1 /* 2 * Copyright (c) 1999-2001 Vojtech Pavlik 3 * 4 * USB HIDBP Mouse support 5 */ 6 7 /* 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 * Should you need to contact me, the author, you can do so either by 23 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 24 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 25 */ 26 27 #include <linux/kernel.h> 28 #include <linux/slab.h> 29 #include <linux/module.h> 30 #include <linux/init.h> 31 #include <linux/usb/input.h> 32 #include <linux/hid.h> 33 34 /* 35 * Version Information 36 */ 37 #define DRIVER_VERSION "v1.6" 38 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>" 39 #define DRIVER_DESC "USB HID Boot Protocol mouse driver" 40 #define DRIVER_LICENSE "GPL" 41 42 MODULE_AUTHOR(DRIVER_AUTHOR); 43 MODULE_DESCRIPTION(DRIVER_DESC); 44 MODULE_LICENSE(DRIVER_LICENSE); 45 46 struct usb_mouse { 47 char name[128]; 48 char phys[64]; 49 struct usb_device *usbdev; 50 struct input_dev *dev; 51 struct urb *irq; 52 53 signed char *data; 54 dma_addr_t data_dma; 55 }; 56 57 static void usb_mouse_irq(struct urb *urb) 58 { 59 struct usb_mouse *mouse = urb->context; 60 signed char *data = mouse->data; 61 struct input_dev *dev = mouse->dev; 62 int status; 63 64 switch (urb->status) { 65 case 0: /* success */ 66 break; 67 case -ECONNRESET: /* unlink */ 68 case -ENOENT: 69 case -ESHUTDOWN: 70 return; 71 /* -EPIPE: should clear the halt */ 72 default: /* error */ 73 goto resubmit; 74 } 75 76 input_report_key(dev, BTN_LEFT, data[0] & 0x01); 77 input_report_key(dev, BTN_RIGHT, data[0] & 0x02); 78 input_report_key(dev, BTN_MIDDLE, data[0] & 0x04); 79 input_report_key(dev, BTN_SIDE, data[0] & 0x08); 80 input_report_key(dev, BTN_EXTRA, data[0] & 0x10); 81 82 input_report_rel(dev, REL_X, data[1]); 83 input_report_rel(dev, REL_Y, data[2]); 84 input_report_rel(dev, REL_WHEEL, data[3]); 85 86 input_sync(dev); 87 resubmit: 88 status = usb_submit_urb (urb, GFP_ATOMIC); 89 if (status) 90 err ("can't resubmit intr, %s-%s/input0, status %d", 91 mouse->usbdev->bus->bus_name, 92 mouse->usbdev->devpath, status); 93 } 94 95 static int usb_mouse_open(struct input_dev *dev) 96 { 97 struct usb_mouse *mouse = input_get_drvdata(dev); 98 99 mouse->irq->dev = mouse->usbdev; 100 if (usb_submit_urb(mouse->irq, GFP_KERNEL)) 101 return -EIO; 102 103 return 0; 104 } 105 106 static void usb_mouse_close(struct input_dev *dev) 107 { 108 struct usb_mouse *mouse = input_get_drvdata(dev); 109 110 usb_kill_urb(mouse->irq); 111 } 112 113 static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id) 114 { 115 struct usb_device *dev = interface_to_usbdev(intf); 116 struct usb_host_interface *interface; 117 struct usb_endpoint_descriptor *endpoint; 118 struct usb_mouse *mouse; 119 struct input_dev *input_dev; 120 int pipe, maxp; 121 int error = -ENOMEM; 122 123 interface = intf->cur_altsetting; 124 125 if (interface->desc.bNumEndpoints != 1) 126 return -ENODEV; 127 128 endpoint = &interface->endpoint[0].desc; 129 if (!usb_endpoint_is_int_in(endpoint)) 130 return -ENODEV; 131 132 #ifdef CONFIG_USB_HID 133 if (usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor), 134 le16_to_cpu(dev->descriptor.idProduct)) 135 & (HID_QUIRK_IGNORE|HID_QUIRK_IGNORE_MOUSE)) { 136 return -ENODEV; 137 } 138 #endif 139 140 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); 141 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 142 143 mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL); 144 input_dev = input_allocate_device(); 145 if (!mouse || !input_dev) 146 goto fail1; 147 148 mouse->data = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &mouse->data_dma); 149 if (!mouse->data) 150 goto fail1; 151 152 mouse->irq = usb_alloc_urb(0, GFP_KERNEL); 153 if (!mouse->irq) 154 goto fail2; 155 156 mouse->usbdev = dev; 157 mouse->dev = input_dev; 158 159 if (dev->manufacturer) 160 strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name)); 161 162 if (dev->product) { 163 if (dev->manufacturer) 164 strlcat(mouse->name, " ", sizeof(mouse->name)); 165 strlcat(mouse->name, dev->product, sizeof(mouse->name)); 166 } 167 168 if (!strlen(mouse->name)) 169 snprintf(mouse->name, sizeof(mouse->name), 170 "USB HIDBP Mouse %04x:%04x", 171 le16_to_cpu(dev->descriptor.idVendor), 172 le16_to_cpu(dev->descriptor.idProduct)); 173 174 usb_make_path(dev, mouse->phys, sizeof(mouse->phys)); 175 strlcat(mouse->phys, "/input0", sizeof(mouse->phys)); 176 177 input_dev->name = mouse->name; 178 input_dev->phys = mouse->phys; 179 usb_to_input_id(dev, &input_dev->id); 180 input_dev->dev.parent = &intf->dev; 181 182 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 183 input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | 184 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); 185 input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 186 input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) | 187 BIT_MASK(BTN_EXTRA); 188 input_dev->relbit[0] |= BIT_MASK(REL_WHEEL); 189 190 input_set_drvdata(input_dev, mouse); 191 192 input_dev->open = usb_mouse_open; 193 input_dev->close = usb_mouse_close; 194 195 usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data, 196 (maxp > 8 ? 8 : maxp), 197 usb_mouse_irq, mouse, endpoint->bInterval); 198 mouse->irq->transfer_dma = mouse->data_dma; 199 mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 200 201 error = input_register_device(mouse->dev); 202 if (error) 203 goto fail3; 204 205 usb_set_intfdata(intf, mouse); 206 return 0; 207 208 fail3: 209 usb_free_urb(mouse->irq); 210 fail2: 211 usb_buffer_free(dev, 8, mouse->data, mouse->data_dma); 212 fail1: 213 input_free_device(input_dev); 214 kfree(mouse); 215 return error; 216 } 217 218 static void usb_mouse_disconnect(struct usb_interface *intf) 219 { 220 struct usb_mouse *mouse = usb_get_intfdata (intf); 221 222 usb_set_intfdata(intf, NULL); 223 if (mouse) { 224 usb_kill_urb(mouse->irq); 225 input_unregister_device(mouse->dev); 226 usb_free_urb(mouse->irq); 227 usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma); 228 kfree(mouse); 229 } 230 } 231 232 static struct usb_device_id usb_mouse_id_table [] = { 233 { USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT, 234 USB_INTERFACE_PROTOCOL_MOUSE) }, 235 { } /* Terminating entry */ 236 }; 237 238 MODULE_DEVICE_TABLE (usb, usb_mouse_id_table); 239 240 static struct usb_driver usb_mouse_driver = { 241 .name = "usbmouse", 242 .probe = usb_mouse_probe, 243 .disconnect = usb_mouse_disconnect, 244 .id_table = usb_mouse_id_table, 245 }; 246 247 static int __init usb_mouse_init(void) 248 { 249 int retval = usb_register(&usb_mouse_driver); 250 if (retval == 0) 251 info(DRIVER_VERSION ":" DRIVER_DESC); 252 return retval; 253 } 254 255 static void __exit usb_mouse_exit(void) 256 { 257 usb_deregister(&usb_mouse_driver); 258 } 259 260 module_init(usb_mouse_init); 261 module_exit(usb_mouse_exit); 262