Atmosphere/stratosphere/boot/source/i2c/driver/impl/i2c_registers.hpp
2019-06-21 20:25:27 -07:00

129 lines
4.8 KiB
C++

/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 <switch.h>
#include <stratosphere.hpp>
#include "i2c_driver_types.hpp"
namespace sts::i2c::driver::impl {
struct Registers {
volatile u32 I2C_I2C_CNFG_0;
volatile u32 I2C_I2C_CMD_ADDR0_0;
volatile u32 I2C_I2C_CMD_ADDR1_0;
volatile u32 I2C_I2C_CMD_DATA1_0;
volatile u32 I2C_I2C_CMD_DATA2_0;
volatile u32 _0x14;
volatile u32 _0x18;
volatile u32 I2C_I2C_STATUS_0;
volatile u32 I2C_I2C_SL_CNFG_0;
volatile u32 I2C_I2C_SL_RCVD_0;
volatile u32 I2C_I2C_SL_STATUS_0;
volatile u32 I2C_I2C_SL_ADDR1_0;
volatile u32 I2C_I2C_SL_ADDR2_0;
volatile u32 I2C_I2C_TLOW_SEXT_0;
volatile u32 _0x38;
volatile u32 I2C_I2C_SL_DELAY_COUNT_0;
volatile u32 I2C_I2C_SL_INT_MASK_0;
volatile u32 I2C_I2C_SL_INT_SOURCE_0;
volatile u32 I2C_I2C_SL_INT_SET_0;
volatile u32 _0x4C;
volatile u32 I2C_I2C_TX_PACKET_FIFO_0;
volatile u32 I2C_I2C_RX_FIFO_0;
volatile u32 I2C_PACKET_TRANSFER_STATUS_0;
volatile u32 I2C_FIFO_CONTROL_0;
volatile u32 I2C_FIFO_STATUS_0;
volatile u32 I2C_INTERRUPT_MASK_REGISTER_0;
volatile u32 I2C_INTERRUPT_STATUS_REGISTER_0;
volatile u32 I2C_I2C_CLK_DIVISOR_REGISTER_0;
volatile u32 I2C_I2C_INTERRUPT_SOURCE_REGISTER_0;
volatile u32 I2C_I2C_INTERRUPT_SET_REGISTER_0;
volatile u32 I2C_I2C_SLV_TX_PACKET_FIFO_0;
volatile u32 I2C_I2C_SLV_RX_FIFO_0;
volatile u32 I2C_I2C_SLV_PACKET_STATUS_0;
volatile u32 I2C_I2C_BUS_CLEAR_CONFIG_0;
volatile u32 I2C_I2C_BUS_CLEAR_STATUS_0;
volatile u32 I2C_I2C_CONFIG_LOAD_0;
volatile u32 _0x90;
volatile u32 I2C_I2C_INTERFACE_TIMING_0_0;
volatile u32 I2C_I2C_INTERFACE_TIMING_1_0;
volatile u32 I2C_I2C_HS_INTERFACE_TIMING_0_0;
volatile u32 I2C_I2C_HS_INTERFACE_TIMING_1_0;
};
struct ClkRstRegisters {
public:
volatile u32 *clk_src_reg;
volatile u32 *clk_en_reg;
volatile u32 *rst_reg;
u32 mask;
public:
void SetBus(Bus bus) {
static constexpr uintptr_t s_clk_src_offsets[ConvertToIndex(Bus::Count)] = {
0x124, 0x198, 0x1b8, 0x3c4, 0x128, 0x65c
};
static constexpr uintptr_t s_clk_en_offsets[ConvertToIndex(Bus::Count)] = {
0x010, 0x014, 0x018, 0x360, 0x014, 0x280
};
static constexpr uintptr_t s_rst_offsets[ConvertToIndex(Bus::Count)] = {
0x004, 0x008, 0x00c, 0x358, 0x008, 0x28c
};
static constexpr size_t s_bit_shifts[ConvertToIndex(Bus::Count)] = {
12, 22, 3, 7, 15, 6
};
const uintptr_t registers = GetIoMapping(0x60006000ul, 0x1000);
const size_t idx = ConvertToIndex(bus);
this->clk_src_reg = reinterpret_cast<volatile u32 *>(registers + s_clk_src_offsets[idx]);
this->clk_en_reg = reinterpret_cast<volatile u32 *>(registers + s_clk_en_offsets[idx]);
this->rst_reg = reinterpret_cast<volatile u32 *>(registers + s_rst_offsets[idx]);
this->mask = (1u << s_bit_shifts[idx]);
}
};
inline Registers *GetRegisters(Bus bus) {
static constexpr uintptr_t s_offsets[ConvertToIndex(Bus::Count)] = {
0x0000, 0x0400, 0x0500, 0x0700, 0x1000, 0x1100
};
const uintptr_t registers = GetIoMapping(0x7000c000ul, 0x2000) + s_offsets[ConvertToIndex(bus)];
return reinterpret_cast<Registers *>(registers);
}
inline void WriteRegister(volatile u32 *reg, u32 val) {
*reg = val;
}
inline u32 ReadRegister(volatile u32 *reg) {
u32 val = *reg;
return val;
}
inline void SetRegisterBits(volatile u32 *reg, u32 mask) {
*reg |= mask;
}
inline void ClearRegisterBits(volatile u32 *reg, u32 mask) {
*reg &= mask;
}
inline void ReadWriteRegisterBits(volatile u32 *reg, u32 val, u32 mask) {
*reg = (*reg & (~mask)) | (val & mask);
}
}