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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 1999-2001 Vojtech Pavlik */ /* * Logitech WingMan Warrior joystick driver for Linux */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/input.h> #include <linux/serio.h> #define DRIVER_DESC "Logitech WingMan Warrior joystick driver" MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); /* * Constants. */ #define WARRIOR_MAX_LENGTH 16 static char warrior_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 }; /* * Per-Warrior data. */ struct warrior { struct input_dev *dev; int idx, len; unsigned char data[WARRIOR_MAX_LENGTH]; char phys[32]; }; /* * warrior_process_packet() decodes packets the driver receives from the * Warrior. It updates the data accordingly. */ static void warrior_process_packet(struct warrior *warrior) { struct input_dev *dev = warrior->dev; unsigned char *data = warrior->data; if (!warrior->idx) return; switch ((data[0] >> 4) & 7) { case 1: /* Button data */ input_report_key(dev, BTN_TRIGGER, data[3] & 1); input_report_key(dev, BTN_THUMB, (data[3] >> 1) & 1); input_report_key(dev, BTN_TOP, (data[3] >> 2) & 1); input_report_key(dev, BTN_TOP2, (data[3] >> 3) & 1); break; case 3: /* XY-axis info->data */ input_report_abs(dev, ABS_X, ((data[0] & 8) << 5) - (data[2] | ((data[0] & 4) << 5))); input_report_abs(dev, ABS_Y, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7)); break; case 5: /* Throttle, spinner, hat info->data */ input_report_abs(dev, ABS_THROTTLE, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7)); input_report_abs(dev, ABS_HAT0X, (data[3] & 2 ? 1 : 0) - (data[3] & 1 ? 1 : 0)); input_report_abs(dev, ABS_HAT0Y, (data[3] & 8 ? 1 : 0) - (data[3] & 4 ? 1 : 0)); input_report_rel(dev, REL_DIAL, (data[2] | ((data[0] & 4) << 5)) - ((data[0] & 8) << 5)); break; } input_sync(dev); } /* * warrior_interrupt() is called by the low level driver when characters * are ready for us. We then buffer them for further processing, or call the * packet processing routine. */ static irqreturn_t warrior_interrupt(struct serio *serio, unsigned char data, unsigned int flags) { struct warrior *warrior = serio_get_drvdata(serio); if (data & 0x80) { if (warrior->idx) warrior_process_packet(warrior); warrior->idx = 0; warrior->len = warrior_lengths[(data >> 4) & 7]; } if (warrior->idx < warrior->len) warrior->data[warrior->idx++] = data; if (warrior->idx == warrior->len) { if (warrior->idx) warrior_process_packet(warrior); warrior->idx = 0; warrior->len = 0; } return IRQ_HANDLED; } /* * warrior_disconnect() is the opposite of warrior_connect() */ static void warrior_disconnect(struct serio *serio) { struct warrior *warrior = serio_get_drvdata(serio); serio_close(serio); serio_set_drvdata(serio, NULL); input_unregister_device(warrior->dev); kfree(warrior); } /* * warrior_connect() is the routine that is called when someone adds a * new serio device. It looks for the Warrior, and if found, registers * it as an input device. */ static int warrior_connect(struct serio *serio, struct serio_driver *drv) { struct warrior *warrior; struct input_dev *input_dev; int err = -ENOMEM; warrior = kzalloc(sizeof(struct warrior), GFP_KERNEL); input_dev = input_allocate_device(); if (!warrior || !input_dev) goto fail1; warrior->dev = input_dev; snprintf(warrior->phys, sizeof(warrior->phys), "%s/input0", serio->phys); input_dev->name = "Logitech WingMan Warrior"; input_dev->phys = warrior->phys; input_dev->id.bustype = BUS_RS232; input_dev->id.vendor = SERIO_WARRIOR; input_dev->id.product = 0x0001; input_dev->id.version = 0x0100; input_dev->dev.parent = &serio->dev; input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) | BIT_MASK(EV_ABS); input_dev->keybit[BIT_WORD(BTN_TRIGGER)] = BIT_MASK(BTN_TRIGGER) | BIT_MASK(BTN_THUMB) | BIT_MASK(BTN_TOP) | BIT_MASK(BTN_TOP2); input_dev->relbit[0] = BIT_MASK(REL_DIAL); input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 8); input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 8); input_set_abs_params(input_dev, ABS_THROTTLE, -112, 112, 0, 0); input_set_abs_params(input_dev, ABS_HAT0X, -1, 1, 0, 0); input_set_abs_params(input_dev, ABS_HAT0Y, -1, 1, 0, 0); serio_set_drvdata(serio, warrior); err = serio_open(serio, drv); if (err) goto fail2; err = input_register_device(warrior->dev); if (err) goto fail3; return 0; fail3: serio_close(serio); fail2: serio_set_drvdata(serio, NULL); fail1: input_free_device(input_dev); kfree(warrior); return err; } /* * The serio driver structure. */ static const struct serio_device_id warrior_serio_ids[] = { { .type = SERIO_RS232, .proto = SERIO_WARRIOR, .id = SERIO_ANY, .extra = SERIO_ANY, }, { 0 } }; MODULE_DEVICE_TABLE(serio, warrior_serio_ids); static struct serio_driver warrior_drv = { .driver = { .name = "warrior", }, .description = DRIVER_DESC, .id_table = warrior_serio_ids, .interrupt = warrior_interrupt, .connect = warrior_connect, .disconnect = warrior_disconnect, }; module_serio_driver(warrior_drv); |