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OpenCloudOS-Kernel/drivers/media/video/mt9m111.c

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/*
* 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");
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