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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 1998-2001 Vojtech Pavlik */ /* * Driver for Amiga joysticks for Linux/m68k */ /* */ #include <linux/types.h> #include <linux/errno.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/input.h> #include <linux/interrupt.h> #include <linux/mutex.h> #include <asm/amigahw.h> #include <asm/amigaints.h> MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); MODULE_DESCRIPTION("Driver for Amiga joysticks"); MODULE_LICENSE("GPL"); static int amijoy[2] = { 0, 1 }; module_param_array_named(map, amijoy, uint, NULL, 0); MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)"); static int amijoy_used; static DEFINE_MUTEX(amijoy_mutex); static struct input_dev *amijoy_dev[2]; static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" }; static irqreturn_t amijoy_interrupt(int irq, void *dummy) { int i, data = 0, button = 0; for (i = 0; i < 2; i++) if (amijoy[i]) { switch (i) { case 0: data = ~amiga_custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break; case 1: data = ~amiga_custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break; } input_report_key(amijoy_dev[i], BTN_TRIGGER, button); input_report_abs(amijoy_dev[i], ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1)); data = ~(data ^ (data << 1)); input_report_abs(amijoy_dev[i], ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1)); input_sync(amijoy_dev[i]); } return IRQ_HANDLED; } static int amijoy_open(struct input_dev *dev) { int err; err = mutex_lock_interruptible(&amijoy_mutex); if (err) return err; if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) { printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB); err = -EBUSY; goto out; } amijoy_used++; out: mutex_unlock(&amijoy_mutex); return err; } static void amijoy_close(struct input_dev *dev) { mutex_lock(&amijoy_mutex); if (!--amijoy_used) free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt); mutex_unlock(&amijoy_mutex); } static int __init amijoy_init(void) { int i, j; int err; if (!MACH_IS_AMIGA) return -ENODEV; for (i = 0; i < 2; i++) { if (!amijoy[i]) continue; amijoy_dev[i] = input_allocate_device(); if (!amijoy_dev[i]) { err = -ENOMEM; goto fail; } if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) { input_free_device(amijoy_dev[i]); err = -EBUSY; goto fail; } amijoy_dev[i]->name = "Amiga joystick"; amijoy_dev[i]->phys = amijoy_phys[i]; amijoy_dev[i]->id.bustype = BUS_AMIGA; amijoy_dev[i]->id.vendor = 0x0001; amijoy_dev[i]->id.product = 0x0003; amijoy_dev[i]->id.version = 0x0100; amijoy_dev[i]->open = amijoy_open; amijoy_dev[i]->close = amijoy_close; amijoy_dev[i]->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); amijoy_dev[i]->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y); amijoy_dev[i]->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); for (j = 0; j < 2; j++) { input_set_abs_params(amijoy_dev[i], ABS_X + j, -1, 1, 0, 0); } err = input_register_device(amijoy_dev[i]); if (err) { input_free_device(amijoy_dev[i]); goto fail; } } return 0; fail: while (--i >= 0) if (amijoy[i]) { input_unregister_device(amijoy_dev[i]); release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2); } return err; } static void __exit amijoy_exit(void) { int i; for (i = 0; i < 2; i++) if (amijoy[i]) { input_unregister_device(amijoy_dev[i]); release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2); } } module_init(amijoy_init); module_exit(amijoy_exit); |