/* * Driver for MT9M111/MT9M112/MT9M131 CMOS Image Sensor from Micron/Aptina * * Copyright (C) 2008, Robert Jarzmik * * 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 #include #include #include #include #include #include #include #include /* * 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");