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![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
223 lines
5.5 KiB
C
223 lines
5.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 1999-2001 Vojtech Pavlik
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*
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* Based on the work of:
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* David Thompson
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*/
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/*
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* SpaceTec SpaceOrb 360 and Avenger 6dof controller driver for Linux
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*/
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/*
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/input.h>
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#include <linux/serio.h>
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#define DRIVER_DESC "SpaceTec SpaceOrb 360 and Avenger 6dof controller driver"
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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/*
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* Constants.
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*/
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#define SPACEORB_MAX_LENGTH 64
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static int spaceorb_buttons[] = { BTN_TL, BTN_TR, BTN_Y, BTN_X, BTN_B, BTN_A };
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static int spaceorb_axes[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ };
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/*
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* Per-Orb data.
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*/
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struct spaceorb {
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struct input_dev *dev;
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int idx;
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unsigned char data[SPACEORB_MAX_LENGTH];
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char phys[32];
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};
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static unsigned char spaceorb_xor[] = "SpaceWare";
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static unsigned char *spaceorb_errors[] = { "EEPROM storing 0 failed", "Receive queue overflow", "Transmit queue timeout",
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"Bad packet", "Power brown-out", "EEPROM checksum error", "Hardware fault" };
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/*
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* spaceorb_process_packet() decodes packets the driver receives from the
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* SpaceOrb.
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*/
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static void spaceorb_process_packet(struct spaceorb *spaceorb)
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{
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struct input_dev *dev = spaceorb->dev;
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unsigned char *data = spaceorb->data;
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unsigned char c = 0;
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int axes[6];
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int i;
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if (spaceorb->idx < 2) return;
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for (i = 0; i < spaceorb->idx; i++) c ^= data[i];
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if (c) return;
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switch (data[0]) {
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case 'R': /* Reset packet */
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spaceorb->data[spaceorb->idx - 1] = 0;
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for (i = 1; i < spaceorb->idx && spaceorb->data[i] == ' '; i++);
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printk(KERN_INFO "input: %s [%s] is %s\n",
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dev->name, spaceorb->data + i, spaceorb->phys);
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break;
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case 'D': /* Ball + button data */
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if (spaceorb->idx != 12) return;
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for (i = 0; i < 9; i++) spaceorb->data[i+2] ^= spaceorb_xor[i];
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axes[0] = ( data[2] << 3) | (data[ 3] >> 4);
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axes[1] = ((data[3] & 0x0f) << 6) | (data[ 4] >> 1);
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axes[2] = ((data[4] & 0x01) << 9) | (data[ 5] << 2) | (data[4] >> 5);
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axes[3] = ((data[6] & 0x1f) << 5) | (data[ 7] >> 2);
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axes[4] = ((data[7] & 0x03) << 8) | (data[ 8] << 1) | (data[7] >> 6);
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axes[5] = ((data[9] & 0x3f) << 4) | (data[10] >> 3);
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for (i = 0; i < 6; i++)
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input_report_abs(dev, spaceorb_axes[i], axes[i] - ((axes[i] & 0x200) ? 1024 : 0));
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for (i = 0; i < 6; i++)
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input_report_key(dev, spaceorb_buttons[i], (data[1] >> i) & 1);
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break;
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case 'K': /* Button data */
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if (spaceorb->idx != 5) return;
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for (i = 0; i < 6; i++)
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input_report_key(dev, spaceorb_buttons[i], (data[2] >> i) & 1);
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break;
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case 'E': /* Error packet */
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if (spaceorb->idx != 4) return;
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printk(KERN_ERR "spaceorb: Device error. [ ");
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for (i = 0; i < 7; i++) if (data[1] & (1 << i)) printk("%s ", spaceorb_errors[i]);
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printk("]\n");
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break;
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}
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input_sync(dev);
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}
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static irqreturn_t spaceorb_interrupt(struct serio *serio,
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unsigned char data, unsigned int flags)
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{
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struct spaceorb* spaceorb = serio_get_drvdata(serio);
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if (~data & 0x80) {
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if (spaceorb->idx) spaceorb_process_packet(spaceorb);
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spaceorb->idx = 0;
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}
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if (spaceorb->idx < SPACEORB_MAX_LENGTH)
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spaceorb->data[spaceorb->idx++] = data & 0x7f;
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return IRQ_HANDLED;
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}
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/*
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* spaceorb_disconnect() is the opposite of spaceorb_connect()
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*/
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static void spaceorb_disconnect(struct serio *serio)
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{
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struct spaceorb* spaceorb = serio_get_drvdata(serio);
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serio_close(serio);
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serio_set_drvdata(serio, NULL);
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input_unregister_device(spaceorb->dev);
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kfree(spaceorb);
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}
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/*
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* spaceorb_connect() is the routine that is called when someone adds a
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* new serio device that supports SpaceOrb/Avenger protocol and registers
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* it as an input device.
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*/
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static int spaceorb_connect(struct serio *serio, struct serio_driver *drv)
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{
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struct spaceorb *spaceorb;
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struct input_dev *input_dev;
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int err = -ENOMEM;
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int i;
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spaceorb = kzalloc(sizeof(struct spaceorb), GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!spaceorb || !input_dev)
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goto fail1;
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spaceorb->dev = input_dev;
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snprintf(spaceorb->phys, sizeof(spaceorb->phys), "%s/input0", serio->phys);
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input_dev->name = "SpaceTec SpaceOrb 360 / Avenger";
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input_dev->phys = spaceorb->phys;
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input_dev->id.bustype = BUS_RS232;
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input_dev->id.vendor = SERIO_SPACEORB;
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input_dev->id.product = 0x0001;
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input_dev->id.version = 0x0100;
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input_dev->dev.parent = &serio->dev;
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
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for (i = 0; i < 6; i++)
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set_bit(spaceorb_buttons[i], input_dev->keybit);
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for (i = 0; i < 6; i++)
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input_set_abs_params(input_dev, spaceorb_axes[i], -508, 508, 0, 0);
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serio_set_drvdata(serio, spaceorb);
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err = serio_open(serio, drv);
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if (err)
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goto fail2;
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err = input_register_device(spaceorb->dev);
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if (err)
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goto fail3;
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return 0;
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fail3: serio_close(serio);
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fail2: serio_set_drvdata(serio, NULL);
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fail1: input_free_device(input_dev);
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kfree(spaceorb);
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return err;
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}
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/*
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* The serio driver structure.
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*/
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static const struct serio_device_id spaceorb_serio_ids[] = {
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{
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.type = SERIO_RS232,
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.proto = SERIO_SPACEORB,
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.id = SERIO_ANY,
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.extra = SERIO_ANY,
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},
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{ 0 }
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};
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MODULE_DEVICE_TABLE(serio, spaceorb_serio_ids);
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static struct serio_driver spaceorb_drv = {
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.driver = {
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.name = "spaceorb",
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},
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.description = DRIVER_DESC,
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.id_table = spaceorb_serio_ids,
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.interrupt = spaceorb_interrupt,
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.connect = spaceorb_connect,
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.disconnect = spaceorb_disconnect,
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};
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module_serio_driver(spaceorb_drv);
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