/*
 * Samsung LSI S5C73M3 8M pixel camera driver
 *
 * Copyright (C) 2012, Samsung Electronics, Co., Ltd.
 * Sylwester Nawrocki <s.nawrocki@samsung.com>
 * Andrzej Hajda <a.hajda@samsung.com>
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */
#ifndef S5C73M3_H_
#define S5C73M3_H_

#include <linux/kernel.h>
#include <linux/regulator/consumer.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>
#include <media/s5c73m3.h>

#define DRIVER_NAME                     "S5C73M3"

#define S5C73M3_ISP_FMT                 V4L2_MBUS_FMT_VYUY8_2X8
#define S5C73M3_JPEG_FMT                V4L2_MBUS_FMT_S5C_UYVY_JPEG_1X8

/* Subdevs pad index definitions */
enum s5c73m3_pads {
        S5C73M3_ISP_PAD,
        S5C73M3_JPEG_PAD,
        S5C73M3_NUM_PADS
};

enum s5c73m3_oif_pads {
        OIF_ISP_PAD,
        OIF_JPEG_PAD,
        OIF_SOURCE_PAD,
        OIF_NUM_PADS
};

#define S5C73M3_SENSOR_FW_LEN           6
#define S5C73M3_SENSOR_TYPE_LEN         12

#define S5C73M3_REG(_addrh, _addrl) (((_addrh) << 16) | _addrl)

#define AHB_MSB_ADDR_PTR                        0xfcfc
#define REG_CMDWR_ADDRH                         0x0050
#define REG_CMDWR_ADDRL                         0x0054
#define REG_CMDRD_ADDRH                         0x0058
#define REG_CMDRD_ADDRL                         0x005c
#define REG_CMDBUF_ADDR                         0x0f14

#define REG_I2C_SEQ_STATUS                      S5C73M3_REG(0x0009, 0x59A6)
#define  SEQ_END_PLL                            (1<<0x0)
#define  SEQ_END_SENSOR                         (1<<0x1)
#define  SEQ_END_GPIO                           (1<<0x2)
#define  SEQ_END_FROM                           (1<<0x3)
#define  SEQ_END_STABLE_AE_AWB                  (1<<0x4)
#define  SEQ_END_READY_I2C_CMD                  (1<<0x5)

#define REG_I2C_STATUS                          S5C73M3_REG(0x0009, 0x599E)
#define  I2C_STATUS_CIS_I2C                     (1<<0x0)
#define  I2C_STATUS_AF_INIT                     (1<<0x1)
#define  I2C_STATUS_CAL_DATA                    (1<<0x2)
#define  I2C_STATUS_FRAME_COUNT                 (1<<0x3)
#define  I2C_STATUS_FROM_INIT                   (1<<0x4)
#define  I2C_STATUS_I2C_CIS_STREAM_OFF          (1<<0x5)
#define  I2C_STATUS_I2C_N_CMD_OVER              (1<<0x6)
#define  I2C_STATUS_I2C_N_CMD_MISMATCH          (1<<0x7)
#define  I2C_STATUS_CHECK_BIN_CRC               (1<<0x8)
#define  I2C_STATUS_EXCEPTION                   (1<<0x9)
#define  I2C_STATUS_INIF_INIT_STATE             (0x8)

#define REG_STATUS                              S5C73M3_REG(0x0009, 0x5080)
#define  REG_STATUS_BOOT_SUB_MAIN_ENTER         0xff01
#define  REG_STATUS_BOOT_SRAM_TIMING_OK         0xff02
#define  REG_STATUS_BOOT_INTERRUPTS_EN          0xff03
#define  REG_STATUS_BOOT_R_PLL_DONE             0xff04
#define  REG_STATUS_BOOT_R_PLL_LOCKTIME_DONE    0xff05
#define  REG_STATUS_BOOT_DELAY_COUNT_DONE       0xff06
#define  REG_STATUS_BOOT_I_PLL_DONE             0xff07
#define  REG_STATUS_BOOT_I_PLL_LOCKTIME_DONE    0xff08
#define  REG_STATUS_BOOT_PLL_INIT_OK            0xff09
#define  REG_STATUS_BOOT_SENSOR_INIT_OK         0xff0a
#define  REG_STATUS_BOOT_GPIO_SETTING_OK        0xff0b
#define  REG_STATUS_BOOT_READ_CAL_DATA_OK       0xff0c
#define  REG_STATUS_BOOT_STABLE_AE_AWB_OK       0xff0d
#define  REG_STATUS_ISP_COMMAND_COMPLETED       0xffff
#define  REG_STATUS_EXCEPTION_OCCURED           0xdead

#define COMM_RESULT_OFFSET                      S5C73M3_REG(0x0009, 0x5000)

#define COMM_IMG_OUTPUT                         0x0902
#define  COMM_IMG_OUTPUT_HDR                    0x0008
#define  COMM_IMG_OUTPUT_YUV                    0x0009
#define  COMM_IMG_OUTPUT_INTERLEAVED            0x000d

#define COMM_STILL_PRE_FLASH                    0x0a00
#define  COMM_STILL_PRE_FLASH_FIRE              0x0000
#define  COMM_STILL_PRE_FLASH_NON_FIRED         0x0000
#define  COMM_STILL_PRE_FLASH_FIRED             0x0001

#define COMM_STILL_MAIN_FLASH                   0x0a02
#define  COMM_STILL_MAIN_FLASH_CANCEL           0x0001
#define  COMM_STILL_MAIN_FLASH_FIRE             0x0002

#define COMM_ZOOM_STEP                          0x0b00

#define COMM_IMAGE_EFFECT                       0x0b0a
#define  COMM_IMAGE_EFFECT_NONE                 0x0001
#define  COMM_IMAGE_EFFECT_NEGATIVE             0x0002
#define  COMM_IMAGE_EFFECT_AQUA                 0x0003
#define  COMM_IMAGE_EFFECT_SEPIA                0x0004
#define  COMM_IMAGE_EFFECT_MONO                 0x0005

#define COMM_IMAGE_QUALITY                      0x0b0c
#define  COMM_IMAGE_QUALITY_SUPERFINE           0x0000
#define  COMM_IMAGE_QUALITY_FINE                0x0001
#define  COMM_IMAGE_QUALITY_NORMAL              0x0002

#define COMM_FLASH_MODE                         0x0b0e
#define  COMM_FLASH_MODE_OFF                    0x0000
#define  COMM_FLASH_MODE_ON                     0x0001
#define  COMM_FLASH_MODE_AUTO                   0x0002

#define COMM_FLASH_STATUS                       0x0b80
#define  COMM_FLASH_STATUS_OFF                  0x0001
#define  COMM_FLASH_STATUS_ON                   0x0002
#define  COMM_FLASH_STATUS_AUTO                 0x0003

#define COMM_FLASH_TORCH                        0x0b12
#define  COMM_FLASH_TORCH_OFF                   0x0000
#define  COMM_FLASH_TORCH_ON                    0x0001

#define COMM_AE_NEEDS_FLASH                     0x0cba
#define  COMM_AE_NEEDS_FLASH_OFF                0x0000
#define  COMM_AE_NEEDS_FLASH_ON                 0x0001

#define COMM_CHG_MODE                           0x0b10
#define  COMM_CHG_MODE_NEW                      0x8000
#define  COMM_CHG_MODE_SUBSAMPLING_HALF         0x2000
#define  COMM_CHG_MODE_SUBSAMPLING_QUARTER      0x4000

#define  COMM_CHG_MODE_YUV_320_240              0x0001
#define  COMM_CHG_MODE_YUV_640_480              0x0002
#define  COMM_CHG_MODE_YUV_880_720              0x0003
#define  COMM_CHG_MODE_YUV_960_720              0x0004
#define  COMM_CHG_MODE_YUV_1184_666             0x0005
#define  COMM_CHG_MODE_YUV_1280_720             0x0006
#define  COMM_CHG_MODE_YUV_1536_864             0x0007
#define  COMM_CHG_MODE_YUV_1600_1200            0x0008
#define  COMM_CHG_MODE_YUV_1632_1224            0x0009
#define  COMM_CHG_MODE_YUV_1920_1080            0x000a
#define  COMM_CHG_MODE_YUV_1920_1440            0x000b
#define  COMM_CHG_MODE_YUV_2304_1296            0x000c
#define  COMM_CHG_MODE_YUV_3264_2448            0x000d
#define  COMM_CHG_MODE_YUV_352_288              0x000e
#define  COMM_CHG_MODE_YUV_1008_672             0x000f

#define  COMM_CHG_MODE_JPEG_640_480             0x0010
#define  COMM_CHG_MODE_JPEG_800_450             0x0020
#define  COMM_CHG_MODE_JPEG_800_600             0x0030
#define  COMM_CHG_MODE_JPEG_1280_720            0x0040
#define  COMM_CHG_MODE_JPEG_1280_960            0x0050
#define  COMM_CHG_MODE_JPEG_1600_900            0x0060
#define  COMM_CHG_MODE_JPEG_1600_1200           0x0070
#define  COMM_CHG_MODE_JPEG_2048_1152           0x0080
#define  COMM_CHG_MODE_JPEG_2048_1536           0x0090
#define  COMM_CHG_MODE_JPEG_2560_1440           0x00a0
#define  COMM_CHG_MODE_JPEG_2560_1920           0x00b0
#define  COMM_CHG_MODE_JPEG_3264_2176           0x00c0
#define  COMM_CHG_MODE_JPEG_1024_768            0x00d0
#define  COMM_CHG_MODE_JPEG_3264_1836           0x00e0
#define  COMM_CHG_MODE_JPEG_3264_2448           0x00f0

#define COMM_AF_CON                             0x0e00
#define  COMM_AF_CON_STOP                       0x0000
#define  COMM_AF_CON_SCAN                       0x0001 /* Full Search */
#define  COMM_AF_CON_START                      0x0002 /* Fast Search */

#define COMM_AF_CAL                             0x0e06
#define COMM_AF_TOUCH_AF                        0x0e0a

#define REG_AF_STATUS                           S5C73M3_REG(0x0009, 0x5e80)
#define  REG_CAF_STATUS_FIND_SEARCH_DIR         0x0001
#define  REG_CAF_STATUS_FOCUSING                0x0002
#define  REG_CAF_STATUS_FOCUSED                 0x0003
#define  REG_CAF_STATUS_UNFOCUSED               0x0004
#define  REG_AF_STATUS_INVALID                  0x0010
#define  REG_AF_STATUS_FOCUSING                 0x0020
#define  REG_AF_STATUS_FOCUSED                  0x0030
#define  REG_AF_STATUS_UNFOCUSED                0x0040

#define REG_AF_TOUCH_POSITION                   S5C73M3_REG(0x0009, 0x5e8e)
#define COMM_AF_FACE_ZOOM                       0x0e10

#define COMM_AF_MODE                            0x0e02
#define  COMM_AF_MODE_NORMAL                    0x0000
#define  COMM_AF_MODE_MACRO                     0x0001
#define  COMM_AF_MODE_MOVIE_CAF_START           0x0002
#define  COMM_AF_MODE_MOVIE_CAF_STOP            0x0003
#define  COMM_AF_MODE_PREVIEW_CAF_START         0x0004
#define  COMM_AF_MODE_PREVIEW_CAF_STOP          0x0005

#define COMM_AF_SOFTLANDING                     0x0e16
#define  COMM_AF_SOFTLANDING_ON                 0x0000
#define  COMM_AF_SOFTLANDING_RES_COMPLETE       0x0001

#define COMM_FACE_DET                           0x0e0c
#define  COMM_FACE_DET_OFF                      0x0000
#define  COMM_FACE_DET_ON                       0x0001

#define COMM_FACE_DET_OSD                       0x0e0e
#define  COMM_FACE_DET_OSD_OFF                  0x0000
#define  COMM_FACE_DET_OSD_ON                   0x0001

#define COMM_AE_CON                             0x0c00
#define  COMM_AE_STOP                           0x0000 /* lock */
#define  COMM_AE_START                          0x0001 /* unlock */

#define COMM_ISO                                0x0c02
#define  COMM_ISO_AUTO                          0x0000
#define  COMM_ISO_100                           0x0001
#define  COMM_ISO_200                           0x0002
#define  COMM_ISO_400                           0x0003
#define  COMM_ISO_800                           0x0004
#define  COMM_ISO_SPORTS                        0x0005
#define  COMM_ISO_NIGHT                         0x0006
#define  COMM_ISO_INDOOR                        0x0007

/* 0x00000 (-2.0 EV)...0x0008 (2.0 EV), 0.5EV step */
#define COMM_EV                                 0x0c04

#define COMM_METERING                           0x0c06
#define  COMM_METERING_CENTER                   0x0000
#define  COMM_METERING_SPOT                     0x0001
#define  COMM_METERING_AVERAGE                  0x0002
#define  COMM_METERING_SMART                    0x0003

#define COMM_WDR                                0x0c08
#define  COMM_WDR_OFF                           0x0000
#define  COMM_WDR_ON                            0x0001

#define COMM_FLICKER_MODE                       0x0c12
#define  COMM_FLICKER_NONE                      0x0000
#define  COMM_FLICKER_MANUAL_50HZ               0x0001
#define  COMM_FLICKER_MANUAL_60HZ               0x0002
#define  COMM_FLICKER_AUTO                      0x0003
#define  COMM_FLICKER_AUTO_50HZ                 0x0004
#define  COMM_FLICKER_AUTO_60HZ                 0x0005

#define COMM_FRAME_RATE                         0x0c1e
#define  COMM_FRAME_RATE_AUTO_SET               0x0000
#define  COMM_FRAME_RATE_FIXED_30FPS            0x0002
#define  COMM_FRAME_RATE_FIXED_20FPS            0x0003
#define  COMM_FRAME_RATE_FIXED_15FPS            0x0004
#define  COMM_FRAME_RATE_FIXED_60FPS            0x0007
#define  COMM_FRAME_RATE_FIXED_120FPS           0x0008
#define  COMM_FRAME_RATE_FIXED_7FPS             0x0009
#define  COMM_FRAME_RATE_FIXED_10FPS            0x000a
#define  COMM_FRAME_RATE_FIXED_90FPS            0x000b
#define  COMM_FRAME_RATE_ANTI_SHAKE             0x0013

/* 0x0000...0x0004 -> sharpness: 0, 1, 2, -1, -2 */
#define COMM_SHARPNESS                          0x0c14

/* 0x0000...0x0004 -> saturation: 0, 1, 2, -1, -2 */
#define COMM_SATURATION                         0x0c16

/* 0x0000...0x0004 -> contrast: 0, 1, 2, -1, -2 */
#define COMM_CONTRAST                           0x0c18

#define COMM_SCENE_MODE                         0x0c1a
#define  COMM_SCENE_MODE_NONE                   0x0000
#define  COMM_SCENE_MODE_PORTRAIT               0x0001
#define  COMM_SCENE_MODE_LANDSCAPE              0x0002
#define  COMM_SCENE_MODE_SPORTS                 0x0003
#define  COMM_SCENE_MODE_INDOOR                 0x0004
#define  COMM_SCENE_MODE_BEACH                  0x0005
#define  COMM_SCENE_MODE_SUNSET                 0x0006
#define  COMM_SCENE_MODE_DAWN                   0x0007
#define  COMM_SCENE_MODE_FALL                   0x0008
#define  COMM_SCENE_MODE_NIGHT                  0x0009
#define  COMM_SCENE_MODE_AGAINST_LIGHT          0x000a
#define  COMM_SCENE_MODE_FIRE                   0x000b
#define  COMM_SCENE_MODE_TEXT                   0x000c
#define  COMM_SCENE_MODE_CANDLE                 0x000d

#define COMM_AE_AUTO_BRACKET                    0x0b14
#define  COMM_AE_AUTO_BRAKET_EV05               0x0080
#define  COMM_AE_AUTO_BRAKET_EV10               0x0100
#define  COMM_AE_AUTO_BRAKET_EV15               0x0180
#define  COMM_AE_AUTO_BRAKET_EV20               0x0200

#define COMM_SENSOR_STREAMING                   0x090a
#define  COMM_SENSOR_STREAMING_OFF              0x0000
#define  COMM_SENSOR_STREAMING_ON               0x0001

#define COMM_AWB_MODE                           0x0d02
#define  COMM_AWB_MODE_INCANDESCENT             0x0000
#define  COMM_AWB_MODE_FLUORESCENT1             0x0001
#define  COMM_AWB_MODE_FLUORESCENT2             0x0002
#define  COMM_AWB_MODE_DAYLIGHT                 0x0003
#define  COMM_AWB_MODE_CLOUDY                   0x0004
#define  COMM_AWB_MODE_AUTO                     0x0005

#define COMM_AWB_CON                            0x0d00
#define  COMM_AWB_STOP                          0x0000 /* lock */
#define  COMM_AWB_START                         0x0001 /* unlock */

#define COMM_FW_UPDATE                          0x0906
#define  COMM_FW_UPDATE_NOT_READY               0x0000
#define  COMM_FW_UPDATE_SUCCESS                 0x0005
#define  COMM_FW_UPDATE_FAIL                    0x0007
#define  COMM_FW_UPDATE_BUSY                    0xffff


#define S5C73M3_MAX_SUPPLIES                    6

struct s5c73m3_ctrls {
        struct v4l2_ctrl_handler handler;
        struct {
                /* exposure/exposure bias cluster */
                struct v4l2_ctrl *auto_exposure;
                struct v4l2_ctrl *exposure_bias;
                struct v4l2_ctrl *exposure_metering;
        };
        struct {
                /* iso/auto iso cluster */
                struct v4l2_ctrl *auto_iso;
                struct v4l2_ctrl *iso;
        };
        struct v4l2_ctrl *auto_wb;
        struct {
                /* continuous auto focus/auto focus cluster */
                struct v4l2_ctrl *focus_auto;
                struct v4l2_ctrl *af_start;
                struct v4l2_ctrl *af_stop;
                struct v4l2_ctrl *af_status;
                struct v4l2_ctrl *af_distance;
        };

        struct v4l2_ctrl *aaa_lock;
        struct v4l2_ctrl *colorfx;
        struct v4l2_ctrl *contrast;
        struct v4l2_ctrl *saturation;
        struct v4l2_ctrl *sharpness;
        struct v4l2_ctrl *zoom;
        struct v4l2_ctrl *wdr;
        struct v4l2_ctrl *stabilization;
        struct v4l2_ctrl *jpeg_quality;
        struct v4l2_ctrl *scene_mode;
};

enum s5c73m3_gpio_id {
        STBY,
        RST,
        GPIO_NUM,
};

enum s5c73m3_resolution_types {
        RES_ISP,
        RES_JPEG,
};

struct s5c73m3_interval {
        u16 fps_reg;
        struct v4l2_fract interval;
        /* Maximum rectangle for the interval */
        struct v4l2_frmsize_discrete size;
};

struct s5c73m3 {
        struct v4l2_subdev sensor_sd;
        struct media_pad sensor_pads[S5C73M3_NUM_PADS];

        struct v4l2_subdev oif_sd;
        struct media_pad oif_pads[OIF_NUM_PADS];

        struct spi_driver spidrv;
        struct spi_device *spi_dev;
        struct i2c_client *i2c_client;
        u32 i2c_write_address;
        u32 i2c_read_address;

        struct regulator_bulk_data supplies[S5C73M3_MAX_SUPPLIES];
        struct s5c73m3_gpio gpio[GPIO_NUM];

        /* External master clock frequency */
        u32 mclk_frequency;
        /* Video bus type - MIPI-CSI2/paralell */
        enum v4l2_mbus_type bus_type;

        const struct s5c73m3_frame_size *sensor_pix_size[2];
        const struct s5c73m3_frame_size *oif_pix_size[2];
        enum v4l2_mbus_pixelcode mbus_code;

        const struct s5c73m3_interval *fiv;

        struct v4l2_mbus_frame_desc frame_desc;
        /* protects the struct members below */
        struct mutex lock;

        struct s5c73m3_ctrls ctrls;

        u8 streaming:1;
        u8 apply_fmt:1;
        u8 apply_fiv:1;
        u8 isp_ready:1;

        short power;

        char sensor_fw[S5C73M3_SENSOR_FW_LEN + 2];
        char sensor_type[S5C73M3_SENSOR_TYPE_LEN + 2];
        char fw_file_version[2];
        unsigned int fw_size;
};

struct s5c73m3_frame_size {
        u32 width;
        u32 height;
        u8 reg_val;
};

extern int s5c73m3_dbg;

int s5c73m3_register_spi_driver(struct s5c73m3 *state);
void s5c73m3_unregister_spi_driver(struct s5c73m3 *state);
int s5c73m3_spi_write(struct s5c73m3 *state, const void *addr,
                      const unsigned int len, const unsigned int tx_size);
int s5c73m3_spi_read(struct s5c73m3 *state, void *addr,
                      const unsigned int len, const unsigned int tx_size);

int s5c73m3_read(struct s5c73m3 *state, u32 addr, u16 *data);
int s5c73m3_write(struct s5c73m3 *state, u32 addr, u16 data);
int s5c73m3_isp_command(struct s5c73m3 *state, u16 command, u16 data);
int s5c73m3_init_controls(struct s5c73m3 *state);

static inline struct v4l2_subdev *ctrl_to_sensor_sd(struct v4l2_ctrl *ctrl)
{
        return &container_of(ctrl->handler, struct s5c73m3,
                             ctrls.handler)->sensor_sd;
}

static inline struct s5c73m3 *sensor_sd_to_s5c73m3(struct v4l2_subdev *sd)
{
        return container_of(sd, struct s5c73m3, sensor_sd);
}

static inline struct s5c73m3 *oif_sd_to_s5c73m3(struct v4l2_subdev *sd)
{
        return container_of(sd, struct s5c73m3, oif_sd);
}
#endif  /* S5C73M3_H_ */