- 根目录:
- drivers
- media
- video
- mt9m111.c
/*
* 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 <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h>
#include <media/soc_camera.h>
/*
* MT9M111, MT9M112 and MT9M131:
* i2c address is 0x48 or 0x5d (depending on SADDR pin)
* The platform has to define i2c_board_info and call i2c_register_board_info()
*/
/*
* Sensor core register addresses (0x000..0x0ff)
*/
#define MT9M111_CHIP_VERSION 0x000
#define MT9M111_ROW_START 0x001
#define MT9M111_COLUMN_START 0x002
#define MT9M111_WINDOW_HEIGHT 0x003
#define MT9M111_WINDOW_WIDTH 0x004
#define MT9M111_HORIZONTAL_BLANKING_B 0x005
#define MT9M111_VERTICAL_BLANKING_B 0x006
#define MT9M111_HORIZONTAL_BLANKING_A 0x007
#define MT9M111_VERTICAL_BLANKING_A 0x008
#define MT9M111_SHUTTER_WIDTH 0x009
#define MT9M111_ROW_SPEED 0x00a
#define MT9M111_EXTRA_DELAY 0x00b
#define MT9M111_SHUTTER_DELAY 0x00c
#define MT9M111_RESET 0x00d
#define MT9M111_READ_MODE_B 0x020
#define MT9M111_READ_MODE_A 0x021
#define MT9M111_FLASH_CONTROL 0x023
#define MT9M111_GREEN1_GAIN 0x02b
#define MT9M111_BLUE_GAIN 0x02c
#define MT9M111_RED_GAIN 0x02d
#define MT9M111_GREEN2_GAIN 0x02e
#define MT9M111_GLOBAL_GAIN 0x02f
#define MT9M111_CONTEXT_CONTROL 0x0c8
#define MT9M111_PAGE_MAP 0x0f0
#define MT9M111_BYTE_WISE_ADDR 0x0f1
#define MT9M111_RESET_SYNC_CHANGES (1 << 15)
#define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
#define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
#define MT9M111_RESET_RESET_SOC (1 << 5)
#define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
#define MT9M111_RESET_CHIP_ENABLE (1 << 3)
#define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
#define MT9M111_RESET_RESTART_FRAME (1 << 1)
#define MT9M111_RESET_RESET_MODE (1 << 0)
#define MT9M111_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_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 (1 << 1)
#define MT9M111_OUTFMT_SWAP_RGB_EVEN (1 << 1)
#define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr (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 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_RGB565_2X8_LE, 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;
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 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 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);
return mt9m111_reg_write(client, reg, ret & ~data);
}
static int mt9m111_set_context(struct i2c_client *client,
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 i2c_client *client,
struct v4l2_rect *rect)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
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_setup_pixfmt(struct i2c_client *client, 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 i2c_client *client)
{
return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_PROCESSED_BAYER |
MT9M111_OUTFMT_RGB);
}
static int mt9m111_setfmt_bayer10(struct i2c_client *client)
{
return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_BYPASS_IFP);
}
static int mt9m111_setfmt_rgb565(struct i2c_client *client)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
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(client, val);
}
static int mt9m111_setfmt_rgb555(struct i2c_client *client)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
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(client, val);
}
static int mt9m111_setfmt_yuv(struct i2c_client *client)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
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(client, val);
}
static int mt9m111_enable(struct i2c_client *client)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
int ret;
ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
if (!ret)
mt9m111->powered = 1;
return ret;
}
static int mt9m111_reset(struct i2c_client *client)
{
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 i2c_client *client,
struct v4l2_rect *rect)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
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(client, 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 = to_mt9m111(client);
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(client, &rect);
if (!ret)
mt9m111->rect = rect;
return ret;
}
static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct mt9m111 *mt9m111 = to_mt9m111(client);
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 i2c_client *client = v4l2_get_subdevdata(sd);
struct mt9m111 *mt9m111 = to_mt9m111(client);
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 i2c_client *client,
enum v4l2_mbus_pixelcode code)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
int ret;
switch (code) {
case V4L2_MBUS_FMT_SBGGR8_1X8:
ret = mt9m111_setfmt_bayer8(client);
break;
case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
ret = mt9m111_setfmt_bayer10(client);
break;
case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE:
ret = mt9m111_setfmt_rgb555(client);
break;
case V4L2_MBUS_FMT_RGB565_2X8_LE:
ret = mt9m111_setfmt_rgb565(client);
break;
case V4L2_MBUS_FMT_UYVY8_2X8:
mt9m111->swap_yuv_y_chromas = 0;
mt9m111->swap_yuv_cb_cr = 0;
ret = mt9m111_setfmt_yuv(client);
break;
case V4L2_MBUS_FMT_VYUY8_2X8:
mt9m111->swap_yuv_y_chromas = 0;
mt9m111->swap_yuv_cb_cr = 1;
ret = mt9m111_setfmt_yuv(client);
break;
case V4L2_MBUS_FMT_YUYV8_2X8:
mt9m111->swap_yuv_y_chromas = 1;
mt9m111->swap_yuv_cb_cr = 0;
ret = mt9m111_setfmt_yuv(client);
break;
case V4L2_MBUS_FMT_YVYU8_2X8:
mt9m111->swap_yuv_y_chromas = 1;
mt9m111->swap_yuv_cb_cr = 1;
ret = mt9m111_setfmt_yuv(client);
break;
default:
dev_err(&client->dev, "Pixel format not handled : %x\n",
code);
ret = -EINVAL;
}
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 = to_mt9m111(client);
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(client, &rect);
if (!ret)
ret = mt9m111_set_pixfmt(client, 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 i2c_client *client = v4l2_get_subdevdata(sd);
struct mt9m111 *mt9m111 = to_mt9m111(client);
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 = to_mt9m111(client);
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 int mt9m111_resume(struct soc_camera_device *icd);
static int mt9m111_suspend(struct soc_camera_device *icd, pm_message_t state);
static struct soc_camera_ops mt9m111_ops = {
.suspend = mt9m111_suspend,
.resume = mt9m111_resume,
.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 i2c_client *client, int flip, int mask)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
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 i2c_client *client)
{
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 i2c_client *client, int gain)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
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 i2c_client *client, int on)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
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 i2c_client *client, int on)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
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 = to_mt9m111(client);
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(client);
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 i2c_client *client = v4l2_get_subdevdata(sd);
struct mt9m111 *mt9m111 = to_mt9m111(client);
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(client, ctrl->value,
MT9M111_RMB_MIRROR_ROWS);
break;
case V4L2_CID_HFLIP:
mt9m111->hflip = ctrl->value;
ret = mt9m111_set_flip(client, ctrl->value,
MT9M111_RMB_MIRROR_COLS);
break;
case V4L2_CID_GAIN:
ret = mt9m111_set_global_gain(client, ctrl->value);
break;
case V4L2_CID_EXPOSURE_AUTO:
ret = mt9m111_set_autoexposure(client, ctrl->value);
break;
case V4L2_CID_AUTO_WHITE_BALANCE:
ret = mt9m111_set_autowhitebalance(client, ctrl->value);
break;
default:
ret = -EINVAL;
}
return ret;
}
static int mt9m111_suspend(struct soc_camera_device *icd, pm_message_t state)
{
struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
struct mt9m111 *mt9m111 = to_mt9m111(client);
mt9m111->gain = mt9m111_get_global_gain(client);
return 0;
}
static int mt9m111_restore_state(struct i2c_client *client)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
mt9m111_set_context(client, mt9m111->context);
mt9m111_set_pixfmt(client, mt9m111->fmt->code);
mt9m111_setup_rect(client, &mt9m111->rect);
mt9m111_set_flip(client, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
mt9m111_set_flip(client, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
mt9m111_set_global_gain(client, mt9m111->gain);
mt9m111_set_autoexposure(client, mt9m111->autoexposure);
mt9m111_set_autowhitebalance(client, mt9m111->autowhitebalance);
return 0;
}
static int mt9m111_resume(struct soc_camera_device *icd)
{
struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
struct mt9m111 *mt9m111 = to_mt9m111(client);
int ret = 0;
if (mt9m111->powered) {
ret = mt9m111_enable(client);
if (!ret)
ret = mt9m111_reset(client);
if (!ret)
ret = mt9m111_restore_state(client);
}
return ret;
}
static int mt9m111_init(struct i2c_client *client)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
int ret;
mt9m111->context = HIGHPOWER;
ret = mt9m111_enable(client);
if (!ret)
ret = mt9m111_reset(client);
if (!ret)
ret = mt9m111_set_context(client, mt9m111->context);
if (!ret)
ret = mt9m111_set_autoexposure(client, 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.
* So this entire test is completely redundant.
*/
if (!icd->dev.parent ||
to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
return -ENODEV;
mt9m111->autoexposure = 1;
mt9m111->autowhitebalance = 1;
mt9m111->swap_rgb_even_odd = 1;
mt9m111->swap_rgb_red_blue = 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(client);
ei2c:
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,
#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");