//
// Copyright (C) 2015-2018  Markus Hiienkari <mhiienka@niksula.hut.fi>
//
// This file is part of Open Source Scan Converter project.
//
// 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 3 of the License, or
// (at your option) any later version.
//
// 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.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//

#ifndef TVP7002_H_
#define TVP7002_H_

#include "tvp7002_regs.h"
#include "video_modes.h"
#include "sysconfig.h"

#define DEFAULT_VSYNC_THOLD     0x44
#define DEFAULT_LINELEN_TOL     0x06
#define DEFAULT_SAMPLER_PHASE   0x10
#define DEFAULT_PRE_COAST       1
#define DEFAULT_POST_COAST      0
#define DEFAULT_SYNC_LPF        0
#define DEFAULT_SYNC_VTH        0x0B
#define DEFAULT_FINE_GAIN       26
#define DEFAULT_FINE_OFFSET     0x80
#define DEFAULT_COARSE_GAIN     0x8
#define DEFAULT_ALC_H_FILTER    0x3
#define DEFAULT_ALC_V_FILTER    0x9

#define TVP_INTCLK_HZ           6500000UL
#define TVP_EXTCLK_HZ           27000000UL

typedef enum {
    TVP_INPUT1 = 0,
    TVP_INPUT2 = 1,
    TVP_INPUT3 = 2
} tvp_input_t;

typedef enum {
    TVP_SOG1 = 0,
    TVP_SOG2 = 1,
    TVP_SOG3 = 2,
    TVP_HV_A = 3,
    TVP_HV_B = 4,
    TVP_CS_A = 5,
    TVP_CS_B = 6
} tvp_sync_input_t;

typedef enum {
    REFCLK_EXT27    = 0,
    REFCLK_INTCLK   = 1
} tvp_refclk_t;

typedef struct {
    const char *name;
    alt_u16 R_Y;
    alt_u16 R_Pb;
    alt_u16 R_Pr;
    alt_u16 G_Y;
    alt_u16 G_Pb;
    alt_u16 G_Pr;
    alt_u16 B_Y;
    alt_u16 B_Pb;
    alt_u16 B_Pr;
} ypbpr_to_rgb_csc_t;

typedef struct {
    alt_u8 r_f_off;
    alt_u8 g_f_off;
    alt_u8 b_f_off;
    alt_u8 r_f_gain;
    alt_u8 g_f_gain;
    alt_u8 b_f_gain;
    alt_u8 c_gain;
} __attribute__((packed)) color_setup_t;


inline alt_u32 tvp_readreg(alt_u32 regaddr);

inline void tvp_writereg(alt_u32 regaddr, alt_u8 data);

inline void tvp_reset();

inline void tvp_disable_output();

inline void tvp_enable_output();

inline void tvp_set_hpllcoast(alt_u8 pre, alt_u8 post);

inline void tvp_set_linelen_tol(alt_u8 val);

inline void tvp_set_ssthold(alt_u8 vsdetect_thold);

void tvp_init();

void tvp_set_gain_offset(color_setup_t *col);

void tvp_setup_hpll(alt_u16 h_samplerate, alt_u16 refclks_per_line, alt_u8 plldivby2);

void tvp_sel_csc(const ypbpr_to_rgb_csc_t *csc);

void tvp_set_lpf(alt_u8 val);

void tvp_set_sync_lpf(alt_u8 val);

void tvp_set_clp_lpf(alt_u8 val);

alt_u8 tvp_set_hpll_phase(alt_u8 val, alt_u8 sample_mult);

void tvp_set_sog_thold(alt_u8 val);

void tvp_set_alcfilt(alt_u8 nsv, alt_u8 nsh);

void tvp_source_setup(video_type type, alt_u16 h_samplerate, alt_u16 refclks_per_line, alt_u8 plldivby2, alt_u8 h_syncinlen, alt_8 clamp_user_offset);

void tvp_source_sel(tvp_input_t input, tvp_sync_input_t syncinput, video_format fmt);

alt_u8 tvp_check_sync(tvp_sync_input_t syncinput);

#endif /* TVP7002_H_ */