SNES_LENGTH 12 /* The SNES true length is 16, but the
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last 4 bits are unused */
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#define GC_SNESMOUSE_LENGTH 32 /* The SNES mouse uses 32 bits, the first
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16 bits are equivalent to a gamepad */
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#define GC_NES_POWER 0xfc
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#define GC_NES_CLOCK 0x01
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#define GC_NES_LATCH 0x02
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static const unsigned char gc_nes_bytes[] = { 0, 1, 2, 3 };
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static const unsigned char gc_snes_bytes[] = { 8, 0, 2, 3, 9, 1, 10, 11 };
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static const short gc_snes_btn[] = {
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BTN_A, BTN_B, BTN_SELECT, BTN_START, BTN_X, BTN_Y, BTN_TL, BTN_TR
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};
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/*
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* gc_nes_read_packet() reads a NES/SNES packet.
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* Each pad uses one bit per byte. So all pads connected to
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* this port are read in parallel.
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*/
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static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)
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{
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int i;
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parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH);
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udelay(GC_NES_DELAY * 2);
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parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
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for (i = 0; i < length; i++) {
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udelay(GC_NES_DELAY);
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parport_write_data(gc->pd->port, GC_NES_POWER);
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data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
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udelay(GC_NES_DELAY);
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parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
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}
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}
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static void gc_nes_process_packet(struct gc *gc)
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{
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unsigned char data[GC_SNESMOUSE_LENGTH];
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struct gc_pad *pad;
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struct input_dev *dev;
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int i, j, s, len;
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char x_rel, y_rel;
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len = gc->pad_count[GC_SNESMOUSE] ? GC_SNESMOUSE_LENGTH :
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(gc->pad_count[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH);
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gc_nes_read_packet(gc, len, data);
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for (i = 0; i < GC_MAX_DEVICES; i++) {
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pad = &gc->pads[i];
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dev = pad->dev;
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s = gc_status_bit[i];
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switch (pad->type) {
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case GC_NES:
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input_report_abs(dev, ABS_X, !(s & data[6]) - !(s & data[7]));
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input_report_abs(dev, ABS_Y, !(s & data[4]) - !(s & data[5]));
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for (j = 0; j < 4; j++)
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input_report_key(dev, gc_snes_btn[j],
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s & data[gc_nes_bytes[j]]);
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input_sync(dev);
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break;
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case GC_SNES:
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input_report_abs(dev, ABS_X, !(s & data[6]) - !(s & data[7]));
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input_report_abs(dev, ABS_Y, !(s & data[4]) - !(s & data[5]));
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for (j = 0; j < 8; j++)
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input_report_key(dev, gc_snes_btn[j],
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s & data[gc_snes_bytes[j]]);
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input_sync(dev);
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break;
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case GC_SNESMOUSE:
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/*
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* The 4 unused bits from SNES controllers appear
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* to be ID bits so use them to make sure we are
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* dealing with a mouse.
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* gamepad is connected. This is important since
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* my SNES gamepad sends 1's for bits 16-31, which
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* cause the mouse pointer to quickly move to the
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* upper left corner of the screen.
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*/
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if (!(s & data[12]) && !(s & data[13]) &&
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!(s & data[14]) && (s & data[15])) {
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input_report_key(dev, BTN_LEFT, s & data[9]);
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input_report_key(dev, BTN_RIGHT, s & data[8]);
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x_rel = y_rel = 0;
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for (j = 0; j < 7; j++) {
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x_rel <<= 1;
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if (data[25 + j] & s)
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x_rel |= 1;
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y_rel <<= 1;
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if (data[17 + j] & s)
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y_rel |= 1;
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}
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if (x_rel) {
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if (data[24] & s)
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x_rel = -x_rel;
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input_report_rel(dev, REL_X, x_rel);
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}
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if (y_rel) {
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if (data[16] & s)
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y_rel = -y_rel;
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input_report_rel(dev, REL_Y, y_rel);
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}
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input_sync(dev);
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}
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break;
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default:
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break;
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}
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}
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}
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/*
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* Multisystem joystick support
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*/
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#define GC_MULTI_LENGTH 5 /* Multi system joystick packet length is 5 */
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#define GC_MULTI2_LENGTH 6 /* One more bit for one more button */
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/*
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* gc_multi_read_packet() reads a Multisystem joystick packet.
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*/
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static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)
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{
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int i;
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for (i = 0; i < length; i++) {
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parport_write_data(gc->pd->port, ~(1 << i));
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data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
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}
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}
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static void gc_multi_process_packet(struct gc *gc)
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{
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unsigned char data[GC_MULTI2_LENGTH];
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int data_len = gc->pad_count[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH;
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struct gc_pad *pad;
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struct input_dev *dev;
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int i, s;
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gc_multi_read_packet(gc, data_len, data);
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for (i = 0; i < GC_MAX_DEVICES; i++) {
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pad = &gc->pads[i];
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dev = pad->dev;
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s = gc_status_bit[i];
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switch (pad->type) {
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case GC_MULTI2:
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input_report_key(dev, BTN_THUMB, s & data[5]);
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fallthrough;
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case GC_MULTI:
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input_report_abs(dev, ABS_X,
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!(s & data[2]) - !(s & data[3]));
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input_report_abs(dev, ABS_Y,
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!(s & data[0]) - !(s & data[1]));
|
|
input_report_key(dev, BTN_TRIGGER, s & data[4]);
|
|
input_sync(dev);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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 25 /* 25 usec */
|
|
#define GC_PSX_LENGTH 8 /* talk to the controller in bits */
|
|
#define GC_PSX_BYTES 6 /* the maximum number of bytes to read off the controller */
|
|
|
|
#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 2 */
|
|
#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) << 1) /* Low nibble is length in bytes/2 */
|
|
|
|
static int gc_psx_delay = GC_PSX_DELAY;
|
|
module_param_named(psx_delay, gc_psx_delay, uint, 0);
|
|
MODULE_PARM_DESC(psx_delay, "Delay when accessing Sony PSX controller (usecs)");
|
|
|
|
static const short gc_psx_abs[] = {
|
|
ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_HAT0X, ABS_HAT0Y
|
|
};
|
|
static const 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
|
|
};
|
|
static const short gc_psx_ddr_btn[] = { BTN_0, BTN_1, BTN_2, BTN_3 };
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
struct parport *port = gc->pd->port;
|
|
int i, j, cmd, read;
|
|
|
|
memset(data, 0, GC_MAX_DEVICES);
|
|
|
|
for (i = 0; i < GC_PSX_LENGTH; i++, b >>= 1) {
|
|
cmd = (b & 1) ? GC_PSX_COMMAND : 0;
|
|
parport_write_data(port, cmd | GC_PSX_POWER);
|
|
udelay(gc_psx_delay);
|
|
|
|
read = parport_read_status(port) ^ 0x80;
|
|
|
|
for (j = 0; j < GC_MAX_DEVICES; j++) {
|
|
struct gc_pad *pad = &gc->pads[j];
|
|
|
|
if (pad->type == GC_PSX || pad->type == GC_DDR)
|
|
data[j] |= (read & gc_status_bit[j]) ? (1 << i) : 0;
|
|
}
|
|
|
|
parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);
|
|
udelay(gc_psx_delay);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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])
|
|
{
|
|
int i, j, max_len = 0;
|
|
unsigned long flags;
|
|
unsigned char data2[GC_MAX_DEVICES];
|
|
|
|
/* Select pad */
|
|
parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);
|
|
udelay(gc_psx_delay);
|
|
/* Deselect, begin command */
|
|
parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER);
|
|
udelay(gc_psx_delay);
|
|
|
|
local_irq_save(flags);
|
|
|
|
gc_psx_command(gc, 0x01, data2); /* Access pad */
|
|
gc_psx_command(gc, 0x42, id); /* Get device ids */
|
|
gc_psx_command(gc, 0, data2); /* Dump status */
|
|
|
|
/* Find the longest pad */
|
|
for (i = 0; i < GC_MAX_DEVICES; i++) {
|
|
struct gc_pad *pad = &gc->pads[i];
|
|
|
|
if ((pad->type == GC_PSX || pad->type == GC_DDR) &&
|
|
GC_PSX_LEN(id[i]) > max_len &&
|
|
GC_PSX_LEN(id[i]) <= GC_PSX_BYTES) {
|
|
max_len = GC_PSX_LEN(id[i]);
|
|
}
|
|
}
|
|
|
|
/* Read in all the data */
|
|
for (i = 0; i < max_len; i++) {
|
|
gc_psx_command(gc, 0, data2);
|
|
for (j = 0; j < GC_MAX_DEVICES; j++)
|
|
data[j][i] = data2[j];
|
|
}
|
|
|
|
local_irq_restore(flags);
|
|
|
|
parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);
|
|
|
|
/* Set id's to the real value */
|
|
for (i = 0; i < GC_MAX_DEVICES; i++)
|
|
id[i] = GC_PSX_ID(id[i]);
|
|
}
|
|
|
|
static void gc_psx_report_one(struct gc_pad *pad, unsigned char psx_type,
|
|
unsigned char *data)
|
|
{
|
|
struct input_dev *dev = pad->dev;
|
|
int i;
|
|
|
|
switch (psx_type) {
|
|
|
|
case GC_PSX_RUMBLE:
|
|
|
|
input_report_key(dev, BTN_THUMBL, ~data[0] & 0x04);
|
|
input_report_key(dev, BTN_THUMBR, ~data[0] & 0x02);
|
|
fallthrough;
|
|
|
|
case GC_PSX_NEGCON:
|
|
case GC_PSX_ANALOG:
|
|
|
|
if (pad->type == GC_DDR) {
|
|
for (i = 0; i < 4; i++)
|
|
input_report_key(dev, gc_psx_ddr_btn[i],
|
|
~data[0] & (0x10 << i));
|
|
} else {
|
|
for (i = 0; i < 4; i++)
|
|
input_report_abs(dev, gc_psx_abs[i + 2],
|
|
data[i + 2]);
|
|
|
|
input_report_abs(dev, ABS_X,
|
|
!!(data[0] & 0x80) * 128 + !(data[0] & 0x20) * 127);
|
|
input_report_abs(dev, ABS_Y,
|
|
!!(data[0] & 0x10) * 128 + !(data[0] & 0x40) * 127);
|
|
}
|
|
|
|
for (i = 0; i < 8; i++)
|
|
input_report_key(dev, gc_psx_btn[i], ~data[1] & (1 << i));
|
|
|
|
input_report_key(dev, BTN_START, ~data[0] & 0x08);
|
|
input_report_key(dev, BTN_SELECT, ~data[0] & 0x01);
|
|
|
|
input_sync(dev);
|
|
|
|
break;
|
|
|
|
case GC_PSX_NORMAL:
|
|
|
|
if (pad->type == GC_DDR) {
|
|
for (i = 0; i < 4; i++)
|
|
input_report_key(dev, gc_psx_ddr_btn[i],
|
|
~data[0] & (0x10 << i));
|
|
} else {
|
|
input_report_abs(dev, ABS_X,
|
|
!!(data[0] & 0x80) * 128 + !(data[0] & 0x20) * 127);
|
|
input_report_abs(dev, ABS_Y,
|
|
!!(data[0] & 0x10) * 128 + !(data[0] & 0x40) * 127);
|
|
|
|
/*
|
|
* For some reason if the extra axes are left unset
|
|
* they drift.
|
|
* for (i = 0; i < 4; i++)
|
|
input_report_abs(dev, gc_psx_abs[i + 2], 128);
|
|
* This needs to be debugged properly,
|
|
* maybe fuzz processing needs to be done
|
|
* in input_sync()
|
|
* --vojtech
|
|
*/
|
|
}
|
|
|
|
for (i = 0; i < 8; i++)
|
|
input_report_key(dev, gc_psx_btn[i], ~data[1] & (1 << i));
|
|
|
|
input_report_key(dev, BTN_START, ~data[0] & 0x08);
|
|
input_report_key(dev, BTN_SELECT, ~data[0] & 0x01);
|
|
|
|
input_sync(dev);
|
|
|
|
break;
|
|
|
|
default: /* not a pad, ignore */
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void gc_psx_process_packet(struct gc *gc)
|
|
{
|
|
unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES];
|
|
unsigned char id[GC_MAX_DEVICES];
|
|
struct gc_pad *pad;
|
|
int i;
|
|
|
|
gc_psx_read_packet(gc, data, id);
|
|
|
|
for (i = 0; i < GC_MAX_DEVICES; i++) {
|
|
pad = &gc->pads[i];
|
|
if (pad->type == GC_PSX || pad->type == GC_DDR)
|
|
gc_psx_report_one(pad, id[i], data[i]);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* gc_timer() initiates reads of console pads data.
|
|
*/
|
|
|
|
static void gc_timer(struct timer_list *t)
|
|
{
|
|
struct gc *gc = from_timer(gc, t, timer);
|
|
|
|
/*
|
|
* N64 pads - must be read first, any read confuses them for 200 us
|
|
*/
|
|
|
|
if (gc->pad_count[GC_N64])
|
|
gc_n64_process_packet(gc);
|
|
|
|
/*
|
|
* NES and SNES pads or mouse
|
|
*/
|
|
|
|
if (gc->pad_count[GC_NES] ||
|
|
gc->pad_count[GC_SNES] ||
|
|
gc->pad_count[GC_SNESMOUSE]) {
|
|
gc_nes_process_packet(gc);
|
|
}
|
|
|
|
/*
|
|
* Multi and Multi2 joysticks
|
|
*/
|
|
|
|
if (gc->pad_count[GC_MULTI] || gc->pad_count[GC_MULTI2])
|
|
gc_multi_process_packet(gc);
|
|
|
|
/*
|
|
* PSX controllers
|
|
*/
|
|
|
|
if (gc->pad_count[GC_PSX] || gc->pad_count[GC_DDR])
|
|
gc_psx_process_packet(gc);
|
|
|
|
mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
|
|
}
|
|
|
|
static int gc_open(struct input_dev *dev)
|
|
{
|
|
struct gc *gc = input_get_drvdata(dev);
|
|
int err;
|
|
|
|
err = mutex_lock_interruptible(&gc->mutex);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!gc->used++) {
|
|
parport_claim(gc->pd);
|
|
parport_write_control(gc->pd->port, 0x04);
|
|
mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
|
|
}
|
|
|
|
mutex_unlock(&gc->mutex);
|
|
return 0;
|
|
}
|
|
|
|
static void gc_close(struct input_dev *dev)
|
|
{
|
|
struct gc *gc = input_get_drvdata(dev);
|
|
|
|
mutex_lock(&gc->mutex);
|
|
if (!--gc->used) {
|
|
del_timer_sync(&gc->timer);
|
|
parport_write_control(gc->pd->port, 0x00);
|
|
parport_release(gc->pd);
|
|
}
|
|
mutex_unlock(&gc->mutex);
|
|
}
|
|
|
|
static int gc_setup_pad(struct gc *gc, int idx, int pad_type)
|
|
{
|
|
struct gc_pad *pad = &gc->pads[idx];
|
|
struct input_dev *input_dev;
|
|
int i;
|
|
int err;
|
|
|
|
if (pad_type < 1 || pad_type >= GC_MAX) {
|
|
pr_err("Pad type %d unknown\n", pad_type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
pad->dev = input_dev = input_allocate_device();
|
|
if (!input_dev) {
|
|
pr_err("Not enough memory for input device\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
pad->type = pad_type;
|
|
|
|
snprintf(pad->phys, sizeof(pad->phys),
|
|
"%s/input%d", gc->pd->port->name, idx);
|
|
|
|
input_dev->name = gc_names[pad_type];
|
|
input_dev->phys = pad->phys;
|
|
input_dev->id.bustype = BUS_PARPORT;
|
|
input_dev->id.vendor = 0x0001;
|
|
input_dev->id.product = pad_type;
|
|
input_dev->id.version = 0x0100;
|
|
|
|
input_set_drvdata(input_dev, gc);
|
|
|
|
input_dev->open = gc_open;
|
|
input_dev->close = gc_close;
|
|
|
|
if (pad_type != GC_SNESMOUSE) {
|
|
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
|
|
|
|
for (i = 0; i < 2; i++)
|
|
input_set_abs_params(input_dev, ABS_X + i, -1, 1, 0, 0);
|
|
} else
|
|
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
|
|
|
|
gc->pad_count[pad_type]++;
|
|
|
|
switch (pad_type) {
|
|
|
|
case GC_N64:
|
|
for (i = 0; i < 10; i++)
|
|
input_set_capability(input_dev, EV_KEY, gc_n64_btn[i]);
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
input_set_abs_params(input_dev, ABS_X + i, -127, 126, 0, 2);
|
|
input_set_abs_params(input_dev, ABS_HAT0X + i, -1, 1, 0, 0);
|
|
}
|
|
|
|
err = gc_n64_init_ff(input_dev, idx);
|
|
if (err) {
|
|
pr_warn("Failed to initiate rumble for N64 device %d\n",
|
|
idx);
|
|
goto err_free_dev;
|
|
}
|
|
|
|
break;
|
|
|
|
case GC_SNESMOUSE:
|
|
input_set_capability(input_dev, EV_KEY, BTN_LEFT);
|
|
input_set_capability(input_dev, EV_KEY, BTN_RIGHT);
|
|
input_set_capability(input_dev, EV_REL, REL_X);
|
|
input_set_capability(input_dev, EV_REL, REL_Y);
|
|
break;
|
|
|
|
case GC_SNES:
|
|
for (i = 4; i < 8; i++)
|
|
input_set_capability(input_dev, EV_KEY, gc_snes_btn[i]);
|
|
fallthrough;
|
|
|
|
case GC_NES:
|
|
for (i = 0; i < 4; i++)
|
|
input_set_capability(input_dev, EV_KEY, gc_snes_btn[i]);
|
|
break;
|
|
|
|
case GC_MULTI2:
|
|
input_set_capability(input_dev, EV_KEY, BTN_THUMB);
|
|
fallthrough;
|
|
|
|
case GC_MULTI:
|
|
input_set_capability(input_dev, EV_KEY, BTN_TRIGGER);
|
|
break;
|
|
|
|
case GC_PSX:
|
|
for (i = 0; i < 6; i++)
|
|
input_set_abs_params(input_dev,
|
|
gc_psx_abs[i], 4, 252, 0, 2);
|
|
for (i = 0; i < 12; i++)
|
|
input_set_capability(input_dev, EV_KEY, gc_psx_btn[i]);
|
|
break;
|
|
|
|
break;
|
|
|
|
case GC_DDR:
|
|
for (i = 0; i < 4; i++)
|
|
input_set_capability(input_dev, EV_KEY,
|
|
gc_psx_ddr_btn[i]);
|
|
for (i = 0; i < 12; i++)
|
|
input_set_capability(input_dev, EV_KEY, gc_psx_btn[i]);
|
|
|
|
break;
|
|
}
|
|
|
|
err = input_register_device(pad->dev);
|
|
if (err)
|
|
goto err_free_dev;
|
|
|
|
return 0;
|
|
|
|
err_free_dev:
|
|
input_free_device(pad->dev);
|
|
pad->dev = NULL;
|
|
return err;
|
|
}
|
|
|
|
static void gc_attach(struct parport *pp)
|
|
{
|
|
struct gc *gc;
|
|
struct pardevice *pd;
|
|
int i, port_idx;
|
|
int count = 0;
|
|
int *pads, n_pads;
|
|
struct pardev_cb gc_parport_cb;
|
|
|
|
for (port_idx = 0; port_idx < GC_MAX_PORTS; port_idx++) {
|
|
if (gc_cfg[port_idx].nargs == 0 || gc_cfg[port_idx].args[0] < 0)
|
|
continue;
|
|
|
|
if (gc_cfg[port_idx].args[0] == pp->number)
|
|
break;
|
|
}
|
|
|
|
if (port_idx == GC_MAX_PORTS) {
|
|
pr_debug("Not using parport%d.\n", pp->number);
|
|
return;
|
|
}
|
|
pads = gc_cfg[port_idx].args + 1;
|
|
n_pads = gc_cfg[port_idx].nargs - 1;
|
|
|
|
memset(&gc_parport_cb, 0, sizeof(gc_parport_cb));
|
|
gc_parport_cb.flags = PARPORT_FLAG_EXCL;
|
|
|
|
pd = parport_register_dev_model(pp, "gamecon", &gc_parport_cb,
|
|
port_idx);
|
|
if (!pd) {
|
|
pr_err("parport busy already - lp.o loaded?\n");
|
|
return;
|
|
}
|
|
|
|
gc = kzalloc(sizeof(struct gc), GFP_KERNEL);
|
|
if (!gc) {
|
|
pr_err("Not enough memory\n");
|
|
goto err_unreg_pardev;
|
|
}
|
|
|
|
mutex_init(&gc->mutex);
|
|
gc->pd = pd;
|
|
gc->parportno = pp->number;
|
|
timer_setup(&gc->timer, gc_timer, 0);
|
|
|
|
for (i = 0; i < n_pads && i < GC_MAX_DEVICES; i++) {
|
|
if (!pads[i])
|
|
continue;
|
|
|
|
if (gc_setup_pad(gc, i, pads[i]))
|
|
goto err_unreg_devs;
|
|
|
|
count++;
|
|
}
|
|
|
|
if (count == 0) {
|
|
pr_err("No valid devices specified\n");
|
|
goto err_free_gc;
|
|
}
|
|
|
|
gc_base[port_idx] = gc;
|
|
return;
|
|
|
|
err_unreg_devs:
|
|
while (--i >= 0)
|
|
if (gc->pads[i].dev)
|
|
input_unregister_device(gc->pads[i].dev);
|
|
err_free_gc:
|
|
kfree(gc);
|
|
err_unreg_pardev:
|
|
parport_unregister_device(pd);
|
|
}
|
|
|
|
static void gc_detach(struct parport *port)
|
|
{
|
|
int i;
|
|
struct gc *gc;
|
|
|
|
for (i = 0; i < GC_MAX_PORTS; i++) {
|
|
if (gc_base[i] && gc_base[i]->parportno == port->number)
|
|
break;
|
|
}
|
|
|
|
if (i == GC_MAX_PORTS)
|
|
return;
|
|
|
|
gc = gc_base[i];
|
|
gc_base[i] = NULL;
|
|
|
|
for (i = 0; i < GC_MAX_DEVICES; i++)
|
|
if (gc->pads[i].dev)
|
|
input_unregister_device(gc->pads[i].dev);
|
|
parport_unregister_device(gc->pd);
|
|
kfree(gc);
|
|
}
|
|
|
|
static struct parport_driver gc_parport_driver = {
|
|
.name = "gamecon",
|
|
.match_port = gc_attach,
|
|
.detach = gc_detach,
|
|
.devmodel = true,
|
|
};
|
|
|
|
static int __init gc_init(void)
|
|
{
|
|
int i;
|
|
int have_dev = 0;
|
|
|
|
for (i = 0; i < GC_MAX_PORTS; i++) {
|
|
if (gc_cfg[i].nargs == 0 || gc_cfg[i].args[0] < 0)
|
|
continue;
|
|
|
|
if (gc_cfg[i].nargs < 2) {
|
|
pr_err("at least one device must be specified\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
have_dev = 1;
|
|
}
|
|
|
|
if (!have_dev)
|
|
return -ENODEV;
|
|
|
|
return parport_register_driver(&gc_parport_driver);
|
|
}
|
|
|
|
static void __exit gc_exit(void)
|
|
{
|
|
parport_unregister_driver(&gc_parport_driver);
|
|
}
|
|
|
|
module_init(gc_init);
|
|
module_exit(gc_exit);
|