diff options
Diffstat (limited to 'drivers/media/i2c/soc_camera/mt9m111.c')
| -rw-r--r-- | drivers/media/i2c/soc_camera/mt9m111.c | 1038 |
1 files changed, 1038 insertions, 0 deletions
diff --git a/drivers/media/i2c/soc_camera/mt9m111.c b/drivers/media/i2c/soc_camera/mt9m111.c new file mode 100644 index 00000000000..ccf59406a17 --- /dev/null +++ b/drivers/media/i2c/soc_camera/mt9m111.c @@ -0,0 +1,1038 @@ +/* + * 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/v4l2-mediabus.h> +#include <linux/module.h> + +#include <media/soc_camera.h> +#include <media/v4l2-clk.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ctrls.h> + +/* + * MT9M111, MT9M112 and MT9M131: + * i2c address is 0x48 or 0x5d (depending on SADDR pin) + * The platform has to define struct i2c_board_info objects and link to them + * from struct soc_camera_host_desc + */ + +/* + * 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 + +struct mt9m111_context { + u16 read_mode; + u16 blanking_h; + u16 blanking_v; + u16 reducer_xzoom; + u16 reducer_yzoom; + u16 reducer_xsize; + u16 reducer_ysize; + u16 output_fmt_ctrl2; + u16 control; +}; + +static struct mt9m111_context context_a = { + .read_mode = MT9M111_READ_MODE_A, + .blanking_h = MT9M111_HORIZONTAL_BLANKING_A, + .blanking_v = MT9M111_VERTICAL_BLANKING_A, + .reducer_xzoom = MT9M111_REDUCER_XZOOM_A, + .reducer_yzoom = MT9M111_REDUCER_YZOOM_A, + .reducer_xsize = MT9M111_REDUCER_XSIZE_A, + .reducer_ysize = MT9M111_REDUCER_YSIZE_A, + .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_A, + .control = MT9M111_CTXT_CTRL_RESTART, +}; + +static struct mt9m111_context context_b = { + .read_mode = MT9M111_READ_MODE_B, + .blanking_h = MT9M111_HORIZONTAL_BLANKING_B, + .blanking_v = MT9M111_VERTICAL_BLANKING_B, + .reducer_xzoom = MT9M111_REDUCER_XZOOM_B, + .reducer_yzoom = MT9M111_REDUCER_YZOOM_B, + .reducer_xsize = MT9M111_REDUCER_XSIZE_B, + .reducer_ysize = MT9M111_REDUCER_YSIZE_B, + .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_B, + .control = 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, +}; + +/* MT9M111 has only one fixed colorspace per pixelcode */ +struct mt9m111_datafmt { + enum v4l2_mbus_pixelcode code; + enum v4l2_colorspace colorspace; +}; + +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}, +}; + +struct mt9m111 { + struct v4l2_subdev subdev; + struct v4l2_ctrl_handler hdl; + struct v4l2_ctrl *gain; + struct mt9m111_context *ctx; + struct v4l2_rect rect; /* cropping rectangle */ + struct v4l2_clk *clk; + unsigned int width; /* output */ + unsigned int height; /* sizes */ + struct mutex power_lock; /* lock to protect power_count */ + int power_count; + const struct mt9m111_datafmt *fmt; + int lastpage; /* PageMap cache value */ +}; + +/* Find a data format by a pixel code */ +static const struct mt9m111_datafmt *mt9m111_find_datafmt(struct mt9m111 *mt9m111, + enum v4l2_mbus_pixelcode code) +{ + int i; + for (i = 0; i < ARRAY_SIZE(mt9m111_colour_fmts); i++) + if (mt9m111_colour_fmts[i].code == code) + return mt9m111_colour_fmts + i; + + return mt9m111->fmt; +} + +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; + struct mt9m111 *mt9m111 = to_mt9m111(client); + + page = (reg >> 8); + if (page == mt9m111->lastpage) + return 0; + if (page > 2) + return -EINVAL; + + ret = i2c_smbus_write_word_swapped(client, MT9M111_PAGE_MAP, page); + if (!ret) + mt9m111->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 = i2c_smbus_read_word_swapped(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_swapped(client, reg & 0xff, 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, + struct mt9m111_context *ctx) +{ + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + return reg_write(CONTEXT_CONTROL, ctx->control); +} + +static int mt9m111_setup_rect_ctx(struct mt9m111 *mt9m111, + struct mt9m111_context *ctx, struct v4l2_rect *rect, + unsigned int width, unsigned int height) +{ + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + int ret = mt9m111_reg_write(client, ctx->reducer_xzoom, rect->width); + if (!ret) + ret = mt9m111_reg_write(client, ctx->reducer_yzoom, rect->height); + if (!ret) + ret = mt9m111_reg_write(client, ctx->reducer_xsize, width); + if (!ret) + ret = mt9m111_reg_write(client, ctx->reducer_ysize, height); + return ret; +} + +static int mt9m111_setup_geometry(struct mt9m111 *mt9m111, struct v4l2_rect *rect, + int width, int height, enum v4l2_mbus_pixelcode code) +{ + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + int ret; + + ret = reg_write(COLUMN_START, rect->left); + if (!ret) + ret = reg_write(ROW_START, rect->top); + + if (!ret) + ret = reg_write(WINDOW_WIDTH, rect->width); + if (!ret) + ret = reg_write(WINDOW_HEIGHT, rect->height); + + if (code != V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) { + /* IFP in use, down-scaling possible */ + if (!ret) + ret = mt9m111_setup_rect_ctx(mt9m111, &context_b, + rect, width, height); + if (!ret) + ret = mt9m111_setup_rect_ctx(mt9m111, &context_a, + rect, width, height); + } + + dev_dbg(&client->dev, "%s(%x): %ux%u@%u:%u -> %ux%u = %d\n", + __func__, code, rect->width, rect->height, rect->left, rect->top, + width, height, ret); + + return ret; +} + +static int mt9m111_enable(struct mt9m111 *mt9m111) +{ + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + return reg_write(RESET, MT9M111_RESET_CHIP_ENABLE); +} + +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 int mt9m111_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a) +{ + struct v4l2_rect rect = a->c; + struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); + int width, height; + int ret; + + if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + 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); + + width = min(mt9m111->width, rect.width); + height = min(mt9m111->height, rect.height); + + ret = mt9m111_setup_geometry(mt9m111, &rect, width, height, mt9m111->fmt->code); + if (!ret) { + mt9m111->rect = rect; + mt9m111->width = width; + mt9m111->height = height; + } + + 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->width; + mf->height = mt9m111->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 = mt9m111_reg_mask(client, context_a.output_fmt_ctrl2, + data_outfmt2, mask_outfmt2); + if (!ret) + ret = mt9m111_reg_mask(client, context_b.output_fmt_ctrl2, + data_outfmt2, mask_outfmt2); + + return ret; +} + +static int mt9m111_try_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); + const struct mt9m111_datafmt *fmt; + struct v4l2_rect *rect = &mt9m111->rect; + bool bayer; + + fmt = mt9m111_find_datafmt(mt9m111, mf->code); + + bayer = fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 || + fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE; + + /* + * With Bayer format enforce even side lengths, but let the user play + * with the starting pixel + */ + if (bayer) { + rect->width = ALIGN(rect->width, 2); + rect->height = ALIGN(rect->height, 2); + } + + if (fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) { + /* IFP bypass mode, no scaling */ + mf->width = rect->width; + mf->height = rect->height; + } else { + /* No upscaling */ + if (mf->width > rect->width) + mf->width = rect->width; + if (mf->height > rect->height) + mf->height = rect->height; + } + + dev_dbg(&client->dev, "%s(): %ux%u, code=%x\n", __func__, + mf->width, mf->height, fmt->code); + + mf->code = fmt->code; + mf->colorspace = fmt->colorspace; + + return 0; +} + +static int mt9m111_s_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + const struct mt9m111_datafmt *fmt; + struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); + struct v4l2_rect *rect = &mt9m111->rect; + int ret; + + mt9m111_try_fmt(sd, mf); + fmt = mt9m111_find_datafmt(mt9m111, mf->code); + /* try_fmt() guarantees fmt != NULL && fmt->code == mf->code */ + + ret = mt9m111_setup_geometry(mt9m111, rect, mf->width, mf->height, mf->code); + if (!ret) + ret = mt9m111_set_pixfmt(mt9m111, mf->code); + if (!ret) { + mt9m111->width = mf->width; + mt9m111->height = mf->height; + mt9m111->fmt = fmt; + } + + return ret; +} + +#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->reg > 0x2ff) + return -EINVAL; + + 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, + const struct v4l2_dbg_register *reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + if (reg->reg > 0x2ff) + return -EINVAL; + + if (mt9m111_reg_write(client, reg->reg, reg->val) < 0) + return -EIO; + + return 0; +} +#endif + +static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask) +{ + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + int ret; + + if (flip) + ret = mt9m111_reg_set(client, mt9m111->ctx->read_mode, mask); + else + ret = mt9m111_reg_clear(client, mt9m111->ctx->read_mode, 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; + + 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 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + + if (val == V4L2_EXPOSURE_AUTO) + return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN); + return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN); +} + +static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on) +{ + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + + if (on) + return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN); + return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN); +} + +static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct mt9m111 *mt9m111 = container_of(ctrl->handler, + struct mt9m111, hdl); + + switch (ctrl->id) { + case V4L2_CID_VFLIP: + return mt9m111_set_flip(mt9m111, ctrl->val, + MT9M111_RMB_MIRROR_ROWS); + case V4L2_CID_HFLIP: + return mt9m111_set_flip(mt9m111, ctrl->val, + MT9M111_RMB_MIRROR_COLS); + case V4L2_CID_GAIN: + return mt9m111_set_global_gain(mt9m111, ctrl->val); + case V4L2_CID_EXPOSURE_AUTO: + return mt9m111_set_autoexposure(mt9m111, ctrl->val); + case V4L2_CID_AUTO_WHITE_BALANCE: + return mt9m111_set_autowhitebalance(mt9m111, ctrl->val); + } + + return -EINVAL; +} + +static int mt9m111_suspend(struct mt9m111 *mt9m111) +{ + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + int ret; + + v4l2_ctrl_s_ctrl(mt9m111->gain, mt9m111_get_global_gain(mt9m111)); + + ret = reg_set(RESET, MT9M111_RESET_RESET_MODE); + if (!ret) + ret = reg_set(RESET, MT9M111_RESET_RESET_SOC | + MT9M111_RESET_OUTPUT_DISABLE | + MT9M111_RESET_ANALOG_STANDBY); + if (!ret) + ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE); + + return ret; +} + +static void mt9m111_restore_state(struct mt9m111 *mt9m111) +{ + mt9m111_set_context(mt9m111, mt9m111->ctx); + mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code); + mt9m111_setup_geometry(mt9m111, &mt9m111->rect, + mt9m111->width, mt9m111->height, mt9m111->fmt->code); + v4l2_ctrl_handler_setup(&mt9m111->hdl); +} + +static int mt9m111_resume(struct mt9m111 *mt9m111) +{ + int 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; + + ret = mt9m111_enable(mt9m111); + if (!ret) + ret = mt9m111_reset(mt9m111); + if (!ret) + ret = mt9m111_set_context(mt9m111, mt9m111->ctx); + if (ret) + dev_err(&client->dev, "mt9m111 init failed: %d\n", ret); + return ret; +} + +static int mt9m111_power_on(struct mt9m111 *mt9m111) +{ + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + int ret; + + ret = soc_camera_power_on(&client->dev, ssdd, mt9m111->clk); + if (ret < 0) + return ret; + + ret = mt9m111_resume(mt9m111); + if (ret < 0) { + dev_err(&client->dev, "Failed to resume the sensor: %d\n", ret); + soc_camera_power_off(&client->dev, ssdd, mt9m111->clk); + } + + return ret; +} + +static void mt9m111_power_off(struct mt9m111 *mt9m111) +{ + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + + mt9m111_suspend(mt9m111); + soc_camera_power_off(&client->dev, ssdd, mt9m111->clk); +} + +static int mt9m111_s_power(struct v4l2_subdev *sd, int on) +{ + struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); + 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_power_on(mt9m111); + else + mt9m111_power_off(mt9m111); + } + + if (!ret) { + /* Update the power count. */ + mt9m111->power_count += on ? 1 : -1; + WARN_ON(mt9m111->power_count < 0); + } + + mutex_unlock(&mt9m111->power_lock); + return ret; +} + +static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = { + .s_ctrl = mt9m111_s_ctrl, +}; + +static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = { + .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 int mt9m111_g_mbus_config(struct v4l2_subdev *sd, + struct v4l2_mbus_config *cfg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + + cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING | + V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH | + V4L2_MBUS_DATA_ACTIVE_HIGH; + cfg->type = V4L2_MBUS_PARALLEL; + cfg->flags = soc_camera_apply_board_flags(ssdd, cfg); + + 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, + .g_mbus_config = mt9m111_g_mbus_config, +}; + +static struct v4l2_subdev_ops mt9m111_subdev_ops = { + .core = &mt9m111_subdev_core_ops, + .video = &mt9m111_subdev_video_ops, +}; + +/* + * 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 i2c_client *client) +{ + struct mt9m111 *mt9m111 = to_mt9m111(client); + s32 data; + int ret; + + ret = mt9m111_s_power(&mt9m111->subdev, 1); + if (ret < 0) + return ret; + + data = reg_read(CHIP_VERSION); + + switch (data) { + case 0x143a: /* MT9M111 or MT9M131 */ + dev_info(&client->dev, + "Detected a MT9M111/MT9M131 chip ID %x\n", data); + break; + case 0x148c: /* MT9M112 */ + dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data); + break; + default: + dev_err(&client->dev, + "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n", + data); + ret = -ENODEV; + goto done; + } + + ret = mt9m111_init(mt9m111); + if (ret) + goto done; + + ret = v4l2_ctrl_handler_setup(&mt9m111->hdl); + +done: + mt9m111_s_power(&mt9m111->subdev, 0); + return ret; +} + +static int mt9m111_probe(struct i2c_client *client, + const struct i2c_device_id *did) +{ + struct mt9m111 *mt9m111; + struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + int ret; + + if (!ssdd) { + 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 = devm_kzalloc(&client->dev, sizeof(struct mt9m111), GFP_KERNEL); + if (!mt9m111) + return -ENOMEM; + + mt9m111->clk = v4l2_clk_get(&client->dev, "mclk"); + if (IS_ERR(mt9m111->clk)) + return -EPROBE_DEFER; + + /* Default HIGHPOWER context */ + mt9m111->ctx = &context_b; + + v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops); + v4l2_ctrl_handler_init(&mt9m111->hdl, 5); + v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops, + V4L2_CID_VFLIP, 0, 1, 1, 0); + v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops, + V4L2_CID_HFLIP, 0, 1, 1, 0); + v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops, + V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1); + mt9m111->gain = v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops, + V4L2_CID_GAIN, 0, 63 * 2 * 2, 1, 32); + v4l2_ctrl_new_std_menu(&mt9m111->hdl, + &mt9m111_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0, + V4L2_EXPOSURE_AUTO); + mt9m111->subdev.ctrl_handler = &mt9m111->hdl; + if (mt9m111->hdl.error) { + ret = mt9m111->hdl.error; + goto out_clkput; + } + + /* Second stage probe - when a capture adapter is there */ + 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]; + mt9m111->lastpage = -1; + mutex_init(&mt9m111->power_lock); + + ret = soc_camera_power_init(&client->dev, ssdd); + if (ret < 0) + goto out_hdlfree; + + ret = mt9m111_video_probe(client); + if (ret < 0) + goto out_hdlfree; + + mt9m111->subdev.dev = &client->dev; + ret = v4l2_async_register_subdev(&mt9m111->subdev); + if (ret < 0) + goto out_hdlfree; + + return 0; + +out_hdlfree: + v4l2_ctrl_handler_free(&mt9m111->hdl); +out_clkput: + v4l2_clk_put(mt9m111->clk); + + return ret; +} + +static int mt9m111_remove(struct i2c_client *client) +{ + struct mt9m111 *mt9m111 = to_mt9m111(client); + + v4l2_async_unregister_subdev(&mt9m111->subdev); + v4l2_clk_put(mt9m111->clk); + v4l2_device_unregister_subdev(&mt9m111->subdev); + v4l2_ctrl_handler_free(&mt9m111->hdl); + + 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, +}; + +module_i2c_driver(mt9m111_i2c_driver); + +MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver"); +MODULE_AUTHOR("Robert Jarzmik"); +MODULE_LICENSE("GPL"); |