| /* |
| * 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 <linux/module.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_SYSCLK_FREQ_DEF 26600000 |
| |
| #define MT9V032_CHIP_VERSION 0x00 |
| #define MT9V032_CHIP_ID_REV1 0x1311 |
| #define MT9V032_CHIP_ID_REV3 0x1313 |
| #define MT9V032_COLUMN_START 0x01 |
| #define MT9V032_COLUMN_START_MIN 1 |
| #define MT9V032_COLUMN_START_DEF 1 |
| #define MT9V032_COLUMN_START_MAX 752 |
| #define MT9V032_ROW_START 0x02 |
| #define MT9V032_ROW_START_MIN 4 |
| #define MT9V032_ROW_START_DEF 5 |
| #define MT9V032_ROW_START_MAX 482 |
| #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_DEF 94 |
| #define MT9V032_HORIZONTAL_BLANKING_MAX 1023 |
| #define MT9V032_VERTICAL_BLANKING 0x06 |
| #define MT9V032_VERTICAL_BLANKING_MIN 4 |
| #define MT9V032_VERTICAL_BLANKING_DEF 45 |
| #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 { |
| struct v4l2_ctrl *link_freq; |
| struct v4l2_ctrl *pixel_rate; |
| }; |
| |
| struct mutex power_lock; |
| int power_count; |
| |
| struct mt9v032_platform_data *pdata; |
| |
| u32 sysclk; |
| u16 chip_control; |
| u16 aec_agc; |
| u16 hblank; |
| struct { |
| struct v4l2_ctrl *test_pattern; |
| struct v4l2_ctrl *test_pattern_color; |
| }; |
| }; |
| |
| 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_swapped(client, reg); |
| dev_dbg(&client->dev, "%s: read 0x%04x from 0x%02x\n", __func__, |
| data, reg); |
| return 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_swapped(client, reg, 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_update_hblank(struct mt9v032 *mt9v032) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev); |
| struct v4l2_rect *crop = &mt9v032->crop; |
| |
| return mt9v032_write(client, MT9V032_HORIZONTAL_BLANKING, |
| max_t(s32, mt9v032->hblank, 660 - crop->width)); |
| } |
| |
| #define EXT_CLK 25000000 |
| |
| 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, mt9v032->sysclk); |
| 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_update_hblank(mt9v032); |
| 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 void mt9v032_configure_pixel_rate(struct mt9v032 *mt9v032, |
| unsigned int hratio) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev); |
| int ret; |
| |
| ret = v4l2_ctrl_s_ctrl_int64(mt9v032->pixel_rate, |
| mt9v032->sysclk / hratio); |
| if (ret < 0) |
| dev_warn(&client->dev, "failed to set pixel rate (%d)\n", ret); |
| } |
| |
| 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; |
| if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) |
| mt9v032_configure_pixel_rate(mt9v032, hratio); |
| |
| 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 non multiple |
| * of 2 pixels to ensure a GRBG Bayer pattern. |
| */ |
| rect.left = clamp(ALIGN(crop->rect.left + 1, 2) - 1, |
| MT9V032_COLUMN_START_MIN, |
| MT9V032_COLUMN_START_MAX); |
| rect.top = clamp(ALIGN(crop->rect.top + 1, 2) - 1, |
| 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; |
| if (crop->which == V4L2_SUBDEV_FORMAT_ACTIVE) |
| mt9v032_configure_pixel_rate(mt9v032, 1); |
| } |
| |
| *__crop = rect; |
| crop->rect = rect; |
| |
| return 0; |
| } |
| |
| /* ----------------------------------------------------------------------------- |
| * V4L2 subdev control operations |
| */ |
| |
| #define V4L2_CID_TEST_PATTERN_COLOR (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); |
| u32 freq; |
| 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_HBLANK: |
| mt9v032->hblank = ctrl->val; |
| return mt9v032_update_hblank(mt9v032); |
| |
| case V4L2_CID_VBLANK: |
| return mt9v032_write(client, MT9V032_VERTICAL_BLANKING, |
| ctrl->val); |
| |
| case V4L2_CID_PIXEL_RATE: |
| case V4L2_CID_LINK_FREQ: |
| if (mt9v032->link_freq == NULL) |
| break; |
| |
| freq = mt9v032->pdata->link_freqs[mt9v032->link_freq->val]; |
| mt9v032->pixel_rate->val64 = freq; |
| mt9v032->sysclk = freq; |
| break; |
| |
| case V4L2_CID_TEST_PATTERN: |
| switch (mt9v032->test_pattern->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 = (mt9v032->test_pattern_color->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 char * const mt9v032_test_pattern_menu[] = { |
| "Disabled", |
| "Gray Vertical Shade", |
| "Gray Horizontal Shade", |
| "Gray Diagonal Shade", |
| "Plain", |
| }; |
| |
| static const struct v4l2_ctrl_config mt9v032_test_pattern_color = { |
| .ops = &mt9v032_ctrl_ops, |
| .id = V4L2_CID_TEST_PATTERN_COLOR, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Test Pattern Color", |
| .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); |
| |
| mt9v032_configure_pixel_rate(mt9v032, 1); |
| |
| 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_platform_data *pdata = client->dev.platform_data; |
| 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 = pdata; |
| |
| v4l2_ctrl_handler_init(&mt9v032->ctrls, 10); |
| |
| 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); |
| v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops, |
| V4L2_CID_HBLANK, MT9V032_HORIZONTAL_BLANKING_MIN, |
| MT9V032_HORIZONTAL_BLANKING_MAX, 1, |
| MT9V032_HORIZONTAL_BLANKING_DEF); |
| v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops, |
| V4L2_CID_VBLANK, MT9V032_VERTICAL_BLANKING_MIN, |
| MT9V032_VERTICAL_BLANKING_MAX, 1, |
| MT9V032_VERTICAL_BLANKING_DEF); |
| mt9v032->test_pattern = v4l2_ctrl_new_std_menu_items(&mt9v032->ctrls, |
| &mt9v032_ctrl_ops, V4L2_CID_TEST_PATTERN, |
| ARRAY_SIZE(mt9v032_test_pattern_menu) - 1, 0, 0, |
| mt9v032_test_pattern_menu); |
| mt9v032->test_pattern_color = v4l2_ctrl_new_custom(&mt9v032->ctrls, |
| &mt9v032_test_pattern_color, NULL); |
| |
| v4l2_ctrl_cluster(2, &mt9v032->test_pattern); |
| |
| mt9v032->pixel_rate = |
| v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops, |
| V4L2_CID_PIXEL_RATE, 0, 0, 1, 0); |
| |
| if (pdata && pdata->link_freqs) { |
| unsigned int def = 0; |
| |
| for (i = 0; pdata->link_freqs[i]; ++i) { |
| if (pdata->link_freqs[i] == pdata->link_def_freq) |
| def = i; |
| } |
| |
| mt9v032->link_freq = |
| v4l2_ctrl_new_int_menu(&mt9v032->ctrls, |
| &mt9v032_ctrl_ops, |
| V4L2_CID_LINK_FREQ, i - 1, def, |
| pdata->link_freqs); |
| v4l2_ctrl_cluster(2, &mt9v032->link_freq); |
| } |
| |
| |
| 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; |
| mt9v032->hblank = MT9V032_HORIZONTAL_BLANKING_DEF; |
| mt9v032->sysclk = MT9V032_SYSCLK_FREQ_DEF; |
| |
| 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) { |
| v4l2_ctrl_handler_free(&mt9v032->ctrls); |
| 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_ctrl_handler_free(&mt9v032->ctrls); |
| 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, |
| }; |
| |
| module_i2c_driver(mt9v032_driver); |
| |
| MODULE_DESCRIPTION("Aptina MT9V032 Camera driver"); |
| MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>"); |
| MODULE_LICENSE("GPL"); |