Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
807
drivers/input/joystick/sidewinder.c
Normal file
807
drivers/input/joystick/sidewinder.c
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@@ -0,0 +1,807 @@
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/*
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* Copyright (c) 1998-2005 Vojtech Pavlik
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*/
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/*
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* Microsoft SideWinder joystick family driver for Linux
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Should you need to contact me, the author, you can do so either by
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* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
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* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
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*/
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#include <linux/delay.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/input.h>
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#include <linux/gameport.h>
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#define DRIVER_DESC "Microsoft SideWinder joystick family driver"
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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/*
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* These are really magic values. Changing them can make a problem go away,
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* as well as break everything.
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*/
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#undef SW_DEBUG
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#undef SW_DEBUG_DATA
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#define SW_START 600 /* The time we wait for the first bit [600 us] */
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#define SW_STROBE 60 /* Max time per bit [60 us] */
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#define SW_TIMEOUT 6 /* Wait for everything to settle [6 ms] */
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#define SW_KICK 45 /* Wait after A0 fall till kick [45 us] */
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#define SW_END 8 /* Number of bits before end of packet to kick */
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#define SW_FAIL 16 /* Number of packet read errors to fail and reinitialize */
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#define SW_BAD 2 /* Number of packet read errors to switch off 3d Pro optimization */
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#define SW_OK 64 /* Number of packet read successes to switch optimization back on */
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#define SW_LENGTH 512 /* Max number of bits in a packet */
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#ifdef SW_DEBUG
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#define dbg(format, arg...) printk(KERN_DEBUG __FILE__ ": " format "\n" , ## arg)
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#else
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#define dbg(format, arg...) do {} while (0)
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#endif
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/*
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* SideWinder joystick types ...
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*/
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#define SW_ID_3DP 0
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#define SW_ID_GP 1
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#define SW_ID_PP 2
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#define SW_ID_FFP 3
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#define SW_ID_FSP 4
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#define SW_ID_FFW 5
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/*
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* Names, buttons, axes ...
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*/
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static char *sw_name[] = { "3D Pro", "GamePad", "Precision Pro", "Force Feedback Pro", "FreeStyle Pro",
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"Force Feedback Wheel" };
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static char sw_abs[][7] = {
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{ ABS_X, ABS_Y, ABS_RZ, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y },
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{ ABS_X, ABS_Y },
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{ ABS_X, ABS_Y, ABS_RZ, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y },
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{ ABS_X, ABS_Y, ABS_RZ, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y },
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{ ABS_X, ABS_Y, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y },
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{ ABS_RX, ABS_RUDDER, ABS_THROTTLE }};
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static char sw_bit[][7] = {
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{ 10, 10, 9, 10, 1, 1 },
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{ 1, 1 },
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{ 10, 10, 6, 7, 1, 1 },
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{ 10, 10, 6, 7, 1, 1 },
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{ 10, 10, 6, 1, 1 },
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{ 10, 7, 7, 1, 1 }};
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static short sw_btn[][12] = {
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{ BTN_TRIGGER, BTN_TOP, BTN_THUMB, BTN_THUMB2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_MODE },
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{ BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START, BTN_MODE },
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{ BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_SELECT },
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{ BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_SELECT },
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{ BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START, BTN_MODE, BTN_SELECT },
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{ BTN_TRIGGER, BTN_TOP, BTN_THUMB, BTN_THUMB2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4 }};
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static struct {
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int x;
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int y;
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} sw_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
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struct sw {
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struct gameport *gameport;
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struct input_dev dev[4];
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char name[64];
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char phys[4][32];
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int length;
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int type;
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int bits;
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int number;
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int fail;
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int ok;
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int reads;
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int bads;
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};
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/*
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* sw_read_packet() is a function which reads either a data packet, or an
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* identification packet from a SideWinder joystick. The protocol is very,
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* very, very braindamaged. Microsoft patented it in US patent #5628686.
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*/
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static int sw_read_packet(struct gameport *gameport, unsigned char *buf, int length, int id)
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{
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unsigned long flags;
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int timeout, bitout, sched, i, kick, start, strobe;
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unsigned char pending, u, v;
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i = -id; /* Don't care about data, only want ID */
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timeout = id ? gameport_time(gameport, SW_TIMEOUT * 1000) : 0; /* Set up global timeout for ID packet */
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kick = id ? gameport_time(gameport, SW_KICK) : 0; /* Set up kick timeout for ID packet */
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start = gameport_time(gameport, SW_START);
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strobe = gameport_time(gameport, SW_STROBE);
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bitout = start;
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pending = 0;
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sched = 0;
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local_irq_save(flags); /* Quiet, please */
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gameport_trigger(gameport); /* Trigger */
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v = gameport_read(gameport);
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do {
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bitout--;
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u = v;
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v = gameport_read(gameport);
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} while (!(~v & u & 0x10) && (bitout > 0)); /* Wait for first falling edge on clock */
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if (bitout > 0)
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bitout = strobe; /* Extend time if not timed out */
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while ((timeout > 0 || bitout > 0) && (i < length)) {
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timeout--;
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bitout--; /* Decrement timers */
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sched--;
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u = v;
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v = gameport_read(gameport);
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if ((~u & v & 0x10) && (bitout > 0)) { /* Rising edge on clock - data bit */
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if (i >= 0) /* Want this data */
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buf[i] = v >> 5; /* Store it */
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i++; /* Advance index */
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bitout = strobe; /* Extend timeout for next bit */
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}
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if (kick && (~v & u & 0x01)) { /* Falling edge on axis 0 */
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sched = kick; /* Schedule second trigger */
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kick = 0; /* Don't schedule next time on falling edge */
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pending = 1; /* Mark schedule */
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}
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if (pending && sched < 0 && (i > -SW_END)) { /* Second trigger time */
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gameport_trigger(gameport); /* Trigger */
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bitout = start; /* Long bit timeout */
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pending = 0; /* Unmark schedule */
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timeout = 0; /* Switch from global to bit timeouts */
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}
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}
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local_irq_restore(flags); /* Done - relax */
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#ifdef SW_DEBUG_DATA
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{
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int j;
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printk(KERN_DEBUG "sidewinder.c: Read %d triplets. [", i);
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for (j = 0; j < i; j++) printk("%d", buf[j]);
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printk("]\n");
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}
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#endif
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return i;
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}
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/*
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* sw_get_bits() and GB() compose bits from the triplet buffer into a __u64.
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* Parameter 'pos' is bit number inside packet where to start at, 'num' is number
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* of bits to be read, 'shift' is offset in the resulting __u64 to start at, bits
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* is number of bits per triplet.
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*/
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#define GB(pos,num) sw_get_bits(buf, pos, num, sw->bits)
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static __u64 sw_get_bits(unsigned char *buf, int pos, int num, char bits)
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{
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__u64 data = 0;
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int tri = pos % bits; /* Start position */
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int i = pos / bits;
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int bit = 0;
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while (num--) {
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data |= (__u64)((buf[i] >> tri++) & 1) << bit++; /* Transfer bit */
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if (tri == bits) {
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i++; /* Next triplet */
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tri = 0;
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}
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}
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return data;
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}
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/*
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* sw_init_digital() initializes a SideWinder 3D Pro joystick
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* into digital mode.
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*/
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static void sw_init_digital(struct gameport *gameport)
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{
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int seq[] = { 140, 140+725, 140+300, 0 };
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unsigned long flags;
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int i, t;
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local_irq_save(flags);
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i = 0;
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do {
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gameport_trigger(gameport); /* Trigger */
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t = gameport_time(gameport, SW_TIMEOUT * 1000);
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while ((gameport_read(gameport) & 1) && t) t--; /* Wait for axis to fall back to 0 */
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udelay(seq[i]); /* Delay magic time */
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} while (seq[++i]);
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gameport_trigger(gameport); /* Last trigger */
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local_irq_restore(flags);
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}
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/*
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* sw_parity() computes parity of __u64
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*/
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static int sw_parity(__u64 t)
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{
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int x = t ^ (t >> 32);
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x ^= x >> 16;
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x ^= x >> 8;
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x ^= x >> 4;
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x ^= x >> 2;
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x ^= x >> 1;
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return x & 1;
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}
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/*
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* sw_ccheck() checks synchronization bits and computes checksum of nibbles.
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*/
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static int sw_check(__u64 t)
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{
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unsigned char sum = 0;
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if ((t & 0x8080808080808080ULL) ^ 0x80) /* Sync */
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return -1;
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while (t) { /* Sum */
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sum += t & 0xf;
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t >>= 4;
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}
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return sum & 0xf;
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}
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/*
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* sw_parse() analyzes SideWinder joystick data, and writes the results into
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* the axes and buttons arrays.
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*/
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static int sw_parse(unsigned char *buf, struct sw *sw)
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{
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int hat, i, j;
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struct input_dev *dev = sw->dev;
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switch (sw->type) {
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case SW_ID_3DP:
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if (sw_check(GB(0,64)) || (hat = (GB(6,1) << 3) | GB(60,3)) > 8)
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return -1;
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input_report_abs(dev, ABS_X, (GB( 3,3) << 7) | GB(16,7));
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input_report_abs(dev, ABS_Y, (GB( 0,3) << 7) | GB(24,7));
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input_report_abs(dev, ABS_RZ, (GB(35,2) << 7) | GB(40,7));
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input_report_abs(dev, ABS_THROTTLE, (GB(32,3) << 7) | GB(48,7));
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input_report_abs(dev, ABS_HAT0X, sw_hat_to_axis[hat].x);
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input_report_abs(dev, ABS_HAT0Y, sw_hat_to_axis[hat].y);
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for (j = 0; j < 7; j++)
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input_report_key(dev, sw_btn[SW_ID_3DP][j], !GB(j+8,1));
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input_report_key(dev, BTN_BASE4, !GB(38,1));
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input_report_key(dev, BTN_BASE5, !GB(37,1));
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input_sync(dev);
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return 0;
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case SW_ID_GP:
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for (i = 0; i < sw->number; i ++) {
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if (sw_parity(GB(i*15,15)))
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return -1;
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input_report_abs(dev + i, ABS_X, GB(i*15+3,1) - GB(i*15+2,1));
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input_report_abs(dev + i, ABS_Y, GB(i*15+0,1) - GB(i*15+1,1));
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for (j = 0; j < 10; j++)
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input_report_key(dev + i, sw_btn[SW_ID_GP][j], !GB(i*15+j+4,1));
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input_sync(dev + i);
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}
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return 0;
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case SW_ID_PP:
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case SW_ID_FFP:
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if (!sw_parity(GB(0,48)) || (hat = GB(42,4)) > 8)
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return -1;
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input_report_abs(dev, ABS_X, GB( 9,10));
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input_report_abs(dev, ABS_Y, GB(19,10));
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input_report_abs(dev, ABS_RZ, GB(36, 6));
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input_report_abs(dev, ABS_THROTTLE, GB(29, 7));
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input_report_abs(dev, ABS_HAT0X, sw_hat_to_axis[hat].x);
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input_report_abs(dev, ABS_HAT0Y, sw_hat_to_axis[hat].y);
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for (j = 0; j < 9; j++)
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input_report_key(dev, sw_btn[SW_ID_PP][j], !GB(j,1));
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input_sync(dev);
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return 0;
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case SW_ID_FSP:
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if (!sw_parity(GB(0,43)) || (hat = GB(28,4)) > 8)
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return -1;
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input_report_abs(dev, ABS_X, GB( 0,10));
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input_report_abs(dev, ABS_Y, GB(16,10));
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input_report_abs(dev, ABS_THROTTLE, GB(32, 6));
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input_report_abs(dev, ABS_HAT0X, sw_hat_to_axis[hat].x);
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input_report_abs(dev, ABS_HAT0Y, sw_hat_to_axis[hat].y);
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for (j = 0; j < 6; j++)
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input_report_key(dev, sw_btn[SW_ID_FSP][j], !GB(j+10,1));
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input_report_key(dev, BTN_TR, !GB(26,1));
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input_report_key(dev, BTN_START, !GB(27,1));
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input_report_key(dev, BTN_MODE, !GB(38,1));
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input_report_key(dev, BTN_SELECT, !GB(39,1));
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||||
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input_sync(dev);
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return 0;
|
||||
|
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case SW_ID_FFW:
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||||
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||||
if (!sw_parity(GB(0,33)))
|
||||
return -1;
|
||||
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||||
input_report_abs(dev, ABS_RX, GB( 0,10));
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||||
input_report_abs(dev, ABS_RUDDER, GB(10, 6));
|
||||
input_report_abs(dev, ABS_THROTTLE, GB(16, 6));
|
||||
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||||
for (j = 0; j < 8; j++)
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||||
input_report_key(dev, sw_btn[SW_ID_FFW][j], !GB(j+22,1));
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||||
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input_sync(dev);
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||||
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||||
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 %s"
|
||||
" - going to reinitialize.\n", sw->gameport->phys);
|
||||
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 %s"
|
||||
" - enabling optimization again.\n", sw->gameport->phys);
|
||||
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 %s"
|
||||
" - disabling optimization.\n", sw->gameport->phys);
|
||||
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 %s"
|
||||
" - reinitializing joystick.\n", sw->gameport->phys);
|
||||
|
||||
if (!i && sw->type == SW_ID_3DP) { /* 3D Pro can be in analog mode */
|
||||
mdelay(3 * SW_TIMEOUT);
|
||||
sw_init_digital(sw->gameport);
|
||||
}
|
||||
|
||||
mdelay(SW_TIMEOUT);
|
||||
i = sw_read_packet(sw->gameport, buf, SW_LENGTH, 0); /* Read normal data packet */
|
||||
mdelay(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_poll(struct gameport *gameport)
|
||||
{
|
||||
struct sw *sw = gameport_get_drvdata(gameport);
|
||||
|
||||
sw->reads++;
|
||||
if (sw_read(sw))
|
||||
sw->bads++;
|
||||
}
|
||||
|
||||
static int sw_open(struct input_dev *dev)
|
||||
{
|
||||
struct sw *sw = dev->private;
|
||||
|
||||
gameport_start_polling(sw->gameport);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void sw_close(struct input_dev *dev)
|
||||
{
|
||||
struct sw *sw = dev->private;
|
||||
|
||||
gameport_stop_polling(sw->gameport);
|
||||
}
|
||||
|
||||
/*
|
||||
* 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 int sw_connect(struct gameport *gameport, struct gameport_driver *drv)
|
||||
{
|
||||
struct sw *sw;
|
||||
int i, j, k, l;
|
||||
int err;
|
||||
unsigned char *buf = NULL; /* [SW_LENGTH] */
|
||||
unsigned char *idbuf = NULL; /* [SW_LENGTH] */
|
||||
unsigned char m = 1;
|
||||
char comment[40];
|
||||
|
||||
comment[0] = 0;
|
||||
|
||||
sw = kcalloc(1, sizeof(struct sw), GFP_KERNEL);
|
||||
buf = kmalloc(SW_LENGTH, GFP_KERNEL);
|
||||
idbuf = kmalloc(SW_LENGTH, GFP_KERNEL);
|
||||
if (!sw || !buf || !idbuf) {
|
||||
err = -ENOMEM;
|
||||
goto fail1;
|
||||
}
|
||||
|
||||
sw->gameport = gameport;
|
||||
|
||||
gameport_set_drvdata(gameport, sw);
|
||||
|
||||
err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
|
||||
if (err)
|
||||
goto fail1;
|
||||
|
||||
dbg("Init 0: Opened %s, io %#x, speed %d",
|
||||
gameport->phys, gameport->io, gameport->speed);
|
||||
|
||||
i = sw_read_packet(gameport, buf, SW_LENGTH, 0); /* Read normal packet */
|
||||
msleep(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 */
|
||||
msleep(SW_TIMEOUT);
|
||||
i = sw_read_packet(gameport, buf, SW_LENGTH, 0); /* Retry reading packet */
|
||||
msleep(SW_TIMEOUT);
|
||||
dbg("Init 1b: Length %d.", i);
|
||||
if (!i) { /* No data -> FAIL */
|
||||
err = -ENODEV;
|
||||
goto fail2;
|
||||
}
|
||||
}
|
||||
|
||||
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 <= 0) { /* Read ID failed. Happens in 1-bit mode on PP */
|
||||
msleep(SW_TIMEOUT);
|
||||
i = sw_read_packet(gameport, buf, SW_LENGTH, 0); /* Retry reading packet */
|
||||
m |= sw_guess_mode(buf, i);
|
||||
dbg("Init 2b: Mode %d. Length %d.", m, i);
|
||||
if (!i) {
|
||||
err = -ENODEV;
|
||||
goto fail2;
|
||||
}
|
||||
msleep(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--;
|
||||
msleep(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 66:
|
||||
sw->bits = 3;
|
||||
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 %s, contact <vojtech@ucw.cz>\n", gameport->phys);
|
||||
sw_print_packet("ID", j * 3, idbuf, 3);
|
||||
sw_print_packet("Data", i * m, buf, m);
|
||||
err = -ENODEV;
|
||||
goto fail2;
|
||||
}
|
||||
|
||||
#ifdef SW_DEBUG
|
||||
sw_print_packet("ID", j * 3, idbuf, 3);
|
||||
sw_print_packet("Data", i * m, buf, m);
|
||||
#endif
|
||||
|
||||
gameport_set_poll_handler(gameport, sw_poll);
|
||||
gameport_set_poll_interval(gameport, 20);
|
||||
|
||||
k = i;
|
||||
l = j;
|
||||
|
||||
for (i = 0; i < sw->number; i++) {
|
||||
int bits, code;
|
||||
|
||||
sprintf(sw->name, "Microsoft SideWinder %s", sw_name[sw->type]);
|
||||
sprintf(sw->phys[i], "%s/input%d", gameport->phys, i);
|
||||
|
||||
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].phys = sw->phys[i];
|
||||
sw->dev[i].id.bustype = BUS_GAMEPORT;
|
||||
sw->dev[i].id.vendor = GAMEPORT_ID_VENDOR_MICROSOFT;
|
||||
sw->dev[i].id.product = sw->type;
|
||||
sw->dev[i].id.version = 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: %s%s on %s [%d-bit id %d data %d]\n",
|
||||
sw->name, comment, gameport->phys, m, l, k);
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
fail2: gameport_close(gameport);
|
||||
fail1: gameport_set_drvdata(gameport, NULL);
|
||||
kfree(sw);
|
||||
kfree(buf);
|
||||
kfree(idbuf);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void sw_disconnect(struct gameport *gameport)
|
||||
{
|
||||
struct sw *sw = gameport_get_drvdata(gameport);
|
||||
int i;
|
||||
|
||||
for (i = 0; i < sw->number; i++)
|
||||
input_unregister_device(sw->dev + i);
|
||||
gameport_close(gameport);
|
||||
gameport_set_drvdata(gameport, NULL);
|
||||
kfree(sw);
|
||||
}
|
||||
|
||||
static struct gameport_driver sw_drv = {
|
||||
.driver = {
|
||||
.name = "sidewinder",
|
||||
},
|
||||
.description = DRIVER_DESC,
|
||||
.connect = sw_connect,
|
||||
.disconnect = sw_disconnect,
|
||||
};
|
||||
|
||||
static int __init sw_init(void)
|
||||
{
|
||||
gameport_register_driver(&sw_drv);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit sw_exit(void)
|
||||
{
|
||||
gameport_unregister_driver(&sw_drv);
|
||||
}
|
||||
|
||||
module_init(sw_init);
|
||||
module_exit(sw_exit);
|
||||
Reference in New Issue
Block a user