123 lines
4 KiB
C++
123 lines
4 KiB
C++
/*-----------------------------------------*\
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| RGBFusion2SMBusController.cpp |
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| Driver for Gigabyte Aorus RGB Fusion 2 |
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| SMBus lighting controller |
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| Adam Honse (CalcProgrammer1) 3/12/2020 |
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| Matt Harper 5/5/2020 |
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\*-----------------------------------------*/
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#include "RGBFusion2SMBusController.h"
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#include <cstring>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef DEBUG
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#include <iostream>
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#include <iomanip>
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#endif
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RGBFusion2SMBusController::RGBFusion2SMBusController(i2c_smbus_interface* bus, rgb_fusion_dev_id dev)
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{
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this->bus = bus;
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this->dev = dev;
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memset(led_data, 0, 10*16);
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led_count = 10; // Protocol supports 10 'slots'
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}
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unsigned int RGBFusion2SMBusController::GetLEDCount()
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{
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return(led_count);
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}
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std::string RGBFusion2SMBusController::GetDeviceLocation()
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{
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std::string return_string(bus->device_name);
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char addr[5];
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snprintf(addr, 5, "0x%02X", dev);
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return_string.append(", address ");
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return_string.append(addr);
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return(return_string);
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}
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void RGBFusion2SMBusController::Apply()
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{
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/*
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* Given that reading the existing state from the device is not yet possible,
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* unfortunately we may overwrite existing device states if the state transition did
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* not occur within in the same OpenRGB instance.
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* Current behavior is non-ideal but the best we have.
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*/
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for (int i = 0; i < 5; i++) {
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#ifdef DEBUG
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std::cout << "0x" << std::hex << (int)RGB_FUSION_2_LED_START_ADDR + 2*i << "\t";
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for (int j = 0; j < 2; j++) {
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for (int k = 0; k < 16; k++) {
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std::cout << std::setw(2) << std::setfill('0') << std::hex << (int)led_data[2*i+j][k] << " ";
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}
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}
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std::cout << std::endl;
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#endif
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bus->i2c_smbus_write_block_data(RGB_FUSION_2_SMBUS_ADDR,
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RGB_FUSION_2_LED_START_ADDR + 2*i,
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32, // Writes occur in 32 byte blocks
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led_data[i*2]);
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}
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// Protocol expects terminating sequence 0x01ff written to register 0x17
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bus->i2c_smbus_write_word_data(RGB_FUSION_2_SMBUS_ADDR,
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RGB_FUSION_2_APPLY_ADDR,
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RGB_FUSION_2_ACTION_APPLY);
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}
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void RGBFusion2SMBusController::SetLEDEffect
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(
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unsigned int led,
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int mode,
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unsigned int speed,
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unsigned char red,
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unsigned char green,
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unsigned char blue
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)
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{
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led_data[led][RGB_FUSION_2_IDX_MODE] = mode;
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led_data[led][RGB_FUSION_2_IDX_RED] = red;
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led_data[led][RGB_FUSION_2_IDX_GREEN] = green;
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led_data[led][RGB_FUSION_2_IDX_BLUE] = blue;
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led_data[led][RGB_FUSION_2_IDX_BRIGHTNESS] = 0x64; // TODO - is this *really* the max value?
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// TODO - more thorough understanding could lead to better implementation
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led_data[led][RGB_FUSION_2_TIMER_1_LSB] = 0x20 * speed;
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led_data[led][RGB_FUSION_2_TIMER_1_MSB] = 0x03 * speed;
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led_data[led][RGB_FUSION_2_TIMER_2_LSB] = 0x20 * speed;
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led_data[led][RGB_FUSION_2_TIMER_2_MSB] = 0x03 * speed;
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// Here be dragons
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// Purpose of each index is not well understood
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// Existing values taken from Windows dump
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// TODO - more thorough understanding could lead to better implementation
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if (mode == RGB_FUSION_2_MODE_FLASHING) {
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led_data[led][0xc] = 0xd0; // ???
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led_data[led][0xd] = 0x07; // ???
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led_data[led][0xe] = 0x01 * speed; // Controls number of flashes
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// Following four fields appear to both important, and magic
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// No other values appear to work, but it's probably worth further investigation
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led_data[led][RGB_FUSION_2_TIMER_1_LSB] = 0x64;
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led_data[led][RGB_FUSION_2_TIMER_1_MSB] = 0;
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led_data[led][RGB_FUSION_2_TIMER_2_LSB] = 0xc8; // 0x64 * 2 = 0xc8 - Potentially significant?
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led_data[led][RGB_FUSION_2_TIMER_2_MSB] = 0;
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}
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if (mode == RGB_FUSION_2_MODE_COLOR_CYCLE) {
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led_data[led][0xc] = 0xd0; // ???
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led_data[led][0xd] = 0x07; // ???
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led_data[led][0xe] = 0x07; // ???
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}
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// End dragons. Well, probably.
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}
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