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19#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21#include "m5602_ov9650.h"
22#include "m5602_ov7660.h"
23#include "m5602_mt9m111.h"
24#include "m5602_po1030.h"
25#include "m5602_s5k83a.h"
26#include "m5602_s5k4aa.h"
27
28
29int force_sensor;
30static bool dump_bridge;
31bool dump_sensor;
32
33static const struct usb_device_id m5602_table[] = {
34 {USB_DEVICE(0x0402, 0x5602)},
35 {}
36};
37
38MODULE_DEVICE_TABLE(usb, m5602_table);
39
40
41int m5602_read_bridge(struct sd *sd, const u8 address, u8 *i2c_data)
42{
43 int err;
44 struct gspca_dev *gspca_dev = (struct gspca_dev *) sd;
45 struct usb_device *udev = sd->gspca_dev.dev;
46 __u8 *buf = sd->gspca_dev.usb_buf;
47
48 err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
49 0x04, 0xc0, 0x14,
50 0x8100 + address, buf,
51 1, M5602_URB_MSG_TIMEOUT);
52 *i2c_data = buf[0];
53
54 PDEBUG(D_CONF, "Reading bridge register 0x%x containing 0x%x",
55 address, *i2c_data);
56
57
58
59 return (err < 0) ? err : 0;
60}
61
62
63int m5602_write_bridge(struct sd *sd, const u8 address, const u8 i2c_data)
64{
65 int err;
66 struct gspca_dev *gspca_dev = (struct gspca_dev *) sd;
67 struct usb_device *udev = sd->gspca_dev.dev;
68 __u8 *buf = sd->gspca_dev.usb_buf;
69
70 PDEBUG(D_CONF, "Writing bridge register 0x%x with 0x%x",
71 address, i2c_data);
72
73 memcpy(buf, bridge_urb_skeleton,
74 sizeof(bridge_urb_skeleton));
75 buf[1] = address;
76 buf[3] = i2c_data;
77
78 err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
79 0x04, 0x40, 0x19,
80 0x0000, buf,
81 4, M5602_URB_MSG_TIMEOUT);
82
83
84
85 return (err < 0) ? err : 0;
86}
87
88static int m5602_wait_for_i2c(struct sd *sd)
89{
90 int err;
91 u8 data;
92
93 do {
94 err = m5602_read_bridge(sd, M5602_XB_I2C_STATUS, &data);
95 } while ((data & I2C_BUSY) && !err);
96 return err;
97}
98
99int m5602_read_sensor(struct sd *sd, const u8 address,
100 u8 *i2c_data, const u8 len)
101{
102 int err, i;
103 struct gspca_dev *gspca_dev = (struct gspca_dev *) sd;
104
105 if (!len || len > sd->sensor->i2c_regW)
106 return -EINVAL;
107
108 err = m5602_wait_for_i2c(sd);
109 if (err < 0)
110 return err;
111
112 err = m5602_write_bridge(sd, M5602_XB_I2C_DEV_ADDR,
113 sd->sensor->i2c_slave_id);
114 if (err < 0)
115 return err;
116
117 err = m5602_write_bridge(sd, M5602_XB_I2C_REG_ADDR, address);
118 if (err < 0)
119 return err;
120
121
122
123
124
125 if (sd->sensor->i2c_regW == 1) {
126 err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 1);
127 if (err < 0)
128 return err;
129
130 err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x08);
131 } else {
132 err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x18 + len);
133 }
134
135 for (i = 0; (i < len) && !err; i++) {
136 err = m5602_wait_for_i2c(sd);
137 if (err < 0)
138 return err;
139
140 err = m5602_read_bridge(sd, M5602_XB_I2C_DATA, &(i2c_data[i]));
141
142 PDEBUG(D_CONF, "Reading sensor register "
143 "0x%x containing 0x%x ", address, *i2c_data);
144 }
145 return err;
146}
147
148int m5602_write_sensor(struct sd *sd, const u8 address,
149 u8 *i2c_data, const u8 len)
150{
151 int err, i;
152 u8 *p;
153 struct gspca_dev *gspca_dev = (struct gspca_dev *) sd;
154 struct usb_device *udev = sd->gspca_dev.dev;
155 __u8 *buf = sd->gspca_dev.usb_buf;
156
157
158 if (len > sd->sensor->i2c_regW || !len)
159 return -EINVAL;
160
161 memcpy(buf, sensor_urb_skeleton,
162 sizeof(sensor_urb_skeleton));
163
164 buf[11] = sd->sensor->i2c_slave_id;
165 buf[15] = address;
166
167
168 p = buf + 16;
169
170
171 for (i = 0; i < len; i++) {
172 memcpy(p, sensor_urb_skeleton + 16, 4);
173 p[3] = i2c_data[i];
174 p += 4;
175 PDEBUG(D_CONF, "Writing sensor register 0x%x with 0x%x",
176 address, i2c_data[i]);
177 }
178
179
180 memcpy(p, sensor_urb_skeleton + 20, 4);
181
182
183 p[3] = 0x10 + len;
184
185 err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
186 0x04, 0x40, 0x19,
187 0x0000, buf,
188 20 + len * 4, M5602_URB_MSG_TIMEOUT);
189
190 return (err < 0) ? err : 0;
191}
192
193
194
195static void m5602_dump_bridge(struct sd *sd)
196{
197 int i;
198 for (i = 0; i < 0x80; i++) {
199 unsigned char val = 0;
200 m5602_read_bridge(sd, i, &val);
201 pr_info("ALi m5602 address 0x%x contains 0x%x\n", i, val);
202 }
203 pr_info("Warning: The ALi m5602 webcam probably won't work until it's power cycled\n");
204}
205
206static int m5602_probe_sensor(struct sd *sd)
207{
208
209 sd->sensor = &po1030;
210 if (!sd->sensor->probe(sd))
211 return 0;
212
213
214 sd->sensor = &mt9m111;
215 if (!sd->sensor->probe(sd))
216 return 0;
217
218
219 sd->sensor = &s5k4aa;
220 if (!sd->sensor->probe(sd))
221 return 0;
222
223
224 sd->sensor = &ov9650;
225 if (!sd->sensor->probe(sd))
226 return 0;
227
228
229 sd->sensor = &ov7660;
230 if (!sd->sensor->probe(sd))
231 return 0;
232
233
234 sd->sensor = &s5k83a;
235 if (!sd->sensor->probe(sd))
236 return 0;
237
238
239 pr_info("Failed to find a sensor\n");
240 sd->sensor = NULL;
241 return -ENODEV;
242}
243
244static int m5602_configure(struct gspca_dev *gspca_dev,
245 const struct usb_device_id *id);
246
247static int m5602_init(struct gspca_dev *gspca_dev)
248{
249 struct sd *sd = (struct sd *) gspca_dev;
250 int err;
251
252 PDEBUG(D_CONF, "Initializing ALi m5602 webcam");
253
254 err = sd->sensor->init(sd);
255
256 return err;
257}
258
259static int m5602_init_controls(struct gspca_dev *gspca_dev)
260{
261 struct sd *sd = (struct sd *) gspca_dev;
262
263 if (!sd->sensor->init_controls)
264 return 0;
265
266 return sd->sensor->init_controls(sd);
267}
268
269static int m5602_start_transfer(struct gspca_dev *gspca_dev)
270{
271 struct sd *sd = (struct sd *) gspca_dev;
272 __u8 *buf = sd->gspca_dev.usb_buf;
273 int err;
274
275
276 const u8 buffer[4] = {0x13, 0xf9, 0x0f, 0x01};
277
278 if (sd->sensor->start)
279 sd->sensor->start(sd);
280
281 memcpy(buf, buffer, sizeof(buffer));
282 err = usb_control_msg(gspca_dev->dev,
283 usb_sndctrlpipe(gspca_dev->dev, 0),
284 0x04, 0x40, 0x19, 0x0000, buf,
285 sizeof(buffer), M5602_URB_MSG_TIMEOUT);
286
287 PDEBUG(D_STREAM, "Transfer started");
288 return (err < 0) ? err : 0;
289}
290
291static void m5602_urb_complete(struct gspca_dev *gspca_dev,
292 u8 *data, int len)
293{
294 struct sd *sd = (struct sd *) gspca_dev;
295
296 if (len < 6) {
297 PDEBUG(D_PACK, "Packet is less than 6 bytes");
298 return;
299 }
300
301
302 if (data[0] == 0xff && data[4] == 0xff && data[5] == 0xff &&
303 data[2] != sd->frame_id) {
304 PDEBUG(D_FRAM, "Frame delimiter detected");
305 sd->frame_id = data[2];
306
307
308 data += 6;
309 len -= 6;
310
311
312 gspca_frame_add(gspca_dev, LAST_PACKET,
313 NULL, 0);
314 sd->frame_count++;
315
316
317 gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
318
319 PDEBUG(D_FRAM, "Starting new frame %d",
320 sd->frame_count);
321
322 } else {
323 int cur_frame_len;
324
325 cur_frame_len = gspca_dev->image_len;
326
327 data += 4;
328 len -= 4;
329
330 if (cur_frame_len + len <= gspca_dev->frsz) {
331 PDEBUG(D_FRAM, "Continuing frame %d copying %d bytes",
332 sd->frame_count, len);
333
334 gspca_frame_add(gspca_dev, INTER_PACKET,
335 data, len);
336 } else {
337
338 gspca_frame_add(gspca_dev, INTER_PACKET, data,
339 gspca_dev->frsz - cur_frame_len);
340 }
341 }
342}
343
344static void m5602_stop_transfer(struct gspca_dev *gspca_dev)
345{
346 struct sd *sd = (struct sd *) gspca_dev;
347
348
349 if (sd->sensor->stop)
350 sd->sensor->stop(sd);
351}
352
353
354static const struct sd_desc sd_desc = {
355 .name = MODULE_NAME,
356 .config = m5602_configure,
357 .init = m5602_init,
358 .init_controls = m5602_init_controls,
359 .start = m5602_start_transfer,
360 .stopN = m5602_stop_transfer,
361 .pkt_scan = m5602_urb_complete
362};
363
364
365static int m5602_configure(struct gspca_dev *gspca_dev,
366 const struct usb_device_id *id)
367{
368 struct sd *sd = (struct sd *) gspca_dev;
369 struct cam *cam;
370 int err;
371
372 cam = &gspca_dev->cam;
373
374 if (dump_bridge)
375 m5602_dump_bridge(sd);
376
377
378 err = m5602_probe_sensor(sd);
379 if (err)
380 goto fail;
381
382 return 0;
383
384fail:
385 PERR("ALi m5602 webcam failed");
386 cam->cam_mode = NULL;
387 cam->nmodes = 0;
388
389 return err;
390}
391
392static int m5602_probe(struct usb_interface *intf,
393 const struct usb_device_id *id)
394{
395 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
396 THIS_MODULE);
397}
398
399static void m5602_disconnect(struct usb_interface *intf)
400{
401 struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
402 struct sd *sd = (struct sd *) gspca_dev;
403
404 if (sd->sensor->disconnect)
405 sd->sensor->disconnect(sd);
406
407 gspca_disconnect(intf);
408}
409
410static struct usb_driver sd_driver = {
411 .name = MODULE_NAME,
412 .id_table = m5602_table,
413 .probe = m5602_probe,
414#ifdef CONFIG_PM
415 .suspend = gspca_suspend,
416 .resume = gspca_resume,
417 .reset_resume = gspca_resume,
418#endif
419 .disconnect = m5602_disconnect
420};
421
422module_usb_driver(sd_driver);
423
424MODULE_AUTHOR(DRIVER_AUTHOR);
425MODULE_DESCRIPTION(DRIVER_DESC);
426MODULE_LICENSE("GPL");
427module_param(force_sensor, int, S_IRUGO | S_IWUSR);
428MODULE_PARM_DESC(force_sensor,
429 "forces detection of a sensor, "
430 "1 = OV9650, 2 = S5K83A, 3 = S5K4AA, "
431 "4 = MT9M111, 5 = PO1030, 6 = OV7660");
432
433module_param(dump_bridge, bool, S_IRUGO | S_IWUSR);
434MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup");
435
436module_param(dump_sensor, bool, S_IRUGO | S_IWUSR);
437MODULE_PARM_DESC(dump_sensor, "Dumps all usb sensor registers "
438 "at startup providing a sensor is found");
439