/* Copyright 2024 HorrorTroll <https://github.com/HorrorTroll>
 * Copyright 2024 Harrison Chan (Xelus)
 * Copyright 2024 Dimitris Mantzouranis <d3xter93@gmail.com>
 *
 * 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"

#define IS31FL3729_REG_PWM 0x01
#define IS31FL3729_REG_SCALING 0x90
#define IS31FL3729_REG_CONFIGURATION 0xA0
#define IS31FL3729_REG_GLOBAL_CURRENT 0xA1
#define IS31FL3729_REG_PULLDOWNUP 0xB0
#define IS31FL3729_REG_SPREAD_SPECTRUM 0xB1
#define IS31FL3729_REG_PWM_FREQUENCY 0xB2
#define IS31FL3729_REG_RESET 0xCF

#define IS31FL3729_I2C_ADDRESS_GND 0x34
#define IS31FL3729_I2C_ADDRESS_SCL 0x35
#define IS31FL3729_I2C_ADDRESS_SDA 0x36
#define IS31FL3729_I2C_ADDRESS_VCC 0x37

#if defined(RGB_MATRIX_IS31FL3729)
#    define IS31FL3729_LED_COUNT RGB_MATRIX_LED_COUNT
#endif

#if defined(IS31FL3729_I2C_ADDRESS_4)
#    define IS31FL3729_DRIVER_COUNT 4
#elif defined(IS31FL3729_I2C_ADDRESS_3)
#    define IS31FL3729_DRIVER_COUNT 3
#elif defined(IS31FL3729_I2C_ADDRESS_2)
#    define IS31FL3729_DRIVER_COUNT 2
#elif defined(IS31FL3729_I2C_ADDRESS_1)
#    define IS31FL3729_DRIVER_COUNT 1
#endif

typedef struct is31fl3729_led_t {
    uint8_t driver : 2;
    uint8_t r;
    uint8_t g;
    uint8_t b;
} PACKED is31fl3729_led_t;

extern const is31fl3729_led_t PROGMEM g_is31fl3729_leds[IS31FL3729_LED_COUNT];

void is31fl3729_init_drivers(void);
void is31fl3729_init(uint8_t index);
void is31fl3729_write_register(uint8_t index, uint8_t reg, uint8_t data);

void is31fl3729_set_color(int index, uint8_t red, uint8_t green, uint8_t blue);
void is31fl3729_set_color_all(uint8_t red, uint8_t green, uint8_t blue);

void is31fl3729_set_scaling_register(uint8_t index, uint8_t red, uint8_t green, uint8_t blue);

// 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 is31fl3729_update_pwm_buffers(uint8_t index);
void is31fl3729_update_scaling_registers(uint8_t index);

void is31fl3729_flush(void);

#define IS31FL3729_SW_PULLDOWN_0_OHM 0b000
#define IS31FL3729_SW_PULLDOWN_0K5_OHM_SW_OFF 0b001
#define IS31FL3729_SW_PULLDOWN_1K_OHM_SW_OFF 0b010
#define IS31FL3729_SW_PULLDOWN_2K_OHM_SW_OFF 0b011
#define IS31FL3729_SW_PULLDOWN_1K_OHM 0b100
#define IS31FL3729_SW_PULLDOWN_2K_OHM 0b101
#define IS31FL3729_SW_PULLDOWN_4K_OHM 0b110
#define IS31FL3729_SW_PULLDOWN_8K_OHM 0b111

#define IS31FL3729_CS_PULLUP_0_OHM 0b000
#define IS31FL3729_CS_PULLUP_0K5_OHM_CS_OFF 0b001
#define IS31FL3729_CS_PULLUP_1K_OHM_CS_OFF 0b010
#define IS31FL3729_CS_PULLUP_2K_OHM_CS_OFF 0b011
#define IS31FL3729_CS_PULLUP_1K_OHM 0b100
#define IS31FL3729_CS_PULLUP_2K_OHM 0b101
#define IS31FL3729_CS_PULLUP_4K_OHM 0b110
#define IS31FL3729_CS_PULLUP_8K_OHM 0b111

#define IS31FL3729_SPREAD_SPECTRUM_DISABLE 0b0
#define IS31FL3729_SPREAD_SPECTRUM_ENABLE 0b1

#define IS31FL3729_SPREAD_SPECTRUM_RANGE_5_PERCENT 0b00
#define IS31FL3729_SPREAD_SPECTRUM_RANGE_15_PERCENT 0b01
#define IS31FL3729_SPREAD_SPECTRUM_RANGE_24_PERCENT 0b10
#define IS31FL3729_SPREAD_SPECTRUM_RANGE_34_PERCENT 0b11

#define IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME_1980_US 0b00
#define IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME_1200_US 0b01
#define IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME_820_US 0b10
#define IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME_660_US 0b11

#define IS31FL3729_PWM_FREQUENCY_55K_HZ 0b000
#define IS31FL3729_PWM_FREQUENCY_32K_HZ 0b001
#define IS31FL3729_PWM_FREQUENCY_4K_HZ 0b010
#define IS31FL3729_PWM_FREQUENCY_2K_HZ 0b011
#define IS31FL3729_PWM_FREQUENCY_1K_HZ 0b100
#define IS31FL3729_PWM_FREQUENCY_500_HZ 0b101
#define IS31FL3729_PWM_FREQUENCY_250_HZ 0b110
#define IS31FL3729_PWM_FREQUENCY_80K_HZ 0b111

#define IS31FL3729_CONFIG_SWS_15_9 0x01 // 15 CS x 9 SW matrix
#define IS31FL3729_CONFIG_SWS_16_8 0x11 // 16 CS x 8 SW matrix
#define IS31FL3729_CONFIG_SWS_16_7 0x21 // 16 CS x 7 SW matrix
#define IS31FL3729_CONFIG_SWS_16_6 0x31 // 16 CS x 6 SW matrix
#define IS31FL3729_CONFIG_SWS_16_5 0x41 // 16 CS x 5 SW matrix
#define IS31FL3729_CONFIG_SWS_16_4 0x51 // 16 CS x 4 SW matrix
#define IS31FL3729_CONFIG_SWS_16_3 0x61 // 16 CS x 3 SW matrix
#define IS31FL3729_CONFIG_SWS_16_2 0x71 // 16 CS x 2 SW matrix

#define SW1_CS1 0x00
#define SW1_CS2 0x01
#define SW1_CS3 0x02
#define SW1_CS4 0x03
#define SW1_CS5 0x04
#define SW1_CS6 0x05
#define SW1_CS7 0x06
#define SW1_CS8 0x07
#define SW1_CS9 0x08
#define SW1_CS10 0x09
#define SW1_CS11 0x0A
#define SW1_CS12 0x0B
#define SW1_CS13 0x0C
#define SW1_CS14 0x0D
#define SW1_CS15 0x0E
#define SW1_CS16 0x0F

#define SW2_CS1 0x10
#define SW2_CS2 0x11
#define SW2_CS3 0x12
#define SW2_CS4 0x13
#define SW2_CS5 0x14
#define SW2_CS6 0x15
#define SW2_CS7 0x16
#define SW2_CS8 0x17
#define SW2_CS9 0x18
#define SW2_CS10 0x19
#define SW2_CS11 0x1A
#define SW2_CS12 0x1B
#define SW2_CS13 0x1C
#define SW2_CS14 0x1D
#define SW2_CS15 0x1E
#define SW2_CS16 0x1F

#define SW3_CS1 0x20
#define SW3_CS2 0x21
#define SW3_CS3 0x22
#define SW3_CS4 0x23
#define SW3_CS5 0x24
#define SW3_CS6 0x25
#define SW3_CS7 0x26
#define SW3_CS8 0x27
#define SW3_CS9 0x28
#define SW3_CS10 0x29
#define SW3_CS11 0x2A
#define SW3_CS12 0x2B
#define SW3_CS13 0x2C
#define SW3_CS14 0x2D
#define SW3_CS15 0x2E
#define SW3_CS16 0x2F

#define SW4_CS1 0x30
#define SW4_CS2 0x31
#define SW4_CS3 0x32
#define SW4_CS4 0x33
#define SW4_CS5 0x34
#define SW4_CS6 0x35
#define SW4_CS7 0x36
#define SW4_CS8 0x37
#define SW4_CS9 0x38
#define SW4_CS10 0x39
#define SW4_CS11 0x3A
#define SW4_CS12 0x3B
#define SW4_CS13 0x3C
#define SW4_CS14 0x3D
#define SW4_CS15 0x3E
#define SW4_CS16 0x3F

#define SW5_CS1 0x40
#define SW5_CS2 0x41
#define SW5_CS3 0x42
#define SW5_CS4 0x43
#define SW5_CS5 0x44
#define SW5_CS6 0x45
#define SW5_CS7 0x46
#define SW5_CS8 0x47
#define SW5_CS9 0x48
#define SW5_CS10 0x49
#define SW5_CS11 0x4A
#define SW5_CS12 0x4B
#define SW5_CS13 0x4C
#define SW5_CS14 0x4D
#define SW5_CS15 0x4E
#define SW5_CS16 0x4F

#define SW6_CS1 0x50
#define SW6_CS2 0x51
#define SW6_CS3 0x52
#define SW6_CS4 0x53
#define SW6_CS5 0x54
#define SW6_CS6 0x55
#define SW6_CS7 0x56
#define SW6_CS8 0x57
#define SW6_CS9 0x58
#define SW6_CS10 0x59
#define SW6_CS11 0x5A
#define SW6_CS12 0x5B
#define SW6_CS13 0x5C
#define SW6_CS14 0x5D
#define SW6_CS15 0x5E
#define SW6_CS16 0x5F

#define SW7_CS1 0x60
#define SW7_CS2 0x61
#define SW7_CS3 0x62
#define SW7_CS4 0x63
#define SW7_CS5 0x64
#define SW7_CS6 0x65
#define SW7_CS7 0x66
#define SW7_CS8 0x67
#define SW7_CS9 0x68
#define SW7_CS10 0x69
#define SW7_CS11 0x6A
#define SW7_CS12 0x6B
#define SW7_CS13 0x6C
#define SW7_CS14 0x6D
#define SW7_CS15 0x6E
#define SW7_CS16 0x6F

#define SW8_CS1 0x70
#define SW8_CS2 0x71
#define SW8_CS3 0x72
#define SW8_CS4 0x73
#define SW8_CS5 0x74
#define SW8_CS6 0x75
#define SW8_CS7 0x76
#define SW8_CS8 0x77
#define SW8_CS9 0x78
#define SW8_CS10 0x79
#define SW8_CS11 0x7A
#define SW8_CS12 0x7B
#define SW8_CS13 0x7C
#define SW8_CS14 0x7D
#define SW8_CS15 0x7E
#define SW8_CS16 0x7F

#define SW9_CS1 0x80
#define SW9_CS2 0x81
#define SW9_CS3 0x82
#define SW9_CS4 0x83
#define SW9_CS5 0x84
#define SW9_CS6 0x85
#define SW9_CS7 0x86
#define SW9_CS8 0x87
#define SW9_CS9 0x88
#define SW9_CS10 0x89
#define SW9_CS11 0x8A
#define SW9_CS12 0x8B
#define SW9_CS13 0x8C
#define SW9_CS14 0x8D
#define SW9_CS15 0x8E
