/*
 * Copyright 2012-14 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: AMD
 *
 */

#ifndef DC_INTERFACE_H_
#define DC_INTERFACE_H_

#include "dc_types.h"
#include "grph_object_defs.h"
#include "logger_types.h"
#include "gpio_types.h"
#include "link_service_types.h"
#include "grph_object_ctrl_defs.h"
#include <inc/hw/opp.h>

#include "inc/hw_sequencer.h"
#include "inc/compressor.h"
#include "inc/hw/dmcu.h"
#include "dml/display_mode_lib.h"

#define DC_VER "3.2.35"

#define MAX_SURFACES 3
#define MAX_PLANES 6
#define MAX_STREAMS 6
#define MAX_SINKS_PER_LINK 4

/*******************************************************************************
 * Display Core Interfaces
 ******************************************************************************/
struct dc_versions {
        const char *dc_ver;
        struct dmcu_version dmcu_version;
};

enum dc_plane_type {
        DC_PLANE_TYPE_INVALID,
        DC_PLANE_TYPE_DCE_RGB,
        DC_PLANE_TYPE_DCE_UNDERLAY,
        DC_PLANE_TYPE_DCN_UNIVERSAL,
};

struct dc_plane_cap {
        enum dc_plane_type type;
        uint32_t blends_with_above : 1;
        uint32_t blends_with_below : 1;
        uint32_t per_pixel_alpha : 1;
        struct {
                uint32_t argb8888 : 1;
                uint32_t nv12 : 1;
                uint32_t fp16 : 1;
                uint32_t p010 : 1;
                uint32_t ayuv : 1;
        } pixel_format_support;
        // max upscaling factor x1000
        // upscaling factors are always >= 1
        // for example, 1080p -> 8K is 4.0, or 4000 raw value
        struct {
                uint32_t argb8888;
                uint32_t nv12;
                uint32_t fp16;
        } max_upscale_factor;
        // max downscale factor x1000
        // downscale factors are always <= 1
        // for example, 8K -> 1080p is 0.25, or 250 raw value
        struct {
                uint32_t argb8888;
                uint32_t nv12;
                uint32_t fp16;
        } max_downscale_factor;
};

struct dc_caps {
        uint32_t max_streams;
        uint32_t max_links;
        uint32_t max_audios;
        uint32_t max_slave_planes;
        uint32_t max_planes;
        uint32_t max_downscale_ratio;
        uint32_t i2c_speed_in_khz;
        uint32_t dmdata_alloc_size;
        unsigned int max_cursor_size;
        unsigned int max_video_width;
        int linear_pitch_alignment;
        bool dcc_const_color;
        bool dynamic_audio;
        bool is_apu;
        bool dual_link_dvi;
        bool post_blend_color_processing;
        bool force_dp_tps4_for_cp2520;
        bool disable_dp_clk_share;
        bool psp_setup_panel_mode;
#ifdef CONFIG_DRM_AMD_DC_DCN2_0
        bool hw_3d_lut;
#endif
        struct dc_plane_cap planes[MAX_PLANES];
};

#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
struct dc_bug_wa {
        bool no_connect_phy_config;
        bool dedcn20_305_wa;
};
#endif

struct dc_dcc_surface_param {
        struct dc_size surface_size;
        enum surface_pixel_format format;
        enum swizzle_mode_values swizzle_mode;
        enum dc_scan_direction scan;
};

struct dc_dcc_setting {
        unsigned int max_compressed_blk_size;
        unsigned int max_uncompressed_blk_size;
        bool independent_64b_blks;
};

struct dc_surface_dcc_cap {
        union {
                struct {
                        struct dc_dcc_setting rgb;
                } grph;

                struct {
                        struct dc_dcc_setting luma;
                        struct dc_dcc_setting chroma;
                } video;
        };

        bool capable;
        bool const_color_support;
};

struct dc_static_screen_events {
        bool force_trigger;
        bool cursor_update;
        bool surface_update;
        bool overlay_update;
};


/* Surface update type is used by dc_update_surfaces_and_stream
 * The update type is determined at the very beginning of the function based
 * on parameters passed in and decides how much programming (or updating) is
 * going to be done during the call.
 *
 * UPDATE_TYPE_FAST is used for really fast updates that do not require much
 * logical calculations or hardware register programming. This update MUST be
 * ISR safe on windows. Currently fast update will only be used to flip surface
 * address.
 *
 * UPDATE_TYPE_MED is used for slower updates which require significant hw
 * re-programming however do not affect bandwidth consumption or clock
 * requirements. At present, this is the level at which front end updates
 * that do not require us to run bw_calcs happen. These are in/out transfer func
 * updates, viewport offset changes, recout size changes and pixel depth changes.
 * This update can be done at ISR, but we want to minimize how often this happens.
 *
 * UPDATE_TYPE_FULL is slow. Really slow. This requires us to recalculate our
 * bandwidth and clocks, possibly rearrange some pipes and reprogram anything front
 * end related. Any time viewport dimensions, recout dimensions, scaling ratios or
 * gamma need to be adjusted or pipe needs to be turned on (or disconnected) we do
 * a full update. This cannot be done at ISR level and should be a rare event.
 * Unless someone is stress testing mpo enter/exit, playing with colour or adjusting
 * underscan we don't expect to see this call at all.
 */

enum surface_update_type {
        UPDATE_TYPE_FAST, /* super fast, safe to execute in isr */
        UPDATE_TYPE_MED,  /* ISR safe, most of programming needed, no bw/clk change*/
        UPDATE_TYPE_FULL, /* may need to shuffle resources */
};

/* Forward declaration*/
struct dc;
struct dc_plane_state;
struct dc_state;


struct dc_cap_funcs {
        bool (*get_dcc_compression_cap)(const struct dc *dc,
                        const struct dc_dcc_surface_param *input,
                        struct dc_surface_dcc_cap *output);
};

struct link_training_settings;


/* Structure to hold configuration flags set by dm at dc creation. */
struct dc_config {
        bool gpu_vm_support;
        bool disable_disp_pll_sharing;
        bool fbc_support;
        bool optimize_edp_link_rate;
        bool disable_fractional_pwm;
        bool allow_seamless_boot_optimization;
        bool power_down_display_on_boot;
        bool edp_not_connected;
        bool forced_clocks;

};

enum visual_confirm {
        VISUAL_CONFIRM_DISABLE = 0,
        VISUAL_CONFIRM_SURFACE = 1,
        VISUAL_CONFIRM_HDR = 2,
};

enum dcc_option {
        DCC_ENABLE = 0,
        DCC_DISABLE = 1,
        DCC_HALF_REQ_DISALBE = 2,
};

enum pipe_split_policy {
        MPC_SPLIT_DYNAMIC = 0,
        MPC_SPLIT_AVOID = 1,
        MPC_SPLIT_AVOID_MULT_DISP = 2,
};

enum wm_report_mode {
        WM_REPORT_DEFAULT = 0,
        WM_REPORT_OVERRIDE = 1,
};

/*
 * For any clocks that may differ per pipe
 * only the max is stored in this structure
 */
struct dc_clocks {
        int dispclk_khz;
        int max_supported_dppclk_khz;
        int dppclk_khz;
        int dcfclk_khz;
        int socclk_khz;
        int dcfclk_deep_sleep_khz;
        int fclk_khz;
        int phyclk_khz;
        int dramclk_khz;
        bool p_state_change_support;
};

struct dc_bw_validation_profile {
        bool enable;

        unsigned long long total_ticks;
        unsigned long long voltage_level_ticks;
        unsigned long long watermark_ticks;
        unsigned long long rq_dlg_ticks;

        unsigned long long total_count;
        unsigned long long skip_fast_count;
        unsigned long long skip_pass_count;
        unsigned long long skip_fail_count;
};

#define BW_VAL_TRACE_SETUP() \
                unsigned long long end_tick = 0; \
                unsigned long long voltage_level_tick = 0; \
                unsigned long long watermark_tick = 0; \
                unsigned long long start_tick = dc->debug.bw_val_profile.enable ? \
                                dm_get_timestamp(dc->ctx) : 0

#define BW_VAL_TRACE_COUNT() \
                if (dc->debug.bw_val_profile.enable) \
                        dc->debug.bw_val_profile.total_count++

#define BW_VAL_TRACE_SKIP(status) \
                if (dc->debug.bw_val_profile.enable) { \
                        if (!voltage_level_tick) \
                                voltage_level_tick = dm_get_timestamp(dc->ctx); \
                        dc->debug.bw_val_profile.skip_ ## status ## _count++; \
                }

#define BW_VAL_TRACE_END_VOLTAGE_LEVEL() \
                if (dc->debug.bw_val_profile.enable) \
                        voltage_level_tick = dm_get_timestamp(dc->ctx)

#define BW_VAL_TRACE_END_WATERMARKS() \
                if (dc->debug.bw_val_profile.enable) \
                        watermark_tick = dm_get_timestamp(dc->ctx)

#define BW_VAL_TRACE_FINISH() \
                if (dc->debug.bw_val_profile.enable) { \
                        end_tick = dm_get_timestamp(dc->ctx); \
                        dc->debug.bw_val_profile.total_ticks += end_tick - start_tick; \
                        dc->debug.bw_val_profile.voltage_level_ticks += voltage_level_tick - start_tick; \
                        if (watermark_tick) { \
                                dc->debug.bw_val_profile.watermark_ticks += watermark_tick - voltage_level_tick; \
                                dc->debug.bw_val_profile.rq_dlg_ticks += end_tick - watermark_tick; \
                        } \
                }

struct dc_debug_options {
        enum visual_confirm visual_confirm;
        bool sanity_checks;
        bool max_disp_clk;
        bool surface_trace;
        bool timing_trace;
        bool clock_trace;
        bool validation_trace;
        bool bandwidth_calcs_trace;
        int max_downscale_src_width;

        /* stutter efficiency related */
        bool disable_stutter;
        bool use_max_lb;
        enum dcc_option disable_dcc;
        enum pipe_split_policy pipe_split_policy;
        bool force_single_disp_pipe_split;
        bool voltage_align_fclk;

        bool disable_dfs_bypass;
        bool disable_dpp_power_gate;
        bool disable_hubp_power_gate;
#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
        bool disable_dsc_power_gate;
#endif
        bool disable_pplib_wm_range;
        enum wm_report_mode pplib_wm_report_mode;
        unsigned int min_disp_clk_khz;
        int sr_exit_time_dpm0_ns;
        int sr_enter_plus_exit_time_dpm0_ns;
        int sr_exit_time_ns;
        int sr_enter_plus_exit_time_ns;
        int urgent_latency_ns;
        uint32_t underflow_assert_delay_us;
        int percent_of_ideal_drambw;
        int dram_clock_change_latency_ns;
        bool optimized_watermark;
        int always_scale;
        bool disable_pplib_clock_request;
        bool disable_clock_gate;
        bool disable_dmcu;
        bool disable_psr;
        bool force_abm_enable;
        bool disable_stereo_support;
        bool vsr_support;
        bool performance_trace;
        bool az_endpoint_mute_only;
        bool always_use_regamma;
        bool p010_mpo_support;
        bool recovery_enabled;
        bool avoid_vbios_exec_table;
        bool scl_reset_length10;
        bool hdmi20_disable;
        bool skip_detection_link_training;
        unsigned int force_odm_combine; //bit vector based on otg inst
        unsigned int force_fclk_khz;
        bool disable_tri_buf;
        struct dc_bw_validation_profile bw_val_profile;
#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
        bool disable_fec;
#endif
        /* This forces a hard min on the DCFCLK requested to SMU/PP
         * watermarks are not affected.
         */
        unsigned int force_min_dcfclk_mhz;
};

struct dc_debug_data {
        uint32_t ltFailCount;
        uint32_t i2cErrorCount;
        uint32_t auxErrorCount;
};

#ifdef CONFIG_DRM_AMD_DC_DCN2_0
struct dc_phy_addr_space_config {
        struct {
                uint64_t start_addr;
                uint64_t end_addr;
                uint64_t fb_top;
                uint64_t fb_offset;
                uint64_t fb_base;
                uint64_t agp_top;
                uint64_t agp_bot;
                uint64_t agp_base;
        } system_aperture;

        struct {
                uint64_t page_table_start_addr;
                uint64_t page_table_end_addr;
                uint64_t page_table_base_addr;
        } gart_config;

        bool valid;
};

struct dc_virtual_addr_space_config {
        uint64_t        page_table_base_addr;
        uint64_t        page_table_start_addr;
        uint64_t        page_table_end_addr;
        uint32_t        page_table_block_size_in_bytes;
        uint8_t         page_table_depth; // 1 = 1 level, 2 = 2 level, etc.  0 = invalid
};
#endif

struct dc_bounding_box_overrides {
        int sr_exit_time_ns;
        int sr_enter_plus_exit_time_ns;
        int urgent_latency_ns;
        int percent_of_ideal_drambw;
        int dram_clock_change_latency_ns;
        /* This forces a hard min on the DCFCLK we use
         * for DML.  Unlike the debug option for forcing
         * DCFCLK, this override affects watermark calculations
         */
        int min_dcfclk_mhz;
};

struct dc_state;
struct resource_pool;
struct dce_hwseq;
struct gpu_info_soc_bounding_box_v1_0;
struct dc {
        struct dc_versions versions;
        struct dc_caps caps;
        struct dc_cap_funcs cap_funcs;
        struct dc_config config;
        struct dc_debug_options debug;
        struct dc_bounding_box_overrides bb_overrides;
#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
        struct dc_bug_wa work_arounds;
#endif
        struct dc_context *ctx;
#ifdef CONFIG_DRM_AMD_DC_DCN2_0
        struct dc_phy_addr_space_config vm_pa_config;
#endif

        uint8_t link_count;
        struct dc_link *links[MAX_PIPES * 2];

        struct dc_state *current_state;
        struct resource_pool *res_pool;

        struct clk_mgr *clk_mgr;

        /* Display Engine Clock levels */
        struct dm_pp_clock_levels sclk_lvls;

        /* Inputs into BW and WM calculations. */
        struct bw_calcs_dceip *bw_dceip;
        struct bw_calcs_vbios *bw_vbios;
#ifdef CONFIG_DRM_AMD_DC_DCN1_0
        struct dcn_soc_bounding_box *dcn_soc;
        struct dcn_ip_params *dcn_ip;
        struct display_mode_lib dml;
#endif

        /* HW functions */
        struct hw_sequencer_funcs hwss;
        struct dce_hwseq *hwseq;

        /* Require to optimize clocks and bandwidth for added/removed planes */
        bool optimized_required;

        /* Require to maintain clocks and bandwidth for UEFI enabled HW */
        bool optimize_seamless_boot;

        /* FBC compressor */
        struct compressor *fbc_compressor;

        struct dc_debug_data debug_data;

        const char *build_id;
#ifdef CONFIG_DRM_AMD_DC_DCN2_0
        struct vm_helper *vm_helper;
        const struct gpu_info_soc_bounding_box_v1_0 *soc_bounding_box;
#endif
};

enum frame_buffer_mode {
        FRAME_BUFFER_MODE_LOCAL_ONLY = 0,
        FRAME_BUFFER_MODE_ZFB_ONLY,
        FRAME_BUFFER_MODE_MIXED_ZFB_AND_LOCAL,
} ;

struct dchub_init_data {
        int64_t zfb_phys_addr_base;
        int64_t zfb_mc_base_addr;
        uint64_t zfb_size_in_byte;
        enum frame_buffer_mode fb_mode;
        bool dchub_initialzied;
        bool dchub_info_valid;
};

struct dc_init_data {
        struct hw_asic_id asic_id;
        void *driver; /* ctx */
        struct cgs_device *cgs_device;
        struct dc_bounding_box_overrides bb_overrides;

        int num_virtual_links;
        /*
         * If 'vbios_override' not NULL, it will be called instead
         * of the real VBIOS. Intended use is Diagnostics on FPGA.
         */
        struct dc_bios *vbios_override;
        enum dce_environment dce_environment;

        struct dc_config flags;
        uint32_t log_mask;
#ifdef CONFIG_DRM_AMD_DC_DCN2_0
        /**
         * gpu_info FW provided soc bounding box struct or 0 if not
         * available in FW
         */
        const struct gpu_info_soc_bounding_box_v1_0 *soc_bounding_box;
#endif
};

struct dc_callback_init {
        uint8_t reserved;
};

struct dc *dc_create(const struct dc_init_data *init_params);
int dc_get_vmid_use_vector(struct dc *dc);
#ifdef CONFIG_DRM_AMD_DC_DCN2_0
void dc_setup_vm_context(struct dc *dc, struct dc_virtual_addr_space_config *va_config, int vmid);
/* Returns the number of vmids supported */
int dc_setup_system_context(struct dc *dc, struct dc_phy_addr_space_config *pa_config);
#endif
void dc_init_callbacks(struct dc *dc,
                const struct dc_callback_init *init_params);
void dc_destroy(struct dc **dc);

/*******************************************************************************
 * Surface Interfaces
 ******************************************************************************/

enum {
        TRANSFER_FUNC_POINTS = 1025
};

struct dc_hdr_static_metadata {
        /* display chromaticities and white point in units of 0.00001 */
        unsigned int chromaticity_green_x;
        unsigned int chromaticity_green_y;
        unsigned int chromaticity_blue_x;
        unsigned int chromaticity_blue_y;
        unsigned int chromaticity_red_x;
        unsigned int chromaticity_red_y;
        unsigned int chromaticity_white_point_x;
        unsigned int chromaticity_white_point_y;

        uint32_t min_luminance;
        uint32_t max_luminance;
        uint32_t maximum_content_light_level;
        uint32_t maximum_frame_average_light_level;
};

enum dc_transfer_func_type {
        TF_TYPE_PREDEFINED,
        TF_TYPE_DISTRIBUTED_POINTS,
        TF_TYPE_BYPASS,
        TF_TYPE_HWPWL
};

struct dc_transfer_func_distributed_points {
        struct fixed31_32 red[TRANSFER_FUNC_POINTS];
        struct fixed31_32 green[TRANSFER_FUNC_POINTS];
        struct fixed31_32 blue[TRANSFER_FUNC_POINTS];

        uint16_t end_exponent;
        uint16_t x_point_at_y1_red;
        uint16_t x_point_at_y1_green;
        uint16_t x_point_at_y1_blue;
};

enum dc_transfer_func_predefined {
        TRANSFER_FUNCTION_SRGB,
        TRANSFER_FUNCTION_BT709,
        TRANSFER_FUNCTION_PQ,
        TRANSFER_FUNCTION_LINEAR,
        TRANSFER_FUNCTION_UNITY,
        TRANSFER_FUNCTION_HLG,
        TRANSFER_FUNCTION_HLG12,
        TRANSFER_FUNCTION_GAMMA22
};

struct dc_transfer_func {
        struct kref refcount;
        enum dc_transfer_func_type type;
        enum dc_transfer_func_predefined tf;
        /* FP16 1.0 reference level in nits, default is 80 nits, only for PQ*/
        uint32_t sdr_ref_white_level;
        struct dc_context *ctx;
        union {
                struct pwl_params pwl;
                struct dc_transfer_func_distributed_points tf_pts;
        };
};

#if defined(CONFIG_DRM_AMD_DC_DCN2_0)


struct dc_3dlut {
        struct kref refcount;
        struct tetrahedral_params lut_3d;
        uint32_t hdr_multiplier;
        bool initialized;
        struct dc_context *ctx;
};
#endif
/*
 * This structure is filled in by dc_surface_get_status and contains
 * the last requested address and the currently active address so the called
 * can determine if there are any outstanding flips
 */
struct dc_plane_status {
        struct dc_plane_address requested_address;
        struct dc_plane_address current_address;
        bool is_flip_pending;
        bool is_right_eye;
};

union surface_update_flags {

        struct {
                uint32_t addr_update:1;
                /* Medium updates */
                uint32_t dcc_change:1;
                uint32_t color_space_change:1;
                uint32_t horizontal_mirror_change:1;
                uint32_t per_pixel_alpha_change:1;
                uint32_t global_alpha_change:1;
                uint32_t sdr_white_level:1;
                uint32_t rotation_change:1;
                uint32_t swizzle_change:1;
                uint32_t scaling_change:1;
                uint32_t position_change:1;
                uint32_t in_transfer_func_change:1;
                uint32_t input_csc_change:1;
                uint32_t coeff_reduction_change:1;
                uint32_t output_tf_change:1;
                uint32_t pixel_format_change:1;
                uint32_t plane_size_change:1;

                /* Full updates */
                uint32_t new_plane:1;
                uint32_t bpp_change:1;
                uint32_t gamma_change:1;
                uint32_t bandwidth_change:1;
                uint32_t clock_change:1;
                uint32_t stereo_format_change:1;
                uint32_t full_update:1;
        } bits;

        uint32_t raw;
};

struct dc_plane_state {
        struct dc_plane_address address;
        struct dc_plane_flip_time time;
#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
        bool triplebuffer_flips;
#endif
        struct scaling_taps scaling_quality;
        struct rect src_rect;
        struct rect dst_rect;
        struct rect clip_rect;

        union plane_size plane_size;
        union dc_tiling_info tiling_info;

        struct dc_plane_dcc_param dcc;

        struct dc_gamma *gamma_correction;
        struct dc_transfer_func *in_transfer_func;
        struct dc_bias_and_scale *bias_and_scale;
        struct dc_csc_transform input_csc_color_matrix;
        struct fixed31_32 coeff_reduction_factor;
        uint32_t sdr_white_level;

        // TODO: No longer used, remove
        struct dc_hdr_static_metadata hdr_static_ctx;

        enum dc_color_space color_space;

#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
        struct dc_3dlut *lut3d_func;
        struct dc_transfer_func *in_shaper_func;
        struct dc_transfer_func *blend_tf;
#endif

        enum surface_pixel_format format;
        enum dc_rotation_angle rotation;
        enum plane_stereo_format stereo_format;

        bool is_tiling_rotated;
        bool per_pixel_alpha;
        bool global_alpha;
        int  global_alpha_value;
        bool visible;
        bool flip_immediate;
        bool horizontal_mirror;

        union surface_update_flags update_flags;
        /* private to DC core */
        struct dc_plane_status status;
        struct dc_context *ctx;

        /* HACK: Workaround for forcing full reprogramming under some conditions */
        bool force_full_update;

        /* private to dc_surface.c */
        enum dc_irq_source irq_source;
        struct kref refcount;
};

struct dc_plane_info {
        union plane_size plane_size;
        union dc_tiling_info tiling_info;
        struct dc_plane_dcc_param dcc;
        enum surface_pixel_format format;
        enum dc_rotation_angle rotation;
        enum plane_stereo_format stereo_format;
        enum dc_color_space color_space;
        unsigned int sdr_white_level;
        bool horizontal_mirror;
        bool visible;
        bool per_pixel_alpha;
        bool global_alpha;
        int  global_alpha_value;
        bool input_csc_enabled;
};

struct dc_scaling_info {
        struct rect src_rect;
        struct rect dst_rect;
        struct rect clip_rect;
        struct scaling_taps scaling_quality;
};

struct dc_surface_update {
        struct dc_plane_state *surface;

        /* isr safe update parameters.  null means no updates */
        const struct dc_flip_addrs *flip_addr;
        const struct dc_plane_info *plane_info;
        const struct dc_scaling_info *scaling_info;

        /* following updates require alloc/sleep/spin that is not isr safe,
         * null means no updates
         */
        const struct dc_gamma *gamma;
        const struct dc_transfer_func *in_transfer_func;

        const struct dc_csc_transform *input_csc_color_matrix;
        const struct fixed31_32 *coeff_reduction_factor;
#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
        const struct dc_transfer_func *func_shaper;
        const struct dc_3dlut *lut3d_func;
        const struct dc_transfer_func *blend_tf;
#endif
};

/*
 * Create a new surface with default parameters;
 */
struct dc_plane_state *dc_create_plane_state(struct dc *dc);
const struct dc_plane_status *dc_plane_get_status(
                const struct dc_plane_state *plane_state);

void dc_plane_state_retain(struct dc_plane_state *plane_state);
void dc_plane_state_release(struct dc_plane_state *plane_state);

void dc_gamma_retain(struct dc_gamma *dc_gamma);
void dc_gamma_release(struct dc_gamma **dc_gamma);
struct dc_gamma *dc_create_gamma(void);

void dc_transfer_func_retain(struct dc_transfer_func *dc_tf);
void dc_transfer_func_release(struct dc_transfer_func *dc_tf);
struct dc_transfer_func *dc_create_transfer_func(void);

#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
struct dc_3dlut *dc_create_3dlut_func(void);
void dc_3dlut_func_release(struct dc_3dlut *lut);
void dc_3dlut_func_retain(struct dc_3dlut *lut);
#endif
/*
 * This structure holds a surface address.  There could be multiple addresses
 * in cases such as Stereo 3D, Planar YUV, etc.  Other per-flip attributes such
 * as frame durations and DCC format can also be set.
 */
struct dc_flip_addrs {
        struct dc_plane_address address;
        unsigned int flip_timestamp_in_us;
        bool flip_immediate;
        /* TODO: add flip duration for FreeSync */
};

bool dc_post_update_surfaces_to_stream(
                struct dc *dc);

#include "dc_stream.h"

/*
 * Structure to store surface/stream associations for validation
 */
struct dc_validation_set {
        struct dc_stream_state *stream;
        struct dc_plane_state *plane_states[MAX_SURFACES];
        uint8_t plane_count;
};

bool dc_validate_seamless_boot_timing(const struct dc *dc,
                                const struct dc_sink *sink,
                                struct dc_crtc_timing *crtc_timing);

enum dc_status dc_validate_plane(struct dc *dc, const struct dc_plane_state *plane_state);

void get_clock_requirements_for_state(struct dc_state *state, struct AsicStateEx *info);

/*
 * fast_validate: we return after determining if we can support the new state,
 * but before we populate the programming info
 */
enum dc_status dc_validate_global_state(
                struct dc *dc,
                struct dc_state *new_ctx,
                bool fast_validate);


void dc_resource_state_construct(
                const struct dc *dc,
                struct dc_state *dst_ctx);

void dc_resource_state_copy_construct(
                const struct dc_state *src_ctx,
                struct dc_state *dst_ctx);

void dc_resource_state_copy_construct_current(
                const struct dc *dc,
                struct dc_state *dst_ctx);

void dc_resource_state_destruct(struct dc_state *context);

/*
 * TODO update to make it about validation sets
 * Set up streams and links associated to drive sinks
 * The streams parameter is an absolute set of all active streams.
 *
 * After this call:
 *   Phy, Encoder, Timing Generator are programmed and enabled.
 *   New streams are enabled with blank stream; no memory read.
 */
bool dc_commit_state(struct dc *dc, struct dc_state *context);


struct dc_state *dc_create_state(struct dc *dc);
struct dc_state *dc_copy_state(struct dc_state *src_ctx);
void dc_retain_state(struct dc_state *context);
void dc_release_state(struct dc_state *context);

/*******************************************************************************
 * Link Interfaces
 ******************************************************************************/

struct dpcd_caps {
        union dpcd_rev dpcd_rev;
        union max_lane_count max_ln_count;
        union max_down_spread max_down_spread;
        union dprx_feature dprx_feature;

        /* valid only for eDP v1.4 or higher*/
        uint8_t edp_supported_link_rates_count;
        enum dc_link_rate edp_supported_link_rates[8];

        /* dongle type (DP converter, CV smart dongle) */
        enum display_dongle_type dongle_type;
        /* branch device or sink device */
        bool is_branch_dev;
        /* Dongle's downstream count. */
        union sink_count sink_count;
        /* If dongle_type == DISPLAY_DONGLE_DP_HDMI_CONVERTER,
        indicates 'Frame Sequential-to-lllFrame Pack' conversion capability.*/
        struct dc_dongle_caps dongle_caps;

        uint32_t sink_dev_id;
        int8_t sink_dev_id_str[6];
        int8_t sink_hw_revision;
        int8_t sink_fw_revision[2];

        uint32_t branch_dev_id;
        int8_t branch_dev_name[6];
        int8_t branch_hw_revision;
        int8_t branch_fw_revision[2];

        bool allow_invalid_MSA_timing_param;
        bool panel_mode_edp;
        bool dpcd_display_control_capable;
        bool ext_receiver_cap_field_present;
#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
        union dpcd_fec_capability fec_cap;
        struct dpcd_dsc_capabilities dsc_caps;
#endif
};

#include "dc_link.h"

/*******************************************************************************
 * Sink Interfaces - A sink corresponds to a display output device
 ******************************************************************************/

struct dc_container_id {
        // 128bit GUID in binary form
        unsigned char  guid[16];
        // 8 byte port ID -> ELD.PortID
        unsigned int   portId[2];
        // 128bit GUID in binary formufacturer name -> ELD.ManufacturerName
        unsigned short manufacturerName;
        // 2 byte product code -> ELD.ProductCode
        unsigned short productCode;
};


#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
struct dc_sink_dsc_caps {
        // 'true' if these are virtual DPCD's DSC caps (immediately upstream of sink in MST topology),
        // 'false' if they are sink's DSC caps
        bool is_virtual_dpcd_dsc;
        struct dsc_dec_dpcd_caps dsc_dec_caps;
};
#endif

/*
 * The sink structure contains EDID and other display device properties
 */
struct dc_sink {
        enum signal_type sink_signal;
        struct dc_edid dc_edid; /* raw edid */
        struct dc_edid_caps edid_caps; /* parse display caps */
        struct dc_container_id *dc_container_id;
        uint32_t dongle_max_pix_clk;
        void *priv;
        struct stereo_3d_features features_3d[TIMING_3D_FORMAT_MAX];
        bool converter_disable_audio;

#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
        struct dc_sink_dsc_caps sink_dsc_caps;
#endif

        /* private to DC core */
        struct dc_link *link;
        struct dc_context *ctx;

        uint32_t sink_id;

        /* private to dc_sink.c */
        // refcount must be the last member in dc_sink, since we want the
        // sink structure to be logically cloneable up to (but not including)
        // refcount
        struct kref refcount;
};

void dc_sink_retain(struct dc_sink *sink);
void dc_sink_release(struct dc_sink *sink);

struct dc_sink_init_data {
        enum signal_type sink_signal;
        struct dc_link *link;
        uint32_t dongle_max_pix_clk;
        bool converter_disable_audio;
};

struct dc_sink *dc_sink_create(const struct dc_sink_init_data *init_params);

/* Newer interfaces  */
struct dc_cursor {
        struct dc_plane_address address;
        struct dc_cursor_attributes attributes;
};


/*******************************************************************************
 * Interrupt interfaces
 ******************************************************************************/

enum dc_irq_source dc_interrupt_to_irq_source(
                struct dc *dc,
                uint32_t src_id,
                uint32_t ext_id);
bool dc_interrupt_set(struct dc *dc, enum dc_irq_source src, bool enable);
void dc_interrupt_ack(struct dc *dc, enum dc_irq_source src);
enum dc_irq_source dc_get_hpd_irq_source_at_index(
                struct dc *dc, uint32_t link_index);

/*******************************************************************************
 * Power Interfaces
 ******************************************************************************/

void dc_set_power_state(
                struct dc *dc,
                enum dc_acpi_cm_power_state power_state);
void dc_resume(struct dc *dc);
unsigned int dc_get_current_backlight_pwm(struct dc *dc);
unsigned int dc_get_target_backlight_pwm(struct dc *dc);

bool dc_is_dmcu_initialized(struct dc *dc);

#if defined(CONFIG_DRM_AMD_DC_DSC_SUPPORT)
/*******************************************************************************
 * DSC Interfaces
 ******************************************************************************/
#include "dc_dsc.h"
#endif
#endif /* DC_INTERFACE_H_ */