xref: /openbmc/linux/drivers/input/tablet/acecad.c (revision 4800cd83)
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/init.h>
32 #include <linux/usb/input.h>
33 
34 /*
35  * Version Information
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 
42 MODULE_AUTHOR(DRIVER_AUTHOR);
43 MODULE_DESCRIPTION(DRIVER_DESC);
44 MODULE_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 
50 struct 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 
61 static 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 		/* success */
71 		break;
72 	case -ECONNRESET:
73 	case -ENOENT:
74 	case -ESHUTDOWN:
75 		/* this urb is terminated, clean up */
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 		/* Pressure should compute the same way for flair and 302 */
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 	/* event termination */
103 	input_sync(dev);
104 
105 resubmit:
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 
112 static 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 
123 static 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 
130 static 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 
245 static 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 
257 static 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 
263 MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
264 
265 static 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 
272 static 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 
281 static void __exit usb_acecad_exit(void)
282 {
283 	usb_deregister(&usb_acecad_driver);
284 }
285 
286 module_init(usb_acecad_init);
287 module_exit(usb_acecad_exit);
288