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11#include <linux/videodev2.h>
12#include <linux/slab.h>
13#include <linux/i2c.h>
14#include <linux/log2.h>
15
16#include <media/v4l2-subdev.h>
17#include <media/v4l2-chip-ident.h>
18#include <media/soc_camera.h>
19
20
21
22
23
24
25#define MT9M001_CHIP_VERSION 0x00
26#define MT9M001_ROW_START 0x01
27#define MT9M001_COLUMN_START 0x02
28#define MT9M001_WINDOW_HEIGHT 0x03
29#define MT9M001_WINDOW_WIDTH 0x04
30#define MT9M001_HORIZONTAL_BLANKING 0x05
31#define MT9M001_VERTICAL_BLANKING 0x06
32#define MT9M001_OUTPUT_CONTROL 0x07
33#define MT9M001_SHUTTER_WIDTH 0x09
34#define MT9M001_FRAME_RESTART 0x0b
35#define MT9M001_SHUTTER_DELAY 0x0c
36#define MT9M001_RESET 0x0d
37#define MT9M001_READ_OPTIONS1 0x1e
38#define MT9M001_READ_OPTIONS2 0x20
39#define MT9M001_GLOBAL_GAIN 0x35
40#define MT9M001_CHIP_ENABLE 0xF1
41
42#define MT9M001_MAX_WIDTH 1280
43#define MT9M001_MAX_HEIGHT 1024
44#define MT9M001_MIN_WIDTH 48
45#define MT9M001_MIN_HEIGHT 32
46#define MT9M001_COLUMN_SKIP 20
47#define MT9M001_ROW_SKIP 12
48
49static const struct soc_camera_data_format mt9m001_colour_formats[] = {
50
51
52 {
53 .name = "Bayer (sRGB) 10 bit",
54 .depth = 10,
55 .fourcc = V4L2_PIX_FMT_SBGGR16,
56 .colorspace = V4L2_COLORSPACE_SRGB,
57 }, {
58 .name = "Bayer (sRGB) 8 bit",
59 .depth = 8,
60 .fourcc = V4L2_PIX_FMT_SBGGR8,
61 .colorspace = V4L2_COLORSPACE_SRGB,
62 }
63};
64
65static const struct soc_camera_data_format mt9m001_monochrome_formats[] = {
66
67 {
68 .name = "Monochrome 10 bit",
69 .depth = 10,
70 .fourcc = V4L2_PIX_FMT_Y16,
71 }, {
72 .name = "Monochrome 8 bit",
73 .depth = 8,
74 .fourcc = V4L2_PIX_FMT_GREY,
75 },
76};
77
78struct mt9m001 {
79 struct v4l2_subdev subdev;
80 struct v4l2_rect rect;
81 __u32 fourcc;
82 int model;
83 unsigned int gain;
84 unsigned int exposure;
85 unsigned char autoexposure;
86};
87
88static struct mt9m001 *to_mt9m001(const struct i2c_client *client)
89{
90 return container_of(i2c_get_clientdata(client), struct mt9m001, subdev);
91}
92
93static int reg_read(struct i2c_client *client, const u8 reg)
94{
95 s32 data = i2c_smbus_read_word_data(client, reg);
96 return data < 0 ? data : swab16(data);
97}
98
99static int reg_write(struct i2c_client *client, const u8 reg,
100 const u16 data)
101{
102 return i2c_smbus_write_word_data(client, reg, swab16(data));
103}
104
105static int reg_set(struct i2c_client *client, const u8 reg,
106 const u16 data)
107{
108 int ret;
109
110 ret = reg_read(client, reg);
111 if (ret < 0)
112 return ret;
113 return reg_write(client, reg, ret | data);
114}
115
116static int reg_clear(struct i2c_client *client, const u8 reg,
117 const u16 data)
118{
119 int ret;
120
121 ret = reg_read(client, reg);
122 if (ret < 0)
123 return ret;
124 return reg_write(client, reg, ret & ~data);
125}
126
127static int mt9m001_init(struct i2c_client *client)
128{
129 int ret;
130
131 dev_dbg(&client->dev, "%s\n", __func__);
132
133
134
135
136
137 ret = reg_write(client, MT9M001_RESET, 1);
138 if (!ret)
139 ret = reg_write(client, MT9M001_RESET, 0);
140
141
142 if (!ret)
143 ret = reg_write(client, MT9M001_OUTPUT_CONTROL, 0);
144
145 return ret;
146}
147
148static int mt9m001_s_stream(struct v4l2_subdev *sd, int enable)
149{
150 struct i2c_client *client = sd->priv;
151
152
153 if (reg_write(client, MT9M001_OUTPUT_CONTROL, enable ? 2 : 0) < 0)
154 return -EIO;
155 return 0;
156}
157
158static int mt9m001_set_bus_param(struct soc_camera_device *icd,
159 unsigned long flags)
160{
161 struct soc_camera_link *icl = to_soc_camera_link(icd);
162 unsigned long width_flag = flags & SOCAM_DATAWIDTH_MASK;
163
164
165 if (!is_power_of_2(width_flag))
166 return -EINVAL;
167
168 if (icl->set_bus_param)
169 return icl->set_bus_param(icl, width_flag);
170
171
172
173
174
175 if (width_flag == SOCAM_DATAWIDTH_10)
176 return 0;
177
178 return -EINVAL;
179}
180
181static unsigned long mt9m001_query_bus_param(struct soc_camera_device *icd)
182{
183 struct soc_camera_link *icl = to_soc_camera_link(icd);
184
185 unsigned long flags = SOCAM_PCLK_SAMPLE_FALLING |
186 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
187 SOCAM_DATA_ACTIVE_HIGH | SOCAM_MASTER;
188
189 if (icl->query_bus_param)
190 flags |= icl->query_bus_param(icl) & SOCAM_DATAWIDTH_MASK;
191 else
192 flags |= SOCAM_DATAWIDTH_10;
193
194 return soc_camera_apply_sensor_flags(icl, flags);
195}
196
197static int mt9m001_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
198{
199 struct i2c_client *client = sd->priv;
200 struct mt9m001 *mt9m001 = to_mt9m001(client);
201 struct v4l2_rect rect = a->c;
202 struct soc_camera_device *icd = client->dev.platform_data;
203 int ret;
204 const u16 hblank = 9, vblank = 25;
205 unsigned int total_h;
206
207 if (mt9m001->fourcc == V4L2_PIX_FMT_SBGGR8 ||
208 mt9m001->fourcc == V4L2_PIX_FMT_SBGGR16)
209
210
211
212
213 rect.height = ALIGN(rect.height, 2);
214
215
216 rect.width = ALIGN(rect.width, 2);
217 rect.left = ALIGN(rect.left, 2);
218
219 soc_camera_limit_side(&rect.left, &rect.width,
220 MT9M001_COLUMN_SKIP, MT9M001_MIN_WIDTH, MT9M001_MAX_WIDTH);
221
222 soc_camera_limit_side(&rect.top, &rect.height,
223 MT9M001_ROW_SKIP, MT9M001_MIN_HEIGHT, MT9M001_MAX_HEIGHT);
224
225 total_h = rect.height + icd->y_skip_top + vblank;
226
227
228 ret = reg_write(client, MT9M001_HORIZONTAL_BLANKING, hblank);
229 if (!ret)
230 ret = reg_write(client, MT9M001_VERTICAL_BLANKING, vblank);
231
232
233
234 if (!ret)
235 ret = reg_write(client, MT9M001_COLUMN_START, rect.left);
236 if (!ret)
237 ret = reg_write(client, MT9M001_ROW_START, rect.top);
238 if (!ret)
239 ret = reg_write(client, MT9M001_WINDOW_WIDTH, rect.width - 1);
240 if (!ret)
241 ret = reg_write(client, MT9M001_WINDOW_HEIGHT,
242 rect.height + icd->y_skip_top - 1);
243 if (!ret && mt9m001->autoexposure) {
244 ret = reg_write(client, MT9M001_SHUTTER_WIDTH, total_h);
245 if (!ret) {
246 const struct v4l2_queryctrl *qctrl =
247 soc_camera_find_qctrl(icd->ops,
248 V4L2_CID_EXPOSURE);
249 mt9m001->exposure = (524 + (total_h - 1) *
250 (qctrl->maximum - qctrl->minimum)) /
251 1048 + qctrl->minimum;
252 }
253 }
254
255 if (!ret)
256 mt9m001->rect = rect;
257
258 return ret;
259}
260
261static int mt9m001_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
262{
263 struct i2c_client *client = sd->priv;
264 struct mt9m001 *mt9m001 = to_mt9m001(client);
265
266 a->c = mt9m001->rect;
267 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
268
269 return 0;
270}
271
272static int mt9m001_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
273{
274 a->bounds.left = MT9M001_COLUMN_SKIP;
275 a->bounds.top = MT9M001_ROW_SKIP;
276 a->bounds.width = MT9M001_MAX_WIDTH;
277 a->bounds.height = MT9M001_MAX_HEIGHT;
278 a->defrect = a->bounds;
279 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
280 a->pixelaspect.numerator = 1;
281 a->pixelaspect.denominator = 1;
282
283 return 0;
284}
285
286static int mt9m001_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
287{
288 struct i2c_client *client = sd->priv;
289 struct mt9m001 *mt9m001 = to_mt9m001(client);
290 struct v4l2_pix_format *pix = &f->fmt.pix;
291
292 pix->width = mt9m001->rect.width;
293 pix->height = mt9m001->rect.height;
294 pix->pixelformat = mt9m001->fourcc;
295 pix->field = V4L2_FIELD_NONE;
296 pix->colorspace = V4L2_COLORSPACE_SRGB;
297
298 return 0;
299}
300
301static int mt9m001_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
302{
303 struct i2c_client *client = sd->priv;
304 struct mt9m001 *mt9m001 = to_mt9m001(client);
305 struct v4l2_pix_format *pix = &f->fmt.pix;
306 struct v4l2_crop a = {
307 .c = {
308 .left = mt9m001->rect.left,
309 .top = mt9m001->rect.top,
310 .width = pix->width,
311 .height = pix->height,
312 },
313 };
314 int ret;
315
316
317 ret = mt9m001_s_crop(sd, &a);
318 if (!ret) {
319 pix->width = mt9m001->rect.width;
320 pix->height = mt9m001->rect.height;
321 mt9m001->fourcc = pix->pixelformat;
322 }
323
324 return ret;
325}
326
327static int mt9m001_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
328{
329 struct i2c_client *client = sd->priv;
330 struct soc_camera_device *icd = client->dev.platform_data;
331 struct v4l2_pix_format *pix = &f->fmt.pix;
332
333 v4l_bound_align_image(&pix->width, MT9M001_MIN_WIDTH,
334 MT9M001_MAX_WIDTH, 1,
335 &pix->height, MT9M001_MIN_HEIGHT + icd->y_skip_top,
336 MT9M001_MAX_HEIGHT + icd->y_skip_top, 0, 0);
337
338 if (pix->pixelformat == V4L2_PIX_FMT_SBGGR8 ||
339 pix->pixelformat == V4L2_PIX_FMT_SBGGR16)
340 pix->height = ALIGN(pix->height - 1, 2);
341
342 return 0;
343}
344
345static int mt9m001_g_chip_ident(struct v4l2_subdev *sd,
346 struct v4l2_dbg_chip_ident *id)
347{
348 struct i2c_client *client = sd->priv;
349 struct mt9m001 *mt9m001 = to_mt9m001(client);
350
351 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
352 return -EINVAL;
353
354 if (id->match.addr != client->addr)
355 return -ENODEV;
356
357 id->ident = mt9m001->model;
358 id->revision = 0;
359
360 return 0;
361}
362
363#ifdef CONFIG_VIDEO_ADV_DEBUG
364static int mt9m001_g_register(struct v4l2_subdev *sd,
365 struct v4l2_dbg_register *reg)
366{
367 struct i2c_client *client = sd->priv;
368
369 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
370 return -EINVAL;
371
372 if (reg->match.addr != client->addr)
373 return -ENODEV;
374
375 reg->size = 2;
376 reg->val = reg_read(client, reg->reg);
377
378 if (reg->val > 0xffff)
379 return -EIO;
380
381 return 0;
382}
383
384static int mt9m001_s_register(struct v4l2_subdev *sd,
385 struct v4l2_dbg_register *reg)
386{
387 struct i2c_client *client = sd->priv;
388
389 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
390 return -EINVAL;
391
392 if (reg->match.addr != client->addr)
393 return -ENODEV;
394
395 if (reg_write(client, reg->reg, reg->val) < 0)
396 return -EIO;
397
398 return 0;
399}
400#endif
401
402static const struct v4l2_queryctrl mt9m001_controls[] = {
403 {
404 .id = V4L2_CID_VFLIP,
405 .type = V4L2_CTRL_TYPE_BOOLEAN,
406 .name = "Flip Vertically",
407 .minimum = 0,
408 .maximum = 1,
409 .step = 1,
410 .default_value = 0,
411 }, {
412 .id = V4L2_CID_GAIN,
413 .type = V4L2_CTRL_TYPE_INTEGER,
414 .name = "Gain",
415 .minimum = 0,
416 .maximum = 127,
417 .step = 1,
418 .default_value = 64,
419 .flags = V4L2_CTRL_FLAG_SLIDER,
420 }, {
421 .id = V4L2_CID_EXPOSURE,
422 .type = V4L2_CTRL_TYPE_INTEGER,
423 .name = "Exposure",
424 .minimum = 1,
425 .maximum = 255,
426 .step = 1,
427 .default_value = 255,
428 .flags = V4L2_CTRL_FLAG_SLIDER,
429 }, {
430 .id = V4L2_CID_EXPOSURE_AUTO,
431 .type = V4L2_CTRL_TYPE_BOOLEAN,
432 .name = "Automatic Exposure",
433 .minimum = 0,
434 .maximum = 1,
435 .step = 1,
436 .default_value = 1,
437 }
438};
439
440static struct soc_camera_ops mt9m001_ops = {
441 .set_bus_param = mt9m001_set_bus_param,
442 .query_bus_param = mt9m001_query_bus_param,
443 .controls = mt9m001_controls,
444 .num_controls = ARRAY_SIZE(mt9m001_controls),
445};
446
447static int mt9m001_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
448{
449 struct i2c_client *client = sd->priv;
450 struct mt9m001 *mt9m001 = to_mt9m001(client);
451 int data;
452
453 switch (ctrl->id) {
454 case V4L2_CID_VFLIP:
455 data = reg_read(client, MT9M001_READ_OPTIONS2);
456 if (data < 0)
457 return -EIO;
458 ctrl->value = !!(data & 0x8000);
459 break;
460 case V4L2_CID_EXPOSURE_AUTO:
461 ctrl->value = mt9m001->autoexposure;
462 break;
463 case V4L2_CID_GAIN:
464 ctrl->value = mt9m001->gain;
465 break;
466 case V4L2_CID_EXPOSURE:
467 ctrl->value = mt9m001->exposure;
468 break;
469 }
470 return 0;
471}
472
473static int mt9m001_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
474{
475 struct i2c_client *client = sd->priv;
476 struct mt9m001 *mt9m001 = to_mt9m001(client);
477 struct soc_camera_device *icd = client->dev.platform_data;
478 const struct v4l2_queryctrl *qctrl;
479 int data;
480
481 qctrl = soc_camera_find_qctrl(&mt9m001_ops, ctrl->id);
482
483 if (!qctrl)
484 return -EINVAL;
485
486 switch (ctrl->id) {
487 case V4L2_CID_VFLIP:
488 if (ctrl->value)
489 data = reg_set(client, MT9M001_READ_OPTIONS2, 0x8000);
490 else
491 data = reg_clear(client, MT9M001_READ_OPTIONS2, 0x8000);
492 if (data < 0)
493 return -EIO;
494 break;
495 case V4L2_CID_GAIN:
496 if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
497 return -EINVAL;
498
499 if (ctrl->value <= qctrl->default_value) {
500
501 unsigned long range = qctrl->default_value - qctrl->minimum;
502 data = ((ctrl->value - qctrl->minimum) * 8 + range / 2) / range;
503
504 dev_dbg(&client->dev, "Setting gain %d\n", data);
505 data = reg_write(client, MT9M001_GLOBAL_GAIN, data);
506 if (data < 0)
507 return -EIO;
508 } else {
509
510
511 unsigned long range = qctrl->maximum - qctrl->default_value - 1;
512 unsigned long gain = ((ctrl->value - qctrl->default_value - 1) *
513 111 + range / 2) / range + 9;
514
515 if (gain <= 32)
516 data = gain;
517 else if (gain <= 64)
518 data = ((gain - 32) * 16 + 16) / 32 + 80;
519 else
520 data = ((gain - 64) * 7 + 28) / 56 + 96;
521
522 dev_dbg(&client->dev, "Setting gain from %d to %d\n",
523 reg_read(client, MT9M001_GLOBAL_GAIN), data);
524 data = reg_write(client, MT9M001_GLOBAL_GAIN, data);
525 if (data < 0)
526 return -EIO;
527 }
528
529
530 mt9m001->gain = ctrl->value;
531 break;
532 case V4L2_CID_EXPOSURE:
533
534 if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
535 return -EINVAL;
536 else {
537 unsigned long range = qctrl->maximum - qctrl->minimum;
538 unsigned long shutter = ((ctrl->value - qctrl->minimum) * 1048 +
539 range / 2) / range + 1;
540
541 dev_dbg(&client->dev,
542 "Setting shutter width from %d to %lu\n",
543 reg_read(client, MT9M001_SHUTTER_WIDTH),
544 shutter);
545 if (reg_write(client, MT9M001_SHUTTER_WIDTH, shutter) < 0)
546 return -EIO;
547 mt9m001->exposure = ctrl->value;
548 mt9m001->autoexposure = 0;
549 }
550 break;
551 case V4L2_CID_EXPOSURE_AUTO:
552 if (ctrl->value) {
553 const u16 vblank = 25;
554 unsigned int total_h = mt9m001->rect.height +
555 icd->y_skip_top + vblank;
556 if (reg_write(client, MT9M001_SHUTTER_WIDTH,
557 total_h) < 0)
558 return -EIO;
559 qctrl = soc_camera_find_qctrl(icd->ops, V4L2_CID_EXPOSURE);
560 mt9m001->exposure = (524 + (total_h - 1) *
561 (qctrl->maximum - qctrl->minimum)) /
562 1048 + qctrl->minimum;
563 mt9m001->autoexposure = 1;
564 } else
565 mt9m001->autoexposure = 0;
566 break;
567 }
568 return 0;
569}
570
571
572
573static int mt9m001_video_probe(struct soc_camera_device *icd,
574 struct i2c_client *client)
575{
576 struct mt9m001 *mt9m001 = to_mt9m001(client);
577 struct soc_camera_link *icl = to_soc_camera_link(icd);
578 s32 data;
579 unsigned long flags;
580 int ret;
581
582
583
584 if (!icd->dev.parent ||
585 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
586 return -ENODEV;
587
588
589 data = reg_write(client, MT9M001_CHIP_ENABLE, 1);
590 dev_dbg(&client->dev, "write: %d\n", data);
591
592
593 data = reg_read(client, MT9M001_CHIP_VERSION);
594
595
596 switch (data) {
597 case 0x8411:
598 case 0x8421:
599 mt9m001->model = V4L2_IDENT_MT9M001C12ST;
600 icd->formats = mt9m001_colour_formats;
601 break;
602 case 0x8431:
603 mt9m001->model = V4L2_IDENT_MT9M001C12STM;
604 icd->formats = mt9m001_monochrome_formats;
605 break;
606 default:
607 dev_err(&client->dev,
608 "No MT9M001 chip detected, register read %x\n", data);
609 return -ENODEV;
610 }
611
612 icd->num_formats = 0;
613
614
615
616
617
618
619 if (icl->query_bus_param)
620 flags = icl->query_bus_param(icl);
621 else
622 flags = SOCAM_DATAWIDTH_10;
623
624 if (flags & SOCAM_DATAWIDTH_10)
625 icd->num_formats++;
626 else
627 icd->formats++;
628
629 if (flags & SOCAM_DATAWIDTH_8)
630 icd->num_formats++;
631
632 mt9m001->fourcc = icd->formats->fourcc;
633
634 dev_info(&client->dev, "Detected a MT9M001 chip ID %x (%s)\n", data,
635 data == 0x8431 ? "C12STM" : "C12ST");
636
637 ret = mt9m001_init(client);
638 if (ret < 0)
639 dev_err(&client->dev, "Failed to initialise the camera\n");
640
641
642 mt9m001->gain = 64;
643 mt9m001->exposure = 255;
644
645 return ret;
646}
647
648static void mt9m001_video_remove(struct soc_camera_device *icd)
649{
650 struct soc_camera_link *icl = to_soc_camera_link(icd);
651
652 dev_dbg(&icd->dev, "Video removed: %p, %p\n",
653 icd->dev.parent, icd->vdev);
654 if (icl->free_bus)
655 icl->free_bus(icl);
656}
657
658static struct v4l2_subdev_core_ops mt9m001_subdev_core_ops = {
659 .g_ctrl = mt9m001_g_ctrl,
660 .s_ctrl = mt9m001_s_ctrl,
661 .g_chip_ident = mt9m001_g_chip_ident,
662#ifdef CONFIG_VIDEO_ADV_DEBUG
663 .g_register = mt9m001_g_register,
664 .s_register = mt9m001_s_register,
665#endif
666};
667
668static struct v4l2_subdev_video_ops mt9m001_subdev_video_ops = {
669 .s_stream = mt9m001_s_stream,
670 .s_fmt = mt9m001_s_fmt,
671 .g_fmt = mt9m001_g_fmt,
672 .try_fmt = mt9m001_try_fmt,
673 .s_crop = mt9m001_s_crop,
674 .g_crop = mt9m001_g_crop,
675 .cropcap = mt9m001_cropcap,
676};
677
678static struct v4l2_subdev_ops mt9m001_subdev_ops = {
679 .core = &mt9m001_subdev_core_ops,
680 .video = &mt9m001_subdev_video_ops,
681};
682
683static int mt9m001_probe(struct i2c_client *client,
684 const struct i2c_device_id *did)
685{
686 struct mt9m001 *mt9m001;
687 struct soc_camera_device *icd = client->dev.platform_data;
688 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
689 struct soc_camera_link *icl;
690 int ret;
691
692 if (!icd) {
693 dev_err(&client->dev, "MT9M001: missing soc-camera data!\n");
694 return -EINVAL;
695 }
696
697 icl = to_soc_camera_link(icd);
698 if (!icl) {
699 dev_err(&client->dev, "MT9M001 driver needs platform data\n");
700 return -EINVAL;
701 }
702
703 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
704 dev_warn(&adapter->dev,
705 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
706 return -EIO;
707 }
708
709 mt9m001 = kzalloc(sizeof(struct mt9m001), GFP_KERNEL);
710 if (!mt9m001)
711 return -ENOMEM;
712
713 v4l2_i2c_subdev_init(&mt9m001->subdev, client, &mt9m001_subdev_ops);
714
715
716 icd->ops = &mt9m001_ops;
717 icd->y_skip_top = 0;
718
719 mt9m001->rect.left = MT9M001_COLUMN_SKIP;
720 mt9m001->rect.top = MT9M001_ROW_SKIP;
721 mt9m001->rect.width = MT9M001_MAX_WIDTH;
722 mt9m001->rect.height = MT9M001_MAX_HEIGHT;
723
724
725
726 mt9m001->autoexposure = 1;
727
728 ret = mt9m001_video_probe(icd, client);
729 if (ret) {
730 icd->ops = NULL;
731 i2c_set_clientdata(client, NULL);
732 kfree(mt9m001);
733 }
734
735 return ret;
736}
737
738static int mt9m001_remove(struct i2c_client *client)
739{
740 struct mt9m001 *mt9m001 = to_mt9m001(client);
741 struct soc_camera_device *icd = client->dev.platform_data;
742
743 icd->ops = NULL;
744 mt9m001_video_remove(icd);
745 i2c_set_clientdata(client, NULL);
746 client->driver = NULL;
747 kfree(mt9m001);
748
749 return 0;
750}
751
752static const struct i2c_device_id mt9m001_id[] = {
753 { "mt9m001", 0 },
754 { }
755};
756MODULE_DEVICE_TABLE(i2c, mt9m001_id);
757
758static struct i2c_driver mt9m001_i2c_driver = {
759 .driver = {
760 .name = "mt9m001",
761 },
762 .probe = mt9m001_probe,
763 .remove = mt9m001_remove,
764 .id_table = mt9m001_id,
765};
766
767static int __init mt9m001_mod_init(void)
768{
769 return i2c_add_driver(&mt9m001_i2c_driver);
770}
771
772static void __exit mt9m001_mod_exit(void)
773{
774 i2c_del_driver(&mt9m001_i2c_driver);
775}
776
777module_init(mt9m001_mod_init);
778module_exit(mt9m001_mod_exit);
779
780MODULE_DESCRIPTION("Micron MT9M001 Camera driver");
781MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
782MODULE_LICENSE("GPL");
783
