1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
29#define MODULE_NAME "kinect"
30
31#include "gspca.h"
32
33#define CTRL_TIMEOUT 500
34
35MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
36MODULE_DESCRIPTION("GSPCA/Kinect Sensor Device USB Camera Driver");
37MODULE_LICENSE("GPL");
38
39struct pkt_hdr {
40 uint8_t magic[2];
41 uint8_t pad;
42 uint8_t flag;
43 uint8_t unk1;
44 uint8_t seq;
45 uint8_t unk2;
46 uint8_t unk3;
47 uint32_t timestamp;
48};
49
50struct cam_hdr {
51 uint8_t magic[2];
52 uint16_t len;
53 uint16_t cmd;
54 uint16_t tag;
55};
56
57
58struct sd {
59 struct gspca_dev gspca_dev;
60 uint16_t cam_tag;
61 uint8_t stream_flag;
62 uint8_t obuf[0x400];
63 uint8_t ibuf[0x200];
64};
65
66#define MODE_640x480 0x0001
67#define MODE_640x488 0x0002
68#define MODE_1280x1024 0x0004
69
70#define FORMAT_BAYER 0x0010
71#define FORMAT_UYVY 0x0020
72#define FORMAT_Y10B 0x0040
73
74#define FPS_HIGH 0x0100
75
76static const struct v4l2_pix_format video_camera_mode[] = {
77 {640, 480, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
78 .bytesperline = 640,
79 .sizeimage = 640 * 480,
80 .colorspace = V4L2_COLORSPACE_SRGB,
81 .priv = MODE_640x480 | FORMAT_BAYER | FPS_HIGH},
82 {640, 480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE,
83 .bytesperline = 640 * 2,
84 .sizeimage = 640 * 480 * 2,
85 .colorspace = V4L2_COLORSPACE_SRGB,
86 .priv = MODE_640x480 | FORMAT_UYVY},
87 {1280, 1024, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
88 .bytesperline = 1280,
89 .sizeimage = 1280 * 1024,
90 .colorspace = V4L2_COLORSPACE_SRGB,
91 .priv = MODE_1280x1024 | FORMAT_BAYER},
92 {640, 488, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
93 .bytesperline = 640 * 10 / 8,
94 .sizeimage = 640 * 488 * 10 / 8,
95 .colorspace = V4L2_COLORSPACE_SRGB,
96 .priv = MODE_640x488 | FORMAT_Y10B | FPS_HIGH},
97 {1280, 1024, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
98 .bytesperline = 1280 * 10 / 8,
99 .sizeimage = 1280 * 1024 * 10 / 8,
100 .colorspace = V4L2_COLORSPACE_SRGB,
101 .priv = MODE_1280x1024 | FORMAT_Y10B},
102};
103
104static int kinect_write(struct usb_device *udev, uint8_t *data,
105 uint16_t wLength)
106{
107 return usb_control_msg(udev,
108 usb_sndctrlpipe(udev, 0),
109 0x00,
110 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
111 0, 0, data, wLength, CTRL_TIMEOUT);
112}
113
114static int kinect_read(struct usb_device *udev, uint8_t *data, uint16_t wLength)
115{
116 return usb_control_msg(udev,
117 usb_rcvctrlpipe(udev, 0),
118 0x00,
119 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
120 0, 0, data, wLength, CTRL_TIMEOUT);
121}
122
123static int send_cmd(struct gspca_dev *gspca_dev, uint16_t cmd, void *cmdbuf,
124 unsigned int cmd_len, void *replybuf, unsigned int reply_len)
125{
126 struct sd *sd = (struct sd *) gspca_dev;
127 struct usb_device *udev = gspca_dev->dev;
128 int res, actual_len;
129 uint8_t *obuf = sd->obuf;
130 uint8_t *ibuf = sd->ibuf;
131 struct cam_hdr *chdr = (void *)obuf;
132 struct cam_hdr *rhdr = (void *)ibuf;
133
134 if (cmd_len & 1 || cmd_len > (0x400 - sizeof(*chdr))) {
135 pr_err("send_cmd: Invalid command length (0x%x)\n", cmd_len);
136 return -1;
137 }
138
139 chdr->magic[0] = 0x47;
140 chdr->magic[1] = 0x4d;
141 chdr->cmd = cpu_to_le16(cmd);
142 chdr->tag = cpu_to_le16(sd->cam_tag);
143 chdr->len = cpu_to_le16(cmd_len / 2);
144
145 memcpy(obuf+sizeof(*chdr), cmdbuf, cmd_len);
146
147 res = kinect_write(udev, obuf, cmd_len + sizeof(*chdr));
148 PDEBUG(D_USBO, "Control cmd=%04x tag=%04x len=%04x: %d", cmd,
149 sd->cam_tag, cmd_len, res);
150 if (res < 0) {
151 pr_err("send_cmd: Output control transfer failed (%d)\n", res);
152 return res;
153 }
154
155 do {
156 actual_len = kinect_read(udev, ibuf, 0x200);
157 } while (actual_len == 0);
158 PDEBUG(D_USBO, "Control reply: %d", res);
159 if (actual_len < sizeof(*rhdr)) {
160 pr_err("send_cmd: Input control transfer failed (%d)\n", res);
161 return res;
162 }
163 actual_len -= sizeof(*rhdr);
164
165 if (rhdr->magic[0] != 0x52 || rhdr->magic[1] != 0x42) {
166 pr_err("send_cmd: Bad magic %02x %02x\n",
167 rhdr->magic[0], rhdr->magic[1]);
168 return -1;
169 }
170 if (rhdr->cmd != chdr->cmd) {
171 pr_err("send_cmd: Bad cmd %02x != %02x\n",
172 rhdr->cmd, chdr->cmd);
173 return -1;
174 }
175 if (rhdr->tag != chdr->tag) {
176 pr_err("send_cmd: Bad tag %04x != %04x\n",
177 rhdr->tag, chdr->tag);
178 return -1;
179 }
180 if (cpu_to_le16(rhdr->len) != (actual_len/2)) {
181 pr_err("send_cmd: Bad len %04x != %04x\n",
182 cpu_to_le16(rhdr->len), (int)(actual_len/2));
183 return -1;
184 }
185
186 if (actual_len > reply_len) {
187 pr_warn("send_cmd: Data buffer is %d bytes long, but got %d bytes\n",
188 reply_len, actual_len);
189 memcpy(replybuf, ibuf+sizeof(*rhdr), reply_len);
190 } else {
191 memcpy(replybuf, ibuf+sizeof(*rhdr), actual_len);
192 }
193
194 sd->cam_tag++;
195
196 return actual_len;
197}
198
199static int write_register(struct gspca_dev *gspca_dev, uint16_t reg,
200 uint16_t data)
201{
202 uint16_t reply[2];
203 uint16_t cmd[2];
204 int res;
205
206 cmd[0] = cpu_to_le16(reg);
207 cmd[1] = cpu_to_le16(data);
208
209 PDEBUG(D_USBO, "Write Reg 0x%04x <= 0x%02x", reg, data);
210 res = send_cmd(gspca_dev, 0x03, cmd, 4, reply, 4);
211 if (res < 0)
212 return res;
213 if (res != 2) {
214 pr_warn("send_cmd returned %d [%04x %04x], 0000 expected\n",
215 res, reply[0], reply[1]);
216 }
217 return 0;
218}
219
220
221static int sd_config(struct gspca_dev *gspca_dev,
222 const struct usb_device_id *id)
223{
224 struct sd *sd = (struct sd *) gspca_dev;
225 struct cam *cam;
226
227 sd->cam_tag = 0;
228
229
230
231 sd->stream_flag = 0x80;
232
233 cam = &gspca_dev->cam;
234
235 cam->cam_mode = video_camera_mode;
236 cam->nmodes = ARRAY_SIZE(video_camera_mode);
237
238#if 0
239
240 cam->npkt = 15;
241 gspca_dev->pkt_size = 960 * 2;
242#endif
243
244 return 0;
245}
246
247
248static int sd_init(struct gspca_dev *gspca_dev)
249{
250 PDEBUG(D_PROBE, "Kinect Camera device.");
251
252 return 0;
253}
254
255static int sd_start(struct gspca_dev *gspca_dev)
256{
257 int mode;
258 uint8_t fmt_reg, fmt_val;
259 uint8_t res_reg, res_val;
260 uint8_t fps_reg, fps_val;
261 uint8_t mode_val;
262
263 mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
264
265 if (mode & FORMAT_Y10B) {
266 fmt_reg = 0x19;
267 res_reg = 0x1a;
268 fps_reg = 0x1b;
269 mode_val = 0x03;
270 } else {
271 fmt_reg = 0x0c;
272 res_reg = 0x0d;
273 fps_reg = 0x0e;
274 mode_val = 0x01;
275 }
276
277
278 if (mode & FORMAT_UYVY)
279 fmt_val = 0x05;
280 else
281 fmt_val = 0x00;
282
283 if (mode & MODE_1280x1024)
284 res_val = 0x02;
285 else
286 res_val = 0x01;
287
288 if (mode & FPS_HIGH)
289 fps_val = 0x1e;
290 else
291 fps_val = 0x0f;
292
293
294
295 write_register(gspca_dev, 0x105, 0x00);
296
297
298 write_register(gspca_dev, 0x05, 0x00);
299
300
301
302
303
304
305
306
307 if (mode & (FORMAT_Y10B | MODE_1280x1024)) {
308 write_register(gspca_dev, 0x13, 0x01);
309 write_register(gspca_dev, 0x14, 0x1e);
310 write_register(gspca_dev, 0x06, 0x02);
311 write_register(gspca_dev, 0x06, 0x00);
312 }
313
314 write_register(gspca_dev, fmt_reg, fmt_val);
315 write_register(gspca_dev, res_reg, res_val);
316 write_register(gspca_dev, fps_reg, fps_val);
317
318
319 write_register(gspca_dev, 0x05, mode_val);
320
321
322 write_register(gspca_dev, 0x47, 0x00);
323
324 return 0;
325}
326
327static void sd_stopN(struct gspca_dev *gspca_dev)
328{
329
330 write_register(gspca_dev, 0x05, 0x00);
331}
332
333static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *__data, int len)
334{
335 struct sd *sd = (struct sd *) gspca_dev;
336
337 struct pkt_hdr *hdr = (void *)__data;
338 uint8_t *data = __data + sizeof(*hdr);
339 int datalen = len - sizeof(*hdr);
340
341 uint8_t sof = sd->stream_flag | 1;
342 uint8_t mof = sd->stream_flag | 2;
343 uint8_t eof = sd->stream_flag | 5;
344
345 if (len < 12)
346 return;
347
348 if (hdr->magic[0] != 'R' || hdr->magic[1] != 'B') {
349 pr_warn("[Stream %02x] Invalid magic %02x%02x\n",
350 sd->stream_flag, hdr->magic[0], hdr->magic[1]);
351 return;
352 }
353
354 if (hdr->flag == sof)
355 gspca_frame_add(gspca_dev, FIRST_PACKET, data, datalen);
356
357 else if (hdr->flag == mof)
358 gspca_frame_add(gspca_dev, INTER_PACKET, data, datalen);
359
360 else if (hdr->flag == eof)
361 gspca_frame_add(gspca_dev, LAST_PACKET, data, datalen);
362
363 else
364 pr_warn("Packet type not recognized...\n");
365}
366
367
368static const struct sd_desc sd_desc = {
369 .name = MODULE_NAME,
370 .config = sd_config,
371 .init = sd_init,
372 .start = sd_start,
373 .stopN = sd_stopN,
374 .pkt_scan = sd_pkt_scan,
375
376
377
378
379};
380
381
382static const struct usb_device_id device_table[] = {
383 {USB_DEVICE(0x045e, 0x02ae)},
384 {USB_DEVICE(0x045e, 0x02bf)},
385 {}
386};
387
388MODULE_DEVICE_TABLE(usb, device_table);
389
390
391static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id)
392{
393 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
394 THIS_MODULE);
395}
396
397static struct usb_driver sd_driver = {
398 .name = MODULE_NAME,
399 .id_table = device_table,
400 .probe = sd_probe,
401 .disconnect = gspca_disconnect,
402#ifdef CONFIG_PM
403 .suspend = gspca_suspend,
404 .resume = gspca_resume,
405 .reset_resume = gspca_resume,
406#endif
407};
408
409module_usb_driver(sd_driver);
410