/* * Driver for MT9V032 CMOS Image Sensor from Micron * * Copyright (C) 2010, Laurent Pinchart <laurent.pinchart@ideasonboard.com> * * Based on the MT9M001 driver, * * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/delay.h> #include <linux/i2c.h> #include <linux/log2.h> #include <linux/mutex.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <linux/v4l2-mediabus.h> #include <media/mt9v032.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-subdev.h> #define MT9V032_PIXEL_ARRAY_HEIGHT 492 #define MT9V032_PIXEL_ARRAY_WIDTH 782 #define MT9V032_CHIP_VERSION 0x00 #define MT9V032_CHIP_ID_REV1 0x1311 #define MT9V032_CHIP_ID_REV3 0x1313 #define MT9V032_ROW_START 0x01 #define MT9V032_ROW_START_MIN 4 #define MT9V032_ROW_START_DEF 10 #define MT9V032_ROW_START_MAX 482 #define MT9V032_COLUMN_START 0x02 #define MT9V032_COLUMN_START_MIN 1 #define MT9V032_COLUMN_START_DEF 2 #define MT9V032_COLUMN_START_MAX 752 #define MT9V032_WINDOW_HEIGHT 0x03 #define MT9V032_WINDOW_HEIGHT_MIN 1 #define MT9V032_WINDOW_HEIGHT_DEF 480 #define MT9V032_WINDOW_HEIGHT_MAX 480 #define MT9V032_WINDOW_WIDTH 0x04 #define MT9V032_WINDOW_WIDTH_MIN 1 #define MT9V032_WINDOW_WIDTH_DEF 752 #define MT9V032_WINDOW_WIDTH_MAX 752 #define MT9V032_HORIZONTAL_BLANKING 0x05 #define MT9V032_HORIZONTAL_BLANKING_MIN 43 #define MT9V032_HORIZONTAL_BLANKING_MAX 1023 #define MT9V032_VERTICAL_BLANKING 0x06 #define MT9V032_VERTICAL_BLANKING_MIN 4 #define MT9V032_VERTICAL_BLANKING_MAX 3000 #define MT9V032_CHIP_CONTROL 0x07 #define MT9V032_CHIP_CONTROL_MASTER_MODE (1 << 3) #define MT9V032_CHIP_CONTROL_DOUT_ENABLE (1 << 7) #define MT9V032_CHIP_CONTROL_SEQUENTIAL (1 << 8) #define MT9V032_SHUTTER_WIDTH1 0x08 #define MT9V032_SHUTTER_WIDTH2 0x09 #define MT9V032_SHUTTER_WIDTH_CONTROL 0x0a #define MT9V032_TOTAL_SHUTTER_WIDTH 0x0b #define MT9V032_TOTAL_SHUTTER_WIDTH_MIN 1 #define MT9V032_TOTAL_SHUTTER_WIDTH_DEF 480 #define MT9V032_TOTAL_SHUTTER_WIDTH_MAX 32767 #define MT9V032_RESET 0x0c #define MT9V032_READ_MODE 0x0d #define MT9V032_READ_MODE_ROW_BIN_MASK (3 << 0) #define MT9V032_READ_MODE_ROW_BIN_SHIFT 0 #define MT9V032_READ_MODE_COLUMN_BIN_MASK (3 << 2) #define MT9V032_READ_MODE_COLUMN_BIN_SHIFT 2 #define MT9V032_READ_MODE_ROW_FLIP (1 << 4) #define MT9V032_READ_MODE_COLUMN_FLIP (1 << 5) #define MT9V032_READ_MODE_DARK_COLUMNS (1 << 6) #define MT9V032_READ_MODE_DARK_ROWS (1 << 7) #define MT9V032_PIXEL_OPERATION_MODE 0x0f #define MT9V032_PIXEL_OPERATION_MODE_COLOR (1 << 2) #define MT9V032_PIXEL_OPERATION_MODE_HDR (1 << 6) #define MT9V032_ANALOG_GAIN 0x35 #define MT9V032_ANALOG_GAIN_MIN 16 #define MT9V032_ANALOG_GAIN_DEF 16 #define MT9V032_ANALOG_GAIN_MAX 64 #define MT9V032_MAX_ANALOG_GAIN 0x36 #define MT9V032_MAX_ANALOG_GAIN_MAX 127 #define MT9V032_FRAME_DARK_AVERAGE 0x42 #define MT9V032_DARK_AVG_THRESH 0x46 #define MT9V032_DARK_AVG_LOW_THRESH_MASK (255 << 0) #define MT9V032_DARK_AVG_LOW_THRESH_SHIFT 0 #define MT9V032_DARK_AVG_HIGH_THRESH_MASK (255 << 8) #define MT9V032_DARK_AVG_HIGH_THRESH_SHIFT 8 #define MT9V032_ROW_NOISE_CORR_CONTROL 0x70 #define MT9V032_ROW_NOISE_CORR_ENABLE (1 << 5) #define MT9V032_ROW_NOISE_CORR_USE_BLK_AVG (1 << 7) #define MT9V032_PIXEL_CLOCK 0x74 #define MT9V032_PIXEL_CLOCK_INV_LINE (1 << 0) #define MT9V032_PIXEL_CLOCK_INV_FRAME (1 << 1) #define MT9V032_PIXEL_CLOCK_XOR_LINE (1 << 2) #define MT9V032_PIXEL_CLOCK_CONT_LINE (1 << 3) #define MT9V032_PIXEL_CLOCK_INV_PXL_CLK (1 << 4) #define MT9V032_TEST_PATTERN 0x7f #define MT9V032_TEST_PATTERN_DATA_MASK (1023 << 0) #define MT9V032_TEST_PATTERN_DATA_SHIFT 0 #define MT9V032_TEST_PATTERN_USE_DATA (1 << 10) #define MT9V032_TEST_PATTERN_GRAY_MASK (3 << 11) #define MT9V032_TEST_PATTERN_GRAY_NONE (0 << 11) #define MT9V032_TEST_PATTERN_GRAY_VERTICAL (1 << 11) #define MT9V032_TEST_PATTERN_GRAY_HORIZONTAL (2 << 11) #define MT9V032_TEST_PATTERN_GRAY_DIAGONAL (3 << 11) #define MT9V032_TEST_PATTERN_ENABLE (1 << 13) #define MT9V032_TEST_PATTERN_FLIP (1 << 14) #define MT9V032_AEC_AGC_ENABLE 0xaf #define MT9V032_AEC_ENABLE (1 << 0) #define MT9V032_AGC_ENABLE (1 << 1) #define MT9V032_THERMAL_INFO 0xc1 struct mt9v032 { struct v4l2_subdev subdev; struct media_pad pad; struct v4l2_mbus_framefmt format; struct v4l2_rect crop; struct v4l2_ctrl_handler ctrls; struct mutex power_lock; int power_count; struct mt9v032_platform_data *pdata; u16 chip_control; u16 aec_agc; }; static struct mt9v032 *to_mt9v032(struct v4l2_subdev *sd) { return container_of(sd, struct mt9v032, subdev); } static int mt9v032_read(struct i2c_client *client, const u8 reg) { s32 data = i2c_smbus_read_word_data(client, reg); dev_dbg(&client->dev, "%s: read 0x%04x from 0x%02x\n", __func__, swab16(data), reg); return data < 0 ? data : swab16(data); } static int mt9v032_write(struct i2c_client *client, const u8 reg, const u16 data) { dev_dbg(&client->dev, "%s: writing 0x%04x to 0x%02x\n", __func__, data, reg); return i2c_smbus_write_word_data(client, reg, swab16(data)); } static int mt9v032_set_chip_control(struct mt9v032 *mt9v032, u16 clear, u16 set) { struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev); u16 value = (mt9v032->chip_control & ~clear) | set; int ret; ret = mt9v032_write(client, MT9V032_CHIP_CONTROL, value); if (ret < 0) return ret; mt9v032->chip_control = value; return 0; } static int mt9v032_update_aec_agc(struct mt9v032 *mt9v032, u16 which, int enable) { struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev); u16 value = mt9v032->aec_agc; int ret; if (enable) value |= which; else value &= ~which; ret = mt9v032_write(client, MT9V032_AEC_AGC_ENABLE, value); if (ret < 0) return ret; mt9v032->aec_agc = value; return 0; } static int mt9v032_power_on(struct mt9v032 *mt9v032) { struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev); int ret; if (mt9v032->pdata->set_clock) { mt9v032->pdata->set_clock(&mt9v032->subdev, 25000000); udelay(1); } /* Reset the chip and stop data read out */ ret = mt9v032_write(client, MT9V032_RESET, 1); if (ret < 0) return ret; ret = mt9v032_write(client, MT9V032_RESET, 0); if (ret < 0) return ret; return mt9v032_write(client, MT9V032_CHIP_CONTROL, 0); } static void mt9v032_power_off(struct mt9v032 *mt9v032) { if (mt9v032->pdata->set_clock) mt9v032->pdata->set_clock(&mt9v032->subdev, 0); } static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on) { struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev); int ret; if (!on) { mt9v032_power_off(mt9v032); return 0; } ret = mt9v032_power_on(mt9v032); if (ret < 0) return ret; /* Configure the pixel clock polarity */ if (mt9v032->pdata && mt9v032->pdata->clk_pol) { ret = mt9v032_write(client, MT9V032_PIXEL_CLOCK, MT9V032_PIXEL_CLOCK_INV_PXL_CLK); if (ret < 0) return ret; } /* Disable the noise correction algorithm and restore the controls. */ ret = mt9v032_write(client, MT9V032_ROW_NOISE_CORR_CONTROL, 0); if (ret < 0) return ret; return v4l2_ctrl_handler_setup(&mt9v032->ctrls); } /* ----------------------------------------------------------------------------- * V4L2 subdev video operations */ static struct v4l2_mbus_framefmt * __mt9v032_get_pad_format(struct mt9v032 *mt9v032, struct v4l2_subdev_fh *fh, unsigned int pad, enum v4l2_subdev_format_whence which) { switch (which) { case V4L2_SUBDEV_FORMAT_TRY: return v4l2_subdev_get_try_format(fh, pad); case V4L2_SUBDEV_FORMAT_ACTIVE: return &mt9v032->format; default: return NULL; } } static struct v4l2_rect * __mt9v032_get_pad_crop(struct mt9v032 *mt9v032, struct v4l2_subdev_fh *fh, unsigned int pad, enum v4l2_subdev_format_whence which) { switch (which) { case V4L2_SUBDEV_FORMAT_TRY: return v4l2_subdev_get_try_crop(fh, pad); case V4L2_SUBDEV_FORMAT_ACTIVE: return &mt9v032->crop; default: return NULL; } } static int mt9v032_s_stream(struct v4l2_subdev *subdev, int enable) { const u16 mode = MT9V032_CHIP_CONTROL_MASTER_MODE | MT9V032_CHIP_CONTROL_DOUT_ENABLE | MT9V032_CHIP_CONTROL_SEQUENTIAL; struct i2c_client *client = v4l2_get_subdevdata(subdev); struct mt9v032 *mt9v032 = to_mt9v032(subdev); struct v4l2_mbus_framefmt *format = &mt9v032->format; struct v4l2_rect *crop = &mt9v032->crop; unsigned int hratio; unsigned int vratio; int ret; if (!enable) return mt9v032_set_chip_control(mt9v032, mode, 0); /* Configure the window size and row/column bin */ hratio = DIV_ROUND_CLOSEST(crop->width, format->width); vratio = DIV_ROUND_CLOSEST(crop->height, format->height); ret = mt9v032_write(client, MT9V032_READ_MODE, (hratio - 1) << MT9V032_READ_MODE_ROW_BIN_SHIFT | (vratio - 1) << MT9V032_READ_MODE_COLUMN_BIN_SHIFT); if (ret < 0) return ret; ret = mt9v032_write(client, MT9V032_COLUMN_START, crop->left); if (ret < 0) return ret; ret = mt9v032_write(client, MT9V032_ROW_START, crop->top); if (ret < 0) return ret; ret = mt9v032_write(client, MT9V032_WINDOW_WIDTH, crop->width); if (ret < 0) return ret; ret = mt9v032_write(client, MT9V032_WINDOW_HEIGHT, crop->height); if (ret < 0) return ret; ret = mt9v032_write(client, MT9V032_HORIZONTAL_BLANKING, max(43, 660 - crop->width)); if (ret < 0) return ret; /* Switch to master "normal" mode */ return mt9v032_set_chip_control(mt9v032, 0, mode); } static int mt9v032_enum_mbus_code(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_mbus_code_enum *code) { if (code->index > 0) return -EINVAL; code->code = V4L2_MBUS_FMT_SGRBG10_1X10; return 0; } static int mt9v032_enum_frame_size(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_frame_size_enum *fse) { if (fse->index >= 8 || fse->code != V4L2_MBUS_FMT_SGRBG10_1X10) return -EINVAL; fse->min_width = MT9V032_WINDOW_WIDTH_DEF / fse->index; fse->max_width = fse->min_width; fse->min_height = MT9V032_WINDOW_HEIGHT_DEF / fse->index; fse->max_height = fse->min_height; return 0; } static int mt9v032_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *format) { struct mt9v032 *mt9v032 = to_mt9v032(subdev); format->format = *__mt9v032_get_pad_format(mt9v032, fh, format->pad, format->which); return 0; } static int mt9v032_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *format) { struct mt9v032 *mt9v032 = to_mt9v032(subdev); struct v4l2_mbus_framefmt *__format; struct v4l2_rect *__crop; unsigned int width; unsigned int height; unsigned int hratio; unsigned int vratio; __crop = __mt9v032_get_pad_crop(mt9v032, fh, format->pad, format->which); /* Clamp the width and height to avoid dividing by zero. */ width = clamp_t(unsigned int, ALIGN(format->format.width, 2), max(__crop->width / 8, MT9V032_WINDOW_WIDTH_MIN), __crop->width); height = clamp_t(unsigned int, ALIGN(format->format.height, 2), max(__crop->height / 8, MT9V032_WINDOW_HEIGHT_MIN), __crop->height); hratio = DIV_ROUND_CLOSEST(__crop->width, width); vratio = DIV_ROUND_CLOSEST(__crop->height, height); __format = __mt9v032_get_pad_format(mt9v032, fh, format->pad, format->which); __format->width = __crop->width / hratio; __format->height = __crop->height / vratio; format->format = *__format; return 0; } static int mt9v032_get_crop(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_crop *crop) { struct mt9v032 *mt9v032 = to_mt9v032(subdev); crop->rect = *__mt9v032_get_pad_crop(mt9v032, fh, crop->pad, crop->which); return 0; } static int mt9v032_set_crop(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh, struct v4l2_subdev_crop *crop) { struct mt9v032 *mt9v032 = to_mt9v032(subdev); struct v4l2_mbus_framefmt *__format; struct v4l2_rect *__crop; struct v4l2_rect rect; /* Clamp the crop rectangle boundaries and align them to a multiple of 2 * pixels. */ rect.left = clamp(ALIGN(crop->rect.left, 2), MT9V032_COLUMN_START_MIN, MT9V032_COLUMN_START_MAX); rect.top = clamp(ALIGN(crop->rect.top, 2), MT9V032_ROW_START_MIN, MT9V032_ROW_START_MAX); rect.width = clamp(ALIGN(crop->rect.width, 2), MT9V032_WINDOW_WIDTH_MIN, MT9V032_WINDOW_WIDTH_MAX); rect.height = clamp(ALIGN(crop->rect.height, 2), MT9V032_WINDOW_HEIGHT_MIN, MT9V032_WINDOW_HEIGHT_MAX); rect.width = min(rect.width, MT9V032_PIXEL_ARRAY_WIDTH - rect.left); rect.height = min(rect.height, MT9V032_PIXEL_ARRAY_HEIGHT - rect.top); __crop = __mt9v032_get_pad_crop(mt9v032, fh, crop->pad, crop->which); if (rect.width != __crop->width || rect.height != __crop->height) { /* Reset the output image size if the crop rectangle size has * been modified. */ __format = __mt9v032_get_pad_format(mt9v032, fh, crop->pad, crop->which); __format->width = rect.width; __format->height = rect.height; } *__crop = rect; crop->rect = rect; return 0; } /* ----------------------------------------------------------------------------- * V4L2 subdev control operations */ #define V4L2_CID_TEST_PATTERN (V4L2_CID_USER_BASE | 0x1001) static int mt9v032_s_ctrl(struct v4l2_ctrl *ctrl) { struct mt9v032 *mt9v032 = container_of(ctrl->handler, struct mt9v032, ctrls); struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev); u16 data; switch (ctrl->id) { case V4L2_CID_AUTOGAIN: return mt9v032_update_aec_agc(mt9v032, MT9V032_AGC_ENABLE, ctrl->val); case V4L2_CID_GAIN: return mt9v032_write(client, MT9V032_ANALOG_GAIN, ctrl->val); case V4L2_CID_EXPOSURE_AUTO: return mt9v032_update_aec_agc(mt9v032, MT9V032_AEC_ENABLE, ctrl->val); case V4L2_CID_EXPOSURE: return mt9v032_write(client, MT9V032_TOTAL_SHUTTER_WIDTH, ctrl->val); case V4L2_CID_TEST_PATTERN: switch (ctrl->val) { case 0: data = 0; break; case 1: data = MT9V032_TEST_PATTERN_GRAY_VERTICAL | MT9V032_TEST_PATTERN_ENABLE; break; case 2: data = MT9V032_TEST_PATTERN_GRAY_HORIZONTAL | MT9V032_TEST_PATTERN_ENABLE; break; case 3: data = MT9V032_TEST_PATTERN_GRAY_DIAGONAL | MT9V032_TEST_PATTERN_ENABLE; break; default: data = (ctrl->val << MT9V032_TEST_PATTERN_DATA_SHIFT) | MT9V032_TEST_PATTERN_USE_DATA | MT9V032_TEST_PATTERN_ENABLE | MT9V032_TEST_PATTERN_FLIP; break; } return mt9v032_write(client, MT9V032_TEST_PATTERN, data); } return 0; } static struct v4l2_ctrl_ops mt9v032_ctrl_ops = { .s_ctrl = mt9v032_s_ctrl, }; static const struct v4l2_ctrl_config mt9v032_ctrls[] = { { .ops = &mt9v032_ctrl_ops, .id = V4L2_CID_TEST_PATTERN, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Test pattern", .min = 0, .max = 1023, .step = 1, .def = 0, .flags = 0, } }; /* ----------------------------------------------------------------------------- * V4L2 subdev core operations */ static int mt9v032_set_power(struct v4l2_subdev *subdev, int on) { struct mt9v032 *mt9v032 = to_mt9v032(subdev); int ret = 0; mutex_lock(&mt9v032->power_lock); /* If the power count is modified from 0 to != 0 or from != 0 to 0, * update the power state. */ if (mt9v032->power_count == !on) { ret = __mt9v032_set_power(mt9v032, !!on); if (ret < 0) goto done; } /* Update the power count. */ mt9v032->power_count += on ? 1 : -1; WARN_ON(mt9v032->power_count < 0); done: mutex_unlock(&mt9v032->power_lock); return ret; } /* ----------------------------------------------------------------------------- * V4L2 subdev internal operations */ static int mt9v032_registered(struct v4l2_subdev *subdev) { struct i2c_client *client = v4l2_get_subdevdata(subdev); struct mt9v032 *mt9v032 = to_mt9v032(subdev); s32 data; int ret; dev_info(&client->dev, "Probing MT9V032 at address 0x%02x\n", client->addr); ret = mt9v032_power_on(mt9v032); if (ret < 0) { dev_err(&client->dev, "MT9V032 power up failed\n"); return ret; } /* Read and check the sensor version */ data = mt9v032_read(client, MT9V032_CHIP_VERSION); if (data != MT9V032_CHIP_ID_REV1 && data != MT9V032_CHIP_ID_REV3) { dev_err(&client->dev, "MT9V032 not detected, wrong version " "0x%04x\n", data); return -ENODEV; } mt9v032_power_off(mt9v032); dev_info(&client->dev, "MT9V032 detected at address 0x%02x\n", client->addr); return ret; } static int mt9v032_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) { struct v4l2_mbus_framefmt *format; struct v4l2_rect *crop; crop = v4l2_subdev_get_try_crop(fh, 0); crop->left = MT9V032_COLUMN_START_DEF; crop->top = MT9V032_ROW_START_DEF; crop->width = MT9V032_WINDOW_WIDTH_DEF; crop->height = MT9V032_WINDOW_HEIGHT_DEF; format = v4l2_subdev_get_try_format(fh, 0); format->code = V4L2_MBUS_FMT_SGRBG10_1X10; format->width = MT9V032_WINDOW_WIDTH_DEF; format->height = MT9V032_WINDOW_HEIGHT_DEF; format->field = V4L2_FIELD_NONE; format->colorspace = V4L2_COLORSPACE_SRGB; return mt9v032_set_power(subdev, 1); } static int mt9v032_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) { return mt9v032_set_power(subdev, 0); } static struct v4l2_subdev_core_ops mt9v032_subdev_core_ops = { .s_power = mt9v032_set_power, }; static struct v4l2_subdev_video_ops mt9v032_subdev_video_ops = { .s_stream = mt9v032_s_stream, }; static struct v4l2_subdev_pad_ops mt9v032_subdev_pad_ops = { .enum_mbus_code = mt9v032_enum_mbus_code, .enum_frame_size = mt9v032_enum_frame_size, .get_fmt = mt9v032_get_format, .set_fmt = mt9v032_set_format, .get_crop = mt9v032_get_crop, .set_crop = mt9v032_set_crop, }; static struct v4l2_subdev_ops mt9v032_subdev_ops = { .core = &mt9v032_subdev_core_ops, .video = &mt9v032_subdev_video_ops, .pad = &mt9v032_subdev_pad_ops, }; static const struct v4l2_subdev_internal_ops mt9v032_subdev_internal_ops = { .registered = mt9v032_registered, .open = mt9v032_open, .close = mt9v032_close, }; /* ----------------------------------------------------------------------------- * Driver initialization and probing */ static int mt9v032_probe(struct i2c_client *client, const struct i2c_device_id *did) { struct mt9v032 *mt9v032; unsigned int i; int ret; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA)) { dev_warn(&client->adapter->dev, "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); return -EIO; } mt9v032 = kzalloc(sizeof(*mt9v032), GFP_KERNEL); if (!mt9v032) return -ENOMEM; mutex_init(&mt9v032->power_lock); mt9v032->pdata = client->dev.platform_data; v4l2_ctrl_handler_init(&mt9v032->ctrls, ARRAY_SIZE(mt9v032_ctrls) + 4); v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops, V4L2_CID_AUTOGAIN, 0, 1, 1, 1); v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops, V4L2_CID_GAIN, MT9V032_ANALOG_GAIN_MIN, MT9V032_ANALOG_GAIN_MAX, 1, MT9V032_ANALOG_GAIN_DEF); v4l2_ctrl_new_std_menu(&mt9v032->ctrls, &mt9v032_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_AUTO); v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops, V4L2_CID_EXPOSURE, MT9V032_TOTAL_SHUTTER_WIDTH_MIN, MT9V032_TOTAL_SHUTTER_WIDTH_MAX, 1, MT9V032_TOTAL_SHUTTER_WIDTH_DEF); for (i = 0; i < ARRAY_SIZE(mt9v032_ctrls); ++i) v4l2_ctrl_new_custom(&mt9v032->ctrls, &mt9v032_ctrls[i], NULL); mt9v032->subdev.ctrl_handler = &mt9v032->ctrls; if (mt9v032->ctrls.error) printk(KERN_INFO "%s: control initialization error %d\n", __func__, mt9v032->ctrls.error); mt9v032->crop.left = MT9V032_COLUMN_START_DEF; mt9v032->crop.top = MT9V032_ROW_START_DEF; mt9v032->crop.width = MT9V032_WINDOW_WIDTH_DEF; mt9v032->crop.height = MT9V032_WINDOW_HEIGHT_DEF; mt9v032->format.code = V4L2_MBUS_FMT_SGRBG10_1X10; mt9v032->format.width = MT9V032_WINDOW_WIDTH_DEF; mt9v032->format.height = MT9V032_WINDOW_HEIGHT_DEF; mt9v032->format.field = V4L2_FIELD_NONE; mt9v032->format.colorspace = V4L2_COLORSPACE_SRGB; mt9v032->aec_agc = MT9V032_AEC_ENABLE | MT9V032_AGC_ENABLE; v4l2_i2c_subdev_init(&mt9v032->subdev, client, &mt9v032_subdev_ops); mt9v032->subdev.internal_ops = &mt9v032_subdev_internal_ops; mt9v032->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad, 0); if (ret < 0) kfree(mt9v032); return ret; } static int mt9v032_remove(struct i2c_client *client) { struct v4l2_subdev *subdev = i2c_get_clientdata(client); struct mt9v032 *mt9v032 = to_mt9v032(subdev); v4l2_device_unregister_subdev(subdev); media_entity_cleanup(&subdev->entity); kfree(mt9v032); return 0; } static const struct i2c_device_id mt9v032_id[] = { { "mt9v032", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, mt9v032_id); static struct i2c_driver mt9v032_driver = { .driver = { .name = "mt9v032", }, .probe = mt9v032_probe, .remove = mt9v032_remove, .id_table = mt9v032_id, }; static int __init mt9v032_init(void) { return i2c_add_driver(&mt9v032_driver); } static void __exit mt9v032_exit(void) { i2c_del_driver(&mt9v032_driver); } module_init(mt9v032_init); module_exit(mt9v032_exit); MODULE_DESCRIPTION("Aptina MT9V032 Camera driver"); MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>"); MODULE_LICENSE("GPL");