/drivers/input/tablet/acecad.c

http://github.com/mirrors/linux · C · 257 lines · 194 code · 47 blank · 16 comment · 18 complexity · f5c0d493f5c772e8fe7e8369bffcbff5 MD5 · raw file

  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * Copyright (c) 2001-2005 Edouard TISSERANT <edouard.tisserant@wanadoo.fr>
  4. * Copyright (c) 2004-2005 Stephane VOLTZ <svoltz@numericable.fr>
  5. *
  6. * USB Acecad "Acecad Flair" tablet support
  7. *
  8. * Changelog:
  9. * v3.2 - Added sysfs support
  10. */
  11. /*
  12. */
  13. #include <linux/kernel.h>
  14. #include <linux/slab.h>
  15. #include <linux/module.h>
  16. #include <linux/usb/input.h>
  17. MODULE_AUTHOR("Edouard TISSERANT <edouard.tisserant@wanadoo.fr>");
  18. MODULE_DESCRIPTION("USB Acecad Flair tablet driver");
  19. MODULE_LICENSE("GPL");
  20. #define USB_VENDOR_ID_ACECAD 0x0460
  21. #define USB_DEVICE_ID_FLAIR 0x0004
  22. #define USB_DEVICE_ID_302 0x0008
  23. struct usb_acecad {
  24. char name[128];
  25. char phys[64];
  26. struct usb_interface *intf;
  27. struct input_dev *input;
  28. struct urb *irq;
  29. unsigned char *data;
  30. dma_addr_t data_dma;
  31. };
  32. static void usb_acecad_irq(struct urb *urb)
  33. {
  34. struct usb_acecad *acecad = urb->context;
  35. unsigned char *data = acecad->data;
  36. struct input_dev *dev = acecad->input;
  37. struct usb_interface *intf = acecad->intf;
  38. struct usb_device *udev = interface_to_usbdev(intf);
  39. int prox, status;
  40. switch (urb->status) {
  41. case 0:
  42. /* success */
  43. break;
  44. case -ECONNRESET:
  45. case -ENOENT:
  46. case -ESHUTDOWN:
  47. /* this urb is terminated, clean up */
  48. dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n",
  49. __func__, urb->status);
  50. return;
  51. default:
  52. dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n",
  53. __func__, urb->status);
  54. goto resubmit;
  55. }
  56. prox = (data[0] & 0x04) >> 2;
  57. input_report_key(dev, BTN_TOOL_PEN, prox);
  58. if (prox) {
  59. int x = data[1] | (data[2] << 8);
  60. int y = data[3] | (data[4] << 8);
  61. /* Pressure should compute the same way for flair and 302 */
  62. int pressure = data[5] | (data[6] << 8);
  63. int touch = data[0] & 0x01;
  64. int stylus = (data[0] & 0x10) >> 4;
  65. int stylus2 = (data[0] & 0x20) >> 5;
  66. input_report_abs(dev, ABS_X, x);
  67. input_report_abs(dev, ABS_Y, y);
  68. input_report_abs(dev, ABS_PRESSURE, pressure);
  69. input_report_key(dev, BTN_TOUCH, touch);
  70. input_report_key(dev, BTN_STYLUS, stylus);
  71. input_report_key(dev, BTN_STYLUS2, stylus2);
  72. }
  73. /* event termination */
  74. input_sync(dev);
  75. resubmit:
  76. status = usb_submit_urb(urb, GFP_ATOMIC);
  77. if (status)
  78. dev_err(&intf->dev,
  79. "can't resubmit intr, %s-%s/input0, status %d\n",
  80. udev->bus->bus_name,
  81. udev->devpath, status);
  82. }
  83. static int usb_acecad_open(struct input_dev *dev)
  84. {
  85. struct usb_acecad *acecad = input_get_drvdata(dev);
  86. acecad->irq->dev = interface_to_usbdev(acecad->intf);
  87. if (usb_submit_urb(acecad->irq, GFP_KERNEL))
  88. return -EIO;
  89. return 0;
  90. }
  91. static void usb_acecad_close(struct input_dev *dev)
  92. {
  93. struct usb_acecad *acecad = input_get_drvdata(dev);
  94. usb_kill_urb(acecad->irq);
  95. }
  96. static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
  97. {
  98. struct usb_device *dev = interface_to_usbdev(intf);
  99. struct usb_host_interface *interface = intf->cur_altsetting;
  100. struct usb_endpoint_descriptor *endpoint;
  101. struct usb_acecad *acecad;
  102. struct input_dev *input_dev;
  103. int pipe, maxp;
  104. int err;
  105. if (interface->desc.bNumEndpoints != 1)
  106. return -ENODEV;
  107. endpoint = &interface->endpoint[0].desc;
  108. if (!usb_endpoint_is_int_in(endpoint))
  109. return -ENODEV;
  110. pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
  111. maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
  112. acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
  113. input_dev = input_allocate_device();
  114. if (!acecad || !input_dev) {
  115. err = -ENOMEM;
  116. goto fail1;
  117. }
  118. acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
  119. if (!acecad->data) {
  120. err= -ENOMEM;
  121. goto fail1;
  122. }
  123. acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
  124. if (!acecad->irq) {
  125. err = -ENOMEM;
  126. goto fail2;
  127. }
  128. acecad->intf = intf;
  129. acecad->input = input_dev;
  130. if (dev->manufacturer)
  131. strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
  132. if (dev->product) {
  133. if (dev->manufacturer)
  134. strlcat(acecad->name, " ", sizeof(acecad->name));
  135. strlcat(acecad->name, dev->product, sizeof(acecad->name));
  136. }
  137. usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
  138. strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
  139. input_dev->name = acecad->name;
  140. input_dev->phys = acecad->phys;
  141. usb_to_input_id(dev, &input_dev->id);
  142. input_dev->dev.parent = &intf->dev;
  143. input_set_drvdata(input_dev, acecad);
  144. input_dev->open = usb_acecad_open;
  145. input_dev->close = usb_acecad_close;
  146. input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
  147. input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
  148. BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
  149. BIT_MASK(BTN_STYLUS2);
  150. switch (id->driver_info) {
  151. case 0:
  152. input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
  153. input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
  154. input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
  155. if (!strlen(acecad->name))
  156. snprintf(acecad->name, sizeof(acecad->name),
  157. "USB Acecad Flair Tablet %04x:%04x",
  158. le16_to_cpu(dev->descriptor.idVendor),
  159. le16_to_cpu(dev->descriptor.idProduct));
  160. break;
  161. case 1:
  162. input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
  163. input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
  164. input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
  165. if (!strlen(acecad->name))
  166. snprintf(acecad->name, sizeof(acecad->name),
  167. "USB Acecad 302 Tablet %04x:%04x",
  168. le16_to_cpu(dev->descriptor.idVendor),
  169. le16_to_cpu(dev->descriptor.idProduct));
  170. break;
  171. }
  172. usb_fill_int_urb(acecad->irq, dev, pipe,
  173. acecad->data, maxp > 8 ? 8 : maxp,
  174. usb_acecad_irq, acecad, endpoint->bInterval);
  175. acecad->irq->transfer_dma = acecad->data_dma;
  176. acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
  177. err = input_register_device(acecad->input);
  178. if (err)
  179. goto fail3;
  180. usb_set_intfdata(intf, acecad);
  181. return 0;
  182. fail3: usb_free_urb(acecad->irq);
  183. fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
  184. fail1: input_free_device(input_dev);
  185. kfree(acecad);
  186. return err;
  187. }
  188. static void usb_acecad_disconnect(struct usb_interface *intf)
  189. {
  190. struct usb_acecad *acecad = usb_get_intfdata(intf);
  191. struct usb_device *udev = interface_to_usbdev(intf);
  192. usb_set_intfdata(intf, NULL);
  193. input_unregister_device(acecad->input);
  194. usb_free_urb(acecad->irq);
  195. usb_free_coherent(udev, 8, acecad->data, acecad->data_dma);
  196. kfree(acecad);
  197. }
  198. static const struct usb_device_id usb_acecad_id_table[] = {
  199. { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
  200. { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 },
  201. { }
  202. };
  203. MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
  204. static struct usb_driver usb_acecad_driver = {
  205. .name = "usb_acecad",
  206. .probe = usb_acecad_probe,
  207. .disconnect = usb_acecad_disconnect,
  208. .id_table = usb_acecad_id_table,
  209. };
  210. module_usb_driver(usb_acecad_driver);