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28#include <linux/kernel.h>
29#include <linux/slab.h>
30#include <linux/module.h>
31#include <linux/usb/input.h>
32
33
34
35
36#define DRIVER_VERSION "v3.2"
37#define DRIVER_DESC "USB Acecad Flair tablet driver"
38#define DRIVER_LICENSE "GPL"
39#define DRIVER_AUTHOR "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>"
40
41MODULE_AUTHOR(DRIVER_AUTHOR);
42MODULE_DESCRIPTION(DRIVER_DESC);
43MODULE_LICENSE(DRIVER_LICENSE);
44
45#define USB_VENDOR_ID_ACECAD 0x0460
46#define USB_DEVICE_ID_FLAIR 0x0004
47#define USB_DEVICE_ID_302 0x0008
48
49struct usb_acecad {
50 char name[128];
51 char phys[64];
52 struct usb_interface *intf;
53 struct input_dev *input;
54 struct urb *irq;
55
56 unsigned char *data;
57 dma_addr_t data_dma;
58};
59
60static void usb_acecad_irq(struct urb *urb)
61{
62 struct usb_acecad *acecad = urb->context;
63 unsigned char *data = acecad->data;
64 struct input_dev *dev = acecad->input;
65 struct usb_interface *intf = acecad->intf;
66 struct usb_device *udev = interface_to_usbdev(intf);
67 int prox, status;
68
69 switch (urb->status) {
70 case 0:
71
72 break;
73 case -ECONNRESET:
74 case -ENOENT:
75 case -ESHUTDOWN:
76
77 dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n",
78 __func__, urb->status);
79 return;
80 default:
81 dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n",
82 __func__, urb->status);
83 goto resubmit;
84 }
85
86 prox = (data[0] & 0x04) >> 2;
87 input_report_key(dev, BTN_TOOL_PEN, prox);
88
89 if (prox) {
90 int x = data[1] | (data[2] << 8);
91 int y = data[3] | (data[4] << 8);
92
93 int pressure = data[5] | (data[6] << 8);
94 int touch = data[0] & 0x01;
95 int stylus = (data[0] & 0x10) >> 4;
96 int stylus2 = (data[0] & 0x20) >> 5;
97 input_report_abs(dev, ABS_X, x);
98 input_report_abs(dev, ABS_Y, y);
99 input_report_abs(dev, ABS_PRESSURE, pressure);
100 input_report_key(dev, BTN_TOUCH, touch);
101 input_report_key(dev, BTN_STYLUS, stylus);
102 input_report_key(dev, BTN_STYLUS2, stylus2);
103 }
104
105
106 input_sync(dev);
107
108resubmit:
109 status = usb_submit_urb(urb, GFP_ATOMIC);
110 if (status)
111 dev_err(&intf->dev,
112 "can't resubmit intr, %s-%s/input0, status %d\n",
113 udev->bus->bus_name,
114 udev->devpath, status);
115}
116
117static int usb_acecad_open(struct input_dev *dev)
118{
119 struct usb_acecad *acecad = input_get_drvdata(dev);
120
121 acecad->irq->dev = interface_to_usbdev(acecad->intf);
122 if (usb_submit_urb(acecad->irq, GFP_KERNEL))
123 return -EIO;
124
125 return 0;
126}
127
128static void usb_acecad_close(struct input_dev *dev)
129{
130 struct usb_acecad *acecad = input_get_drvdata(dev);
131
132 usb_kill_urb(acecad->irq);
133}
134
135static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
136{
137 struct usb_device *dev = interface_to_usbdev(intf);
138 struct usb_host_interface *interface = intf->cur_altsetting;
139 struct usb_endpoint_descriptor *endpoint;
140 struct usb_acecad *acecad;
141 struct input_dev *input_dev;
142 int pipe, maxp;
143 int err;
144
145 if (interface->desc.bNumEndpoints != 1)
146 return -ENODEV;
147
148 endpoint = &interface->endpoint[0].desc;
149
150 if (!usb_endpoint_is_int_in(endpoint))
151 return -ENODEV;
152
153 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
154 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
155
156 acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
157 input_dev = input_allocate_device();
158 if (!acecad || !input_dev) {
159 err = -ENOMEM;
160 goto fail1;
161 }
162
163 acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
164 if (!acecad->data) {
165 err= -ENOMEM;
166 goto fail1;
167 }
168
169 acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
170 if (!acecad->irq) {
171 err = -ENOMEM;
172 goto fail2;
173 }
174
175 acecad->intf = intf;
176 acecad->input = input_dev;
177
178 if (dev->manufacturer)
179 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
180
181 if (dev->product) {
182 if (dev->manufacturer)
183 strlcat(acecad->name, " ", sizeof(acecad->name));
184 strlcat(acecad->name, dev->product, sizeof(acecad->name));
185 }
186
187 usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
188 strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
189
190 input_dev->name = acecad->name;
191 input_dev->phys = acecad->phys;
192 usb_to_input_id(dev, &input_dev->id);
193 input_dev->dev.parent = &intf->dev;
194
195 input_set_drvdata(input_dev, acecad);
196
197 input_dev->open = usb_acecad_open;
198 input_dev->close = usb_acecad_close;
199
200 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
201 input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
202 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
203 BIT_MASK(BTN_STYLUS2);
204
205 switch (id->driver_info) {
206 case 0:
207 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
208 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
209 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
210 if (!strlen(acecad->name))
211 snprintf(acecad->name, sizeof(acecad->name),
212 "USB Acecad Flair Tablet %04x:%04x",
213 le16_to_cpu(dev->descriptor.idVendor),
214 le16_to_cpu(dev->descriptor.idProduct));
215 break;
216
217 case 1:
218 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
219 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
220 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
221 if (!strlen(acecad->name))
222 snprintf(acecad->name, sizeof(acecad->name),
223 "USB Acecad 302 Tablet %04x:%04x",
224 le16_to_cpu(dev->descriptor.idVendor),
225 le16_to_cpu(dev->descriptor.idProduct));
226 break;
227 }
228
229 usb_fill_int_urb(acecad->irq, dev, pipe,
230 acecad->data, maxp > 8 ? 8 : maxp,
231 usb_acecad_irq, acecad, endpoint->bInterval);
232 acecad->irq->transfer_dma = acecad->data_dma;
233 acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
234
235 err = input_register_device(acecad->input);
236 if (err)
237 goto fail3;
238
239 usb_set_intfdata(intf, acecad);
240
241 return 0;
242
243 fail3: usb_free_urb(acecad->irq);
244 fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
245 fail1: input_free_device(input_dev);
246 kfree(acecad);
247 return err;
248}
249
250static void usb_acecad_disconnect(struct usb_interface *intf)
251{
252 struct usb_acecad *acecad = usb_get_intfdata(intf);
253 struct usb_device *udev = interface_to_usbdev(intf);
254
255 usb_set_intfdata(intf, NULL);
256
257 input_unregister_device(acecad->input);
258 usb_free_urb(acecad->irq);
259 usb_free_coherent(udev, 8, acecad->data, acecad->data_dma);
260 kfree(acecad);
261}
262
263static struct usb_device_id usb_acecad_id_table [] = {
264 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
265 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 },
266 { }
267};
268
269MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
270
271static struct usb_driver usb_acecad_driver = {
272 .name = "usb_acecad",
273 .probe = usb_acecad_probe,
274 .disconnect = usb_acecad_disconnect,
275 .id_table = usb_acecad_id_table,
276};
277
278module_usb_driver(usb_acecad_driver);
279
