1 files changed, 697 insertions, 0 deletions

diff --git a/drivers/input/joystick/gamecon.c b/drivers/input/joystick/gamecon.c
new file mode 100644
index 000000000000..8732f52bdd08
--- /dev/null
+++ b/drivers/input/joystick/gamecon.c
@@ -0,0 +1,697 @@
+/*
+ * NES, SNES, N64, MultiSystem, PSX gamepad driver for Linux
+ *
+ *  Copyright (c) 1999-2004 	Vojtech Pavlik <vojtech@suse.cz>
+ *  Copyright (c) 2004 		Peter Nelson <rufus-kernel@hackish.org>
+ *
+ *  Based on the work of:
+ *  	Andree Borrmann		John Dahlstrom
+ *  	David Kuder		Nathan Hand
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
+ * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/parport.h>
+#include <linux/input.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION("NES, SNES, N64, MultiSystem, PSX gamepad driver");
+MODULE_LICENSE("GPL");
+
+static int gc[] __initdata = { -1, 0, 0, 0, 0, 0 };
+static int gc_nargs __initdata = 0;
+module_param_array_named(map, gc, int, &gc_nargs, 0);
+MODULE_PARM_DESC(map, "Describers first set of devices (<parport#>,<pad1>,<pad2>,..<pad5>)");
+
+static int gc_2[] __initdata = { -1, 0, 0, 0, 0, 0 };
+static int gc_nargs_2 __initdata = 0;
+module_param_array_named(map2, gc_2, int, &gc_nargs_2, 0);
+MODULE_PARM_DESC(map2, "Describers second set of devices");
+
+static int gc_3[] __initdata = { -1, 0, 0, 0, 0, 0 };
+static int gc_nargs_3 __initdata = 0;
+module_param_array_named(map3, gc_3, int, &gc_nargs_3, 0);
+MODULE_PARM_DESC(map3, "Describers third set of devices");
+
+__obsolete_setup("gc=");
+__obsolete_setup("gc_2=");
+__obsolete_setup("gc_3=");
+
+/* see also gs_psx_delay parameter in PSX support section */
+
+#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_DDR		8
+
+#define GC_MAX		8
+
+#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;
+	char phys[5][32];
+};
+
+static struct gc *gc_base[3];
+
+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",
+				"PSX DDR 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
+ */
+
+	local_irq_save(flags);
+	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);
+	}
+	local_irq_restore(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	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)");
+
+__obsolete_setup("gc_psx_delay=");
+
+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 };
+static 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[5])
+{
+	int i, j, cmd, read;
+	for (i = 0; i < 5; i++)
+		data[i] = 0;
+
+	for (i = 0; i < GC_PSX_LENGTH; i++, b >>= 1) {
+		cmd = (b & 1) ? GC_PSX_COMMAND : 0;
+		parport_write_data(gc->pd->port, cmd | GC_PSX_POWER);
+		udelay(gc_psx_delay);
+		read = parport_read_status(gc->pd->port) ^ 0x80;
+		for (j = 0; j < 5; j++)
+			data[j] |= (read & gc_status_bit[j] & (gc->pads[GC_PSX] | gc->pads[GC_DDR])) ? (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[5][GC_PSX_BYTES], unsigned char id[5])
+{
+	int i, j, max_len = 0;
+	unsigned long flags;
+	unsigned char data2[5];
+
+	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);	/* Select pad */
+	udelay(gc_psx_delay);
+	parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER);			/* Deselect, begin command */
+	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 */
+
+	for (i =0; i < 5; i++)								/* Find the longest pad */
+		if((gc_status_bit[i] & (gc->pads[GC_PSX] | gc->pads[GC_DDR]))
+			&& (GC_PSX_LEN(id[i]) > max_len)
+			&& (GC_PSX_LEN(id[i]) <= GC_PSX_BYTES))
+			max_len = GC_PSX_LEN(id[i]);
+
+	for (i = 0; i < max_len; i++) {						/* Read in all the data */
+		gc_psx_command(gc, 0, data2);
+		for (j = 0; j < 5; 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);
+
+	for(i = 0; i < 5; i++)								/* Set id's to the real value */
+		id[i] = GC_PSX_ID(id[i]);
+}
+
+/*
+ * 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];
+	unsigned char data_psx[5][GC_PSX_BYTES];
+	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]]);
+
+				input_sync(dev + i);
+			}
+		}
+	}
+
+/*
+ * 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]]);
+
+			input_sync(dev + i);
+		}
+	}
+
+/*
+ * 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]);
+
+			input_sync(dev + i);
+		}
+	}
+
+/*
+ * PSX controllers
+ */
+
+	if (gc->pads[GC_PSX] || gc->pads[GC_DDR]) {
+
+		gc_psx_read_packet(gc, data_psx, data);
+
+		for (i = 0; i < 5; i++) {
+	 		switch (data[i]) {
+
+				case GC_PSX_RUMBLE:
+
+					input_report_key(dev + i, BTN_THUMBL, ~data_psx[i][0] & 0x04);
+					input_report_key(dev + i, BTN_THUMBR, ~data_psx[i][0] & 0x02);
+
+				case GC_PSX_NEGCON:
+				case GC_PSX_ANALOG:
+
+					if(gc->pads[GC_DDR] & gc_status_bit[i]) {
+						for(j = 0; j < 4; j++)
+							input_report_key(dev + i, gc_psx_ddr_btn[j], ~data_psx[i][0] & (0x10 << j));
+					} else {
+						for (j = 0; j < 4; j++)
+							input_report_abs(dev + i, gc_psx_abs[j+2], data_psx[i][j + 2]);
+
+						input_report_abs(dev + i, ABS_X, 128 + !(data_psx[i][0] & 0x20) * 127 - !(data_psx[i][0] & 0x80) * 128);
+						input_report_abs(dev + i, ABS_Y, 128 + !(data_psx[i][0] & 0x40) * 127 - !(data_psx[i][0] & 0x10) * 128);
+					}
+
+					for (j = 0; j < 8; j++)
+						input_report_key(dev + i, gc_psx_btn[j], ~data_psx[i][1] & (1 << j));
+
+					input_report_key(dev + i, BTN_START,  ~data_psx[i][0] & 0x08);
+					input_report_key(dev + i, BTN_SELECT, ~data_psx[i][0] & 0x01);
+
+					input_sync(dev + i);
+
+					break;
+
+				case GC_PSX_NORMAL:
+					if(gc->pads[GC_DDR] & gc_status_bit[i]) {
+						for(j = 0; j < 4; j++)
+							input_report_key(dev + i, gc_psx_ddr_btn[j], ~data_psx[i][0] & (0x10 << j));
+					} else {
+						input_report_abs(dev + i, ABS_X, 128 + !(data_psx[i][0] & 0x20) * 127 - !(data_psx[i][0] & 0x80) * 128);
+						input_report_abs(dev + i, ABS_Y, 128 + !(data_psx[i][0] & 0x40) * 127 - !(data_psx[i][0] & 0x10) * 128);
+
+						/* for some reason if the extra axes are left unset they drift */
+						/* for (j = 0; j < 4; j++)
+							input_report_abs(dev + i, gc_psx_abs[j+2], 128);
+						 * This needs to be debugged properly,
+						 * maybe fuzz processing needs to be done in input_sync()
+						 *				 --vojtech
+						 */
+					}
+
+					for (j = 0; j < 8; j++)
+						input_report_key(dev + i, gc_psx_btn[j], ~data_psx[i][1] & (1 << j));
+
+					input_report_key(dev + i, BTN_START,  ~data_psx[i][0] & 0x08);
+					input_report_key(dev + i, BTN_SELECT, ~data_psx[i][0] & 0x01);
+
+					input_sync(dev + i);
+
+					break;
+
+				case 0: /* not a pad, ignore */
+					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, int nargs)
+{
+	struct gc *gc;
+	struct parport *pp;
+	int i, j;
+
+	if (config[0] < 0)
+		return NULL;
+
+	if (nargs < 2) {
+		printk(KERN_ERR "gamecon.c: at least one device must be specified\n");
+		return NULL;
+	}
+
+	pp = parport_find_number(config[0]);
+
+	if (!pp) {
+		printk(KERN_ERR "gamecon.c: no such parport\n");
+		return NULL;
+	}
+
+	if (!(gc = kmalloc(sizeof(struct gc), GFP_KERNEL))) {
+		parport_put_port(pp);
+		return NULL;
+	}
+	memset(gc, 0, sizeof(struct gc));
+
+	gc->pd = parport_register_device(pp, "gamecon", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
+
+	parport_put_port(pp);
+
+	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 < nargs - 1; i++) {
+
+		if (!config[i + 1])
+			continue;
+
+		if (config[i + 1] < 1 || config[i + 1] > GC_MAX) {
+			printk(KERN_WARNING "gamecon.c: Pad type %d unknown\n", 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:
+			case GC_DDR:
+				if(config[i + 1] == GC_DDR) {
+					for (j = 0; j < 4; j++)
+						set_bit(gc_psx_ddr_btn[j], gc->dev[i].keybit);
+				} else {
+					for (j = 0; j < 6; j++) {
+						set_bit(gc_psx_abs[j], gc->dev[i].absbit);
+						gc->dev[i].absmin[gc_psx_abs[j]] = 4;
+						gc->dev[i].absmax[gc_psx_abs[j]] = 252;
+						gc->dev[i].absflat[gc_psx_abs[j]] = 2;
+					}
+				}
+
+				for (j = 0; j < 12; j++)
+					set_bit(gc_psx_btn[j], gc->dev[i].keybit);
+
+				break;
+		}
+
+		sprintf(gc->phys[i], "%s/input%d", gc->pd->port->name, i);
+
+                gc->dev[i].name = gc_names[config[i + 1]];
+		gc->dev[i].phys = gc->phys[i];
+                gc->dev[i].id.bustype = BUS_PARPORT;
+                gc->dev[i].id.vendor = 0x0001;
+                gc->dev[i].id.product = config[i + 1];
+                gc->dev[i].id.version = 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: %s on %s\n", gc->dev[i].name, gc->pd->port->name);
+		}
+
+	return gc;
+}
+
+static int __init gc_init(void)
+{
+	gc_base[0] = gc_probe(gc, gc_nargs);
+	gc_base[1] = gc_probe(gc_2, gc_nargs_2);
+	gc_base[2] = gc_probe(gc_3, gc_nargs_3);
+
+	if (gc_base[0] || gc_base[1] || gc_base[2])
+		return 0;
+
+	return -ENODEV;
+}
+
+static 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);