diff options
Diffstat (limited to 'drivers/media/video/mt9m111.c')
| -rw-r--r-- | drivers/media/video/mt9m111.c | 973 |
1 files changed, 973 insertions, 0 deletions
diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c new file mode 100644 index 0000000..da0b2d5 --- /dev/null +++ b/drivers/media/video/mt9m111.c @@ -0,0 +1,973 @@ +/* + * Driver for MT9M111 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 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_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(icd, MT9M111_##reg) +#define reg_write(reg, val) mt9m111_reg_write(icd, MT9M111_##reg, (val)) +#define reg_set(reg, val) mt9m111_reg_set(icd, MT9M111_##reg, (val)) +#define reg_clear(reg, val) mt9m111_reg_clear(icd, 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) + +static const struct soc_camera_data_format mt9m111_colour_formats[] = { + COL_FMT("YCrYCb 8 bit", 8, V4L2_PIX_FMT_YUYV, V4L2_COLORSPACE_JPEG), + 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_MT9M111* codes from v4l2-chip-ident.h */ + enum mt9m111_context context; + unsigned int left, top, width, height; + 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; +}; + +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 soc_camera_device *icd, const u16 reg) +{ + struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); + struct i2c_client *client = mt9m111->client; + int ret; + + ret = reg_page_map_set(client, reg); + if (!ret) + ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff))); + + dev_dbg(&icd->dev, "read reg.%03x -> %04x\n", reg, ret); + return ret; +} + +static int mt9m111_reg_write(struct soc_camera_device *icd, const u16 reg, + const u16 data) +{ + struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); + struct i2c_client *client = mt9m111->client; + int ret; + + ret = reg_page_map_set(client, reg); + if (!ret) + ret = i2c_smbus_write_word_data(mt9m111->client, (reg & 0xff), + swab16(data)); + dev_dbg(&icd->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret); + return ret; +} + +static int mt9m111_reg_set(struct soc_camera_device *icd, const u16 reg, + const u16 data) +{ + int ret; + + ret = mt9m111_reg_read(icd, reg); + if (ret >= 0) + ret = mt9m111_reg_write(icd, reg, ret | data); + return ret; +} + +static int mt9m111_reg_clear(struct soc_camera_device *icd, const u16 reg, + const u16 data) +{ + int ret; + + ret = mt9m111_reg_read(icd, reg); + return mt9m111_reg_write(icd, reg, ret & ~data); +} + +static int mt9m111_set_context(struct soc_camera_device *icd, + enum mt9m111_context ctxt) +{ + 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 mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); + int ret, is_raw_format; + int width = mt9m111->width; + int height = mt9m111->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, mt9m111->left); + if (!ret) + ret = reg_write(ROW_START, mt9m111->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) +{ + 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 mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); + struct soc_camera_link *icl = mt9m111->client->dev.platform_data; + int ret; + + if (icl->power) { + ret = icl->power(&mt9m111->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 mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); + struct soc_camera_link *icl = mt9m111->client->dev.platform_data; + int ret; + + ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE); + if (!ret) + mt9m111->powered = 0; + + if (icl->power) + icl->power(&mt9m111->client->dev, 0); + + return ret; +} + +static int mt9m111_reset(struct soc_camera_device *icd) +{ + 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_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) +{ + return SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING | + SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH | + SOCAM_DATAWIDTH_8; +} + +static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f) +{ + return 0; +} + +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_YUYV: + 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_cap(struct soc_camera_device *icd, + __u32 pixfmt, struct v4l2_rect *rect) +{ + struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); + int ret; + + mt9m111->left = rect->left; + mt9m111->top = rect->top; + mt9m111->width = rect->width; + mt9m111->height = rect->height; + + dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n", + __func__, pixfmt, mt9m111->left, mt9m111->top, mt9m111->width, + mt9m111->height); + + ret = mt9m111_setup_rect(icd); + if (!ret) + ret = mt9m111_set_pixfmt(icd, pixfmt); + return ret; +} + +static int mt9m111_try_fmt_cap(struct soc_camera_device *icd, + struct v4l2_format *f) +{ + if (f->fmt.pix.height > MT9M111_MAX_HEIGHT) + f->fmt.pix.height = MT9M111_MAX_HEIGHT; + if (f->fmt.pix.width > MT9M111_MAX_WIDTH) + f->fmt.pix.width = MT9M111_MAX_WIDTH; + + return 0; +} + +static int mt9m111_get_chip_id(struct soc_camera_device *icd, + struct v4l2_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_chip != 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_register *reg) +{ + int val; + + struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); + + if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff) + return -EINVAL; + if (reg->match_chip != mt9m111->client->addr) + return -ENODEV; + + val = mt9m111_reg_read(icd, reg->reg); + reg->val = (u64)val; + + if (reg->val > 0xffff) + return -EIO; + + return 0; +} + +static int mt9m111_set_register(struct soc_camera_device *icd, + struct v4l2_register *reg) +{ + struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd); + + if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff) + return -EINVAL; + + if (reg->match_chip != mt9m111->client->addr) + return -ENODEV; + + if (mt9m111_reg_write(icd, 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_fmt_cap = mt9m111_set_fmt_cap, + .try_fmt_cap = mt9m111_try_fmt_cap, + .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 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) +{ + unsigned int data, gain; + + data = reg_read(GLOBAL_GAIN); + if (data >= 0) + gain = ((data & (1 << 10)) * 2) + | ((data & (1 << 9)) * 2) + | (data & 0x2f); + else + gain = data; + + return gain; +} +static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain) +{ + 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 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_get_control(struct soc_camera_device *icd, + struct v4l2_control *ctrl) +{ + 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; + } + 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; + 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_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); + 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, "mt9m111 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, "mt9m111 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 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->model = V4L2_IDENT_MT9M111; + icd->formats = mt9m111_colour_formats; + icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats); + break; + default: + ret = -ENODEV; + dev_err(&icd->dev, + "No MT9M111 chip detected, register read %x\n", data); + goto ei2c; + } + + dev_info(&icd->dev, "Detected a MT9M111 chip ID 0x143a\n"); + + ret = soc_camera_video_start(icd); + if (ret) + goto eisis; + + mt9m111->autoexposure = 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, "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; + + 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 Camera driver"); +MODULE_AUTHOR("Robert Jarzmik"); +MODULE_LICENSE("GPL"); |
