sidewinder.c
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- /*
- * $Id: sidewinder.c,v 1.20 2001/05/19 08:14:54 vojtech Exp $
- *
- * Copyright (c) 1998-2001 Vojtech Pavlik
- *
- * Sponsored by SuSE
- */
- /*
- * Microsoft SideWinder joystick family 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/delay.h>
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/slab.h>
- #include <linux/init.h>
- #include <linux/input.h>
- #include <linux/gameport.h>
- /*
- * These are really magic values. Changing them can make a problem go away,
- * as well as break everything.
- */
- #undef SW_DEBUG
- #define SW_START 400 /* The time we wait for the first bit [400 us] */
- #define SW_STROBE 45 /* Max time per bit [45 us] */
- #define SW_TIMEOUT 4000 /* Wait for everything to settle [4 ms] */
- #define SW_KICK 45 /* Wait after A0 fall till kick [45 us] */
- #define SW_END 8 /* Number of bits before end of packet to kick */
- #define SW_FAIL 16 /* Number of packet read errors to fail and reinitialize */
- #define SW_BAD 2 /* Number of packet read errors to switch off 3d Pro optimization */
- #define SW_OK 64 /* Number of packet read successes to switch optimization back on */
- #define SW_LENGTH 512 /* Max number of bits in a packet */
- #define SW_REFRESH HZ/50 /* Time to wait between updates of joystick data [20 ms] */
- #ifdef SW_DEBUG
- #define dbg(format, arg...) printk(KERN_DEBUG __FILE__ ": " format "n" , ## arg)
- #else
- #define dbg(format, arg...) do {} while (0)
- #endif
- /*
- * SideWinder joystick types ...
- */
- #define SW_ID_3DP 0
- #define SW_ID_GP 1
- #define SW_ID_PP 2
- #define SW_ID_FFP 3
- #define SW_ID_FSP 4
- #define SW_ID_FFW 5
- /*
- * Names, buttons, axes ...
- */
- static char *sw_name[] = { "3D Pro", "GamePad", "Precision Pro", "Force Feedback Pro", "FreeStyle Pro",
- "Force Feedback Wheel" };
- static char sw_abs[][7] = {
- { ABS_X, ABS_Y, ABS_RZ, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y },
- { ABS_X, ABS_Y },
- { ABS_X, ABS_Y, ABS_RZ, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y },
- { ABS_X, ABS_Y, ABS_RZ, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y },
- { ABS_X, ABS_Y, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y },
- { ABS_RX, ABS_RUDDER, ABS_THROTTLE }};
- static char sw_bit[][7] = {
- { 10, 10, 9, 10, 1, 1 },
- { 1, 1 },
- { 10, 10, 6, 7, 1, 1 },
- { 10, 10, 6, 7, 1, 1 },
- { 10, 10, 6, 1, 1 },
- { 10, 7, 7, 1, 1 }};
- static short sw_btn[][12] = {
- { BTN_TRIGGER, BTN_TOP, BTN_THUMB, BTN_THUMB2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_MODE },
- { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START, BTN_MODE },
- { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_SELECT },
- { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_SELECT },
- { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START, BTN_MODE, BTN_SELECT },
- { BTN_TRIGGER, BTN_TOP, BTN_THUMB, BTN_THUMB2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4 }};
- static struct {
- int x;
- int y;
- } sw_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
- struct sw {
- struct gameport *gameport;
- struct timer_list timer;
- struct input_dev dev[4];
- char name[64];
- int length;
- int type;
- int bits;
- int number;
- int fail;
- int ok;
- int reads;
- int bads;
- int used;
- };
- /*
- * sw_read_packet() is a function which reads either a data packet, or an
- * identification packet from a SideWinder joystick. The protocol is very,
- * very, very braindamaged. Microsoft patented it in US patent #5628686.
- */
- static int sw_read_packet(struct gameport *gameport, unsigned char *buf, int length, int id)
- {
- unsigned long flags;
- int timeout, bitout, sched, i, kick, start, strobe;
- unsigned char pending, u, v;
- i = -id; /* Don't care about data, only want ID */
- timeout = id ? gameport_time(gameport, SW_TIMEOUT) : 0; /* Set up global timeout for ID packet */
- kick = id ? gameport_time(gameport, SW_KICK) : 0; /* Set up kick timeout for ID packet */
- start = gameport_time(gameport, SW_START);
- strobe = gameport_time(gameport, SW_STROBE);
- bitout = start;
- pending = 0;
- sched = 0;
- __save_flags(flags); /* Quiet, please */
- __cli();
- gameport_trigger(gameport); /* Trigger */
- v = gameport_read(gameport);
- do {
- bitout--;
- u = v;
- v = gameport_read(gameport);
- } while (!(~v & u & 0x10) && (bitout > 0)); /* Wait for first falling edge on clock */
- if (bitout > 0) bitout = strobe; /* Extend time if not timed out */
- while ((timeout > 0 || bitout > 0) && (i < length)) {
- timeout--;
- bitout--; /* Decrement timers */
- sched--;
- u = v;
- v = gameport_read(gameport);
- if ((~u & v & 0x10) && (bitout > 0)) { /* Rising edge on clock - data bit */
- if (i >= 0) /* Want this data */
- buf[i] = v >> 5; /* Store it */
- i++; /* Advance index */
- bitout = strobe; /* Extend timeout for next bit */
- }
- if (kick && (~v & u & 0x01)) { /* Falling edge on axis 0 */
- sched = kick; /* Schedule second trigger */
- kick = 0; /* Don't schedule next time on falling edge */
- pending = 1; /* Mark schedule */
- }
- if (pending && sched < 0 && (i > -SW_END)) { /* Second trigger time */
- gameport_trigger(gameport); /* Trigger */
- bitout = start; /* Long bit timeout */
- pending = 0; /* Unmark schedule */
- timeout = 0; /* Switch from global to bit timeouts */
- }
- }
- __restore_flags(flags); /* Done - relax */
- #ifdef SW_DEBUG
- {
- int j;
- printk(KERN_DEBUG "sidewinder.c: Read %d triplets. [", i);
- for (j = 0; j < i; j++) printk("%d", buf[j]);
- printk("]n");
- }
- #endif
- return i;
- }
- /*
- * sw_get_bits() and GB() compose bits from the triplet buffer into a __u64.
- * Parameter 'pos' is bit number inside packet where to start at, 'num' is number
- * of bits to be read, 'shift' is offset in the resulting __u64 to start at, bits
- * is number of bits per triplet.
- */
- #define GB(pos,num) sw_get_bits(buf, pos, num, sw->bits)
- static __u64 sw_get_bits(unsigned char *buf, int pos, int num, char bits)
- {
- __u64 data = 0;
- int tri = pos % bits; /* Start position */
- int i = pos / bits;
- int bit = 0;
- while (num--) {
- data |= (__u64)((buf[i] >> tri++) & 1) << bit++; /* Transfer bit */
- if (tri == bits) {
- i++; /* Next triplet */
- tri = 0;
- }
- }
- return data;
- }
- /*
- * sw_init_digital() initializes a SideWinder 3D Pro joystick
- * into digital mode.
- */
- static void sw_init_digital(struct gameport *gameport)
- {
- int seq[] = { 140, 140+725, 140+300, 0 };
- unsigned long flags;
- int i, t;
- __save_flags(flags);
- __cli();
- i = 0;
- do {
- gameport_trigger(gameport); /* Trigger */
- t = gameport_time(gameport, SW_TIMEOUT);
- while ((gameport_read(gameport) & 1) && t) t--; /* Wait for axis to fall back to 0 */
- udelay(seq[i]); /* Delay magic time */
- } while (seq[++i]);
- gameport_trigger(gameport); /* Last trigger */
- __restore_flags(flags);
- }
- /*
- * sw_parity() computes parity of __u64
- */
- static int sw_parity(__u64 t)
- {
- int x = t ^ (t >> 32);
- x ^= x >> 16;
- x ^= x >> 8;
- x ^= x >> 4;
- x ^= x >> 2;
- x ^= x >> 1;
- return x & 1;
- }
- /*
- * sw_ccheck() checks synchronization bits and computes checksum of nibbles.
- */
- static int sw_check(__u64 t)
- {
- unsigned char sum = 0;
- if ((t & 0x8080808080808080ULL) ^ 0x80) /* Sync */
- return -1;
- while (t) { /* Sum */
- sum += t & 0xf;
- t >>= 4;
- }
- return sum & 0xf;
- }
- /*
- * sw_parse() analyzes SideWinder joystick data, and writes the results into
- * the axes and buttons arrays.
- */
- static int sw_parse(unsigned char *buf, struct sw *sw)
- {
- int hat, i, j;
- struct input_dev *dev = sw->dev;
- switch (sw->type) {
- case SW_ID_3DP:
- if (sw_check(GB(0,64)) || (hat = (GB(6,1) << 3) | GB(60,3)) > 8) return -1;
- input_report_abs(dev, ABS_X, (GB( 3,3) << 7) | GB(16,7));
- input_report_abs(dev, ABS_Y, (GB( 0,3) << 7) | GB(24,7));
- input_report_abs(dev, ABS_RZ, (GB(35,2) << 7) | GB(40,7));
- input_report_abs(dev, ABS_THROTTLE, (GB(32,3) << 7) | GB(48,7));
- input_report_abs(dev, ABS_HAT0X, sw_hat_to_axis[hat].x);
- input_report_abs(dev, ABS_HAT0Y, sw_hat_to_axis[hat].y);
- for (j = 0; j < 7; j++)
- input_report_key(dev, sw_btn[SW_ID_3DP][j], !GB(j+8,1));
- input_report_key(dev, BTN_BASE4, !GB(38,1));
- input_report_key(dev, BTN_BASE5, !GB(37,1));
- return 0;
- case SW_ID_GP:
- for (i = 0; i < sw->number; i ++) {
- if (sw_parity(GB(i*15,15))) return -1;
- input_report_abs(dev + i, ABS_X, GB(i*15+3,1) - GB(i*15+2,1));
- input_report_abs(dev + i, ABS_Y, GB(i*15+0,1) - GB(i*15+1,1));
- for (j = 0; j < 10; j++)
- input_report_key(dev + i, sw_btn[SW_ID_GP][j], !GB(i*15+j+4,1));
- }
- return 0;
- case SW_ID_PP:
- case SW_ID_FFP:
- if (!sw_parity(GB(0,48)) || (hat = GB(42,4)) > 8) return -1;
- input_report_abs(dev, ABS_X, GB( 9,10));
- input_report_abs(dev, ABS_Y, GB(19,10));
- input_report_abs(dev, ABS_RZ, GB(36, 6));
- input_report_abs(dev, ABS_THROTTLE, GB(29, 7));
- input_report_abs(dev, ABS_HAT0X, sw_hat_to_axis[hat].x);
- input_report_abs(dev, ABS_HAT0Y, sw_hat_to_axis[hat].y);
- for (j = 0; j < 9; j++)
- input_report_key(dev, sw_btn[SW_ID_PP][j], !GB(j,1));
- return 0;
- case SW_ID_FSP:
- if (!sw_parity(GB(0,43)) || (hat = GB(28,4)) > 8) return -1;
- input_report_abs(dev, ABS_X, GB( 0,10));
- input_report_abs(dev, ABS_Y, GB(16,10));
- input_report_abs(dev, ABS_THROTTLE, GB(32, 6));
- input_report_abs(dev, ABS_HAT0X, sw_hat_to_axis[hat].x);
- input_report_abs(dev, ABS_HAT0Y, sw_hat_to_axis[hat].y);
- for (j = 0; j < 6; j++)
- input_report_key(dev, sw_btn[SW_ID_FSP][j], !GB(j+10,1));
- input_report_key(dev, BTN_TR, GB(26,1));
- input_report_key(dev, BTN_START, GB(27,1));
- input_report_key(dev, BTN_MODE, GB(38,1));
- input_report_key(dev, BTN_SELECT, GB(39,1));
- return 0;
- case SW_ID_FFW:
- if (!sw_parity(GB(0,33))) return -1;
- input_report_abs(dev, ABS_RX, GB( 0,10));
- input_report_abs(dev, ABS_RUDDER, GB(10, 6));
- input_report_abs(dev, ABS_THROTTLE, GB(16, 6));
- for (j = 0; j < 8; j++)
- input_report_key(dev, sw_btn[SW_ID_FFW][j], !GB(j+22,1));
- return 0;
- }
- return -1;
- }
- /*
- * sw_read() reads SideWinder joystick data, and reinitializes
- * the joystick in case of persistent problems. This is the function that is
- * called from the generic code to poll the joystick.
- */
- static int sw_read(struct sw *sw)
- {
- unsigned char buf[SW_LENGTH];
- int i;
- i = sw_read_packet(sw->gameport, buf, sw->length, 0);
- if (sw->type == SW_ID_3DP && sw->length == 66 && i != 66) { /* Broken packet, try to fix */
- if (i == 64 && !sw_check(sw_get_bits(buf,0,64,1))) { /* Last init failed, 1 bit mode */
- printk(KERN_WARNING "sidewinder.c: Joystick in wrong mode on gameport%d"
- " - going to reinitialize.n", sw->gameport->number);
- sw->fail = SW_FAIL; /* Reinitialize */
- i = 128; /* Bogus value */
- }
- if (i < 66 && GB(0,64) == GB(i*3-66,64)) /* 1 == 3 */
- i = 66; /* Everything is fine */
- if (i < 66 && GB(0,64) == GB(66,64)) /* 1 == 2 */
- i = 66; /* Everything is fine */
- if (i < 66 && GB(i*3-132,64) == GB(i*3-66,64)) { /* 2 == 3 */
- memmove(buf, buf + i - 22, 22); /* Move data */
- i = 66; /* Carry on */
- }
- }
- if (i == sw->length && !sw_parse(buf, sw)) { /* Parse data */
- sw->fail = 0;
- sw->ok++;
- if (sw->type == SW_ID_3DP && sw->length == 66 /* Many packets OK */
- && sw->ok > SW_OK) {
- printk(KERN_INFO "sidewinder.c: No more trouble on gameport%d"
- " - enabling optimization again.n", sw->gameport->number);
- sw->length = 22;
- }
- return 0;
- }
- sw->ok = 0;
- sw->fail++;
- if (sw->type == SW_ID_3DP && sw->length == 22 && sw->fail > SW_BAD) { /* Consecutive bad packets */
- printk(KERN_INFO "sidewinder.c: Many bit errors on gameport%d"
- " - disabling optimization.n", sw->gameport->number);
- sw->length = 66;
- }
- if (sw->fail < SW_FAIL) return -1; /* Not enough, don't reinitialize yet */
- printk(KERN_WARNING "sidewinder.c: Too many bit errors on gameport%d"
- " - reinitializing joystick.n", sw->gameport->number);
- if (!i && sw->type == SW_ID_3DP) { /* 3D Pro can be in analog mode */
- udelay(3 * SW_TIMEOUT);
- sw_init_digital(sw->gameport);
- }
- udelay(SW_TIMEOUT);
- i = sw_read_packet(sw->gameport, buf, SW_LENGTH, 0); /* Read normal data packet */
- udelay(SW_TIMEOUT);
- sw_read_packet(sw->gameport, buf, SW_LENGTH, i); /* Read ID packet, this initializes the stick */
- sw->fail = SW_FAIL;
-
- return -1;
- }
- static void sw_timer(unsigned long private)
- {
- struct sw *sw = (void *) private;
-
- sw->reads++;
- if (sw_read(sw)) sw->bads++;
- mod_timer(&sw->timer, jiffies + SW_REFRESH);
- }
- static int sw_open(struct input_dev *dev)
- {
- struct sw *sw = dev->private;
- if (!sw->used++)
- mod_timer(&sw->timer, jiffies + SW_REFRESH);
- return 0;
- }
- static void sw_close(struct input_dev *dev)
- {
- struct sw *sw = dev->private;
- if (!--sw->used)
- del_timer(&sw->timer);
- }
- /*
- * sw_print_packet() prints the contents of a SideWinder packet.
- */
- static void sw_print_packet(char *name, int length, unsigned char *buf, char bits)
- {
- int i;
- printk(KERN_INFO "sidewinder.c: %s packet, %d bits. [", name, length);
- for (i = (((length + 3) >> 2) - 1); i >= 0; i--)
- printk("%x", (int)sw_get_bits(buf, i << 2, 4, bits));
- printk("]n");
- }
- /*
- * sw_3dp_id() translates the 3DP id into a human legible string.
- * Unfortunately I don't know how to do this for the other SW types.
- */
- static void sw_3dp_id(unsigned char *buf, char *comment)
- {
- int i;
- char pnp[8], rev[9];
- for (i = 0; i < 7; i++) /* ASCII PnP ID */
- pnp[i] = sw_get_bits(buf, 24+8*i, 8, 1);
- for (i = 0; i < 8; i++) /* ASCII firmware revision */
- rev[i] = sw_get_bits(buf, 88+8*i, 8, 1);
- pnp[7] = rev[8] = 0;
- sprintf(comment, " [PnP %d.%02d id %s rev %s]",
- (int) ((sw_get_bits(buf, 8, 6, 1) << 6) | /* Two 6-bit values */
- sw_get_bits(buf, 16, 6, 1)) / 100,
- (int) ((sw_get_bits(buf, 8, 6, 1) << 6) |
- sw_get_bits(buf, 16, 6, 1)) % 100,
- pnp, rev);
- }
- /*
- * sw_guess_mode() checks the upper two button bits for toggling -
- * indication of that the joystick is in 3-bit mode. This is documented
- * behavior for 3DP ID packet, and for example the FSP does this in
- * normal packets instead. Fun ...
- */
- static int sw_guess_mode(unsigned char *buf, int len)
- {
- int i;
- unsigned char xor = 0;
- for (i = 1; i < len; i++) xor |= (buf[i - 1] ^ buf[i]) & 6;
- return !!xor * 2 + 1;
- }
- /*
- * sw_connect() probes for SideWinder type joysticks.
- */
- static void sw_connect(struct gameport *gameport, struct gameport_dev *dev)
- {
- struct sw *sw;
- int i, j, k, l;
- unsigned char buf[SW_LENGTH];
- unsigned char idbuf[SW_LENGTH];
- unsigned char m = 1;
- char comment[40];
- comment[0] = 0;
- if (!(sw = kmalloc(sizeof(struct sw), GFP_KERNEL))) return;
- memset(sw, 0, sizeof(struct sw));
- gameport->private = sw;
- sw->gameport = gameport;
- init_timer(&sw->timer);
- sw->timer.data = (long) sw;
- sw->timer.function = sw_timer;
- if (gameport_open(gameport, dev, GAMEPORT_MODE_RAW))
- goto fail1;
- dbg("Init 0: Opened gameport %d, io %#x, speed %d",
- gameport->number, gameport->io, gameport->speed);
- i = sw_read_packet(gameport, buf, SW_LENGTH, 0); /* Read normal packet */
- m |= sw_guess_mode(buf, i); /* Data packet (1-bit) can carry mode info [FSP] */
- udelay(SW_TIMEOUT);
- dbg("Init 1: Mode %d. Length %d.", m , i);
- if (!i) { /* No data. 3d Pro analog mode? */
- sw_init_digital(gameport); /* Switch to digital */
- udelay(SW_TIMEOUT);
- i = sw_read_packet(gameport, buf, SW_LENGTH, 0); /* Retry reading packet */
- udelay(SW_TIMEOUT);
- dbg("Init 1b: Length %d.", i);
- if (!i) goto fail2; /* No data -> FAIL */
- }
- j = sw_read_packet(gameport, idbuf, SW_LENGTH, i); /* Read ID. This initializes the stick */
- m |= sw_guess_mode(idbuf, j); /* ID packet should carry mode info [3DP] */
- dbg("Init 2: Mode %d. ID Length %d.", m , j);
- if (!j) { /* Read ID failed. Happens in 1-bit mode on PP */
- udelay(SW_TIMEOUT);
- i = sw_read_packet(gameport, buf, SW_LENGTH, 0); /* Retry reading packet */
- dbg("Init 2b: Mode %d. Length %d.", m, i);
- if (!i) goto fail2;
- udelay(SW_TIMEOUT);
- j = sw_read_packet(gameport, idbuf, SW_LENGTH, i); /* Retry reading ID */
- dbg("Init 2c: ID Length %d.", j);
- }
- sw->type = -1;
- k = SW_FAIL; /* Try SW_FAIL times */
- l = 0;
- do {
- k--;
- udelay(SW_TIMEOUT);
- i = sw_read_packet(gameport, buf, SW_LENGTH, 0); /* Read data packet */
- dbg("Init 3: Mode %d. Length %d. Last %d. Tries %d.", m, i, l, k);
- if (i > l) { /* Longer? As we can only lose bits, it makes */
- /* no sense to try detection for a packet shorter */
- l = i; /* than the previous one */
- sw->number = 1;
- sw->gameport = gameport;
- sw->length = i;
- sw->bits = m;
- dbg("Init 3a: Case %d.n", i * m);
- switch (i * m) {
- case 60:
- sw->number++;
- case 45: /* Ambiguous packet length */
- if (j <= 40) { /* ID length less or eq 40 -> FSP */
- case 43:
- sw->type = SW_ID_FSP;
- break;
- }
- sw->number++;
- case 30:
- sw->number++;
- case 15:
- sw->type = SW_ID_GP;
- break;
- case 33:
- case 31:
- sw->type = SW_ID_FFW;
- break;
- case 48: /* Ambiguous */
- if (j == 14) { /* ID length 14*3 -> FFP */
- sw->type = SW_ID_FFP;
- sprintf(comment, " [AC %s]", sw_get_bits(idbuf,38,1,3) ? "off" : "on");
- } else
- sw->type = SW_ID_PP;
- break;
- case 198:
- sw->length = 22;
- case 64:
- sw->type = SW_ID_3DP;
- if (j == 160) sw_3dp_id(idbuf, comment);
- break;
- }
- }
- } while (k && (sw->type == -1));
- if (sw->type == -1) {
- printk(KERN_WARNING "sidewinder.c: unknown joystick device detected "
- "on gameport%d, contact <vojtech@suse.cz>n", gameport->number);
- sw_print_packet("ID", j * 3, idbuf, 3);
- sw_print_packet("Data", i * m, buf, m);
- goto fail2;
- }
- #ifdef SW_DEBUG
- sw_print_packet("ID", j * 3, idbuf, 3);
- sw_print_packet("Data", i * m, buf, m);
- #endif
- k = i;
- l = j;
- for (i = 0; i < sw->number; i++) {
- int bits, code;
- sprintf(sw->name, "Microsoft SideWinder %s", sw_name[sw->type]);
- sw->dev[i].private = sw;
- sw->dev[i].open = sw_open;
- sw->dev[i].close = sw_close;
- sw->dev[i].name = sw->name;
- sw->dev[i].idbus = BUS_GAMEPORT;
- sw->dev[i].idvendor = GAMEPORT_ID_VENDOR_MICROSOFT;
- sw->dev[i].idproduct = sw->type;
- sw->dev[i].idversion = 0x0100;
- sw->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
- for (j = 0; (bits = sw_bit[sw->type][j]); j++) {
- code = sw_abs[sw->type][j];
- set_bit(code, sw->dev[i].absbit);
- sw->dev[i].absmax[code] = (1 << bits) - 1;
- sw->dev[i].absmin[code] = (bits == 1) ? -1 : 0;
- sw->dev[i].absfuzz[code] = ((bits >> 1) >= 2) ? (1 << ((bits >> 1) - 2)) : 0;
- if (code != ABS_THROTTLE)
- sw->dev[i].absflat[code] = (bits >= 5) ? (1 << (bits - 5)) : 0;
- }
- for (j = 0; (code = sw_btn[sw->type][j]); j++)
- set_bit(code, sw->dev[i].keybit);
- input_register_device(sw->dev + i);
- printk(KERN_INFO "input%d: %s%s on gameport%d.%d [%d-bit id %d data %d]n",
- sw->dev[i].number, sw->name, comment, gameport->number, i, m, l, k);
- }
- return;
- fail2: gameport_close(gameport);
- fail1: kfree(sw);
- }
- static void sw_disconnect(struct gameport *gameport)
- {
- int i;
- struct sw *sw = gameport->private;
- for (i = 0; i < sw->number; i++)
- input_unregister_device(sw->dev + i);
- gameport_close(gameport);
- kfree(sw);
- }
- static struct gameport_dev sw_dev = {
- connect: sw_connect,
- disconnect: sw_disconnect,
- };
- int __init sw_init(void)
- {
- gameport_register_device(&sw_dev);
- return 0;
- }
- void __exit sw_exit(void)
- {
- gameport_unregister_device(&sw_dev);
- }
- module_init(sw_init);
- module_exit(sw_exit);
- MODULE_LICENSE("GPL");