1 /*
2 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
3 * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
4 * Copyright (c) 2002, 2003 Tuukka Toivonen
5 * Copyright (c) 2008 Erik Andrén
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * P/N 861037: Sensor HDCS1000 ASIC STV0600
22 * P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
23 * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
24 * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
25 * P/N 861075-0040: Sensor HDCS1000 ASIC
26 * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
27 * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
28 */
29
30 /*
31 * The spec file for the PB-0100 suggests the following for best quality
32 * images after the sensor has been reset :
33 *
34 * PB_ADCGAINL = R60 = 0x03 (3 dec) : sets low reference of ADC
35 to produce good black level
36 * PB_PREADCTRL = R32 = 0x1400 (5120 dec) : Enables global gain changes
37 through R53
38 * PB_ADCMINGAIN = R52 = 0x10 (16 dec) : Sets the minimum gain for
39 auto-exposure
40 * PB_ADCGLOBALGAIN = R53 = 0x10 (16 dec) : Sets the global gain
41 * PB_EXPGAIN = R14 = 0x11 (17 dec) : Sets the auto-exposure value
42 * PB_UPDATEINT = R23 = 0x02 (2 dec) : Sets the speed on
43 auto-exposure routine
44 * PB_CFILLIN = R5 = 0x0E (14 dec) : Sets the frame rate
45 */
46
47 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
48
49 #include "stv06xx_pb0100.h"
50
51 struct pb0100_ctrls {
52 struct { /* one big happy control cluster... */
53 struct v4l2_ctrl *autogain;
54 struct v4l2_ctrl *gain;
55 struct v4l2_ctrl *exposure;
56 struct v4l2_ctrl *red;
57 struct v4l2_ctrl *blue;
58 struct v4l2_ctrl *natural;
59 };
60 struct v4l2_ctrl *target;
61 };
62
63 static struct v4l2_pix_format pb0100_mode[] = {
64 /* low res / subsample modes disabled as they are only half res horizontal,
65 halving the vertical resolution does not seem to work */
66 {
67 320,
68 240,
69 V4L2_PIX_FMT_SGRBG8,
70 V4L2_FIELD_NONE,
71 .sizeimage = 320 * 240,
72 .bytesperline = 320,
73 .colorspace = V4L2_COLORSPACE_SRGB,
74 .priv = PB0100_CROP_TO_VGA
75 },
76 {
77 352,
78 288,
79 V4L2_PIX_FMT_SGRBG8,
80 V4L2_FIELD_NONE,
81 .sizeimage = 352 * 288,
82 .bytesperline = 352,
83 .colorspace = V4L2_COLORSPACE_SRGB,
84 .priv = 0
85 }
86 };
87
pb0100_s_ctrl(struct v4l2_ctrl * ctrl)88 static int pb0100_s_ctrl(struct v4l2_ctrl *ctrl)
89 {
90 struct gspca_dev *gspca_dev =
91 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
92 struct sd *sd = (struct sd *)gspca_dev;
93 struct pb0100_ctrls *ctrls = sd->sensor_priv;
94 int err = -EINVAL;
95
96 switch (ctrl->id) {
97 case V4L2_CID_AUTOGAIN:
98 err = pb0100_set_autogain(gspca_dev, ctrl->val);
99 if (err)
100 break;
101 if (ctrl->val)
102 break;
103 err = pb0100_set_gain(gspca_dev, ctrls->gain->val);
104 if (err)
105 break;
106 err = pb0100_set_exposure(gspca_dev, ctrls->exposure->val);
107 break;
108 case V4L2_CTRL_CLASS_USER + 0x1001:
109 err = pb0100_set_autogain_target(gspca_dev, ctrl->val);
110 break;
111 }
112 return err;
113 }
114
115 static const struct v4l2_ctrl_ops pb0100_ctrl_ops = {
116 .s_ctrl = pb0100_s_ctrl,
117 };
118
pb0100_init_controls(struct sd * sd)119 static int pb0100_init_controls(struct sd *sd)
120 {
121 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
122 struct pb0100_ctrls *ctrls;
123 static const struct v4l2_ctrl_config autogain_target = {
124 .ops = &pb0100_ctrl_ops,
125 .id = V4L2_CTRL_CLASS_USER + 0x1000,
126 .type = V4L2_CTRL_TYPE_INTEGER,
127 .name = "Automatic Gain Target",
128 .max = 255,
129 .step = 1,
130 .def = 128,
131 };
132 static const struct v4l2_ctrl_config natural_light = {
133 .ops = &pb0100_ctrl_ops,
134 .id = V4L2_CTRL_CLASS_USER + 0x1001,
135 .type = V4L2_CTRL_TYPE_BOOLEAN,
136 .name = "Natural Light Source",
137 .max = 1,
138 .step = 1,
139 .def = 1,
140 };
141
142 ctrls = kzalloc(sizeof(*ctrls), GFP_KERNEL);
143 if (!ctrls)
144 return -ENOMEM;
145
146 v4l2_ctrl_handler_init(hdl, 6);
147 ctrls->autogain = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops,
148 V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
149 ctrls->exposure = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops,
150 V4L2_CID_EXPOSURE, 0, 511, 1, 12);
151 ctrls->gain = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops,
152 V4L2_CID_GAIN, 0, 255, 1, 128);
153 ctrls->red = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops,
154 V4L2_CID_RED_BALANCE, -255, 255, 1, 0);
155 ctrls->blue = v4l2_ctrl_new_std(hdl, &pb0100_ctrl_ops,
156 V4L2_CID_BLUE_BALANCE, -255, 255, 1, 0);
157 ctrls->natural = v4l2_ctrl_new_custom(hdl, &natural_light, NULL);
158 ctrls->target = v4l2_ctrl_new_custom(hdl, &autogain_target, NULL);
159 if (hdl->error) {
160 kfree(ctrls);
161 return hdl->error;
162 }
163 sd->sensor_priv = ctrls;
164 v4l2_ctrl_auto_cluster(5, &ctrls->autogain, 0, false);
165 return 0;
166 }
167
pb0100_probe(struct sd * sd)168 static int pb0100_probe(struct sd *sd)
169 {
170 u16 sensor;
171 int err;
172
173 err = stv06xx_read_sensor(sd, PB_IDENT, &sensor);
174
175 if (err < 0)
176 return -ENODEV;
177 if ((sensor >> 8) != 0x64)
178 return -ENODEV;
179
180 pr_info("Photobit pb0100 sensor detected\n");
181
182 sd->gspca_dev.cam.cam_mode = pb0100_mode;
183 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(pb0100_mode);
184
185 return 0;
186 }
187
pb0100_start(struct sd * sd)188 static int pb0100_start(struct sd *sd)
189 {
190 int err, packet_size, max_packet_size;
191 struct usb_host_interface *alt;
192 struct usb_interface *intf;
193 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
194 struct cam *cam = &sd->gspca_dev.cam;
195 u32 mode = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
196
197 intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
198 alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
199 if (!alt)
200 return -ENODEV;
201 packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
202
203 /* If we don't have enough bandwidth use a lower framerate */
204 max_packet_size = sd->sensor->max_packet_size[sd->gspca_dev.curr_mode];
205 if (packet_size < max_packet_size)
206 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1));
207 else
208 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(5)|BIT(3)|BIT(1));
209
210 /* Setup sensor window */
211 if (mode & PB0100_CROP_TO_VGA) {
212 stv06xx_write_sensor(sd, PB_RSTART, 30);
213 stv06xx_write_sensor(sd, PB_CSTART, 20);
214 stv06xx_write_sensor(sd, PB_RWSIZE, 240 - 1);
215 stv06xx_write_sensor(sd, PB_CWSIZE, 320 - 1);
216 } else {
217 stv06xx_write_sensor(sd, PB_RSTART, 8);
218 stv06xx_write_sensor(sd, PB_CSTART, 4);
219 stv06xx_write_sensor(sd, PB_RWSIZE, 288 - 1);
220 stv06xx_write_sensor(sd, PB_CWSIZE, 352 - 1);
221 }
222
223 if (mode & PB0100_SUBSAMPLE) {
224 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02); /* Wrong, FIXME */
225 stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);
226
227 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
228 } else {
229 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
230 stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
231 /* larger -> slower */
232 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x20);
233 }
234
235 err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3)|BIT(1));
236 PDEBUG(D_STREAM, "Started stream, status: %d", err);
237
238 return (err < 0) ? err : 0;
239 }
240
pb0100_stop(struct sd * sd)241 static int pb0100_stop(struct sd *sd)
242 {
243 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
244 int err;
245
246 err = stv06xx_write_sensor(sd, PB_ABORTFRAME, 1);
247
248 if (err < 0)
249 goto out;
250
251 /* Set bit 1 to zero */
252 err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3));
253
254 PDEBUG(D_STREAM, "Halting stream");
255 out:
256 return (err < 0) ? err : 0;
257 }
258
259 /* FIXME: Sort the init commands out and put them into tables,
260 this is only for getting the camera to work */
261 /* FIXME: No error handling for now,
262 add this once the init has been converted to proper tables */
pb0100_init(struct sd * sd)263 static int pb0100_init(struct sd *sd)
264 {
265 stv06xx_write_bridge(sd, STV_REG00, 1);
266 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0);
267
268 /* Reset sensor */
269 stv06xx_write_sensor(sd, PB_RESET, 1);
270 stv06xx_write_sensor(sd, PB_RESET, 0);
271
272 /* Disable chip */
273 stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3));
274
275 /* Gain stuff...*/
276 stv06xx_write_sensor(sd, PB_PREADCTRL, BIT(12)|BIT(10)|BIT(6));
277 stv06xx_write_sensor(sd, PB_ADCGLOBALGAIN, 12);
278
279 /* Set up auto-exposure */
280 /* ADC VREF_HI new setting for a transition
281 from the Expose1 to the Expose2 setting */
282 stv06xx_write_sensor(sd, PB_R28, 12);
283 /* gain max for autoexposure */
284 stv06xx_write_sensor(sd, PB_ADCMAXGAIN, 180);
285 /* gain min for autoexposure */
286 stv06xx_write_sensor(sd, PB_ADCMINGAIN, 12);
287 /* Maximum frame integration time (programmed into R8)
288 allowed for auto-exposure routine */
289 stv06xx_write_sensor(sd, PB_R54, 3);
290 /* Minimum frame integration time (programmed into R8)
291 allowed for auto-exposure routine */
292 stv06xx_write_sensor(sd, PB_R55, 0);
293 stv06xx_write_sensor(sd, PB_UPDATEINT, 1);
294 /* R15 Expose0 (maximum that auto-exposure may use) */
295 stv06xx_write_sensor(sd, PB_R15, 800);
296 /* R17 Expose2 (minimum that auto-exposure may use) */
297 stv06xx_write_sensor(sd, PB_R17, 10);
298
299 stv06xx_write_sensor(sd, PB_EXPGAIN, 0);
300
301 /* 0x14 */
302 stv06xx_write_sensor(sd, PB_VOFFSET, 0);
303 /* 0x0D */
304 stv06xx_write_sensor(sd, PB_ADCGAINH, 11);
305 /* Set black level (important!) */
306 stv06xx_write_sensor(sd, PB_ADCGAINL, 0);
307
308 /* ??? */
309 stv06xx_write_bridge(sd, STV_REG00, 0x11);
310 stv06xx_write_bridge(sd, STV_REG03, 0x45);
311 stv06xx_write_bridge(sd, STV_REG04, 0x07);
312
313 /* Scan/timing for the sensor */
314 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1));
315 stv06xx_write_sensor(sd, PB_CFILLIN, 14);
316 stv06xx_write_sensor(sd, PB_VBL, 0);
317 stv06xx_write_sensor(sd, PB_FINTTIME, 0);
318 stv06xx_write_sensor(sd, PB_RINTTIME, 123);
319
320 stv06xx_write_bridge(sd, STV_REG01, 0xc2);
321 stv06xx_write_bridge(sd, STV_REG02, 0xb0);
322 return 0;
323 }
324
pb0100_dump(struct sd * sd)325 static int pb0100_dump(struct sd *sd)
326 {
327 return 0;
328 }
329
pb0100_set_gain(struct gspca_dev * gspca_dev,__s32 val)330 static int pb0100_set_gain(struct gspca_dev *gspca_dev, __s32 val)
331 {
332 int err;
333 struct sd *sd = (struct sd *) gspca_dev;
334 struct pb0100_ctrls *ctrls = sd->sensor_priv;
335
336 err = stv06xx_write_sensor(sd, PB_G1GAIN, val);
337 if (!err)
338 err = stv06xx_write_sensor(sd, PB_G2GAIN, val);
339 PDEBUG(D_CONF, "Set green gain to %d, status: %d", val, err);
340
341 if (!err)
342 err = pb0100_set_red_balance(gspca_dev, ctrls->red->val);
343 if (!err)
344 err = pb0100_set_blue_balance(gspca_dev, ctrls->blue->val);
345
346 return err;
347 }
348
pb0100_set_red_balance(struct gspca_dev * gspca_dev,__s32 val)349 static int pb0100_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
350 {
351 int err;
352 struct sd *sd = (struct sd *) gspca_dev;
353 struct pb0100_ctrls *ctrls = sd->sensor_priv;
354
355 val += ctrls->gain->val;
356 if (val < 0)
357 val = 0;
358 else if (val > 255)
359 val = 255;
360
361 err = stv06xx_write_sensor(sd, PB_RGAIN, val);
362 PDEBUG(D_CONF, "Set red gain to %d, status: %d", val, err);
363
364 return err;
365 }
366
pb0100_set_blue_balance(struct gspca_dev * gspca_dev,__s32 val)367 static int pb0100_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
368 {
369 int err;
370 struct sd *sd = (struct sd *) gspca_dev;
371 struct pb0100_ctrls *ctrls = sd->sensor_priv;
372
373 val += ctrls->gain->val;
374 if (val < 0)
375 val = 0;
376 else if (val > 255)
377 val = 255;
378
379 err = stv06xx_write_sensor(sd, PB_BGAIN, val);
380 PDEBUG(D_CONF, "Set blue gain to %d, status: %d", val, err);
381
382 return err;
383 }
384
pb0100_set_exposure(struct gspca_dev * gspca_dev,__s32 val)385 static int pb0100_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
386 {
387 struct sd *sd = (struct sd *) gspca_dev;
388 int err;
389
390 err = stv06xx_write_sensor(sd, PB_RINTTIME, val);
391 PDEBUG(D_CONF, "Set exposure to %d, status: %d", val, err);
392
393 return err;
394 }
395
pb0100_set_autogain(struct gspca_dev * gspca_dev,__s32 val)396 static int pb0100_set_autogain(struct gspca_dev *gspca_dev, __s32 val)
397 {
398 int err;
399 struct sd *sd = (struct sd *) gspca_dev;
400 struct pb0100_ctrls *ctrls = sd->sensor_priv;
401
402 if (val) {
403 if (ctrls->natural->val)
404 val = BIT(6)|BIT(4)|BIT(0);
405 else
406 val = BIT(4)|BIT(0);
407 } else
408 val = 0;
409
410 err = stv06xx_write_sensor(sd, PB_EXPGAIN, val);
411 PDEBUG(D_CONF, "Set autogain to %d (natural: %d), status: %d",
412 val, ctrls->natural->val, err);
413
414 return err;
415 }
416
pb0100_set_autogain_target(struct gspca_dev * gspca_dev,__s32 val)417 static int pb0100_set_autogain_target(struct gspca_dev *gspca_dev, __s32 val)
418 {
419 int err, totalpixels, brightpixels, darkpixels;
420 struct sd *sd = (struct sd *) gspca_dev;
421
422 /* Number of pixels counted by the sensor when subsampling the pixels.
423 * Slightly larger than the real value to avoid oscillation */
424 totalpixels = gspca_dev->pixfmt.width * gspca_dev->pixfmt.height;
425 totalpixels = totalpixels/(8*8) + totalpixels/(64*64);
426
427 brightpixels = (totalpixels * val) >> 8;
428 darkpixels = totalpixels - brightpixels;
429 err = stv06xx_write_sensor(sd, PB_R21, brightpixels);
430 if (!err)
431 err = stv06xx_write_sensor(sd, PB_R22, darkpixels);
432
433 PDEBUG(D_CONF, "Set autogain target to %d, status: %d", val, err);
434
435 return err;
436 }
437