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linux/drivers/media/video/mt9m111.c
Hans Verkuil aecde8b53b V4L/DVB (10141): v4l2: debugging API changed to match against driver name instead of ID. 
Since the i2c driver ID will be removed in the near future we have to
modify the v4l2 debugging API to use the driver name instead of driver ID.

Note that this API is not used in applications other than v4l2-dbg.cpp
as it is for debugging and testing only.

Should anyone use the old VIDIOC_G_CHIP_IDENT, then this will be logged
with a warning that it is deprecated and will be removed in 2.6.30.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-02 17:11:52 -02:00

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/*
* Driver for MT9M111/MT9M112 CMOS Image Sensor from Micron
*
* Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/videodev2.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/log2.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h>
#include <media/soc_camera.h>
/*
* mt9m111 and mt9m112 i2c address is 0x5d or 0x48 (depending on SAddr pin)
* The platform has to define i2c_board_info and call i2c_register_board_info()
*/
/* mt9m111: Sensor register addresses */
#define MT9M111_CHIP_VERSION 0x000
#define MT9M111_ROW_START 0x001
#define MT9M111_COLUMN_START 0x002
#define MT9M111_WINDOW_HEIGHT 0x003
#define MT9M111_WINDOW_WIDTH 0x004
#define MT9M111_HORIZONTAL_BLANKING_B 0x005
#define MT9M111_VERTICAL_BLANKING_B 0x006
#define MT9M111_HORIZONTAL_BLANKING_A 0x007
#define MT9M111_VERTICAL_BLANKING_A 0x008
#define MT9M111_SHUTTER_WIDTH 0x009
#define MT9M111_ROW_SPEED 0x00a
#define MT9M111_EXTRA_DELAY 0x00b
#define MT9M111_SHUTTER_DELAY 0x00c
#define MT9M111_RESET 0x00d
#define MT9M111_READ_MODE_B 0x020
#define MT9M111_READ_MODE_A 0x021
#define MT9M111_FLASH_CONTROL 0x023
#define MT9M111_GREEN1_GAIN 0x02b
#define MT9M111_BLUE_GAIN 0x02c
#define MT9M111_RED_GAIN 0x02d
#define MT9M111_GREEN2_GAIN 0x02e
#define MT9M111_GLOBAL_GAIN 0x02f
#define MT9M111_CONTEXT_CONTROL 0x0c8
#define MT9M111_PAGE_MAP 0x0f0
#define MT9M111_BYTE_WISE_ADDR 0x0f1
#define MT9M111_RESET_SYNC_CHANGES (1 << 15)
#define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
#define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
#define MT9M111_RESET_RESET_SOC (1 << 5)
#define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
#define MT9M111_RESET_CHIP_ENABLE (1 << 3)
#define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
#define MT9M111_RESET_RESTART_FRAME (1 << 1)
#define MT9M111_RESET_RESET_MODE (1 << 0)
#define MT9M111_RMB_MIRROR_COLS (1 << 1)
#define MT9M111_RMB_MIRROR_ROWS (1 << 0)
#define MT9M111_CTXT_CTRL_RESTART (1 << 15)
#define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
#define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
#define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
#define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
#define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
#define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
#define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
#define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
#define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
/*
* mt9m111: Colorpipe register addresses (0x100..0x1ff)
*/
#define MT9M111_OPER_MODE_CTRL 0x106
#define MT9M111_OUTPUT_FORMAT_CTRL 0x108
#define MT9M111_REDUCER_XZOOM_B 0x1a0
#define MT9M111_REDUCER_XSIZE_B 0x1a1
#define MT9M111_REDUCER_YZOOM_B 0x1a3
#define MT9M111_REDUCER_YSIZE_B 0x1a4
#define MT9M111_REDUCER_XZOOM_A 0x1a6
#define MT9M111_REDUCER_XSIZE_A 0x1a7
#define MT9M111_REDUCER_YZOOM_A 0x1a9
#define MT9M111_REDUCER_YSIZE_A 0x1aa
#define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
#define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
#define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
#define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
#define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
#define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
#define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
#define MT9M111_OUTFMT_RGB (1 << 8)
#define MT9M111_OUTFMT_RGB565 (0x0 << 6)
#define MT9M111_OUTFMT_RGB555 (0x1 << 6)
#define MT9M111_OUTFMT_RGB444x (0x2 << 6)
#define MT9M111_OUTFMT_RGBx444 (0x3 << 6)
#define MT9M111_OUTFMT_TST_RAMP_OFF (0x0 << 4)
#define MT9M111_OUTFMT_TST_RAMP_COL (0x1 << 4)
#define MT9M111_OUTFMT_TST_RAMP_ROW (0x2 << 4)
#define MT9M111_OUTFMT_TST_RAMP_FRAME (0x3 << 4)
#define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
#define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
#define MT9M111_OUTFMT_SWAP_YCbCr_C_Y (1 << 1)
#define MT9M111_OUTFMT_SWAP_RGB_EVEN (1 << 1)
#define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr (1 << 0)
/*
* mt9m111: Camera control register addresses (0x200..0x2ff not implemented)
*/
#define reg_read(reg) mt9m111_reg_read(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)
#define JPG_FMT(_name, _depth, _fourcc) \
COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_JPEG)
static const struct soc_camera_data_format mt9m111_colour_formats[] = {
JPG_FMT("CbYCrY 16 bit", 16, V4L2_PIX_FMT_UYVY),
JPG_FMT("CrYCbY 16 bit", 16, V4L2_PIX_FMT_VYUY),
JPG_FMT("YCbYCr 16 bit", 16, V4L2_PIX_FMT_YUYV),
JPG_FMT("YCrYCb 16 bit", 16, V4L2_PIX_FMT_YVYU),
RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
};
enum mt9m111_context {
HIGHPOWER = 0,
LOWPOWER,
};
struct mt9m111 {
struct i2c_client *client;
struct soc_camera_device icd;
int model; /* V4L2_IDENT_MT9M11x* codes from v4l2-chip-ident.h */
enum mt9m111_context context;
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;
unsigned int autowhitebalance:1;
};
static int reg_page_map_set(struct i2c_client *client, const u16 reg)
{
int ret;
u16 page;
static int lastpage = -1; /* PageMap cache value */
page = (reg >> 8);
if (page == lastpage)
return 0;
if (page > 2)
return -EINVAL;
ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
if (!ret)
lastpage = page;
return ret;
}
static int mt9m111_reg_read(struct 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)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
SOCAM_DATAWIDTH_8;
return soc_camera_apply_sensor_flags(icl, flags);
}
static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
{
return 0;
}
static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
int ret;
switch (pixfmt) {
case V4L2_PIX_FMT_SBGGR8:
ret = mt9m111_setfmt_bayer8(icd);
break;
case V4L2_PIX_FMT_SBGGR16:
ret = mt9m111_setfmt_bayer10(icd);
break;
case V4L2_PIX_FMT_RGB555:
ret = mt9m111_setfmt_rgb555(icd);
break;
case V4L2_PIX_FMT_RGB565:
ret = mt9m111_setfmt_rgb565(icd);
break;
case V4L2_PIX_FMT_UYVY:
mt9m111->swap_yuv_y_chromas = 0;
mt9m111->swap_yuv_cb_cr = 0;
ret = mt9m111_setfmt_yuv(icd);
break;
case V4L2_PIX_FMT_VYUY:
mt9m111->swap_yuv_y_chromas = 0;
mt9m111->swap_yuv_cb_cr = 1;
ret = mt9m111_setfmt_yuv(icd);
break;
case V4L2_PIX_FMT_YUYV:
mt9m111->swap_yuv_y_chromas = 1;
mt9m111->swap_yuv_cb_cr = 0;
ret = mt9m111_setfmt_yuv(icd);
break;
case V4L2_PIX_FMT_YVYU:
mt9m111->swap_yuv_y_chromas = 1;
mt9m111->swap_yuv_cb_cr = 1;
ret = mt9m111_setfmt_yuv(icd);
break;
default:
dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
ret = -EINVAL;
}
if (!ret)
mt9m111->pixfmt = pixfmt;
return ret;
}
static int mt9m111_set_fmt(struct soc_camera_device *icd,
__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(struct soc_camera_device *icd,
struct v4l2_format *f)
{
struct v4l2_pix_format *pix = &f->fmt.pix;
if (pix->height > MT9M111_MAX_HEIGHT)
pix->height = MT9M111_MAX_HEIGHT;
if (pix->width > MT9M111_MAX_WIDTH)
pix->width = MT9M111_MAX_WIDTH;
return 0;
}
static int mt9m111_get_chip_id(struct soc_camera_device *icd,
struct v4l2_dbg_chip_ident *id)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
return -EINVAL;
if (id->match.addr != mt9m111->client->addr)
return -ENODEV;
id->ident = mt9m111->model;
id->revision = 0;
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int mt9m111_get_register(struct soc_camera_device *icd,
struct v4l2_dbg_register *reg)
{
int val;
struct 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.addr != mt9m111->client->addr)
return -ENODEV;
val = mt9m111_reg_read(icd, reg->reg);
reg->size = 2;
reg->val = (u64)val;
if (reg->val > 0xffff)
return -EIO;
return 0;
}
static int mt9m111_set_register(struct soc_camera_device *icd,
struct v4l2_dbg_register *reg)
{
struct 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.addr != 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 = mt9m111_set_fmt,
.try_fmt = mt9m111_try_fmt,
.query_bus_param = mt9m111_query_bus_param,
.set_bus_param = mt9m111_set_bus_param,
.controls = mt9m111_controls,
.num_controls = ARRAY_SIZE(mt9m111_controls),
.get_control = mt9m111_get_control,
.set_control = mt9m111_set_control,
.get_chip_id = mt9m111_get_chip_id,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.get_register = mt9m111_get_register,
.set_register = mt9m111_set_register,
#endif
};
static int mt9m111_set_flip(struct soc_camera_device *icd, int flip, int mask)
{
struct 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)
{
int data;
data = reg_read(GLOBAL_GAIN);
if (data >= 0)
return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
(1 << ((data >> 9) & 1));
return data;
}
static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain)
{
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_set_autowhitebalance(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_AUTOWHITEBAL_EN);
else
ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
if (!ret)
mt9m111->autowhitebalance = on;
return ret;
}
static int mt9m111_get_control(struct soc_camera_device *icd,
struct v4l2_control *ctrl)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
int data;
switch (ctrl->id) {
case V4L2_CID_VFLIP:
if (mt9m111->context == HIGHPOWER)
data = reg_read(READ_MODE_B);
else
data = reg_read(READ_MODE_A);
if (data < 0)
return -EIO;
ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
break;
case V4L2_CID_HFLIP:
if (mt9m111->context == HIGHPOWER)
data = reg_read(READ_MODE_B);
else
data = reg_read(READ_MODE_A);
if (data < 0)
return -EIO;
ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
break;
case V4L2_CID_GAIN:
data = mt9m111_get_global_gain(icd);
if (data < 0)
return data;
ctrl->value = data;
break;
case V4L2_CID_EXPOSURE_AUTO:
ctrl->value = mt9m111->autoexposure;
break;
case V4L2_CID_AUTO_WHITE_BALANCE:
ctrl->value = mt9m111->autowhitebalance;
break;
}
return 0;
}
static int mt9m111_set_control(struct soc_camera_device *icd,
struct v4l2_control *ctrl)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
const struct v4l2_queryctrl *qctrl;
int ret;
qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
if (!qctrl)
return -EINVAL;
switch (ctrl->id) {
case V4L2_CID_VFLIP:
mt9m111->vflip = ctrl->value;
ret = mt9m111_set_flip(icd, ctrl->value,
MT9M111_RMB_MIRROR_ROWS);
break;
case V4L2_CID_HFLIP:
mt9m111->hflip = ctrl->value;
ret = mt9m111_set_flip(icd, ctrl->value,
MT9M111_RMB_MIRROR_COLS);
break;
case V4L2_CID_GAIN:
ret = mt9m111_set_global_gain(icd, ctrl->value);
break;
case V4L2_CID_EXPOSURE_AUTO:
ret = mt9m111_set_autoexposure(icd, ctrl->value);
break;
case V4L2_CID_AUTO_WHITE_BALANCE:
ret = mt9m111_set_autowhitebalance(icd, ctrl->value);
break;
default:
ret = -EINVAL;
}
return ret;
}
static int mt9m111_restore_state(struct soc_camera_device *icd)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
mt9m111_set_context(icd, mt9m111->context);
mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
mt9m111_setup_rect(icd);
mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
mt9m111_set_global_gain(icd, icd->gain);
mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
mt9m111_set_autowhitebalance(icd, mt9m111->autowhitebalance);
return 0;
}
static int mt9m111_resume(struct soc_camera_device *icd)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
int ret = 0;
if (mt9m111->powered) {
ret = mt9m111_enable(icd);
if (!ret)
ret = mt9m111_reset(icd);
if (!ret)
ret = mt9m111_restore_state(icd);
}
return ret;
}
static int mt9m111_init(struct soc_camera_device *icd)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
int ret;
mt9m111->context = HIGHPOWER;
ret = mt9m111_enable(icd);
if (!ret)
ret = mt9m111_reset(icd);
if (!ret)
ret = mt9m111_set_context(icd, mt9m111->context);
if (!ret)
ret = mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
if (ret)
dev_err(&icd->dev, "mt9m11x init failed: %d\n", ret);
return ret;
}
static int mt9m111_release(struct soc_camera_device *icd)
{
int ret;
ret = mt9m111_disable(icd);
if (ret < 0)
dev_err(&icd->dev, "mt9m11x release failed: %d\n", ret);
return ret;
}
/*
* Interface active, can use i2c. If it fails, it can indeed mean, that
* this wasn't our capture interface, so, we wait for the right one
*/
static int mt9m111_video_probe(struct soc_camera_device *icd)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
s32 data;
int ret;
/*
* We must have a parent by now. And it cannot be a wrong one.
* So this entire test is completely redundant.
*/
if (!icd->dev.parent ||
to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
return -ENODEV;
ret = mt9m111_enable(icd);
if (ret)
goto ei2c;
ret = mt9m111_reset(icd);
if (ret)
goto ei2c;
data = reg_read(CHIP_VERSION);
switch (data) {
case 0x143a: /* MT9M111 */
mt9m111->model = V4L2_IDENT_MT9M111;
break;
case 0x148c: /* MT9M112 */
mt9m111->model = V4L2_IDENT_MT9M112;
break;
default:
ret = -ENODEV;
dev_err(&icd->dev,
"No MT9M11x chip detected, register read %x\n", data);
goto ei2c;
}
icd->formats = mt9m111_colour_formats;
icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
dev_info(&icd->dev, "Detected a MT9M11x chip ID %x\n", data);
ret = soc_camera_video_start(icd);
if (ret)
goto eisis;
mt9m111->autoexposure = 1;
mt9m111->autowhitebalance = 1;
mt9m111->swap_rgb_even_odd = 1;
mt9m111->swap_rgb_red_blue = 1;
return 0;
eisis:
ei2c:
return ret;
}
static void mt9m111_video_remove(struct soc_camera_device *icd)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr,
mt9m111->icd.dev.parent, mt9m111->icd.vdev);
soc_camera_video_stop(&mt9m111->icd);
}
static int mt9m111_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct mt9m111 *mt9m111;
struct soc_camera_device *icd;
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
struct soc_camera_link *icl = client->dev.platform_data;
int ret;
if (!icl) {
dev_err(&client->dev, "MT9M11x driver needs platform data\n");
return -EINVAL;
}
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
dev_warn(&adapter->dev,
"I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
return -EIO;
}
mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
if (!mt9m111)
return -ENOMEM;
mt9m111->client = client;
i2c_set_clientdata(client, mt9m111);
/* Second stage probe - when a capture adapter is there */
icd = &mt9m111->icd;
icd->ops = &mt9m111_ops;
icd->control = &client->dev;
icd->x_min = MT9M111_MIN_DARK_COLS;
icd->y_min = MT9M111_MIN_DARK_ROWS;
icd->x_current = icd->x_min;
icd->y_current = icd->y_min;
icd->width_min = MT9M111_MIN_DARK_ROWS;
icd->width_max = MT9M111_MAX_WIDTH;
icd->height_min = MT9M111_MIN_DARK_COLS;
icd->height_max = MT9M111_MAX_HEIGHT;
icd->y_skip_top = 0;
icd->iface = icl->bus_id;
ret = soc_camera_device_register(icd);
if (ret)
goto eisdr;
return 0;
eisdr:
kfree(mt9m111);
return ret;
}
static int mt9m111_remove(struct i2c_client *client)
{
struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
soc_camera_device_unregister(&mt9m111->icd);
kfree(mt9m111);
return 0;
}
static const struct i2c_device_id mt9m111_id[] = {
{ "mt9m111", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, mt9m111_id);
static struct i2c_driver mt9m111_i2c_driver = {
.driver = {
.name = "mt9m111",
},
.probe = mt9m111_probe,
.remove = mt9m111_remove,
.id_table = mt9m111_id,
};
static int __init mt9m111_mod_init(void)
{
return i2c_add_driver(&mt9m111_i2c_driver);
}
static void __exit mt9m111_mod_exit(void)
{
i2c_del_driver(&mt9m111_i2c_driver);
}
module_init(mt9m111_mod_init);
module_exit(mt9m111_mod_exit);
MODULE_DESCRIPTION("Micron MT9M111/MT9M112 Camera driver");
MODULE_AUTHOR("Robert Jarzmik");
MODULE_LICENSE("GPL");
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