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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (c) 1999-2001 Vojtech Pavlik4 *5 * USB HIDBP Mouse support6 */7 8/*9 *10 * Should you need to contact me, the author, you can do so either by11 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:12 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic13 */14 15#include <linux/kernel.h>16#include <linux/slab.h>17#include <linux/module.h>18#include <linux/init.h>19#include <linux/usb/input.h>20#include <linux/hid.h>21 22/* for apple IDs */23#ifdef CONFIG_USB_HID_MODULE24#include "../hid-ids.h"25#endif26 27/*28 * Version Information29 */30#define DRIVER_VERSION "v1.6"31#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"32#define DRIVER_DESC "USB HID Boot Protocol mouse driver"33 34MODULE_AUTHOR(DRIVER_AUTHOR);35MODULE_DESCRIPTION(DRIVER_DESC);36MODULE_LICENSE("GPL");37 38struct usb_mouse {39 char name[128];40 char phys[64];41 struct usb_device *usbdev;42 struct input_dev *dev;43 struct urb *irq;44 45 signed char *data;46 dma_addr_t data_dma;47};48 49static void usb_mouse_irq(struct urb *urb)50{51 struct usb_mouse *mouse = urb->context;52 signed char *data = mouse->data;53 struct input_dev *dev = mouse->dev;54 int status;55 56 switch (urb->status) {57 case 0: /* success */58 break;59 case -ECONNRESET: /* unlink */60 case -ENOENT:61 case -ESHUTDOWN:62 return;63 /* -EPIPE: should clear the halt */64 default: /* error */65 goto resubmit;66 }67 68 input_report_key(dev, BTN_LEFT, data[0] & 0x01);69 input_report_key(dev, BTN_RIGHT, data[0] & 0x02);70 input_report_key(dev, BTN_MIDDLE, data[0] & 0x04);71 input_report_key(dev, BTN_SIDE, data[0] & 0x08);72 input_report_key(dev, BTN_EXTRA, data[0] & 0x10);73 74 input_report_rel(dev, REL_X, data[1]);75 input_report_rel(dev, REL_Y, data[2]);76 input_report_rel(dev, REL_WHEEL, data[3]);77 78 input_sync(dev);79resubmit:80 status = usb_submit_urb (urb, GFP_ATOMIC);81 if (status)82 dev_err(&mouse->usbdev->dev,83 "can't resubmit intr, %s-%s/input0, status %d\n",84 mouse->usbdev->bus->bus_name,85 mouse->usbdev->devpath, status);86}87 88static int usb_mouse_open(struct input_dev *dev)89{90 struct usb_mouse *mouse = input_get_drvdata(dev);91 92 mouse->irq->dev = mouse->usbdev;93 if (usb_submit_urb(mouse->irq, GFP_KERNEL))94 return -EIO;95 96 return 0;97}98 99static void usb_mouse_close(struct input_dev *dev)100{101 struct usb_mouse *mouse = input_get_drvdata(dev);102 103 usb_kill_urb(mouse->irq);104}105 106static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id)107{108 struct usb_device *dev = interface_to_usbdev(intf);109 struct usb_host_interface *interface;110 struct usb_endpoint_descriptor *endpoint;111 struct usb_mouse *mouse;112 struct input_dev *input_dev;113 int pipe, maxp;114 int error = -ENOMEM;115 116 interface = intf->cur_altsetting;117 118 if (interface->desc.bNumEndpoints != 1)119 return -ENODEV;120 121 endpoint = &interface->endpoint[0].desc;122 if (!usb_endpoint_is_int_in(endpoint))123 return -ENODEV;124 125 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);126 maxp = usb_maxpacket(dev, pipe);127 128 mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);129 input_dev = input_allocate_device();130 if (!mouse || !input_dev)131 goto fail1;132 133 mouse->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &mouse->data_dma);134 if (!mouse->data)135 goto fail1;136 137 mouse->irq = usb_alloc_urb(0, GFP_KERNEL);138 if (!mouse->irq)139 goto fail2;140 141 mouse->usbdev = dev;142 mouse->dev = input_dev;143 144 if (dev->manufacturer)145 strscpy(mouse->name, dev->manufacturer, sizeof(mouse->name));146 147 if (dev->product) {148 if (dev->manufacturer)149 strlcat(mouse->name, " ", sizeof(mouse->name));150 strlcat(mouse->name, dev->product, sizeof(mouse->name));151 }152 153 if (!strlen(mouse->name))154 snprintf(mouse->name, sizeof(mouse->name),155 "USB HIDBP Mouse %04x:%04x",156 le16_to_cpu(dev->descriptor.idVendor),157 le16_to_cpu(dev->descriptor.idProduct));158 159 usb_make_path(dev, mouse->phys, sizeof(mouse->phys));160 strlcat(mouse->phys, "/input0", sizeof(mouse->phys));161 162 input_dev->name = mouse->name;163 input_dev->phys = mouse->phys;164 usb_to_input_id(dev, &input_dev->id);165 input_dev->dev.parent = &intf->dev;166 167 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);168 input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |169 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);170 input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);171 input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) |172 BIT_MASK(BTN_EXTRA);173 input_dev->relbit[0] |= BIT_MASK(REL_WHEEL);174 175 input_set_drvdata(input_dev, mouse);176 177 input_dev->open = usb_mouse_open;178 input_dev->close = usb_mouse_close;179 180 usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,181 (maxp > 8 ? 8 : maxp),182 usb_mouse_irq, mouse, endpoint->bInterval);183 mouse->irq->transfer_dma = mouse->data_dma;184 mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;185 186 error = input_register_device(mouse->dev);187 if (error)188 goto fail3;189 190 usb_set_intfdata(intf, mouse);191 return 0;192 193fail3: 194 usb_free_urb(mouse->irq);195fail2: 196 usb_free_coherent(dev, 8, mouse->data, mouse->data_dma);197fail1: 198 input_free_device(input_dev);199 kfree(mouse);200 return error;201}202 203static void usb_mouse_disconnect(struct usb_interface *intf)204{205 struct usb_mouse *mouse = usb_get_intfdata (intf);206 207 usb_set_intfdata(intf, NULL);208 if (mouse) {209 usb_kill_urb(mouse->irq);210 input_unregister_device(mouse->dev);211 usb_free_urb(mouse->irq);212 usb_free_coherent(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma);213 kfree(mouse);214 }215}216 217static const struct usb_device_id usb_mouse_id_table[] = {218 { USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,219 USB_INTERFACE_PROTOCOL_MOUSE) },220 { } /* Terminating entry */221};222 223MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);224 225static struct usb_driver usb_mouse_driver = {226 .name = "usbmouse",227 .probe = usb_mouse_probe,228 .disconnect = usb_mouse_disconnect,229 .id_table = usb_mouse_id_table,230};231 232module_usb_driver(usb_mouse_driver);233