diff options
Diffstat (limited to 'drivers/input/joystick/stinger.c')
| -rw-r--r-- | drivers/input/joystick/stinger.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/drivers/input/joystick/stinger.c b/drivers/input/joystick/stinger.c new file mode 100644 index 000000000000..6f6e6753d590 --- /dev/null +++ b/drivers/input/joystick/stinger.c @@ -0,0 +1,236 @@ +/* + * $Id: stinger.c,v 1.10 2002/01/22 20:29:31 vojtech Exp $ + * + * Copyright (c) 2000-2001 Vojtech Pavlik + * Copyright (c) 2000 Mark Fletcher + */ + +/* + * Gravis Stinger gamepad driver for Linux + */ + +/* + * This program is free warftware; 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/module.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/serio.h> +#include <linux/init.h> + +#define DRIVER_DESC "Gravis Stinger gamepad driver" + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/* + * Constants. + */ + +#define STINGER_MAX_LENGTH 8 + +static char *stinger_name = "Gravis Stinger"; + +/* + * Per-Stinger data. + */ + +struct stinger { + struct input_dev dev; + int idx; + unsigned char data[STINGER_MAX_LENGTH]; + char phys[32]; +}; + +/* + * stinger_process_packet() decodes packets the driver receives from the + * Stinger. It updates the data accordingly. + */ + +static void stinger_process_packet(struct stinger *stinger, struct pt_regs *regs) +{ + struct input_dev *dev = &stinger->dev; + unsigned char *data = stinger->data; + + if (!stinger->idx) return; + + input_regs(dev, regs); + + input_report_key(dev, BTN_A, ((data[0] & 0x20) >> 5)); + input_report_key(dev, BTN_B, ((data[0] & 0x10) >> 4)); + input_report_key(dev, BTN_C, ((data[0] & 0x08) >> 3)); + input_report_key(dev, BTN_X, ((data[0] & 0x04) >> 2)); + input_report_key(dev, BTN_Y, ((data[3] & 0x20) >> 5)); + input_report_key(dev, BTN_Z, ((data[3] & 0x10) >> 4)); + input_report_key(dev, BTN_TL, ((data[3] & 0x08) >> 3)); + input_report_key(dev, BTN_TR, ((data[3] & 0x04) >> 2)); + input_report_key(dev, BTN_SELECT, ((data[3] & 0x02) >> 1)); + input_report_key(dev, BTN_START, (data[3] & 0x01)); + + input_report_abs(dev, ABS_X, (data[1] & 0x3F) - ((data[0] & 0x01) << 6)); + input_report_abs(dev, ABS_Y, ((data[0] & 0x02) << 5) - (data[2] & 0x3F)); + + input_sync(dev); + + return; +} + +/* + * stinger_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 stinger_interrupt(struct serio *serio, + unsigned char data, unsigned int flags, struct pt_regs *regs) +{ + struct stinger *stinger = serio_get_drvdata(serio); + + /* All Stinger packets are 4 bytes */ + + if (stinger->idx < STINGER_MAX_LENGTH) + stinger->data[stinger->idx++] = data; + + if (stinger->idx == 4) { + stinger_process_packet(stinger, regs); + stinger->idx = 0; + } + + return IRQ_HANDLED; +} + +/* + * stinger_disconnect() is the opposite of stinger_connect() + */ + +static void stinger_disconnect(struct serio *serio) +{ + struct stinger *stinger = serio_get_drvdata(serio); + + input_unregister_device(&stinger->dev); + serio_close(serio); + serio_set_drvdata(serio, NULL); + kfree(stinger); +} + +/* + * stinger_connect() is the routine that is called when someone adds a + * new serio device that supports Stinger protocol and registers it as + * an input device. + */ + +static int stinger_connect(struct serio *serio, struct serio_driver *drv) +{ + struct stinger *stinger; + int i; + int err; + + if (!(stinger = kmalloc(sizeof(struct stinger), GFP_KERNEL))) + return -ENOMEM; + + memset(stinger, 0, sizeof(struct stinger)); + + stinger->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); + stinger->dev.keybit[LONG(BTN_A)] = BIT(BTN_A) | BIT(BTN_B) | BIT(BTN_C) | BIT(BTN_X) | \ + BIT(BTN_Y) | BIT(BTN_Z) | BIT(BTN_TL) | BIT(BTN_TR) | \ + BIT(BTN_START) | BIT(BTN_SELECT); + stinger->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y); + + sprintf(stinger->phys, "%s/serio0", serio->phys); + + init_input_dev(&stinger->dev); + stinger->dev.name = stinger_name; + stinger->dev.phys = stinger->phys; + stinger->dev.id.bustype = BUS_RS232; + stinger->dev.id.vendor = SERIO_STINGER; + stinger->dev.id.product = 0x0001; + stinger->dev.id.version = 0x0100; + stinger->dev.dev = &serio->dev; + + for (i = 0; i < 2; i++) { + stinger->dev.absmax[ABS_X+i] = 64; + stinger->dev.absmin[ABS_X+i] = -64; + stinger->dev.absflat[ABS_X+i] = 4; + } + + stinger->dev.private = stinger; + + serio_set_drvdata(serio, stinger); + + err = serio_open(serio, drv); + if (err) { + serio_set_drvdata(serio, NULL); + kfree(stinger); + return err; + } + + input_register_device(&stinger->dev); + + printk(KERN_INFO "input: %s on %s\n", stinger_name, serio->phys); + + return 0; +} + +/* + * The serio driver structure. + */ + +static struct serio_device_id stinger_serio_ids[] = { + { + .type = SERIO_RS232, + .proto = SERIO_STINGER, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, stinger_serio_ids); + +static struct serio_driver stinger_drv = { + .driver = { + .name = "stinger", + }, + .description = DRIVER_DESC, + .id_table = stinger_serio_ids, + .interrupt = stinger_interrupt, + .connect = stinger_connect, + .disconnect = stinger_disconnect, +}; + +/* + * The functions for inserting/removing us as a module. + */ + +static int __init stinger_init(void) +{ + serio_register_driver(&stinger_drv); + return 0; +} + +static void __exit stinger_exit(void) +{ + serio_unregister_driver(&stinger_drv); +} + +module_init(stinger_init); +module_exit(stinger_exit); |