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_LICENSE "GPL" 39 #define DRIVER_AUTHOR "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>" 40 41 MODULE_AUTHOR(DRIVER_AUTHOR); 42 MODULE_DESCRIPTION(DRIVER_DESC); 43 MODULE_LICENSE(DRIVER_LICENSE); 44 45 #define USB_VENDOR_ID_ACECAD 0x0460 46 #define USB_DEVICE_ID_FLAIR 0x0004 47 #define USB_DEVICE_ID_302 0x0008 48 49 struct usb_acecad { 50 char name[128]; 51 char phys[64]; 52 struct usb_interface *intf; 53 struct input_dev *input; 54 struct urb *irq; 55 56 unsigned char *data; 57 dma_addr_t data_dma; 58 }; 59 60 static void usb_acecad_irq(struct urb *urb) 61 { 62 struct usb_acecad *acecad = urb->context; 63 unsigned char *data = acecad->data; 64 struct input_dev *dev = acecad->input; 65 struct usb_interface *intf = acecad->intf; 66 struct usb_device *udev = interface_to_usbdev(intf); 67 int prox, status; 68 69 switch (urb->status) { 70 case 0: 71 /* success */ 72 break; 73 case -ECONNRESET: 74 case -ENOENT: 75 case -ESHUTDOWN: 76 /* this urb is terminated, clean up */ 77 dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n", 78 __func__, urb->status); 79 return; 80 default: 81 dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n", 82 __func__, urb->status); 83 goto resubmit; 84 } 85 86 prox = (data[0] & 0x04) >> 2; 87 input_report_key(dev, BTN_TOOL_PEN, prox); 88 89 if (prox) { 90 int x = data[1] | (data[2] << 8); 91 int y = data[3] | (data[4] << 8); 92 /* Pressure should compute the same way for flair and 302 */ 93 int pressure = data[5] | (data[6] << 8); 94 int touch = data[0] & 0x01; 95 int stylus = (data[0] & 0x10) >> 4; 96 int stylus2 = (data[0] & 0x20) >> 5; 97 input_report_abs(dev, ABS_X, x); 98 input_report_abs(dev, ABS_Y, y); 99 input_report_abs(dev, ABS_PRESSURE, pressure); 100 input_report_key(dev, BTN_TOUCH, touch); 101 input_report_key(dev, BTN_STYLUS, stylus); 102 input_report_key(dev, BTN_STYLUS2, stylus2); 103 } 104 105 /* event termination */ 106 input_sync(dev); 107 108 resubmit: 109 status = usb_submit_urb(urb, GFP_ATOMIC); 110 if (status) 111 dev_err(&intf->dev, 112 "can't resubmit intr, %s-%s/input0, status %d\n", 113 udev->bus->bus_name, 114 udev->devpath, status); 115 } 116 117 static int usb_acecad_open(struct input_dev *dev) 118 { 119 struct usb_acecad *acecad = input_get_drvdata(dev); 120 121 acecad->irq->dev = interface_to_usbdev(acecad->intf); 122 if (usb_submit_urb(acecad->irq, GFP_KERNEL)) 123 return -EIO; 124 125 return 0; 126 } 127 128 static void usb_acecad_close(struct input_dev *dev) 129 { 130 struct usb_acecad *acecad = input_get_drvdata(dev); 131 132 usb_kill_urb(acecad->irq); 133 } 134 135 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id) 136 { 137 struct usb_device *dev = interface_to_usbdev(intf); 138 struct usb_host_interface *interface = intf->cur_altsetting; 139 struct usb_endpoint_descriptor *endpoint; 140 struct usb_acecad *acecad; 141 struct input_dev *input_dev; 142 int pipe, maxp; 143 int err; 144 145 if (interface->desc.bNumEndpoints != 1) 146 return -ENODEV; 147 148 endpoint = &interface->endpoint[0].desc; 149 150 if (!usb_endpoint_is_int_in(endpoint)) 151 return -ENODEV; 152 153 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); 154 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 155 156 acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL); 157 input_dev = input_allocate_device(); 158 if (!acecad || !input_dev) { 159 err = -ENOMEM; 160 goto fail1; 161 } 162 163 acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma); 164 if (!acecad->data) { 165 err= -ENOMEM; 166 goto fail1; 167 } 168 169 acecad->irq = usb_alloc_urb(0, GFP_KERNEL); 170 if (!acecad->irq) { 171 err = -ENOMEM; 172 goto fail2; 173 } 174 175 acecad->intf = intf; 176 acecad->input = input_dev; 177 178 if (dev->manufacturer) 179 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name)); 180 181 if (dev->product) { 182 if (dev->manufacturer) 183 strlcat(acecad->name, " ", sizeof(acecad->name)); 184 strlcat(acecad->name, dev->product, sizeof(acecad->name)); 185 } 186 187 usb_make_path(dev, acecad->phys, sizeof(acecad->phys)); 188 strlcat(acecad->phys, "/input0", sizeof(acecad->phys)); 189 190 input_dev->name = acecad->name; 191 input_dev->phys = acecad->phys; 192 usb_to_input_id(dev, &input_dev->id); 193 input_dev->dev.parent = &intf->dev; 194 195 input_set_drvdata(input_dev, acecad); 196 197 input_dev->open = usb_acecad_open; 198 input_dev->close = usb_acecad_close; 199 200 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 201 input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) | 202 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) | 203 BIT_MASK(BTN_STYLUS2); 204 205 switch (id->driver_info) { 206 case 0: 207 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0); 208 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0); 209 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0); 210 if (!strlen(acecad->name)) 211 snprintf(acecad->name, sizeof(acecad->name), 212 "USB Acecad Flair Tablet %04x:%04x", 213 le16_to_cpu(dev->descriptor.idVendor), 214 le16_to_cpu(dev->descriptor.idProduct)); 215 break; 216 217 case 1: 218 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0); 219 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0); 220 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0); 221 if (!strlen(acecad->name)) 222 snprintf(acecad->name, sizeof(acecad->name), 223 "USB Acecad 302 Tablet %04x:%04x", 224 le16_to_cpu(dev->descriptor.idVendor), 225 le16_to_cpu(dev->descriptor.idProduct)); 226 break; 227 } 228 229 usb_fill_int_urb(acecad->irq, dev, pipe, 230 acecad->data, maxp > 8 ? 8 : maxp, 231 usb_acecad_irq, acecad, endpoint->bInterval); 232 acecad->irq->transfer_dma = acecad->data_dma; 233 acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 234 235 err = input_register_device(acecad->input); 236 if (err) 237 goto fail3; 238 239 usb_set_intfdata(intf, acecad); 240 241 return 0; 242 243 fail3: usb_free_urb(acecad->irq); 244 fail2: usb_free_coherent(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 struct usb_device *udev = interface_to_usbdev(intf); 254 255 usb_set_intfdata(intf, NULL); 256 257 input_unregister_device(acecad->input); 258 usb_free_urb(acecad->irq); 259 usb_free_coherent(udev, 8, acecad->data, acecad->data_dma); 260 kfree(acecad); 261 } 262 263 static struct usb_device_id usb_acecad_id_table [] = { 264 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 }, 265 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 }, 266 { } 267 }; 268 269 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table); 270 271 static struct usb_driver usb_acecad_driver = { 272 .name = "usb_acecad", 273 .probe = usb_acecad_probe, 274 .disconnect = usb_acecad_disconnect, 275 .id_table = usb_acecad_id_table, 276 }; 277 278 module_usb_driver(usb_acecad_driver); 279