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/usb/input.h> 32 33 /* 34 * Version Information 35 */ 36 #define DRIVER_VERSION "v3.2" 37 #define DRIVER_DESC "USB Acecad Flair tablet driver" 38 #define DRIVER_AUTHOR "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>" 39 40 MODULE_AUTHOR(DRIVER_AUTHOR); 41 MODULE_DESCRIPTION(DRIVER_DESC); 42 MODULE_LICENSE("GPL"); 43 44 #define USB_VENDOR_ID_ACECAD 0x0460 45 #define USB_DEVICE_ID_FLAIR 0x0004 46 #define USB_DEVICE_ID_302 0x0008 47 48 struct usb_acecad { 49 char name[128]; 50 char phys[64]; 51 struct usb_interface *intf; 52 struct input_dev *input; 53 struct urb *irq; 54 55 unsigned char *data; 56 dma_addr_t data_dma; 57 }; 58 59 static void usb_acecad_irq(struct urb *urb) 60 { 61 struct usb_acecad *acecad = urb->context; 62 unsigned char *data = acecad->data; 63 struct input_dev *dev = acecad->input; 64 struct usb_interface *intf = acecad->intf; 65 struct usb_device *udev = interface_to_usbdev(intf); 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 dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n", 77 __func__, urb->status); 78 return; 79 default: 80 dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n", 81 __func__, urb->status); 82 goto resubmit; 83 } 84 85 prox = (data[0] & 0x04) >> 2; 86 input_report_key(dev, BTN_TOOL_PEN, prox); 87 88 if (prox) { 89 int x = data[1] | (data[2] << 8); 90 int y = data[3] | (data[4] << 8); 91 /* Pressure should compute the same way for flair and 302 */ 92 int pressure = data[5] | (data[6] << 8); 93 int touch = data[0] & 0x01; 94 int stylus = (data[0] & 0x10) >> 4; 95 int stylus2 = (data[0] & 0x20) >> 5; 96 input_report_abs(dev, ABS_X, x); 97 input_report_abs(dev, ABS_Y, y); 98 input_report_abs(dev, ABS_PRESSURE, pressure); 99 input_report_key(dev, BTN_TOUCH, touch); 100 input_report_key(dev, BTN_STYLUS, stylus); 101 input_report_key(dev, BTN_STYLUS2, stylus2); 102 } 103 104 /* event termination */ 105 input_sync(dev); 106 107 resubmit: 108 status = usb_submit_urb(urb, GFP_ATOMIC); 109 if (status) 110 dev_err(&intf->dev, 111 "can't resubmit intr, %s-%s/input0, status %d\n", 112 udev->bus->bus_name, 113 udev->devpath, status); 114 } 115 116 static int usb_acecad_open(struct input_dev *dev) 117 { 118 struct usb_acecad *acecad = input_get_drvdata(dev); 119 120 acecad->irq->dev = interface_to_usbdev(acecad->intf); 121 if (usb_submit_urb(acecad->irq, GFP_KERNEL)) 122 return -EIO; 123 124 return 0; 125 } 126 127 static void usb_acecad_close(struct input_dev *dev) 128 { 129 struct usb_acecad *acecad = input_get_drvdata(dev); 130 131 usb_kill_urb(acecad->irq); 132 } 133 134 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id) 135 { 136 struct usb_device *dev = interface_to_usbdev(intf); 137 struct usb_host_interface *interface = intf->cur_altsetting; 138 struct usb_endpoint_descriptor *endpoint; 139 struct usb_acecad *acecad; 140 struct input_dev *input_dev; 141 int pipe, maxp; 142 int err; 143 144 if (interface->desc.bNumEndpoints != 1) 145 return -ENODEV; 146 147 endpoint = &interface->endpoint[0].desc; 148 149 if (!usb_endpoint_is_int_in(endpoint)) 150 return -ENODEV; 151 152 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); 153 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 154 155 acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL); 156 input_dev = input_allocate_device(); 157 if (!acecad || !input_dev) { 158 err = -ENOMEM; 159 goto fail1; 160 } 161 162 acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma); 163 if (!acecad->data) { 164 err= -ENOMEM; 165 goto fail1; 166 } 167 168 acecad->irq = usb_alloc_urb(0, GFP_KERNEL); 169 if (!acecad->irq) { 170 err = -ENOMEM; 171 goto fail2; 172 } 173 174 acecad->intf = intf; 175 acecad->input = input_dev; 176 177 if (dev->manufacturer) 178 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name)); 179 180 if (dev->product) { 181 if (dev->manufacturer) 182 strlcat(acecad->name, " ", sizeof(acecad->name)); 183 strlcat(acecad->name, dev->product, sizeof(acecad->name)); 184 } 185 186 usb_make_path(dev, acecad->phys, sizeof(acecad->phys)); 187 strlcat(acecad->phys, "/input0", sizeof(acecad->phys)); 188 189 input_dev->name = acecad->name; 190 input_dev->phys = acecad->phys; 191 usb_to_input_id(dev, &input_dev->id); 192 input_dev->dev.parent = &intf->dev; 193 194 input_set_drvdata(input_dev, acecad); 195 196 input_dev->open = usb_acecad_open; 197 input_dev->close = usb_acecad_close; 198 199 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 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_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0); 207 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0); 208 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0); 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; 215 216 case 1: 217 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0); 218 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0); 219 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0); 220 if (!strlen(acecad->name)) 221 snprintf(acecad->name, sizeof(acecad->name), 222 "USB Acecad 302 Tablet %04x:%04x", 223 le16_to_cpu(dev->descriptor.idVendor), 224 le16_to_cpu(dev->descriptor.idProduct)); 225 break; 226 } 227 228 usb_fill_int_urb(acecad->irq, dev, pipe, 229 acecad->data, maxp > 8 ? 8 : maxp, 230 usb_acecad_irq, acecad, endpoint->bInterval); 231 acecad->irq->transfer_dma = acecad->data_dma; 232 acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 233 234 err = input_register_device(acecad->input); 235 if (err) 236 goto fail3; 237 238 usb_set_intfdata(intf, acecad); 239 240 return 0; 241 242 fail3: usb_free_urb(acecad->irq); 243 fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma); 244 fail1: input_free_device(input_dev); 245 kfree(acecad); 246 return err; 247 } 248 249 static void usb_acecad_disconnect(struct usb_interface *intf) 250 { 251 struct usb_acecad *acecad = usb_get_intfdata(intf); 252 struct usb_device *udev = interface_to_usbdev(intf); 253 254 usb_set_intfdata(intf, NULL); 255 256 input_unregister_device(acecad->input); 257 usb_free_urb(acecad->irq); 258 usb_free_coherent(udev, 8, acecad->data, acecad->data_dma); 259 kfree(acecad); 260 } 261 262 static const struct usb_device_id usb_acecad_id_table[] = { 263 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 }, 264 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 }, 265 { } 266 }; 267 268 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table); 269 270 static struct usb_driver usb_acecad_driver = { 271 .name = "usb_acecad", 272 .probe = usb_acecad_probe, 273 .disconnect = usb_acecad_disconnect, 274 .id_table = usb_acecad_id_table, 275 }; 276 277 module_usb_driver(usb_acecad_driver); 278