/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Support for Medifield PNW Camera Imaging ISP subsystem.
 *
 * Copyright (c) 2010 Intel Corporation. All Rights Reserved.
 *
 * 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 __ATOMISP_SUBDEV_H__
#define __ATOMISP_SUBDEV_H__

#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-subdev.h>
#include <media/videobuf-core.h>

#include "atomisp_common.h"
#include "atomisp_compat.h"
#include "atomisp_v4l2.h"

#include "ia_css.h"

/* EXP_ID's ranger is 1 ~ 250 */
#define ATOMISP_MAX_EXP_ID     (250)
enum atomisp_subdev_input_entity {
        ATOMISP_SUBDEV_INPUT_NONE,
        ATOMISP_SUBDEV_INPUT_MEMORY,
        ATOMISP_SUBDEV_INPUT_CSI2,
        /*
         * The following enum for CSI2 port must go together in one row.
         * Otherwise it breaks the code logic.
         */
        ATOMISP_SUBDEV_INPUT_CSI2_PORT1,
        ATOMISP_SUBDEV_INPUT_CSI2_PORT2,
        ATOMISP_SUBDEV_INPUT_CSI2_PORT3,
};

#define ATOMISP_SUBDEV_PAD_SINK                 0
/* capture output for still frames */
#define ATOMISP_SUBDEV_PAD_SOURCE_CAPTURE       1
/* viewfinder output for downscaled capture output */
#define ATOMISP_SUBDEV_PAD_SOURCE_VF            2
/* preview output for display */
#define ATOMISP_SUBDEV_PAD_SOURCE_PREVIEW       3
/* main output for video pipeline */
#define ATOMISP_SUBDEV_PAD_SOURCE_VIDEO 4
#define ATOMISP_SUBDEV_PADS_NUM                 5

struct atomisp_in_fmt_conv {
        u32     code;
        u8 bpp; /* bits per pixel */
        u8 depth; /* uncompressed */
        enum atomisp_input_format atomisp_in_fmt;
        enum ia_css_bayer_order bayer_order;
};

struct atomisp_sub_device;

struct atomisp_video_pipe {
        struct video_device vdev;
        enum v4l2_buf_type type;
        struct media_pad pad;
        struct videobuf_queue capq;
        struct videobuf_queue outq;
        struct list_head activeq;
        struct list_head activeq_out;
        /*
         * the buffers waiting for per-frame parameters, this is only valid
         * in per-frame setting mode.
         */
        struct list_head buffers_waiting_for_param;
        /* the link list to store per_frame parameters */
        struct list_head per_frame_params;

        unsigned int buffers_in_css;

        /* irq_lock is used to protect video buffer state change operations and
         * also to make activeq, activeq_out, capq and outq list
         * operations atomic. */
        spinlock_t irq_lock;
        unsigned int users;

        struct atomisp_device *isp;
        struct v4l2_pix_format pix;
        u32 sh_fmt;

        struct atomisp_sub_device *asd;

        /*
         * This frame_config_id is got from CSS when dequueues buffers from CSS,
         * it is used to indicate which parameter it has applied.
         */
        unsigned int frame_config_id[VIDEO_MAX_FRAME];
        /*
         * This config id is set when camera HAL enqueues buffer, it has a
         * non-zero value to indicate which parameter it needs to applu
         */
        unsigned int frame_request_config_id[VIDEO_MAX_FRAME];
        struct atomisp_css_params_with_list *frame_params[VIDEO_MAX_FRAME];

        /*
        * move wdt from asd struct to create wdt for each pipe
        */
        /* ISP2401 */
        struct timer_list wdt;
        unsigned int wdt_duration;      /* in jiffies */
        unsigned long wdt_expires;
        atomic_t wdt_count;
};

struct atomisp_acc_pipe {
        struct video_device vdev;
        unsigned int users;
        bool running;
        struct atomisp_sub_device *asd;
        struct atomisp_device *isp;
};

struct atomisp_pad_format {
        struct v4l2_mbus_framefmt fmt;
        struct v4l2_rect crop;
        struct v4l2_rect compose;
};

/* Internal states for flash process */
enum atomisp_flash_state {
        ATOMISP_FLASH_IDLE,
        ATOMISP_FLASH_REQUESTED,
        ATOMISP_FLASH_ONGOING,
        ATOMISP_FLASH_DONE
};

/*
 * This structure is used to cache the CSS parameters, it aligns to
 * struct ia_css_isp_config but without un-supported and deprecated parts.
 */
struct atomisp_css_params {
        struct ia_css_wb_config   wb_config;
        struct ia_css_cc_config   cc_config;
        struct ia_css_tnr_config  tnr_config;
        struct ia_css_ecd_config  ecd_config;
        struct ia_css_ynr_config  ynr_config;
        struct ia_css_fc_config   fc_config;
        struct ia_css_formats_config formats_config;
        struct ia_css_cnr_config  cnr_config;
        struct ia_css_macc_config macc_config;
        struct ia_css_ctc_config  ctc_config;
        struct ia_css_aa_config   aa_config;
        struct ia_css_aa_config   baa_config;
        struct ia_css_ce_config   ce_config;
        struct ia_css_ob_config   ob_config;
        struct ia_css_dp_config   dp_config;
        struct ia_css_de_config   de_config;
        struct ia_css_gc_config   gc_config;
        struct ia_css_nr_config   nr_config;
        struct ia_css_ee_config   ee_config;
        struct ia_css_anr_config  anr_config;
        struct ia_css_3a_config   s3a_config;
        struct ia_css_xnr_config  xnr_config;
        struct ia_css_dz_config   dz_config;
        struct ia_css_cc_config yuv2rgb_cc_config;
        struct ia_css_cc_config rgb2yuv_cc_config;
        struct ia_css_macc_table  macc_table;
        struct ia_css_gamma_table gamma_table;
        struct ia_css_ctc_table   ctc_table;

        struct ia_css_xnr_table   xnr_table;
        struct ia_css_rgb_gamma_table r_gamma_table;
        struct ia_css_rgb_gamma_table g_gamma_table;
        struct ia_css_rgb_gamma_table b_gamma_table;

        struct ia_css_vector      motion_vector;
        struct ia_css_anr_thres   anr_thres;

        struct ia_css_dvs_6axis_config *dvs_6axis;
        struct ia_css_dvs2_coefficients *dvs2_coeff;
        struct ia_css_shading_table *shading_table;
        struct ia_css_morph_table   *morph_table;

        /*
         * Used to store the user pointer address of the frame. driver needs to
         * translate to ia_css_frame * and then set to CSS.
         */
        void            *output_frame;
        u32     isp_config_id;

        /* Indicates which parameters need to be updated. */
        struct atomisp_parameters update_flag;
};

struct atomisp_subdev_params {
        /* FIXME: Determines whether raw capture buffer are being passed to
         * user space. Unimplemented for now. */
        int online_process;
        int yuv_ds_en;
        unsigned int color_effect;
        bool gdc_cac_en;
        bool macc_en;
        bool bad_pixel_en;
        bool video_dis_en;
        bool sc_en;
        bool fpn_en;
        bool xnr_en;
        bool low_light;
        int false_color;
        unsigned int histogram_elenum;

        /* Current grid info */
        struct ia_css_grid_info curr_grid_info;
        enum ia_css_pipe_id s3a_enabled_pipe;

        int s3a_output_bytes;

        bool dis_proj_data_valid;

        struct ia_css_dz_config   dz_config;  /** Digital Zoom */
        struct ia_css_capture_config   capture_config;

        struct ia_css_isp_config config;

        /* current configurations */
        struct atomisp_css_params css_param;

        /*
         * Intermediate buffers used to communicate data between
         * CSS and user space.
         */
        struct ia_css_3a_statistics *s3a_user_stat;

        void *metadata_user[ATOMISP_METADATA_TYPE_NUM];
        u32 metadata_width_size;

        struct ia_css_dvs2_statistics *dvs_stat;
        struct ia_css_dvs_6axis_config *dvs_6axis;
        u32 exp_id;
        int  dvs_hor_coef_bytes;
        int  dvs_ver_coef_bytes;
        int  dvs_ver_proj_bytes;
        int  dvs_hor_proj_bytes;

        /* Flash */
        int num_flash_frames;
        enum atomisp_flash_state flash_state;
        enum atomisp_frame_status last_frame_status;

        /* continuous capture */
        struct atomisp_cont_capture_conf offline_parm;
        /* Flag to check if driver needs to update params to css */
        bool css_update_params_needed;
};

struct atomisp_css_params_with_list {
        /* parameters for CSS */
        struct atomisp_css_params params;
        struct list_head list;
};

struct atomisp_acc_fw {
        struct ia_css_fw_info *fw;
        unsigned int handle;
        unsigned int flags;
        unsigned int type;
        struct {
                size_t length;
                unsigned long css_ptr;
        } args[ATOMISP_ACC_NR_MEMORY];
        struct list_head list;
};

struct atomisp_map {
        ia_css_ptr ptr;
        size_t length;
        struct list_head list;
        /* FIXME: should keep book which maps are currently used
         * by binaries and not allow releasing those
         * which are in use. Implement by reference counting.
         */
};

struct atomisp_sub_device {
        struct v4l2_subdev subdev;
        struct media_pad pads[ATOMISP_SUBDEV_PADS_NUM];
        struct atomisp_pad_format fmt[ATOMISP_SUBDEV_PADS_NUM];
        u16 capture_pad; /* main capture pad; defines much of isp config */

        enum atomisp_subdev_input_entity input;
        unsigned int output;
        struct atomisp_video_pipe video_in;
        struct atomisp_video_pipe video_out_capture; /* capture output */
        struct atomisp_video_pipe video_out_vf;      /* viewfinder output */
        struct atomisp_video_pipe video_out_preview; /* preview output */
        struct atomisp_acc_pipe video_acc;
        /* video pipe main output */
        struct atomisp_video_pipe video_out_video_capture;
        /* struct isp_subdev_params params; */
        spinlock_t lock;
        struct atomisp_device *isp;
        struct v4l2_ctrl_handler ctrl_handler;
        struct v4l2_ctrl *fmt_auto;
        struct v4l2_ctrl *run_mode;
        struct v4l2_ctrl *depth_mode;
        struct v4l2_ctrl *vfpp;
        struct v4l2_ctrl *continuous_mode;
        struct v4l2_ctrl *continuous_raw_buffer_size;
        struct v4l2_ctrl *continuous_viewfinder;
        struct v4l2_ctrl *enable_raw_buffer_lock;

        /* ISP2401 */
        struct v4l2_ctrl *ion_dev_fd;
        struct v4l2_ctrl *select_isp_version;

        struct v4l2_ctrl *disable_dz;

        struct {
                struct list_head fw;
                struct list_head memory_maps;
                struct ia_css_pipe *pipeline;
                bool extension_mode;
                struct ida ida;
                struct completion acc_done;
                void *acc_stages;
        } acc;

        struct atomisp_subdev_params params;

        struct atomisp_stream_env stream_env[ATOMISP_INPUT_STREAM_NUM];

        struct v4l2_pix_format dvs_envelop;
        unsigned int s3a_bufs_in_css[IA_CSS_PIPE_ID_NUM];
        unsigned int dis_bufs_in_css;

        unsigned int metadata_bufs_in_css
        [ATOMISP_INPUT_STREAM_NUM][IA_CSS_PIPE_ID_NUM];
        /* The list of free and available metadata buffers for CSS */
        struct list_head metadata[ATOMISP_METADATA_TYPE_NUM];
        /* The list of metadata buffers which have been en-queued to CSS */
        struct list_head metadata_in_css[ATOMISP_METADATA_TYPE_NUM];
        /* The list of metadata buffers which are ready for userspace to get */
        struct list_head metadata_ready[ATOMISP_METADATA_TYPE_NUM];

        /* The list of free and available s3a stat buffers for CSS */
        struct list_head s3a_stats;
        /* The list of s3a stat buffers which have been en-queued to CSS */
        struct list_head s3a_stats_in_css;
        /* The list of s3a stat buffers which are ready for userspace to get */
        struct list_head s3a_stats_ready;

        struct list_head dis_stats;
        struct list_head dis_stats_in_css;
        spinlock_t dis_stats_lock;

        struct ia_css_frame *vf_frame; /* TODO: needed? */
        struct ia_css_frame *raw_output_frame;
        enum atomisp_frame_status frame_status[VIDEO_MAX_FRAME];

        /* This field specifies which camera (v4l2 input) is selected. */
        int input_curr;
        /* This field specifies which sensor is being selected when there
           are multiple sensors connected to the same MIPI port. */
        int sensor_curr;

        atomic_t sof_count;
        atomic_t sequence;      /* Sequence value that is assigned to buffer. */
        atomic_t sequence_temp;

        unsigned int streaming; /* Hold both mutex and lock to change this */
        bool stream_prepared; /* whether css stream is created */

        /* subdev index: will be used to show which subdev is holding the
         * resource, like which camera is used by which subdev
         */
        unsigned int index;

        /* delayed memory allocation for css */
        struct completion init_done;
        struct workqueue_struct *delayed_init_workq;
        unsigned int delayed_init;
        struct work_struct delayed_init_work;

        unsigned int latest_preview_exp_id; /* CSS ZSL/SDV raw buffer id */

        unsigned int mipi_frame_size;

        bool copy_mode; /* CSI2+ use copy mode */
        bool yuvpp_mode;        /* CSI2+ yuvpp pipe */

        int raw_buffer_bitmap[ATOMISP_MAX_EXP_ID / 32 +
                                                 1]; /* Record each Raw Buffer lock status */
        int raw_buffer_locked_count;
        spinlock_t raw_buffer_bitmap_lock;

        /* ISP 2400 */
        struct timer_list wdt;
        unsigned int wdt_duration;      /* in jiffies */
        unsigned long wdt_expires;

        /* ISP2401 */
        bool re_trigger_capture;

        struct atomisp_resolution sensor_array_res;
        bool high_speed_mode; /* Indicate whether now is a high speed mode */
        int pending_capture_request; /* Indicates the number of pending capture requests. */

        unsigned int preview_exp_id;
        unsigned int postview_exp_id;
};

extern const struct atomisp_in_fmt_conv atomisp_in_fmt_conv[];

u32 atomisp_subdev_uncompressed_code(u32 code);
bool atomisp_subdev_is_compressed(u32 code);
const struct atomisp_in_fmt_conv *atomisp_find_in_fmt_conv(u32 code);

/* ISP2400 */
const struct atomisp_in_fmt_conv *atomisp_find_in_fmt_conv_by_atomisp_in_fmt(
    enum atomisp_input_format atomisp_in_fmt);

/* ISP2401 */
const struct atomisp_in_fmt_conv
*atomisp_find_in_fmt_conv_by_atomisp_in_fmt(enum atomisp_input_format
        atomisp_in_fmt);

const struct atomisp_in_fmt_conv *atomisp_find_in_fmt_conv_compressed(u32 code);
bool atomisp_subdev_format_conversion(struct atomisp_sub_device *asd,
                                      unsigned int source_pad);
uint16_t atomisp_subdev_source_pad(struct video_device *vdev);

/* Get pointer to appropriate format */
struct v4l2_mbus_framefmt
*atomisp_subdev_get_ffmt(struct v4l2_subdev *sd,
                         struct v4l2_subdev_state *sd_state, uint32_t which,
                         uint32_t pad);
struct v4l2_rect *atomisp_subdev_get_rect(struct v4l2_subdev *sd,
        struct v4l2_subdev_state *sd_state,
        u32 which, uint32_t pad,
        uint32_t target);
int atomisp_subdev_set_selection(struct v4l2_subdev *sd,
                                 struct v4l2_subdev_state *sd_state,
                                 u32 which, uint32_t pad, uint32_t target,
                                 u32 flags, struct v4l2_rect *r);
/* Actually set the format */
void atomisp_subdev_set_ffmt(struct v4l2_subdev *sd,
                             struct v4l2_subdev_state *sd_state,
                             uint32_t which,
                             u32 pad, struct v4l2_mbus_framefmt *ffmt);

int atomisp_update_run_mode(struct atomisp_sub_device *asd);

void atomisp_subdev_cleanup_pending_events(struct atomisp_sub_device *asd);

void atomisp_subdev_unregister_entities(struct atomisp_sub_device *asd);
int atomisp_subdev_register_entities(struct atomisp_sub_device *asd,
                                     struct v4l2_device *vdev);
int atomisp_subdev_init(struct atomisp_device *isp);
void atomisp_subdev_cleanup(struct atomisp_device *isp);
int atomisp_create_pads_links(struct atomisp_device *isp);

#endif /* __ATOMISP_SUBDEV_H__ */