drivers/hid/usbhid/usbmouse.c - kernel/msm - Gitiles

 /*
  * $Id: usbmouse.c,v 1.15 2001/12/27 10:37:41 vojtech Exp $
  *
  *  Copyright (c) 1999-2001 Vojtech Pavlik
  *
  *  USB HIDBP Mouse support
  */

 /*
  * 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/usb/input.h>
 #include <linux/hid.h>

 /*
  * Version Information
  */
 #define DRIVER_VERSION "v1.6"
 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
 #define DRIVER_DESC "USB HID Boot Protocol mouse driver"
 #define DRIVER_LICENSE "GPL"

 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE(DRIVER_LICENSE);

 struct usb_mouse {
 	char name[128];
 	char phys[64];
 	struct usb_device *usbdev;
 	struct input_dev *dev;
 	struct urb *irq;

 	signed char *data;
 	dma_addr_t data_dma;
 };

 static void usb_mouse_irq(struct urb *urb)
 {
 	struct usb_mouse *mouse = urb->context;
 	signed char *data = mouse->data;
 	struct input_dev *dev = mouse->dev;
 	int status;

 	switch (urb->status) {
 	case 0:			/* success */
 		break;
 	case -ECONNRESET:	/* unlink */
 	case -ENOENT:
 	case -ESHUTDOWN:
 		return;
 	/* -EPIPE:  should clear the halt */
 	default:		/* error */
 		goto resubmit;
 	}

 	input_report_key(dev, BTN_LEFT,   data[0] & 0x01);
 	input_report_key(dev, BTN_RIGHT,  data[0] & 0x02);
 	input_report_key(dev, BTN_MIDDLE, data[0] & 0x04);
 	input_report_key(dev, BTN_SIDE,   data[0] & 0x08);
 	input_report_key(dev, BTN_EXTRA,  data[0] & 0x10);

 	input_report_rel(dev, REL_X,     data[1]);
 	input_report_rel(dev, REL_Y,     data[2]);
 	input_report_rel(dev, REL_WHEEL, data[3]);

 	input_sync(dev);
 resubmit:
 	status = usb_submit_urb (urb, GFP_ATOMIC);
 	if (status)
 		err ("can't resubmit intr, %s-%s/input0, status %d",
 				mouse->usbdev->bus->bus_name,
 				mouse->usbdev->devpath, status);
 }

 static int usb_mouse_open(struct input_dev *dev)
 {
 	struct usb_mouse *mouse = input_get_drvdata(dev);

 	mouse->irq->dev = mouse->usbdev;
 	if (usb_submit_urb(mouse->irq, GFP_KERNEL))
 		return -EIO;

 	return 0;
 }

 static void usb_mouse_close(struct input_dev *dev)
 {
 	struct usb_mouse *mouse = input_get_drvdata(dev);

 	usb_kill_urb(mouse->irq);
 }

 static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id)
 {
 	struct usb_device *dev = interface_to_usbdev(intf);
 	struct usb_host_interface *interface;
 	struct usb_endpoint_descriptor *endpoint;
 	struct usb_mouse *mouse;
 	struct input_dev *input_dev;
 	int pipe, maxp;
 	int error = -ENOMEM;

 	interface = intf->cur_altsetting;

 	if (interface->desc.bNumEndpoints != 1)
 		return -ENODEV;

 	endpoint = &interface->endpoint[0].desc;
 	if (!usb_endpoint_is_int_in(endpoint))
 		return -ENODEV;

 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
 	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));

 	mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
 	input_dev = input_allocate_device();
 	if (!mouse || !input_dev)
 		goto fail1;

 	mouse->data = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &mouse->data_dma);
 	if (!mouse->data)
 		goto fail1;

 	mouse->irq = usb_alloc_urb(0, GFP_KERNEL);
 	if (!mouse->irq)
 		goto fail2;

 	mouse->usbdev = dev;
 	mouse->dev = input_dev;

 	if (dev->manufacturer)
 		strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name));

 	if (dev->product) {
 		if (dev->manufacturer)
 			strlcat(mouse->name, " ", sizeof(mouse->name));
 		strlcat(mouse->name, dev->product, sizeof(mouse->name));
 	}

 	if (!strlen(mouse->name))
 		snprintf(mouse->name, sizeof(mouse->name),
 			 "USB HIDBP Mouse %04x:%04x",
 			 le16_to_cpu(dev->descriptor.idVendor),
 			 le16_to_cpu(dev->descriptor.idProduct));

 	usb_make_path(dev, mouse->phys, sizeof(mouse->phys));
 	strlcat(mouse->phys, "/input0", sizeof(mouse->phys));

 	input_dev->name = mouse->name;
 	input_dev->phys = mouse->phys;
 	usb_to_input_id(dev, &input_dev->id);
 	input_dev->dev.parent = &intf->dev;

 	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
 	input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
 		BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
 	input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
 	input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) |
 		BIT_MASK(BTN_EXTRA);
 	input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);

 	input_set_drvdata(input_dev, mouse);

 	input_dev->open = usb_mouse_open;
 	input_dev->close = usb_mouse_close;

 	usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,
 			 (maxp > 8 ? 8 : maxp),
 			 usb_mouse_irq, mouse, endpoint->bInterval);
 	mouse->irq->transfer_dma = mouse->data_dma;
 	mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

 	error = input_register_device(mouse->dev);
 	if (error)
 		goto fail3;

 	usb_set_intfdata(intf, mouse);
 	return 0;

 fail3:
 	usb_free_urb(mouse->irq);
 fail2:
 	usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
 fail1:
 	input_free_device(input_dev);
 	kfree(mouse);
 	return error;
 }

 static void usb_mouse_disconnect(struct usb_interface *intf)
 {
 	struct usb_mouse *mouse = usb_get_intfdata (intf);

 	usb_set_intfdata(intf, NULL);
 	if (mouse) {
 		usb_kill_urb(mouse->irq);
 		input_unregister_device(mouse->dev);
 		usb_free_urb(mouse->irq);
 		usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma);
 		kfree(mouse);
 	}
 }

 static struct usb_device_id usb_mouse_id_table [] = {
 	{ USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
 		USB_INTERFACE_PROTOCOL_MOUSE) },
 	{ }	/* Terminating entry */
 };

 MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);

 static struct usb_driver usb_mouse_driver = {
 	.name		= "usbmouse",
 	.probe		= usb_mouse_probe,
 	.disconnect	= usb_mouse_disconnect,
 	.id_table	= usb_mouse_id_table,
 };

 static int __init usb_mouse_init(void)
 {
 	int retval = usb_register(&usb_mouse_driver);
 	if (retval == 0)
 		info(DRIVER_VERSION ":" DRIVER_DESC);
 	return retval;
 }

 static void __exit usb_mouse_exit(void)
 {
 	usb_deregister(&usb_mouse_driver);
 }

 module_init(usb_mouse_init);
 module_exit(usb_mouse_exit);
	/*
	* $Id: usbmouse.c,v 1.15 2001/12/27 10:37:41 vojtech Exp $
	*
	* Copyright (c) 1999-2001 Vojtech Pavlik
	*
	* USB HIDBP Mouse support
	*/

	/*
	* 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/usb/input.h>
	#include <linux/hid.h>

	/*
	* Version Information
	*/
	#define DRIVER_VERSION "v1.6"
	#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
	#define DRIVER_DESC "USB HID Boot Protocol mouse driver"
	#define DRIVER_LICENSE "GPL"

	MODULE_AUTHOR(DRIVER_AUTHOR);
	MODULE_DESCRIPTION(DRIVER_DESC);
	MODULE_LICENSE(DRIVER_LICENSE);

	struct usb_mouse {
	char name[128];
	char phys[64];
	struct usb_device *usbdev;
	struct input_dev *dev;
	struct urb *irq;

	signed char *data;
	dma_addr_t data_dma;
	};

	static void usb_mouse_irq(struct urb *urb)
	{
	struct usb_mouse *mouse = urb->context;
	signed char *data = mouse->data;
	struct input_dev *dev = mouse->dev;
	int status;

	switch (urb->status) {
	case 0: /* success */
	break;
	case -ECONNRESET: /* unlink */
	case -ENOENT:
	case -ESHUTDOWN:
	return;
	/* -EPIPE: should clear the halt */
	default: /* error */
	goto resubmit;
	}

	input_report_key(dev, BTN_LEFT, data[0] & 0x01);
	input_report_key(dev, BTN_RIGHT, data[0] & 0x02);
	input_report_key(dev, BTN_MIDDLE, data[0] & 0x04);
	input_report_key(dev, BTN_SIDE, data[0] & 0x08);
	input_report_key(dev, BTN_EXTRA, data[0] & 0x10);

	input_report_rel(dev, REL_X, data[1]);
	input_report_rel(dev, REL_Y, data[2]);
	input_report_rel(dev, REL_WHEEL, data[3]);

	input_sync(dev);
	resubmit:
	status = usb_submit_urb (urb, GFP_ATOMIC);
	if (status)
	err ("can't resubmit intr, %s-%s/input0, status %d",
	mouse->usbdev->bus->bus_name,
	mouse->usbdev->devpath, status);
	}

	static int usb_mouse_open(struct input_dev *dev)
	{
	struct usb_mouse *mouse = input_get_drvdata(dev);

	mouse->irq->dev = mouse->usbdev;
	if (usb_submit_urb(mouse->irq, GFP_KERNEL))
	return -EIO;

	return 0;
	}

	static void usb_mouse_close(struct input_dev *dev)
	{
	struct usb_mouse *mouse = input_get_drvdata(dev);

	usb_kill_urb(mouse->irq);
	}

	static int usb_mouse_probe(struct usb_interface intf, const struct usb_device_id id)
	{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_host_interface *interface;
	struct usb_endpoint_descriptor *endpoint;
	struct usb_mouse *mouse;
	struct input_dev *input_dev;
	int pipe, maxp;
	int error = -ENOMEM;

	interface = intf->cur_altsetting;

	if (interface->desc.bNumEndpoints != 1)
	return -ENODEV;

	endpoint = &interface->endpoint[0].desc;
	if (!usb_endpoint_is_int_in(endpoint))
	return -ENODEV;

	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));

	mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!mouse \|\| !input_dev)
	goto fail1;

	mouse->data = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &mouse->data_dma);
	if (!mouse->data)
	goto fail1;

	mouse->irq = usb_alloc_urb(0, GFP_KERNEL);
	if (!mouse->irq)
	goto fail2;

	mouse->usbdev = dev;
	mouse->dev = input_dev;

	if (dev->manufacturer)
	strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name));

	if (dev->product) {
	if (dev->manufacturer)
	strlcat(mouse->name, " ", sizeof(mouse->name));
	strlcat(mouse->name, dev->product, sizeof(mouse->name));
	}

	if (!strlen(mouse->name))
	snprintf(mouse->name, sizeof(mouse->name),
	"USB HIDBP Mouse %04x:%04x",
	le16_to_cpu(dev->descriptor.idVendor),
	le16_to_cpu(dev->descriptor.idProduct));

	usb_make_path(dev, mouse->phys, sizeof(mouse->phys));
	strlcat(mouse->phys, "/input0", sizeof(mouse->phys));

	input_dev->name = mouse->name;
	input_dev->phys = mouse->phys;
	usb_to_input_id(dev, &input_dev->id);
	input_dev->dev.parent = &intf->dev;

	input_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REL);
	input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) \|
	BIT_MASK(BTN_RIGHT) \| BIT_MASK(BTN_MIDDLE);
	input_dev->relbit[0] = BIT_MASK(REL_X) \| BIT_MASK(REL_Y);
	input_dev->keybit[BIT_WORD(BTN_MOUSE)] \|= BIT_MASK(BTN_SIDE) \|
	BIT_MASK(BTN_EXTRA);
	input_dev->relbit[0] \|= BIT_MASK(REL_WHEEL);

	input_set_drvdata(input_dev, mouse);

	input_dev->open = usb_mouse_open;
	input_dev->close = usb_mouse_close;

	usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,
	(maxp > 8 ? 8 : maxp),
	usb_mouse_irq, mouse, endpoint->bInterval);
	mouse->irq->transfer_dma = mouse->data_dma;
	mouse->irq->transfer_flags \|= URB_NO_TRANSFER_DMA_MAP;

	error = input_register_device(mouse->dev);
	if (error)
	goto fail3;

	usb_set_intfdata(intf, mouse);
	return 0;

	fail3:
	usb_free_urb(mouse->irq);
	fail2:
	usb_buffer_free(dev, 8, mouse->data, mouse->data_dma);
	fail1:
	input_free_device(input_dev);
	kfree(mouse);
	return error;
	}

	static void usb_mouse_disconnect(struct usb_interface *intf)
	{
	struct usb_mouse *mouse = usb_get_intfdata (intf);

	usb_set_intfdata(intf, NULL);
	if (mouse) {
	usb_kill_urb(mouse->irq);
	input_unregister_device(mouse->dev);
	usb_free_urb(mouse->irq);
	usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma);
	kfree(mouse);
	}
	}

	static struct usb_device_id usb_mouse_id_table [] = {
	{ USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
	USB_INTERFACE_PROTOCOL_MOUSE) },
	{ } /* Terminating entry */
	};

	MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);

	static struct usb_driver usb_mouse_driver = {
	.name = "usbmouse",
	.probe = usb_mouse_probe,
	.disconnect = usb_mouse_disconnect,
	.id_table = usb_mouse_id_table,
	};

	static int __init usb_mouse_init(void)
	{
	int retval = usb_register(&usb_mouse_driver);
	if (retval == 0)
	info(DRIVER_VERSION ":" DRIVER_DESC);
	return retval;
	}

	static void __exit usb_mouse_exit(void)
	{
	usb_deregister(&usb_mouse_driver);
	}

	module_init(usb_mouse_init);
	module_exit(usb_mouse_exit);