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* Header for M-5MOLS 8M Pixel camera sensor with ISP
* Copyright (C) 2011 Samsung Electronics Co., Ltd.
* Author: HeungJun Kim <>
* Copyright (C) 2009 Samsung Electronics Co., Ltd.
* Author: Dongsoo Nathaniel Kim <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
#ifndef M5MOLS_H
#define M5MOLS_H
#include <linux/sizes.h>
#include <media/v4l2-subdev.h>
#include "m5mols_reg.h"
/* An amount of data transmitted in addition to the value
* determined by CAPP_JPEG_SIZE_MAX register.
#define M5MOLS_JPEG_TAGS_SIZE 0x20000
extern int m5mols_debug;
enum m5mols_restype {
* struct m5mols_resolution - structure for the resolution
* @type: resolution type according to the pixel code
* @width: width of the resolution
* @height: height of the resolution
* @reg: resolution preset register value
struct m5mols_resolution {
u8 reg;
enum m5mols_restype type;
u16 width;
u16 height;
* struct m5mols_exif - structure for the EXIF information of M-5MOLS
* @exposure_time: exposure time register value
* @shutter_speed: speed of the shutter register value
* @aperture: aperture register value
* @exposure_bias: it calls also EV bias
* @iso_speed: ISO register value
* @flash: status register value of the flash
* @sdr: status register value of the Subject Distance Range
* @qval: not written exact meaning in document
struct m5mols_exif {
u32 exposure_time;
u32 shutter_speed;
u32 aperture;
u32 brightness;
u32 exposure_bias;
u16 iso_speed;
u16 flash;
u16 sdr;
u16 qval;
* struct m5mols_capture - Structure for the capture capability
* @exif: EXIF information
* @buf_size: internal JPEG frame buffer size, in bytes
* @main: size in bytes of the main image
* @thumb: size in bytes of the thumb image, if it was accompanied
* @total: total size in bytes of the produced image
struct m5mols_capture {
struct m5mols_exif exif;
unsigned int buf_size;
u32 main;
u32 thumb;
u32 total;
* struct m5mols_scenemode - structure for the scenemode capability
* @metering: metering light register value
* @ev_bias: EV bias register value
* @wb_mode: mode which means the WhiteBalance is Auto or Manual
* @wb_preset: whitebalance preset register value in the Manual mode
* @chroma_en: register value whether the Chroma capability is enabled or not
* @chroma_lvl: chroma's level register value
* @edge_en: register value Whether the Edge capability is enabled or not
* @edge_lvl: edge's level register value
* @af_range: Auto Focus's range
* @fd_mode: Face Detection mode
* @mcc: Multi-axis Color Conversion which means emotion color
* @light: status of the Light
* @flash: status of the Flash
* @tone: Tone color which means Contrast
* @iso: ISO register value
* @capt_mode: Mode of the Image Stabilization while the camera capturing
* @wdr: Wide Dynamic Range register value
* The each value according to each scenemode is recommended in the documents.
struct m5mols_scenemode {
u8 metering;
u8 ev_bias;
u8 wb_mode;
u8 wb_preset;
u8 chroma_en;
u8 chroma_lvl;
u8 edge_en;
u8 edge_lvl;
u8 af_range;
u8 fd_mode;
u8 mcc;
u8 light;
u8 flash;
u8 tone;
u8 iso;
u8 capt_mode;
u8 wdr;
* struct m5mols_version - firmware version information
* @customer: customer information
* @project: version of project information according to customer
* @fw: firmware revision
* @hw: hardware revision
* @param: version of the parameter
* @awb: Auto WhiteBalance algorithm version
* @str: information about manufacturer and packaging vendor
* @af: Auto Focus version
* The register offset starts the customer version at 0x0, and it ends
* the awb version at 0x09. The customer, project information occupies 1 bytes
* each. And also the fw, hw, param, awb each requires 2 bytes. The str is
* unique string associated with firmware's version. It includes information
* about manufacturer and the vendor of the sensor's packaging. The least
* significant 2 bytes of the string indicate packaging manufacturer.
struct m5mols_version {
u8 customer;
u8 project;
u16 fw;
u16 hw;
u16 param;
u16 awb;
u8 af;
* struct m5mols_info - M-5MOLS driver data structure
* @pdata: platform data
* @sd: v4l-subdev instance
* @pad: media pad
* @irq_waitq: waitqueue for the capture
* @irq_done: set to 1 in the interrupt handler
* @handle: control handler
* @auto_exposure: auto/manual exposure control
* @exposure_bias: exposure compensation control
* @exposure: manual exposure control
* @metering: exposure metering control
* @auto_iso: auto/manual ISO sensitivity control
* @iso: manual ISO sensitivity control
* @auto_wb: auto white balance control
* @lock_3a: 3A lock control
* @colorfx: color effect control
* @saturation: saturation control
* @zoom: zoom control
* @wdr: wide dynamic range control
* @stabilization: image stabilization control
* @jpeg_quality: JPEG compression quality control
* @set_power: optional power callback to the board code
* @lock: mutex protecting the structure fields below
* @ffmt: current fmt according to resolution type
* @res_type: current resolution type
* @ver: information of the version
* @cap: the capture mode attributes
* @isp_ready: 1 when the ISP controller has completed booting
* @power: current sensor's power status
* @ctrl_sync: 1 when the control handler state is restored in H/W
* @resolution: register value for current resolution
* @mode: register value for current operation mode
struct m5mols_info {
const struct m5mols_platform_data *pdata;
struct v4l2_subdev sd;
struct media_pad pad;
wait_queue_head_t irq_waitq;
atomic_t irq_done;
struct v4l2_ctrl_handler handle;
struct {
/* exposure/exposure bias/auto exposure cluster */
struct v4l2_ctrl *auto_exposure;
struct v4l2_ctrl *exposure_bias;
struct v4l2_ctrl *exposure;
struct v4l2_ctrl *metering;
struct {
/* iso/auto iso cluster */
struct v4l2_ctrl *auto_iso;
struct v4l2_ctrl *iso;
struct v4l2_ctrl *auto_wb;
struct v4l2_ctrl *lock_3a;
struct v4l2_ctrl *colorfx;
struct v4l2_ctrl *saturation;
struct v4l2_ctrl *zoom;
struct v4l2_ctrl *wdr;
struct v4l2_ctrl *stabilization;
struct v4l2_ctrl *jpeg_quality;
int (*set_power)(struct device *dev, int on);
struct mutex lock;
struct v4l2_mbus_framefmt ffmt[M5MOLS_RESTYPE_MAX];
int res_type;
struct m5mols_version ver;
struct m5mols_capture cap;
unsigned int isp_ready:1;
unsigned int power:1;
unsigned int ctrl_sync:1;
u8 resolution;
u8 mode;
#define is_available_af(__info) (__info->
#define is_code(__code, __type) (__code == m5mols_default_ffmt[__type].code)
#define is_manufacturer(__info, __manufacturer) \
(__info->ver.str[0] == __manufacturer[0] && \
__info->ver.str[1] == __manufacturer[1])
* I2C operation of the M-5MOLS
* The I2C read operation of the M-5MOLS requires 2 messages. The first
* message sends the information about the command, command category, and total
* message size. The second message is used to retrieve the data specifed in
* the first message
* 1st message 2nd message
* +-------+---+----------+-----+-------+ +------+------+------+------+
* | size1 | R | category | cmd | size2 | | d[0] | d[1] | d[2] | d[3] |
* +-------+---+----------+-----+-------+ +------+------+------+------+
* - size1: message data size(5 in this case)
* - size2: desired buffer size of the 2nd message
* - d[0..3]: according to size2
* The I2C write operation needs just one message. The message includes
* category, command, total size, and desired data.
* 1st message
* +-------+---+----------+-----+------+------+------+------+
* | size1 | W | category | cmd | d[0] | d[1] | d[2] | d[3] |
* +-------+---+----------+-----+------+------+------+------+
* - d[0..3]: according to size1
int m5mols_read_u8(struct v4l2_subdev *sd, u32 reg_comb, u8 *val);
int m5mols_read_u16(struct v4l2_subdev *sd, u32 reg_comb, u16 *val);
int m5mols_read_u32(struct v4l2_subdev *sd, u32 reg_comb, u32 *val);
int m5mols_write(struct v4l2_subdev *sd, u32 reg_comb, u32 val);
int m5mols_busy_wait(struct v4l2_subdev *sd, u32 reg, u32 value, u32 mask,
int timeout);
/* Mask value for busy waiting until M-5MOLS I2C interface is initialized */
#define M5MOLS_I2C_RDY_WAIT_FL (1 << 16)
/* ISP state transition timeout, in ms */
* Mode operation of the M-5MOLS
* Changing the mode of the M-5MOLS is needed right executing order.
* There are three modes(PARAMETER, MONITOR, CAPTURE) which can be changed
* by user. There are various categories associated with each mode.
* +============================================================+
* | mode | category |
* +============================================================+
* | FLASH | FLASH(only after Stand-by or Power-on) |
* | SYSTEM | SYSTEM(only after sensor arm-booting) |
* | MONITOR | MONITOR(preview), Auto Focus, Face Detection |
* | CAPTURE | Single CAPTURE, Preview(recording) |
* +============================================================+
* The available executing order between each modes are as follows:
int m5mols_set_mode(struct m5mols_info *info, u8 mode);
int m5mols_enable_interrupt(struct v4l2_subdev *sd, u8 reg);
int m5mols_wait_interrupt(struct v4l2_subdev *sd, u8 condition, u32 timeout);
int m5mols_restore_controls(struct m5mols_info *info);
int m5mols_start_capture(struct m5mols_info *info);
int m5mols_do_scenemode(struct m5mols_info *info, u8 mode);
int m5mols_lock_3a(struct m5mols_info *info, bool lock);
int m5mols_set_ctrl(struct v4l2_ctrl *ctrl);
int m5mols_init_controls(struct v4l2_subdev *sd);
/* The firmware function */
int m5mols_update_fw(struct v4l2_subdev *sd,
int (*set_power)(struct m5mols_info *, bool));
static inline struct m5mols_info *to_m5mols(struct v4l2_subdev *subdev)
return container_of(subdev, struct m5mols_info, sd);
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
struct m5mols_info *info = container_of(ctrl->handler,
struct m5mols_info, handle);
return &info->sd;
static inline void m5mols_set_ctrl_mode(struct v4l2_ctrl *ctrl,
unsigned int mode)
ctrl->priv = (void *)(uintptr_t)mode;
static inline unsigned int m5mols_get_ctrl_mode(struct v4l2_ctrl *ctrl)
return (unsigned int)(uintptr_t)ctrl->priv;
#endif /* M5MOLS_H */