drivers/input/joystick/spaceorb.c - kernel/mindspeed - Git at Google

 /*
  *  Copyright (c) 1999-2001 Vojtech Pavlik
  *
  *  Based on the work of:
  *	David Thompson
  */

 /*
  * SpaceTec SpaceOrb 360 and Avenger 6dof controller 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 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 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,
 };

 /*
  * The functions for inserting/removing us as a module.
  */

 static int __init spaceorb_init(void)
 {
 	return serio_register_driver(&spaceorb_drv);
 }

 static void __exit spaceorb_exit(void)
 {
 	serio_unregister_driver(&spaceorb_drv);
 }

 module_init(spaceorb_init);
 module_exit(spaceorb_exit);
	/*
	* Copyright (c) 1999-2001 Vojtech Pavlik
	*
	* Based on the work of:
	* David Thompson
	*/

	/*
	* SpaceTec SpaceOrb 360 and Avenger 6dof controller 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 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 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,
	};

	/*
	* The functions for inserting/removing us as a module.
	*/

	static int __init spaceorb_init(void)
	{
	return serio_register_driver(&spaceorb_drv);
	}

	static void __exit spaceorb_exit(void)
	{
	serio_unregister_driver(&spaceorb_drv);
	}

	module_init(spaceorb_init);
	module_exit(spaceorb_exit);