/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * drivers/media/i2c/smiapp/ccs.h
 *
 * Generic driver for MIPI CCS/SMIA/SMIA++ compliant camera sensors
 *
 * Copyright (C) 2020 Intel Corporation
 * Copyright (C) 2010--2012 Nokia Corporation
 * Contact: Sakari Ailus <sakari.ailus@linux.intel.com>
 */

#ifndef __CCS_H__
#define __CCS_H__

#include <linux/mutex.h>
#include <linux/regmap.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>

#include "ccs-data.h"
#include "ccs-limits.h"
#include "ccs-quirk.h"
#include "ccs-regs.h"
#include "ccs-reg-access.h"
#include "../ccs-pll.h"
#include "smiapp-reg-defs.h"

/*
 * Standard SMIA++ constants
 */
#define SMIA_VERSION_1                  10
#define SMIAPP_VERSION_0_8              8 /* Draft 0.8 */
#define SMIAPP_VERSION_0_9              9 /* Draft 0.9 */
#define SMIAPP_VERSION_1                10

#define SMIAPP_PROFILE_0                0
#define SMIAPP_PROFILE_1                1
#define SMIAPP_PROFILE_2                2

#define SMIAPP_NVM_PAGE_SIZE            64      /* bytes */

#define SMIAPP_RESET_DELAY_CLOCKS       2400
#define SMIAPP_RESET_DELAY(clk)                         \
        (1000 + (SMIAPP_RESET_DELAY_CLOCKS * 1000       \
                 + (clk) / 1000 - 1) / ((clk) / 1000))
#define CCS_RESET_DELAY_US              5000
#define CCS_RESET_TIMEOUT_US            1000000

#define CCS_COLOUR_COMPONENTS           4

#define CCS_DEFAULT_COMPRESSED_DT       MIPI_CSI2_DT_USER_DEFINED(0)

#define SMIAPP_NAME                     "smiapp"
#define CCS_NAME                        "ccs"

#define CCS_DFL_I2C_ADDR        (0x20 >> 1) /* Default I2C Address */
#define CCS_ALT_I2C_ADDR        (0x6e >> 1) /* Alternate I2C Address */

#define CCS_LIM(sensor, limit) \
        ccs_get_limit(sensor, CCS_L_##limit, 0)

#define CCS_LIM_AT(sensor, limit, offset)       \
        ccs_get_limit(sensor, CCS_L_##limit, CCS_L_##limit##_OFFSET(offset))

struct ccs_flash_strobe_parms {
        u8 mode;
        u32 strobe_width_high_us;
        u16 strobe_delay;
        u16 stobe_start_point;
        u8 trigger;
};

struct ccs_hwconfig {
        /*
         * Change the cci address if i2c_addr_alt is set.
         * Both default and alternate cci addr need to be present
         */
        unsigned short i2c_addr_dfl;    /* Default i2c addr */
        unsigned short i2c_addr_alt;    /* Alternate i2c addr */

        u32 ext_clk;                    /* sensor external clk */

        unsigned int lanes;             /* Number of CSI-2 lanes */
        u32 csi_signalling_mode;        /* CCS_CSI_SIGNALLING_MODE_* */
        u64 *op_sys_clock;

        struct ccs_flash_strobe_parms *strobe_setup;
};

struct ccs_quirk;

#define CCS_MODULE_IDENT_FLAG_REV_LE            (1 << 0)

struct ccs_module_ident {
        u16 mipi_manufacturer_id;
        u16 model_id;
        u8 smia_manufacturer_id;
        u8 revision_number_major;

        u8 flags;

        char *name;
        const struct ccs_quirk *quirk;
};

struct ccs_module_info {
        u32 smia_manufacturer_id;
        u32 mipi_manufacturer_id;
        u32 model_id;
        u32 revision_number;

        u32 module_year;
        u32 module_month;
        u32 module_day;

        u32 sensor_smia_manufacturer_id;
        u32 sensor_mipi_manufacturer_id;
        u32 sensor_model_id;
        u32 sensor_revision_number;
        u32 sensor_firmware_version;

        u32 smia_version;
        u32 smiapp_version;
        u32 ccs_version;

        char *name;
        const struct ccs_quirk *quirk;
};

#define CCS_IDENT_FQ(manufacturer, model, rev, fl, _name, _quirk)       \
        { .smia_manufacturer_id = manufacturer,                         \
          .model_id = model,                                            \
          .revision_number_major = rev,                                 \
          .flags = fl,                                                  \
          .name = _name,                                                \
          .quirk = _quirk, }

#define CCS_IDENT_LQ(manufacturer, model, rev, _name, _quirk)   \
        { .smia_manufacturer_id = manufacturer,                         \
          .model_id = model,                                            \
          .revision_number_major = rev,                                 \
          .flags = CCS_MODULE_IDENT_FLAG_REV_LE,                        \
          .name = _name,                                                \
          .quirk = _quirk, }

#define CCS_IDENT_L(manufacturer, model, rev, _name)                    \
        { .smia_manufacturer_id = manufacturer,                         \
          .model_id = model,                                            \
          .revision_number_major = rev,                                 \
          .flags = CCS_MODULE_IDENT_FLAG_REV_LE,                        \
          .name = _name, }

#define CCS_IDENT_Q(manufacturer, model, rev, _name, _quirk)            \
        { .smia_manufacturer_id = manufacturer,                         \
          .model_id = model,                                            \
          .revision_number_major = rev,                                 \
          .flags = 0,                                                   \
          .name = _name,                                                \
          .quirk = _quirk, }

#define CCS_IDENT(manufacturer, model, rev, _name)                      \
        { .smia_manufacturer_id = manufacturer,                         \
          .model_id = model,                                            \
          .revision_number_major = rev,                                 \
          .flags = 0,                                                   \
          .name = _name, }

struct ccs_csi_data_format {
        u32 code;
        u8 width;
        u8 compressed;
        u8 pixel_order;
};

#define CCS_SUBDEVS                     3

#define CCS_PA_PAD_SRC                  0
#define CCS_PAD_SINK                    0
#define CCS_PAD_SRC                     1
#define CCS_PADS                        2

#define CCS_STREAM_PIXEL                0

struct ccs_binning_subtype {
        u8 horizontal:4;
        u8 vertical:4;
} __packed;

struct ccs_subdev {
        struct v4l2_subdev sd;
        struct media_pad pads[CCS_PADS];
        unsigned short sink_pad;
        unsigned short source_pad;
        int npads;
        struct ccs_sensor *sensor;
        struct v4l2_ctrl_handler ctrl_handler;
};

/*
 * struct ccs_sensor - Main device structure
 */
struct ccs_sensor {
        /*
         * "mutex" is used to serialise access to all fields here
         * except v4l2_ctrls at the end of the struct. "mutex" is also
         * used to serialise access to file handle specific
         * information.
         */
        struct mutex mutex;
        struct ccs_subdev ssds[CCS_SUBDEVS];
        u32 ssds_used;
        struct ccs_subdev *src;
        struct ccs_subdev *binner;
        struct ccs_subdev *scaler;
        struct ccs_subdev *pixel_array;
        struct ccs_hwconfig hwcfg;
        struct regulator_bulk_data *regulators;
        struct clk *ext_clk;
        struct gpio_desc *xshutdown;
        struct gpio_desc *reset;
        struct regmap *regmap;
        void *ccs_limits;
        u8 nbinning_subtypes;
        struct ccs_binning_subtype binning_subtypes[CCS_LIM_BINNING_SUB_TYPE_MAX_N + 1];
        u64 mbus_frame_fmts;
        const struct ccs_csi_data_format *csi_format;
        const struct ccs_csi_data_format *internal_csi_format;
        u64 default_mbus_frame_fmts;
        int default_pixel_order;
        struct ccs_data_container sdata, mdata;

        u8 frame_skip;
        u16 embedded_start; /* embedded data start line */
        u16 embedded_end;
        u16 image_start; /* image data start line */
        u16 visible_pixel_start; /* start pixel of the visible image */

        u8 streaming;
        bool dev_init_done;
        bool handler_setup_needed;
        u8 compressed_min_bpp;

        struct ccs_module_info minfo;

        struct ccs_pll pll;

        /* Is a default format supported for a given BPP? */
        unsigned long *valid_link_freqs;

        /* Pixel array controls */
        struct v4l2_ctrl *exposure;
        struct v4l2_ctrl *hflip;
        struct v4l2_ctrl *vflip;
        struct v4l2_ctrl *vblank;
        struct v4l2_ctrl *hblank;
        struct v4l2_ctrl *pixel_rate_parray;
        struct v4l2_ctrl *luminance_level;
        /* src controls */
        struct v4l2_ctrl *link_freq;
        struct v4l2_ctrl *pixel_rate_csi;
        /* test pattern colour components */
        struct v4l2_ctrl *test_data[CCS_COLOUR_COMPONENTS];
};

#define to_ccs_subdev(_sd)                              \
        container_of(_sd, struct ccs_subdev, sd)

#define to_ccs_sensor(_sd)      \
        (to_ccs_subdev(_sd)->sensor)

void ccs_replace_limit(struct ccs_sensor *sensor,
                       unsigned int limit, unsigned int offset, u32 val);
u32 ccs_get_limit(struct ccs_sensor *sensor, unsigned int limit,
                  unsigned int offset);

#endif /* __CCS_H__ */