| /* |
| * Driver for MT9M111/MT9M112/MT9M131 CMOS Image Sensor from Micron/Aptina |
| * |
| * Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr> |
| * |
| * 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/videodev2.h> |
| #include <linux/slab.h> |
| #include <linux/i2c.h> |
| #include <linux/log2.h> |
| #include <linux/gpio.h> |
| #include <linux/delay.h> |
| #include <linux/module.h> |
| |
| #include <media/v4l2-common.h> |
| #include <media/v4l2-chip-ident.h> |
| #include <media/soc_camera.h> |
| |
| /* |
| * MT9M111, MT9M112 and MT9M131: |
| * i2c address is 0x48 or 0x5d (depending on SADDR pin) |
| * The platform has to define i2c_board_info and call i2c_register_board_info() |
| */ |
| |
| /* |
| * Sensor core register addresses (0x000..0x0ff) |
| */ |
| #define MT9M111_CHIP_VERSION 0x000 |
| #define MT9M111_ROW_START 0x001 |
| #define MT9M111_COLUMN_START 0x002 |
| #define MT9M111_WINDOW_HEIGHT 0x003 |
| #define MT9M111_WINDOW_WIDTH 0x004 |
| #define MT9M111_HORIZONTAL_BLANKING_B 0x005 |
| #define MT9M111_VERTICAL_BLANKING_B 0x006 |
| #define MT9M111_HORIZONTAL_BLANKING_A 0x007 |
| #define MT9M111_VERTICAL_BLANKING_A 0x008 |
| #define MT9M111_SHUTTER_WIDTH 0x009 |
| #define MT9M111_ROW_SPEED 0x00a |
| #define MT9M111_EXTRA_DELAY 0x00b |
| #define MT9M111_SHUTTER_DELAY 0x00c |
| #define MT9M111_RESET 0x00d |
| #define MT9M111_READ_MODE_B 0x020 |
| #define MT9M111_READ_MODE_A 0x021 |
| #define MT9M111_FLASH_CONTROL 0x023 |
| #define MT9M111_GREEN1_GAIN 0x02b |
| #define MT9M111_BLUE_GAIN 0x02c |
| #define MT9M111_RED_GAIN 0x02d |
| #define MT9M111_GREEN2_GAIN 0x02e |
| #define MT9M111_GLOBAL_GAIN 0x02f |
| #define MT9M111_CONTEXT_CONTROL 0x0c8 |
| #define MT9M111_PAGE_MAP 0x0f0 |
| #define MT9M111_BYTE_WISE_ADDR 0x0f1 |
| |
| #define MT9M111_RESET_SYNC_CHANGES (1 << 15) |
| #define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9) |
| #define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8) |
| #define MT9M111_RESET_RESET_SOC (1 << 5) |
| #define MT9M111_RESET_OUTPUT_DISABLE (1 << 4) |
| #define MT9M111_RESET_CHIP_ENABLE (1 << 3) |
| #define MT9M111_RESET_ANALOG_STANDBY (1 << 2) |
| #define MT9M111_RESET_RESTART_FRAME (1 << 1) |
| #define MT9M111_RESET_RESET_MODE (1 << 0) |
| |
| #define MT9M111_RM_FULL_POWER_RD (0 << 10) |
| #define MT9M111_RM_LOW_POWER_RD (1 << 10) |
| #define MT9M111_RM_COL_SKIP_4X (1 << 5) |
| #define MT9M111_RM_ROW_SKIP_4X (1 << 4) |
| #define MT9M111_RM_COL_SKIP_2X (1 << 3) |
| #define MT9M111_RM_ROW_SKIP_2X (1 << 2) |
| #define MT9M111_RMB_MIRROR_COLS (1 << 1) |
| #define MT9M111_RMB_MIRROR_ROWS (1 << 0) |
| #define MT9M111_CTXT_CTRL_RESTART (1 << 15) |
| #define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12) |
| #define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10) |
| #define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9) |
| #define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8) |
| #define MT9M111_CTXT_CTRL_XENON_EN (1 << 7) |
| #define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3) |
| #define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2) |
| #define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1) |
| #define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0) |
| |
| /* |
| * Colorpipe register addresses (0x100..0x1ff) |
| */ |
| #define MT9M111_OPER_MODE_CTRL 0x106 |
| #define MT9M111_OUTPUT_FORMAT_CTRL 0x108 |
| #define MT9M111_REDUCER_XZOOM_B 0x1a0 |
| #define MT9M111_REDUCER_XSIZE_B 0x1a1 |
| #define MT9M111_REDUCER_YZOOM_B 0x1a3 |
| #define MT9M111_REDUCER_YSIZE_B 0x1a4 |
| #define MT9M111_REDUCER_XZOOM_A 0x1a6 |
| #define MT9M111_REDUCER_XSIZE_A 0x1a7 |
| #define MT9M111_REDUCER_YZOOM_A 0x1a9 |
| #define MT9M111_REDUCER_YSIZE_A 0x1aa |
| |
| #define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a |
| #define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b |
| |
| #define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14) |
| #define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1) |
| #define MT9M111_OUTFMT_FLIP_BAYER_COL (1 << 9) |
| #define MT9M111_OUTFMT_FLIP_BAYER_ROW (1 << 8) |
| #define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14) |
| #define MT9M111_OUTFMT_BYPASS_IFP (1 << 10) |
| #define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9) |
| #define MT9M111_OUTFMT_RGB (1 << 8) |
| #define MT9M111_OUTFMT_RGB565 (0 << 6) |
| #define MT9M111_OUTFMT_RGB555 (1 << 6) |
| #define MT9M111_OUTFMT_RGB444x (2 << 6) |
| #define MT9M111_OUTFMT_RGBx444 (3 << 6) |
| #define MT9M111_OUTFMT_TST_RAMP_OFF (0 << 4) |
| #define MT9M111_OUTFMT_TST_RAMP_COL (1 << 4) |
| #define MT9M111_OUTFMT_TST_RAMP_ROW (2 << 4) |
| #define MT9M111_OUTFMT_TST_RAMP_FRAME (3 << 4) |
| #define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3) |
| #define MT9M111_OUTFMT_AVG_CHROMA (1 << 2) |
| #define MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN (1 << 1) |
| #define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B (1 << 0) |
| |
| /* |
| * Camera control register addresses (0x200..0x2ff not implemented) |
| */ |
| |
| #define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg) |
| #define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val)) |
| #define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val)) |
| #define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val)) |
| #define reg_mask(reg, val, mask) mt9m111_reg_mask(client, MT9M111_##reg, \ |
| (val), (mask)) |
| |
| #define MT9M111_MIN_DARK_ROWS 8 |
| #define MT9M111_MIN_DARK_COLS 26 |
| #define MT9M111_MAX_HEIGHT 1024 |
| #define MT9M111_MAX_WIDTH 1280 |
| |
| /* MT9M111 has only one fixed colorspace per pixelcode */ |
| struct mt9m111_datafmt { |
| enum v4l2_mbus_pixelcode code; |
| enum v4l2_colorspace colorspace; |
| }; |
| |
| /* Find a data format by a pixel code in an array */ |
| static const struct mt9m111_datafmt *mt9m111_find_datafmt( |
| enum v4l2_mbus_pixelcode code, const struct mt9m111_datafmt *fmt, |
| int n) |
| { |
| int i; |
| for (i = 0; i < n; i++) |
| if (fmt[i].code == code) |
| return fmt + i; |
| |
| return NULL; |
| } |
| |
| static const struct mt9m111_datafmt mt9m111_colour_fmts[] = { |
| {V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG}, |
| {V4L2_MBUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG}, |
| {V4L2_MBUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG}, |
| {V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG}, |
| {V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB}, |
| {V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB}, |
| {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB}, |
| {V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB}, |
| {V4L2_MBUS_FMT_BGR565_2X8_LE, V4L2_COLORSPACE_SRGB}, |
| {V4L2_MBUS_FMT_BGR565_2X8_BE, V4L2_COLORSPACE_SRGB}, |
| {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB}, |
| {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB}, |
| }; |
| |
| enum mt9m111_context { |
| HIGHPOWER = 0, |
| LOWPOWER, |
| }; |
| |
| struct mt9m111 { |
| struct v4l2_subdev subdev; |
| int model; /* V4L2_IDENT_MT9M111 or V4L2_IDENT_MT9M112 code |
| * from v4l2-chip-ident.h */ |
| enum mt9m111_context context; |
| struct v4l2_rect rect; |
| struct mutex power_lock; /* lock to protect power_count */ |
| int power_count; |
| const struct mt9m111_datafmt *fmt; |
| unsigned int gain; |
| unsigned char autoexposure; |
| unsigned char datawidth; |
| unsigned int powered:1; |
| unsigned int hflip:1; |
| unsigned int vflip:1; |
| unsigned int autowhitebalance:1; |
| }; |
| |
| static struct mt9m111 *to_mt9m111(const struct i2c_client *client) |
| { |
| return container_of(i2c_get_clientdata(client), struct mt9m111, subdev); |
| } |
| |
| static int reg_page_map_set(struct i2c_client *client, const u16 reg) |
| { |
| int ret; |
| u16 page; |
| static int lastpage = -1; /* PageMap cache value */ |
| |
| page = (reg >> 8); |
| if (page == lastpage) |
| return 0; |
| if (page > 2) |
| return -EINVAL; |
| |
| ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page)); |
| if (!ret) |
| lastpage = page; |
| return ret; |
| } |
| |
| static int mt9m111_reg_read(struct i2c_client *client, const u16 reg) |
| { |
| int ret; |
| |
| ret = reg_page_map_set(client, reg); |
| if (!ret) |
| ret = swab16(i2c_smbus_read_word_data(client, reg & 0xff)); |
| |
| dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret); |
| return ret; |
| } |
| |
| static int mt9m111_reg_write(struct i2c_client *client, const u16 reg, |
| const u16 data) |
| { |
| int ret; |
| |
| ret = reg_page_map_set(client, reg); |
| if (!ret) |
| ret = i2c_smbus_write_word_data(client, reg & 0xff, |
| swab16(data)); |
| dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret); |
| return ret; |
| } |
| |
| static int mt9m111_reg_set(struct i2c_client *client, const u16 reg, |
| const u16 data) |
| { |
| int ret; |
| |
| ret = mt9m111_reg_read(client, reg); |
| if (ret >= 0) |
| ret = mt9m111_reg_write(client, reg, ret | data); |
| return ret; |
| } |
| |
| static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg, |
| const u16 data) |
| { |
| int ret; |
| |
| ret = mt9m111_reg_read(client, reg); |
| if (ret >= 0) |
| ret = mt9m111_reg_write(client, reg, ret & ~data); |
| return ret; |
| } |
| |
| static int mt9m111_reg_mask(struct i2c_client *client, const u16 reg, |
| const u16 data, const u16 mask) |
| { |
| int ret; |
| |
| ret = mt9m111_reg_read(client, reg); |
| if (ret >= 0) |
| ret = mt9m111_reg_write(client, reg, (ret & ~mask) | data); |
| return ret; |
| } |
| |
| static int mt9m111_set_context(struct mt9m111 *mt9m111, |
| enum mt9m111_context ctxt) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B |
| | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B |
| | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B |
| | MT9M111_CTXT_CTRL_VBLANK_SEL_B |
| | MT9M111_CTXT_CTRL_HBLANK_SEL_B; |
| int valA = MT9M111_CTXT_CTRL_RESTART; |
| |
| if (ctxt == HIGHPOWER) |
| return reg_write(CONTEXT_CONTROL, valB); |
| else |
| return reg_write(CONTEXT_CONTROL, valA); |
| } |
| |
| static int mt9m111_setup_rect(struct mt9m111 *mt9m111, |
| struct v4l2_rect *rect) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| int ret, is_raw_format; |
| int width = rect->width; |
| int height = rect->height; |
| |
| if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 || |
| mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) |
| is_raw_format = 1; |
| else |
| is_raw_format = 0; |
| |
| ret = reg_write(COLUMN_START, rect->left); |
| if (!ret) |
| ret = reg_write(ROW_START, rect->top); |
| |
| if (is_raw_format) { |
| if (!ret) |
| ret = reg_write(WINDOW_WIDTH, width); |
| if (!ret) |
| ret = reg_write(WINDOW_HEIGHT, height); |
| } else { |
| if (!ret) |
| ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH); |
| if (!ret) |
| ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT); |
| if (!ret) |
| ret = reg_write(REDUCER_XSIZE_B, width); |
| if (!ret) |
| ret = reg_write(REDUCER_YSIZE_B, height); |
| if (!ret) |
| ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH); |
| if (!ret) |
| ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT); |
| if (!ret) |
| ret = reg_write(REDUCER_XSIZE_A, width); |
| if (!ret) |
| ret = reg_write(REDUCER_YSIZE_A, height); |
| } |
| |
| return ret; |
| } |
| |
| static int mt9m111_enable(struct mt9m111 *mt9m111) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| int ret; |
| |
| ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE); |
| if (!ret) |
| mt9m111->powered = 1; |
| return ret; |
| } |
| |
| static int mt9m111_reset(struct mt9m111 *mt9m111) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| int ret; |
| |
| ret = reg_set(RESET, MT9M111_RESET_RESET_MODE); |
| if (!ret) |
| ret = reg_set(RESET, MT9M111_RESET_RESET_SOC); |
| if (!ret) |
| ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE |
| | MT9M111_RESET_RESET_SOC); |
| |
| return ret; |
| } |
| |
| static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd) |
| { |
| struct soc_camera_link *icl = to_soc_camera_link(icd); |
| unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING | |
| SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH | |
| SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8; |
| |
| return soc_camera_apply_sensor_flags(icl, flags); |
| } |
| |
| static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f) |
| { |
| return 0; |
| } |
| |
| static int mt9m111_make_rect(struct mt9m111 *mt9m111, |
| struct v4l2_rect *rect) |
| { |
| if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 || |
| mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) { |
| /* Bayer format - even size lengths */ |
| rect->width = ALIGN(rect->width, 2); |
| rect->height = ALIGN(rect->height, 2); |
| /* Let the user play with the starting pixel */ |
| } |
| |
| /* FIXME: the datasheet doesn't specify minimum sizes */ |
| soc_camera_limit_side(&rect->left, &rect->width, |
| MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH); |
| |
| soc_camera_limit_side(&rect->top, &rect->height, |
| MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT); |
| |
| return mt9m111_setup_rect(mt9m111, rect); |
| } |
| |
| static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) |
| { |
| struct v4l2_rect rect = a->c; |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); |
| int ret; |
| |
| dev_dbg(&client->dev, "%s left=%d, top=%d, width=%d, height=%d\n", |
| __func__, rect.left, rect.top, rect.width, rect.height); |
| |
| if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| ret = mt9m111_make_rect(mt9m111, &rect); |
| if (!ret) |
| mt9m111->rect = rect; |
| return ret; |
| } |
| |
| static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) |
| { |
| struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); |
| |
| a->c = mt9m111->rect; |
| a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| |
| return 0; |
| } |
| |
| static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) |
| { |
| if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| a->bounds.left = MT9M111_MIN_DARK_COLS; |
| a->bounds.top = MT9M111_MIN_DARK_ROWS; |
| a->bounds.width = MT9M111_MAX_WIDTH; |
| a->bounds.height = MT9M111_MAX_HEIGHT; |
| a->defrect = a->bounds; |
| a->pixelaspect.numerator = 1; |
| a->pixelaspect.denominator = 1; |
| |
| return 0; |
| } |
| |
| static int mt9m111_g_fmt(struct v4l2_subdev *sd, |
| struct v4l2_mbus_framefmt *mf) |
| { |
| struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); |
| |
| mf->width = mt9m111->rect.width; |
| mf->height = mt9m111->rect.height; |
| mf->code = mt9m111->fmt->code; |
| mf->colorspace = mt9m111->fmt->colorspace; |
| mf->field = V4L2_FIELD_NONE; |
| |
| return 0; |
| } |
| |
| static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111, |
| enum v4l2_mbus_pixelcode code) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| u16 data_outfmt2, mask_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER | |
| MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB | |
| MT9M111_OUTFMT_RGB565 | MT9M111_OUTFMT_RGB555 | |
| MT9M111_OUTFMT_RGB444x | MT9M111_OUTFMT_RGBx444 | |
| MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN | |
| MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B; |
| int ret; |
| |
| switch (code) { |
| case V4L2_MBUS_FMT_SBGGR8_1X8: |
| data_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER | |
| MT9M111_OUTFMT_RGB; |
| break; |
| case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE: |
| data_outfmt2 = MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB; |
| break; |
| case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE: |
| data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555 | |
| MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN; |
| break; |
| case V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE: |
| data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555; |
| break; |
| case V4L2_MBUS_FMT_RGB565_2X8_LE: |
| data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 | |
| MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN; |
| break; |
| case V4L2_MBUS_FMT_RGB565_2X8_BE: |
| data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565; |
| break; |
| case V4L2_MBUS_FMT_BGR565_2X8_BE: |
| data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 | |
| MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B; |
| break; |
| case V4L2_MBUS_FMT_BGR565_2X8_LE: |
| data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 | |
| MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN | |
| MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B; |
| break; |
| case V4L2_MBUS_FMT_UYVY8_2X8: |
| data_outfmt2 = 0; |
| break; |
| case V4L2_MBUS_FMT_VYUY8_2X8: |
| data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B; |
| break; |
| case V4L2_MBUS_FMT_YUYV8_2X8: |
| data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN; |
| break; |
| case V4L2_MBUS_FMT_YVYU8_2X8: |
| data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN | |
| MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B; |
| break; |
| default: |
| dev_err(&client->dev, "Pixel format not handled: %x\n", code); |
| return -EINVAL; |
| } |
| |
| ret = reg_mask(OUTPUT_FORMAT_CTRL2_A, data_outfmt2, |
| mask_outfmt2); |
| if (!ret) |
| ret = reg_mask(OUTPUT_FORMAT_CTRL2_B, data_outfmt2, |
| mask_outfmt2); |
| |
| return ret; |
| } |
| |
| static int mt9m111_s_fmt(struct v4l2_subdev *sd, |
| struct v4l2_mbus_framefmt *mf) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| const struct mt9m111_datafmt *fmt; |
| struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); |
| struct v4l2_rect rect = { |
| .left = mt9m111->rect.left, |
| .top = mt9m111->rect.top, |
| .width = mf->width, |
| .height = mf->height, |
| }; |
| int ret; |
| |
| fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts, |
| ARRAY_SIZE(mt9m111_colour_fmts)); |
| if (!fmt) |
| return -EINVAL; |
| |
| dev_dbg(&client->dev, |
| "%s code=%x left=%d, top=%d, width=%d, height=%d\n", __func__, |
| mf->code, rect.left, rect.top, rect.width, rect.height); |
| |
| ret = mt9m111_make_rect(mt9m111, &rect); |
| if (!ret) |
| ret = mt9m111_set_pixfmt(mt9m111, mf->code); |
| if (!ret) { |
| mt9m111->rect = rect; |
| mt9m111->fmt = fmt; |
| mf->colorspace = fmt->colorspace; |
| } |
| |
| return ret; |
| } |
| |
| static int mt9m111_try_fmt(struct v4l2_subdev *sd, |
| struct v4l2_mbus_framefmt *mf) |
| { |
| struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); |
| const struct mt9m111_datafmt *fmt; |
| bool bayer = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 || |
| mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE; |
| |
| fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts, |
| ARRAY_SIZE(mt9m111_colour_fmts)); |
| if (!fmt) { |
| fmt = mt9m111->fmt; |
| mf->code = fmt->code; |
| } |
| |
| /* |
| * With Bayer format enforce even side lengths, but let the user play |
| * with the starting pixel |
| */ |
| |
| if (mf->height > MT9M111_MAX_HEIGHT) |
| mf->height = MT9M111_MAX_HEIGHT; |
| else if (mf->height < 2) |
| mf->height = 2; |
| else if (bayer) |
| mf->height = ALIGN(mf->height, 2); |
| |
| if (mf->width > MT9M111_MAX_WIDTH) |
| mf->width = MT9M111_MAX_WIDTH; |
| else if (mf->width < 2) |
| mf->width = 2; |
| else if (bayer) |
| mf->width = ALIGN(mf->width, 2); |
| |
| mf->colorspace = fmt->colorspace; |
| |
| return 0; |
| } |
| |
| static int mt9m111_g_chip_ident(struct v4l2_subdev *sd, |
| struct v4l2_dbg_chip_ident *id) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); |
| |
| if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) |
| return -EINVAL; |
| |
| if (id->match.addr != client->addr) |
| return -ENODEV; |
| |
| id->ident = mt9m111->model; |
| id->revision = 0; |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| static int mt9m111_g_register(struct v4l2_subdev *sd, |
| struct v4l2_dbg_register *reg) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int val; |
| |
| if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff) |
| return -EINVAL; |
| if (reg->match.addr != client->addr) |
| return -ENODEV; |
| |
| val = mt9m111_reg_read(client, reg->reg); |
| reg->size = 2; |
| reg->val = (u64)val; |
| |
| if (reg->val > 0xffff) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| static int mt9m111_s_register(struct v4l2_subdev *sd, |
| struct v4l2_dbg_register *reg) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| |
| if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff) |
| return -EINVAL; |
| |
| if (reg->match.addr != client->addr) |
| return -ENODEV; |
| |
| if (mt9m111_reg_write(client, reg->reg, reg->val) < 0) |
| return -EIO; |
| |
| return 0; |
| } |
| #endif |
| |
| static const struct v4l2_queryctrl mt9m111_controls[] = { |
| { |
| .id = V4L2_CID_VFLIP, |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .name = "Flip Verticaly", |
| .minimum = 0, |
| .maximum = 1, |
| .step = 1, |
| .default_value = 0, |
| }, { |
| .id = V4L2_CID_HFLIP, |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .name = "Flip Horizontaly", |
| .minimum = 0, |
| .maximum = 1, |
| .step = 1, |
| .default_value = 0, |
| }, { /* gain = 1/32*val (=>gain=1 if val==32) */ |
| .id = V4L2_CID_GAIN, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Gain", |
| .minimum = 0, |
| .maximum = 63 * 2 * 2, |
| .step = 1, |
| .default_value = 32, |
| .flags = V4L2_CTRL_FLAG_SLIDER, |
| }, { |
| .id = V4L2_CID_EXPOSURE_AUTO, |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .name = "Auto Exposure", |
| .minimum = 0, |
| .maximum = 1, |
| .step = 1, |
| .default_value = 1, |
| } |
| }; |
| |
| static struct soc_camera_ops mt9m111_ops = { |
| .query_bus_param = mt9m111_query_bus_param, |
| .set_bus_param = mt9m111_set_bus_param, |
| .controls = mt9m111_controls, |
| .num_controls = ARRAY_SIZE(mt9m111_controls), |
| }; |
| |
| static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| int ret; |
| |
| if (mt9m111->context == HIGHPOWER) { |
| if (flip) |
| ret = reg_set(READ_MODE_B, mask); |
| else |
| ret = reg_clear(READ_MODE_B, mask); |
| } else { |
| if (flip) |
| ret = reg_set(READ_MODE_A, mask); |
| else |
| ret = reg_clear(READ_MODE_A, mask); |
| } |
| |
| return ret; |
| } |
| |
| static int mt9m111_get_global_gain(struct mt9m111 *mt9m111) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| int data; |
| |
| data = reg_read(GLOBAL_GAIN); |
| if (data >= 0) |
| return (data & 0x2f) * (1 << ((data >> 10) & 1)) * |
| (1 << ((data >> 9) & 1)); |
| return data; |
| } |
| |
| static int mt9m111_set_global_gain(struct mt9m111 *mt9m111, int gain) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| u16 val; |
| |
| if (gain > 63 * 2 * 2) |
| return -EINVAL; |
| |
| mt9m111->gain = gain; |
| if ((gain >= 64 * 2) && (gain < 63 * 2 * 2)) |
| val = (1 << 10) | (1 << 9) | (gain / 4); |
| else if ((gain >= 64) && (gain < 64 * 2)) |
| val = (1 << 9) | (gain / 2); |
| else |
| val = gain; |
| |
| return reg_write(GLOBAL_GAIN, val); |
| } |
| |
| static int mt9m111_set_autoexposure(struct mt9m111 *mt9m111, int on) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| int ret; |
| |
| if (on) |
| ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN); |
| else |
| ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN); |
| |
| if (!ret) |
| mt9m111->autoexposure = on; |
| |
| return ret; |
| } |
| |
| static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| int ret; |
| |
| if (on) |
| ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN); |
| else |
| ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN); |
| |
| if (!ret) |
| mt9m111->autowhitebalance = on; |
| |
| return ret; |
| } |
| |
| static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); |
| int data; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_VFLIP: |
| if (mt9m111->context == HIGHPOWER) |
| data = reg_read(READ_MODE_B); |
| else |
| data = reg_read(READ_MODE_A); |
| |
| if (data < 0) |
| return -EIO; |
| ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS); |
| break; |
| case V4L2_CID_HFLIP: |
| if (mt9m111->context == HIGHPOWER) |
| data = reg_read(READ_MODE_B); |
| else |
| data = reg_read(READ_MODE_A); |
| |
| if (data < 0) |
| return -EIO; |
| ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS); |
| break; |
| case V4L2_CID_GAIN: |
| data = mt9m111_get_global_gain(mt9m111); |
| if (data < 0) |
| return data; |
| ctrl->value = data; |
| break; |
| case V4L2_CID_EXPOSURE_AUTO: |
| ctrl->value = mt9m111->autoexposure; |
| break; |
| case V4L2_CID_AUTO_WHITE_BALANCE: |
| ctrl->value = mt9m111->autowhitebalance; |
| break; |
| } |
| return 0; |
| } |
| |
| static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
| { |
| struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); |
| const struct v4l2_queryctrl *qctrl; |
| int ret; |
| |
| qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id); |
| if (!qctrl) |
| return -EINVAL; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_VFLIP: |
| mt9m111->vflip = ctrl->value; |
| ret = mt9m111_set_flip(mt9m111, ctrl->value, |
| MT9M111_RMB_MIRROR_ROWS); |
| break; |
| case V4L2_CID_HFLIP: |
| mt9m111->hflip = ctrl->value; |
| ret = mt9m111_set_flip(mt9m111, ctrl->value, |
| MT9M111_RMB_MIRROR_COLS); |
| break; |
| case V4L2_CID_GAIN: |
| ret = mt9m111_set_global_gain(mt9m111, ctrl->value); |
| break; |
| case V4L2_CID_EXPOSURE_AUTO: |
| ret = mt9m111_set_autoexposure(mt9m111, ctrl->value); |
| break; |
| case V4L2_CID_AUTO_WHITE_BALANCE: |
| ret = mt9m111_set_autowhitebalance(mt9m111, ctrl->value); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static int mt9m111_suspend(struct mt9m111 *mt9m111) |
| { |
| mt9m111->gain = mt9m111_get_global_gain(mt9m111); |
| |
| return 0; |
| } |
| |
| static void mt9m111_restore_state(struct mt9m111 *mt9m111) |
| { |
| mt9m111_set_context(mt9m111, mt9m111->context); |
| mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code); |
| mt9m111_setup_rect(mt9m111, &mt9m111->rect); |
| mt9m111_set_flip(mt9m111, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS); |
| mt9m111_set_flip(mt9m111, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS); |
| mt9m111_set_global_gain(mt9m111, mt9m111->gain); |
| mt9m111_set_autoexposure(mt9m111, mt9m111->autoexposure); |
| mt9m111_set_autowhitebalance(mt9m111, mt9m111->autowhitebalance); |
| } |
| |
| static int mt9m111_resume(struct mt9m111 *mt9m111) |
| { |
| int ret = 0; |
| |
| if (mt9m111->powered) { |
| ret = mt9m111_enable(mt9m111); |
| if (!ret) |
| ret = mt9m111_reset(mt9m111); |
| if (!ret) |
| mt9m111_restore_state(mt9m111); |
| } |
| return ret; |
| } |
| |
| static int mt9m111_init(struct mt9m111 *mt9m111) |
| { |
| struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); |
| int ret; |
| |
| mt9m111->context = HIGHPOWER; |
| ret = mt9m111_enable(mt9m111); |
| if (!ret) |
| ret = mt9m111_reset(mt9m111); |
| if (!ret) |
| ret = mt9m111_set_context(mt9m111, mt9m111->context); |
| if (!ret) |
| ret = mt9m111_set_autoexposure(mt9m111, mt9m111->autoexposure); |
| if (ret) |
| dev_err(&client->dev, "mt9m111 init failed: %d\n", ret); |
| return ret; |
| } |
| |
| /* |
| * Interface active, can use i2c. If it fails, it can indeed mean, that |
| * this wasn't our capture interface, so, we wait for the right one |
| */ |
| static int mt9m111_video_probe(struct soc_camera_device *icd, |
| struct i2c_client *client) |
| { |
| struct mt9m111 *mt9m111 = to_mt9m111(client); |
| s32 data; |
| int ret; |
| |
| /* We must have a parent by now. And it cannot be a wrong one. */ |
| BUG_ON(!icd->parent || |
| to_soc_camera_host(icd->parent)->nr != icd->iface); |
| |
| mt9m111->autoexposure = 1; |
| mt9m111->autowhitebalance = 1; |
| |
| data = reg_read(CHIP_VERSION); |
| |
| switch (data) { |
| case 0x143a: /* MT9M111 or MT9M131 */ |
| mt9m111->model = V4L2_IDENT_MT9M111; |
| dev_info(&client->dev, |
| "Detected a MT9M111/MT9M131 chip ID %x\n", data); |
| break; |
| case 0x148c: /* MT9M112 */ |
| mt9m111->model = V4L2_IDENT_MT9M112; |
| dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data); |
| break; |
| default: |
| ret = -ENODEV; |
| dev_err(&client->dev, |
| "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n", |
| data); |
| goto ei2c; |
| } |
| |
| ret = mt9m111_init(mt9m111); |
| |
| ei2c: |
| return ret; |
| } |
| |
| static int mt9m111_s_power(struct v4l2_subdev *sd, int on) |
| { |
| struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); |
| struct i2c_client *client = v4l2_get_subdevdata(sd); |
| int ret = 0; |
| |
| mutex_lock(&mt9m111->power_lock); |
| |
| /* |
| * If the power count is modified from 0 to != 0 or from != 0 to 0, |
| * update the power state. |
| */ |
| if (mt9m111->power_count == !on) { |
| if (on) { |
| ret = mt9m111_resume(mt9m111); |
| if (ret) { |
| dev_err(&client->dev, |
| "Failed to resume the sensor: %d\n", ret); |
| goto out; |
| } |
| } else { |
| mt9m111_suspend(mt9m111); |
| } |
| } |
| |
| /* Update the power count. */ |
| mt9m111->power_count += on ? 1 : -1; |
| WARN_ON(mt9m111->power_count < 0); |
| |
| out: |
| mutex_unlock(&mt9m111->power_lock); |
| return ret; |
| } |
| |
| static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = { |
| .g_ctrl = mt9m111_g_ctrl, |
| .s_ctrl = mt9m111_s_ctrl, |
| .g_chip_ident = mt9m111_g_chip_ident, |
| .s_power = mt9m111_s_power, |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| .g_register = mt9m111_g_register, |
| .s_register = mt9m111_s_register, |
| #endif |
| }; |
| |
| static int mt9m111_enum_fmt(struct v4l2_subdev *sd, unsigned int index, |
| enum v4l2_mbus_pixelcode *code) |
| { |
| if (index >= ARRAY_SIZE(mt9m111_colour_fmts)) |
| return -EINVAL; |
| |
| *code = mt9m111_colour_fmts[index].code; |
| return 0; |
| } |
| |
| static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = { |
| .s_mbus_fmt = mt9m111_s_fmt, |
| .g_mbus_fmt = mt9m111_g_fmt, |
| .try_mbus_fmt = mt9m111_try_fmt, |
| .s_crop = mt9m111_s_crop, |
| .g_crop = mt9m111_g_crop, |
| .cropcap = mt9m111_cropcap, |
| .enum_mbus_fmt = mt9m111_enum_fmt, |
| }; |
| |
| static struct v4l2_subdev_ops mt9m111_subdev_ops = { |
| .core = &mt9m111_subdev_core_ops, |
| .video = &mt9m111_subdev_video_ops, |
| }; |
| |
| static int mt9m111_probe(struct i2c_client *client, |
| const struct i2c_device_id *did) |
| { |
| struct mt9m111 *mt9m111; |
| struct soc_camera_device *icd = client->dev.platform_data; |
| struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); |
| struct soc_camera_link *icl; |
| int ret; |
| |
| if (!icd) { |
| dev_err(&client->dev, "mt9m111: soc-camera data missing!\n"); |
| return -EINVAL; |
| } |
| |
| icl = to_soc_camera_link(icd); |
| if (!icl) { |
| dev_err(&client->dev, "mt9m111: driver needs platform data\n"); |
| return -EINVAL; |
| } |
| |
| if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { |
| dev_warn(&adapter->dev, |
| "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); |
| return -EIO; |
| } |
| |
| mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL); |
| if (!mt9m111) |
| return -ENOMEM; |
| |
| v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops); |
| |
| /* Second stage probe - when a capture adapter is there */ |
| icd->ops = &mt9m111_ops; |
| |
| mt9m111->rect.left = MT9M111_MIN_DARK_COLS; |
| mt9m111->rect.top = MT9M111_MIN_DARK_ROWS; |
| mt9m111->rect.width = MT9M111_MAX_WIDTH; |
| mt9m111->rect.height = MT9M111_MAX_HEIGHT; |
| mt9m111->fmt = &mt9m111_colour_fmts[0]; |
| |
| ret = mt9m111_video_probe(icd, client); |
| if (ret) { |
| icd->ops = NULL; |
| kfree(mt9m111); |
| } |
| |
| return ret; |
| } |
| |
| static int mt9m111_remove(struct i2c_client *client) |
| { |
| struct mt9m111 *mt9m111 = to_mt9m111(client); |
| struct soc_camera_device *icd = client->dev.platform_data; |
| |
| icd->ops = NULL; |
| kfree(mt9m111); |
| |
| return 0; |
| } |
| |
| static const struct i2c_device_id mt9m111_id[] = { |
| { "mt9m111", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, mt9m111_id); |
| |
| static struct i2c_driver mt9m111_i2c_driver = { |
| .driver = { |
| .name = "mt9m111", |
| }, |
| .probe = mt9m111_probe, |
| .remove = mt9m111_remove, |
| .id_table = mt9m111_id, |
| }; |
| |
| static int __init mt9m111_mod_init(void) |
| { |
| return i2c_add_driver(&mt9m111_i2c_driver); |
| } |
| |
| static void __exit mt9m111_mod_exit(void) |
| { |
| i2c_del_driver(&mt9m111_i2c_driver); |
| } |
| |
| module_init(mt9m111_mod_init); |
| module_exit(mt9m111_mod_exit); |
| |
| MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver"); |
| MODULE_AUTHOR("Robert Jarzmik"); |
| MODULE_LICENSE("GPL"); |