diff options
Diffstat (limited to 'drivers/input/joystick/spaceball.c')
| -rw-r--r-- | drivers/input/joystick/spaceball.c | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/drivers/input/joystick/spaceball.c b/drivers/input/joystick/spaceball.c new file mode 100644 index 000000000000..ec0a2a64d49c --- /dev/null +++ b/drivers/input/joystick/spaceball.c @@ -0,0 +1,319 @@ +/* + * $Id: spaceball.c,v 1.17 2002/01/22 20:29:03 vojtech Exp $ + * + * Copyright (c) 1999-2001 Vojtech Pavlik + * + * Based on the work of: + * David Thompson + * Joseph Krahn + */ + +/* + * SpaceTec SpaceBall 2003/3003/4000 FLX driver for Linux + */ + +/* + * 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 + * + * Should you need to contact me, the author, you can do so either by + * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: + * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic + */ + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/input.h> +#include <linux/serio.h> + +#define DRIVER_DESC "SpaceTec SpaceBall 2003/3003/4000 FLX driver" + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/* + * Constants. + */ + +#define SPACEBALL_MAX_LENGTH 128 +#define SPACEBALL_MAX_ID 8 + +#define SPACEBALL_1003 1 +#define SPACEBALL_2003B 3 +#define SPACEBALL_2003C 4 +#define SPACEBALL_3003C 7 +#define SPACEBALL_4000FLX 8 +#define SPACEBALL_4000FLX_L 9 + +static int spaceball_axes[] = { ABS_X, ABS_Z, ABS_Y, ABS_RX, ABS_RZ, ABS_RY }; +static char *spaceball_names[] = { + "?", "SpaceTec SpaceBall 1003", "SpaceTec SpaceBall 2003", "SpaceTec SpaceBall 2003B", + "SpaceTec SpaceBall 2003C", "SpaceTec SpaceBall 3003", "SpaceTec SpaceBall SpaceController", + "SpaceTec SpaceBall 3003C", "SpaceTec SpaceBall 4000FLX", "SpaceTec SpaceBall 4000FLX Lefty" }; + +/* + * Per-Ball data. + */ + +struct spaceball { + struct input_dev dev; + struct serio *serio; + int idx; + int escape; + unsigned char data[SPACEBALL_MAX_LENGTH]; + char phys[32]; +}; + +/* + * spaceball_process_packet() decodes packets the driver receives from the + * SpaceBall. + */ + +static void spaceball_process_packet(struct spaceball* spaceball, struct pt_regs *regs) +{ + struct input_dev *dev = &spaceball->dev; + unsigned char *data = spaceball->data; + int i; + + if (spaceball->idx < 2) return; + + input_regs(dev, regs); + + switch (spaceball->data[0]) { + + case 'D': /* Ball data */ + if (spaceball->idx != 15) return; + for (i = 0; i < 6; i++) + input_report_abs(dev, spaceball_axes[i], + (__s16)((data[2 * i + 3] << 8) | data[2 * i + 2])); + break; + + case 'K': /* Button data */ + if (spaceball->idx != 3) return; + input_report_key(dev, BTN_1, (data[2] & 0x01) || (data[2] & 0x20)); + input_report_key(dev, BTN_2, data[2] & 0x02); + input_report_key(dev, BTN_3, data[2] & 0x04); + input_report_key(dev, BTN_4, data[2] & 0x08); + input_report_key(dev, BTN_5, data[1] & 0x01); + input_report_key(dev, BTN_6, data[1] & 0x02); + input_report_key(dev, BTN_7, data[1] & 0x04); + input_report_key(dev, BTN_8, data[1] & 0x10); + break; + + case '.': /* Advanced button data */ + if (spaceball->idx != 3) return; + input_report_key(dev, BTN_1, data[2] & 0x01); + input_report_key(dev, BTN_2, data[2] & 0x02); + input_report_key(dev, BTN_3, data[2] & 0x04); + input_report_key(dev, BTN_4, data[2] & 0x08); + input_report_key(dev, BTN_5, data[2] & 0x10); + input_report_key(dev, BTN_6, data[2] & 0x20); + input_report_key(dev, BTN_7, data[2] & 0x80); + input_report_key(dev, BTN_8, data[1] & 0x01); + input_report_key(dev, BTN_9, data[1] & 0x02); + input_report_key(dev, BTN_A, data[1] & 0x04); + input_report_key(dev, BTN_B, data[1] & 0x08); + input_report_key(dev, BTN_C, data[1] & 0x10); + input_report_key(dev, BTN_MODE, data[1] & 0x20); + break; + + case 'E': /* Device error */ + spaceball->data[spaceball->idx - 1] = 0; + printk(KERN_ERR "spaceball: Device error. [%s]\n", spaceball->data + 1); + break; + + case '?': /* Bad command packet */ + spaceball->data[spaceball->idx - 1] = 0; + printk(KERN_ERR "spaceball: Bad command. [%s]\n", spaceball->data + 1); + break; + } + + input_sync(dev); +} + +/* + * Spaceball 4000 FLX packets all start with a one letter packet-type decriptor, + * and end in 0x0d. It uses '^' as an escape for CR, XOFF and XON characters which + * can occur in the axis values. + */ + +static irqreturn_t spaceball_interrupt(struct serio *serio, + unsigned char data, unsigned int flags, struct pt_regs *regs) +{ + struct spaceball *spaceball = serio_get_drvdata(serio); + + switch (data) { + case 0xd: + spaceball_process_packet(spaceball, regs); + spaceball->idx = 0; + spaceball->escape = 0; + break; + case '^': + if (!spaceball->escape) { + spaceball->escape = 1; + break; + } + spaceball->escape = 0; + case 'M': + case 'Q': + case 'S': + if (spaceball->escape) { + spaceball->escape = 0; + data &= 0x1f; + } + default: + if (spaceball->escape) + spaceball->escape = 0; + if (spaceball->idx < SPACEBALL_MAX_LENGTH) + spaceball->data[spaceball->idx++] = data; + break; + } + return IRQ_HANDLED; +} + +/* + * spaceball_disconnect() is the opposite of spaceball_connect() + */ + +static void spaceball_disconnect(struct serio *serio) +{ + struct spaceball* spaceball = serio_get_drvdata(serio); + + input_unregister_device(&spaceball->dev); + serio_close(serio); + serio_set_drvdata(serio, NULL); + kfree(spaceball); +} + +/* + * spaceball_connect() is the routine that is called when someone adds a + * new serio device that supports Spaceball protocol and registers it as + * an input device. + */ + +static int spaceball_connect(struct serio *serio, struct serio_driver *drv) +{ + struct spaceball *spaceball; + int i, t, id; + int err; + + if ((id = serio->id.id) > SPACEBALL_MAX_ID) + return -ENODEV; + + if (!(spaceball = kmalloc(sizeof(struct spaceball), GFP_KERNEL))) + return - ENOMEM; + + memset(spaceball, 0, sizeof(struct spaceball)); + + spaceball->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); + + switch (id) { + case SPACEBALL_4000FLX: + case SPACEBALL_4000FLX_L: + spaceball->dev.keybit[LONG(BTN_0)] |= BIT(BTN_9); + spaceball->dev.keybit[LONG(BTN_A)] |= BIT(BTN_A) | BIT(BTN_B) | BIT(BTN_C) | BIT(BTN_MODE); + default: + spaceball->dev.keybit[LONG(BTN_0)] |= BIT(BTN_2) | BIT(BTN_3) | BIT(BTN_4) + | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7) | BIT(BTN_8); + case SPACEBALL_3003C: + spaceball->dev.keybit[LONG(BTN_0)] |= BIT(BTN_1) | BIT(BTN_8); + } + + for (i = 0; i < 6; i++) { + t = spaceball_axes[i]; + set_bit(t, spaceball->dev.absbit); + spaceball->dev.absmin[t] = i < 3 ? -8000 : -1600; + spaceball->dev.absmax[t] = i < 3 ? 8000 : 1600; + spaceball->dev.absflat[t] = i < 3 ? 40 : 8; + spaceball->dev.absfuzz[t] = i < 3 ? 8 : 2; + } + + spaceball->serio = serio; + spaceball->dev.private = spaceball; + + sprintf(spaceball->phys, "%s/input0", serio->phys); + + init_input_dev(&spaceball->dev); + spaceball->dev.name = spaceball_names[id]; + spaceball->dev.phys = spaceball->phys; + spaceball->dev.id.bustype = BUS_RS232; + spaceball->dev.id.vendor = SERIO_SPACEBALL; + spaceball->dev.id.product = id; + spaceball->dev.id.version = 0x0100; + spaceball->dev.dev = &serio->dev; + + serio_set_drvdata(serio, spaceball); + + err = serio_open(serio, drv); + if (err) { + serio_set_drvdata(serio, NULL); + kfree(spaceball); + return err; + } + + input_register_device(&spaceball->dev); + + printk(KERN_INFO "input: %s on serio%s\n", + spaceball_names[id], serio->phys); + + return 0; +} + +/* + * The serio driver structure. + */ + +static struct serio_device_id spaceball_serio_ids[] = { + { + .type = SERIO_RS232, + .proto = SERIO_SPACEBALL, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, spaceball_serio_ids); + +static struct serio_driver spaceball_drv = { + .driver = { + .name = "spaceball", + }, + .description = DRIVER_DESC, + .id_table = spaceball_serio_ids, + .interrupt = spaceball_interrupt, + .connect = spaceball_connect, + .disconnect = spaceball_disconnect, +}; + +/* + * The functions for inserting/removing us as a module. + */ + +static int __init spaceball_init(void) +{ + serio_register_driver(&spaceball_drv); + return 0; +} + +static void __exit spaceball_exit(void) +{ + serio_unregister_driver(&spaceball_drv); +} + +module_init(spaceball_init); +module_exit(spaceball_exit); |