1 /* 2 * Copyright (c) 2001-2005 Edouard TISSERANT <edouard.tisserant@wanadoo.fr> 3 * Copyright (c) 2004-2005 Stephane VOLTZ <svoltz@numericable.fr> 4 * 5 * USB Acecad "Acecad Flair" tablet support 6 * 7 * Changelog: 8 * v3.2 - Added sysfs support 9 */ 10 11 /* 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 * 26 */ 27 28 #include <linux/kernel.h> 29 #include <linux/slab.h> 30 #include <linux/module.h> 31 #include <linux/init.h> 32 #include <linux/usb/input.h> 33 34 /* 35 * Version Information 36 */ 37 #define DRIVER_VERSION "v3.2" 38 #define DRIVER_DESC "USB Acecad Flair tablet driver" 39 #define DRIVER_LICENSE "GPL" 40 #define DRIVER_AUTHOR "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>" 41 42 MODULE_AUTHOR(DRIVER_AUTHOR); 43 MODULE_DESCRIPTION(DRIVER_DESC); 44 MODULE_LICENSE(DRIVER_LICENSE); 45 46 #define USB_VENDOR_ID_ACECAD 0x0460 47 #define USB_DEVICE_ID_FLAIR 0x0004 48 #define USB_DEVICE_ID_302 0x0008 49 50 struct usb_acecad { 51 char name[128]; 52 char phys[64]; 53 struct usb_device *usbdev; 54 struct input_dev *input; 55 struct urb *irq; 56 57 unsigned char *data; 58 dma_addr_t data_dma; 59 }; 60 61 static void usb_acecad_irq(struct urb *urb) 62 { 63 struct usb_acecad *acecad = urb->context; 64 unsigned char *data = acecad->data; 65 struct input_dev *dev = acecad->input; 66 int prox, status; 67 68 switch (urb->status) { 69 case 0: 70 /* success */ 71 break; 72 case -ECONNRESET: 73 case -ENOENT: 74 case -ESHUTDOWN: 75 /* this urb is terminated, clean up */ 76 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); 77 return; 78 default: 79 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status); 80 goto resubmit; 81 } 82 83 prox = (data[0] & 0x04) >> 2; 84 input_report_key(dev, BTN_TOOL_PEN, prox); 85 86 if (prox) { 87 int x = data[1] | (data[2] << 8); 88 int y = data[3] | (data[4] << 8); 89 /* Pressure should compute the same way for flair and 302 */ 90 int pressure = data[5] | (data[6] << 8); 91 int touch = data[0] & 0x01; 92 int stylus = (data[0] & 0x10) >> 4; 93 int stylus2 = (data[0] & 0x20) >> 5; 94 input_report_abs(dev, ABS_X, x); 95 input_report_abs(dev, ABS_Y, y); 96 input_report_abs(dev, ABS_PRESSURE, pressure); 97 input_report_key(dev, BTN_TOUCH, touch); 98 input_report_key(dev, BTN_STYLUS, stylus); 99 input_report_key(dev, BTN_STYLUS2, stylus2); 100 } 101 102 /* event termination */ 103 input_sync(dev); 104 105 resubmit: 106 status = usb_submit_urb(urb, GFP_ATOMIC); 107 if (status) 108 err("can't resubmit intr, %s-%s/input0, status %d", 109 acecad->usbdev->bus->bus_name, acecad->usbdev->devpath, status); 110 } 111 112 static int usb_acecad_open(struct input_dev *dev) 113 { 114 struct usb_acecad *acecad = input_get_drvdata(dev); 115 116 acecad->irq->dev = acecad->usbdev; 117 if (usb_submit_urb(acecad->irq, GFP_KERNEL)) 118 return -EIO; 119 120 return 0; 121 } 122 123 static void usb_acecad_close(struct input_dev *dev) 124 { 125 struct usb_acecad *acecad = input_get_drvdata(dev); 126 127 usb_kill_urb(acecad->irq); 128 } 129 130 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id) 131 { 132 struct usb_device *dev = interface_to_usbdev(intf); 133 struct usb_host_interface *interface = intf->cur_altsetting; 134 struct usb_endpoint_descriptor *endpoint; 135 struct usb_acecad *acecad; 136 struct input_dev *input_dev; 137 int pipe, maxp; 138 int err = -ENOMEM; 139 140 if (interface->desc.bNumEndpoints != 1) 141 return -ENODEV; 142 143 endpoint = &interface->endpoint[0].desc; 144 145 if (!usb_endpoint_is_int_in(endpoint)) 146 return -ENODEV; 147 148 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); 149 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 150 151 acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL); 152 input_dev = input_allocate_device(); 153 if (!acecad || !input_dev) { 154 err = -ENOMEM; 155 goto fail1; 156 } 157 158 acecad->data = usb_buffer_alloc(dev, 8, GFP_KERNEL, &acecad->data_dma); 159 if (!acecad->data) { 160 err= -ENOMEM; 161 goto fail1; 162 } 163 164 acecad->irq = usb_alloc_urb(0, GFP_KERNEL); 165 if (!acecad->irq) { 166 err = -ENOMEM; 167 goto fail2; 168 } 169 170 acecad->usbdev = dev; 171 acecad->input = input_dev; 172 173 if (dev->manufacturer) 174 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name)); 175 176 if (dev->product) { 177 if (dev->manufacturer) 178 strlcat(acecad->name, " ", sizeof(acecad->name)); 179 strlcat(acecad->name, dev->product, sizeof(acecad->name)); 180 } 181 182 usb_make_path(dev, acecad->phys, sizeof(acecad->phys)); 183 strlcat(acecad->phys, "/input0", sizeof(acecad->phys)); 184 185 input_dev->name = acecad->name; 186 input_dev->phys = acecad->phys; 187 usb_to_input_id(dev, &input_dev->id); 188 input_dev->dev.parent = &intf->dev; 189 190 input_set_drvdata(input_dev, acecad); 191 192 input_dev->open = usb_acecad_open; 193 input_dev->close = usb_acecad_close; 194 195 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 196 input_dev->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) | 197 BIT_MASK(ABS_PRESSURE); 198 input_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | 199 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); 200 input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) | 201 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) | 202 BIT_MASK(BTN_STYLUS2); 203 204 switch (id->driver_info) { 205 case 0: 206 input_dev->absmax[ABS_X] = 5000; 207 input_dev->absmax[ABS_Y] = 3750; 208 input_dev->absmax[ABS_PRESSURE] = 512; 209 if (!strlen(acecad->name)) 210 snprintf(acecad->name, sizeof(acecad->name), 211 "USB Acecad Flair Tablet %04x:%04x", 212 le16_to_cpu(dev->descriptor.idVendor), 213 le16_to_cpu(dev->descriptor.idProduct)); 214 break; 215 case 1: 216 input_dev->absmax[ABS_X] = 3000; 217 input_dev->absmax[ABS_Y] = 2250; 218 input_dev->absmax[ABS_PRESSURE] = 1024; 219 if (!strlen(acecad->name)) 220 snprintf(acecad->name, sizeof(acecad->name), 221 "USB Acecad 302 Tablet %04x:%04x", 222 le16_to_cpu(dev->descriptor.idVendor), 223 le16_to_cpu(dev->descriptor.idProduct)); 224 break; 225 } 226 227 input_dev->absfuzz[ABS_X] = 4; 228 input_dev->absfuzz[ABS_Y] = 4; 229 230 usb_fill_int_urb(acecad->irq, dev, pipe, 231 acecad->data, maxp > 8 ? 8 : maxp, 232 usb_acecad_irq, acecad, endpoint->bInterval); 233 acecad->irq->transfer_dma = acecad->data_dma; 234 acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 235 236 err = input_register_device(acecad->input); 237 if (err) 238 goto fail2; 239 240 usb_set_intfdata(intf, acecad); 241 242 return 0; 243 244 fail2: usb_buffer_free(dev, 8, acecad->data, acecad->data_dma); 245 fail1: input_free_device(input_dev); 246 kfree(acecad); 247 return err; 248 } 249 250 static void usb_acecad_disconnect(struct usb_interface *intf) 251 { 252 struct usb_acecad *acecad = usb_get_intfdata(intf); 253 254 usb_set_intfdata(intf, NULL); 255 if (acecad) { 256 usb_kill_urb(acecad->irq); 257 input_unregister_device(acecad->input); 258 usb_free_urb(acecad->irq); 259 usb_buffer_free(interface_to_usbdev(intf), 10, acecad->data, acecad->data_dma); 260 kfree(acecad); 261 } 262 } 263 264 static struct usb_device_id usb_acecad_id_table [] = { 265 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 }, 266 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 }, 267 { } 268 }; 269 270 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table); 271 272 static struct usb_driver usb_acecad_driver = { 273 .name = "usb_acecad", 274 .probe = usb_acecad_probe, 275 .disconnect = usb_acecad_disconnect, 276 .id_table = usb_acecad_id_table, 277 }; 278 279 static int __init usb_acecad_init(void) 280 { 281 int result = usb_register(&usb_acecad_driver); 282 if (result == 0) 283 info(DRIVER_VERSION ":" DRIVER_DESC); 284 return result; 285 } 286 287 static void __exit usb_acecad_exit(void) 288 { 289 usb_deregister(&usb_acecad_driver); 290 } 291 292 module_init(usb_acecad_init); 293 module_exit(usb_acecad_exit); 294