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 usb_interface *intf; 55 struct input_dev *input; 56 struct urb *irq; 57 58 unsigned char *data; 59 dma_addr_t data_dma; 60 }; 61 62 static void usb_acecad_irq(struct urb *urb) 63 { 64 struct usb_acecad *acecad = urb->context; 65 unsigned char *data = acecad->data; 66 struct input_dev *dev = acecad->input; 67 struct usb_interface *intf = acecad->intf; 68 int prox, status; 69 70 switch (urb->status) { 71 case 0: 72 /* success */ 73 break; 74 case -ECONNRESET: 75 case -ENOENT: 76 case -ESHUTDOWN: 77 /* this urb is terminated, clean up */ 78 dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n", 79 __func__, urb->status); 80 return; 81 default: 82 dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n", 83 __func__, urb->status); 84 goto resubmit; 85 } 86 87 prox = (data[0] & 0x04) >> 2; 88 input_report_key(dev, BTN_TOOL_PEN, prox); 89 90 if (prox) { 91 int x = data[1] | (data[2] << 8); 92 int y = data[3] | (data[4] << 8); 93 /* Pressure should compute the same way for flair and 302 */ 94 int pressure = data[5] | (data[6] << 8); 95 int touch = data[0] & 0x01; 96 int stylus = (data[0] & 0x10) >> 4; 97 int stylus2 = (data[0] & 0x20) >> 5; 98 input_report_abs(dev, ABS_X, x); 99 input_report_abs(dev, ABS_Y, y); 100 input_report_abs(dev, ABS_PRESSURE, pressure); 101 input_report_key(dev, BTN_TOUCH, touch); 102 input_report_key(dev, BTN_STYLUS, stylus); 103 input_report_key(dev, BTN_STYLUS2, stylus2); 104 } 105 106 /* event termination */ 107 input_sync(dev); 108 109 resubmit: 110 status = usb_submit_urb(urb, GFP_ATOMIC); 111 if (status) 112 dev_err(&intf->dev, 113 "can't resubmit intr, %s-%s/input0, status %d\n", 114 acecad->usbdev->bus->bus_name, 115 acecad->usbdev->devpath, status); 116 } 117 118 static int usb_acecad_open(struct input_dev *dev) 119 { 120 struct usb_acecad *acecad = input_get_drvdata(dev); 121 122 acecad->irq->dev = acecad->usbdev; 123 if (usb_submit_urb(acecad->irq, GFP_KERNEL)) 124 return -EIO; 125 126 return 0; 127 } 128 129 static void usb_acecad_close(struct input_dev *dev) 130 { 131 struct usb_acecad *acecad = input_get_drvdata(dev); 132 133 usb_kill_urb(acecad->irq); 134 } 135 136 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id) 137 { 138 struct usb_device *dev = interface_to_usbdev(intf); 139 struct usb_host_interface *interface = intf->cur_altsetting; 140 struct usb_endpoint_descriptor *endpoint; 141 struct usb_acecad *acecad; 142 struct input_dev *input_dev; 143 int pipe, maxp; 144 int err; 145 146 if (interface->desc.bNumEndpoints != 1) 147 return -ENODEV; 148 149 endpoint = &interface->endpoint[0].desc; 150 151 if (!usb_endpoint_is_int_in(endpoint)) 152 return -ENODEV; 153 154 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); 155 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 156 157 acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL); 158 input_dev = input_allocate_device(); 159 if (!acecad || !input_dev) { 160 err = -ENOMEM; 161 goto fail1; 162 } 163 164 acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma); 165 if (!acecad->data) { 166 err= -ENOMEM; 167 goto fail1; 168 } 169 170 acecad->irq = usb_alloc_urb(0, GFP_KERNEL); 171 if (!acecad->irq) { 172 err = -ENOMEM; 173 goto fail2; 174 } 175 176 acecad->usbdev = dev; 177 acecad->intf = intf; 178 acecad->input = input_dev; 179 180 if (dev->manufacturer) 181 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name)); 182 183 if (dev->product) { 184 if (dev->manufacturer) 185 strlcat(acecad->name, " ", sizeof(acecad->name)); 186 strlcat(acecad->name, dev->product, sizeof(acecad->name)); 187 } 188 189 usb_make_path(dev, acecad->phys, sizeof(acecad->phys)); 190 strlcat(acecad->phys, "/input0", sizeof(acecad->phys)); 191 192 input_dev->name = acecad->name; 193 input_dev->phys = acecad->phys; 194 usb_to_input_id(dev, &input_dev->id); 195 input_dev->dev.parent = &intf->dev; 196 197 input_set_drvdata(input_dev, acecad); 198 199 input_dev->open = usb_acecad_open; 200 input_dev->close = usb_acecad_close; 201 202 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 203 input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) | 204 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) | 205 BIT_MASK(BTN_STYLUS2); 206 207 switch (id->driver_info) { 208 case 0: 209 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0); 210 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0); 211 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0); 212 if (!strlen(acecad->name)) 213 snprintf(acecad->name, sizeof(acecad->name), 214 "USB Acecad Flair Tablet %04x:%04x", 215 le16_to_cpu(dev->descriptor.idVendor), 216 le16_to_cpu(dev->descriptor.idProduct)); 217 break; 218 219 case 1: 220 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0); 221 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0); 222 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0); 223 if (!strlen(acecad->name)) 224 snprintf(acecad->name, sizeof(acecad->name), 225 "USB Acecad 302 Tablet %04x:%04x", 226 le16_to_cpu(dev->descriptor.idVendor), 227 le16_to_cpu(dev->descriptor.idProduct)); 228 break; 229 } 230 231 usb_fill_int_urb(acecad->irq, dev, pipe, 232 acecad->data, maxp > 8 ? 8 : maxp, 233 usb_acecad_irq, acecad, endpoint->bInterval); 234 acecad->irq->transfer_dma = acecad->data_dma; 235 acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 236 237 err = input_register_device(acecad->input); 238 if (err) 239 goto fail3; 240 241 usb_set_intfdata(intf, acecad); 242 243 return 0; 244 245 fail3: usb_free_urb(acecad->irq); 246 fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma); 247 fail1: input_free_device(input_dev); 248 kfree(acecad); 249 return err; 250 } 251 252 static void usb_acecad_disconnect(struct usb_interface *intf) 253 { 254 struct usb_acecad *acecad = usb_get_intfdata(intf); 255 256 usb_set_intfdata(intf, NULL); 257 258 input_unregister_device(acecad->input); 259 usb_free_urb(acecad->irq); 260 usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma); 261 kfree(acecad); 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 module_usb_driver(usb_acecad_driver); 280