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V4L/DVB (8352): gspca: Buffers for USB exchanges cannot be in the stack.
[mirror_ubuntu-artful-kernel.git] / drivers / media / video / gspca / tv8532.c
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1/*
2 * Quickcam cameras initialization data
3 *
4 * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21#define MODULE_NAME "tv8532"
22
23#include "gspca.h"
24
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25#define DRIVER_VERSION_NUMBER KERNEL_VERSION(2, 1, 7)
26static const char version[] = "2.1.7";
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27
28MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
29MODULE_DESCRIPTION("TV8532 USB Camera Driver");
30MODULE_LICENSE("GPL");
31
32/* specific webcam descriptor */
33struct sd {
34 struct gspca_dev gspca_dev; /* !! must be the first item */
35
36 int buflen; /* current length of tmpbuf */
37 __u8 tmpbuf[352 * 288 + 10 * 288]; /* no protection... */
38 __u8 tmpbuf2[352 * 288]; /* no protection... */
39
40 unsigned short brightness;
41 unsigned short contrast;
42
43 char packet;
44 char synchro;
45};
46
47/* V4L2 controls supported by the driver */
48static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
49static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
50static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
51static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
52
53static struct ctrl sd_ctrls[] = {
54#define SD_BRIGHTNESS 0
55 {
56 {
57 .id = V4L2_CID_BRIGHTNESS,
58 .type = V4L2_CTRL_TYPE_INTEGER,
59 .name = "Brightness",
60 .minimum = 1,
61 .maximum = 0x2ff,
62 .step = 1,
63 .default_value = 0x18f,
64 },
65 .set = sd_setbrightness,
66 .get = sd_getbrightness,
67 },
68#define SD_CONTRAST 1
69 {
70 {
71 .id = V4L2_CID_CONTRAST,
72 .type = V4L2_CTRL_TYPE_INTEGER,
73 .name = "Contrast",
74 .minimum = 0,
75 .maximum = 0xffff,
76 .step = 1,
77 .default_value = 0x7fff,
78 },
79 .set = sd_setcontrast,
80 .get = sd_getcontrast,
81 },
82};
83
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84static struct v4l2_pix_format sif_mode[] = {
85 {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
86 .bytesperline = 176,
87 .sizeimage = 176 * 144,
88 .colorspace = V4L2_COLORSPACE_SRGB,
89 .priv = 1},
90 {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
91 .bytesperline = 352,
92 .sizeimage = 352 * 288,
93 .colorspace = V4L2_COLORSPACE_SRGB,
94 .priv = 0},
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95};
96
97/*
98 * Initialization data: this is the first set-up data written to the
99 * device (before the open data).
100 */
101#define TESTCLK 0x10 /* reg 0x2c -> 0x12 //10 */
102#define TESTCOMP 0x90 /* reg 0x28 -> 0x80 */
103#define TESTLINE 0x81 /* reg 0x29 -> 0x81 */
104#define QCIFLINE 0x41 /* reg 0x29 -> 0x81 */
105#define TESTPTL 0x14 /* reg 0x2D -> 0x14 */
106#define TESTPTH 0x01 /* reg 0x2E -> 0x01 */
107#define TESTPTBL 0x12 /* reg 0x2F -> 0x0a */
108#define TESTPTBH 0x01 /* reg 0x30 -> 0x01 */
109#define ADWIDTHL 0xe8 /* reg 0x0c -> 0xe8 */
110#define ADWIDTHH 0x03 /* reg 0x0d -> 0x03 */
111#define ADHEIGHL 0x90 /* reg 0x0e -> 0x91 //93 */
112#define ADHEIGHH 0x01 /* reg 0x0f -> 0x01 */
113#define EXPOL 0x8f /* reg 0x1c -> 0x8f */
114#define EXPOH 0x01 /* reg 0x1d -> 0x01 */
115#define ADCBEGINL 0x44 /* reg 0x10 -> 0x46 //47 */
116#define ADCBEGINH 0x00 /* reg 0x11 -> 0x00 */
117#define ADRBEGINL 0x0a /* reg 0x14 -> 0x0b //0x0c */
118#define ADRBEGINH 0x00 /* reg 0x15 -> 0x00 */
119#define TV8532_CMD_UPDATE 0x84
120
121#define TV8532_EEprom_Add 0x03
122#define TV8532_EEprom_DataL 0x04
123#define TV8532_EEprom_DataM 0x05
124#define TV8532_EEprom_DataH 0x06
125#define TV8532_EEprom_TableLength 0x07
126#define TV8532_EEprom_Write 0x08
127#define TV8532_PART_CTRL 0x00
128#define TV8532_CTRL 0x01
129#define TV8532_CMD_EEprom_Open 0x30
130#define TV8532_CMD_EEprom_Close 0x29
131#define TV8532_UDP_UPDATE 0x31
132#define TV8532_GPIO 0x39
133#define TV8532_GPIO_OE 0x3B
134#define TV8532_REQ_RegWrite 0x02
135#define TV8532_REQ_RegRead 0x03
136
137#define TV8532_ADWIDTH_L 0x0C
138#define TV8532_ADWIDTH_H 0x0D
139#define TV8532_ADHEIGHT_L 0x0E
140#define TV8532_ADHEIGHT_H 0x0F
141#define TV8532_EXPOSURE 0x1C
142#define TV8532_QUANT_COMP 0x28
143#define TV8532_MODE_PACKET 0x29
144#define TV8532_SETCLK 0x2C
145#define TV8532_POINT_L 0x2D
146#define TV8532_POINT_H 0x2E
147#define TV8532_POINTB_L 0x2F
148#define TV8532_POINTB_H 0x30
149#define TV8532_BUDGET_L 0x2A
150#define TV8532_BUDGET_H 0x2B
151#define TV8532_VID_L 0x34
152#define TV8532_VID_H 0x35
153#define TV8532_PID_L 0x36
154#define TV8532_PID_H 0x37
155#define TV8532_DeviceID 0x83
156#define TV8532_AD_SLOPE 0x91
157#define TV8532_AD_BITCTRL 0x94
158#define TV8532_AD_COLBEGIN_L 0x10
159#define TV8532_AD_COLBEGIN_H 0x11
160#define TV8532_AD_ROWBEGIN_L 0x14
161#define TV8532_AD_ROWBEGIN_H 0x15
162
a5ae2062 163static const __u32 tv_8532_eeprom_data[] = {
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164/* add dataL dataM dataH */
165 0x00010001, 0x01018011, 0x02050014, 0x0305001c,
166 0x040d001e, 0x0505001f, 0x06050519, 0x0705011b,
167 0x0805091e, 0x090d892e, 0x0a05892f, 0x0b050dd9,
168 0x0c0509f1, 0
169};
170
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171static int reg_r(struct gspca_dev *gspca_dev,
172 __u16 index)
6a7eba24 173{
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174 usb_control_msg(gspca_dev->dev,
175 usb_rcvctrlpipe(gspca_dev->dev, 0),
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176 TV8532_REQ_RegRead,
177 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
178 0, /* value */
739570bb 179 index, gspca_dev->usb_buf, 1,
6a7eba24 180 500);
739570bb 181 return gspca_dev->usb_buf[0];
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182}
183
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184/* write 1 byte */
185static void reg_w_1(struct gspca_dev *gspca_dev,
186 __u16 index, __u8 value)
6a7eba24 187{
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188 gspca_dev->usb_buf[0] = value;
189 usb_control_msg(gspca_dev->dev,
190 usb_sndctrlpipe(gspca_dev->dev, 0),
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191 TV8532_REQ_RegWrite,
192 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
193 0, /* value */
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194 index, gspca_dev->usb_buf, 1, 500);
195}
196
197/* write 2 bytes */
198static void reg_w_2(struct gspca_dev *gspca_dev,
199 __u16 index, __u8 val1, __u8 val2)
200{
201 gspca_dev->usb_buf[0] = val1;
202 gspca_dev->usb_buf[1] = val2;
203 usb_control_msg(gspca_dev->dev,
204 usb_sndctrlpipe(gspca_dev->dev, 0),
205 TV8532_REQ_RegWrite,
206 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
207 0, /* value */
208 index, gspca_dev->usb_buf, 2, 500);
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209}
210
211static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
212{
213 int i = 0;
739570bb 214 __u8 reg, data0, data1, data2;
6a7eba24 215
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216 reg_w_1(gspca_dev, TV8532_GPIO, 0xb0);
217 reg_w_1(gspca_dev, TV8532_CTRL, TV8532_CMD_EEprom_Open);
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218/* msleep(1); */
219 while (tv_8532_eeprom_data[i]) {
220 reg = (tv_8532_eeprom_data[i] & 0xff000000) >> 24;
739570bb 221 reg_w_1(gspca_dev, TV8532_EEprom_Add, reg);
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222 /* msleep(1); */
223 data0 = (tv_8532_eeprom_data[i] & 0x000000ff);
739570bb 224 reg_w_1(gspca_dev, TV8532_EEprom_DataL, data0);
6a7eba24 225 /* msleep(1); */
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226 data1 = (tv_8532_eeprom_data[i] & 0x0000ff00) >> 8;
227 reg_w_1(gspca_dev, TV8532_EEprom_DataM, data1);
6a7eba24 228 /* msleep(1); */
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229 data2 = (tv_8532_eeprom_data[i] & 0x00ff0000) >> 16;
230 reg_w_1(gspca_dev, TV8532_EEprom_DataH, data2);
6a7eba24 231 /* msleep(1); */
739570bb 232 reg_w_1(gspca_dev, TV8532_EEprom_Write, 0);
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233 /* msleep(10); */
234 i++;
235 }
739570bb 236 reg_w_1(gspca_dev, TV8532_EEprom_TableLength, i);
6a7eba24 237/* msleep(1); */
739570bb 238 reg_w_1(gspca_dev, TV8532_CTRL, TV8532_CMD_EEprom_Close);
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239 msleep(10);
240}
241
242/* this function is called at probe time */
243static int sd_config(struct gspca_dev *gspca_dev,
244 const struct usb_device_id *id)
245{
246 struct sd *sd = (struct sd *) gspca_dev;
247 struct cam *cam;
248
249 tv_8532WriteEEprom(gspca_dev);
250
251 cam = &gspca_dev->cam;
252 cam->dev_name = (char *) id->driver_info;
253 cam->epaddr = 1;
254 cam->cam_mode = sif_mode;
255 cam->nmodes = sizeof sif_mode / sizeof sif_mode[0];
256
257 sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
258 sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
259 return 0;
260}
261
262static void tv_8532ReadRegisters(struct gspca_dev *gspca_dev)
263{
a5ae2062 264 __u8 data;
6a7eba24 265
739570bb 266 data = reg_r(gspca_dev, 0x0001);
6a7eba24 267 PDEBUG(D_USBI, "register 0x01-> %x", data);
739570bb 268 data = reg_r(gspca_dev, 0x0002);
6a7eba24 269 PDEBUG(D_USBI, "register 0x02-> %x", data);
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270 reg_r(gspca_dev, TV8532_ADWIDTH_L);
271 reg_r(gspca_dev, TV8532_ADWIDTH_H);
272 reg_r(gspca_dev, TV8532_QUANT_COMP);
273 reg_r(gspca_dev, TV8532_MODE_PACKET);
274 reg_r(gspca_dev, TV8532_SETCLK);
275 reg_r(gspca_dev, TV8532_POINT_L);
276 reg_r(gspca_dev, TV8532_POINT_H);
277 reg_r(gspca_dev, TV8532_POINTB_L);
278 reg_r(gspca_dev, TV8532_POINTB_H);
279 reg_r(gspca_dev, TV8532_BUDGET_L);
280 reg_r(gspca_dev, TV8532_BUDGET_H);
281 reg_r(gspca_dev, TV8532_VID_L);
282 reg_r(gspca_dev, TV8532_VID_H);
283 reg_r(gspca_dev, TV8532_PID_L);
284 reg_r(gspca_dev, TV8532_PID_H);
285 reg_r(gspca_dev, TV8532_DeviceID);
286 reg_r(gspca_dev, TV8532_AD_COLBEGIN_L);
287 reg_r(gspca_dev, TV8532_AD_COLBEGIN_H);
288 reg_r(gspca_dev, TV8532_AD_ROWBEGIN_L);
289 reg_r(gspca_dev, TV8532_AD_ROWBEGIN_H);
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290}
291
292static void tv_8532_setReg(struct gspca_dev *gspca_dev)
293{
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294 reg_w_1(gspca_dev, TV8532_AD_COLBEGIN_L,
295 ADCBEGINL); /* 0x10 */
296 reg_w_1(gspca_dev, TV8532_AD_COLBEGIN_H,
297 ADCBEGINH); /* also digital gain */
298 reg_w_1(gspca_dev, TV8532_PART_CTRL,
299 TV8532_CMD_UPDATE); /* 0x00<-0x84 */
300
301 reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0a);
6a7eba24 302 /******************************************************/
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303 reg_w_1(gspca_dev, TV8532_ADHEIGHT_L, ADHEIGHL); /* 0e */
304 reg_w_1(gspca_dev, TV8532_ADHEIGHT_H, ADHEIGHH); /* 0f */
305 reg_w_2(gspca_dev, TV8532_EXPOSURE,
306 EXPOL, EXPOH); /* 350d 0x014c; 1c */
307 reg_w_1(gspca_dev, TV8532_AD_COLBEGIN_L,
308 ADCBEGINL); /* 0x10 */
309 reg_w_1(gspca_dev, TV8532_AD_COLBEGIN_H,
310 ADCBEGINH); /* also digital gain */
311 reg_w_1(gspca_dev, TV8532_AD_ROWBEGIN_L,
312 ADRBEGINL); /* 0x14 */
313
314 reg_w_1(gspca_dev, TV8532_AD_SLOPE, 0x00); /* 0x91 */
315 reg_w_1(gspca_dev, TV8532_AD_BITCTRL, 0x02); /* 0x94 */
316
317 reg_w_1(gspca_dev, TV8532_CTRL,
318 TV8532_CMD_EEprom_Close); /* 0x01 */
319
320 reg_w_1(gspca_dev, TV8532_AD_SLOPE, 0x00); /* 0x91 */
321 reg_w_1(gspca_dev, TV8532_PART_CTRL,
322 TV8532_CMD_UPDATE); /* 0x00<-0x84 */
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323}
324
325static void tv_8532_PollReg(struct gspca_dev *gspca_dev)
326{
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327 int i;
328
329 /* strange polling from tgc */
330 for (i = 0; i < 10; i++) {
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331 reg_w_1(gspca_dev, TV8532_SETCLK,
332 TESTCLK); /* 0x48; //0x08; 0x2c */
333 reg_w_1(gspca_dev, TV8532_PART_CTRL, TV8532_CMD_UPDATE);
334 reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x01); /* 0x31 */
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335 }
336}
337
338/* this function is called at open time */
339static int sd_open(struct gspca_dev *gspca_dev)
340{
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341 reg_w_1(gspca_dev, TV8532_AD_SLOPE, 0x32);
342 reg_w_1(gspca_dev, TV8532_AD_BITCTRL, 0x00);
6a7eba24 343 tv_8532ReadRegisters(gspca_dev);
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344 reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0b);
345 reg_w_2(gspca_dev, TV8532_ADHEIGHT_L, ADHEIGHL,
346 ADHEIGHH); /* 401d 0x0169; 0e */
347 reg_w_2(gspca_dev, TV8532_EXPOSURE, EXPOL,
348 EXPOH); /* 350d 0x014c; 1c */
349 reg_w_1(gspca_dev, TV8532_ADWIDTH_L, ADWIDTHL); /* 0x20; 0x0c */
350 reg_w_1(gspca_dev, TV8532_ADWIDTH_H, ADWIDTHH); /* 0x0d */
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351
352 /*******************************************************************/
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353 reg_w_1(gspca_dev, TV8532_QUANT_COMP,
354 TESTCOMP); /* 0x72 compressed mode 0x28 */
355 reg_w_1(gspca_dev, TV8532_MODE_PACKET,
356 TESTLINE); /* 0x84; // CIF | 4 packet 0x29 */
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357
358 /************************************************/
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359 reg_w_1(gspca_dev, TV8532_SETCLK,
360 TESTCLK); /* 0x48; //0x08; 0x2c */
361 reg_w_1(gspca_dev, TV8532_POINT_L,
362 TESTPTL); /* 0x38; 0x2d */
363 reg_w_1(gspca_dev, TV8532_POINT_H,
364 TESTPTH); /* 0x04; 0x2e */
365 reg_w_1(gspca_dev, TV8532_POINTB_L,
366 TESTPTBL); /* 0x04; 0x2f */
367 reg_w_1(gspca_dev, TV8532_POINTB_H,
368 TESTPTBH); /* 0x04; 0x30 */
369 reg_w_1(gspca_dev, TV8532_PART_CTRL,
370 TV8532_CMD_UPDATE); /* 0x00<-0x84 */
6a7eba24 371 /*************************************************/
739570bb 372 reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x01); /* 0x31 */
6a7eba24 373 msleep(200);
739570bb 374 reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x00); /* 0x31 */
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375 /*************************************************/
376 tv_8532_setReg(gspca_dev);
377 /*************************************************/
739570bb 378 reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0b);
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379 /*************************************************/
380 tv_8532_setReg(gspca_dev);
381 /*************************************************/
382 tv_8532_PollReg(gspca_dev);
383 return 0;
384}
385
386static void setbrightness(struct gspca_dev *gspca_dev)
387{
388 struct sd *sd = (struct sd *) gspca_dev;
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389 int brightness = sd->brightness;
390
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391 reg_w_2(gspca_dev, TV8532_EXPOSURE,
392 brightness >> 8, brightness); /* 1c */
393 reg_w_1(gspca_dev, TV8532_PART_CTRL, TV8532_CMD_UPDATE);
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394}
395
396/* -- start the camera -- */
397static void sd_start(struct gspca_dev *gspca_dev)
398{
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399 reg_w_1(gspca_dev, TV8532_AD_SLOPE, 0x32);
400 reg_w_1(gspca_dev, TV8532_AD_BITCTRL, 0x00);
6a7eba24 401 tv_8532ReadRegisters(gspca_dev);
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402 reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0b);
403 reg_w_2(gspca_dev, TV8532_ADHEIGHT_L,
404 ADHEIGHL, ADHEIGHH); /* 401d 0x0169; 0e */
405/* reg_w_2(gspca_dev, TV8532_EXPOSURE,
406 EXPOL, EXPOH); * 350d 0x014c; 1c */
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407 setbrightness(gspca_dev);
408
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409 reg_w_1(gspca_dev, TV8532_ADWIDTH_L, ADWIDTHL); /* 0x20; 0x0c */
410 reg_w_1(gspca_dev, TV8532_ADWIDTH_H, ADWIDTHH); /* 0x0d */
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411
412 /************************************************/
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413 reg_w_1(gspca_dev, TV8532_QUANT_COMP,
414 TESTCOMP); /* 0x72 compressed mode 0x28 */
c2446b3e 415 if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
6a7eba24 416 /* 176x144 */
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417 reg_w_1(gspca_dev, TV8532_MODE_PACKET,
418 QCIFLINE); /* 0x84; // CIF | 4 packet 0x29 */
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419 } else {
420 /* 352x288 */
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421 reg_w_1(gspca_dev, TV8532_MODE_PACKET,
422 TESTLINE); /* 0x84; // CIF | 4 packet 0x29 */
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423 }
424 /************************************************/
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425 reg_w_1(gspca_dev, TV8532_SETCLK,
426 TESTCLK); /* 0x48; //0x08; 0x2c */
427 reg_w_1(gspca_dev, TV8532_POINT_L,
428 TESTPTL); /* 0x38; 0x2d */
429 reg_w_1(gspca_dev, TV8532_POINT_H,
430 TESTPTH); /* 0x04; 0x2e */
431 reg_w_1(gspca_dev, TV8532_POINTB_L,
432 TESTPTBL); /* 0x04; 0x2f */
433 reg_w_1(gspca_dev, TV8532_POINTB_H,
434 TESTPTBH); /* 0x04; 0x30 */
435 reg_w_1(gspca_dev, TV8532_PART_CTRL,
436 TV8532_CMD_UPDATE); /* 0x00<-0x84 */
6a7eba24 437 /************************************************/
739570bb 438 reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x01); /* 0x31 */
6a7eba24 439 msleep(200);
739570bb 440 reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x00); /* 0x31 */
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441 /************************************************/
442 tv_8532_setReg(gspca_dev);
443 /************************************************/
739570bb 444 reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0b);
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445 /************************************************/
446 tv_8532_setReg(gspca_dev);
447 /************************************************/
448 tv_8532_PollReg(gspca_dev);
739570bb 449 reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x00); /* 0x31 */
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450}
451
452static void sd_stopN(struct gspca_dev *gspca_dev)
453{
739570bb 454 reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0b);
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455}
456
457static void sd_stop0(struct gspca_dev *gspca_dev)
458{
459}
460
461static void sd_close(struct gspca_dev *gspca_dev)
462{
463}
464
465static void tv8532_preprocess(struct gspca_dev *gspca_dev)
466{
467 struct sd *sd = (struct sd *) gspca_dev;
468/* we should received a whole frame with header and EOL marker
469 * in gspca_dev->tmpbuf and return a GBRG pattern in gspca_dev->tmpbuf2
470 * sequence 2bytes header the Alternate pixels bayer GB 4 bytes
471 * Alternate pixels bayer RG 4 bytes EOL */
472 int width = gspca_dev->width;
473 int height = gspca_dev->height;
474 unsigned char *dst = sd->tmpbuf2;
475 unsigned char *data = sd->tmpbuf;
476 int i;
477
478 /* precompute where is the good bayer line */
479 if (((data[3] + data[width + 7]) >> 1)
480 + (data[4] >> 2)
481 + (data[width + 6] >> 1) >= ((data[2] + data[width + 6]) >> 1)
482 + (data[3] >> 2)
483 + (data[width + 5] >> 1))
484 data += 3;
485 else
486 data += 2;
487 for (i = 0; i < height / 2; i++) {
488 memcpy(dst, data, width);
489 data += width + 3;
490 dst += width;
491 memcpy(dst, data, width);
492 data += width + 7;
493 dst += width;
494 }
495}
496
497static void sd_pkt_scan(struct gspca_dev *gspca_dev,
498 struct gspca_frame *frame, /* target */
499 __u8 *data, /* isoc packet */
500 int len) /* iso packet length */
501{
502 struct sd *sd = (struct sd *) gspca_dev;
503
504 if (data[0] != 0x80) {
505 sd->packet++;
506 if (sd->buflen + len > sizeof sd->tmpbuf) {
507 if (gspca_dev->last_packet_type != DISCARD_PACKET) {
508 PDEBUG(D_PACK, "buffer overflow");
509 gspca_dev->last_packet_type = DISCARD_PACKET;
510 }
511 return;
512 }
513 memcpy(&sd->tmpbuf[sd->buflen], data, len);
514 sd->buflen += len;
515 return;
516 }
517
518 /* here we detect 0x80 */
519 /* counter is limited so we need few header for a frame :) */
520
521 /* header 0x80 0x80 0x80 0x80 0x80 */
522 /* packet 00 63 127 145 00 */
523 /* sof 0 1 1 0 0 */
524
525 /* update sequence */
526 if (sd->packet == 63 || sd->packet == 127)
527 sd->synchro = 1;
528
529 /* is there a frame start ? */
530 if (sd->packet >= (gspca_dev->height >> 1) - 1) {
531 PDEBUG(D_PACK, "SOF > %d packet %d", sd->synchro,
532 sd->packet);
533 if (!sd->synchro) { /* start of frame */
534 if (gspca_dev->last_packet_type == FIRST_PACKET) {
535 tv8532_preprocess(gspca_dev);
536 frame = gspca_frame_add(gspca_dev,
537 LAST_PACKET,
538 frame, sd->tmpbuf2,
539 gspca_dev->width *
540 gspca_dev->width);
541 }
542 gspca_frame_add(gspca_dev, FIRST_PACKET,
543 frame, data, 0);
544 memcpy(sd->tmpbuf, data, len);
545 sd->buflen = len;
546 sd->packet = 0;
547 return;
548 }
549 if (gspca_dev->last_packet_type != DISCARD_PACKET) {
550 PDEBUG(D_PACK,
551 "Warning wrong TV8532 frame detection %d",
552 sd->packet);
553 gspca_dev->last_packet_type = DISCARD_PACKET;
554 }
555 return;
556 }
557
558 if (!sd->synchro) {
559 /* Drop packet frame corrupt */
560 PDEBUG(D_PACK, "DROP SOF %d packet %d",
561 sd->synchro, sd->packet);
562 sd->packet = 0;
563 gspca_dev->last_packet_type = DISCARD_PACKET;
564 return;
565 }
566 sd->synchro = 1;
567 sd->packet++;
568 memcpy(&sd->tmpbuf[sd->buflen], data, len);
569 sd->buflen += len;
570}
571
572static void setcontrast(struct gspca_dev *gspca_dev)
573{
574}
575
576static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
577{
578 struct sd *sd = (struct sd *) gspca_dev;
579
580 sd->brightness = val;
581 if (gspca_dev->streaming)
582 setbrightness(gspca_dev);
583 return 0;
584}
585
586static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
587{
588 struct sd *sd = (struct sd *) gspca_dev;
589
590 *val = sd->brightness;
591 return 0;
592}
593
594static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
595{
596 struct sd *sd = (struct sd *) gspca_dev;
597
598 sd->contrast = val;
599 if (gspca_dev->streaming)
600 setcontrast(gspca_dev);
601 return 0;
602}
603
604static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
605{
606 struct sd *sd = (struct sd *) gspca_dev;
607
608 *val = sd->contrast;
609 return 0;
610}
611
612/* sub-driver description */
a5ae2062 613static const struct sd_desc sd_desc = {
6a7eba24
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614 .name = MODULE_NAME,
615 .ctrls = sd_ctrls,
616 .nctrls = ARRAY_SIZE(sd_ctrls),
617 .config = sd_config,
618 .open = sd_open,
619 .start = sd_start,
620 .stopN = sd_stopN,
621 .stop0 = sd_stop0,
622 .close = sd_close,
623 .pkt_scan = sd_pkt_scan,
624};
625
626/* -- module initialisation -- */
627#define DVNM(name) .driver_info = (kernel_ulong_t) name
a5ae2062 628static const __devinitdata struct usb_device_id device_table[] = {
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629 {USB_DEVICE(0x046d, 0x0920), DVNM("QC Express")},
630 {USB_DEVICE(0x046d, 0x0921), DVNM("Labtec Webcam")},
631 {USB_DEVICE(0x0545, 0x808b), DVNM("Veo Stingray")},
632 {USB_DEVICE(0x0545, 0x8333), DVNM("Veo Stingray")},
633 {USB_DEVICE(0x0923, 0x010f), DVNM("ICM532 cams")},
634 {}
635};
636
637MODULE_DEVICE_TABLE(usb, device_table);
638
639/* -- device connect -- */
640static int sd_probe(struct usb_interface *intf,
641 const struct usb_device_id *id)
642{
643 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
644 THIS_MODULE);
645}
646
647static struct usb_driver sd_driver = {
648 .name = MODULE_NAME,
649 .id_table = device_table,
650 .probe = sd_probe,
651 .disconnect = gspca_disconnect,
652};
653
654/* -- module insert / remove -- */
655static int __init sd_mod_init(void)
656{
657 if (usb_register(&sd_driver) < 0)
658 return -1;
659 PDEBUG(D_PROBE, "v%s registered", version);
660 return 0;
661}
662
663static void __exit sd_mod_exit(void)
664{
665 usb_deregister(&sd_driver);
666 PDEBUG(D_PROBE, "deregistered");
667}
668
669module_init(sd_mod_init);
670module_exit(sd_mod_exit);