1 /* 2 * Copyright (c) 2001-2005 Edouard TISSERANT <[email protected]> 3 * Copyright (c) 2004-2005 Stephane VOLTZ <[email protected]> 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 <[email protected]>" 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", __func__, urb->status); 77 return; 78 default: 79 dbg("%s - nonzero urb status received: %d", __func__, 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 dev_err(&acecad->usbdev->dev, 109 "can't resubmit intr, %s-%s/input0, status %d\n", 110 acecad->usbdev->bus->bus_name, 111 acecad->usbdev->devpath, status); 112 } 113 114 static int usb_acecad_open(struct input_dev *dev) 115 { 116 struct usb_acecad *acecad = input_get_drvdata(dev); 117 118 acecad->irq->dev = acecad->usbdev; 119 if (usb_submit_urb(acecad->irq, GFP_KERNEL)) 120 return -EIO; 121 122 return 0; 123 } 124 125 static void usb_acecad_close(struct input_dev *dev) 126 { 127 struct usb_acecad *acecad = input_get_drvdata(dev); 128 129 usb_kill_urb(acecad->irq); 130 } 131 132 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id) 133 { 134 struct usb_device *dev = interface_to_usbdev(intf); 135 struct usb_host_interface *interface = intf->cur_altsetting; 136 struct usb_endpoint_descriptor *endpoint; 137 struct usb_acecad *acecad; 138 struct input_dev *input_dev; 139 int pipe, maxp; 140 int err; 141 142 if (interface->desc.bNumEndpoints != 1) 143 return -ENODEV; 144 145 endpoint = &interface->endpoint[0].desc; 146 147 if (!usb_endpoint_is_int_in(endpoint)) 148 return -ENODEV; 149 150 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); 151 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 152 153 acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL); 154 input_dev = input_allocate_device(); 155 if (!acecad || !input_dev) { 156 err = -ENOMEM; 157 goto fail1; 158 } 159 160 acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma); 161 if (!acecad->data) { 162 err= -ENOMEM; 163 goto fail1; 164 } 165 166 acecad->irq = usb_alloc_urb(0, GFP_KERNEL); 167 if (!acecad->irq) { 168 err = -ENOMEM; 169 goto fail2; 170 } 171 172 acecad->usbdev = dev; 173 acecad->input = input_dev; 174 175 if (dev->manufacturer) 176 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name)); 177 178 if (dev->product) { 179 if (dev->manufacturer) 180 strlcat(acecad->name, " ", sizeof(acecad->name)); 181 strlcat(acecad->name, dev->product, sizeof(acecad->name)); 182 } 183 184 usb_make_path(dev, acecad->phys, sizeof(acecad->phys)); 185 strlcat(acecad->phys, "/input0", sizeof(acecad->phys)); 186 187 input_dev->name = acecad->name; 188 input_dev->phys = acecad->phys; 189 usb_to_input_id(dev, &input_dev->id); 190 input_dev->dev.parent = &intf->dev; 191 192 input_set_drvdata(input_dev, acecad); 193 194 input_dev->open = usb_acecad_open; 195 input_dev->close = usb_acecad_close; 196 197 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 198 input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) | 199 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) | 200 BIT_MASK(BTN_STYLUS2); 201 202 switch (id->driver_info) { 203 case 0: 204 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0); 205 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0); 206 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0); 207 if (!strlen(acecad->name)) 208 snprintf(acecad->name, sizeof(acecad->name), 209 "USB Acecad Flair Tablet %04x:%04x", 210 le16_to_cpu(dev->descriptor.idVendor), 211 le16_to_cpu(dev->descriptor.idProduct)); 212 break; 213 214 case 1: 215 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0); 216 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0); 217 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0); 218 if (!strlen(acecad->name)) 219 snprintf(acecad->name, sizeof(acecad->name), 220 "USB Acecad 302 Tablet %04x:%04x", 221 le16_to_cpu(dev->descriptor.idVendor), 222 le16_to_cpu(dev->descriptor.idProduct)); 223 break; 224 } 225 226 usb_fill_int_urb(acecad->irq, dev, pipe, 227 acecad->data, maxp > 8 ? 8 : maxp, 228 usb_acecad_irq, acecad, endpoint->bInterval); 229 acecad->irq->transfer_dma = acecad->data_dma; 230 acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 231 232 err = input_register_device(acecad->input); 233 if (err) 234 goto fail3; 235 236 usb_set_intfdata(intf, acecad); 237 238 return 0; 239 240 fail3: usb_free_urb(acecad->irq); 241 fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma); 242 fail1: input_free_device(input_dev); 243 kfree(acecad); 244 return err; 245 } 246 247 static void usb_acecad_disconnect(struct usb_interface *intf) 248 { 249 struct usb_acecad *acecad = usb_get_intfdata(intf); 250 251 usb_set_intfdata(intf, NULL); 252 253 input_unregister_device(acecad->input); 254 usb_free_urb(acecad->irq); 255 usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma); 256 kfree(acecad); 257 } 258 259 static struct usb_device_id usb_acecad_id_table [] = { 260 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 }, 261 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 }, 262 { } 263 }; 264 265 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table); 266 267 static struct usb_driver usb_acecad_driver = { 268 .name = "usb_acecad", 269 .probe = usb_acecad_probe, 270 .disconnect = usb_acecad_disconnect, 271 .id_table = usb_acecad_id_table, 272 }; 273 274 module_usb_driver(usb_acecad_driver); 275