2 * Driver for MT9V022 CMOS Image Sensor from Micron
4 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
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 #include <linux/gpio.h>
18 #include <media/v4l2-common.h>
19 #include <media/v4l2-chip-ident.h>
20 #include <media/soc_camera.h>
22 /* mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c
23 * The platform has to define i2c_board_info
24 * and call i2c_register_board_info() */
26 static char *sensor_type;
27 module_param(sensor_type, charp, S_IRUGO);
28 MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\"");
30 /* mt9v022 selected register addresses */
31 #define MT9V022_CHIP_VERSION 0x00
32 #define MT9V022_COLUMN_START 0x01
33 #define MT9V022_ROW_START 0x02
34 #define MT9V022_WINDOW_HEIGHT 0x03
35 #define MT9V022_WINDOW_WIDTH 0x04
36 #define MT9V022_HORIZONTAL_BLANKING 0x05
37 #define MT9V022_VERTICAL_BLANKING 0x06
38 #define MT9V022_CHIP_CONTROL 0x07
39 #define MT9V022_SHUTTER_WIDTH1 0x08
40 #define MT9V022_SHUTTER_WIDTH2 0x09
41 #define MT9V022_SHUTTER_WIDTH_CTRL 0x0a
42 #define MT9V022_TOTAL_SHUTTER_WIDTH 0x0b
43 #define MT9V022_RESET 0x0c
44 #define MT9V022_READ_MODE 0x0d
45 #define MT9V022_MONITOR_MODE 0x0e
46 #define MT9V022_PIXEL_OPERATION_MODE 0x0f
47 #define MT9V022_LED_OUT_CONTROL 0x1b
48 #define MT9V022_ADC_MODE_CONTROL 0x1c
49 #define MT9V022_ANALOG_GAIN 0x34
50 #define MT9V022_BLACK_LEVEL_CALIB_CTRL 0x47
51 #define MT9V022_PIXCLK_FV_LV 0x74
52 #define MT9V022_DIGITAL_TEST_PATTERN 0x7f
53 #define MT9V022_AEC_AGC_ENABLE 0xAF
54 #define MT9V022_MAX_TOTAL_SHUTTER_WIDTH 0xBD
56 /* Progressive scan, master, defaults */
57 #define MT9V022_CHIP_CONTROL_DEFAULT 0x188
59 static const struct soc_camera_data_format mt9v022_colour_formats[] = {
60 /* Order important: first natively supported,
61 * second supported with a GPIO extender */
63 .name = "Bayer (sRGB) 10 bit",
65 .fourcc = V4L2_PIX_FMT_SBGGR16,
66 .colorspace = V4L2_COLORSPACE_SRGB,
68 .name = "Bayer (sRGB) 8 bit",
70 .fourcc = V4L2_PIX_FMT_SBGGR8,
71 .colorspace = V4L2_COLORSPACE_SRGB,
75 static const struct soc_camera_data_format mt9v022_monochrome_formats[] = {
76 /* Order important - see above */
78 .name = "Monochrome 10 bit",
80 .fourcc = V4L2_PIX_FMT_Y16,
82 .name = "Monochrome 8 bit",
84 .fourcc = V4L2_PIX_FMT_GREY,
89 struct i2c_client *client;
90 struct soc_camera_device icd;
91 int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */
94 unsigned char datawidth;
97 static int reg_read(struct soc_camera_device *icd, const u8 reg)
99 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
100 struct i2c_client *client = mt9v022->client;
101 s32 data = i2c_smbus_read_word_data(client, reg);
102 return data < 0 ? data : swab16(data);
105 static int reg_write(struct soc_camera_device *icd, const u8 reg,
108 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
109 return i2c_smbus_write_word_data(mt9v022->client, reg, swab16(data));
112 static int reg_set(struct soc_camera_device *icd, const u8 reg,
117 ret = reg_read(icd, reg);
120 return reg_write(icd, reg, ret | data);
123 static int reg_clear(struct soc_camera_device *icd, const u8 reg,
128 ret = reg_read(icd, reg);
131 return reg_write(icd, reg, ret & ~data);
134 static int mt9v022_init(struct soc_camera_device *icd)
136 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
137 struct soc_camera_link *icl = mt9v022->client->dev.platform_data;
141 ret = icl->power(&mt9v022->client->dev, 1);
143 dev_err(icd->vdev->parent,
144 "Platform failed to power-on the camera.\n");
150 * The camera could have been already on, we hard-reset it additionally,
151 * if available. Soft reset is done in video_probe().
154 icl->reset(&mt9v022->client->dev);
156 /* Almost the default mode: master, parallel, simultaneous, and an
157 * undocumented bit 0x200, which is present in table 7, but not in 8,
158 * plus snapshot mode to disable scan for now */
159 mt9v022->chip_control |= 0x10;
160 ret = reg_write(icd, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
162 ret = reg_write(icd, MT9V022_READ_MODE, 0x300);
167 ret = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x3);
169 ret = reg_write(icd, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480);
172 ret = reg_clear(icd, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1);
174 ret = reg_write(icd, MT9V022_DIGITAL_TEST_PATTERN, 0);
179 static int mt9v022_release(struct soc_camera_device *icd)
181 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
182 struct soc_camera_link *icl = mt9v022->client->dev.platform_data;
185 icl->power(&mt9v022->client->dev, 0);
190 static int mt9v022_start_capture(struct soc_camera_device *icd)
192 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
193 /* Switch to master "normal" mode */
194 mt9v022->chip_control &= ~0x10;
195 if (reg_write(icd, MT9V022_CHIP_CONTROL,
196 mt9v022->chip_control) < 0)
201 static int mt9v022_stop_capture(struct soc_camera_device *icd)
203 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
204 /* Switch to snapshot mode */
205 mt9v022->chip_control |= 0x10;
206 if (reg_write(icd, MT9V022_CHIP_CONTROL,
207 mt9v022->chip_control) < 0)
212 static int bus_switch_request(struct mt9v022 *mt9v022, struct soc_camera_link *icl)
214 #ifdef CONFIG_MT9V022_PCA9536_SWITCH
216 unsigned int gpio = icl->gpio;
218 if (gpio_is_valid(gpio)) {
219 /* We have a data bus switch. */
220 ret = gpio_request(gpio, "mt9v022");
222 dev_err(&mt9v022->client->dev, "Cannot get GPIO %u\n", gpio);
226 ret = gpio_direction_output(gpio, 0);
228 dev_err(&mt9v022->client->dev,
229 "Cannot set GPIO %u to output\n", gpio);
235 mt9v022->switch_gpio = gpio;
237 mt9v022->switch_gpio = -EINVAL;
242 static void bus_switch_release(struct mt9v022 *mt9v022)
244 #ifdef CONFIG_MT9V022_PCA9536_SWITCH
245 if (gpio_is_valid(mt9v022->switch_gpio))
246 gpio_free(mt9v022->switch_gpio);
250 static int bus_switch_act(struct mt9v022 *mt9v022, int go8bit)
252 #ifdef CONFIG_MT9V022_PCA9536_SWITCH
253 if (!gpio_is_valid(mt9v022->switch_gpio))
256 gpio_set_value_cansleep(mt9v022->switch_gpio, go8bit);
263 static int bus_switch_possible(struct mt9v022 *mt9v022)
265 #ifdef CONFIG_MT9V022_PCA9536_SWITCH
266 return gpio_is_valid(mt9v022->switch_gpio);
272 static int mt9v022_set_bus_param(struct soc_camera_device *icd,
275 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
276 struct soc_camera_link *icl = mt9v022->client->dev.platform_data;
277 unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK;
281 /* Only one width bit may be set */
282 if (!is_power_of_2(width_flag))
285 if ((mt9v022->datawidth != 10 && (width_flag == SOCAM_DATAWIDTH_10)) ||
286 (mt9v022->datawidth != 9 && (width_flag == SOCAM_DATAWIDTH_9)) ||
287 (mt9v022->datawidth != 8 && (width_flag == SOCAM_DATAWIDTH_8))) {
288 /* Well, we actually only can do 10 or 8 bits... */
289 if (width_flag == SOCAM_DATAWIDTH_9)
292 ret = bus_switch_act(mt9v022,
293 width_flag == SOCAM_DATAWIDTH_8);
297 mt9v022->datawidth = width_flag == SOCAM_DATAWIDTH_8 ? 8 : 10;
300 flags = soc_camera_apply_sensor_flags(icl, flags);
302 if (flags & SOCAM_PCLK_SAMPLE_RISING)
305 if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH))
308 if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH))
311 ret = reg_write(icd, MT9V022_PIXCLK_FV_LV, pixclk);
315 if (!(flags & SOCAM_MASTER))
316 mt9v022->chip_control &= ~0x8;
318 ret = reg_write(icd, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
322 dev_dbg(&icd->dev, "Calculated pixclk 0x%x, chip control 0x%x\n",
323 pixclk, mt9v022->chip_control);
328 static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd)
330 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
331 unsigned int width_flag = SOCAM_DATAWIDTH_10;
333 if (bus_switch_possible(mt9v022))
334 width_flag |= SOCAM_DATAWIDTH_8;
336 return SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING |
337 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW |
338 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW |
339 SOCAM_MASTER | SOCAM_SLAVE |
343 static int mt9v022_set_fmt(struct soc_camera_device *icd,
344 __u32 pixfmt, struct v4l2_rect *rect)
346 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
349 /* The caller provides a supported format, as verified per call to
350 * icd->try_fmt(), datawidth is from our supported format list */
352 case V4L2_PIX_FMT_GREY:
353 case V4L2_PIX_FMT_Y16:
354 if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM)
357 case V4L2_PIX_FMT_SBGGR8:
358 case V4L2_PIX_FMT_SBGGR16:
359 if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC)
363 /* No format change, only geometry */
369 /* Like in example app. Contradicts the datasheet though */
370 ret = reg_read(icd, MT9V022_AEC_AGC_ENABLE);
372 if (ret & 1) /* Autoexposure */
373 ret = reg_write(icd, MT9V022_MAX_TOTAL_SHUTTER_WIDTH,
374 rect->height + icd->y_skip_top + 43);
376 ret = reg_write(icd, MT9V022_TOTAL_SHUTTER_WIDTH,
377 rect->height + icd->y_skip_top + 43);
379 /* Setup frame format: defaults apart from width and height */
381 ret = reg_write(icd, MT9V022_COLUMN_START, rect->left);
383 ret = reg_write(icd, MT9V022_ROW_START, rect->top);
385 /* Default 94, Phytec driver says:
386 * "width + horizontal blank >= 660" */
387 ret = reg_write(icd, MT9V022_HORIZONTAL_BLANKING,
388 rect->width > 660 - 43 ? 43 :
391 ret = reg_write(icd, MT9V022_VERTICAL_BLANKING, 45);
393 ret = reg_write(icd, MT9V022_WINDOW_WIDTH, rect->width);
395 ret = reg_write(icd, MT9V022_WINDOW_HEIGHT,
396 rect->height + icd->y_skip_top);
401 dev_dbg(&icd->dev, "Frame %ux%u pixel\n", rect->width, rect->height);
406 static int mt9v022_try_fmt(struct soc_camera_device *icd,
407 struct v4l2_format *f)
409 if (f->fmt.pix.height < 32 + icd->y_skip_top)
410 f->fmt.pix.height = 32 + icd->y_skip_top;
411 if (f->fmt.pix.height > 480 + icd->y_skip_top)
412 f->fmt.pix.height = 480 + icd->y_skip_top;
413 if (f->fmt.pix.width < 48)
414 f->fmt.pix.width = 48;
415 if (f->fmt.pix.width > 752)
416 f->fmt.pix.width = 752;
417 f->fmt.pix.width &= ~0x03; /* ? */
422 static int mt9v022_get_chip_id(struct soc_camera_device *icd,
423 struct v4l2_chip_ident *id)
425 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
427 if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
430 if (id->match_chip != mt9v022->client->addr)
433 id->ident = mt9v022->model;
439 #ifdef CONFIG_VIDEO_ADV_DEBUG
440 static int mt9v022_get_register(struct soc_camera_device *icd,
441 struct v4l2_register *reg)
443 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
445 if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
448 if (reg->match_chip != mt9v022->client->addr)
451 reg->val = reg_read(icd, reg->reg);
453 if (reg->val > 0xffff)
459 static int mt9v022_set_register(struct soc_camera_device *icd,
460 struct v4l2_register *reg)
462 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
464 if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
467 if (reg->match_chip != mt9v022->client->addr)
470 if (reg_write(icd, reg->reg, reg->val) < 0)
477 static const struct v4l2_queryctrl mt9v022_controls[] = {
479 .id = V4L2_CID_VFLIP,
480 .type = V4L2_CTRL_TYPE_BOOLEAN,
481 .name = "Flip Vertically",
487 .id = V4L2_CID_HFLIP,
488 .type = V4L2_CTRL_TYPE_BOOLEAN,
489 .name = "Flip Horizontally",
496 .type = V4L2_CTRL_TYPE_INTEGER,
497 .name = "Analog Gain",
502 .flags = V4L2_CTRL_FLAG_SLIDER,
504 .id = V4L2_CID_EXPOSURE,
505 .type = V4L2_CTRL_TYPE_INTEGER,
510 .default_value = 255,
511 .flags = V4L2_CTRL_FLAG_SLIDER,
513 .id = V4L2_CID_AUTOGAIN,
514 .type = V4L2_CTRL_TYPE_BOOLEAN,
515 .name = "Automatic Gain",
521 .id = V4L2_CID_EXPOSURE_AUTO,
522 .type = V4L2_CTRL_TYPE_BOOLEAN,
523 .name = "Automatic Exposure",
531 static int mt9v022_video_probe(struct soc_camera_device *);
532 static void mt9v022_video_remove(struct soc_camera_device *);
533 static int mt9v022_get_control(struct soc_camera_device *, struct v4l2_control *);
534 static int mt9v022_set_control(struct soc_camera_device *, struct v4l2_control *);
536 static struct soc_camera_ops mt9v022_ops = {
537 .owner = THIS_MODULE,
538 .probe = mt9v022_video_probe,
539 .remove = mt9v022_video_remove,
540 .init = mt9v022_init,
541 .release = mt9v022_release,
542 .start_capture = mt9v022_start_capture,
543 .stop_capture = mt9v022_stop_capture,
544 .set_fmt = mt9v022_set_fmt,
545 .try_fmt = mt9v022_try_fmt,
546 .set_bus_param = mt9v022_set_bus_param,
547 .query_bus_param = mt9v022_query_bus_param,
548 .controls = mt9v022_controls,
549 .num_controls = ARRAY_SIZE(mt9v022_controls),
550 .get_control = mt9v022_get_control,
551 .set_control = mt9v022_set_control,
552 .get_chip_id = mt9v022_get_chip_id,
553 #ifdef CONFIG_VIDEO_ADV_DEBUG
554 .get_register = mt9v022_get_register,
555 .set_register = mt9v022_set_register,
559 static int mt9v022_get_control(struct soc_camera_device *icd,
560 struct v4l2_control *ctrl)
566 data = reg_read(icd, MT9V022_READ_MODE);
569 ctrl->value = !!(data & 0x10);
572 data = reg_read(icd, MT9V022_READ_MODE);
575 ctrl->value = !!(data & 0x20);
577 case V4L2_CID_EXPOSURE_AUTO:
578 data = reg_read(icd, MT9V022_AEC_AGC_ENABLE);
581 ctrl->value = !!(data & 0x1);
583 case V4L2_CID_AUTOGAIN:
584 data = reg_read(icd, MT9V022_AEC_AGC_ENABLE);
587 ctrl->value = !!(data & 0x2);
593 static int mt9v022_set_control(struct soc_camera_device *icd,
594 struct v4l2_control *ctrl)
597 const struct v4l2_queryctrl *qctrl;
599 qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id);
607 data = reg_set(icd, MT9V022_READ_MODE, 0x10);
609 data = reg_clear(icd, MT9V022_READ_MODE, 0x10);
615 data = reg_set(icd, MT9V022_READ_MODE, 0x20);
617 data = reg_clear(icd, MT9V022_READ_MODE, 0x20);
622 /* mt9v022 has minimum == default */
623 if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
626 unsigned long range = qctrl->maximum - qctrl->minimum;
627 /* Datasheet says 16 to 64. autogain only works properly
628 * after setting gain to maximum 14. Larger values
629 * produce "white fly" noise effect. On the whole,
630 * manually setting analog gain does no good. */
631 unsigned long gain = ((ctrl->value - qctrl->minimum) *
632 10 + range / 2) / range + 4;
635 /* The user wants to set gain manually, hope, she
636 * knows, what she's doing... Switch AGC off. */
638 if (reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x2) < 0)
641 dev_info(&icd->dev, "Setting gain from %d to %lu\n",
642 reg_read(icd, MT9V022_ANALOG_GAIN), gain);
643 if (reg_write(icd, MT9V022_ANALOG_GAIN, gain) < 0)
645 icd->gain = ctrl->value;
648 case V4L2_CID_EXPOSURE:
649 /* mt9v022 has maximum == default */
650 if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
653 unsigned long range = qctrl->maximum - qctrl->minimum;
654 unsigned long shutter = ((ctrl->value - qctrl->minimum) *
655 479 + range / 2) / range + 1;
656 /* The user wants to set shutter width manually, hope,
657 * she knows, what she's doing... Switch AEC off. */
659 if (reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x1) < 0)
662 dev_dbg(&icd->dev, "Shutter width from %d to %lu\n",
663 reg_read(icd, MT9V022_TOTAL_SHUTTER_WIDTH),
665 if (reg_write(icd, MT9V022_TOTAL_SHUTTER_WIDTH,
668 icd->exposure = ctrl->value;
671 case V4L2_CID_AUTOGAIN:
673 data = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x2);
675 data = reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x2);
679 case V4L2_CID_EXPOSURE_AUTO:
681 data = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x1);
683 data = reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x1);
691 /* Interface active, can use i2c. If it fails, it can indeed mean, that
692 * this wasn't our capture interface, so, we wait for the right one */
693 static int mt9v022_video_probe(struct soc_camera_device *icd)
695 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
696 struct soc_camera_link *icl = mt9v022->client->dev.platform_data;
700 if (!icd->dev.parent ||
701 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
704 /* Read out the chip version register */
705 data = reg_read(icd, MT9V022_CHIP_VERSION);
707 /* must be 0x1311 or 0x1313 */
708 if (data != 0x1311 && data != 0x1313) {
710 dev_info(&icd->dev, "No MT9V022 detected, ID register 0x%x\n",
716 ret = reg_write(icd, MT9V022_RESET, 1);
719 /* 15 clock cycles */
721 if (reg_read(icd, MT9V022_RESET)) {
722 dev_err(&icd->dev, "Resetting MT9V022 failed!\n");
726 /* Set monochrome or colour sensor type */
727 if (sensor_type && (!strcmp("colour", sensor_type) ||
728 !strcmp("color", sensor_type))) {
729 ret = reg_write(icd, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11);
730 mt9v022->model = V4L2_IDENT_MT9V022IX7ATC;
731 icd->formats = mt9v022_colour_formats;
732 if (gpio_is_valid(icl->gpio))
733 icd->num_formats = ARRAY_SIZE(mt9v022_colour_formats);
735 icd->num_formats = 1;
737 ret = reg_write(icd, MT9V022_PIXEL_OPERATION_MODE, 0x11);
738 mt9v022->model = V4L2_IDENT_MT9V022IX7ATM;
739 icd->formats = mt9v022_monochrome_formats;
740 if (gpio_is_valid(icl->gpio))
741 icd->num_formats = ARRAY_SIZE(mt9v022_monochrome_formats);
743 icd->num_formats = 1;
747 ret = soc_camera_video_start(icd);
751 dev_info(&icd->dev, "Detected a MT9V022 chip ID %x, %s sensor\n",
752 data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ?
753 "monochrome" : "colour");
762 static void mt9v022_video_remove(struct soc_camera_device *icd)
764 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
766 dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9v022->client->addr,
767 mt9v022->icd.dev.parent, mt9v022->icd.vdev);
768 soc_camera_video_stop(&mt9v022->icd);
771 static int mt9v022_probe(struct i2c_client *client,
772 const struct i2c_device_id *did)
774 struct mt9v022 *mt9v022;
775 struct soc_camera_device *icd;
776 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
777 struct soc_camera_link *icl = client->dev.platform_data;
781 dev_err(&client->dev, "MT9V022 driver needs platform data\n");
785 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
786 dev_warn(&adapter->dev,
787 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
791 mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL);
795 mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT;
796 mt9v022->client = client;
797 i2c_set_clientdata(client, mt9v022);
800 icd->ops = &mt9v022_ops;
801 icd->control = &client->dev;
807 icd->width_max = 752;
808 icd->height_min = 32;
809 icd->height_max = 480;
811 icd->iface = icl->bus_id;
812 /* Default datawidth - this is the only width this camera (normally)
813 * supports. It is only with extra logic that it can support
814 * other widths. Therefore it seems to be a sensible default. */
815 mt9v022->datawidth = 10;
817 ret = bus_switch_request(mt9v022, icl);
821 ret = soc_camera_device_register(icd);
828 bus_switch_release(mt9v022);
834 static int mt9v022_remove(struct i2c_client *client)
836 struct mt9v022 *mt9v022 = i2c_get_clientdata(client);
838 soc_camera_device_unregister(&mt9v022->icd);
839 bus_switch_release(mt9v022);
844 static const struct i2c_device_id mt9v022_id[] = {
848 MODULE_DEVICE_TABLE(i2c, mt9v022_id);
850 static struct i2c_driver mt9v022_i2c_driver = {
854 .probe = mt9v022_probe,
855 .remove = mt9v022_remove,
856 .id_table = mt9v022_id,
859 static int __init mt9v022_mod_init(void)
861 return i2c_add_driver(&mt9v022_i2c_driver);
864 static void __exit mt9v022_mod_exit(void)
866 i2c_del_driver(&mt9v022_i2c_driver);
869 module_init(mt9v022_mod_init);
870 module_exit(mt9v022_mod_exit);
872 MODULE_DESCRIPTION("Micron MT9V022 Camera driver");
873 MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
874 MODULE_LICENSE("GPL");