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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 1999-2001 Vojtech Pavlik * * Based on the work of: * David Thompson */ /* * SpaceTec SpaceOrb 360 and Avenger 6dof controller driver for Linux */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/input.h> #include <linux/serio.h> #define DRIVER_DESC "SpaceTec SpaceOrb 360 and Avenger 6dof controller driver" MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); /* * Constants. */ #define SPACEORB_MAX_LENGTH 64 static int spaceorb_buttons[] = { BTN_TL, BTN_TR, BTN_Y, BTN_X, BTN_B, BTN_A }; static int spaceorb_axes[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ }; /* * Per-Orb data. */ struct spaceorb { struct input_dev *dev; int idx; unsigned char data[SPACEORB_MAX_LENGTH]; char phys[32]; }; static unsigned char spaceorb_xor[] = "SpaceWare"; static unsigned char *spaceorb_errors[] = { "EEPROM storing 0 failed", "Receive queue overflow", "Transmit queue timeout", "Bad packet", "Power brown-out", "EEPROM checksum error", "Hardware fault" }; /* * spaceorb_process_packet() decodes packets the driver receives from the * SpaceOrb. */ static void spaceorb_process_packet(struct spaceorb *spaceorb) { struct input_dev *dev = spaceorb->dev; unsigned char *data = spaceorb->data; unsigned char c = 0; int axes[6]; int i; if (spaceorb->idx < 2) return; for (i = 0; i < spaceorb->idx; i++) c ^= data[i]; if (c) return; switch (data[0]) { case 'R': /* Reset packet */ spaceorb->data[spaceorb->idx - 1] = 0; for (i = 1; i < spaceorb->idx && spaceorb->data[i] == ' '; i++); printk(KERN_INFO "input: %s [%s] is %s\n", dev->name, spaceorb->data + i, spaceorb->phys); break; case 'D': /* Ball + button data */ if (spaceorb->idx != 12) return; for (i = 0; i < 9; i++) spaceorb->data[i+2] ^= spaceorb_xor[i]; axes[0] = ( data[2] << 3) | (data[ 3] >> 4); axes[1] = ((data[3] & 0x0f) << 6) | (data[ 4] >> 1); axes[2] = ((data[4] & 0x01) << 9) | (data[ 5] << 2) | (data[4] >> 5); axes[3] = ((data[6] & 0x1f) << 5) | (data[ 7] >> 2); axes[4] = ((data[7] & 0x03) << 8) | (data[ 8] << 1) | (data[7] >> 6); axes[5] = ((data[9] & 0x3f) << 4) | (data[10] >> 3); for (i = 0; i < 6; i++) input_report_abs(dev, spaceorb_axes[i], axes[i] - ((axes[i] & 0x200) ? 1024 : 0)); for (i = 0; i < 6; i++) input_report_key(dev, spaceorb_buttons[i], (data[1] >> i) & 1); break; case 'K': /* Button data */ if (spaceorb->idx != 5) return; for (i = 0; i < 6; i++) input_report_key(dev, spaceorb_buttons[i], (data[2] >> i) & 1); break; case 'E': /* Error packet */ if (spaceorb->idx != 4) return; printk(KERN_ERR "spaceorb: Device error. [ "); for (i = 0; i < 7; i++) if (data[1] & (1 << i)) printk("%s ", spaceorb_errors[i]); printk("]\n"); break; } input_sync(dev); } static irqreturn_t spaceorb_interrupt(struct serio *serio, unsigned char data, unsigned int flags) { struct spaceorb* spaceorb = serio_get_drvdata(serio); if (~data & 0x80) { if (spaceorb->idx) spaceorb_process_packet(spaceorb); spaceorb->idx = 0; } if (spaceorb->idx < SPACEORB_MAX_LENGTH) spaceorb->data[spaceorb->idx++] = data & 0x7f; return IRQ_HANDLED; } /* * spaceorb_disconnect() is the opposite of spaceorb_connect() */ static void spaceorb_disconnect(struct serio *serio) { struct spaceorb* spaceorb = serio_get_drvdata(serio); serio_close(serio); serio_set_drvdata(serio, NULL); input_unregister_device(spaceorb->dev); kfree(spaceorb); } /* * spaceorb_connect() is the routine that is called when someone adds a * new serio device that supports SpaceOrb/Avenger protocol and registers * it as an input device. */ static int spaceorb_connect(struct serio *serio, struct serio_driver *drv) { struct spaceorb *spaceorb; struct input_dev *input_dev; int err = -ENOMEM; int i; spaceorb = kzalloc(sizeof(struct spaceorb), GFP_KERNEL); input_dev = input_allocate_device(); if (!spaceorb || !input_dev) goto fail1; spaceorb->dev = input_dev; snprintf(spaceorb->phys, sizeof(spaceorb->phys), "%s/input0", serio->phys); input_dev->name = "SpaceTec SpaceOrb 360 / Avenger"; input_dev->phys = spaceorb->phys; input_dev->id.bustype = BUS_RS232; input_dev->id.vendor = SERIO_SPACEORB; 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_ABS); for (i = 0; i < 6; i++) set_bit(spaceorb_buttons[i], input_dev->keybit); for (i = 0; i < 6; i++) input_set_abs_params(input_dev, spaceorb_axes[i], -508, 508, 0, 0); serio_set_drvdata(serio, spaceorb); err = serio_open(serio, drv); if (err) goto fail2; err = input_register_device(spaceorb->dev); if (err) goto fail3; return 0; fail3: serio_close(serio); fail2: serio_set_drvdata(serio, NULL); fail1: input_free_device(input_dev); kfree(spaceorb); return err; } /* * The serio driver structure. */ static const struct serio_device_id spaceorb_serio_ids[] = { { .type = SERIO_RS232, .proto = SERIO_SPACEORB, .id = SERIO_ANY, .extra = SERIO_ANY, }, { 0 } }; MODULE_DEVICE_TABLE(serio, spaceorb_serio_ids); static struct serio_driver spaceorb_drv = { .driver = { .name = "spaceorb", }, .description = DRIVER_DESC, .id_table = spaceorb_serio_ids, .interrupt = spaceorb_interrupt, .connect = spaceorb_connect, .disconnect = spaceorb_disconnect, }; module_serio_driver(spaceorb_drv); |