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11#include <linux/videodev2.h>
12#include <linux/slab.h>
13#include <linux/i2c.h>
14#include <linux/delay.h>
15#include <linux/log2.h>
16
17#include <media/v4l2-subdev.h>
18#include <media/v4l2-chip-ident.h>
19#include <media/soc_camera.h>
20
21
22
23
24
25static char *sensor_type;
26module_param(sensor_type, charp, S_IRUGO);
27MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\"");
28
29
30#define MT9V022_CHIP_VERSION 0x00
31#define MT9V022_COLUMN_START 0x01
32#define MT9V022_ROW_START 0x02
33#define MT9V022_WINDOW_HEIGHT 0x03
34#define MT9V022_WINDOW_WIDTH 0x04
35#define MT9V022_HORIZONTAL_BLANKING 0x05
36#define MT9V022_VERTICAL_BLANKING 0x06
37#define MT9V022_CHIP_CONTROL 0x07
38#define MT9V022_SHUTTER_WIDTH1 0x08
39#define MT9V022_SHUTTER_WIDTH2 0x09
40#define MT9V022_SHUTTER_WIDTH_CTRL 0x0a
41#define MT9V022_TOTAL_SHUTTER_WIDTH 0x0b
42#define MT9V022_RESET 0x0c
43#define MT9V022_READ_MODE 0x0d
44#define MT9V022_MONITOR_MODE 0x0e
45#define MT9V022_PIXEL_OPERATION_MODE 0x0f
46#define MT9V022_LED_OUT_CONTROL 0x1b
47#define MT9V022_ADC_MODE_CONTROL 0x1c
48#define MT9V022_ANALOG_GAIN 0x35
49#define MT9V022_BLACK_LEVEL_CALIB_CTRL 0x47
50#define MT9V022_PIXCLK_FV_LV 0x74
51#define MT9V022_DIGITAL_TEST_PATTERN 0x7f
52#define MT9V022_AEC_AGC_ENABLE 0xAF
53#define MT9V022_MAX_TOTAL_SHUTTER_WIDTH 0xBD
54
55
56#define MT9V022_CHIP_CONTROL_DEFAULT 0x188
57
58#define MT9V022_MAX_WIDTH 752
59#define MT9V022_MAX_HEIGHT 480
60#define MT9V022_MIN_WIDTH 48
61#define MT9V022_MIN_HEIGHT 32
62#define MT9V022_COLUMN_SKIP 1
63#define MT9V022_ROW_SKIP 4
64
65static const struct soc_camera_data_format mt9v022_colour_formats[] = {
66
67
68 {
69 .name = "Bayer (sRGB) 10 bit",
70 .depth = 10,
71 .fourcc = V4L2_PIX_FMT_SBGGR16,
72 .colorspace = V4L2_COLORSPACE_SRGB,
73 }, {
74 .name = "Bayer (sRGB) 8 bit",
75 .depth = 8,
76 .fourcc = V4L2_PIX_FMT_SBGGR8,
77 .colorspace = V4L2_COLORSPACE_SRGB,
78 }
79};
80
81static const struct soc_camera_data_format mt9v022_monochrome_formats[] = {
82
83 {
84 .name = "Monochrome 10 bit",
85 .depth = 10,
86 .fourcc = V4L2_PIX_FMT_Y16,
87 }, {
88 .name = "Monochrome 8 bit",
89 .depth = 8,
90 .fourcc = V4L2_PIX_FMT_GREY,
91 },
92};
93
94struct mt9v022 {
95 struct v4l2_subdev subdev;
96 struct v4l2_rect rect;
97 __u32 fourcc;
98 int model;
99 u16 chip_control;
100};
101
102static struct mt9v022 *to_mt9v022(const struct i2c_client *client)
103{
104 return container_of(i2c_get_clientdata(client), struct mt9v022, subdev);
105}
106
107static int reg_read(struct i2c_client *client, const u8 reg)
108{
109 s32 data = i2c_smbus_read_word_data(client, reg);
110 return data < 0 ? data : swab16(data);
111}
112
113static int reg_write(struct i2c_client *client, const u8 reg,
114 const u16 data)
115{
116 return i2c_smbus_write_word_data(client, reg, swab16(data));
117}
118
119static int reg_set(struct i2c_client *client, const u8 reg,
120 const u16 data)
121{
122 int ret;
123
124 ret = reg_read(client, reg);
125 if (ret < 0)
126 return ret;
127 return reg_write(client, reg, ret | data);
128}
129
130static int reg_clear(struct i2c_client *client, const u8 reg,
131 const u16 data)
132{
133 int ret;
134
135 ret = reg_read(client, reg);
136 if (ret < 0)
137 return ret;
138 return reg_write(client, reg, ret & ~data);
139}
140
141static int mt9v022_init(struct i2c_client *client)
142{
143 struct mt9v022 *mt9v022 = to_mt9v022(client);
144 int ret;
145
146
147
148
149 mt9v022->chip_control |= 0x10;
150 ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
151 if (!ret)
152 ret = reg_write(client, MT9V022_READ_MODE, 0x300);
153
154
155 if (!ret)
156
157 ret = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x3);
158 if (!ret)
159 ret = reg_write(client, MT9V022_ANALOG_GAIN, 16);
160 if (!ret)
161 ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, 480);
162 if (!ret)
163 ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480);
164 if (!ret)
165
166 ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1);
167 if (!ret)
168 ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0);
169
170 return ret;
171}
172
173static int mt9v022_s_stream(struct v4l2_subdev *sd, int enable)
174{
175 struct i2c_client *client = sd->priv;
176 struct mt9v022 *mt9v022 = to_mt9v022(client);
177
178 if (enable)
179
180 mt9v022->chip_control &= ~0x10;
181 else
182
183 mt9v022->chip_control |= 0x10;
184
185 if (reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control) < 0)
186 return -EIO;
187 return 0;
188}
189
190static int mt9v022_set_bus_param(struct soc_camera_device *icd,
191 unsigned long flags)
192{
193 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
194 struct mt9v022 *mt9v022 = to_mt9v022(client);
195 struct soc_camera_link *icl = to_soc_camera_link(icd);
196 unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK;
197 int ret;
198 u16 pixclk = 0;
199
200
201 if (!is_power_of_2(width_flag))
202 return -EINVAL;
203
204 if (icl->set_bus_param) {
205 ret = icl->set_bus_param(icl, width_flag);
206 if (ret)
207 return ret;
208 } else {
209
210
211
212
213 if (width_flag != SOCAM_DATAWIDTH_10)
214 return -EINVAL;
215 }
216
217 flags = soc_camera_apply_sensor_flags(icl, flags);
218
219 if (flags & SOCAM_PCLK_SAMPLE_RISING)
220 pixclk |= 0x10;
221
222 if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH))
223 pixclk |= 0x1;
224
225 if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH))
226 pixclk |= 0x2;
227
228 ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk);
229 if (ret < 0)
230 return ret;
231
232 if (!(flags & SOCAM_MASTER))
233 mt9v022->chip_control &= ~0x8;
234
235 ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
236 if (ret < 0)
237 return ret;
238
239 dev_dbg(&client->dev, "Calculated pixclk 0x%x, chip control 0x%x\n",
240 pixclk, mt9v022->chip_control);
241
242 return 0;
243}
244
245static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd)
246{
247 struct soc_camera_link *icl = to_soc_camera_link(icd);
248 unsigned int width_flag;
249
250 if (icl->query_bus_param)
251 width_flag = icl->query_bus_param(icl) &
252 SOCAM_DATAWIDTH_MASK;
253 else
254 width_flag = SOCAM_DATAWIDTH_10;
255
256 return SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING |
257 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW |
258 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW |
259 SOCAM_DATA_ACTIVE_HIGH | SOCAM_MASTER | SOCAM_SLAVE |
260 width_flag;
261}
262
263static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
264{
265 struct i2c_client *client = sd->priv;
266 struct mt9v022 *mt9v022 = to_mt9v022(client);
267 struct v4l2_rect rect = a->c;
268 struct soc_camera_device *icd = client->dev.platform_data;
269 int ret;
270
271
272 if (mt9v022->fourcc == V4L2_PIX_FMT_SBGGR8 ||
273 mt9v022->fourcc == V4L2_PIX_FMT_SBGGR16) {
274 rect.width = ALIGN(rect.width, 2);
275 rect.height = ALIGN(rect.height, 2);
276
277 }
278
279 soc_camera_limit_side(&rect.left, &rect.width,
280 MT9V022_COLUMN_SKIP, MT9V022_MIN_WIDTH, MT9V022_MAX_WIDTH);
281
282 soc_camera_limit_side(&rect.top, &rect.height,
283 MT9V022_ROW_SKIP, MT9V022_MIN_HEIGHT, MT9V022_MAX_HEIGHT);
284
285
286 ret = reg_read(client, MT9V022_AEC_AGC_ENABLE);
287 if (ret >= 0) {
288 if (ret & 1)
289 ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH,
290 rect.height + icd->y_skip_top + 43);
291 else
292 ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH,
293 rect.height + icd->y_skip_top + 43);
294 }
295
296 if (!ret)
297 ret = reg_write(client, MT9V022_COLUMN_START, rect.left);
298 if (!ret)
299 ret = reg_write(client, MT9V022_ROW_START, rect.top);
300 if (!ret)
301
302
303 ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING,
304 rect.width > 660 - 43 ? 43 :
305 660 - rect.width);
306 if (!ret)
307 ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45);
308 if (!ret)
309 ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect.width);
310 if (!ret)
311 ret = reg_write(client, MT9V022_WINDOW_HEIGHT,
312 rect.height + icd->y_skip_top);
313
314 if (ret < 0)
315 return ret;
316
317 dev_dbg(&client->dev, "Frame %ux%u pixel\n", rect.width, rect.height);
318
319 mt9v022->rect = rect;
320
321 return 0;
322}
323
324static int mt9v022_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
325{
326 struct i2c_client *client = sd->priv;
327 struct mt9v022 *mt9v022 = to_mt9v022(client);
328
329 a->c = mt9v022->rect;
330 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
331
332 return 0;
333}
334
335static int mt9v022_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
336{
337 a->bounds.left = MT9V022_COLUMN_SKIP;
338 a->bounds.top = MT9V022_ROW_SKIP;
339 a->bounds.width = MT9V022_MAX_WIDTH;
340 a->bounds.height = MT9V022_MAX_HEIGHT;
341 a->defrect = a->bounds;
342 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
343 a->pixelaspect.numerator = 1;
344 a->pixelaspect.denominator = 1;
345
346 return 0;
347}
348
349static int mt9v022_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
350{
351 struct i2c_client *client = sd->priv;
352 struct mt9v022 *mt9v022 = to_mt9v022(client);
353 struct v4l2_pix_format *pix = &f->fmt.pix;
354
355 pix->width = mt9v022->rect.width;
356 pix->height = mt9v022->rect.height;
357 pix->pixelformat = mt9v022->fourcc;
358 pix->field = V4L2_FIELD_NONE;
359 pix->colorspace = V4L2_COLORSPACE_SRGB;
360
361 return 0;
362}
363
364static int mt9v022_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
365{
366 struct i2c_client *client = sd->priv;
367 struct mt9v022 *mt9v022 = to_mt9v022(client);
368 struct v4l2_pix_format *pix = &f->fmt.pix;
369 struct v4l2_crop a = {
370 .c = {
371 .left = mt9v022->rect.left,
372 .top = mt9v022->rect.top,
373 .width = pix->width,
374 .height = pix->height,
375 },
376 };
377 int ret;
378
379
380
381 switch (pix->pixelformat) {
382 case V4L2_PIX_FMT_GREY:
383 case V4L2_PIX_FMT_Y16:
384 if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM)
385 return -EINVAL;
386 break;
387 case V4L2_PIX_FMT_SBGGR8:
388 case V4L2_PIX_FMT_SBGGR16:
389 if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC)
390 return -EINVAL;
391 break;
392 case 0:
393
394 break;
395 default:
396 return -EINVAL;
397 }
398
399
400 ret = mt9v022_s_crop(sd, &a);
401 if (!ret) {
402 pix->width = mt9v022->rect.width;
403 pix->height = mt9v022->rect.height;
404 mt9v022->fourcc = pix->pixelformat;
405 }
406
407 return ret;
408}
409
410static int mt9v022_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
411{
412 struct i2c_client *client = sd->priv;
413 struct soc_camera_device *icd = client->dev.platform_data;
414 struct v4l2_pix_format *pix = &f->fmt.pix;
415 int align = pix->pixelformat == V4L2_PIX_FMT_SBGGR8 ||
416 pix->pixelformat == V4L2_PIX_FMT_SBGGR16;
417
418 v4l_bound_align_image(&pix->width, MT9V022_MIN_WIDTH,
419 MT9V022_MAX_WIDTH, align,
420 &pix->height, MT9V022_MIN_HEIGHT + icd->y_skip_top,
421 MT9V022_MAX_HEIGHT + icd->y_skip_top, align, 0);
422
423 return 0;
424}
425
426static int mt9v022_g_chip_ident(struct v4l2_subdev *sd,
427 struct v4l2_dbg_chip_ident *id)
428{
429 struct i2c_client *client = sd->priv;
430 struct mt9v022 *mt9v022 = to_mt9v022(client);
431
432 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
433 return -EINVAL;
434
435 if (id->match.addr != client->addr)
436 return -ENODEV;
437
438 id->ident = mt9v022->model;
439 id->revision = 0;
440
441 return 0;
442}
443
444#ifdef CONFIG_VIDEO_ADV_DEBUG
445static int mt9v022_g_register(struct v4l2_subdev *sd,
446 struct v4l2_dbg_register *reg)
447{
448 struct i2c_client *client = sd->priv;
449
450 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
451 return -EINVAL;
452
453 if (reg->match.addr != client->addr)
454 return -ENODEV;
455
456 reg->size = 2;
457 reg->val = reg_read(client, reg->reg);
458
459 if (reg->val > 0xffff)
460 return -EIO;
461
462 return 0;
463}
464
465static int mt9v022_s_register(struct v4l2_subdev *sd,
466 struct v4l2_dbg_register *reg)
467{
468 struct i2c_client *client = sd->priv;
469
470 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
471 return -EINVAL;
472
473 if (reg->match.addr != client->addr)
474 return -ENODEV;
475
476 if (reg_write(client, reg->reg, reg->val) < 0)
477 return -EIO;
478
479 return 0;
480}
481#endif
482
483static const struct v4l2_queryctrl mt9v022_controls[] = {
484 {
485 .id = V4L2_CID_VFLIP,
486 .type = V4L2_CTRL_TYPE_BOOLEAN,
487 .name = "Flip Vertically",
488 .minimum = 0,
489 .maximum = 1,
490 .step = 1,
491 .default_value = 0,
492 }, {
493 .id = V4L2_CID_HFLIP,
494 .type = V4L2_CTRL_TYPE_BOOLEAN,
495 .name = "Flip Horizontally",
496 .minimum = 0,
497 .maximum = 1,
498 .step = 1,
499 .default_value = 0,
500 }, {
501 .id = V4L2_CID_GAIN,
502 .type = V4L2_CTRL_TYPE_INTEGER,
503 .name = "Analog Gain",
504 .minimum = 64,
505 .maximum = 127,
506 .step = 1,
507 .default_value = 64,
508 .flags = V4L2_CTRL_FLAG_SLIDER,
509 }, {
510 .id = V4L2_CID_EXPOSURE,
511 .type = V4L2_CTRL_TYPE_INTEGER,
512 .name = "Exposure",
513 .minimum = 1,
514 .maximum = 255,
515 .step = 1,
516 .default_value = 255,
517 .flags = V4L2_CTRL_FLAG_SLIDER,
518 }, {
519 .id = V4L2_CID_AUTOGAIN,
520 .type = V4L2_CTRL_TYPE_BOOLEAN,
521 .name = "Automatic Gain",
522 .minimum = 0,
523 .maximum = 1,
524 .step = 1,
525 .default_value = 1,
526 }, {
527 .id = V4L2_CID_EXPOSURE_AUTO,
528 .type = V4L2_CTRL_TYPE_BOOLEAN,
529 .name = "Automatic Exposure",
530 .minimum = 0,
531 .maximum = 1,
532 .step = 1,
533 .default_value = 1,
534 }
535};
536
537static struct soc_camera_ops mt9v022_ops = {
538 .set_bus_param = mt9v022_set_bus_param,
539 .query_bus_param = mt9v022_query_bus_param,
540 .controls = mt9v022_controls,
541 .num_controls = ARRAY_SIZE(mt9v022_controls),
542};
543
544static int mt9v022_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
545{
546 struct i2c_client *client = sd->priv;
547 const struct v4l2_queryctrl *qctrl;
548 unsigned long range;
549 int data;
550
551 qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id);
552
553 switch (ctrl->id) {
554 case V4L2_CID_VFLIP:
555 data = reg_read(client, MT9V022_READ_MODE);
556 if (data < 0)
557 return -EIO;
558 ctrl->value = !!(data & 0x10);
559 break;
560 case V4L2_CID_HFLIP:
561 data = reg_read(client, MT9V022_READ_MODE);
562 if (data < 0)
563 return -EIO;
564 ctrl->value = !!(data & 0x20);
565 break;
566 case V4L2_CID_EXPOSURE_AUTO:
567 data = reg_read(client, MT9V022_AEC_AGC_ENABLE);
568 if (data < 0)
569 return -EIO;
570 ctrl->value = !!(data & 0x1);
571 break;
572 case V4L2_CID_AUTOGAIN:
573 data = reg_read(client, MT9V022_AEC_AGC_ENABLE);
574 if (data < 0)
575 return -EIO;
576 ctrl->value = !!(data & 0x2);
577 break;
578 case V4L2_CID_GAIN:
579 data = reg_read(client, MT9V022_ANALOG_GAIN);
580 if (data < 0)
581 return -EIO;
582
583 range = qctrl->maximum - qctrl->minimum;
584 ctrl->value = ((data - 16) * range + 24) / 48 + qctrl->minimum;
585
586 break;
587 case V4L2_CID_EXPOSURE:
588 data = reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH);
589 if (data < 0)
590 return -EIO;
591
592 range = qctrl->maximum - qctrl->minimum;
593 ctrl->value = ((data - 1) * range + 239) / 479 + qctrl->minimum;
594
595 break;
596 }
597 return 0;
598}
599
600static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
601{
602 int data;
603 struct i2c_client *client = sd->priv;
604 const struct v4l2_queryctrl *qctrl;
605
606 qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id);
607 if (!qctrl)
608 return -EINVAL;
609
610 switch (ctrl->id) {
611 case V4L2_CID_VFLIP:
612 if (ctrl->value)
613 data = reg_set(client, MT9V022_READ_MODE, 0x10);
614 else
615 data = reg_clear(client, MT9V022_READ_MODE, 0x10);
616 if (data < 0)
617 return -EIO;
618 break;
619 case V4L2_CID_HFLIP:
620 if (ctrl->value)
621 data = reg_set(client, MT9V022_READ_MODE, 0x20);
622 else
623 data = reg_clear(client, MT9V022_READ_MODE, 0x20);
624 if (data < 0)
625 return -EIO;
626 break;
627 case V4L2_CID_GAIN:
628
629 if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
630 return -EINVAL;
631 else {
632 unsigned long range = qctrl->maximum - qctrl->minimum;
633
634 unsigned long gain = ((ctrl->value - qctrl->minimum) *
635 48 + range / 2) / range + 16;
636 if (gain >= 32)
637 gain &= ~1;
638
639
640
641 if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0)
642 return -EIO;
643
644 dev_dbg(&client->dev, "Setting gain from %d to %lu\n",
645 reg_read(client, MT9V022_ANALOG_GAIN), gain);
646 if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0)
647 return -EIO;
648 }
649 break;
650 case V4L2_CID_EXPOSURE:
651
652 if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
653 return -EINVAL;
654 else {
655 unsigned long range = qctrl->maximum - qctrl->minimum;
656 unsigned long shutter = ((ctrl->value - qctrl->minimum) *
657 479 + range / 2) / range + 1;
658
659
660
661 if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0)
662 return -EIO;
663
664 dev_dbg(&client->dev, "Shutter width from %d to %lu\n",
665 reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH),
666 shutter);
667 if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH,
668 shutter) < 0)
669 return -EIO;
670 }
671 break;
672 case V4L2_CID_AUTOGAIN:
673 if (ctrl->value)
674 data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2);
675 else
676 data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2);
677 if (data < 0)
678 return -EIO;
679 break;
680 case V4L2_CID_EXPOSURE_AUTO:
681 if (ctrl->value)
682 data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1);
683 else
684 data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1);
685 if (data < 0)
686 return -EIO;
687 break;
688 }
689 return 0;
690}
691
692
693
694static int mt9v022_video_probe(struct soc_camera_device *icd,
695 struct i2c_client *client)
696{
697 struct mt9v022 *mt9v022 = to_mt9v022(client);
698 struct soc_camera_link *icl = to_soc_camera_link(icd);
699 s32 data;
700 int ret;
701 unsigned long flags;
702
703 if (!icd->dev.parent ||
704 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
705 return -ENODEV;
706
707
708 data = reg_read(client, MT9V022_CHIP_VERSION);
709
710
711 if (data != 0x1311 && data != 0x1313) {
712 ret = -ENODEV;
713 dev_info(&client->dev, "No MT9V022 found, ID register 0x%x\n",
714 data);
715 goto ei2c;
716 }
717
718
719 ret = reg_write(client, MT9V022_RESET, 1);
720 if (ret < 0)
721 goto ei2c;
722
723 udelay(200);
724 if (reg_read(client, MT9V022_RESET)) {
725 dev_err(&client->dev, "Resetting MT9V022 failed!\n");
726 if (ret > 0)
727 ret = -EIO;
728 goto ei2c;
729 }
730
731
732 if (sensor_type && (!strcmp("colour", sensor_type) ||
733 !strcmp("color", sensor_type))) {
734 ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11);
735 mt9v022->model = V4L2_IDENT_MT9V022IX7ATC;
736 icd->formats = mt9v022_colour_formats;
737 } else {
738 ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11);
739 mt9v022->model = V4L2_IDENT_MT9V022IX7ATM;
740 icd->formats = mt9v022_monochrome_formats;
741 }
742
743 if (ret < 0)
744 goto ei2c;
745
746 icd->num_formats = 0;
747
748
749
750
751
752
753 if (icl->query_bus_param)
754 flags = icl->query_bus_param(icl);
755 else
756 flags = SOCAM_DATAWIDTH_10;
757
758 if (flags & SOCAM_DATAWIDTH_10)
759 icd->num_formats++;
760 else
761 icd->formats++;
762
763 if (flags & SOCAM_DATAWIDTH_8)
764 icd->num_formats++;
765
766 mt9v022->fourcc = icd->formats->fourcc;
767
768 dev_info(&client->dev, "Detected a MT9V022 chip ID %x, %s sensor\n",
769 data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ?
770 "monochrome" : "colour");
771
772 ret = mt9v022_init(client);
773 if (ret < 0)
774 dev_err(&client->dev, "Failed to initialise the camera\n");
775
776ei2c:
777 return ret;
778}
779
780static void mt9v022_video_remove(struct soc_camera_device *icd)
781{
782 struct soc_camera_link *icl = to_soc_camera_link(icd);
783
784 dev_dbg(&icd->dev, "Video removed: %p, %p\n",
785 icd->dev.parent, icd->vdev);
786 if (icl->free_bus)
787 icl->free_bus(icl);
788}
789
790static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = {
791 .g_ctrl = mt9v022_g_ctrl,
792 .s_ctrl = mt9v022_s_ctrl,
793 .g_chip_ident = mt9v022_g_chip_ident,
794#ifdef CONFIG_VIDEO_ADV_DEBUG
795 .g_register = mt9v022_g_register,
796 .s_register = mt9v022_s_register,
797#endif
798};
799
800static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = {
801 .s_stream = mt9v022_s_stream,
802 .s_fmt = mt9v022_s_fmt,
803 .g_fmt = mt9v022_g_fmt,
804 .try_fmt = mt9v022_try_fmt,
805 .s_crop = mt9v022_s_crop,
806 .g_crop = mt9v022_g_crop,
807 .cropcap = mt9v022_cropcap,
808};
809
810static struct v4l2_subdev_ops mt9v022_subdev_ops = {
811 .core = &mt9v022_subdev_core_ops,
812 .video = &mt9v022_subdev_video_ops,
813};
814
815static int mt9v022_probe(struct i2c_client *client,
816 const struct i2c_device_id *did)
817{
818 struct mt9v022 *mt9v022;
819 struct soc_camera_device *icd = client->dev.platform_data;
820 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
821 struct soc_camera_link *icl;
822 int ret;
823
824 if (!icd) {
825 dev_err(&client->dev, "MT9V022: missing soc-camera data!\n");
826 return -EINVAL;
827 }
828
829 icl = to_soc_camera_link(icd);
830 if (!icl) {
831 dev_err(&client->dev, "MT9V022 driver needs platform data\n");
832 return -EINVAL;
833 }
834
835 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
836 dev_warn(&adapter->dev,
837 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
838 return -EIO;
839 }
840
841 mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL);
842 if (!mt9v022)
843 return -ENOMEM;
844
845 v4l2_i2c_subdev_init(&mt9v022->subdev, client, &mt9v022_subdev_ops);
846
847 mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT;
848
849 icd->ops = &mt9v022_ops;
850
851
852
853
854 icd->y_skip_top = 1;
855
856 mt9v022->rect.left = MT9V022_COLUMN_SKIP;
857 mt9v022->rect.top = MT9V022_ROW_SKIP;
858 mt9v022->rect.width = MT9V022_MAX_WIDTH;
859 mt9v022->rect.height = MT9V022_MAX_HEIGHT;
860
861 ret = mt9v022_video_probe(icd, client);
862 if (ret) {
863 icd->ops = NULL;
864 i2c_set_clientdata(client, NULL);
865 kfree(mt9v022);
866 }
867
868 return ret;
869}
870
871static int mt9v022_remove(struct i2c_client *client)
872{
873 struct mt9v022 *mt9v022 = to_mt9v022(client);
874 struct soc_camera_device *icd = client->dev.platform_data;
875
876 icd->ops = NULL;
877 mt9v022_video_remove(icd);
878 i2c_set_clientdata(client, NULL);
879 client->driver = NULL;
880 kfree(mt9v022);
881
882 return 0;
883}
884static const struct i2c_device_id mt9v022_id[] = {
885 { "mt9v022", 0 },
886 { }
887};
888MODULE_DEVICE_TABLE(i2c, mt9v022_id);
889
890static struct i2c_driver mt9v022_i2c_driver = {
891 .driver = {
892 .name = "mt9v022",
893 },
894 .probe = mt9v022_probe,
895 .remove = mt9v022_remove,
896 .id_table = mt9v022_id,
897};
898
899static int __init mt9v022_mod_init(void)
900{
901 return i2c_add_driver(&mt9v022_i2c_driver);
902}
903
904static void __exit mt9v022_mod_exit(void)
905{
906 i2c_del_driver(&mt9v022_i2c_driver);
907}
908
909module_init(mt9v022_mod_init);
910module_exit(mt9v022_mod_exit);
911
912MODULE_DESCRIPTION("Micron MT9V022 Camera driver");
913MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
914MODULE_LICENSE("GPL");
915
