]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/media/video/gspca/stv06xx/stv06xx_st6422.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
[net-next-2.6.git] / drivers / media / video / gspca / stv06xx / stv06xx_st6422.c
CommitLineData
8668d504
HG		 1/*
2 * Support for the sensor part which is integrated (I think) into the
3 * st6422 stv06xx alike bridge, as its integrated there are no i2c writes
4 * but instead direct bridge writes.
5 *
6 * Copyright (c) 2009 Hans de Goede <hdegoede@redhat.com>
7 *
8 * Strongly based on qc-usb-messenger, which is:
9 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
10 * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
11 * Copyright (c) 2002, 2003 Tuukka Toivonen
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#include "stv06xx_st6422.h"
30
31static struct v4l2_pix_format st6422_mode[] = {
32 /* Note we actually get 124 lines of data, of which we skip the 4st
33 4 as they are garbage */
34 {
35 162,
36 120,
37 V4L2_PIX_FMT_SGRBG8,
38 V4L2_FIELD_NONE,
39 .sizeimage = 162 * 120,
40 .bytesperline = 162,
41 .colorspace = V4L2_COLORSPACE_SRGB,
42 .priv = 1
43 },
44 /* Note we actually get 248 lines of data, of which we skip the 4st
45 4 as they are garbage, and we tell the app it only gets the
46 first 240 of the 244 lines it actually gets, so that it ignores
47 the last 4. */
48 {
49 324,
50 240,
51 V4L2_PIX_FMT_SGRBG8,
52 V4L2_FIELD_NONE,
53 .sizeimage = 324 * 244,
54 .bytesperline = 324,
55 .colorspace = V4L2_COLORSPACE_SRGB,
56 .priv = 0
57 },
58};
59
60static const struct ctrl st6422_ctrl[] = {
61#define BRIGHTNESS_IDX 0
62 {
63 {
64 .id = V4L2_CID_BRIGHTNESS,
65 .type = V4L2_CTRL_TYPE_INTEGER,
66 .name = "Brightness",
67 .minimum = 0,
68 .maximum = 31,
69 .step = 1,
70 .default_value = 3
71 },
72 .set = st6422_set_brightness,
73 .get = st6422_get_brightness
74 },
75#define CONTRAST_IDX 1
76 {
77 {
78 .id = V4L2_CID_CONTRAST,
79 .type = V4L2_CTRL_TYPE_INTEGER,
80 .name = "Contrast",
81 .minimum = 0,
82 .maximum = 15,
83 .step = 1,
84 .default_value = 11
85 },
86 .set = st6422_set_contrast,
87 .get = st6422_get_contrast
88 },
89#define GAIN_IDX 2
90 {
91 {
92 .id = V4L2_CID_GAIN,
93 .type = V4L2_CTRL_TYPE_INTEGER,
94 .name = "Gain",
95 .minimum = 0,
96 .maximum = 255,
97 .step = 1,
98 .default_value = 64
99 },
100 .set = st6422_set_gain,
101 .get = st6422_get_gain
102 },
103#define EXPOSURE_IDX 3
104 {
105 {
106 .id = V4L2_CID_EXPOSURE,
107 .type = V4L2_CTRL_TYPE_INTEGER,
108 .name = "Exposure",
109 .minimum = 0,
110 .maximum = 1023,
111 .step = 1,
112 .default_value = 256
113 },
114 .set = st6422_set_exposure,
115 .get = st6422_get_exposure
116 },
117};
118
119static int st6422_probe(struct sd *sd)
120{
121 int i;
122 s32 *sensor_settings;
123
124 if (sd->bridge != BRIDGE_ST6422)
125 return -ENODEV;
126
127 info("st6422 sensor detected");
128
129 sensor_settings = kmalloc(ARRAY_SIZE(st6422_ctrl) * sizeof(s32),
130 GFP_KERNEL);
131 if (!sensor_settings)
132 return -ENOMEM;
133
134 sd->gspca_dev.cam.cam_mode = st6422_mode;
135 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(st6422_mode);
136 sd->desc.ctrls = st6422_ctrl;
137 sd->desc.nctrls = ARRAY_SIZE(st6422_ctrl);
138 sd->sensor_priv = sensor_settings;
139
140 for (i = 0; i < sd->desc.nctrls; i++)
141 sensor_settings[i] = st6422_ctrl[i].qctrl.default_value;
142
143 return 0;
144}
145
146static int st6422_init(struct sd *sd)
147{
148 int err = 0, i;
149
150 const u16 st6422_bridge_init[][2] = {
151 { STV_ISO_ENABLE, 0x00 }, /* disable capture */
152 { 0x1436, 0x00 },
153 { 0x1432, 0x03 }, /* 0x00-0x1F brightness */
154 { 0x143a, 0xF9 }, /* 0x00-0x0F contrast */
155 { 0x0509, 0x38 }, /* R */
156 { 0x050a, 0x38 }, /* G */
157 { 0x050b, 0x38 }, /* B */
158 { 0x050c, 0x2A },
159 { 0x050d, 0x01 },
160
161
162 { 0x1431, 0x00 }, /* 0x00-0x07 ??? */
163 { 0x1433, 0x34 }, /* 160x120, 0x00-0x01 night filter */
164 { 0x1438, 0x18 }, /* 640x480 */
165/* 18 bayes */
166/* 10 compressed? */
167
168 { 0x1439, 0x00 },
bf5c562a 169/* anti-noise? 0xa2 gives a perfect image */
8668d504
HG		 170
171 { 0x143b, 0x05 },
172 { 0x143c, 0x00 }, /* 0x00-0x01 - ??? */
173
174
175/* shutter time 0x0000-0x03FF */
176/* low value give good picures on moving objects (but requires much light) */
177/* high value gives good picures in darkness (but tends to be overexposed) */
178 { 0x143e, 0x01 },
179 { 0x143d, 0x00 },
180
181 { 0x1442, 0xe2 },
182/* write: 1x1x xxxx */
183/* read: 1x1x xxxx */
184/* bit 5 == button pressed and hold if 0 */
185/* write 0xe2,0xea */
186
187/* 0x144a */
188/* 0x00 init */
189/* bit 7 == button has been pressed, but not handled */
190
191/* interrupt */
192/* if(urb->iso_frame_desc[i].status == 0x80) { */
193/* if(urb->iso_frame_desc[i].status == 0x88) { */
194
195 { 0x1500, 0xd0 },
196 { 0x1500, 0xd0 },
197 { 0x1500, 0x50 }, /* 0x00 - 0xFF 0x80 == compr ? */
198
199 { 0x1501, 0xaf },
bf5c562a
EA		 200/* high val-> light area gets darker */
201/* low val -> light area gets lighter */
8668d504 202 { 0x1502, 0xc2 },
bf5c562a
EA		 203/* high val-> light area gets darker */
204/* low val -> light area gets lighter */
8668d504 205 { 0x1503, 0x45 },
bf5c562a
EA		 206/* high val-> light area gets darker */
207/* low val -> light area gets lighter */
8668d504
HG		 208 { 0x1505, 0x02 },
209/* 2 : 324x248 80352 bytes */
210/* 7 : 248x162 40176 bytes */
211/* c+f: 162*124 20088 bytes */
212
213 { 0x150e, 0x8e },
214 { 0x150f, 0x37 },
215 { 0x15c0, 0x00 },
216 { 0x15c1, 1023 }, /* 160x120, ISOC_PACKET_SIZE */
217 { 0x15c3, 0x08 }, /* 0x04/0x14 ... test pictures ??? */
218
219
220 { 0x143f, 0x01 }, /* commit settings */
221
222 };
223
224 for (i = 0; i < ARRAY_SIZE(st6422_bridge_init) && !err; i++) {
225 err = stv06xx_write_bridge(sd, st6422_bridge_init[i][0],
226 st6422_bridge_init[i][1]);
227 }
228
229 return err;
230}
231
232static void st6422_disconnect(struct sd *sd)
233{
234 sd->sensor = NULL;
235 kfree(sd->sensor_priv);
236}
237
238static int st6422_start(struct sd *sd)
239{
240 int err, packet_size;
241 struct cam *cam = &sd->gspca_dev.cam;
242 s32 *sensor_settings = sd->sensor_priv;
243 struct usb_host_interface *alt;
244 struct usb_interface *intf;
245
246 intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
247 alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
248 if (!alt) {
0b656321 249 err("Couldn't get altsetting");
8668d504
HG		 250 return -EIO;
251 }
252
253 packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
254 err = stv06xx_write_bridge(sd, 0x15c1, packet_size);
255 if (err < 0)
256 return err;
257
258 if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
259 err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
260 else
261 err = stv06xx_write_bridge(sd, 0x1505, 0x02);
262 if (err < 0)
263 return err;
264
265 err = st6422_set_brightness(&sd->gspca_dev,
266 sensor_settings[BRIGHTNESS_IDX]);
267 if (err < 0)
268 return err;
269
270 err = st6422_set_contrast(&sd->gspca_dev,
271 sensor_settings[CONTRAST_IDX]);
272 if (err < 0)
273 return err;
274
275 err = st6422_set_exposure(&sd->gspca_dev,
276 sensor_settings[EXPOSURE_IDX]);
277 if (err < 0)
278 return err;
279
280 err = st6422_set_gain(&sd->gspca_dev,
281 sensor_settings[GAIN_IDX]);
282 if (err < 0)
283 return err;
284
285 PDEBUG(D_STREAM, "Starting stream");
286
287 return 0;
288}
289
290static int st6422_stop(struct sd *sd)
291{
292 PDEBUG(D_STREAM, "Halting stream");
293
294 return 0;
295}
296
297static int st6422_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
298{
299 struct sd *sd = (struct sd *) gspca_dev;
300 s32 *sensor_settings = sd->sensor_priv;
301
302 *val = sensor_settings[BRIGHTNESS_IDX];
303
304 PDEBUG(D_V4L2, "Read brightness %d", *val);
305
306 return 0;
307}
308
309static int st6422_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
310{
311 int err;
312 struct sd *sd = (struct sd *) gspca_dev;
313 s32 *sensor_settings = sd->sensor_priv;
314
315 sensor_settings[BRIGHTNESS_IDX] = val;
316
317 if (!gspca_dev->streaming)
318 return 0;
319
320 /* val goes from 0 -> 31 */
321 PDEBUG(D_V4L2, "Set brightness to %d", val);
322 err = stv06xx_write_bridge(sd, 0x1432, val);
323 if (err < 0)
324 return err;
325
326 /* commit settings */
327 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
328 return (err < 0) ? err : 0;
329}
330
331static int st6422_get_contrast(struct gspca_dev *gspca_dev, __s32 *val)
332{
333 struct sd *sd = (struct sd *) gspca_dev;
334 s32 *sensor_settings = sd->sensor_priv;
335
336 *val = sensor_settings[CONTRAST_IDX];
337
338 PDEBUG(D_V4L2, "Read contrast %d", *val);
339
340 return 0;
341}
342
343static int st6422_set_contrast(struct gspca_dev *gspca_dev, __s32 val)
344{
345 int err;
346 struct sd *sd = (struct sd *) gspca_dev;
347 s32 *sensor_settings = sd->sensor_priv;
348
349 sensor_settings[CONTRAST_IDX] = val;
350
351 if (!gspca_dev->streaming)
352 return 0;
353
354 /* Val goes from 0 -> 15 */
355 PDEBUG(D_V4L2, "Set contrast to %d\n", val);
356 err = stv06xx_write_bridge(sd, 0x143a, 0xf0 | val);
357 if (err < 0)
358 return err;
359
360 /* commit settings */
361 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
362 return (err < 0) ? err : 0;
363}
364
365static int st6422_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
366{
367 struct sd *sd = (struct sd *) gspca_dev;
368 s32 *sensor_settings = sd->sensor_priv;
369
370 *val = sensor_settings[GAIN_IDX];
371
372 PDEBUG(D_V4L2, "Read gain %d", *val);
373
374 return 0;
375}
376
377static int st6422_set_gain(struct gspca_dev *gspca_dev, __s32 val)
378{
379 int err;
380 struct sd *sd = (struct sd *) gspca_dev;
381 s32 *sensor_settings = sd->sensor_priv;
382
383 sensor_settings[GAIN_IDX] = val;
384
385 if (!gspca_dev->streaming)
386 return 0;
387
388 PDEBUG(D_V4L2, "Set gain to %d", val);
389
390 /* Set red, green, blue, gain */
391 err = stv06xx_write_bridge(sd, 0x0509, val);
392 if (err < 0)
393 return err;
394
395 err = stv06xx_write_bridge(sd, 0x050a, val);
396 if (err < 0)
397 return err;
398
399 err = stv06xx_write_bridge(sd, 0x050b, val);
400 if (err < 0)
401 return err;
402
403 /* 2 mystery writes */
404 err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
405 if (err < 0)
406 return err;
407
408 err = stv06xx_write_bridge(sd, 0x050d, 0x01);
409 if (err < 0)
410 return err;
411
412 /* commit settings */
413 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
414 return (err < 0) ? err : 0;
415}
416
417static int st6422_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
418{
419 struct sd *sd = (struct sd *) gspca_dev;
420 s32 *sensor_settings = sd->sensor_priv;
421
422 *val = sensor_settings[EXPOSURE_IDX];
423
424 PDEBUG(D_V4L2, "Read exposure %d", *val);
425
426 return 0;
427}
428
429static int st6422_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
430{
431 int err;
432 struct sd *sd = (struct sd *) gspca_dev;
433 s32 *sensor_settings = sd->sensor_priv;
434
435 sensor_settings[EXPOSURE_IDX] = val;
436
437 if (!gspca_dev->streaming)
438 return 0;
439
440 PDEBUG(D_V4L2, "Set exposure to %d\n", val);
441 err = stv06xx_write_bridge(sd, 0x143d, val & 0xff);
442 if (err < 0)
443 return err;
444
445 err = stv06xx_write_bridge(sd, 0x143e, val >> 8);
446 if (err < 0)
447 return err;
448
449 /* commit settings */
450 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
451 return (err < 0) ? err : 0;
452}
Clone of davem's net-next-2.6 tree