/* * Driver for MT9M111/MT9M112 CMOS Image Sensor from Micron * * 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 <media/v4l2-common.h> #include <media/v4l2-chip-ident.h> #include <media/soc_camera.h> /* * mt9m111 and mt9m112 i2c address is 0x5d or 0x48 (depending on SAddr pin) * The platform has to define i2c_board_info and call i2c_register_board_info() */ /* mt9m111: Sensor register addresses */ #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_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) /* * mt9m111: 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_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 (0x0 << 6) #define MT9M111_OUTFMT_RGB555 (0x1 << 6) #define MT9M111_OUTFMT_RGB444x (0x2 << 6) #define MT9M111_OUTFMT_RGBx444 (0x3 << 6) #define MT9M111_OUTFMT_TST_RAMP_OFF (0x0 << 4) #define MT9M111_OUTFMT_TST_RAMP_COL (0x1 << 4) #define MT9M111_OUTFMT_TST_RAMP_ROW (0x2 << 4) #define MT9M111_OUTFMT_TST_RAMP_FRAME (0x3 << 4) #define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3) #define MT9M111_OUTFMT_AVG_CHROMA (1 << 2) #define MT9M111_OUTFMT_SWAP_YCbCr_C_Y (1 << 1) #define MT9M111_OUTFMT_SWAP_RGB_EVEN (1 << 1) #define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr (1 << 0) /* * mt9m111: 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 MT9M111_MIN_DARK_ROWS 8 #define MT9M111_MIN_DARK_COLS 24 #define MT9M111_MAX_HEIGHT 1024 #define MT9M111_MAX_WIDTH 1280 #define COL_FMT(_name, _depth, _fourcc, _colorspace) \ { .name = _name, .depth = _depth, .fourcc = _fourcc, \ .colorspace = _colorspace } #define RGB_FMT(_name, _depth, _fourcc) \ COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_SRGB) #define JPG_FMT(_name, _depth, _fourcc) \ COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_JPEG) static const struct soc_camera_data_format mt9m111_colour_formats[] = { JPG_FMT("CbYCrY 16 bit", 16, V4L2_PIX_FMT_UYVY), JPG_FMT("CrYCbY 16 bit", 16, V4L2_PIX_FMT_VYUY), JPG_FMT("YCbYCr 16 bit", 16, V4L2_PIX_FMT_YUYV), JPG_FMT("YCrYCb 16 bit", 16, V4L2_PIX_FMT_YVYU), RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565), RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555), RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16), RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8), }; enum mt9m111_context { HIGHPOWER = 0, LOWPOWER, }; struct mt9m111 { struct i2c_client *client; struct soc_camera_device icd; int model; /* V4L2_IDENT_MT9M11x* codes from v4l2-chip-ident.h */ enum mt9m111_context context; struct v4l2_rect rect; u32 pixfmt; unsigned char autoexposure; unsigned char datawidth; unsigned int powered:1; unsigned int hflip:1; unsigned int vflip:1; unsigned int swap_rgb_even_odd:1; unsigned int swap_rgb_red_blue:1; unsigned int swap_yuv_y_chromas:1; unsigned int swap_yuv_cb_cr:1; unsigned int autowhitebalance:1; }; 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); return mt9m111_reg_write(client, reg, ret & ~data); } static int mt9m111_set_context(struct soc_camera_device *icd, enum mt9m111_context ctxt) { struct i2c_client *client = to_i2c_client(icd->control); 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 soc_camera_device *icd, struct v4l2_rect *rect) { struct i2c_client *client = to_i2c_client(icd->control); struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); int ret, is_raw_format; int width = rect->width; int height = rect->height; if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8) || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16)) 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_setup_pixfmt(struct soc_camera_device *icd, u16 outfmt) { struct i2c_client *client = to_i2c_client(icd->control); int ret; ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt); if (!ret) ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt); return ret; } static int mt9m111_setfmt_bayer8(struct soc_camera_device *icd) { return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER); } static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd) { return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP); } static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); int val = 0; if (mt9m111->swap_rgb_red_blue) val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr; if (mt9m111->swap_rgb_even_odd) val |= MT9M111_OUTFMT_SWAP_RGB_EVEN; val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565; return mt9m111_setup_pixfmt(icd, val); } static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); int val = 0; if (mt9m111->swap_rgb_red_blue) val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr; if (mt9m111->swap_rgb_even_odd) val |= MT9M111_OUTFMT_SWAP_RGB_EVEN; val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555; return mt9m111_setup_pixfmt(icd, val); } static int mt9m111_setfmt_yuv(struct soc_camera_device *icd) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); int val = 0; if (mt9m111->swap_yuv_cb_cr) val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr; if (mt9m111->swap_yuv_y_chromas) val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y; return mt9m111_setup_pixfmt(icd, val); } static int mt9m111_enable(struct soc_camera_device *icd) { struct i2c_client *client = to_i2c_client(icd->control); struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); struct soc_camera_link *icl = client->dev.platform_data; int ret; if (icl->power) { ret = icl->power(&client->dev, 1); if (ret < 0) { dev_err(icd->vdev->parent, "Platform failed to power-on the camera.\n"); return ret; } } ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE); if (!ret) mt9m111->powered = 1; return ret; } static int mt9m111_disable(struct soc_camera_device *icd) { struct i2c_client *client = to_i2c_client(icd->control); struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); struct soc_camera_link *icl = client->dev.platform_data; int ret; ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE); if (!ret) mt9m111->powered = 0; if (icl->power) icl->power(&client->dev, 0); return ret; } static int mt9m111_reset(struct soc_camera_device *icd) { struct i2c_client *client = to_i2c_client(icd->control); struct soc_camera_link *icl = client->dev.platform_data; 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); if (icl->reset) icl->reset(&client->dev); return ret; } static int mt9m111_start_capture(struct soc_camera_device *icd) { return 0; } static int mt9m111_stop_capture(struct soc_camera_device *icd) { return 0; } static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); struct soc_camera_link *icl = mt9m111->client->dev.platform_data; 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_set_crop(struct soc_camera_device *icd, struct v4l2_rect *rect) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); int ret; dev_dbg(&icd->dev, "%s left=%d, top=%d, width=%d, height=%d\n", __func__, rect->left, rect->top, rect->width, rect->height); ret = mt9m111_setup_rect(icd, rect); if (!ret) mt9m111->rect = *rect; return ret; } static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); int ret; switch (pixfmt) { case V4L2_PIX_FMT_SBGGR8: ret = mt9m111_setfmt_bayer8(icd); break; case V4L2_PIX_FMT_SBGGR16: ret = mt9m111_setfmt_bayer10(icd); break; case V4L2_PIX_FMT_RGB555: ret = mt9m111_setfmt_rgb555(icd); break; case V4L2_PIX_FMT_RGB565: ret = mt9m111_setfmt_rgb565(icd); break; case V4L2_PIX_FMT_UYVY: mt9m111->swap_yuv_y_chromas = 0; mt9m111->swap_yuv_cb_cr = 0; ret = mt9m111_setfmt_yuv(icd); break; case V4L2_PIX_FMT_VYUY: mt9m111->swap_yuv_y_chromas = 0; mt9m111->swap_yuv_cb_cr = 1; ret = mt9m111_setfmt_yuv(icd); break; case V4L2_PIX_FMT_YUYV: mt9m111->swap_yuv_y_chromas = 1; mt9m111->swap_yuv_cb_cr = 0; ret = mt9m111_setfmt_yuv(icd); break; case V4L2_PIX_FMT_YVYU: mt9m111->swap_yuv_y_chromas = 1; mt9m111->swap_yuv_cb_cr = 1; ret = mt9m111_setfmt_yuv(icd); break; default: dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt); ret = -EINVAL; } if (!ret) mt9m111->pixfmt = pixfmt; return ret; } static int mt9m111_set_fmt(struct soc_camera_device *icd, struct v4l2_format *f) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); struct v4l2_pix_format *pix = &f->fmt.pix; struct v4l2_rect rect = { .left = mt9m111->rect.left, .top = mt9m111->rect.top, .width = pix->width, .height = pix->height, }; int ret; dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n", __func__, pix->pixelformat, rect.left, rect.top, rect.width, rect.height); ret = mt9m111_setup_rect(icd, &rect); if (!ret) ret = mt9m111_set_pixfmt(icd, pix->pixelformat); if (!ret) mt9m111->rect = rect; return ret; } static int mt9m111_try_fmt(struct soc_camera_device *icd, struct v4l2_format *f) { struct v4l2_pix_format *pix = &f->fmt.pix; if (pix->height > MT9M111_MAX_HEIGHT) pix->height = MT9M111_MAX_HEIGHT; if (pix->width > MT9M111_MAX_WIDTH) pix->width = MT9M111_MAX_WIDTH; return 0; } static int mt9m111_get_chip_id(struct soc_camera_device *icd, struct v4l2_dbg_chip_ident *id) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) return -EINVAL; if (id->match.addr != mt9m111->client->addr) return -ENODEV; id->ident = mt9m111->model; id->revision = 0; return 0; } #ifdef CONFIG_VIDEO_ADV_DEBUG static int mt9m111_get_register(struct soc_camera_device *icd, struct v4l2_dbg_register *reg) { int val; struct i2c_client *client = to_i2c_client(icd->control); 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_set_register(struct soc_camera_device *icd, struct v4l2_dbg_register *reg) { struct i2c_client *client = to_i2c_client(icd->control); 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 int mt9m111_video_probe(struct soc_camera_device *); static void mt9m111_video_remove(struct soc_camera_device *); static int mt9m111_get_control(struct soc_camera_device *, struct v4l2_control *); static int mt9m111_set_control(struct soc_camera_device *, struct v4l2_control *); static int mt9m111_resume(struct soc_camera_device *icd); static int mt9m111_init(struct soc_camera_device *icd); static int mt9m111_release(struct soc_camera_device *icd); static struct soc_camera_ops mt9m111_ops = { .owner = THIS_MODULE, .probe = mt9m111_video_probe, .remove = mt9m111_video_remove, .init = mt9m111_init, .resume = mt9m111_resume, .release = mt9m111_release, .start_capture = mt9m111_start_capture, .stop_capture = mt9m111_stop_capture, .set_crop = mt9m111_set_crop, .set_fmt = mt9m111_set_fmt, .try_fmt = mt9m111_try_fmt, .query_bus_param = mt9m111_query_bus_param, .set_bus_param = mt9m111_set_bus_param, .controls = mt9m111_controls, .num_controls = ARRAY_SIZE(mt9m111_controls), .get_control = mt9m111_get_control, .set_control = mt9m111_set_control, .get_chip_id = mt9m111_get_chip_id, #ifdef CONFIG_VIDEO_ADV_DEBUG .get_register = mt9m111_get_register, .set_register = mt9m111_set_register, #endif }; static int mt9m111_set_flip(struct soc_camera_device *icd, int flip, int mask) { struct i2c_client *client = to_i2c_client(icd->control); struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); 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 soc_camera_device *icd) { struct i2c_client *client = to_i2c_client(icd->control); 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 soc_camera_device *icd, int gain) { struct i2c_client *client = to_i2c_client(icd->control); u16 val; if (gain > 63 * 2 * 2) return -EINVAL; icd->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 soc_camera_device *icd, int on) { struct i2c_client *client = to_i2c_client(icd->control); struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); 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 soc_camera_device *icd, int on) { struct i2c_client *client = to_i2c_client(icd->control); struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); 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_get_control(struct soc_camera_device *icd, struct v4l2_control *ctrl) { struct i2c_client *client = to_i2c_client(icd->control); struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); 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(icd); 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_set_control(struct soc_camera_device *icd, struct v4l2_control *ctrl) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); 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(icd, ctrl->value, MT9M111_RMB_MIRROR_ROWS); break; case V4L2_CID_HFLIP: mt9m111->hflip = ctrl->value; ret = mt9m111_set_flip(icd, ctrl->value, MT9M111_RMB_MIRROR_COLS); break; case V4L2_CID_GAIN: ret = mt9m111_set_global_gain(icd, ctrl->value); break; case V4L2_CID_EXPOSURE_AUTO: ret = mt9m111_set_autoexposure(icd, ctrl->value); break; case V4L2_CID_AUTO_WHITE_BALANCE: ret = mt9m111_set_autowhitebalance(icd, ctrl->value); break; default: ret = -EINVAL; } return ret; } static int mt9m111_restore_state(struct soc_camera_device *icd) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); mt9m111_set_context(icd, mt9m111->context); mt9m111_set_pixfmt(icd, mt9m111->pixfmt); mt9m111_setup_rect(icd, &mt9m111->rect); mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS); mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS); mt9m111_set_global_gain(icd, icd->gain); mt9m111_set_autoexposure(icd, mt9m111->autoexposure); mt9m111_set_autowhitebalance(icd, mt9m111->autowhitebalance); return 0; } static int mt9m111_resume(struct soc_camera_device *icd) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); int ret = 0; if (mt9m111->powered) { ret = mt9m111_enable(icd); if (!ret) ret = mt9m111_reset(icd); if (!ret) ret = mt9m111_restore_state(icd); } return ret; } static int mt9m111_init(struct soc_camera_device *icd) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); int ret; mt9m111->context = HIGHPOWER; ret = mt9m111_enable(icd); if (!ret) ret = mt9m111_reset(icd); if (!ret) ret = mt9m111_set_context(icd, mt9m111->context); if (!ret) ret = mt9m111_set_autoexposure(icd, mt9m111->autoexposure); if (ret) dev_err(&icd->dev, "mt9m11x init failed: %d\n", ret); return ret; } static int mt9m111_release(struct soc_camera_device *icd) { int ret; ret = mt9m111_disable(icd); if (ret < 0) dev_err(&icd->dev, "mt9m11x release 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 = to_i2c_client(icd->control); struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); s32 data; int ret; /* * We must have a parent by now. And it cannot be a wrong one. * So this entire test is completely redundant. */ if (!icd->dev.parent || to_soc_camera_host(icd->dev.parent)->nr != icd->iface) return -ENODEV; ret = mt9m111_enable(icd); if (ret) goto ei2c; ret = mt9m111_reset(icd); if (ret) goto ei2c; data = reg_read(CHIP_VERSION); switch (data) { case 0x143a: /* MT9M111 */ mt9m111->model = V4L2_IDENT_MT9M111; break; case 0x148c: /* MT9M112 */ mt9m111->model = V4L2_IDENT_MT9M112; break; default: ret = -ENODEV; dev_err(&icd->dev, "No MT9M11x chip detected, register read %x\n", data); goto ei2c; } icd->formats = mt9m111_colour_formats; icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats); dev_info(&icd->dev, "Detected a MT9M11x chip ID %x\n", data); ret = soc_camera_video_start(icd); if (ret) goto eisis; mt9m111->autoexposure = 1; mt9m111->autowhitebalance = 1; mt9m111->swap_rgb_even_odd = 1; mt9m111->swap_rgb_red_blue = 1; return 0; eisis: ei2c: return ret; } static void mt9m111_video_remove(struct soc_camera_device *icd) { struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr, mt9m111->icd.dev.parent, mt9m111->icd.vdev); soc_camera_video_stop(&mt9m111->icd); } static int mt9m111_probe(struct i2c_client *client, const struct i2c_device_id *did) { struct mt9m111 *mt9m111; struct soc_camera_device *icd; struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); struct soc_camera_link *icl = client->dev.platform_data; int ret; if (!icl) { dev_err(&client->dev, "MT9M11x 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; mt9m111->client = client; i2c_set_clientdata(client, mt9m111); /* Second stage probe - when a capture adapter is there */ icd = &mt9m111->icd; icd->ops = &mt9m111_ops; icd->control = &client->dev; icd->x_min = MT9M111_MIN_DARK_COLS; icd->y_min = MT9M111_MIN_DARK_ROWS; icd->x_current = icd->x_min; icd->y_current = icd->y_min; icd->width_min = MT9M111_MIN_DARK_ROWS; icd->width_max = MT9M111_MAX_WIDTH; icd->height_min = MT9M111_MIN_DARK_COLS; icd->height_max = MT9M111_MAX_HEIGHT; icd->y_skip_top = 0; icd->iface = icl->bus_id; ret = soc_camera_device_register(icd); if (ret) goto eisdr; return 0; eisdr: kfree(mt9m111); return ret; } static int mt9m111_remove(struct i2c_client *client) { struct mt9m111 *mt9m111 = i2c_get_clientdata(client); soc_camera_device_unregister(&mt9m111->icd); 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 MT9M111/MT9M112 Camera driver"); MODULE_AUTHOR("Robert Jarzmik"); MODULE_LICENSE("GPL");