/* Copyright 2017 Jason Williams
 * Copyright 2018 Jack Humbert
 * Copyright 2018 Yiancar
 * Copyright 2021 Doni Crosby
 *
 * 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 2 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/>.
 */

#pragma once

#include <stdint.h>
#include <stdbool.h>
#include "progmem.h"
#include "util.h"

// ======== DEPRECATED DEFINES - DO NOT USE ========
#ifdef ISSI_TIMEOUT
#    define IS31FL3737_I2C_TIMEOUT ISSI_TIMEOUT
#endif
#ifdef ISSI_PERSISTENCE
#    define IS31FL3737_I2C_PERSISTENCE ISSI_PERSISTENCE
#endif
#ifdef ISSI_PWM_FREQUENCY
#    define IS31FL3737_PWM_FREQUENCY ISSI_PWM_FREQUENCY
#endif
#ifdef ISSI_SWPULLUP
#    define IS31FL3737_SW_PULLUP ISSI_SWPULLUP
#endif
#ifdef ISSI_CSPULLUP
#    define IS31FL3737_CS_PULLDOWN ISSI_CSPULLUP
#endif
#ifdef ISSI_GLOBALCURRENT
#    define IS31FL3737_GLOBAL_CURRENT ISSI_GLOBALCURRENT
#endif

#define PUR_0R IS31FL3737_PUR_0_OHM
#define PUR_05KR IS31FL3737_PUR_0K5_OHM
#define PUR_1KR IS31FL3737_PUR_1K_OHM
#define PUR_2KR IS31FL3737_PUR_2K_OHM
#define PUR_4KR IS31FL3737_PUR_4K_OHM
#define PUR_8KR IS31FL3737_PUR_8K_OHM
#define PUR_16KR IS31FL3737_PUR_16K_OHM
#define PUR_32KR IS31FL3737_PUR_32K_OHM
// ========

#define IS31FL3737_REG_INTERRUPT_MASK 0xF0
#define IS31FL3737_REG_INTERRUPT_STATUS 0xF1

#define IS31FL3737_REG_COMMAND 0xFD

#define IS31FL3737_COMMAND_LED_CONTROL 0x00
#define IS31FL3737_COMMAND_PWM 0x01
#define IS31FL3737_COMMAND_AUTO_BREATH 0x02
#define IS31FL3737_COMMAND_FUNCTION 0x03

#define IS31FL3737_FUNCTION_REG_CONFIGURATION 0x00
#define IS31FL3737_FUNCTION_REG_GLOBAL_CURRENT 0x01
#define IS31FL3737_FUNCTION_REG_SW_PULLUP 0x0F
#define IS31FL3737_FUNCTION_REG_CS_PULLDOWN 0x10
#define IS31FL3737_FUNCTION_REG_RESET 0x11

#define IS31FL3737_REG_COMMAND_WRITE_LOCK 0xFE
#define IS31FL3737_COMMAND_WRITE_LOCK_MAGIC 0xC5

#define IS31FL3737_I2C_ADDRESS_GND 0x50
#define IS31FL3737_I2C_ADDRESS_SCL 0x55
#define IS31FL3737_I2C_ADDRESS_SDA 0x5A
#define IS31FL3737_I2C_ADDRESS_VCC 0x5F

#if defined(LED_MATRIX_IS31FL3737)
#    define IS31FL3737_LED_COUNT LED_MATRIX_LED_COUNT
#endif

#if defined(IS31FL3737_I2C_ADDRESS_4)
#    define IS31FL3737_DRIVER_COUNT 4
#elif defined(IS31FL3737_I2C_ADDRESS_3)
#    define IS31FL3737_DRIVER_COUNT 3
#elif defined(IS31FL3737_I2C_ADDRESS_2)
#    define IS31FL3737_DRIVER_COUNT 2
#elif defined(IS31FL3737_I2C_ADDRESS_1)
#    define IS31FL3737_DRIVER_COUNT 1
#endif

typedef struct is31fl3737_led_t {
    uint8_t driver : 2;
    uint8_t v;
} PACKED is31fl3737_led_t;

extern const is31fl3737_led_t PROGMEM g_is31fl3737_leds[IS31FL3737_LED_COUNT];

void is31fl3737_init_drivers(void);
void is31fl3737_init(uint8_t addr);
void is31fl3737_write_register(uint8_t addr, uint8_t reg, uint8_t data);
void is31fl3737_select_page(uint8_t addr, uint8_t page);
void is31fl3737_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer);

void is31fl3737_set_value(int index, uint8_t value);
void is31fl3737_set_value_all(uint8_t value);

void is31fl3737_set_led_control_register(uint8_t index, bool value);

// This should not be called from an interrupt
// (eg. from a timer interrupt).
// Call this while idle (in between matrix scans).
// If the buffer is dirty, it will update the driver with the buffer.
void is31fl3737_update_pwm_buffers(uint8_t addr, uint8_t index);
void is31fl3737_update_led_control_registers(uint8_t addr, uint8_t index);

void is31fl3737_flush(void);

#define IS31FL3737_PDR_0_OHM 0b000   // No pull-down resistor
#define IS31FL3737_PDR_0K5_OHM 0b001 // 0.5 kOhm resistor
#define IS31FL3737_PDR_1K_OHM 0b010  // 1 kOhm resistor
#define IS31FL3737_PDR_2K_OHM 0b011  // 2 kOhm resistor
#define IS31FL3737_PDR_4K_OHM 0b100  // 4 kOhm resistor
#define IS31FL3737_PDR_8K_OHM 0b101  // 8 kOhm resistor
#define IS31FL3737_PDR_16K_OHM 0b110 // 16 kOhm resistor
#define IS31FL3737_PDR_32K_OHM 0b111 // 32 kOhm resistor

#define IS31FL3737_PUR_0_OHM 0b000   // No pull-up resistor
#define IS31FL3737_PUR_0K5_OHM 0b001 // 0.5 kOhm resistor
#define IS31FL3737_PUR_1K_OHM 0b010  // 1 kOhm resistor
#define IS31FL3737_PUR_2K_OHM 0b011  // 2 kOhm resistor
#define IS31FL3737_PUR_4K_OHM 0b100  // 4 kOhm resistor
#define IS31FL3737_PUR_8K_OHM 0b101  // 8 kOhm resistor
#define IS31FL3737_PUR_16K_OHM 0b110 // 16 kOhm resistor
#define IS31FL3737_PUR_32K_OHM 0b111 // 32 kOhm resistor

#define IS31FL3737_PWM_FREQUENCY_8K4_HZ 0b000
#define IS31FL3737_PWM_FREQUENCY_4K2_HZ 0b001
#define IS31FL3737_PWM_FREQUENCY_26K7_HZ 0b010
#define IS31FL3737_PWM_FREQUENCY_2K1_HZ 0b011
#define IS31FL3737_PWM_FREQUENCY_1K05_HZ 0b100

#define A_1 0x00
#define A_2 0x01
#define A_3 0x02
#define A_4 0x03
#define A_5 0x04
#define A_6 0x05
#define A_7 0x08
#define A_8 0x09
#define A_9 0x0A
#define A_10 0x0B
#define A_11 0x0C
#define A_12 0x0D

#define B_1 0x10
#define B_2 0x11
#define B_3 0x12
#define B_4 0x13
#define B_5 0x14
#define B_6 0x15
#define B_7 0x18
#define B_8 0x19
#define B_9 0x1A
#define B_10 0x1B
#define B_11 0x1C
#define B_12 0x1D

#define C_1 0x20
#define C_2 0x21
#define C_3 0x22
#define C_4 0x23
#define C_5 0x24
#define C_6 0x25
#define C_7 0x28
#define C_8 0x29
#define C_9 0x2A
#define C_10 0x2B
#define C_11 0x2C
#define C_12 0x2D

#define D_1 0x30
#define D_2 0x31
#define D_3 0x32
#define D_4 0x33
#define D_5 0x34
#define D_6 0x35
#define D_7 0x38
#define D_8 0x39
#define D_9 0x3A
#define D_10 0x3B
#define D_11 0x3C
#define D_12 0x3D

#define E_1 0x40
#define E_2 0x41
#define E_3 0x42
#define E_4 0x43
#define E_5 0x44
#define E_6 0x45
#define E_7 0x48
#define E_8 0x49
#define E_9 0x4A
#define E_10 0x4B
#define E_11 0x4C
#define E_12 0x4D

#define F_1 0x50
#define F_2 0x51
#define F_3 0x52
#define F_4 0x53
#define F_5 0x54
#define F_6 0x55
#define F_7 0x58
#define F_8 0x59
#define F_9 0x5A
#define F_10 0x5B
#define F_11 0x5C
#define F_12 0x5D

#define G_1 0x60
#define G_2 0x61
#define G_3 0x62
#define G_4 0x63
#define G_5 0x64
#define G_6 0x65
#define G_7 0x68
#define G_8 0x69
#define G_9 0x6A
#define G_10 0x6B
#define G_11 0x6C
#define G_12 0x6D

#define H_1 0x70
#define H_2 0x71
#define H_3 0x72
#define H_4 0x73
#define H_5 0x74
#define H_6 0x75
#define H_7 0x78
#define H_8 0x79
#define H_9 0x7A
#define H_10 0x7B
#define H_11 0x7C
#define H_12 0x7D

#define I_1 0x80
#define I_2 0x81
#define I_3 0x82
#define I_4 0x83
#define I_5 0x84
#define I_6 0x85
#define I_7 0x88
#define I_8 0x89
#define I_9 0x8A
#define I_10 0x8B
#define I_11 0x8C
#define I_12 0x8D

#define J_1 0x90
#define J_2 0x91
#define J_3 0x92
#define J_4 0x93
#define J_5 0x94
#define J_6 0x95
#define J_7 0x98
#define J_8 0x99
#define J_9 0x9A
#define J_10 0x9B
#define J_11 0x9C
#define J_12 0x9D

#define K_1 0xA0
#define K_2 0xA1
#define K_3 0xA2
#define K_4 0xA3
#define K_5 0xA4
#define K_6 0xA5
#define K_7 0xA8
#define K_8 0xA9
#define K_9 0xAA
#define K_10 0xAB
#define K_11 0xAC
#define K_12 0xAD

#define L_1 0xB0
#define L_2 0xB1
#define L_3 0xB2
#define L_4 0xB3
#define L_5 0xB4
#define L_6 0xB5
#define L_7 0xB8
#define L_8 0xB9
#define L_9 0xBA
#define L_10 0xBB
#define L_11 0xBC
#define L_12 0xBD