1 /* 2 * $Id: usbmouse.c,v 1.15 2001/12/27 10:37:41 vojtech Exp $ 3 * 4 * Copyright (c) 1999-2001 Vojtech Pavlik 5 * 6 * USB HIDBP Mouse support 7 */ 8 9 /* 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 * Should you need to contact me, the author, you can do so either by 25 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 26 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 27 */ 28 29 #include <linux/kernel.h> 30 #include <linux/slab.h> 31 #include <linux/module.h> 32 #include <linux/init.h> 33 #include <linux/usb/input.h> 34 #include <linux/hid.h> 35 36 /* 37 * Version Information 38 */ 39 #define DRIVER_VERSION "v1.6" 40 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>" 41 #define DRIVER_DESC "USB HID Boot Protocol mouse driver" 42 #define DRIVER_LICENSE "GPL" 43 44 MODULE_AUTHOR(DRIVER_AUTHOR); 45 MODULE_DESCRIPTION(DRIVER_DESC); 46 MODULE_LICENSE(DRIVER_LICENSE); 47 48 struct usb_mouse { 49 char name[128]; 50 char phys[64]; 51 struct usb_device *usbdev; 52 struct input_dev *dev; 53 struct urb *irq; 54 55 signed char *data; 56 dma_addr_t data_dma; 57 }; 58 59 static void usb_mouse_irq(struct urb *urb) 60 { 61 struct usb_mouse *mouse = urb->context; 62 signed char *data = mouse->data; 63 struct input_dev *dev = mouse->dev; 64 int status; 65 66 switch (urb->status) { 67 case 0: /* success */ 68 break; 69 case -ECONNRESET: /* unlink */ 70 case -ENOENT: 71 case -ESHUTDOWN: 72 return; 73 /* -EPIPE: should clear the halt */ 74 default: /* error */ 75 goto resubmit; 76 } 77 78 input_report_key(dev, BTN_LEFT, data[0] & 0x01); 79 input_report_key(dev, BTN_RIGHT, data[0] & 0x02); 80 input_report_key(dev, BTN_MIDDLE, data[0] & 0x04); 81 input_report_key(dev, BTN_SIDE, data[0] & 0x08); 82 input_report_key(dev, BTN_EXTRA, data[0] & 0x10); 83 84 input_report_rel(dev, REL_X, data[1]); 85 input_report_rel(dev, REL_Y, data[2]); 86 input_report_rel(dev, REL_WHEEL, data[3]); 87 88 input_sync(dev); 89 resubmit: 90 status = usb_submit_urb (urb, GFP_ATOMIC); 91 if (status) 92 err ("can't resubmit intr, %s-%s/input0, status %d", 93 mouse->usbdev->bus->bus_name, 94 mouse->usbdev->devpath, status); 95 } 96 97 static int usb_mouse_open(struct input_dev *dev) 98 { 99 struct usb_mouse *mouse = input_get_drvdata(dev); 100 101 mouse->irq->dev = mouse->usbdev; 102 if (usb_submit_urb(mouse->irq, GFP_KERNEL)) 103 return -EIO; 104 105 return 0; 106 } 107 108 static void usb_mouse_close(struct input_dev *dev) 109 { 110 struct usb_mouse *mouse = input_get_drvdata(dev); 111 112 usb_kill_urb(mouse->irq); 113 } 114 115 static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id) 116 { 117 struct usb_device *dev = interface_to_usbdev(intf); 118 struct usb_host_interface *interface; 119 struct usb_endpoint_descriptor *endpoint; 120 struct usb_mouse *mouse; 121 struct input_dev *input_dev; 122 int pipe, maxp; 123 int error = -ENOMEM; 124 125 interface = intf->cur_altsetting; 126 127 if (interface->desc.bNumEndpoints != 1) 128 return -ENODEV; 129 130 endpoint = &interface->endpoint[0].desc; 131 if (!usb_endpoint_is_int_in(endpoint)) 132 return -ENODEV; 133 134 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); 135 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 136 137 mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL); 138 input_dev = input_allocate_device(); 139 if (!mouse || !input_dev) 140 goto fail1; 141 142 mouse->data = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &mouse->data_dma); 143 if (!mouse->data) 144 goto fail1; 145 146 mouse->irq = usb_alloc_urb(0, GFP_KERNEL); 147 if (!mouse->irq) 148 goto fail2; 149 150 mouse->usbdev = dev; 151 mouse->dev = input_dev; 152 153 if (dev->manufacturer) 154 strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name)); 155 156 if (dev->product) { 157 if (dev->manufacturer) 158 strlcat(mouse->name, " ", sizeof(mouse->name)); 159 strlcat(mouse->name, dev->product, sizeof(mouse->name)); 160 } 161 162 if (!strlen(mouse->name)) 163 snprintf(mouse->name, sizeof(mouse->name), 164 "USB HIDBP Mouse %04x:%04x", 165 le16_to_cpu(dev->descriptor.idVendor), 166 le16_to_cpu(dev->descriptor.idProduct)); 167 168 usb_make_path(dev, mouse->phys, sizeof(mouse->phys)); 169 strlcat(mouse->phys, "/input0", sizeof(mouse->phys)); 170 171 input_dev->name = mouse->name; 172 input_dev->phys = mouse->phys; 173 usb_to_input_id(dev, &input_dev->id); 174 input_dev->dev.parent = &intf->dev; 175 176 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); 177 input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE); 178 input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y); 179 input_dev->keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA); 180 input_dev->relbit[0] |= BIT(REL_WHEEL); 181 182 input_set_drvdata(input_dev, mouse); 183 184 input_dev->open = usb_mouse_open; 185 input_dev->close = usb_mouse_close; 186 187 usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data, 188 (maxp > 8 ? 8 : maxp), 189 usb_mouse_irq, mouse, endpoint->bInterval); 190 mouse->irq->transfer_dma = mouse->data_dma; 191 mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 192 193 error = input_register_device(mouse->dev); 194 if (error) 195 goto fail3; 196 197 usb_set_intfdata(intf, mouse); 198 return 0; 199 200 fail3: 201 usb_free_urb(mouse->irq); 202 fail2: 203 usb_buffer_free(dev, 8, mouse->data, mouse->data_dma); 204 fail1: 205 input_free_device(input_dev); 206 kfree(mouse); 207 return error; 208 } 209 210 static void usb_mouse_disconnect(struct usb_interface *intf) 211 { 212 struct usb_mouse *mouse = usb_get_intfdata (intf); 213 214 usb_set_intfdata(intf, NULL); 215 if (mouse) { 216 usb_kill_urb(mouse->irq); 217 input_unregister_device(mouse->dev); 218 usb_free_urb(mouse->irq); 219 usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma); 220 kfree(mouse); 221 } 222 } 223 224 static struct usb_device_id usb_mouse_id_table [] = { 225 { USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT, 226 USB_INTERFACE_PROTOCOL_MOUSE) }, 227 { } /* Terminating entry */ 228 }; 229 230 MODULE_DEVICE_TABLE (usb, usb_mouse_id_table); 231 232 static struct usb_driver usb_mouse_driver = { 233 .name = "usbmouse", 234 .probe = usb_mouse_probe, 235 .disconnect = usb_mouse_disconnect, 236 .id_table = usb_mouse_id_table, 237 }; 238 239 static int __init usb_mouse_init(void) 240 { 241 int retval = usb_register(&usb_mouse_driver); 242 if (retval == 0) 243 info(DRIVER_VERSION ":" DRIVER_DESC); 244 return retval; 245 } 246 247 static void __exit usb_mouse_exit(void) 248 { 249 usb_deregister(&usb_mouse_driver); 250 } 251 252 module_init(usb_mouse_init); 253 module_exit(usb_mouse_exit); 254