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811 lines
20 KiB
811 lines
20 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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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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*/ |
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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/input.h> |
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#include <linux/gameport.h> |
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#include <linux/jiffies.h> |
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#define DRIVER_DESC "Microsoft SideWinder joystick family driver" |
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MODULE_AUTHOR("Vojtech Pavlik <[email protected]>"); |
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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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static const 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; |
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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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dev = sw->dev[0]; |
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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(sw->dev[i], ABS_X, GB(i*15+3,1) - GB(i*15+2,1)); |
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input_report_abs(sw->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(sw->dev[i], sw_btn[SW_ID_GP][j], !GB(i*15+j+4,1)); |
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input_sync(sw->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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dev = sw->dev[0]; |
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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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dev = sw->dev[0]; |
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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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input_sync(dev); |
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return 0; |
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case SW_ID_FFW: |
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if (!sw_parity(GB(0,33))) |
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return -1; |
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dev = sw->dev[0]; |
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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)); |
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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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input_sync(dev); |
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return 0; |
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} |
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return -1; |
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} |
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/* |
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* sw_read() reads SideWinder joystick data, and reinitializes |
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* the joystick in case of persistent problems. This is the function that is |
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* called from the generic code to poll the joystick. |
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*/ |
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static int sw_read(struct sw *sw) |
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{ |
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unsigned char buf[SW_LENGTH]; |
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int i; |
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i = sw_read_packet(sw->gameport, buf, sw->length, 0); |
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if (sw->type == SW_ID_3DP && sw->length == 66 && i != 66) { /* Broken packet, try to fix */ |
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if (i == 64 && !sw_check(sw_get_bits(buf,0,64,1))) { /* Last init failed, 1 bit mode */ |
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printk(KERN_WARNING "sidewinder.c: Joystick in wrong mode on %s" |
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" - going to reinitialize.\n", sw->gameport->phys); |
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sw->fail = SW_FAIL; /* Reinitialize */ |
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i = 128; /* Bogus value */ |
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} |
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if (i < 66 && GB(0,64) == GB(i*3-66,64)) /* 1 == 3 */ |
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i = 66; /* Everything is fine */ |
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if (i < 66 && GB(0,64) == GB(66,64)) /* 1 == 2 */ |
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i = 66; /* Everything is fine */ |
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if (i < 66 && GB(i*3-132,64) == GB(i*3-66,64)) { /* 2 == 3 */ |
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memmove(buf, buf + i - 22, 22); /* Move data */ |
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i = 66; /* Carry on */ |
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} |
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} |
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if (i == sw->length && !sw_parse(buf, sw)) { /* Parse data */ |
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sw->fail = 0; |
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sw->ok++; |
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if (sw->type == SW_ID_3DP && sw->length == 66 /* Many packets OK */ |
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&& sw->ok > SW_OK) { |
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printk(KERN_INFO "sidewinder.c: No more trouble on %s" |
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" - enabling optimization again.\n", sw->gameport->phys); |
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sw->length = 22; |
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} |
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return 0; |
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} |
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sw->ok = 0; |
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sw->fail++; |
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if (sw->type == SW_ID_3DP && sw->length == 22 && sw->fail > SW_BAD) { /* Consecutive bad packets */ |
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printk(KERN_INFO "sidewinder.c: Many bit errors on %s" |
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" - disabling optimization.\n", sw->gameport->phys); |
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sw->length = 66; |
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} |
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if (sw->fail < SW_FAIL) |
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return -1; /* Not enough, don't reinitialize yet */ |
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printk(KERN_WARNING "sidewinder.c: Too many bit errors on %s" |
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" - reinitializing joystick.\n", sw->gameport->phys); |
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if (!i && sw->type == SW_ID_3DP) { /* 3D Pro can be in analog mode */ |
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mdelay(3 * SW_TIMEOUT); |
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sw_init_digital(sw->gameport); |
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} |
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mdelay(SW_TIMEOUT); |
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i = sw_read_packet(sw->gameport, buf, SW_LENGTH, 0); /* Read normal data packet */ |
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mdelay(SW_TIMEOUT); |
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sw_read_packet(sw->gameport, buf, SW_LENGTH, i); /* Read ID packet, this initializes the stick */ |
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sw->fail = SW_FAIL; |
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return -1; |
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} |
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static void sw_poll(struct gameport *gameport) |
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{ |
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struct sw *sw = gameport_get_drvdata(gameport); |
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sw->reads++; |
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if (sw_read(sw)) |
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sw->bads++; |
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} |
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static int sw_open(struct input_dev *dev) |
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{ |
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struct sw *sw = input_get_drvdata(dev); |
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gameport_start_polling(sw->gameport); |
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return 0; |
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} |
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static void sw_close(struct input_dev *dev) |
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{ |
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struct sw *sw = input_get_drvdata(dev); |
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gameport_stop_polling(sw->gameport); |
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} |
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/* |
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* sw_print_packet() prints the contents of a SideWinder packet. |
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*/ |
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static void sw_print_packet(char *name, int length, unsigned char *buf, char bits) |
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{ |
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int i; |
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printk(KERN_INFO "sidewinder.c: %s packet, %d bits. [", name, length); |
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for (i = (((length + 3) >> 2) - 1); i >= 0; i--) |
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printk("%x", (int)sw_get_bits(buf, i << 2, 4, bits)); |
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printk("]\n"); |
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} |
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/* |
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* sw_3dp_id() translates the 3DP id into a human legible string. |
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* Unfortunately I don't know how to do this for the other SW types. |
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*/ |
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static void sw_3dp_id(unsigned char *buf, char *comment, size_t size) |
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{ |
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int i; |
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char pnp[8], rev[9]; |
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for (i = 0; i < 7; i++) /* ASCII PnP ID */ |
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pnp[i] = sw_get_bits(buf, 24+8*i, 8, 1); |
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for (i = 0; i < 8; i++) /* ASCII firmware revision */ |
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rev[i] = sw_get_bits(buf, 88+8*i, 8, 1); |
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pnp[7] = rev[8] = 0; |
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snprintf(comment, size, " [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; |
|
struct input_dev *input_dev; |
|
int i, j, k, l; |
|
int err = 0; |
|
unsigned char *buf = NULL; /* [SW_LENGTH] */ |
|
unsigned char *idbuf = NULL; /* [SW_LENGTH] */ |
|
unsigned char m = 1; |
|
char comment[40]; |
|
|
|
comment[0] = 0; |
|
|
|
sw = kzalloc(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++; |
|
fallthrough; |
|
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++; |
|
fallthrough; |
|
case 30: |
|
sw->number++; |
|
fallthrough; |
|
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; |
|
fallthrough; |
|
case 198: |
|
sw->length = 22; |
|
fallthrough; |
|
case 64: |
|
sw->type = SW_ID_3DP; |
|
if (j == 160) |
|
sw_3dp_id(idbuf, comment, sizeof(comment)); |
|
break; |
|
} |
|
} |
|
|
|
} while (k && sw->type == -1); |
|
|
|
if (sw->type == -1) { |
|
printk(KERN_WARNING "sidewinder.c: unknown joystick device detected " |
|
"on %s, contact <[email protected]>\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; |
|
|
|
snprintf(sw->name, sizeof(sw->name), |
|
"Microsoft SideWinder %s", sw_name[sw->type]); |
|
snprintf(sw->phys[i], sizeof(sw->phys[i]), |
|
"%s/input%d", gameport->phys, i); |
|
|
|
sw->dev[i] = input_dev = input_allocate_device(); |
|
if (!input_dev) { |
|
err = -ENOMEM; |
|
goto fail3; |
|
} |
|
|
|
input_dev->name = sw->name; |
|
input_dev->phys = sw->phys[i]; |
|
input_dev->id.bustype = BUS_GAMEPORT; |
|
input_dev->id.vendor = GAMEPORT_ID_VENDOR_MICROSOFT; |
|
input_dev->id.product = sw->type; |
|
input_dev->id.version = 0x0100; |
|
input_dev->dev.parent = &gameport->dev; |
|
|
|
input_set_drvdata(input_dev, sw); |
|
|
|
input_dev->open = sw_open; |
|
input_dev->close = sw_close; |
|
|
|
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
|
|
|
for (j = 0; (bits = sw_bit[sw->type][j]); j++) { |
|
int min, max, fuzz, flat; |
|
|
|
code = sw_abs[sw->type][j]; |
|
min = bits == 1 ? -1 : 0; |
|
max = (1 << bits) - 1; |
|
fuzz = (bits >> 1) >= 2 ? 1 << ((bits >> 1) - 2) : 0; |
|
flat = code == ABS_THROTTLE || bits < 5 ? |
|
0 : 1 << (bits - 5); |
|
|
|
input_set_abs_params(input_dev, code, |
|
min, max, fuzz, flat); |
|
} |
|
|
|
for (j = 0; (code = sw_btn[sw->type][j]); j++) |
|
__set_bit(code, input_dev->keybit); |
|
|
|
dbg("%s%s [%d-bit id %d data %d]\n", sw->name, comment, m, l, k); |
|
|
|
err = input_register_device(sw->dev[i]); |
|
if (err) |
|
goto fail4; |
|
} |
|
|
|
out: kfree(buf); |
|
kfree(idbuf); |
|
|
|
return err; |
|
|
|
fail4: input_free_device(sw->dev[i]); |
|
fail3: while (--i >= 0) |
|
input_unregister_device(sw->dev[i]); |
|
fail2: gameport_close(gameport); |
|
fail1: gameport_set_drvdata(gameport, NULL); |
|
kfree(sw); |
|
goto out; |
|
} |
|
|
|
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", |
|
.owner = THIS_MODULE, |
|
}, |
|
.description = DRIVER_DESC, |
|
.connect = sw_connect, |
|
.disconnect = sw_disconnect, |
|
}; |
|
|
|
module_gameport_driver(sw_drv);
|
|
|