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 /* for apple IDs */ 35 #ifdef CONFIG_USB_HID_MODULE 36 #include "../hid-ids.h" 37 #endif 38 39 /* 40 * Version Information 41 */ 42 #define DRIVER_VERSION "v1.6" 43 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>" 44 #define DRIVER_DESC "USB HID Boot Protocol mouse driver" 45 #define DRIVER_LICENSE "GPL" 46 47 MODULE_AUTHOR(DRIVER_AUTHOR); 48 MODULE_DESCRIPTION(DRIVER_DESC); 49 MODULE_LICENSE(DRIVER_LICENSE); 50 51 struct usb_mouse { 52 char name[128]; 53 char phys[64]; 54 struct usb_device *usbdev; 55 struct input_dev *dev; 56 struct urb *irq; 57 58 signed char *data; 59 dma_addr_t data_dma; 60 }; 61 62 static void usb_mouse_irq(struct urb *urb) 63 { 64 struct usb_mouse *mouse = urb->context; 65 signed char *data = mouse->data; 66 struct input_dev *dev = mouse->dev; 67 int status; 68 69 switch (urb->status) { 70 case 0: /* success */ 71 break; 72 case -ECONNRESET: /* unlink */ 73 case -ENOENT: 74 case -ESHUTDOWN: 75 return; 76 /* -EPIPE: should clear the halt */ 77 default: /* error */ 78 goto resubmit; 79 } 80 81 input_report_key(dev, BTN_LEFT, data[0] & 0x01); 82 input_report_key(dev, BTN_RIGHT, data[0] & 0x02); 83 input_report_key(dev, BTN_MIDDLE, data[0] & 0x04); 84 input_report_key(dev, BTN_SIDE, data[0] & 0x08); 85 input_report_key(dev, BTN_EXTRA, data[0] & 0x10); 86 87 input_report_rel(dev, REL_X, data[1]); 88 input_report_rel(dev, REL_Y, data[2]); 89 input_report_rel(dev, REL_WHEEL, data[3]); 90 91 input_sync(dev); 92 resubmit: 93 status = usb_submit_urb (urb, GFP_ATOMIC); 94 if (status) 95 err ("can't resubmit intr, %s-%s/input0, status %d", 96 mouse->usbdev->bus->bus_name, 97 mouse->usbdev->devpath, status); 98 } 99 100 static int usb_mouse_open(struct input_dev *dev) 101 { 102 struct usb_mouse *mouse = input_get_drvdata(dev); 103 104 mouse->irq->dev = mouse->usbdev; 105 if (usb_submit_urb(mouse->irq, GFP_KERNEL)) 106 return -EIO; 107 108 return 0; 109 } 110 111 static void usb_mouse_close(struct input_dev *dev) 112 { 113 struct usb_mouse *mouse = input_get_drvdata(dev); 114 115 usb_kill_urb(mouse->irq); 116 } 117 118 static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id) 119 { 120 struct usb_device *dev = interface_to_usbdev(intf); 121 struct usb_host_interface *interface; 122 struct usb_endpoint_descriptor *endpoint; 123 struct usb_mouse *mouse; 124 struct input_dev *input_dev; 125 int pipe, maxp; 126 int error = -ENOMEM; 127 128 interface = intf->cur_altsetting; 129 130 if (interface->desc.bNumEndpoints != 1) 131 return -ENODEV; 132 133 endpoint = &interface->endpoint[0].desc; 134 if (!usb_endpoint_is_int_in(endpoint)) 135 return -ENODEV; 136 137 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); 138 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 139 140 mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL); 141 input_dev = input_allocate_device(); 142 if (!mouse || !input_dev) 143 goto fail1; 144 145 mouse->data = usb_buffer_alloc(dev, 8, GFP_ATOMIC, &mouse->data_dma); 146 if (!mouse->data) 147 goto fail1; 148 149 mouse->irq = usb_alloc_urb(0, GFP_KERNEL); 150 if (!mouse->irq) 151 goto fail2; 152 153 mouse->usbdev = dev; 154 mouse->dev = input_dev; 155 156 if (dev->manufacturer) 157 strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name)); 158 159 if (dev->product) { 160 if (dev->manufacturer) 161 strlcat(mouse->name, " ", sizeof(mouse->name)); 162 strlcat(mouse->name, dev->product, sizeof(mouse->name)); 163 } 164 165 if (!strlen(mouse->name)) 166 snprintf(mouse->name, sizeof(mouse->name), 167 "USB HIDBP Mouse %04x:%04x", 168 le16_to_cpu(dev->descriptor.idVendor), 169 le16_to_cpu(dev->descriptor.idProduct)); 170 171 usb_make_path(dev, mouse->phys, sizeof(mouse->phys)); 172 strlcat(mouse->phys, "/input0", sizeof(mouse->phys)); 173 174 input_dev->name = mouse->name; 175 input_dev->phys = mouse->phys; 176 usb_to_input_id(dev, &input_dev->id); 177 input_dev->dev.parent = &intf->dev; 178 179 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 180 input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | 181 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); 182 input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 183 input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) | 184 BIT_MASK(BTN_EXTRA); 185 input_dev->relbit[0] |= BIT_MASK(REL_WHEEL); 186 187 input_set_drvdata(input_dev, mouse); 188 189 input_dev->open = usb_mouse_open; 190 input_dev->close = usb_mouse_close; 191 192 usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data, 193 (maxp > 8 ? 8 : maxp), 194 usb_mouse_irq, mouse, endpoint->bInterval); 195 mouse->irq->transfer_dma = mouse->data_dma; 196 mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 197 198 error = input_register_device(mouse->dev); 199 if (error) 200 goto fail3; 201 202 usb_set_intfdata(intf, mouse); 203 return 0; 204 205 fail3: 206 usb_free_urb(mouse->irq); 207 fail2: 208 usb_buffer_free(dev, 8, mouse->data, mouse->data_dma); 209 fail1: 210 input_free_device(input_dev); 211 kfree(mouse); 212 return error; 213 } 214 215 static void usb_mouse_disconnect(struct usb_interface *intf) 216 { 217 struct usb_mouse *mouse = usb_get_intfdata (intf); 218 219 usb_set_intfdata(intf, NULL); 220 if (mouse) { 221 usb_kill_urb(mouse->irq); 222 input_unregister_device(mouse->dev); 223 usb_free_urb(mouse->irq); 224 usb_buffer_free(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma); 225 kfree(mouse); 226 } 227 } 228 229 static struct usb_device_id usb_mouse_id_table [] = { 230 { USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT, 231 USB_INTERFACE_PROTOCOL_MOUSE) }, 232 { } /* Terminating entry */ 233 }; 234 235 MODULE_DEVICE_TABLE (usb, usb_mouse_id_table); 236 237 static struct usb_driver usb_mouse_driver = { 238 .name = "usbmouse", 239 .probe = usb_mouse_probe, 240 .disconnect = usb_mouse_disconnect, 241 .id_table = usb_mouse_id_table, 242 }; 243 244 static int __init usb_mouse_init(void) 245 { 246 int retval = usb_register(&usb_mouse_driver); 247 if (retval == 0) 248 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 249 DRIVER_DESC "\n"); 250 return retval; 251 } 252 253 static void __exit usb_mouse_exit(void) 254 { 255 usb_deregister(&usb_mouse_driver); 256 } 257 258 module_init(usb_mouse_init); 259 module_exit(usb_mouse_exit); 260