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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
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
42MODULE_AUTHOR(DRIVER_AUTHOR);
43MODULE_DESCRIPTION(DRIVER_DESC);
44MODULE_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
50struct 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
61static 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
71 break;
72 case -ECONNRESET:
73 case -ENOENT:
74 case -ESHUTDOWN:
75
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
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
103 input_sync(dev);
104
105resubmit:
106 status = usb_submit_urb(urb, GFP_ATOMIC);
107 if (status)
108 err("can't resubmit intr, %s-%s/input0, status %d",
109 acecad->usbdev->bus->bus_name, acecad->usbdev->devpath, status);
110}
111
112static int usb_acecad_open(struct input_dev *dev)
113{
114 struct usb_acecad *acecad = input_get_drvdata(dev);
115
116 acecad->irq->dev = acecad->usbdev;
117 if (usb_submit_urb(acecad->irq, GFP_KERNEL))
118 return -EIO;
119
120 return 0;
121}
122
123static void usb_acecad_close(struct input_dev *dev)
124{
125 struct usb_acecad *acecad = input_get_drvdata(dev);
126
127 usb_kill_urb(acecad->irq);
128}
129
130static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
131{
132 struct usb_device *dev = interface_to_usbdev(intf);
133 struct usb_host_interface *interface = intf->cur_altsetting;
134 struct usb_endpoint_descriptor *endpoint;
135 struct usb_acecad *acecad;
136 struct input_dev *input_dev;
137 int pipe, maxp;
138 int err;
139
140 if (interface->desc.bNumEndpoints != 1)
141 return -ENODEV;
142
143 endpoint = &interface->endpoint[0].desc;
144
145 if (!usb_endpoint_is_int_in(endpoint))
146 return -ENODEV;
147
148 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
149 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
150
151 acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
152 input_dev = input_allocate_device();
153 if (!acecad || !input_dev) {
154 err = -ENOMEM;
155 goto fail1;
156 }
157
158 acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
159 if (!acecad->data) {
160 err= -ENOMEM;
161 goto fail1;
162 }
163
164 acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
165 if (!acecad->irq) {
166 err = -ENOMEM;
167 goto fail2;
168 }
169
170 acecad->usbdev = dev;
171 acecad->input = input_dev;
172
173 if (dev->manufacturer)
174 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
175
176 if (dev->product) {
177 if (dev->manufacturer)
178 strlcat(acecad->name, " ", sizeof(acecad->name));
179 strlcat(acecad->name, dev->product, sizeof(acecad->name));
180 }
181
182 usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
183 strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
184
185 input_dev->name = acecad->name;
186 input_dev->phys = acecad->phys;
187 usb_to_input_id(dev, &input_dev->id);
188 input_dev->dev.parent = &intf->dev;
189
190 input_set_drvdata(input_dev, acecad);
191
192 input_dev->open = usb_acecad_open;
193 input_dev->close = usb_acecad_close;
194
195 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
196 input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
197 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
198 BIT_MASK(BTN_STYLUS2);
199
200 switch (id->driver_info) {
201 case 0:
202 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
203 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
204 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
205 if (!strlen(acecad->name))
206 snprintf(acecad->name, sizeof(acecad->name),
207 "USB Acecad Flair Tablet %04x:%04x",
208 le16_to_cpu(dev->descriptor.idVendor),
209 le16_to_cpu(dev->descriptor.idProduct));
210 break;
211
212 case 1:
213 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
214 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
215 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
216 if (!strlen(acecad->name))
217 snprintf(acecad->name, sizeof(acecad->name),
218 "USB Acecad 302 Tablet %04x:%04x",
219 le16_to_cpu(dev->descriptor.idVendor),
220 le16_to_cpu(dev->descriptor.idProduct));
221 break;
222 }
223
224 usb_fill_int_urb(acecad->irq, dev, pipe,
225 acecad->data, maxp > 8 ? 8 : maxp,
226 usb_acecad_irq, acecad, endpoint->bInterval);
227 acecad->irq->transfer_dma = acecad->data_dma;
228 acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
229
230 err = input_register_device(acecad->input);
231 if (err)
232 goto fail3;
233
234 usb_set_intfdata(intf, acecad);
235
236 return 0;
237
238 fail3: usb_free_urb(acecad->irq);
239 fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
240 fail1: input_free_device(input_dev);
241 kfree(acecad);
242 return err;
243}
244
245static void usb_acecad_disconnect(struct usb_interface *intf)
246{
247 struct usb_acecad *acecad = usb_get_intfdata(intf);
248
249 usb_set_intfdata(intf, NULL);
250
251 input_unregister_device(acecad->input);
252 usb_free_urb(acecad->irq);
253 usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma);
254 kfree(acecad);
255}
256
257static struct usb_device_id usb_acecad_id_table [] = {
258 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
259 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 },
260 { }
261};
262
263MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
264
265static struct usb_driver usb_acecad_driver = {
266 .name = "usb_acecad",
267 .probe = usb_acecad_probe,
268 .disconnect = usb_acecad_disconnect,
269 .id_table = usb_acecad_id_table,
270};
271
272static int __init usb_acecad_init(void)
273{
274 int result = usb_register(&usb_acecad_driver);
275 if (result == 0)
276 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
277 DRIVER_DESC "\n");
278 return result;
279}
280
281static void __exit usb_acecad_exit(void)
282{
283 usb_deregister(&usb_acecad_driver);
284}
285
286module_init(usb_acecad_init);
287module_exit(usb_acecad_exit);
288
