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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
25
26
27static char *sensor_type;
28module_param(sensor_type, charp, S_IRUGO);
29MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\"");
30
31
32#define MT9V022_CHIP_VERSION 0x00
33#define MT9V022_COLUMN_START 0x01
34#define MT9V022_ROW_START 0x02
35#define MT9V022_WINDOW_HEIGHT 0x03
36#define MT9V022_WINDOW_WIDTH 0x04
37#define MT9V022_HORIZONTAL_BLANKING 0x05
38#define MT9V022_VERTICAL_BLANKING 0x06
39#define MT9V022_CHIP_CONTROL 0x07
40#define MT9V022_SHUTTER_WIDTH1 0x08
41#define MT9V022_SHUTTER_WIDTH2 0x09
42#define MT9V022_SHUTTER_WIDTH_CTRL 0x0a
43#define MT9V022_TOTAL_SHUTTER_WIDTH 0x0b
44#define MT9V022_RESET 0x0c
45#define MT9V022_READ_MODE 0x0d
46#define MT9V022_MONITOR_MODE 0x0e
47#define MT9V022_PIXEL_OPERATION_MODE 0x0f
48#define MT9V022_LED_OUT_CONTROL 0x1b
49#define MT9V022_ADC_MODE_CONTROL 0x1c
50#define MT9V022_ANALOG_GAIN 0x35
51#define MT9V022_BLACK_LEVEL_CALIB_CTRL 0x47
52#define MT9V022_PIXCLK_FV_LV 0x74
53#define MT9V022_DIGITAL_TEST_PATTERN 0x7f
54#define MT9V022_AEC_AGC_ENABLE 0xAF
55#define MT9V022_MAX_TOTAL_SHUTTER_WIDTH 0xBD
56
57
58#define MT9V022_CHIP_CONTROL_DEFAULT 0x188
59
60#define MT9V022_MAX_WIDTH 752
61#define MT9V022_MAX_HEIGHT 480
62#define MT9V022_MIN_WIDTH 48
63#define MT9V022_MIN_HEIGHT 32
64#define MT9V022_COLUMN_SKIP 1
65#define MT9V022_ROW_SKIP 4
66
67
68struct mt9v022_datafmt {
69 enum v4l2_mbus_pixelcode code;
70 enum v4l2_colorspace colorspace;
71};
72
73
74static const struct mt9v022_datafmt *mt9v022_find_datafmt(
75 enum v4l2_mbus_pixelcode code, const struct mt9v022_datafmt *fmt,
76 int n)
77{
78 int i;
79 for (i = 0; i < n; i++)
80 if (fmt[i].code == code)
81 return fmt + i;
82
83 return NULL;
84}
85
86static const struct mt9v022_datafmt mt9v022_colour_fmts[] = {
87
88
89
90
91 {V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB},
92 {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
93};
94
95static const struct mt9v022_datafmt mt9v022_monochrome_fmts[] = {
96
97 {V4L2_MBUS_FMT_Y10_1X10, V4L2_COLORSPACE_JPEG},
98 {V4L2_MBUS_FMT_Y8_1X8, V4L2_COLORSPACE_JPEG},
99};
100
101struct mt9v022 {
102 struct v4l2_subdev subdev;
103 struct v4l2_rect rect;
104 const struct mt9v022_datafmt *fmt;
105 const struct mt9v022_datafmt *fmts;
106 int num_fmts;
107 int model;
108 u16 chip_control;
109 unsigned short y_skip_top;
110};
111
112static struct mt9v022 *to_mt9v022(const struct i2c_client *client)
113{
114 return container_of(i2c_get_clientdata(client), struct mt9v022, subdev);
115}
116
117static int reg_read(struct i2c_client *client, const u8 reg)
118{
119 s32 data = i2c_smbus_read_word_data(client, reg);
120 return data < 0 ? data : swab16(data);
121}
122
123static int reg_write(struct i2c_client *client, const u8 reg,
124 const u16 data)
125{
126 return i2c_smbus_write_word_data(client, reg, swab16(data));
127}
128
129static int reg_set(struct i2c_client *client, const u8 reg,
130 const u16 data)
131{
132 int ret;
133
134 ret = reg_read(client, reg);
135 if (ret < 0)
136 return ret;
137 return reg_write(client, reg, ret | data);
138}
139
140static int reg_clear(struct i2c_client *client, const u8 reg,
141 const u16 data)
142{
143 int ret;
144
145 ret = reg_read(client, reg);
146 if (ret < 0)
147 return ret;
148 return reg_write(client, reg, ret & ~data);
149}
150
151static int mt9v022_init(struct i2c_client *client)
152{
153 struct mt9v022 *mt9v022 = to_mt9v022(client);
154 int ret;
155
156
157
158
159
160
161 mt9v022->chip_control |= 0x10;
162 ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
163 if (!ret)
164 ret = reg_write(client, MT9V022_READ_MODE, 0x300);
165
166
167 if (!ret)
168
169 ret = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x3);
170 if (!ret)
171 ret = reg_write(client, MT9V022_ANALOG_GAIN, 16);
172 if (!ret)
173 ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, 480);
174 if (!ret)
175 ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480);
176 if (!ret)
177
178 ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1);
179 if (!ret)
180 ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0);
181
182 return ret;
183}
184
185static int mt9v022_s_stream(struct v4l2_subdev *sd, int enable)
186{
187 struct i2c_client *client = v4l2_get_subdevdata(sd);
188 struct mt9v022 *mt9v022 = to_mt9v022(client);
189
190 if (enable)
191
192 mt9v022->chip_control &= ~0x10;
193 else
194
195 mt9v022->chip_control |= 0x10;
196
197 if (reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control) < 0)
198 return -EIO;
199 return 0;
200}
201
202static int mt9v022_set_bus_param(struct soc_camera_device *icd,
203 unsigned long flags)
204{
205 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
206 struct mt9v022 *mt9v022 = to_mt9v022(client);
207 struct soc_camera_link *icl = to_soc_camera_link(icd);
208 unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK;
209 int ret;
210 u16 pixclk = 0;
211
212
213 if (!is_power_of_2(width_flag))
214 return -EINVAL;
215
216 if (icl->set_bus_param) {
217 ret = icl->set_bus_param(icl, width_flag);
218 if (ret)
219 return ret;
220 } else {
221
222
223
224
225 if (width_flag != SOCAM_DATAWIDTH_10)
226 return -EINVAL;
227 }
228
229 flags = soc_camera_apply_sensor_flags(icl, flags);
230
231 if (flags & SOCAM_PCLK_SAMPLE_FALLING)
232 pixclk |= 0x10;
233
234 if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH))
235 pixclk |= 0x1;
236
237 if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH))
238 pixclk |= 0x2;
239
240 ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk);
241 if (ret < 0)
242 return ret;
243
244 if (!(flags & SOCAM_MASTER))
245 mt9v022->chip_control &= ~0x8;
246
247 ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
248 if (ret < 0)
249 return ret;
250
251 dev_dbg(&client->dev, "Calculated pixclk 0x%x, chip control 0x%x\n",
252 pixclk, mt9v022->chip_control);
253
254 return 0;
255}
256
257static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd)
258{
259 struct soc_camera_link *icl = to_soc_camera_link(icd);
260 unsigned int flags = SOCAM_MASTER | SOCAM_SLAVE |
261 SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING |
262 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW |
263 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW |
264 SOCAM_DATA_ACTIVE_HIGH;
265
266 if (icl->query_bus_param)
267 flags |= icl->query_bus_param(icl) & SOCAM_DATAWIDTH_MASK;
268 else
269 flags |= SOCAM_DATAWIDTH_10;
270
271 return soc_camera_apply_sensor_flags(icl, flags);
272}
273
274static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
275{
276 struct i2c_client *client = v4l2_get_subdevdata(sd);
277 struct mt9v022 *mt9v022 = to_mt9v022(client);
278 struct v4l2_rect rect = a->c;
279 int ret;
280
281
282 if (mt9v022->fmts == mt9v022_colour_fmts) {
283 rect.width = ALIGN(rect.width, 2);
284 rect.height = ALIGN(rect.height, 2);
285
286 }
287
288 soc_camera_limit_side(&rect.left, &rect.width,
289 MT9V022_COLUMN_SKIP, MT9V022_MIN_WIDTH, MT9V022_MAX_WIDTH);
290
291 soc_camera_limit_side(&rect.top, &rect.height,
292 MT9V022_ROW_SKIP, MT9V022_MIN_HEIGHT, MT9V022_MAX_HEIGHT);
293
294
295 ret = reg_read(client, MT9V022_AEC_AGC_ENABLE);
296 if (ret >= 0) {
297 if (ret & 1)
298 ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH,
299 rect.height + mt9v022->y_skip_top + 43);
300 else
301 ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH,
302 rect.height + mt9v022->y_skip_top + 43);
303 }
304
305 if (!ret)
306 ret = reg_write(client, MT9V022_COLUMN_START, rect.left);
307 if (!ret)
308 ret = reg_write(client, MT9V022_ROW_START, rect.top);
309 if (!ret)
310
311
312
313
314 ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING,
315 rect.width > 660 - 43 ? 43 :
316 660 - rect.width);
317 if (!ret)
318 ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45);
319 if (!ret)
320 ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect.width);
321 if (!ret)
322 ret = reg_write(client, MT9V022_WINDOW_HEIGHT,
323 rect.height + mt9v022->y_skip_top);
324
325 if (ret < 0)
326 return ret;
327
328 dev_dbg(&client->dev, "Frame %dx%d pixel\n", rect.width, rect.height);
329
330 mt9v022->rect = rect;
331
332 return 0;
333}
334
335static int mt9v022_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
336{
337 struct i2c_client *client = v4l2_get_subdevdata(sd);
338 struct mt9v022 *mt9v022 = to_mt9v022(client);
339
340 a->c = mt9v022->rect;
341 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
342
343 return 0;
344}
345
346static int mt9v022_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
347{
348 a->bounds.left = MT9V022_COLUMN_SKIP;
349 a->bounds.top = MT9V022_ROW_SKIP;
350 a->bounds.width = MT9V022_MAX_WIDTH;
351 a->bounds.height = MT9V022_MAX_HEIGHT;
352 a->defrect = a->bounds;
353 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
354 a->pixelaspect.numerator = 1;
355 a->pixelaspect.denominator = 1;
356
357 return 0;
358}
359
360static int mt9v022_g_fmt(struct v4l2_subdev *sd,
361 struct v4l2_mbus_framefmt *mf)
362{
363 struct i2c_client *client = v4l2_get_subdevdata(sd);
364 struct mt9v022 *mt9v022 = to_mt9v022(client);
365
366 mf->width = mt9v022->rect.width;
367 mf->height = mt9v022->rect.height;
368 mf->code = mt9v022->fmt->code;
369 mf->colorspace = mt9v022->fmt->colorspace;
370 mf->field = V4L2_FIELD_NONE;
371
372 return 0;
373}
374
375static int mt9v022_s_fmt(struct v4l2_subdev *sd,
376 struct v4l2_mbus_framefmt *mf)
377{
378 struct i2c_client *client = v4l2_get_subdevdata(sd);
379 struct mt9v022 *mt9v022 = to_mt9v022(client);
380 struct v4l2_crop a = {
381 .c = {
382 .left = mt9v022->rect.left,
383 .top = mt9v022->rect.top,
384 .width = mf->width,
385 .height = mf->height,
386 },
387 };
388 int ret;
389
390
391
392
393
394 switch (mf->code) {
395 case V4L2_MBUS_FMT_Y8_1X8:
396 case V4L2_MBUS_FMT_Y10_1X10:
397 if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM)
398 return -EINVAL;
399 break;
400 case V4L2_MBUS_FMT_SBGGR8_1X8:
401 case V4L2_MBUS_FMT_SBGGR10_1X10:
402 if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC)
403 return -EINVAL;
404 break;
405 default:
406 return -EINVAL;
407 }
408
409
410 ret = mt9v022_s_crop(sd, &a);
411 if (!ret) {
412 mf->width = mt9v022->rect.width;
413 mf->height = mt9v022->rect.height;
414 mt9v022->fmt = mt9v022_find_datafmt(mf->code,
415 mt9v022->fmts, mt9v022->num_fmts);
416 mf->colorspace = mt9v022->fmt->colorspace;
417 }
418
419 return ret;
420}
421
422static int mt9v022_try_fmt(struct v4l2_subdev *sd,
423 struct v4l2_mbus_framefmt *mf)
424{
425 struct i2c_client *client = v4l2_get_subdevdata(sd);
426 struct mt9v022 *mt9v022 = to_mt9v022(client);
427 const struct mt9v022_datafmt *fmt;
428 int align = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
429 mf->code == V4L2_MBUS_FMT_SBGGR10_1X10;
430
431 v4l_bound_align_image(&mf->width, MT9V022_MIN_WIDTH,
432 MT9V022_MAX_WIDTH, align,
433 &mf->height, MT9V022_MIN_HEIGHT + mt9v022->y_skip_top,
434 MT9V022_MAX_HEIGHT + mt9v022->y_skip_top, align, 0);
435
436 fmt = mt9v022_find_datafmt(mf->code, mt9v022->fmts,
437 mt9v022->num_fmts);
438 if (!fmt) {
439 fmt = mt9v022->fmt;
440 mf->code = fmt->code;
441 }
442
443 mf->colorspace = fmt->colorspace;
444
445 return 0;
446}
447
448static int mt9v022_g_chip_ident(struct v4l2_subdev *sd,
449 struct v4l2_dbg_chip_ident *id)
450{
451 struct i2c_client *client = v4l2_get_subdevdata(sd);
452 struct mt9v022 *mt9v022 = to_mt9v022(client);
453
454 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
455 return -EINVAL;
456
457 if (id->match.addr != client->addr)
458 return -ENODEV;
459
460 id->ident = mt9v022->model;
461 id->revision = 0;
462
463 return 0;
464}
465
466#ifdef CONFIG_VIDEO_ADV_DEBUG
467static int mt9v022_g_register(struct v4l2_subdev *sd,
468 struct v4l2_dbg_register *reg)
469{
470 struct i2c_client *client = v4l2_get_subdevdata(sd);
471
472 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
473 return -EINVAL;
474
475 if (reg->match.addr != client->addr)
476 return -ENODEV;
477
478 reg->size = 2;
479 reg->val = reg_read(client, reg->reg);
480
481 if (reg->val > 0xffff)
482 return -EIO;
483
484 return 0;
485}
486
487static int mt9v022_s_register(struct v4l2_subdev *sd,
488 struct v4l2_dbg_register *reg)
489{
490 struct i2c_client *client = v4l2_get_subdevdata(sd);
491
492 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
493 return -EINVAL;
494
495 if (reg->match.addr != client->addr)
496 return -ENODEV;
497
498 if (reg_write(client, reg->reg, reg->val) < 0)
499 return -EIO;
500
501 return 0;
502}
503#endif
504
505static const struct v4l2_queryctrl mt9v022_controls[] = {
506 {
507 .id = V4L2_CID_VFLIP,
508 .type = V4L2_CTRL_TYPE_BOOLEAN,
509 .name = "Flip Vertically",
510 .minimum = 0,
511 .maximum = 1,
512 .step = 1,
513 .default_value = 0,
514 }, {
515 .id = V4L2_CID_HFLIP,
516 .type = V4L2_CTRL_TYPE_BOOLEAN,
517 .name = "Flip Horizontally",
518 .minimum = 0,
519 .maximum = 1,
520 .step = 1,
521 .default_value = 0,
522 }, {
523 .id = V4L2_CID_GAIN,
524 .type = V4L2_CTRL_TYPE_INTEGER,
525 .name = "Analog Gain",
526 .minimum = 64,
527 .maximum = 127,
528 .step = 1,
529 .default_value = 64,
530 .flags = V4L2_CTRL_FLAG_SLIDER,
531 }, {
532 .id = V4L2_CID_EXPOSURE,
533 .type = V4L2_CTRL_TYPE_INTEGER,
534 .name = "Exposure",
535 .minimum = 1,
536 .maximum = 255,
537 .step = 1,
538 .default_value = 255,
539 .flags = V4L2_CTRL_FLAG_SLIDER,
540 }, {
541 .id = V4L2_CID_AUTOGAIN,
542 .type = V4L2_CTRL_TYPE_BOOLEAN,
543 .name = "Automatic Gain",
544 .minimum = 0,
545 .maximum = 1,
546 .step = 1,
547 .default_value = 1,
548 }, {
549 .id = V4L2_CID_EXPOSURE_AUTO,
550 .type = V4L2_CTRL_TYPE_BOOLEAN,
551 .name = "Automatic Exposure",
552 .minimum = 0,
553 .maximum = 1,
554 .step = 1,
555 .default_value = 1,
556 }
557};
558
559static struct soc_camera_ops mt9v022_ops = {
560 .set_bus_param = mt9v022_set_bus_param,
561 .query_bus_param = mt9v022_query_bus_param,
562 .controls = mt9v022_controls,
563 .num_controls = ARRAY_SIZE(mt9v022_controls),
564};
565
566static int mt9v022_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
567{
568 struct i2c_client *client = v4l2_get_subdevdata(sd);
569 const struct v4l2_queryctrl *qctrl;
570 unsigned long range;
571 int data;
572
573 qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id);
574
575 switch (ctrl->id) {
576 case V4L2_CID_VFLIP:
577 data = reg_read(client, MT9V022_READ_MODE);
578 if (data < 0)
579 return -EIO;
580 ctrl->value = !!(data & 0x10);
581 break;
582 case V4L2_CID_HFLIP:
583 data = reg_read(client, MT9V022_READ_MODE);
584 if (data < 0)
585 return -EIO;
586 ctrl->value = !!(data & 0x20);
587 break;
588 case V4L2_CID_EXPOSURE_AUTO:
589 data = reg_read(client, MT9V022_AEC_AGC_ENABLE);
590 if (data < 0)
591 return -EIO;
592 ctrl->value = !!(data & 0x1);
593 break;
594 case V4L2_CID_AUTOGAIN:
595 data = reg_read(client, MT9V022_AEC_AGC_ENABLE);
596 if (data < 0)
597 return -EIO;
598 ctrl->value = !!(data & 0x2);
599 break;
600 case V4L2_CID_GAIN:
601 data = reg_read(client, MT9V022_ANALOG_GAIN);
602 if (data < 0)
603 return -EIO;
604
605 range = qctrl->maximum - qctrl->minimum;
606 ctrl->value = ((data - 16) * range + 24) / 48 + qctrl->minimum;
607
608 break;
609 case V4L2_CID_EXPOSURE:
610 data = reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH);
611 if (data < 0)
612 return -EIO;
613
614 range = qctrl->maximum - qctrl->minimum;
615 ctrl->value = ((data - 1) * range + 239) / 479 + qctrl->minimum;
616
617 break;
618 }
619 return 0;
620}
621
622static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
623{
624 int data;
625 struct i2c_client *client = v4l2_get_subdevdata(sd);
626 const struct v4l2_queryctrl *qctrl;
627
628 qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id);
629 if (!qctrl)
630 return -EINVAL;
631
632 switch (ctrl->id) {
633 case V4L2_CID_VFLIP:
634 if (ctrl->value)
635 data = reg_set(client, MT9V022_READ_MODE, 0x10);
636 else
637 data = reg_clear(client, MT9V022_READ_MODE, 0x10);
638 if (data < 0)
639 return -EIO;
640 break;
641 case V4L2_CID_HFLIP:
642 if (ctrl->value)
643 data = reg_set(client, MT9V022_READ_MODE, 0x20);
644 else
645 data = reg_clear(client, MT9V022_READ_MODE, 0x20);
646 if (data < 0)
647 return -EIO;
648 break;
649 case V4L2_CID_GAIN:
650
651 if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
652 return -EINVAL;
653 else {
654 unsigned long range = qctrl->maximum - qctrl->minimum;
655
656 unsigned long gain = ((ctrl->value - qctrl->minimum) *
657 48 + range / 2) / range + 16;
658 if (gain >= 32)
659 gain &= ~1;
660
661
662
663
664
665 if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0)
666 return -EIO;
667
668 dev_dbg(&client->dev, "Setting gain from %d to %lu\n",
669 reg_read(client, MT9V022_ANALOG_GAIN), gain);
670 if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0)
671 return -EIO;
672 }
673 break;
674 case V4L2_CID_EXPOSURE:
675
676 if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
677 return -EINVAL;
678 else {
679 unsigned long range = qctrl->maximum - qctrl->minimum;
680 unsigned long shutter = ((ctrl->value - qctrl->minimum) *
681 479 + range / 2) / range + 1;
682
683
684
685
686
687 if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0)
688 return -EIO;
689
690 dev_dbg(&client->dev, "Shutter width from %d to %lu\n",
691 reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH),
692 shutter);
693 if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH,
694 shutter) < 0)
695 return -EIO;
696 }
697 break;
698 case V4L2_CID_AUTOGAIN:
699 if (ctrl->value)
700 data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2);
701 else
702 data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2);
703 if (data < 0)
704 return -EIO;
705 break;
706 case V4L2_CID_EXPOSURE_AUTO:
707 if (ctrl->value)
708 data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1);
709 else
710 data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1);
711 if (data < 0)
712 return -EIO;
713 break;
714 }
715 return 0;
716}
717
718
719
720
721
722static int mt9v022_video_probe(struct soc_camera_device *icd,
723 struct i2c_client *client)
724{
725 struct mt9v022 *mt9v022 = to_mt9v022(client);
726 struct soc_camera_link *icl = to_soc_camera_link(icd);
727 s32 data;
728 int ret;
729 unsigned long flags;
730
731 if (!icd->dev.parent ||
732 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
733 return -ENODEV;
734
735
736 data = reg_read(client, MT9V022_CHIP_VERSION);
737
738
739 if (data != 0x1311 && data != 0x1313) {
740 ret = -ENODEV;
741 dev_info(&client->dev, "No MT9V022 found, ID register 0x%x\n",
742 data);
743 goto ei2c;
744 }
745
746
747 ret = reg_write(client, MT9V022_RESET, 1);
748 if (ret < 0)
749 goto ei2c;
750
751 udelay(200);
752 if (reg_read(client, MT9V022_RESET)) {
753 dev_err(&client->dev, "Resetting MT9V022 failed!\n");
754 if (ret > 0)
755 ret = -EIO;
756 goto ei2c;
757 }
758
759
760 if (sensor_type && (!strcmp("colour", sensor_type) ||
761 !strcmp("color", sensor_type))) {
762 ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11);
763 mt9v022->model = V4L2_IDENT_MT9V022IX7ATC;
764 mt9v022->fmts = mt9v022_colour_fmts;
765 } else {
766 ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11);
767 mt9v022->model = V4L2_IDENT_MT9V022IX7ATM;
768 mt9v022->fmts = mt9v022_monochrome_fmts;
769 }
770
771 if (ret < 0)
772 goto ei2c;
773
774 mt9v022->num_fmts = 0;
775
776
777
778
779
780
781 if (icl->query_bus_param)
782 flags = icl->query_bus_param(icl);
783 else
784 flags = SOCAM_DATAWIDTH_10;
785
786 if (flags & SOCAM_DATAWIDTH_10)
787 mt9v022->num_fmts++;
788 else
789 mt9v022->fmts++;
790
791 if (flags & SOCAM_DATAWIDTH_8)
792 mt9v022->num_fmts++;
793
794 mt9v022->fmt = &mt9v022->fmts[0];
795
796 dev_info(&client->dev, "Detected a MT9V022 chip ID %x, %s sensor\n",
797 data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ?
798 "monochrome" : "colour");
799
800 ret = mt9v022_init(client);
801 if (ret < 0)
802 dev_err(&client->dev, "Failed to initialise the camera\n");
803
804ei2c:
805 return ret;
806}
807
808static void mt9v022_video_remove(struct soc_camera_device *icd)
809{
810 struct soc_camera_link *icl = to_soc_camera_link(icd);
811
812 dev_dbg(&icd->dev, "Video removed: %p, %p\n",
813 icd->dev.parent, icd->vdev);
814 if (icl->free_bus)
815 icl->free_bus(icl);
816}
817
818static int mt9v022_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
819{
820 struct i2c_client *client = v4l2_get_subdevdata(sd);
821 struct mt9v022 *mt9v022 = to_mt9v022(client);
822
823 *lines = mt9v022->y_skip_top;
824
825 return 0;
826}
827
828static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = {
829 .g_ctrl = mt9v022_g_ctrl,
830 .s_ctrl = mt9v022_s_ctrl,
831 .g_chip_ident = mt9v022_g_chip_ident,
832#ifdef CONFIG_VIDEO_ADV_DEBUG
833 .g_register = mt9v022_g_register,
834 .s_register = mt9v022_s_register,
835#endif
836};
837
838static int mt9v022_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
839 enum v4l2_mbus_pixelcode *code)
840{
841 struct i2c_client *client = v4l2_get_subdevdata(sd);
842 struct mt9v022 *mt9v022 = to_mt9v022(client);
843
844 if (index >= mt9v022->num_fmts)
845 return -EINVAL;
846
847 *code = mt9v022->fmts[index].code;
848 return 0;
849}
850
851static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = {
852 .s_stream = mt9v022_s_stream,
853 .s_mbus_fmt = mt9v022_s_fmt,
854 .g_mbus_fmt = mt9v022_g_fmt,
855 .try_mbus_fmt = mt9v022_try_fmt,
856 .s_crop = mt9v022_s_crop,
857 .g_crop = mt9v022_g_crop,
858 .cropcap = mt9v022_cropcap,
859 .enum_mbus_fmt = mt9v022_enum_fmt,
860};
861
862static struct v4l2_subdev_sensor_ops mt9v022_subdev_sensor_ops = {
863 .g_skip_top_lines = mt9v022_g_skip_top_lines,
864};
865
866static struct v4l2_subdev_ops mt9v022_subdev_ops = {
867 .core = &mt9v022_subdev_core_ops,
868 .video = &mt9v022_subdev_video_ops,
869 .sensor = &mt9v022_subdev_sensor_ops,
870};
871
872static int mt9v022_probe(struct i2c_client *client,
873 const struct i2c_device_id *did)
874{
875 struct mt9v022 *mt9v022;
876 struct soc_camera_device *icd = client->dev.platform_data;
877 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
878 struct soc_camera_link *icl;
879 int ret;
880
881 if (!icd) {
882 dev_err(&client->dev, "MT9V022: missing soc-camera data!\n");
883 return -EINVAL;
884 }
885
886 icl = to_soc_camera_link(icd);
887 if (!icl) {
888 dev_err(&client->dev, "MT9V022 driver needs platform data\n");
889 return -EINVAL;
890 }
891
892 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
893 dev_warn(&adapter->dev,
894 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
895 return -EIO;
896 }
897
898 mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL);
899 if (!mt9v022)
900 return -ENOMEM;
901
902 v4l2_i2c_subdev_init(&mt9v022->subdev, client, &mt9v022_subdev_ops);
903
904 mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT;
905
906 icd->ops = &mt9v022_ops;
907
908
909
910
911 mt9v022->y_skip_top = 1;
912 mt9v022->rect.left = MT9V022_COLUMN_SKIP;
913 mt9v022->rect.top = MT9V022_ROW_SKIP;
914 mt9v022->rect.width = MT9V022_MAX_WIDTH;
915 mt9v022->rect.height = MT9V022_MAX_HEIGHT;
916
917 ret = mt9v022_video_probe(icd, client);
918 if (ret) {
919 icd->ops = NULL;
920 kfree(mt9v022);
921 }
922
923 return ret;
924}
925
926static int mt9v022_remove(struct i2c_client *client)
927{
928 struct mt9v022 *mt9v022 = to_mt9v022(client);
929 struct soc_camera_device *icd = client->dev.platform_data;
930
931 icd->ops = NULL;
932 mt9v022_video_remove(icd);
933 kfree(mt9v022);
934
935 return 0;
936}
937static const struct i2c_device_id mt9v022_id[] = {
938 { "mt9v022", 0 },
939 { }
940};
941MODULE_DEVICE_TABLE(i2c, mt9v022_id);
942
943static struct i2c_driver mt9v022_i2c_driver = {
944 .driver = {
945 .name = "mt9v022",
946 },
947 .probe = mt9v022_probe,
948 .remove = mt9v022_remove,
949 .id_table = mt9v022_id,
950};
951
952static int __init mt9v022_mod_init(void)
953{
954 return i2c_add_driver(&mt9v022_i2c_driver);
955}
956
957static void __exit mt9v022_mod_exit(void)
958{
959 i2c_del_driver(&mt9v022_i2c_driver);
960}
961
962module_init(mt9v022_mod_init);
963module_exit(mt9v022_mod_exit);
964
965MODULE_DESCRIPTION("Micron MT9V022 Camera driver");
966MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
967MODULE_LICENSE("GPL");
968
