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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221// 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_obj(*spaceorb); 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);