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 MODULE_AUTHOR("Edouard TISSERANT <edouard.tisserant@wanadoo.fr>"); 34 MODULE_DESCRIPTION("USB Acecad Flair tablet driver"); 35 MODULE_LICENSE("GPL"); 36 37 #define USB_VENDOR_ID_ACECAD 0x0460 38 #define USB_DEVICE_ID_FLAIR 0x0004 39 #define USB_DEVICE_ID_302 0x0008 40 41 struct usb_acecad { 42 char name[128]; 43 char phys[64]; 44 struct usb_interface *intf; 45 struct input_dev *input; 46 struct urb *irq; 47 48 unsigned char *data; 49 dma_addr_t data_dma; 50 }; 51 52 static void usb_acecad_irq(struct urb *urb) 53 { 54 struct usb_acecad *acecad = urb->context; 55 unsigned char *data = acecad->data; 56 struct input_dev *dev = acecad->input; 57 struct usb_interface *intf = acecad->intf; 58 struct usb_device *udev = interface_to_usbdev(intf); 59 int prox, status; 60 61 switch (urb->status) { 62 case 0: 63 /* success */ 64 break; 65 case -ECONNRESET: 66 case -ENOENT: 67 case -ESHUTDOWN: 68 /* this urb is terminated, clean up */ 69 dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n", 70 __func__, urb->status); 71 return; 72 default: 73 dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n", 74 __func__, urb->status); 75 goto resubmit; 76 } 77 78 prox = (data[0] & 0x04) >> 2; 79 input_report_key(dev, BTN_TOOL_PEN, prox); 80 81 if (prox) { 82 int x = data[1] | (data[2] << 8); 83 int y = data[3] | (data[4] << 8); 84 /* Pressure should compute the same way for flair and 302 */ 85 int pressure = data[5] | (data[6] << 8); 86 int touch = data[0] & 0x01; 87 int stylus = (data[0] & 0x10) >> 4; 88 int stylus2 = (data[0] & 0x20) >> 5; 89 input_report_abs(dev, ABS_X, x); 90 input_report_abs(dev, ABS_Y, y); 91 input_report_abs(dev, ABS_PRESSURE, pressure); 92 input_report_key(dev, BTN_TOUCH, touch); 93 input_report_key(dev, BTN_STYLUS, stylus); 94 input_report_key(dev, BTN_STYLUS2, stylus2); 95 } 96 97 /* event termination */ 98 input_sync(dev); 99 100 resubmit: 101 status = usb_submit_urb(urb, GFP_ATOMIC); 102 if (status) 103 dev_err(&intf->dev, 104 "can't resubmit intr, %s-%s/input0, status %d\n", 105 udev->bus->bus_name, 106 udev->devpath, status); 107 } 108 109 static int usb_acecad_open(struct input_dev *dev) 110 { 111 struct usb_acecad *acecad = input_get_drvdata(dev); 112 113 acecad->irq->dev = interface_to_usbdev(acecad->intf); 114 if (usb_submit_urb(acecad->irq, GFP_KERNEL)) 115 return -EIO; 116 117 return 0; 118 } 119 120 static void usb_acecad_close(struct input_dev *dev) 121 { 122 struct usb_acecad *acecad = input_get_drvdata(dev); 123 124 usb_kill_urb(acecad->irq); 125 } 126 127 static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id) 128 { 129 struct usb_device *dev = interface_to_usbdev(intf); 130 struct usb_host_interface *interface = intf->cur_altsetting; 131 struct usb_endpoint_descriptor *endpoint; 132 struct usb_acecad *acecad; 133 struct input_dev *input_dev; 134 int pipe, maxp; 135 int err; 136 137 if (interface->desc.bNumEndpoints != 1) 138 return -ENODEV; 139 140 endpoint = &interface->endpoint[0].desc; 141 142 if (!usb_endpoint_is_int_in(endpoint)) 143 return -ENODEV; 144 145 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress); 146 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 147 148 acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL); 149 input_dev = input_allocate_device(); 150 if (!acecad || !input_dev) { 151 err = -ENOMEM; 152 goto fail1; 153 } 154 155 acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma); 156 if (!acecad->data) { 157 err= -ENOMEM; 158 goto fail1; 159 } 160 161 acecad->irq = usb_alloc_urb(0, GFP_KERNEL); 162 if (!acecad->irq) { 163 err = -ENOMEM; 164 goto fail2; 165 } 166 167 acecad->intf = intf; 168 acecad->input = input_dev; 169 170 if (dev->manufacturer) 171 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name)); 172 173 if (dev->product) { 174 if (dev->manufacturer) 175 strlcat(acecad->name, " ", sizeof(acecad->name)); 176 strlcat(acecad->name, dev->product, sizeof(acecad->name)); 177 } 178 179 usb_make_path(dev, acecad->phys, sizeof(acecad->phys)); 180 strlcat(acecad->phys, "/input0", sizeof(acecad->phys)); 181 182 input_dev->name = acecad->name; 183 input_dev->phys = acecad->phys; 184 usb_to_input_id(dev, &input_dev->id); 185 input_dev->dev.parent = &intf->dev; 186 187 input_set_drvdata(input_dev, acecad); 188 189 input_dev->open = usb_acecad_open; 190 input_dev->close = usb_acecad_close; 191 192 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 193 input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) | 194 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) | 195 BIT_MASK(BTN_STYLUS2); 196 197 switch (id->driver_info) { 198 case 0: 199 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0); 200 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0); 201 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0); 202 if (!strlen(acecad->name)) 203 snprintf(acecad->name, sizeof(acecad->name), 204 "USB Acecad Flair Tablet %04x:%04x", 205 le16_to_cpu(dev->descriptor.idVendor), 206 le16_to_cpu(dev->descriptor.idProduct)); 207 break; 208 209 case 1: 210 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0); 211 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0); 212 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0); 213 if (!strlen(acecad->name)) 214 snprintf(acecad->name, sizeof(acecad->name), 215 "USB Acecad 302 Tablet %04x:%04x", 216 le16_to_cpu(dev->descriptor.idVendor), 217 le16_to_cpu(dev->descriptor.idProduct)); 218 break; 219 } 220 221 usb_fill_int_urb(acecad->irq, dev, pipe, 222 acecad->data, maxp > 8 ? 8 : maxp, 223 usb_acecad_irq, acecad, endpoint->bInterval); 224 acecad->irq->transfer_dma = acecad->data_dma; 225 acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 226 227 err = input_register_device(acecad->input); 228 if (err) 229 goto fail3; 230 231 usb_set_intfdata(intf, acecad); 232 233 return 0; 234 235 fail3: usb_free_urb(acecad->irq); 236 fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma); 237 fail1: input_free_device(input_dev); 238 kfree(acecad); 239 return err; 240 } 241 242 static void usb_acecad_disconnect(struct usb_interface *intf) 243 { 244 struct usb_acecad *acecad = usb_get_intfdata(intf); 245 struct usb_device *udev = interface_to_usbdev(intf); 246 247 usb_set_intfdata(intf, NULL); 248 249 input_unregister_device(acecad->input); 250 usb_free_urb(acecad->irq); 251 usb_free_coherent(udev, 8, acecad->data, acecad->data_dma); 252 kfree(acecad); 253 } 254 255 static const struct usb_device_id usb_acecad_id_table[] = { 256 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 }, 257 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 }, 258 { } 259 }; 260 261 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table); 262 263 static struct usb_driver usb_acecad_driver = { 264 .name = "usb_acecad", 265 .probe = usb_acecad_probe, 266 .disconnect = usb_acecad_disconnect, 267 .id_table = usb_acecad_id_table, 268 }; 269 270 module_usb_driver(usb_acecad_driver); 271