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Adding support for MOXA ART SoC. Testing port of linux-2.6.32.60-moxart.
[linux-3.6.7-moxart.git] / drivers / media / video / gspca / cpia1.c
blob2499a881d9a3ab68c8a4190f9ac19fb6d41ad3ed
1 /*
2 * cpia CPiA (1) gspca driver
3 *
4 * Copyright (C) 2010-2011 Hans de Goede <hdegoede@redhat.com>
5 *
6 * This module is adapted from the in kernel v4l1 cpia driver which is :
7 *
8 * (C) Copyright 1999-2000 Peter Pregler
9 * (C) Copyright 1999-2000 Scott J. Bertin
10 * (C) Copyright 1999-2000 Johannes Erdfelt <johannes@erdfelt.com>
11 * (C) Copyright 2000 STMicroelectronics
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *
27 */
28
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30
31 #define MODULE_NAME "cpia1"
32
33 #include <linux/input.h>
34 #include "gspca.h"
35
36 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
37 MODULE_DESCRIPTION("Vision CPiA");
38 MODULE_LICENSE("GPL");
39
40 /* constant value's */
41 #define MAGIC_0 0x19
42 #define MAGIC_1 0x68
43 #define DATA_IN 0xc0
44 #define DATA_OUT 0x40
45 #define VIDEOSIZE_QCIF 0 /* 176x144 */
46 #define VIDEOSIZE_CIF 1 /* 352x288 */
47 #define SUBSAMPLE_420 0
48 #define SUBSAMPLE_422 1
49 #define YUVORDER_YUYV 0
50 #define YUVORDER_UYVY 1
51 #define NOT_COMPRESSED 0
52 #define COMPRESSED 1
53 #define NO_DECIMATION 0
54 #define DECIMATION_ENAB 1
55 #define EOI 0xff /* End Of Image */
56 #define EOL 0xfd /* End Of Line */
57 #define FRAME_HEADER_SIZE 64
58
59 /* Image grab modes */
60 #define CPIA_GRAB_SINGLE 0
61 #define CPIA_GRAB_CONTINEOUS 1
62
63 /* Compression parameters */
64 #define CPIA_COMPRESSION_NONE 0
65 #define CPIA_COMPRESSION_AUTO 1
66 #define CPIA_COMPRESSION_MANUAL 2
67 #define CPIA_COMPRESSION_TARGET_QUALITY 0
68 #define CPIA_COMPRESSION_TARGET_FRAMERATE 1
69
70 /* Return offsets for GetCameraState */
71 #define SYSTEMSTATE 0
72 #define GRABSTATE 1
73 #define STREAMSTATE 2
74 #define FATALERROR 3
75 #define CMDERROR 4
76 #define DEBUGFLAGS 5
77 #define VPSTATUS 6
78 #define ERRORCODE 7
79
80 /* SystemState */
81 #define UNINITIALISED_STATE 0
82 #define PASS_THROUGH_STATE 1
83 #define LO_POWER_STATE 2
84 #define HI_POWER_STATE 3
85 #define WARM_BOOT_STATE 4
86
87 /* GrabState */
88 #define GRAB_IDLE 0
89 #define GRAB_ACTIVE 1
90 #define GRAB_DONE 2
91
92 /* StreamState */
93 #define STREAM_NOT_READY 0
94 #define STREAM_READY 1
95 #define STREAM_OPEN 2
96 #define STREAM_PAUSED 3
97 #define STREAM_FINISHED 4
98
99 /* Fatal Error, CmdError, and DebugFlags */
100 #define CPIA_FLAG 1
101 #define SYSTEM_FLAG 2
102 #define INT_CTRL_FLAG 4
103 #define PROCESS_FLAG 8
104 #define COM_FLAG 16
105 #define VP_CTRL_FLAG 32
106 #define CAPTURE_FLAG 64
107 #define DEBUG_FLAG 128
108
109 /* VPStatus */
110 #define VP_STATE_OK 0x00
111
112 #define VP_STATE_FAILED_VIDEOINIT 0x01
113 #define VP_STATE_FAILED_AECACBINIT 0x02
114 #define VP_STATE_AEC_MAX 0x04
115 #define VP_STATE_ACB_BMAX 0x08
116
117 #define VP_STATE_ACB_RMIN 0x10
118 #define VP_STATE_ACB_GMIN 0x20
119 #define VP_STATE_ACB_RMAX 0x40
120 #define VP_STATE_ACB_GMAX 0x80
121
122 /* default (minimum) compensation values */
123 #define COMP_RED 220
124 #define COMP_GREEN1 214
125 #define COMP_GREEN2 COMP_GREEN1
126 #define COMP_BLUE 230
127
128 /* exposure status */
129 #define EXPOSURE_VERY_LIGHT 0
130 #define EXPOSURE_LIGHT 1
131 #define EXPOSURE_NORMAL 2
132 #define EXPOSURE_DARK 3
133 #define EXPOSURE_VERY_DARK 4
134
135 #define CPIA_MODULE_CPIA (0 << 5)
136 #define CPIA_MODULE_SYSTEM (1 << 5)
137 #define CPIA_MODULE_VP_CTRL (5 << 5)
138 #define CPIA_MODULE_CAPTURE (6 << 5)
139 #define CPIA_MODULE_DEBUG (7 << 5)
140
141 #define INPUT (DATA_IN << 8)
142 #define OUTPUT (DATA_OUT << 8)
143
144 #define CPIA_COMMAND_GetCPIAVersion (INPUT | CPIA_MODULE_CPIA | 1)
145 #define CPIA_COMMAND_GetPnPID (INPUT | CPIA_MODULE_CPIA | 2)
146 #define CPIA_COMMAND_GetCameraStatus (INPUT | CPIA_MODULE_CPIA | 3)
147 #define CPIA_COMMAND_GotoHiPower (OUTPUT | CPIA_MODULE_CPIA | 4)
148 #define CPIA_COMMAND_GotoLoPower (OUTPUT | CPIA_MODULE_CPIA | 5)
149 #define CPIA_COMMAND_GotoSuspend (OUTPUT | CPIA_MODULE_CPIA | 7)
150 #define CPIA_COMMAND_GotoPassThrough (OUTPUT | CPIA_MODULE_CPIA | 8)
151 #define CPIA_COMMAND_ModifyCameraStatus (OUTPUT | CPIA_MODULE_CPIA | 10)
152
153 #define CPIA_COMMAND_ReadVCRegs (INPUT | CPIA_MODULE_SYSTEM | 1)
154 #define CPIA_COMMAND_WriteVCReg (OUTPUT | CPIA_MODULE_SYSTEM | 2)
155 #define CPIA_COMMAND_ReadMCPorts (INPUT | CPIA_MODULE_SYSTEM | 3)
156 #define CPIA_COMMAND_WriteMCPort (OUTPUT | CPIA_MODULE_SYSTEM | 4)
157 #define CPIA_COMMAND_SetBaudRate (OUTPUT | CPIA_MODULE_SYSTEM | 5)
158 #define CPIA_COMMAND_SetECPTiming (OUTPUT | CPIA_MODULE_SYSTEM | 6)
159 #define CPIA_COMMAND_ReadIDATA (INPUT | CPIA_MODULE_SYSTEM | 7)
160 #define CPIA_COMMAND_WriteIDATA (OUTPUT | CPIA_MODULE_SYSTEM | 8)
161 #define CPIA_COMMAND_GenericCall (OUTPUT | CPIA_MODULE_SYSTEM | 9)
162 #define CPIA_COMMAND_I2CStart (OUTPUT | CPIA_MODULE_SYSTEM | 10)
163 #define CPIA_COMMAND_I2CStop (OUTPUT | CPIA_MODULE_SYSTEM | 11)
164 #define CPIA_COMMAND_I2CWrite (OUTPUT | CPIA_MODULE_SYSTEM | 12)
165 #define CPIA_COMMAND_I2CRead (INPUT | CPIA_MODULE_SYSTEM | 13)
166
167 #define CPIA_COMMAND_GetVPVersion (INPUT | CPIA_MODULE_VP_CTRL | 1)
168 #define CPIA_COMMAND_ResetFrameCounter (INPUT | CPIA_MODULE_VP_CTRL | 2)
169 #define CPIA_COMMAND_SetColourParams (OUTPUT | CPIA_MODULE_VP_CTRL | 3)
170 #define CPIA_COMMAND_SetExposure (OUTPUT | CPIA_MODULE_VP_CTRL | 4)
171 #define CPIA_COMMAND_SetColourBalance (OUTPUT | CPIA_MODULE_VP_CTRL | 6)
172 #define CPIA_COMMAND_SetSensorFPS (OUTPUT | CPIA_MODULE_VP_CTRL | 7)
173 #define CPIA_COMMAND_SetVPDefaults (OUTPUT | CPIA_MODULE_VP_CTRL | 8)
174 #define CPIA_COMMAND_SetApcor (OUTPUT | CPIA_MODULE_VP_CTRL | 9)
175 #define CPIA_COMMAND_SetFlickerCtrl (OUTPUT | CPIA_MODULE_VP_CTRL | 10)
176 #define CPIA_COMMAND_SetVLOffset (OUTPUT | CPIA_MODULE_VP_CTRL | 11)
177 #define CPIA_COMMAND_GetColourParams (INPUT | CPIA_MODULE_VP_CTRL | 16)
178 #define CPIA_COMMAND_GetColourBalance (INPUT | CPIA_MODULE_VP_CTRL | 17)
179 #define CPIA_COMMAND_GetExposure (INPUT | CPIA_MODULE_VP_CTRL | 18)
180 #define CPIA_COMMAND_SetSensorMatrix (OUTPUT | CPIA_MODULE_VP_CTRL | 19)
181 #define CPIA_COMMAND_ColourBars (OUTPUT | CPIA_MODULE_VP_CTRL | 25)
182 #define CPIA_COMMAND_ReadVPRegs (INPUT | CPIA_MODULE_VP_CTRL | 30)
183 #define CPIA_COMMAND_WriteVPReg (OUTPUT | CPIA_MODULE_VP_CTRL | 31)
184
185 #define CPIA_COMMAND_GrabFrame (OUTPUT | CPIA_MODULE_CAPTURE | 1)
186 #define CPIA_COMMAND_UploadFrame (OUTPUT | CPIA_MODULE_CAPTURE | 2)
187 #define CPIA_COMMAND_SetGrabMode (OUTPUT | CPIA_MODULE_CAPTURE | 3)
188 #define CPIA_COMMAND_InitStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 4)
189 #define CPIA_COMMAND_FiniStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 5)
190 #define CPIA_COMMAND_StartStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 6)
191 #define CPIA_COMMAND_EndStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 7)
192 #define CPIA_COMMAND_SetFormat (OUTPUT | CPIA_MODULE_CAPTURE | 8)
193 #define CPIA_COMMAND_SetROI (OUTPUT | CPIA_MODULE_CAPTURE | 9)
194 #define CPIA_COMMAND_SetCompression (OUTPUT | CPIA_MODULE_CAPTURE | 10)
195 #define CPIA_COMMAND_SetCompressionTarget (OUTPUT | CPIA_MODULE_CAPTURE | 11)
196 #define CPIA_COMMAND_SetYUVThresh (OUTPUT | CPIA_MODULE_CAPTURE | 12)
197 #define CPIA_COMMAND_SetCompressionParams (OUTPUT | CPIA_MODULE_CAPTURE | 13)
198 #define CPIA_COMMAND_DiscardFrame (OUTPUT | CPIA_MODULE_CAPTURE | 14)
199 #define CPIA_COMMAND_GrabReset (OUTPUT | CPIA_MODULE_CAPTURE | 15)
200
201 #define CPIA_COMMAND_OutputRS232 (OUTPUT | CPIA_MODULE_DEBUG | 1)
202 #define CPIA_COMMAND_AbortProcess (OUTPUT | CPIA_MODULE_DEBUG | 4)
203 #define CPIA_COMMAND_SetDramPage (OUTPUT | CPIA_MODULE_DEBUG | 5)
204 #define CPIA_COMMAND_StartDramUpload (OUTPUT | CPIA_MODULE_DEBUG | 6)
205 #define CPIA_COMMAND_StartDummyDtream (OUTPUT | CPIA_MODULE_DEBUG | 8)
206 #define CPIA_COMMAND_AbortStream (OUTPUT | CPIA_MODULE_DEBUG | 9)
207 #define CPIA_COMMAND_DownloadDRAM (OUTPUT | CPIA_MODULE_DEBUG | 10)
208 #define CPIA_COMMAND_Null (OUTPUT | CPIA_MODULE_DEBUG | 11)
209
210 #define ROUND_UP_EXP_FOR_FLICKER 15
211
212 /* Constants for automatic frame rate adjustment */
213 #define MAX_EXP 302
214 #define MAX_EXP_102 255
215 #define LOW_EXP 140
216 #define VERY_LOW_EXP 70
217 #define TC 94
218 #define EXP_ACC_DARK 50
219 #define EXP_ACC_LIGHT 90
220 #define HIGH_COMP_102 160
221 #define MAX_COMP 239
222 #define DARK_TIME 3
223 #define LIGHT_TIME 3
224
225 #define FIRMWARE_VERSION(x, y) (sd->params.version.firmwareVersion == (x) && \
226 sd->params.version.firmwareRevision == (y))
227
228 #define CPIA1_CID_COMP_TARGET (V4L2_CTRL_CLASS_USER + 0x1000)
229 #define BRIGHTNESS_DEF 50
230 #define CONTRAST_DEF 48
231 #define SATURATION_DEF 50
232 #define FREQ_DEF V4L2_CID_POWER_LINE_FREQUENCY_50HZ
233 #define ILLUMINATORS_1_DEF 0
234 #define ILLUMINATORS_2_DEF 0
235 #define COMP_TARGET_DEF CPIA_COMPRESSION_TARGET_QUALITY
236
237 /* Developer's Guide Table 5 p 3-34
238 * indexed by [mains][sensorFps.baserate][sensorFps.divisor]*/
239 static u8 flicker_jumps[2][2][4] =
240 { { { 76, 38, 19, 9 }, { 92, 46, 23, 11 } },
241 { { 64, 32, 16, 8 }, { 76, 38, 19, 9} }
242 };
243
244 struct cam_params {
245 struct {
246 u8 firmwareVersion;
247 u8 firmwareRevision;
248 u8 vcVersion;
249 u8 vcRevision;
250 } version;
251 struct {
252 u16 vendor;
253 u16 product;
254 u16 deviceRevision;
255 } pnpID;
256 struct {
257 u8 vpVersion;
258 u8 vpRevision;
259 u16 cameraHeadID;
260 } vpVersion;
261 struct {
262 u8 systemState;
263 u8 grabState;
264 u8 streamState;
265 u8 fatalError;
266 u8 cmdError;
267 u8 debugFlags;
268 u8 vpStatus;
269 u8 errorCode;
270 } status;
271 struct {
272 u8 brightness;
273 u8 contrast;
274 u8 saturation;
275 } colourParams;
276 struct {
277 u8 gainMode;
278 u8 expMode;
279 u8 compMode;
280 u8 centreWeight;
281 u8 gain;
282 u8 fineExp;
283 u8 coarseExpLo;
284 u8 coarseExpHi;
285 u8 redComp;
286 u8 green1Comp;
287 u8 green2Comp;
288 u8 blueComp;
289 } exposure;
290 struct {
291 u8 balanceMode;
292 u8 redGain;
293 u8 greenGain;
294 u8 blueGain;
295 } colourBalance;
296 struct {
297 u8 divisor;
298 u8 baserate;
299 } sensorFps;
300 struct {
301 u8 gain1;
302 u8 gain2;
303 u8 gain4;
304 u8 gain8;
305 } apcor;
306 struct {
307 u8 disabled;
308 u8 flickerMode;
309 u8 coarseJump;
310 u8 allowableOverExposure;
311 } flickerControl;
312 struct {
313 u8 gain1;
314 u8 gain2;
315 u8 gain4;
316 u8 gain8;
317 } vlOffset;
318 struct {
319 u8 mode;
320 u8 decimation;
321 } compression;
322 struct {
323 u8 frTargeting;
324 u8 targetFR;
325 u8 targetQ;
326 } compressionTarget;
327 struct {
328 u8 yThreshold;
329 u8 uvThreshold;
330 } yuvThreshold;
331 struct {
332 u8 hysteresis;
333 u8 threshMax;
334 u8 smallStep;
335 u8 largeStep;
336 u8 decimationHysteresis;
337 u8 frDiffStepThresh;
338 u8 qDiffStepThresh;
339 u8 decimationThreshMod;
340 } compressionParams;
341 struct {
342 u8 videoSize; /* CIF/QCIF */
343 u8 subSample;
344 u8 yuvOrder;
345 } format;
346 struct { /* Intel QX3 specific data */
347 u8 qx3_detected; /* a QX3 is present */
348 u8 toplight; /* top light lit , R/W */
349 u8 bottomlight; /* bottom light lit, R/W */
350 u8 button; /* snapshot button pressed (R/O) */
351 u8 cradled; /* microscope is in cradle (R/O) */
352 } qx3;
353 struct {
354 u8 colStart; /* skip first 8*colStart pixels */
355 u8 colEnd; /* finish at 8*colEnd pixels */
356 u8 rowStart; /* skip first 4*rowStart lines */
357 u8 rowEnd; /* finish at 4*rowEnd lines */
358 } roi;
359 u8 ecpTiming;
360 u8 streamStartLine;
361 };
362
363 /* specific webcam descriptor */
364 struct sd {
365 struct gspca_dev gspca_dev; /* !! must be the first item */
366 struct cam_params params; /* camera settings */
367
368 atomic_t cam_exposure;
369 atomic_t fps;
370 int exposure_count;
371 u8 exposure_status;
372 struct v4l2_ctrl *freq;
373 u8 mainsFreq; /* 0 = 50hz, 1 = 60hz */
374 u8 first_frame;
375 };
376
377 static const struct v4l2_pix_format mode[] = {
378 {160, 120, V4L2_PIX_FMT_CPIA1, V4L2_FIELD_NONE,
379 /* The sizeimage is trial and error, as with low framerates
380 the camera will pad out usb frames, making the image
381 data larger then strictly necessary */
382 .bytesperline = 160,
383 .sizeimage = 65536,
384 .colorspace = V4L2_COLORSPACE_SRGB,
385 .priv = 3},
386 {176, 144, V4L2_PIX_FMT_CPIA1, V4L2_FIELD_NONE,
387 .bytesperline = 172,
388 .sizeimage = 65536,
389 .colorspace = V4L2_COLORSPACE_SRGB,
390 .priv = 2},
391 {320, 240, V4L2_PIX_FMT_CPIA1, V4L2_FIELD_NONE,
392 .bytesperline = 320,
393 .sizeimage = 262144,
394 .colorspace = V4L2_COLORSPACE_SRGB,
395 .priv = 1},
396 {352, 288, V4L2_PIX_FMT_CPIA1, V4L2_FIELD_NONE,
397 .bytesperline = 352,
398 .sizeimage = 262144,
399 .colorspace = V4L2_COLORSPACE_SRGB,
400 .priv = 0},
401 };
402
403 /**********************************************************************
404 *
405 * General functions
406 *
407 **********************************************************************/
408
409 static int cpia_usb_transferCmd(struct gspca_dev *gspca_dev, u8 *command)
410 {
411 u8 requesttype;
412 unsigned int pipe;
413 int ret, databytes = command[6] | (command[7] << 8);
414 /* Sometimes we see spurious EPIPE errors */
415 int retries = 3;
416
417 if (command[0] == DATA_IN) {
418 pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
419 requesttype = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
420 } else if (command[0] == DATA_OUT) {
421 pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
422 requesttype = USB_TYPE_VENDOR | USB_RECIP_DEVICE;
423 } else {
424 PDEBUG(D_ERR, "Unexpected first byte of command: %x",
425 command[0]);
426 return -EINVAL;
427 }
428
429 retry:
430 ret = usb_control_msg(gspca_dev->dev, pipe,
431 command[1],
432 requesttype,
433 command[2] | (command[3] << 8),
434 command[4] | (command[5] << 8),
435 gspca_dev->usb_buf, databytes, 1000);
436
437 if (ret < 0)
438 pr_err("usb_control_msg %02x, error %d\n", command[1], ret);
439
440 if (ret == -EPIPE && retries > 0) {
441 retries--;
442 goto retry;
443 }
444
445 return (ret < 0) ? ret : 0;
446 }
447
448 /* send an arbitrary command to the camera */
449 static int do_command(struct gspca_dev *gspca_dev, u16 command,
450 u8 a, u8 b, u8 c, u8 d)
451 {
452 struct sd *sd = (struct sd *) gspca_dev;
453 int ret, datasize;
454 u8 cmd[8];
455
456 switch (command) {
457 case CPIA_COMMAND_GetCPIAVersion:
458 case CPIA_COMMAND_GetPnPID:
459 case CPIA_COMMAND_GetCameraStatus:
460 case CPIA_COMMAND_GetVPVersion:
461 case CPIA_COMMAND_GetColourParams:
462 case CPIA_COMMAND_GetColourBalance:
463 case CPIA_COMMAND_GetExposure:
464 datasize = 8;
465 break;
466 case CPIA_COMMAND_ReadMCPorts:
467 case CPIA_COMMAND_ReadVCRegs:
468 datasize = 4;
469 break;
470 default:
471 datasize = 0;
472 break;
473 }
474
475 cmd[0] = command >> 8;
476 cmd[1] = command & 0xff;
477 cmd[2] = a;
478 cmd[3] = b;
479 cmd[4] = c;
480 cmd[5] = d;
481 cmd[6] = datasize;
482 cmd[7] = 0;
483
484 ret = cpia_usb_transferCmd(gspca_dev, cmd);
485 if (ret)
486 return ret;
487
488 switch (command) {
489 case CPIA_COMMAND_GetCPIAVersion:
490 sd->params.version.firmwareVersion = gspca_dev->usb_buf[0];
491 sd->params.version.firmwareRevision = gspca_dev->usb_buf[1];
492 sd->params.version.vcVersion = gspca_dev->usb_buf[2];
493 sd->params.version.vcRevision = gspca_dev->usb_buf[3];
494 break;
495 case CPIA_COMMAND_GetPnPID:
496 sd->params.pnpID.vendor =
497 gspca_dev->usb_buf[0] | (gspca_dev->usb_buf[1] << 8);
498 sd->params.pnpID.product =
499 gspca_dev->usb_buf[2] | (gspca_dev->usb_buf[3] << 8);
500 sd->params.pnpID.deviceRevision =
501 gspca_dev->usb_buf[4] | (gspca_dev->usb_buf[5] << 8);
502 break;
503 case CPIA_COMMAND_GetCameraStatus:
504 sd->params.status.systemState = gspca_dev->usb_buf[0];
505 sd->params.status.grabState = gspca_dev->usb_buf[1];
506 sd->params.status.streamState = gspca_dev->usb_buf[2];
507 sd->params.status.fatalError = gspca_dev->usb_buf[3];
508 sd->params.status.cmdError = gspca_dev->usb_buf[4];
509 sd->params.status.debugFlags = gspca_dev->usb_buf[5];
510 sd->params.status.vpStatus = gspca_dev->usb_buf[6];
511 sd->params.status.errorCode = gspca_dev->usb_buf[7];
512 break;
513 case CPIA_COMMAND_GetVPVersion:
514 sd->params.vpVersion.vpVersion = gspca_dev->usb_buf[0];
515 sd->params.vpVersion.vpRevision = gspca_dev->usb_buf[1];
516 sd->params.vpVersion.cameraHeadID =
517 gspca_dev->usb_buf[2] | (gspca_dev->usb_buf[3] << 8);
518 break;
519 case CPIA_COMMAND_GetColourParams:
520 sd->params.colourParams.brightness = gspca_dev->usb_buf[0];
521 sd->params.colourParams.contrast = gspca_dev->usb_buf[1];
522 sd->params.colourParams.saturation = gspca_dev->usb_buf[2];
523 break;
524 case CPIA_COMMAND_GetColourBalance:
525 sd->params.colourBalance.redGain = gspca_dev->usb_buf[0];
526 sd->params.colourBalance.greenGain = gspca_dev->usb_buf[1];
527 sd->params.colourBalance.blueGain = gspca_dev->usb_buf[2];
528 break;
529 case CPIA_COMMAND_GetExposure:
530 sd->params.exposure.gain = gspca_dev->usb_buf[0];
531 sd->params.exposure.fineExp = gspca_dev->usb_buf[1];
532 sd->params.exposure.coarseExpLo = gspca_dev->usb_buf[2];
533 sd->params.exposure.coarseExpHi = gspca_dev->usb_buf[3];
534 sd->params.exposure.redComp = gspca_dev->usb_buf[4];
535 sd->params.exposure.green1Comp = gspca_dev->usb_buf[5];
536 sd->params.exposure.green2Comp = gspca_dev->usb_buf[6];
537 sd->params.exposure.blueComp = gspca_dev->usb_buf[7];
538 break;
539
540 case CPIA_COMMAND_ReadMCPorts:
541 /* test button press */
542 a = ((gspca_dev->usb_buf[1] & 0x02) == 0);
543 if (a != sd->params.qx3.button) {
544 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
545 input_report_key(gspca_dev->input_dev, KEY_CAMERA, a);
546 input_sync(gspca_dev->input_dev);
547 #endif
548 sd->params.qx3.button = a;
549 }
550 if (sd->params.qx3.button) {
551 /* button pressed - unlock the latch */
552 do_command(gspca_dev, CPIA_COMMAND_WriteMCPort,
553 3, 0xdf, 0xdf, 0);
554 do_command(gspca_dev, CPIA_COMMAND_WriteMCPort,
555 3, 0xff, 0xff, 0);
556 }
557
558 /* test whether microscope is cradled */
559 sd->params.qx3.cradled = ((gspca_dev->usb_buf[2] & 0x40) == 0);
560 break;
561 }
562
563 return 0;
564 }
565
566 /* send a command to the camera with an additional data transaction */
567 static int do_command_extended(struct gspca_dev *gspca_dev, u16 command,
568 u8 a, u8 b, u8 c, u8 d,
569 u8 e, u8 f, u8 g, u8 h,
570 u8 i, u8 j, u8 k, u8 l)
571 {
572 u8 cmd[8];
573
574 cmd[0] = command >> 8;
575 cmd[1] = command & 0xff;
576 cmd[2] = a;
577 cmd[3] = b;
578 cmd[4] = c;
579 cmd[5] = d;
580 cmd[6] = 8;
581 cmd[7] = 0;
582 gspca_dev->usb_buf[0] = e;
583 gspca_dev->usb_buf[1] = f;
584 gspca_dev->usb_buf[2] = g;
585 gspca_dev->usb_buf[3] = h;
586 gspca_dev->usb_buf[4] = i;
587 gspca_dev->usb_buf[5] = j;
588 gspca_dev->usb_buf[6] = k;
589 gspca_dev->usb_buf[7] = l;
590
591 return cpia_usb_transferCmd(gspca_dev, cmd);
592 }
593
594 /* find_over_exposure
595 * Finds a suitable value of OverExposure for use with SetFlickerCtrl
596 * Some calculation is required because this value changes with the brightness
597 * set with SetColourParameters
598 *
599 * Parameters: Brightness - last brightness value set with SetColourParameters
600 *
601 * Returns: OverExposure value to use with SetFlickerCtrl
602 */
603 #define FLICKER_MAX_EXPOSURE 250
604 #define FLICKER_ALLOWABLE_OVER_EXPOSURE 146
605 #define FLICKER_BRIGHTNESS_CONSTANT 59
606 static int find_over_exposure(int brightness)
607 {
608 int MaxAllowableOverExposure, OverExposure;
609
610 MaxAllowableOverExposure = FLICKER_MAX_EXPOSURE - brightness -
611 FLICKER_BRIGHTNESS_CONSTANT;
612
613 if (MaxAllowableOverExposure < FLICKER_ALLOWABLE_OVER_EXPOSURE)
614 OverExposure = MaxAllowableOverExposure;
615 else
616 OverExposure = FLICKER_ALLOWABLE_OVER_EXPOSURE;
617
618 return OverExposure;
619 }
620 #undef FLICKER_MAX_EXPOSURE
621 #undef FLICKER_ALLOWABLE_OVER_EXPOSURE
622 #undef FLICKER_BRIGHTNESS_CONSTANT
623
624 /* initialise cam_data structure */
625 static void reset_camera_params(struct gspca_dev *gspca_dev)
626 {
627 struct sd *sd = (struct sd *) gspca_dev;
628 struct cam_params *params = &sd->params;
629
630 /* The following parameter values are the defaults from
631 * "Software Developer's Guide for CPiA Cameras". Any changes
632 * to the defaults are noted in comments. */
633 params->colourParams.brightness = BRIGHTNESS_DEF;
634 params->colourParams.contrast = CONTRAST_DEF;
635 params->colourParams.saturation = SATURATION_DEF;
636 params->exposure.gainMode = 4;
637 params->exposure.expMode = 2; /* AEC */
638 params->exposure.compMode = 1;
639 params->exposure.centreWeight = 1;
640 params->exposure.gain = 0;
641 params->exposure.fineExp = 0;
642 params->exposure.coarseExpLo = 185;
643 params->exposure.coarseExpHi = 0;
644 params->exposure.redComp = COMP_RED;
645 params->exposure.green1Comp = COMP_GREEN1;
646 params->exposure.green2Comp = COMP_GREEN2;
647 params->exposure.blueComp = COMP_BLUE;
648 params->colourBalance.balanceMode = 2; /* ACB */
649 params->colourBalance.redGain = 32;
650 params->colourBalance.greenGain = 6;
651 params->colourBalance.blueGain = 92;
652 params->apcor.gain1 = 0x18;
653 params->apcor.gain2 = 0x16;
654 params->apcor.gain4 = 0x24;
655 params->apcor.gain8 = 0x34;
656 params->vlOffset.gain1 = 20;
657 params->vlOffset.gain2 = 24;
658 params->vlOffset.gain4 = 26;
659 params->vlOffset.gain8 = 26;
660 params->compressionParams.hysteresis = 3;
661 params->compressionParams.threshMax = 11;
662 params->compressionParams.smallStep = 1;
663 params->compressionParams.largeStep = 3;
664 params->compressionParams.decimationHysteresis = 2;
665 params->compressionParams.frDiffStepThresh = 5;
666 params->compressionParams.qDiffStepThresh = 3;
667 params->compressionParams.decimationThreshMod = 2;
668 /* End of default values from Software Developer's Guide */
669
670 /* Set Sensor FPS to 15fps. This seems better than 30fps
671 * for indoor lighting. */
672 params->sensorFps.divisor = 1;
673 params->sensorFps.baserate = 1;
674
675 params->flickerControl.flickerMode = 0;
676 params->flickerControl.disabled = 1;
677 params->flickerControl.coarseJump =
678 flicker_jumps[sd->mainsFreq]
679 [params->sensorFps.baserate]
680 [params->sensorFps.divisor];
681 params->flickerControl.allowableOverExposure =
682 find_over_exposure(params->colourParams.brightness);
683
684 params->yuvThreshold.yThreshold = 6; /* From windows driver */
685 params->yuvThreshold.uvThreshold = 6; /* From windows driver */
686
687 params->format.subSample = SUBSAMPLE_420;
688 params->format.yuvOrder = YUVORDER_YUYV;
689
690 params->compression.mode = CPIA_COMPRESSION_AUTO;
691 params->compression.decimation = NO_DECIMATION;
692
693 params->compressionTarget.frTargeting = COMP_TARGET_DEF;
694 params->compressionTarget.targetFR = 15; /* From windows driver */
695 params->compressionTarget.targetQ = 5; /* From windows driver */
696
697 params->qx3.qx3_detected = 0;
698 params->qx3.toplight = 0;
699 params->qx3.bottomlight = 0;
700 params->qx3.button = 0;
701 params->qx3.cradled = 0;
702 }
703
704 static void printstatus(struct cam_params *params)
705 {
706 PDEBUG(D_PROBE, "status: %02x %02x %02x %02x %02x %02x %02x %02x",
707 params->status.systemState, params->status.grabState,
708 params->status.streamState, params->status.fatalError,
709 params->status.cmdError, params->status.debugFlags,
710 params->status.vpStatus, params->status.errorCode);
711 }
712
713 static int goto_low_power(struct gspca_dev *gspca_dev)
714 {
715 struct sd *sd = (struct sd *) gspca_dev;
716 int ret;
717
718 ret = do_command(gspca_dev, CPIA_COMMAND_GotoLoPower, 0, 0, 0, 0);
719 if (ret)
720 return ret;
721
722 ret = do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0);
723 if (ret)
724 return ret;
725
726 if (sd->params.status.systemState != LO_POWER_STATE) {
727 if (sd->params.status.systemState != WARM_BOOT_STATE) {
728 PDEBUG(D_ERR,
729 "unexpected state after lo power cmd: %02x",
730 sd->params.status.systemState);
731 printstatus(&sd->params);
732 }
733 return -EIO;
734 }
735
736 PDEBUG(D_CONF, "camera now in LOW power state");
737 return 0;
738 }
739
740 static int goto_high_power(struct gspca_dev *gspca_dev)
741 {
742 struct sd *sd = (struct sd *) gspca_dev;
743 int ret;
744
745 ret = do_command(gspca_dev, CPIA_COMMAND_GotoHiPower, 0, 0, 0, 0);
746 if (ret)
747 return ret;
748
749 msleep_interruptible(40); /* windows driver does it too */
750
751 if (signal_pending(current))
752 return -EINTR;
753
754 do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0);
755 if (ret)
756 return ret;
757
758 if (sd->params.status.systemState != HI_POWER_STATE) {
759 PDEBUG(D_ERR, "unexpected state after hi power cmd: %02x",
760 sd->params.status.systemState);
761 printstatus(&sd->params);
762 return -EIO;
763 }
764
765 PDEBUG(D_CONF, "camera now in HIGH power state");
766 return 0;
767 }
768
769 static int get_version_information(struct gspca_dev *gspca_dev)
770 {
771 int ret;
772
773 /* GetCPIAVersion */
774 ret = do_command(gspca_dev, CPIA_COMMAND_GetCPIAVersion, 0, 0, 0, 0);
775 if (ret)
776 return ret;
777
778 /* GetPnPID */
779 return do_command(gspca_dev, CPIA_COMMAND_GetPnPID, 0, 0, 0, 0);
780 }
781
782 static int save_camera_state(struct gspca_dev *gspca_dev)
783 {
784 int ret;
785
786 ret = do_command(gspca_dev, CPIA_COMMAND_GetColourBalance, 0, 0, 0, 0);
787 if (ret)
788 return ret;
789
790 return do_command(gspca_dev, CPIA_COMMAND_GetExposure, 0, 0, 0, 0);
791 }
792
793 static int command_setformat(struct gspca_dev *gspca_dev)
794 {
795 struct sd *sd = (struct sd *) gspca_dev;
796 int ret;
797
798 ret = do_command(gspca_dev, CPIA_COMMAND_SetFormat,
799 sd->params.format.videoSize,
800 sd->params.format.subSample,
801 sd->params.format.yuvOrder, 0);
802 if (ret)
803 return ret;
804
805 return do_command(gspca_dev, CPIA_COMMAND_SetROI,
806 sd->params.roi.colStart, sd->params.roi.colEnd,
807 sd->params.roi.rowStart, sd->params.roi.rowEnd);
808 }
809
810 static int command_setcolourparams(struct gspca_dev *gspca_dev)
811 {
812 struct sd *sd = (struct sd *) gspca_dev;
813 return do_command(gspca_dev, CPIA_COMMAND_SetColourParams,
814 sd->params.colourParams.brightness,
815 sd->params.colourParams.contrast,
816 sd->params.colourParams.saturation, 0);
817 }
818
819 static int command_setapcor(struct gspca_dev *gspca_dev)
820 {
821 struct sd *sd = (struct sd *) gspca_dev;
822 return do_command(gspca_dev, CPIA_COMMAND_SetApcor,
823 sd->params.apcor.gain1,
824 sd->params.apcor.gain2,
825 sd->params.apcor.gain4,
826 sd->params.apcor.gain8);
827 }
828
829 static int command_setvloffset(struct gspca_dev *gspca_dev)
830 {
831 struct sd *sd = (struct sd *) gspca_dev;
832 return do_command(gspca_dev, CPIA_COMMAND_SetVLOffset,
833 sd->params.vlOffset.gain1,
834 sd->params.vlOffset.gain2,
835 sd->params.vlOffset.gain4,
836 sd->params.vlOffset.gain8);
837 }
838
839 static int command_setexposure(struct gspca_dev *gspca_dev)
840 {
841 struct sd *sd = (struct sd *) gspca_dev;
842 int ret;
843
844 ret = do_command_extended(gspca_dev, CPIA_COMMAND_SetExposure,
845 sd->params.exposure.gainMode,
846 1,
847 sd->params.exposure.compMode,
848 sd->params.exposure.centreWeight,
849 sd->params.exposure.gain,
850 sd->params.exposure.fineExp,
851 sd->params.exposure.coarseExpLo,
852 sd->params.exposure.coarseExpHi,
853 sd->params.exposure.redComp,
854 sd->params.exposure.green1Comp,
855 sd->params.exposure.green2Comp,
856 sd->params.exposure.blueComp);
857 if (ret)
858 return ret;
859
860 if (sd->params.exposure.expMode != 1) {
861 ret = do_command_extended(gspca_dev, CPIA_COMMAND_SetExposure,
862 0,
863 sd->params.exposure.expMode,
864 0, 0,
865 sd->params.exposure.gain,
866 sd->params.exposure.fineExp,
867 sd->params.exposure.coarseExpLo,
868 sd->params.exposure.coarseExpHi,
869 0, 0, 0, 0);
870 }
871
872 return ret;
873 }
874
875 static int command_setcolourbalance(struct gspca_dev *gspca_dev)
876 {
877 struct sd *sd = (struct sd *) gspca_dev;
878
879 if (sd->params.colourBalance.balanceMode == 1) {
880 int ret;
881
882 ret = do_command(gspca_dev, CPIA_COMMAND_SetColourBalance,
883 1,
884 sd->params.colourBalance.redGain,
885 sd->params.colourBalance.greenGain,
886 sd->params.colourBalance.blueGain);
887 if (ret)
888 return ret;
889
890 return do_command(gspca_dev, CPIA_COMMAND_SetColourBalance,
891 3, 0, 0, 0);
892 }
893 if (sd->params.colourBalance.balanceMode == 2) {
894 return do_command(gspca_dev, CPIA_COMMAND_SetColourBalance,
895 2, 0, 0, 0);
896 }
897 if (sd->params.colourBalance.balanceMode == 3) {
898 return do_command(gspca_dev, CPIA_COMMAND_SetColourBalance,
899 3, 0, 0, 0);
900 }
901
902 return -EINVAL;
903 }
904
905 static int command_setcompressiontarget(struct gspca_dev *gspca_dev)
906 {
907 struct sd *sd = (struct sd *) gspca_dev;
908
909 return do_command(gspca_dev, CPIA_COMMAND_SetCompressionTarget,
910 sd->params.compressionTarget.frTargeting,
911 sd->params.compressionTarget.targetFR,
912 sd->params.compressionTarget.targetQ, 0);
913 }
914
915 static int command_setyuvtresh(struct gspca_dev *gspca_dev)
916 {
917 struct sd *sd = (struct sd *) gspca_dev;
918
919 return do_command(gspca_dev, CPIA_COMMAND_SetYUVThresh,
920 sd->params.yuvThreshold.yThreshold,
921 sd->params.yuvThreshold.uvThreshold, 0, 0);
922 }
923
924 static int command_setcompressionparams(struct gspca_dev *gspca_dev)
925 {
926 struct sd *sd = (struct sd *) gspca_dev;
927
928 return do_command_extended(gspca_dev,
929 CPIA_COMMAND_SetCompressionParams,
930 0, 0, 0, 0,
931 sd->params.compressionParams.hysteresis,
932 sd->params.compressionParams.threshMax,
933 sd->params.compressionParams.smallStep,
934 sd->params.compressionParams.largeStep,
935 sd->params.compressionParams.decimationHysteresis,
936 sd->params.compressionParams.frDiffStepThresh,
937 sd->params.compressionParams.qDiffStepThresh,
938 sd->params.compressionParams.decimationThreshMod);
939 }
940
941 static int command_setcompression(struct gspca_dev *gspca_dev)
942 {
943 struct sd *sd = (struct sd *) gspca_dev;
944
945 return do_command(gspca_dev, CPIA_COMMAND_SetCompression,
946 sd->params.compression.mode,
947 sd->params.compression.decimation, 0, 0);
948 }
949
950 static int command_setsensorfps(struct gspca_dev *gspca_dev)
951 {
952 struct sd *sd = (struct sd *) gspca_dev;
953
954 return do_command(gspca_dev, CPIA_COMMAND_SetSensorFPS,
955 sd->params.sensorFps.divisor,
956 sd->params.sensorFps.baserate, 0, 0);
957 }
958
959 static int command_setflickerctrl(struct gspca_dev *gspca_dev)
960 {
961 struct sd *sd = (struct sd *) gspca_dev;
962
963 return do_command(gspca_dev, CPIA_COMMAND_SetFlickerCtrl,
964 sd->params.flickerControl.flickerMode,
965 sd->params.flickerControl.coarseJump,
966 sd->params.flickerControl.allowableOverExposure,
967 0);
968 }
969
970 static int command_setecptiming(struct gspca_dev *gspca_dev)
971 {
972 struct sd *sd = (struct sd *) gspca_dev;
973
974 return do_command(gspca_dev, CPIA_COMMAND_SetECPTiming,
975 sd->params.ecpTiming, 0, 0, 0);
976 }
977
978 static int command_pause(struct gspca_dev *gspca_dev)
979 {
980 return do_command(gspca_dev, CPIA_COMMAND_EndStreamCap, 0, 0, 0, 0);
981 }
982
983 static int command_resume(struct gspca_dev *gspca_dev)
984 {
985 struct sd *sd = (struct sd *) gspca_dev;
986
987 return do_command(gspca_dev, CPIA_COMMAND_InitStreamCap,
988 0, sd->params.streamStartLine, 0, 0);
989 }
990
991 static int command_setlights(struct gspca_dev *gspca_dev)
992 {
993 struct sd *sd = (struct sd *) gspca_dev;
994 int ret, p1, p2;
995
996 p1 = (sd->params.qx3.bottomlight == 0) << 1;
997 p2 = (sd->params.qx3.toplight == 0) << 3;
998
999 ret = do_command(gspca_dev, CPIA_COMMAND_WriteVCReg,
1000 0x90, 0x8f, 0x50, 0);
1001 if (ret)
1002 return ret;
1003
1004 return do_command(gspca_dev, CPIA_COMMAND_WriteMCPort, 2, 0,
1005 p1 | p2 | 0xe0, 0);
1006 }
1007
1008 static int set_flicker(struct gspca_dev *gspca_dev, int on, int apply)
1009 {
1010 /* Everything in here is from the Windows driver */
1011 /* define for compgain calculation */
1012 #if 0
1013 #define COMPGAIN(base, curexp, newexp) \
1014 (u8) ((((float) base - 128.0) * ((float) curexp / (float) newexp)) + 128.5)
1015 #define EXP_FROM_COMP(basecomp, curcomp, curexp) \
1016 (u16)((float)curexp * (float)(u8)(curcomp + 128) / \
1017 (float)(u8)(basecomp - 128))
1018 #else
1019 /* equivalent functions without floating point math */
1020 #define COMPGAIN(base, curexp, newexp) \
1021 (u8)(128 + (((u32)(2*(base-128)*curexp + newexp)) / (2 * newexp)))
1022 #define EXP_FROM_COMP(basecomp, curcomp, curexp) \
1023 (u16)(((u32)(curexp * (u8)(curcomp + 128)) / (u8)(basecomp - 128)))
1024 #endif
1025
1026 struct sd *sd = (struct sd *) gspca_dev;
1027 int currentexp = sd->params.exposure.coarseExpLo +
1028 sd->params.exposure.coarseExpHi * 256;
1029 int ret, startexp;
1030
1031 if (on) {
1032 int cj = sd->params.flickerControl.coarseJump;
1033 sd->params.flickerControl.flickerMode = 1;
1034 sd->params.flickerControl.disabled = 0;
1035 if (sd->params.exposure.expMode != 2) {
1036 sd->params.exposure.expMode = 2;
1037 sd->exposure_status = EXPOSURE_NORMAL;
1038 }
1039 currentexp = currentexp << sd->params.exposure.gain;
1040 sd->params.exposure.gain = 0;
1041 /* round down current exposure to nearest value */
1042 startexp = (currentexp + ROUND_UP_EXP_FOR_FLICKER) / cj;
1043 if (startexp < 1)
1044 startexp = 1;
1045 startexp = (startexp * cj) - 1;
1046 if (FIRMWARE_VERSION(1, 2))
1047 while (startexp > MAX_EXP_102)
1048 startexp -= cj;
1049 else
1050 while (startexp > MAX_EXP)
1051 startexp -= cj;
1052 sd->params.exposure.coarseExpLo = startexp & 0xff;
1053 sd->params.exposure.coarseExpHi = startexp >> 8;
1054 if (currentexp > startexp) {
1055 if (currentexp > (2 * startexp))
1056 currentexp = 2 * startexp;
1057 sd->params.exposure.redComp =
1058 COMPGAIN(COMP_RED, currentexp, startexp);
1059 sd->params.exposure.green1Comp =
1060 COMPGAIN(COMP_GREEN1, currentexp, startexp);
1061 sd->params.exposure.green2Comp =
1062 COMPGAIN(COMP_GREEN2, currentexp, startexp);
1063 sd->params.exposure.blueComp =
1064 COMPGAIN(COMP_BLUE, currentexp, startexp);
1065 } else {
1066 sd->params.exposure.redComp = COMP_RED;
1067 sd->params.exposure.green1Comp = COMP_GREEN1;
1068 sd->params.exposure.green2Comp = COMP_GREEN2;
1069 sd->params.exposure.blueComp = COMP_BLUE;
1070 }
1071 if (FIRMWARE_VERSION(1, 2))
1072 sd->params.exposure.compMode = 0;
1073 else
1074 sd->params.exposure.compMode = 1;
1075
1076 sd->params.apcor.gain1 = 0x18;
1077 sd->params.apcor.gain2 = 0x18;
1078 sd->params.apcor.gain4 = 0x16;
1079 sd->params.apcor.gain8 = 0x14;
1080 } else {
1081 sd->params.flickerControl.flickerMode = 0;
1082 sd->params.flickerControl.disabled = 1;
1083 /* Average equivalent coarse for each comp channel */
1084 startexp = EXP_FROM_COMP(COMP_RED,
1085 sd->params.exposure.redComp, currentexp);
1086 startexp += EXP_FROM_COMP(COMP_GREEN1,
1087 sd->params.exposure.green1Comp, currentexp);
1088 startexp += EXP_FROM_COMP(COMP_GREEN2,
1089 sd->params.exposure.green2Comp, currentexp);
1090 startexp += EXP_FROM_COMP(COMP_BLUE,
1091 sd->params.exposure.blueComp, currentexp);
1092 startexp = startexp >> 2;
1093 while (startexp > MAX_EXP && sd->params.exposure.gain <
1094 sd->params.exposure.gainMode - 1) {
1095 startexp = startexp >> 1;
1096 ++sd->params.exposure.gain;
1097 }
1098 if (FIRMWARE_VERSION(1, 2) && startexp > MAX_EXP_102)
1099 startexp = MAX_EXP_102;
1100 if (startexp > MAX_EXP)
1101 startexp = MAX_EXP;
1102 sd->params.exposure.coarseExpLo = startexp & 0xff;
1103 sd->params.exposure.coarseExpHi = startexp >> 8;
1104 sd->params.exposure.redComp = COMP_RED;
1105 sd->params.exposure.green1Comp = COMP_GREEN1;
1106 sd->params.exposure.green2Comp = COMP_GREEN2;
1107 sd->params.exposure.blueComp = COMP_BLUE;
1108 sd->params.exposure.compMode = 1;
1109 sd->params.apcor.gain1 = 0x18;
1110 sd->params.apcor.gain2 = 0x16;
1111 sd->params.apcor.gain4 = 0x24;
1112 sd->params.apcor.gain8 = 0x34;
1113 }
1114 sd->params.vlOffset.gain1 = 20;
1115 sd->params.vlOffset.gain2 = 24;
1116 sd->params.vlOffset.gain4 = 26;
1117 sd->params.vlOffset.gain8 = 26;
1118
1119 if (apply) {
1120 ret = command_setexposure(gspca_dev);
1121 if (ret)
1122 return ret;
1123
1124 ret = command_setapcor(gspca_dev);
1125 if (ret)
1126 return ret;
1127
1128 ret = command_setvloffset(gspca_dev);
1129 if (ret)
1130 return ret;
1131
1132 ret = command_setflickerctrl(gspca_dev);
1133 if (ret)
1134 return ret;
1135 }
1136
1137 return 0;
1138 #undef EXP_FROM_COMP
1139 #undef COMPGAIN
1140 }
1141
1142 /* monitor the exposure and adjust the sensor frame rate if needed */
1143 static void monitor_exposure(struct gspca_dev *gspca_dev)
1144 {
1145 struct sd *sd = (struct sd *) gspca_dev;
1146 u8 exp_acc, bcomp, cmd[8];
1147 int ret, light_exp, dark_exp, very_dark_exp;
1148 int old_exposure, new_exposure, framerate;
1149 int setfps = 0, setexp = 0, setflicker = 0;
1150
1151 /* get necessary stats and register settings from camera */
1152 /* do_command can't handle this, so do it ourselves */
1153 cmd[0] = CPIA_COMMAND_ReadVPRegs >> 8;
1154 cmd[1] = CPIA_COMMAND_ReadVPRegs & 0xff;
1155 cmd[2] = 30;
1156 cmd[3] = 4;
1157 cmd[4] = 9;
1158 cmd[5] = 8;
1159 cmd[6] = 8;
1160 cmd[7] = 0;
1161 ret = cpia_usb_transferCmd(gspca_dev, cmd);
1162 if (ret) {
1163 pr_err("ReadVPRegs(30,4,9,8) - failed: %d\n", ret);
1164 return;
1165 }
1166 exp_acc = gspca_dev->usb_buf[0];
1167 bcomp = gspca_dev->usb_buf[1];
1168
1169 light_exp = sd->params.colourParams.brightness +
1170 TC - 50 + EXP_ACC_LIGHT;
1171 if (light_exp > 255)
1172 light_exp = 255;
1173 dark_exp = sd->params.colourParams.brightness +
1174 TC - 50 - EXP_ACC_DARK;
1175 if (dark_exp < 0)
1176 dark_exp = 0;
1177 very_dark_exp = dark_exp / 2;
1178
1179 old_exposure = sd->params.exposure.coarseExpHi * 256 +
1180 sd->params.exposure.coarseExpLo;
1181
1182 if (!sd->params.flickerControl.disabled) {
1183 /* Flicker control on */
1184 int max_comp = FIRMWARE_VERSION(1, 2) ? MAX_COMP :
1185 HIGH_COMP_102;
1186 bcomp += 128; /* decode */
1187 if (bcomp >= max_comp && exp_acc < dark_exp) {
1188 /* dark */
1189 if (exp_acc < very_dark_exp) {
1190 /* very dark */
1191 if (sd->exposure_status == EXPOSURE_VERY_DARK)
1192 ++sd->exposure_count;
1193 else {
1194 sd->exposure_status =
1195 EXPOSURE_VERY_DARK;
1196 sd->exposure_count = 1;
1197 }
1198 } else {
1199 /* just dark */
1200 if (sd->exposure_status == EXPOSURE_DARK)
1201 ++sd->exposure_count;
1202 else {
1203 sd->exposure_status = EXPOSURE_DARK;
1204 sd->exposure_count = 1;
1205 }
1206 }
1207 } else if (old_exposure <= LOW_EXP || exp_acc > light_exp) {
1208 /* light */
1209 if (old_exposure <= VERY_LOW_EXP) {
1210 /* very light */
1211 if (sd->exposure_status == EXPOSURE_VERY_LIGHT)
1212 ++sd->exposure_count;
1213 else {
1214 sd->exposure_status =
1215 EXPOSURE_VERY_LIGHT;
1216 sd->exposure_count = 1;
1217 }
1218 } else {
1219 /* just light */
1220 if (sd->exposure_status == EXPOSURE_LIGHT)
1221 ++sd->exposure_count;
1222 else {
1223 sd->exposure_status = EXPOSURE_LIGHT;
1224 sd->exposure_count = 1;
1225 }
1226 }
1227 } else {
1228 /* not dark or light */
1229 sd->exposure_status = EXPOSURE_NORMAL;
1230 }
1231 } else {
1232 /* Flicker control off */
1233 if (old_exposure >= MAX_EXP && exp_acc < dark_exp) {
1234 /* dark */
1235 if (exp_acc < very_dark_exp) {
1236 /* very dark */
1237 if (sd->exposure_status == EXPOSURE_VERY_DARK)
1238 ++sd->exposure_count;
1239 else {
1240 sd->exposure_status =
1241 EXPOSURE_VERY_DARK;
1242 sd->exposure_count = 1;
1243 }
1244 } else {
1245 /* just dark */
1246 if (sd->exposure_status == EXPOSURE_DARK)
1247 ++sd->exposure_count;
1248 else {
1249 sd->exposure_status = EXPOSURE_DARK;
1250 sd->exposure_count = 1;
1251 }
1252 }
1253 } else if (old_exposure <= LOW_EXP || exp_acc > light_exp) {
1254 /* light */
1255 if (old_exposure <= VERY_LOW_EXP) {
1256 /* very light */
1257 if (sd->exposure_status == EXPOSURE_VERY_LIGHT)
1258 ++sd->exposure_count;
1259 else {
1260 sd->exposure_status =
1261 EXPOSURE_VERY_LIGHT;
1262 sd->exposure_count = 1;
1263 }
1264 } else {
1265 /* just light */
1266 if (sd->exposure_status == EXPOSURE_LIGHT)
1267 ++sd->exposure_count;
1268 else {
1269 sd->exposure_status = EXPOSURE_LIGHT;
1270 sd->exposure_count = 1;
1271 }
1272 }
1273 } else {
1274 /* not dark or light */
1275 sd->exposure_status = EXPOSURE_NORMAL;
1276 }
1277 }
1278
1279 framerate = atomic_read(&sd->fps);
1280 if (framerate > 30 || framerate < 1)
1281 framerate = 1;
1282
1283 if (!sd->params.flickerControl.disabled) {
1284 /* Flicker control on */
1285 if ((sd->exposure_status == EXPOSURE_VERY_DARK ||
1286 sd->exposure_status == EXPOSURE_DARK) &&
1287 sd->exposure_count >= DARK_TIME * framerate &&
1288 sd->params.sensorFps.divisor < 2) {
1289
1290 /* dark for too long */
1291 ++sd->params.sensorFps.divisor;
1292 setfps = 1;
1293
1294 sd->params.flickerControl.coarseJump =
1295 flicker_jumps[sd->mainsFreq]
1296 [sd->params.sensorFps.baserate]
1297 [sd->params.sensorFps.divisor];
1298 setflicker = 1;
1299
1300 new_exposure = sd->params.flickerControl.coarseJump-1;
1301 while (new_exposure < old_exposure / 2)
1302 new_exposure +=
1303 sd->params.flickerControl.coarseJump;
1304 sd->params.exposure.coarseExpLo = new_exposure & 0xff;
1305 sd->params.exposure.coarseExpHi = new_exposure >> 8;
1306 setexp = 1;
1307 sd->exposure_status = EXPOSURE_NORMAL;
1308 PDEBUG(D_CONF, "Automatically decreasing sensor_fps");
1309
1310 } else if ((sd->exposure_status == EXPOSURE_VERY_LIGHT ||
1311 sd->exposure_status == EXPOSURE_LIGHT) &&
1312 sd->exposure_count >= LIGHT_TIME * framerate &&
1313 sd->params.sensorFps.divisor > 0) {
1314
1315 /* light for too long */
1316 int max_exp = FIRMWARE_VERSION(1, 2) ? MAX_EXP_102 :
1317 MAX_EXP;
1318 --sd->params.sensorFps.divisor;
1319 setfps = 1;
1320
1321 sd->params.flickerControl.coarseJump =
1322 flicker_jumps[sd->mainsFreq]
1323 [sd->params.sensorFps.baserate]
1324 [sd->params.sensorFps.divisor];
1325 setflicker = 1;
1326
1327 new_exposure = sd->params.flickerControl.coarseJump-1;
1328 while (new_exposure < 2 * old_exposure &&
1329 new_exposure +
1330 sd->params.flickerControl.coarseJump < max_exp)
1331 new_exposure +=
1332 sd->params.flickerControl.coarseJump;
1333 sd->params.exposure.coarseExpLo = new_exposure & 0xff;
1334 sd->params.exposure.coarseExpHi = new_exposure >> 8;
1335 setexp = 1;
1336 sd->exposure_status = EXPOSURE_NORMAL;
1337 PDEBUG(D_CONF, "Automatically increasing sensor_fps");
1338 }
1339 } else {
1340 /* Flicker control off */
1341 if ((sd->exposure_status == EXPOSURE_VERY_DARK ||
1342 sd->exposure_status == EXPOSURE_DARK) &&
1343 sd->exposure_count >= DARK_TIME * framerate &&
1344 sd->params.sensorFps.divisor < 2) {
1345
1346 /* dark for too long */
1347 ++sd->params.sensorFps.divisor;
1348 setfps = 1;
1349
1350 if (sd->params.exposure.gain > 0) {
1351 --sd->params.exposure.gain;
1352 setexp = 1;
1353 }
1354 sd->exposure_status = EXPOSURE_NORMAL;
1355 PDEBUG(D_CONF, "Automatically decreasing sensor_fps");
1356
1357 } else if ((sd->exposure_status == EXPOSURE_VERY_LIGHT ||
1358 sd->exposure_status == EXPOSURE_LIGHT) &&
1359 sd->exposure_count >= LIGHT_TIME * framerate &&
1360 sd->params.sensorFps.divisor > 0) {
1361
1362 /* light for too long */
1363 --sd->params.sensorFps.divisor;
1364 setfps = 1;
1365
1366 if (sd->params.exposure.gain <
1367 sd->params.exposure.gainMode - 1) {
1368 ++sd->params.exposure.gain;
1369 setexp = 1;
1370 }
1371 sd->exposure_status = EXPOSURE_NORMAL;
1372 PDEBUG(D_CONF, "Automatically increasing sensor_fps");
1373 }
1374 }
1375
1376 if (setexp)
1377 command_setexposure(gspca_dev);
1378
1379 if (setfps)
1380 command_setsensorfps(gspca_dev);
1381
1382 if (setflicker)
1383 command_setflickerctrl(gspca_dev);
1384 }
1385
1386 /*-----------------------------------------------------------------*/
1387 /* if flicker is switched off, this function switches it back on.It checks,
1388 however, that conditions are suitable before restarting it.
1389 This should only be called for firmware version 1.2.
1390
1391 It also adjust the colour balance when an exposure step is detected - as
1392 long as flicker is running
1393 */
1394 static void restart_flicker(struct gspca_dev *gspca_dev)
1395 {
1396 struct sd *sd = (struct sd *) gspca_dev;
1397 int cam_exposure, old_exp;
1398
1399 if (!FIRMWARE_VERSION(1, 2))
1400 return;
1401
1402 cam_exposure = atomic_read(&sd->cam_exposure);
1403
1404 if (sd->params.flickerControl.flickerMode == 0 ||
1405 cam_exposure == 0)
1406 return;
1407
1408 old_exp = sd->params.exposure.coarseExpLo +
1409 sd->params.exposure.coarseExpHi*256;
1410 /*
1411 see how far away camera exposure is from a valid
1412 flicker exposure value
1413 */
1414 cam_exposure %= sd->params.flickerControl.coarseJump;
1415 if (!sd->params.flickerControl.disabled &&
1416 cam_exposure <= sd->params.flickerControl.coarseJump - 3) {
1417 /* Flicker control auto-disabled */
1418 sd->params.flickerControl.disabled = 1;
1419 }
1420
1421 if (sd->params.flickerControl.disabled &&
1422 old_exp > sd->params.flickerControl.coarseJump +
1423 ROUND_UP_EXP_FOR_FLICKER) {
1424 /* exposure is now high enough to switch
1425 flicker control back on */
1426 set_flicker(gspca_dev, 1, 1);
1427 }
1428 }
1429
1430 /* this function is called at probe time */
1431 static int sd_config(struct gspca_dev *gspca_dev,
1432 const struct usb_device_id *id)
1433 {
1434 struct sd *sd = (struct sd *) gspca_dev;
1435 struct cam *cam;
1436
1437 sd->mainsFreq = FREQ_DEF == V4L2_CID_POWER_LINE_FREQUENCY_60HZ;
1438 reset_camera_params(gspca_dev);
1439
1440 PDEBUG(D_PROBE, "cpia CPiA camera detected (vid/pid 0x%04X:0x%04X)",
1441 id->idVendor, id->idProduct);
1442
1443 cam = &gspca_dev->cam;
1444 cam->cam_mode = mode;
1445 cam->nmodes = ARRAY_SIZE(mode);
1446
1447 goto_low_power(gspca_dev);
1448 /* Check the firmware version. */
1449 sd->params.version.firmwareVersion = 0;
1450 get_version_information(gspca_dev);
1451 if (sd->params.version.firmwareVersion != 1) {
1452 PDEBUG(D_ERR, "only firmware version 1 is supported (got: %d)",
1453 sd->params.version.firmwareVersion);
1454 return -ENODEV;
1455 }
1456
1457 /* A bug in firmware 1-02 limits gainMode to 2 */
1458 if (sd->params.version.firmwareRevision <= 2 &&
1459 sd->params.exposure.gainMode > 2) {
1460 sd->params.exposure.gainMode = 2;
1461 }
1462
1463 /* set QX3 detected flag */
1464 sd->params.qx3.qx3_detected = (sd->params.pnpID.vendor == 0x0813 &&
1465 sd->params.pnpID.product == 0x0001);
1466 return 0;
1467 }
1468
1469 /* -- start the camera -- */
1470 static int sd_start(struct gspca_dev *gspca_dev)
1471 {
1472 struct sd *sd = (struct sd *) gspca_dev;
1473 int priv, ret;
1474
1475 /* Start the camera in low power mode */
1476 if (goto_low_power(gspca_dev)) {
1477 if (sd->params.status.systemState != WARM_BOOT_STATE) {
1478 PDEBUG(D_ERR, "unexpected systemstate: %02x",
1479 sd->params.status.systemState);
1480 printstatus(&sd->params);
1481 return -ENODEV;
1482 }
1483
1484 /* FIXME: this is just dirty trial and error */
1485 ret = goto_high_power(gspca_dev);
1486 if (ret)
1487 return ret;
1488
1489 ret = do_command(gspca_dev, CPIA_COMMAND_DiscardFrame,
1490 0, 0, 0, 0);
1491 if (ret)
1492 return ret;
1493
1494 ret = goto_low_power(gspca_dev);
1495 if (ret)
1496 return ret;
1497 }
1498
1499 /* procedure described in developer's guide p3-28 */
1500
1501 /* Check the firmware version. */
1502 sd->params.version.firmwareVersion = 0;
1503 get_version_information(gspca_dev);
1504
1505 /* The fatal error checking should be done after
1506 * the camera powers up (developer's guide p 3-38) */
1507
1508 /* Set streamState before transition to high power to avoid bug
1509 * in firmware 1-02 */
1510 ret = do_command(gspca_dev, CPIA_COMMAND_ModifyCameraStatus,
1511 STREAMSTATE, 0, STREAM_NOT_READY, 0);
1512 if (ret)
1513 return ret;
1514
1515 /* GotoHiPower */
1516 ret = goto_high_power(gspca_dev);
1517 if (ret)
1518 return ret;
1519
1520 /* Check the camera status */
1521 ret = do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0);
1522 if (ret)
1523 return ret;
1524
1525 if (sd->params.status.fatalError) {
1526 PDEBUG(D_ERR, "fatal_error: %04x, vp_status: %04x",
1527 sd->params.status.fatalError,
1528 sd->params.status.vpStatus);
1529 return -EIO;
1530 }
1531
1532 /* VPVersion can't be retrieved before the camera is in HiPower,
1533 * so get it here instead of in get_version_information. */
1534 ret = do_command(gspca_dev, CPIA_COMMAND_GetVPVersion, 0, 0, 0, 0);
1535 if (ret)
1536 return ret;
1537
1538 /* Determine video mode settings */
1539 sd->params.streamStartLine = 120;
1540
1541 priv = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
1542 if (priv & 0x01) { /* crop */
1543 sd->params.roi.colStart = 2;
1544 sd->params.roi.rowStart = 6;
1545 } else {
1546 sd->params.roi.colStart = 0;
1547 sd->params.roi.rowStart = 0;
1548 }
1549
1550 if (priv & 0x02) { /* quarter */
1551 sd->params.format.videoSize = VIDEOSIZE_QCIF;
1552 sd->params.roi.colStart /= 2;
1553 sd->params.roi.rowStart /= 2;
1554 sd->params.streamStartLine /= 2;
1555 } else
1556 sd->params.format.videoSize = VIDEOSIZE_CIF;
1557
1558 sd->params.roi.colEnd = sd->params.roi.colStart +
1559 (gspca_dev->width >> 3);
1560 sd->params.roi.rowEnd = sd->params.roi.rowStart +
1561 (gspca_dev->height >> 2);
1562
1563 /* And now set the camera to a known state */
1564 ret = do_command(gspca_dev, CPIA_COMMAND_SetGrabMode,
1565 CPIA_GRAB_CONTINEOUS, 0, 0, 0);
1566 if (ret)
1567 return ret;
1568 /* We start with compression disabled, as we need one uncompressed
1569 frame to handle later compressed frames */
1570 ret = do_command(gspca_dev, CPIA_COMMAND_SetCompression,
1571 CPIA_COMPRESSION_NONE,
1572 NO_DECIMATION, 0, 0);
1573 if (ret)
1574 return ret;
1575 ret = command_setcompressiontarget(gspca_dev);
1576 if (ret)
1577 return ret;
1578 ret = command_setcolourparams(gspca_dev);
1579 if (ret)
1580 return ret;
1581 ret = command_setformat(gspca_dev);
1582 if (ret)
1583 return ret;
1584 ret = command_setyuvtresh(gspca_dev);
1585 if (ret)
1586 return ret;
1587 ret = command_setecptiming(gspca_dev);
1588 if (ret)
1589 return ret;
1590 ret = command_setcompressionparams(gspca_dev);
1591 if (ret)
1592 return ret;
1593 ret = command_setexposure(gspca_dev);
1594 if (ret)
1595 return ret;
1596 ret = command_setcolourbalance(gspca_dev);
1597 if (ret)
1598 return ret;
1599 ret = command_setsensorfps(gspca_dev);
1600 if (ret)
1601 return ret;
1602 ret = command_setapcor(gspca_dev);
1603 if (ret)
1604 return ret;
1605 ret = command_setflickerctrl(gspca_dev);
1606 if (ret)
1607 return ret;
1608 ret = command_setvloffset(gspca_dev);
1609 if (ret)
1610 return ret;
1611
1612 /* Start stream */
1613 ret = command_resume(gspca_dev);
1614 if (ret)
1615 return ret;
1616
1617 /* Wait 6 frames before turning compression on for the sensor to get
1618 all settings and AEC/ACB to settle */
1619 sd->first_frame = 6;
1620 sd->exposure_status = EXPOSURE_NORMAL;
1621 sd->exposure_count = 0;
1622 atomic_set(&sd->cam_exposure, 0);
1623 atomic_set(&sd->fps, 0);
1624
1625 return 0;
1626 }
1627
1628 static void sd_stopN(struct gspca_dev *gspca_dev)
1629 {
1630 struct sd *sd = (struct sd *) gspca_dev;
1631
1632 command_pause(gspca_dev);
1633
1634 /* save camera state for later open (developers guide ch 3.5.3) */
1635 save_camera_state(gspca_dev);
1636
1637 /* GotoLoPower */
1638 goto_low_power(gspca_dev);
1639
1640 /* Update the camera status */
1641 do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0);
1642
1643 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
1644 /* If the last button state is pressed, release it now! */
1645 if (sd->params.qx3.button) {
1646 /* The camera latch will hold the pressed state until we reset
1647 the latch, so we do not reset sd->params.qx3.button now, to
1648 avoid a false keypress being reported the next sd_start */
1649 input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
1650 input_sync(gspca_dev->input_dev);
1651 }
1652 #endif
1653 }
1654
1655 /* this function is called at probe and resume time */
1656 static int sd_init(struct gspca_dev *gspca_dev)
1657 {
1658 struct sd *sd = (struct sd *) gspca_dev;
1659 int ret;
1660
1661 /* Start / Stop the camera to make sure we are talking to
1662 a supported camera, and to get some information from it
1663 to print. */
1664 ret = sd_start(gspca_dev);
1665 if (ret)
1666 return ret;
1667
1668 /* Ensure the QX3 illuminators' states are restored upon resume,
1669 or disable the illuminator controls, if this isn't a QX3 */
1670 if (sd->params.qx3.qx3_detected)
1671 command_setlights(gspca_dev);
1672
1673 sd_stopN(gspca_dev);
1674
1675 PDEBUG(D_PROBE, "CPIA Version: %d.%02d (%d.%d)",
1676 sd->params.version.firmwareVersion,
1677 sd->params.version.firmwareRevision,
1678 sd->params.version.vcVersion,
1679 sd->params.version.vcRevision);
1680 PDEBUG(D_PROBE, "CPIA PnP-ID: %04x:%04x:%04x",
1681 sd->params.pnpID.vendor, sd->params.pnpID.product,
1682 sd->params.pnpID.deviceRevision);
1683 PDEBUG(D_PROBE, "VP-Version: %d.%d %04x",
1684 sd->params.vpVersion.vpVersion,
1685 sd->params.vpVersion.vpRevision,
1686 sd->params.vpVersion.cameraHeadID);
1687
1688 return 0;
1689 }
1690
1691 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
1692 u8 *data,
1693 int len)
1694 {
1695 struct sd *sd = (struct sd *) gspca_dev;
1696
1697 /* Check for SOF */
1698 if (len >= 64 &&
1699 data[0] == MAGIC_0 && data[1] == MAGIC_1 &&
1700 data[16] == sd->params.format.videoSize &&
1701 data[17] == sd->params.format.subSample &&
1702 data[18] == sd->params.format.yuvOrder &&
1703 data[24] == sd->params.roi.colStart &&
1704 data[25] == sd->params.roi.colEnd &&
1705 data[26] == sd->params.roi.rowStart &&
1706 data[27] == sd->params.roi.rowEnd) {
1707 u8 *image;
1708
1709 atomic_set(&sd->cam_exposure, data[39] * 2);
1710 atomic_set(&sd->fps, data[41]);
1711
1712 /* Check for proper EOF for last frame */
1713 image = gspca_dev->image;
1714 if (image != NULL &&
1715 gspca_dev->image_len > 4 &&
1716 image[gspca_dev->image_len - 4] == 0xff &&
1717 image[gspca_dev->image_len - 3] == 0xff &&
1718 image[gspca_dev->image_len - 2] == 0xff &&
1719 image[gspca_dev->image_len - 1] == 0xff)
1720 gspca_frame_add(gspca_dev, LAST_PACKET,
1721 NULL, 0);
1722
1723 gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
1724 return;
1725 }
1726
1727 gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
1728 }
1729
1730 static void sd_dq_callback(struct gspca_dev *gspca_dev)
1731 {
1732 struct sd *sd = (struct sd *) gspca_dev;
1733
1734 /* Set the normal compression settings once we have captured a
1735 few uncompressed frames (and AEC has hopefully settled) */
1736 if (sd->first_frame) {
1737 sd->first_frame--;
1738 if (sd->first_frame == 0)
1739 command_setcompression(gspca_dev);
1740 }
1741
1742 /* Switch flicker control back on if it got turned off */
1743 restart_flicker(gspca_dev);
1744
1745 /* If AEC is enabled, monitor the exposure and
1746 adjust the sensor frame rate if needed */
1747 if (sd->params.exposure.expMode == 2)
1748 monitor_exposure(gspca_dev);
1749
1750 /* Update our knowledge of the camera state */
1751 do_command(gspca_dev, CPIA_COMMAND_GetExposure, 0, 0, 0, 0);
1752 do_command(gspca_dev, CPIA_COMMAND_ReadMCPorts, 0, 0, 0, 0);
1753 }
1754
1755 static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
1756 {
1757 struct gspca_dev *gspca_dev =
1758 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
1759 struct sd *sd = (struct sd *)gspca_dev;
1760
1761 gspca_dev->usb_err = 0;
1762
1763 if (!gspca_dev->streaming && ctrl->id != V4L2_CID_POWER_LINE_FREQUENCY)
1764 return 0;
1765
1766 switch (ctrl->id) {
1767 case V4L2_CID_BRIGHTNESS:
1768 sd->params.colourParams.brightness = ctrl->val;
1769 sd->params.flickerControl.allowableOverExposure =
1770 find_over_exposure(sd->params.colourParams.brightness);
1771 gspca_dev->usb_err = command_setcolourparams(gspca_dev);
1772 if (!gspca_dev->usb_err)
1773 gspca_dev->usb_err = command_setflickerctrl(gspca_dev);
1774 break;
1775 case V4L2_CID_CONTRAST:
1776 sd->params.colourParams.contrast = ctrl->val;
1777 gspca_dev->usb_err = command_setcolourparams(gspca_dev);
1778 break;
1779 case V4L2_CID_SATURATION:
1780 sd->params.colourParams.saturation = ctrl->val;
1781 gspca_dev->usb_err = command_setcolourparams(gspca_dev);
1782 break;
1783 case V4L2_CID_POWER_LINE_FREQUENCY:
1784 sd->mainsFreq = ctrl->val == V4L2_CID_POWER_LINE_FREQUENCY_60HZ;
1785 sd->params.flickerControl.coarseJump =
1786 flicker_jumps[sd->mainsFreq]
1787 [sd->params.sensorFps.baserate]
1788 [sd->params.sensorFps.divisor];
1789
1790 gspca_dev->usb_err = set_flicker(gspca_dev,
1791 ctrl->val != V4L2_CID_POWER_LINE_FREQUENCY_DISABLED,
1792 gspca_dev->streaming);
1793 break;
1794 case V4L2_CID_ILLUMINATORS_1:
1795 sd->params.qx3.bottomlight = ctrl->val;
1796 gspca_dev->usb_err = command_setlights(gspca_dev);
1797 break;
1798 case V4L2_CID_ILLUMINATORS_2:
1799 sd->params.qx3.toplight = ctrl->val;
1800 gspca_dev->usb_err = command_setlights(gspca_dev);
1801 break;
1802 case CPIA1_CID_COMP_TARGET:
1803 sd->params.compressionTarget.frTargeting = ctrl->val;
1804 gspca_dev->usb_err = command_setcompressiontarget(gspca_dev);
1805 break;
1806 }
1807 return gspca_dev->usb_err;
1808 }
1809
1810 static const struct v4l2_ctrl_ops sd_ctrl_ops = {
1811 .s_ctrl = sd_s_ctrl,
1812 };
1813
1814 static int sd_init_controls(struct gspca_dev *gspca_dev)
1815 {
1816 struct sd *sd = (struct sd *)gspca_dev;
1817 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
1818 static const char * const comp_target_menu[] = {
1819 "Quality",
1820 "Framerate",
1821 NULL
1822 };
1823 static const struct v4l2_ctrl_config comp_target = {
1824 .ops = &sd_ctrl_ops,
1825 .id = CPIA1_CID_COMP_TARGET,
1826 .type = V4L2_CTRL_TYPE_MENU,
1827 .name = "Compression Target",
1828 .qmenu = comp_target_menu,
1829 .max = 1,
1830 .def = COMP_TARGET_DEF,
1831 };
1832
1833 gspca_dev->vdev.ctrl_handler = hdl;
1834 v4l2_ctrl_handler_init(hdl, 7);
1835 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
1836 V4L2_CID_BRIGHTNESS, 0, 100, 1, BRIGHTNESS_DEF);
1837 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
1838 V4L2_CID_CONTRAST, 0, 96, 8, CONTRAST_DEF);
1839 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
1840 V4L2_CID_SATURATION, 0, 100, 1, SATURATION_DEF);
1841 sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
1842 V4L2_CID_POWER_LINE_FREQUENCY,
1843 V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0,
1844 FREQ_DEF);
1845 if (sd->params.qx3.qx3_detected) {
1846 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
1847 V4L2_CID_ILLUMINATORS_1, 0, 1, 1,
1848 ILLUMINATORS_1_DEF);
1849 v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
1850 V4L2_CID_ILLUMINATORS_2, 0, 1, 1,
1851 ILLUMINATORS_2_DEF);
1852 }
1853 v4l2_ctrl_new_custom(hdl, &comp_target, NULL);
1854
1855 if (hdl->error) {
1856 pr_err("Could not initialize controls\n");
1857 return hdl->error;
1858 }
1859 return 0;
1860 }
1861
1862 /* sub-driver description */
1863 static const struct sd_desc sd_desc = {
1864 .name = MODULE_NAME,
1865 .config = sd_config,
1866 .init = sd_init,
1867 .init_controls = sd_init_controls,
1868 .start = sd_start,
1869 .stopN = sd_stopN,
1870 .dq_callback = sd_dq_callback,
1871 .pkt_scan = sd_pkt_scan,
1872 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
1873 .other_input = 1,
1874 #endif
1875 };
1876
1877 /* -- module initialisation -- */
1878 static const struct usb_device_id device_table[] = {
1879 {USB_DEVICE(0x0553, 0x0002)},
1880 {USB_DEVICE(0x0813, 0x0001)},
1881 {}
1882 };
1883 MODULE_DEVICE_TABLE(usb, device_table);
1884
1885 /* -- device connect -- */
1886 static int sd_probe(struct usb_interface *intf,
1887 const struct usb_device_id *id)
1888 {
1889 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
1890 THIS_MODULE);
1891 }
1892
1893 static struct usb_driver sd_driver = {
1894 .name = MODULE_NAME,
1895 .id_table = device_table,
1896 .probe = sd_probe,
1897 .disconnect = gspca_disconnect,
1898 #ifdef CONFIG_PM
1899 .suspend = gspca_suspend,
1900 .resume = gspca_resume,
1901 .reset_resume = gspca_resume,
1902 #endif
1903 };
1904
1905 module_usb_driver(sd_driver);
Linux ARM platform port for MOXA ART SoC