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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 usb_interface *intf;
55 struct input_dev *input;
56 struct urb *irq;
57
58 unsigned char *data;
59 dma_addr_t data_dma;
60};
61
62static void usb_acecad_irq(struct urb *urb)
63{
64 struct usb_acecad *acecad = urb->context;
65 unsigned char *data = acecad->data;
66 struct input_dev *dev = acecad->input;
67 struct usb_interface *intf = acecad->intf;
68 int prox, status;
69
70 switch (urb->status) {
71 case 0:
72
73 break;
74 case -ECONNRESET:
75 case -ENOENT:
76 case -ESHUTDOWN:
77
78 dev_dbg(&intf->dev, "%s - urb shutting down with status: %d\n",
79 __func__, urb->status);
80 return;
81 default:
82 dev_dbg(&intf->dev, "%s - nonzero urb status received: %d\n",
83 __func__, urb->status);
84 goto resubmit;
85 }
86
87 prox = (data[0] & 0x04) >> 2;
88 input_report_key(dev, BTN_TOOL_PEN, prox);
89
90 if (prox) {
91 int x = data[1] | (data[2] << 8);
92 int y = data[3] | (data[4] << 8);
93
94 int pressure = data[5] | (data[6] << 8);
95 int touch = data[0] & 0x01;
96 int stylus = (data[0] & 0x10) >> 4;
97 int stylus2 = (data[0] & 0x20) >> 5;
98 input_report_abs(dev, ABS_X, x);
99 input_report_abs(dev, ABS_Y, y);
100 input_report_abs(dev, ABS_PRESSURE, pressure);
101 input_report_key(dev, BTN_TOUCH, touch);
102 input_report_key(dev, BTN_STYLUS, stylus);
103 input_report_key(dev, BTN_STYLUS2, stylus2);
104 }
105
106
107 input_sync(dev);
108
109resubmit:
110 status = usb_submit_urb(urb, GFP_ATOMIC);
111 if (status)
112 dev_err(&intf->dev,
113 "can't resubmit intr, %s-%s/input0, status %d\n",
114 acecad->usbdev->bus->bus_name,
115 acecad->usbdev->devpath, status);
116}
117
118static int usb_acecad_open(struct input_dev *dev)
119{
120 struct usb_acecad *acecad = input_get_drvdata(dev);
121
122 acecad->irq->dev = acecad->usbdev;
123 if (usb_submit_urb(acecad->irq, GFP_KERNEL))
124 return -EIO;
125
126 return 0;
127}
128
129static void usb_acecad_close(struct input_dev *dev)
130{
131 struct usb_acecad *acecad = input_get_drvdata(dev);
132
133 usb_kill_urb(acecad->irq);
134}
135
136static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
137{
138 struct usb_device *dev = interface_to_usbdev(intf);
139 struct usb_host_interface *interface = intf->cur_altsetting;
140 struct usb_endpoint_descriptor *endpoint;
141 struct usb_acecad *acecad;
142 struct input_dev *input_dev;
143 int pipe, maxp;
144 int err;
145
146 if (interface->desc.bNumEndpoints != 1)
147 return -ENODEV;
148
149 endpoint = &interface->endpoint[0].desc;
150
151 if (!usb_endpoint_is_int_in(endpoint))
152 return -ENODEV;
153
154 pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
155 maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
156
157 acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
158 input_dev = input_allocate_device();
159 if (!acecad || !input_dev) {
160 err = -ENOMEM;
161 goto fail1;
162 }
163
164 acecad->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &acecad->data_dma);
165 if (!acecad->data) {
166 err= -ENOMEM;
167 goto fail1;
168 }
169
170 acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
171 if (!acecad->irq) {
172 err = -ENOMEM;
173 goto fail2;
174 }
175
176 acecad->usbdev = dev;
177 acecad->intf = intf;
178 acecad->input = input_dev;
179
180 if (dev->manufacturer)
181 strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
182
183 if (dev->product) {
184 if (dev->manufacturer)
185 strlcat(acecad->name, " ", sizeof(acecad->name));
186 strlcat(acecad->name, dev->product, sizeof(acecad->name));
187 }
188
189 usb_make_path(dev, acecad->phys, sizeof(acecad->phys));
190 strlcat(acecad->phys, "/input0", sizeof(acecad->phys));
191
192 input_dev->name = acecad->name;
193 input_dev->phys = acecad->phys;
194 usb_to_input_id(dev, &input_dev->id);
195 input_dev->dev.parent = &intf->dev;
196
197 input_set_drvdata(input_dev, acecad);
198
199 input_dev->open = usb_acecad_open;
200 input_dev->close = usb_acecad_close;
201
202 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
203 input_dev->keybit[BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_TOOL_PEN) |
204 BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS) |
205 BIT_MASK(BTN_STYLUS2);
206
207 switch (id->driver_info) {
208 case 0:
209 input_set_abs_params(input_dev, ABS_X, 0, 5000, 4, 0);
210 input_set_abs_params(input_dev, ABS_Y, 0, 3750, 4, 0);
211 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 512, 0, 0);
212 if (!strlen(acecad->name))
213 snprintf(acecad->name, sizeof(acecad->name),
214 "USB Acecad Flair Tablet %04x:%04x",
215 le16_to_cpu(dev->descriptor.idVendor),
216 le16_to_cpu(dev->descriptor.idProduct));
217 break;
218
219 case 1:
220 input_set_abs_params(input_dev, ABS_X, 0, 53000, 4, 0);
221 input_set_abs_params(input_dev, ABS_Y, 0, 2250, 4, 0);
222 input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
223 if (!strlen(acecad->name))
224 snprintf(acecad->name, sizeof(acecad->name),
225 "USB Acecad 302 Tablet %04x:%04x",
226 le16_to_cpu(dev->descriptor.idVendor),
227 le16_to_cpu(dev->descriptor.idProduct));
228 break;
229 }
230
231 usb_fill_int_urb(acecad->irq, dev, pipe,
232 acecad->data, maxp > 8 ? 8 : maxp,
233 usb_acecad_irq, acecad, endpoint->bInterval);
234 acecad->irq->transfer_dma = acecad->data_dma;
235 acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
236
237 err = input_register_device(acecad->input);
238 if (err)
239 goto fail3;
240
241 usb_set_intfdata(intf, acecad);
242
243 return 0;
244
245 fail3: usb_free_urb(acecad->irq);
246 fail2: usb_free_coherent(dev, 8, acecad->data, acecad->data_dma);
247 fail1: input_free_device(input_dev);
248 kfree(acecad);
249 return err;
250}
251
252static void usb_acecad_disconnect(struct usb_interface *intf)
253{
254 struct usb_acecad *acecad = usb_get_intfdata(intf);
255
256 usb_set_intfdata(intf, NULL);
257
258 input_unregister_device(acecad->input);
259 usb_free_urb(acecad->irq);
260 usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma);
261 kfree(acecad);
262}
263
264static struct usb_device_id usb_acecad_id_table [] = {
265 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
266 { USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 },
267 { }
268};
269
270MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
271
272static struct usb_driver usb_acecad_driver = {
273 .name = "usb_acecad",
274 .probe = usb_acecad_probe,
275 .disconnect = usb_acecad_disconnect,
276 .id_table = usb_acecad_id_table,
277};
278
279module_usb_driver(usb_acecad_driver);
280
