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boot: add rgltr/clkrst overrides, skel I2cBusAccessor

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Michael Scire 2020-10-31 16:34:06 -07:00 • committed by SciresM
parent f4e499fed9
commit e5bf06254a
39 changed files with 1061 additions and 1842 deletions
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149
stratosphere/boot/source/api_overrides/clkrst_api_for_boot.board.nintendo_nx.cpp Normal file
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/*
* Copyright (c) 2018-2020 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/>.
*/
#include <stratosphere.hpp>
namespace ams::clkrst {
namespace {
constexpr inline dd::PhysicalAddress ClkRstRegistersPhysicalAddress = 0x60006000;
constexpr inline size_t ClkRstRegistersSize = 0x1000;
uintptr_t g_clkrst_registers = dd::QueryIoMapping(ClkRstRegistersPhysicalAddress, ClkRstRegistersSize);
struct ClkRstDefinition {
u32 clk_src_ofs;
u32 clk_en_ofs;
u32 rst_ofs;
u32 clk_en_index;
u32 rst_index;
u8 clk_src;
u8 clk_divisor;
};
constexpr inline const ClkRstDefinition Definitions[] = {
{ CLK_RST_CONTROLLER_CLK_SOURCE_I2C1, CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_CONTROLLER_CLK_ENB_I2C1_INDEX, CLK_RST_CONTROLLER_RST_I2C1_INDEX, 0x00 /* PLLP_OUT0 */, 0x04 },
{ CLK_RST_CONTROLLER_CLK_SOURCE_I2C2, CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_CONTROLLER_CLK_ENB_I2C2_INDEX, CLK_RST_CONTROLLER_RST_I2C2_INDEX, 0x00 /* PLLP_OUT0 */, 0x04 },
{ CLK_RST_CONTROLLER_CLK_SOURCE_I2C3, CLK_RST_CONTROLLER_CLK_OUT_ENB_U, CLK_RST_CONTROLLER_RST_DEVICES_U, CLK_RST_CONTROLLER_CLK_ENB_I2C3_INDEX, CLK_RST_CONTROLLER_RST_I2C3_INDEX, 0x00 /* PLLP_OUT0 */, 0x04 },
{ CLK_RST_CONTROLLER_CLK_SOURCE_I2C4, CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_CONTROLLER_RST_DEVICES_V, CLK_RST_CONTROLLER_CLK_ENB_I2C4_INDEX, CLK_RST_CONTROLLER_RST_I2C4_INDEX, 0x00 /* PLLP_OUT0 */, 0x04 },
{ CLK_RST_CONTROLLER_CLK_SOURCE_I2C5, CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_CONTROLLER_CLK_ENB_I2C5_INDEX, CLK_RST_CONTROLLER_RST_I2C5_INDEX, 0x00 /* PLLP_OUT0 */, 0x04 },
{ CLK_RST_CONTROLLER_CLK_SOURCE_I2C6, CLK_RST_CONTROLLER_CLK_OUT_ENB_X, CLK_RST_CONTROLLER_RST_DEVICES_X, CLK_RST_CONTROLLER_CLK_ENB_I2C6_INDEX, CLK_RST_CONTROLLER_RST_I2C6_INDEX, 0x00 /* PLLP_OUT0 */, 0x04 },
{ CLK_RST_CONTROLLER_CLK_SOURCE_PWM, CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_CONTROLLER_CLK_ENB_PWM_INDEX, CLK_RST_CONTROLLER_RST_PWM_INDEX, 0x00 /* PLLP_OUT0 */, 0x10 },
};
constexpr inline const struct {
const ClkRstDefinition *definition;
DeviceCode device_code;
} ClkRstDefinitionMap[] = {
{ std::addressof(Definitions[0]), i2c::DeviceCode_I2c1 },
{ std::addressof(Definitions[1]), i2c::DeviceCode_I2c2 },
{ std::addressof(Definitions[2]), i2c::DeviceCode_I2c3 },
{ std::addressof(Definitions[3]), i2c::DeviceCode_I2c4 },
{ std::addressof(Definitions[4]), i2c::DeviceCode_I2c5 },
{ std::addressof(Definitions[5]), i2c::DeviceCode_I2c6 },
{ std::addressof(Definitions[6]), pwm::DeviceCode_LcdBacklight },
};
ALWAYS_INLINE const ClkRstDefinition *GetDefinition(DeviceCode device_code) {
const ClkRstDefinition *def = nullptr;
for (const auto &entry : ClkRstDefinitionMap) {
if (entry.device_code == device_code) {
def = entry.definition;
break;
}
}
AMS_ABORT_UNLESS(def != nullptr);
return def;
}
ALWAYS_INLINE const ClkRstDefinition &GetDefinition(ClkRstSession *session) {
const ClkRstDefinition *def = nullptr;
for (const auto &entry : ClkRstDefinitionMap) {
if (session->_session == entry.definition) {
def = entry.definition;
break;
}
}
AMS_ABORT_UNLESS(def != nullptr);
return *def;
}
}
void Initialize() {
/* ... */
}
void Finalize() {
/* ... */
}
Result OpenSession(ClkRstSession *out, DeviceCode device_code) {
/* Get the relevant definition. */
out->_session = const_cast<ClkRstDefinition *>(GetDefinition(device_code));
return ResultSuccess();
}
void CloseSession(ClkRstSession *session) {
/* Clear the session. */
session->_session = nullptr;
}
void SetResetAsserted(ClkRstSession *session) {
/* Get the definition. */
const auto &def = GetDefinition(session);
/* Assert reset. */
reg::ReadWrite(g_clkrst_registers + def.rst_ofs, 1u << def.rst_index, 1u << def.rst_index);
}
void SetResetDeasserted(ClkRstSession *session) {
/* Get the definition. */
const auto &def = GetDefinition(session);
/* Clear reset. */
reg::ReadWrite(g_clkrst_registers + def.rst_ofs, 0, 1u << def.rst_index);
}
void SetClockRate(ClkRstSession *session, u32 hz) {
/* Get the definition. */
const auto &def = GetDefinition(session);
/* Enable clock. */
reg::ReadWrite(g_clkrst_registers + def.clk_en_ofs, 1u << def.clk_en_index, 1u << def.clk_en_index);
/* Set the clock divisor. */
reg::ReadWrite(g_clkrst_registers + def.clk_src_ofs, CLK_RST_REG_BITS_VALUE(CLK_SOURCE_CLK_DIVISOR, def.clk_divisor));
/* Wait for 2us for clock setting to take. */
os::SleepThread(TimeSpan::FromMicroSeconds(2));
/* Set the clock source. */
reg::ReadWrite(g_clkrst_registers + def.clk_src_ofs, CLK_RST_REG_BITS_VALUE(CLK_SOURCE_CLK_SOURCE, def.clk_src));
/* Wait for 2us for clock setting to take. */
os::SleepThread(TimeSpan::FromMicroSeconds(2));
}
void SetClockDisabled(ClkRstSession *session) {
AMS_ABORT("SetClockDisabled not implemented for boot system module");
}
}

52
stratosphere/boot/source/api_overrides/regulator_api_for_boot.cpp Normal file
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/*
* Copyright (c) 2018-2020 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/>.
*/
#include <stratosphere.hpp>
namespace ams::regulator {
void Initialize() {
/* ... */
}
void Finalize() {
/* ... */
}
Result OpenSession(RegulatorSession *out, DeviceCode device_code) {
AMS_UNUSED(out, device_code);
return ResultSuccess();
}
void CloseSession(RegulatorSession *session) {
AMS_UNUSED(session);
}
bool GetVoltageEnabled(RegulatorSession *session) {
AMS_UNUSED(session);
return true;
}
Result SetVoltageEnabled(RegulatorSession *session) {
AMS_UNUSED(session);
return ResultSuccess();
}
Result SetVoltageValue(RegulatorSession *session, u32 micro_volts) {
AMS_UNUSED(session, micro_volts);
return ResultSuccess();
}
}

74
stratosphere/boot/source/boot_pcv.cpp
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/*
* Copyright (c) 2018-2020 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/>.
*/
#include <stratosphere.hpp>
#include "i2c/i2c_types.hpp"
#include "i2c/driver/impl/i2c_pcv.hpp"
#include "i2c/driver/impl/i2c_registers.hpp"
using namespace ams::i2c::driver::impl;
namespace ams::pcv {
void Initialize() {
/* Don't do anything. */
}
void Finalize() {
/* Don't do anything. */
}
Result SetClockRate(PcvModule module, u32 hz) {
/* Get clock/reset registers. */
ClkRstRegisters regs;
regs.SetBus(ConvertFromPcvModule(module));
/* Set clock enabled/source. */
reg::SetBits(regs.clk_en_reg, regs.mask);
reg::ReadWrite(regs.clk_src_reg, 0x4, 0xFF);
svcSleepThread(1000ul);
reg::ReadWrite(regs.clk_src_reg, 0, 0xE0000000);
svcSleepThread(2000ul);
return ResultSuccess();
}
Result SetClockEnabled(PcvModule module, bool enabled) {
return ResultSuccess();
}
Result SetVoltageEnabled(u32 domain, bool enabled) {
return ResultSuccess();
}
Result SetVoltageValue(u32 domain, u32 voltage) {
return ResultSuccess();
}
Result SetReset(PcvModule module, bool reset) {
/* Get clock/reset registers. */
ClkRstRegisters regs;
regs.SetBus(ConvertFromPcvModule(module));
/* Set/clear reset. */
if (reset) {
reg::SetBits(regs.rst_reg, regs.mask);
} else {
reg::ClearBits(regs.rst_reg, regs.mask);
}
return ResultSuccess();
}
}

175
stratosphere/boot/source/i2c/driver/i2c_api.cpp
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/*
* Copyright (c) 2018-2020 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/>.
*/
#include <stratosphere.hpp>
#include "i2c_api.hpp"
#include "impl/i2c_resource_manager.hpp"
namespace ams::i2c::driver {
namespace {
/* For convenience. */
using CommandHandler = Result (*)(const u8 **cur_cmd, u8 **cur_dst, Session& session);
/* Command handlers. */
Result SendHandler(const u8 **cur_cmd, u8 **cur_dst, Session& session) {
I2cTransactionOption option = static_cast<I2cTransactionOption>(
(((**cur_cmd) & (1 << 6)) ? I2cTransactionOption_Start : 0) | (((**cur_cmd) & (1 << 7)) ? I2cTransactionOption_Stop : 0)
);
(*cur_cmd)++;
size_t num_bytes = (**cur_cmd);
(*cur_cmd)++;
R_TRY(Send(session, *cur_cmd, num_bytes, option));
(*cur_cmd) += num_bytes;
return ResultSuccess();
}
Result ReceiveHandler(const u8 **cur_cmd, u8 **cur_dst, Session& session) {
I2cTransactionOption option = static_cast<I2cTransactionOption>(
(((**cur_cmd) & (1 << 6)) ? I2cTransactionOption_Start : 0) | (((**cur_cmd) & (1 << 7)) ? I2cTransactionOption_Stop : 0)
);
(*cur_cmd)++;
size_t num_bytes = (**cur_cmd);
(*cur_cmd)++;
R_TRY(Receive(session, *cur_dst, num_bytes, option));
(*cur_dst) += num_bytes;
return ResultSuccess();
}
Result SubCommandHandler(const u8 **cur_cmd, u8 **cur_dst, Session& session) {
const SubCommand sub_cmd = static_cast<SubCommand>((**cur_cmd) >> 2);
(*cur_cmd)++;
switch (sub_cmd) {
case SubCommand::Sleep:
{
const size_t us = (**cur_cmd);
(*cur_cmd)++;
svcSleepThread(us * 1'000ul);
}
break;
AMS_UNREACHABLE_DEFAULT_CASE();
}
return ResultSuccess();
}
/* Command handler list. */
constexpr CommandHandler g_cmd_handlers[static_cast<size_t>(Command::Count)] = {
SendHandler,
ReceiveHandler,
SubCommandHandler,
};
inline impl::ResourceManager &GetResourceManager() {
return impl::ResourceManager::GetInstance();
}
inline void CheckInitialized() {
AMS_ABORT_UNLESS(GetResourceManager().IsInitialized());
}
}
/* Initialization. */
void Initialize() {
GetResourceManager().Initialize();
}
void Finalize() {
GetResourceManager().Finalize();
}
/* Session management. */
void OpenSession(Session *out_session, I2cDevice device) {
CheckInitialized();
AMS_ABORT_UNLESS(impl::IsDeviceSupported(device));
const auto bus = impl::GetDeviceBus(device);
const auto slave_address = impl::GetDeviceSlaveAddress(device);
const auto addressing_mode = impl::GetDeviceAddressingMode(device);
const auto speed_mode = impl::GetDeviceSpeedMode(device);
const auto max_retries = impl::GetDeviceMaxRetries(device);
const auto retry_wait_time = impl::GetDeviceRetryWaitTime(device);
GetResourceManager().OpenSession(out_session, bus, slave_address, addressing_mode, speed_mode, max_retries, retry_wait_time);
}
void CloseSession(Session &session) {
CheckInitialized();
GetResourceManager().CloseSession(session);
}
/* Communication. */
Result Send(Session &session, const void *src, size_t size, I2cTransactionOption option) {
CheckInitialized();
AMS_ABORT_UNLESS(src != nullptr);
AMS_ABORT_UNLESS(size > 0);
std::scoped_lock<os::Mutex &> lk(GetResourceManager().GetTransactionMutex(impl::ConvertFromIndex(session.bus_idx)));
return GetResourceManager().GetSession(session.session_id).DoTransactionWithRetry(nullptr, src, size, option, impl::Command::Send);
}
Result Receive(Session &session, void *dst, size_t size, I2cTransactionOption option) {
CheckInitialized();
AMS_ABORT_UNLESS(dst != nullptr);
AMS_ABORT_UNLESS(size > 0);
std::scoped_lock<os::Mutex &> lk(GetResourceManager().GetTransactionMutex(impl::ConvertFromIndex(session.bus_idx)));
return GetResourceManager().GetSession(session.session_id).DoTransactionWithRetry(dst, nullptr, size, option, impl::Command::Receive);
}
Result ExecuteCommandList(Session &session, void *dst, size_t size, const void *cmd_list, size_t cmd_list_size) {
CheckInitialized();
AMS_ABORT_UNLESS(dst != nullptr && size > 0);
AMS_ABORT_UNLESS(cmd_list != nullptr && cmd_list_size > 0);
u8 *cur_dst = static_cast<u8 *>(dst);
const u8 *cur_cmd = static_cast<const u8 *>(cmd_list);
const u8 *cmd_list_end = cur_cmd + cmd_list_size;
while (cur_cmd < cmd_list_end) {
Command cmd = static_cast<Command>((*cur_cmd) & 3);
AMS_ABORT_UNLESS(cmd < Command::Count);
R_TRY(g_cmd_handlers[static_cast<size_t>(cmd)](&cur_cmd, &cur_dst, session));
}
return ResultSuccess();
}
/* Power management. */
void SuspendBuses() {
GetResourceManager().SuspendBuses();
}
void ResumeBuses() {
GetResourceManager().ResumeBuses();
}
void SuspendPowerBus() {
GetResourceManager().SuspendPowerBus();
}
void ResumePowerBus() {
GetResourceManager().ResumePowerBus();
}
}

46
stratosphere/boot/source/i2c/driver/i2c_api.hpp
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/*
* Copyright (c) 2018-2020 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 "../i2c_types.hpp"
#include "../i2c_command_list.hpp"
namespace ams::i2c::driver {
struct Session {
size_t bus_idx;
size_t session_id;
};
/* Initialization. */
void Initialize();
void Finalize();
/* Session management. */
void OpenSession(Session *out_session, I2cDevice device);
void CloseSession(Session &session);
/* Communication. */
Result Send(Session &session, const void *src, size_t size, I2cTransactionOption option);
Result Receive(Session &session, void *dst, size_t size, I2cTransactionOption option);
Result ExecuteCommandList(Session &session, void *dst, size_t size, const void *cmd_list, size_t cmd_list_size);
/* Power management. */
void SuspendBuses();
void ResumeBuses();
void SuspendPowerBus();
void ResumePowerBus();
}

450
stratosphere/boot/source/i2c/driver/impl/i2c_bus_accessor.cpp
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/*
* Copyright (c) 2018-2020 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/>.
*/
#include <stratosphere.hpp>
#include "i2c_pcv.hpp"
#include "i2c_bus_accessor.hpp"
namespace ams::i2c::driver::impl {
void BusAccessor::Open(Bus bus, SpeedMode speed_mode) {
std::scoped_lock lk(this->open_mutex);
/* Open new session. */
this->open_sessions++;
/* Ensure we're good if this isn't our first session. */
if (this->open_sessions > 1) {
AMS_ABORT_UNLESS(this->speed_mode == speed_mode);
return;
}
/* Set all members for chosen bus. */
{
std::scoped_lock lk(this->register_mutex);
/* Set bus/registers. */
this->SetBus(bus);
/* Set pcv module. */
this->pcv_module = ConvertToPcvModule(bus);
/* Set speed mode. */
this->speed_mode = speed_mode;
/* Setup interrupt event. */
this->CreateInterruptEvent(bus);
}
}
void BusAccessor::Close() {
std::scoped_lock lk(this->open_mutex);
/* Close current session. */
this->open_sessions--;
if (this->open_sessions > 0) {
return;
}
/* Close interrupt event. */
os::FinalizeInterruptEvent(std::addressof(this->interrupt_event));
/* Close PCV. */
pcv::Finalize();
this->suspended = false;
}
void BusAccessor::Suspend() {
std::scoped_lock lk(this->open_mutex);
std::scoped_lock lk_reg(this->register_mutex);
if (!this->suspended) {
this->suspended = true;
if (this->pcv_module != PcvModule_I2C5) {
this->DisableClock();
}
}
}
void BusAccessor::Resume() {
if (this->suspended) {
this->DoInitialConfig();
this->suspended = false;
}
}
void BusAccessor::DoInitialConfig() {
std::scoped_lock lk(this->register_mutex);
if (this->pcv_module != PcvModule_I2C5) {
pcv::Initialize();
}
this->ResetController();
this->SetClock(this->speed_mode);
this->SetPacketMode();
this->FlushFifos();
}
size_t BusAccessor::GetOpenSessions() const {
return this->open_sessions;
}
bool BusAccessor::GetBusy() const {
/* Nintendo has a loop here that calls a member function to check if busy, retrying a few times. */
/* This member function does "return false". */
/* We will not bother with the loop. */
return false;
}
void BusAccessor::OnStartTransaction() const {
/* Nothing actually happens here. */
}
void BusAccessor::OnStopTransaction() const {
/* Nothing actually happens here. */
}
Result BusAccessor::StartTransaction(Command command, AddressingMode addressing_mode, u32 slave_address) {
/* Nothing actually happens here... */
return ResultSuccess();
}
Result BusAccessor::Send(const u8 *data, size_t num_bytes, I2cTransactionOption option, AddressingMode addressing_mode, u32 slave_address) {
std::scoped_lock lk(this->register_mutex);
const u8 *cur_src = data;
size_t remaining = num_bytes;
/* Set interrupt enable, clear interrupt status. */
reg::Write(&this->i2c_registers->I2C_INTERRUPT_MASK_REGISTER_0, 0x8E);
reg::Write(&this->i2c_registers->I2C_INTERRUPT_STATUS_REGISTER_0, 0xFC);
ON_SCOPE_EXIT { this->ClearInterruptMask(); };
/* Send header. */
this->WriteTransferHeader(TransferMode::Send, option, addressing_mode, slave_address, num_bytes);
/* Send bytes. */
while (true) {
const u32 fifo_status = reg::Read(&this->i2c_registers->I2C_FIFO_STATUS_0);
const size_t fifo_cnt = (fifo_status >> 4);
for (size_t fifo_idx = 0; remaining > 0 && fifo_idx < fifo_cnt; fifo_idx++) {
const size_t cur_bytes = std::min(remaining, sizeof(u32));
u32 val = 0;
for (size_t i = 0; i < cur_bytes; i++) {
val |= cur_src[i] << (8 * i);
}
reg::Write(&this->i2c_registers->I2C_I2C_TX_PACKET_FIFO_0, val);
cur_src += cur_bytes;
remaining -= cur_bytes;
}
if (remaining == 0) {
break;
}
os::ClearInterruptEvent(std::addressof(this->interrupt_event));
if (!os::TimedWaitInterruptEvent(std::addressof(this->interrupt_event), InterruptTimeout)) {
this->HandleTransactionResult(i2c::ResultBusBusy());
os::ClearInterruptEvent(std::addressof(this->interrupt_event));
return i2c::ResultTimedOut();
}
R_TRY(this->GetAndHandleTransactionResult());
}
reg::Write(&this->i2c_registers->I2C_INTERRUPT_MASK_REGISTER_0, 0x8C);
/* Wait for successful completion. */
while (true) {
R_TRY(this->GetAndHandleTransactionResult());
/* Check PACKET_XFER_COMPLETE */
const u32 interrupt_status = reg::Read(&this->i2c_registers->I2C_INTERRUPT_STATUS_REGISTER_0);
if (interrupt_status & 0x80) {
R_TRY(this->GetAndHandleTransactionResult());
break;
}
os::ClearInterruptEvent(std::addressof(this->interrupt_event));
if (!os::TimedWaitInterruptEvent(std::addressof(this->interrupt_event), InterruptTimeout)) {
this->HandleTransactionResult(i2c::ResultBusBusy());
os::ClearInterruptEvent(std::addressof(this->interrupt_event));
return i2c::ResultTimedOut();
}
}
return ResultSuccess();
}
Result BusAccessor::Receive(u8 *out_data, size_t num_bytes, I2cTransactionOption option, AddressingMode addressing_mode, u32 slave_address) {
std::scoped_lock lk(this->register_mutex);
u8 *cur_dst = out_data;
size_t remaining = num_bytes;
/* Set interrupt enable, clear interrupt status. */
reg::Write(&this->i2c_registers->I2C_INTERRUPT_MASK_REGISTER_0, 0x8D);
reg::Write(&this->i2c_registers->I2C_INTERRUPT_STATUS_REGISTER_0, 0xFC);
/* Send header. */
this->WriteTransferHeader(TransferMode::Receive, option, addressing_mode, slave_address, num_bytes);
/* Receive bytes. */
while (remaining > 0) {
os::ClearInterruptEvent(std::addressof(this->interrupt_event));
if (!os::TimedWaitInterruptEvent(std::addressof(this->interrupt_event), InterruptTimeout)) {
this->HandleTransactionResult(i2c::ResultBusBusy());
this->ClearInterruptMask();
os::ClearInterruptEvent(std::addressof(this->interrupt_event));
return i2c::ResultTimedOut();
}
R_TRY(this->GetAndHandleTransactionResult());
const u32 fifo_status = reg::Read(&this->i2c_registers->I2C_FIFO_STATUS_0);
const size_t fifo_cnt = std::min((remaining + 3) >> 2, static_cast<size_t>(fifo_status & 0xF));
for (size_t fifo_idx = 0; remaining > 0 && fifo_idx < fifo_cnt; fifo_idx++) {
const u32 val = reg::Read(&this->i2c_registers->I2C_I2C_RX_FIFO_0);
const size_t cur_bytes = std::min(remaining, sizeof(u32));
for (size_t i = 0; i < cur_bytes; i++) {
cur_dst[i] = static_cast<u8>((val >> (8 * i)) & 0xFF);
}
cur_dst += cur_bytes;
remaining -= cur_bytes;
}
}
/* N doesn't do ClearInterruptMask. */
return ResultSuccess();
}
void BusAccessor::SetBus(Bus bus) {
this->bus = bus;
this->i2c_registers = GetRegisters(bus);
this->clkrst_registers.SetBus(bus);
}
void BusAccessor::CreateInterruptEvent(Bus bus) {
static constexpr u64 s_interrupts[] = {
0x46, 0x74, 0x7C, 0x98, 0x55, 0x5F
};
const auto index = ConvertToIndex(bus);
AMS_ABORT_UNLESS(index < util::size(s_interrupts));
os::InitializeInterruptEvent(std::addressof(this->interrupt_event), s_interrupts[index], os::EventClearMode_ManualClear);
os::ClearInterruptEvent(std::addressof(this->interrupt_event));
}
void BusAccessor::SetClock(SpeedMode speed_mode) {
u32 t_high, t_low;
u32 clk_div, src_div;
u32 debounce;
switch (speed_mode) {
case SpeedMode::Normal:
t_high = 2;
t_low = 4;
clk_div = 0x19;
src_div = 0x13;
debounce = 2;
break;
case SpeedMode::Fast:
t_high = 2;
t_low = 4;
clk_div = 0x19;
src_div = 0x04;
debounce = 2;
break;
case SpeedMode::FastPlus:
t_high = 2;
t_low = 4;
clk_div = 0x10;
src_div = 0x02;
debounce = 0;
break;
case SpeedMode::HighSpeed:
t_high = 3;
t_low = 8;
clk_div = 0x02;
src_div = 0x02;
debounce = 0;
break;
AMS_UNREACHABLE_DEFAULT_CASE();
}
if (speed_mode == SpeedMode::HighSpeed) {
reg::Write(&this->i2c_registers->I2C_I2C_HS_INTERFACE_TIMING_0_0, (t_high << 8) | (t_low));
reg::Write(&this->i2c_registers->I2C_I2C_CLK_DIVISOR_REGISTER_0, clk_div);
} else {
reg::Write(&this->i2c_registers->I2C_I2C_INTERFACE_TIMING_0_0, (t_high << 8) | (t_low));
reg::Write(&this->i2c_registers->I2C_I2C_CLK_DIVISOR_REGISTER_0, (clk_div << 16));
}
reg::Write(&this->i2c_registers->I2C_I2C_CNFG_0, debounce);
reg::Read(&this->i2c_registers->I2C_I2C_CNFG_0);
if (this->pcv_module != PcvModule_I2C5) {
R_ABORT_UNLESS(pcv::SetReset(this->pcv_module, true));
R_ABORT_UNLESS(pcv::SetClockRate(this->pcv_module, (408'000'000) / (src_div + 1)));
R_ABORT_UNLESS(pcv::SetReset(this->pcv_module, false));
}
}
void BusAccessor::ResetController() const {
if (this->pcv_module != PcvModule_I2C5) {
R_ABORT_UNLESS(pcv::SetReset(this->pcv_module, true));
R_ABORT_UNLESS(pcv::SetClockRate(this->pcv_module, 81'600'000));
R_ABORT_UNLESS(pcv::SetReset(this->pcv_module, false));
}
}
void BusAccessor::ClearBus() const {
bool success = false;
for (size_t i = 0; i < 3 && !success; i++) {
success = true;
this->ResetController();
reg::Write(&this->i2c_registers->I2C_I2C_BUS_CLEAR_CONFIG_0, 0x90000);
reg::SetBits(&this->i2c_registers->I2C_I2C_BUS_CLEAR_CONFIG_0, 0x4);
reg::SetBits(&this->i2c_registers->I2C_I2C_BUS_CLEAR_CONFIG_0, 0x2);
reg::SetBits(&this->i2c_registers->I2C_I2C_CONFIG_LOAD_0, 0x1);
{
u64 start_tick = armGetSystemTick();
while (reg::Read(&this->i2c_registers->I2C_I2C_CONFIG_LOAD_0) & 1) {
if (armTicksToNs(armGetSystemTick() - start_tick) > 1'000'000) {
success = false;
break;
}
}
}
if (!success) {
continue;
}
reg::SetBits(&this->i2c_registers->I2C_I2C_BUS_CLEAR_CONFIG_0, 0x1);
{
u64 start_tick = armGetSystemTick();
while (reg::Read(&this->i2c_registers->I2C_I2C_BUS_CLEAR_CONFIG_0) & 1) {
if (armTicksToNs(armGetSystemTick() - start_tick) > 1'000'000) {
success = false;
break;
}
}
}
if (!success) {
continue;
}
{
u64 start_tick = armGetSystemTick();
while (reg::Read(&this->i2c_registers->I2C_I2C_BUS_CLEAR_STATUS_0) & 1) {
if (armTicksToNs(armGetSystemTick() - start_tick) > 1'000'000) {
success = false;
break;
}
}
}
if (!success) {
continue;
}
}
}
void BusAccessor::DisableClock() {
R_ABORT_UNLESS(pcv::SetClockEnabled(this->pcv_module, false));
}
void BusAccessor::SetPacketMode() {
/* Set PACKET_MODE_EN, MSTR_CONFIG_LOAD */
reg::SetBits(&this->i2c_registers->I2C_I2C_CNFG_0, 0x400);
reg::SetBits(&this->i2c_registers->I2C_I2C_CONFIG_LOAD_0, 0x1);
/* Set TX_FIFO_TRIGGER, RX_FIFO_TRIGGER */
reg::Write(&this->i2c_registers->I2C_FIFO_CONTROL_0, 0xFC);
}
Result BusAccessor::FlushFifos() {
reg::Write(&this->i2c_registers->I2C_FIFO_CONTROL_0, 0xFF);
/* Wait for flush to finish, check every ms for 5 ms. */
for (size_t i = 0; i < 5; i++) {
const bool flush_done = (reg::Read(&this->i2c_registers->I2C_FIFO_CONTROL_0) & 3) == 0;
R_SUCCEED_IF(flush_done);
svcSleepThread(1'000'000ul);
}
return i2c::ResultBusBusy();
}
Result BusAccessor::GetTransactionResult() const {
const u32 packet_status = reg::Read(&this->i2c_registers->I2C_PACKET_TRANSFER_STATUS_0);
const u32 interrupt_status = reg::Read(&this->i2c_registers->I2C_INTERRUPT_STATUS_REGISTER_0);
/* Check for no ack. */
R_UNLESS(!(packet_status & 0xC), i2c::ResultNoAck());
R_UNLESS(!(interrupt_status & 0x8), i2c::ResultNoAck());
/* Check for arb lost. */
{
auto bus_guard = SCOPE_GUARD { this->ClearBus(); };
R_UNLESS(!(packet_status & 0x2), i2c::ResultBusBusy());
R_UNLESS(!(interrupt_status & 0x4), i2c::ResultBusBusy());
bus_guard.Cancel();
}
return ResultSuccess();
}
void BusAccessor::HandleTransactionResult(Result result) {
R_TRY_CATCH(result) {
R_CATCH(i2c::ResultNoAck, i2c::ResultBusBusy) {
this->ResetController();
this->SetClock(this->speed_mode);
this->SetPacketMode();
this->FlushFifos();
}
} R_END_TRY_CATCH_WITH_ABORT_UNLESS;
}
Result BusAccessor::GetAndHandleTransactionResult() {
const auto transaction_result = this->GetTransactionResult();
R_SUCCEED_IF(R_SUCCEEDED(transaction_result));
this->HandleTransactionResult(transaction_result);
this->ClearInterruptMask();
os::ClearInterruptEvent(std::addressof(this->interrupt_event));
return transaction_result;
}
void BusAccessor::WriteTransferHeader(TransferMode transfer_mode, I2cTransactionOption option, AddressingMode addressing_mode, u32 slave_address, size_t num_bytes) {
this->FlushFifos();
reg::Write(&this->i2c_registers->I2C_I2C_TX_PACKET_FIFO_0, 0x10);
reg::Write(&this->i2c_registers->I2C_I2C_TX_PACKET_FIFO_0, static_cast<u32>(num_bytes - 1) & 0xFFF);
const u32 slave_addr_val = ((transfer_mode == TransferMode::Receive) & 1) | ((slave_address & 0x7F) << 1);
u32 hdr_val = 0;
hdr_val |= ((this->speed_mode == SpeedMode::HighSpeed) & 1) << 22;
hdr_val |= ((transfer_mode == TransferMode::Receive) & 1) << 19;
hdr_val |= ((addressing_mode != AddressingMode::SevenBit) & 1) << 18;
hdr_val |= (1 << 17);
hdr_val |= (((option & I2cTransactionOption_Stop) == 0) & 1) << 16;
hdr_val |= slave_addr_val;
reg::Write(&this->i2c_registers->I2C_I2C_TX_PACKET_FIFO_0, hdr_val);
}
}

81
stratosphere/boot/source/i2c/driver/impl/i2c_bus_accessor.hpp
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@ -1,81 +0,0 @@
/*
* Copyright (c) 2018-2020 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 "i2c_driver_types.hpp"
#include "i2c_registers.hpp"
namespace ams::i2c::driver::impl {
class BusAccessor {
private:
enum class TransferMode {
Send = 0,
Receive = 1,
};
static constexpr TimeSpan InterruptTimeout = TimeSpan::FromMilliSeconds(100);
private:
os::InterruptEventType interrupt_event;
os::Mutex open_mutex;
os::Mutex register_mutex;
Registers *i2c_registers = nullptr;
ClkRstRegisters clkrst_registers;
SpeedMode speed_mode = SpeedMode::Fast;
size_t open_sessions = 0;
Bus bus = Bus::I2C1;
PcvModule pcv_module = PcvModule_I2C1;
bool suspended = false;
public:
BusAccessor() : open_mutex(false), register_mutex(false) { /* ... */ }
private:
inline void ClearInterruptMask() const {
reg::Write(&i2c_registers->I2C_INTERRUPT_MASK_REGISTER_0, 0);
reg::Read(&i2c_registers->I2C_INTERRUPT_MASK_REGISTER_0);
}
void SetBus(Bus bus);
void CreateInterruptEvent(Bus bus);
void SetClock(SpeedMode speed_mode);
void ResetController() const;
void ClearBus() const;
void DisableClock();
void SetPacketMode();
Result FlushFifos();
Result GetTransactionResult() const;
void HandleTransactionResult(Result result);
Result GetAndHandleTransactionResult();
void WriteTransferHeader(TransferMode transfer_mode, I2cTransactionOption option, AddressingMode addressing_mode, u32 slave_address, size_t num_bytes);
public:
void Open(Bus bus, SpeedMode speed_mode);
void Close();
void Suspend();
void Resume();
void DoInitialConfig();
size_t GetOpenSessions() const;
bool GetBusy() const;
void OnStartTransaction() const;
Result StartTransaction(Command command, AddressingMode addressing_mode, u32 slave_address);
Result Send(const u8 *data, size_t num_bytes, I2cTransactionOption option, AddressingMode addressing_mode, u32 slave_address);
Result Receive(u8 *out_data, size_t num_bytes, I2cTransactionOption option, AddressingMode addressing_mode, u32 slave_address);
void OnStopTransaction() const;
};
}

122
stratosphere/boot/source/i2c/driver/impl/i2c_device_config.cpp
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@ -1,122 +0,0 @@
/*
* Copyright (c) 2018-2020 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/>.
*/
#include <stratosphere.hpp>
#include "i2c_driver_types.hpp"
namespace ams::i2c::driver::impl {
namespace {
struct DeviceConfig {
I2cDevice device;
Bus bus;
u32 slave_address;
AddressingMode addressing_mode;
SpeedMode speed_mode;
u32 max_retries;
u64 retry_wait_time;
};
constexpr DeviceConfig g_device_configs[I2cDevice_Count] = {
{I2cDevice_DebugPad, Bus::I2C1, 0x52, AddressingMode::SevenBit, SpeedMode::Normal, 0, 0},
{I2cDevice_TouchPanel, Bus::I2C3, 0x49, AddressingMode::SevenBit, SpeedMode::Fast, 0, 0},
{I2cDevice_Tmp451, Bus::I2C1, 0x4c, AddressingMode::SevenBit, SpeedMode::Normal, 0, 0},
{I2cDevice_Nct72, Bus::I2C1, 0x4c, AddressingMode::SevenBit, SpeedMode::Normal, 0, 0},
{I2cDevice_Alc5639, Bus::I2C1, 0x1c, AddressingMode::SevenBit, SpeedMode::Normal, 0, 0},
{I2cDevice_Max77620Rtc, Bus::I2C5, 0x68, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Max77620Pmic, Bus::I2C5, 0x3c, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Max77621Cpu, Bus::I2C5, 0x1b, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Max77621Gpu, Bus::I2C5, 0x1c, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Bq24193, Bus::I2C1, 0x6b, AddressingMode::SevenBit, SpeedMode::Normal, 3, 5'000'000},
{I2cDevice_Max17050, Bus::I2C1, 0x36, AddressingMode::SevenBit, SpeedMode::Normal, 3, 5'000'000},
{I2cDevice_Bm92t30mwv, Bus::I2C1, 0x18, AddressingMode::SevenBit, SpeedMode::Normal, 3, 5'000'000},
{I2cDevice_Ina226Vdd15v0Hb, Bus::I2C2, 0x40, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Ina226VsysCpuDs, Bus::I2C2, 0x41, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Ina226VsysGpuDs, Bus::I2C2, 0x44, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Ina226VsysDdrDs, Bus::I2C2, 0x45, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Ina226VsysAp, Bus::I2C2, 0x46, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Ina226VsysBlDs, Bus::I2C2, 0x47, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Bh1730, Bus::I2C2, 0x29, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Ina226VsysCore, Bus::I2C2, 0x48, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Ina226Soc1V8, Bus::I2C2, 0x49, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Ina226Lpddr1V8, Bus::I2C2, 0x4a, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Ina226Reg1V32, Bus::I2C2, 0x4b, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_Ina226Vdd3V3Sys, Bus::I2C2, 0x4d, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
{I2cDevice_HdmiDdc, Bus::I2C4, 0x50, AddressingMode::SevenBit, SpeedMode::Normal, 0, 0},
{I2cDevice_HdmiScdc, Bus::I2C4, 0x54, AddressingMode::SevenBit, SpeedMode::Normal, 0, 0},
{I2cDevice_HdmiHdcp, Bus::I2C4, 0x3a, AddressingMode::SevenBit, SpeedMode::Normal, 0, 0},
{I2cDevice_Fan53528, Bus::I2C5, 0xa4, AddressingMode::SevenBit, SpeedMode::Fast, 0, 0},
{I2cDevice_Max77812_3, Bus::I2C5, 0x31, AddressingMode::SevenBit, SpeedMode::Fast, 0, 0},
{I2cDevice_Max77812_2, Bus::I2C5, 0x33, AddressingMode::SevenBit, SpeedMode::Fast, 0, 0},
{I2cDevice_Ina226VddDdr0V6, Bus::I2C2, 0x4e, AddressingMode::SevenBit, SpeedMode::Fast, 3, 5'000'000},
};
constexpr size_t NumDeviceConfigs = util::size(g_device_configs);
constexpr size_t DeviceInvalidIndex = static_cast<size_t>(-1);
size_t GetDeviceIndex(I2cDevice dev) {
for (size_t i = 0; i < NumDeviceConfigs; i++) {
if (g_device_configs[i].device == dev) {
return i;
}
}
return DeviceInvalidIndex;
}
}
bool IsDeviceSupported(I2cDevice dev) {
return GetDeviceIndex(dev) != DeviceInvalidIndex;
}
Bus GetDeviceBus(I2cDevice dev) {
const size_t dev_idx = GetDeviceIndex(dev);
AMS_ABORT_UNLESS(dev_idx != DeviceInvalidIndex);
return g_device_configs[dev_idx].bus;
}
u32 GetDeviceSlaveAddress(I2cDevice dev) {
const size_t dev_idx = GetDeviceIndex(dev);
AMS_ABORT_UNLESS(dev_idx != DeviceInvalidIndex);
return g_device_configs[dev_idx].slave_address;
}
AddressingMode GetDeviceAddressingMode(I2cDevice dev) {
const size_t dev_idx = GetDeviceIndex(dev);
AMS_ABORT_UNLESS(dev_idx != DeviceInvalidIndex);
return g_device_configs[dev_idx].addressing_mode;
}
SpeedMode GetDeviceSpeedMode(I2cDevice dev) {
const size_t dev_idx = GetDeviceIndex(dev);
AMS_ABORT_UNLESS(dev_idx != DeviceInvalidIndex);
return g_device_configs[dev_idx].speed_mode;
}
u32 GetDeviceMaxRetries(I2cDevice dev) {
const size_t dev_idx = GetDeviceIndex(dev);
AMS_ABORT_UNLESS(dev_idx != DeviceInvalidIndex);
return g_device_configs[dev_idx].max_retries;
}
u64 GetDeviceRetryWaitTime(I2cDevice dev) {
const size_t dev_idx = GetDeviceIndex(dev);
AMS_ABORT_UNLESS(dev_idx != DeviceInvalidIndex);
return g_device_configs[dev_idx].retry_wait_time;
}
}

91
stratosphere/boot/source/i2c/driver/impl/i2c_driver_types.hpp
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@ -1,91 +0,0 @@
/*
* Copyright (c) 2018-2020 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 "../../i2c_types.hpp"
namespace ams::i2c::driver::impl {
enum class Command {
Send = 0,
Receive = 1,
};
enum class Bus {
I2C1 = 0,
I2C2 = 1,
I2C3 = 2,
I2C4 = 3,
I2C5 = 4,
I2C6 = 5,
Count,
};
/* Bus helpers. */
constexpr inline size_t ConvertToIndex(Bus bus) {
return static_cast<size_t>(bus);
}
constexpr inline Bus ConvertFromIndex(size_t idx) {
AMS_ABORT_UNLESS(idx < static_cast<size_t>(Bus::Count));
return static_cast<Bus>(idx);
}
constexpr inline PcvModule ConvertToPcvModule(Bus bus) {
switch (bus) {
case Bus::I2C1:
return PcvModule_I2C1;
case Bus::I2C2:
return PcvModule_I2C2;
case Bus::I2C3:
return PcvModule_I2C3;
case Bus::I2C4:
return PcvModule_I2C4;
case Bus::I2C5:
return PcvModule_I2C5;
case Bus::I2C6:
return PcvModule_I2C6;
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
constexpr inline Bus ConvertFromPcvModule(PcvModule module) {
switch (module) {
case PcvModule_I2C1:
return Bus::I2C1;
case PcvModule_I2C2:
return Bus::I2C2;
case PcvModule_I2C3:
return Bus::I2C3;
case PcvModule_I2C4:
return Bus::I2C4;
case PcvModule_I2C5:
return Bus::I2C5;
case PcvModule_I2C6:
return Bus::I2C6;
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
/* Global type functions. */
bool IsDeviceSupported(I2cDevice dev);
Bus GetDeviceBus(I2cDevice dev);
u32 GetDeviceSlaveAddress(I2cDevice dev);
AddressingMode GetDeviceAddressingMode(I2cDevice dev);
SpeedMode GetDeviceSpeedMode(I2cDevice dev);
u32 GetDeviceMaxRetries(I2cDevice dev);
u64 GetDeviceRetryWaitTime(I2cDevice dev);
}

31
stratosphere/boot/source/i2c/driver/impl/i2c_pcv.hpp
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@ -1,31 +0,0 @@
/*
* Copyright (c) 2018-2020 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 <stratosphere.hpp>
/* This forward declares the functionality from pcv that i2c::driver uses. */
/* This allows for overriding at compile-time (e.g., for boot sysmodule). */
namespace ams::pcv {
void Initialize();
void Finalize();
Result SetClockRate(PcvModule module, u32 hz);
Result SetClockEnabled(PcvModule module, bool enabled);
Result SetVoltageEnabled(u32 domain, bool enabled);
Result SetVoltageValue(u32 domain, u32 voltage);
Result SetReset(PcvModule module, bool reset);
}

104
stratosphere/boot/source/i2c/driver/impl/i2c_registers.hpp
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@ -1,104 +0,0 @@
/*
* Copyright (c) 2018-2020 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 "i2c_driver_types.hpp"
namespace ams::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:
uintptr_t clk_src_reg;
uintptr_t clk_en_reg;
uintptr_t 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 = dd::GetIoMapping(0x60006000ul, os::MemoryPageSize);
const size_t idx = ConvertToIndex(bus);
this->clk_src_reg = registers + s_clk_src_offsets[idx];
this->clk_en_reg = registers + s_clk_en_offsets[idx];
this->rst_reg = 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 = dd::GetIoMapping(0x7000c000ul, 2 * os::MemoryPageSize) + s_offsets[ConvertToIndex(bus)];
return reinterpret_cast<Registers *>(registers);
}
}

175
stratosphere/boot/source/i2c/driver/impl/i2c_resource_manager.cpp
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@ -1,175 +0,0 @@
/*
* Copyright (c) 2018-2020 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/>.
*/
#include <stratosphere.hpp>
#include "i2c_pcv.hpp"
#include "i2c_resource_manager.hpp"
namespace ams::i2c::driver::impl {
void ResourceManager::Initialize() {
std::scoped_lock lk(this->initialize_mutex);
this->ref_cnt++;
}
void ResourceManager::Finalize() {
std::scoped_lock lk(this->initialize_mutex);
AMS_ABORT_UNLESS(this->ref_cnt > 0);
this->ref_cnt--;
if (this->ref_cnt > 0) {
return;
}
{
std::scoped_lock sess_lk(this->session_open_mutex);
for (size_t i = 0; i < MaxDriverSessions; i++) {
this->sessions[i].Close();
}
}
}
size_t ResourceManager::GetFreeSessionId() const {
for (size_t i = 0; i < MaxDriverSessions; i++) {
if (!this->sessions[i].IsOpen()) {
return i;
}
}
return InvalidSessionId;
}
void ResourceManager::OpenSession(driver::Session *out_session, Bus bus, u32 slave_address, AddressingMode addressing_mode, SpeedMode speed_mode, u32 max_retries, u64 retry_wait_time) {
bool need_enable_ldo6 = false;
size_t session_id = InvalidSessionId;
/* Get, open session. */
{
std::scoped_lock lk(this->session_open_mutex);
AMS_ABORT_UNLESS(out_session != nullptr);
AMS_ABORT_UNLESS(bus < Bus::Count);
session_id = GetFreeSessionId();
AMS_ABORT_UNLESS(session_id != InvalidSessionId);
if ((bus == Bus::I2C2 || bus == Bus::I2C3) && (this->bus_accessors[ConvertToIndex(Bus::I2C2)].GetOpenSessions() == 0 && this->bus_accessors[ConvertToIndex(Bus::I2C3)].GetOpenSessions() == 0)) {
need_enable_ldo6 = true;
}
out_session->session_id = session_id;
out_session->bus_idx = ConvertToIndex(bus);
this->sessions[session_id].Open(bus, slave_address, addressing_mode, speed_mode, &this->bus_accessors[ConvertToIndex(bus)], max_retries, retry_wait_time);
}
this->sessions[session_id].Start();
if (need_enable_ldo6) {
pcv::Initialize();
R_ABORT_UNLESS(pcv::SetVoltageValue(10, 2'900'000));
R_ABORT_UNLESS(pcv::SetVoltageEnabled(10, true));
pcv::Finalize();
svcSleepThread(560'000ul);
}
}
void ResourceManager::CloseSession(const driver::Session &session) {
bool need_disable_ldo6 = false;
/* Get, open session. */
{
std::scoped_lock lk(this->session_open_mutex);
AMS_ABORT_UNLESS(this->sessions[session.session_id].IsOpen());
this->sessions[session.session_id].Close();
if ((ConvertFromIndex(session.bus_idx) == Bus::I2C2 || ConvertFromIndex(session.bus_idx) == Bus::I2C3) &&
(this->bus_accessors[ConvertToIndex(Bus::I2C2)].GetOpenSessions() == 0 && this->bus_accessors[ConvertToIndex(Bus::I2C3)].GetOpenSessions() == 0)) {
need_disable_ldo6 = true;
}
}
if (need_disable_ldo6) {
pcv::Initialize();
R_ABORT_UNLESS(pcv::SetVoltageEnabled(10, false));
pcv::Finalize();
}
}
void ResourceManager::SuspendBuses() {
AMS_ABORT_UNLESS(this->ref_cnt > 0);
if (!this->suspended) {
{
std::scoped_lock lk(this->session_open_mutex);
this->suspended = true;
for (size_t i = 0; i < ConvertToIndex(Bus::Count); i++) {
if (i != PowerBusId && this->bus_accessors[i].GetOpenSessions() > 0) {
this->bus_accessors[i].Suspend();
}
}
}
pcv::Initialize();
R_ABORT_UNLESS(pcv::SetVoltageEnabled(10, false));
pcv::Finalize();
}
}
void ResourceManager::ResumeBuses() {
AMS_ABORT_UNLESS(this->ref_cnt > 0);
if (this->suspended) {
if (this->bus_accessors[ConvertToIndex(Bus::I2C2)].GetOpenSessions() > 0 || this->bus_accessors[ConvertToIndex(Bus::I2C3)].GetOpenSessions() > 0) {
pcv::Initialize();
R_ABORT_UNLESS(pcv::SetVoltageValue(10, 2'900'000));
R_ABORT_UNLESS(pcv::SetVoltageEnabled(10, true));
pcv::Finalize();
svcSleepThread(1'560'000ul);
}
{
std::scoped_lock lk(this->session_open_mutex);
for (size_t i = 0; i < ConvertToIndex(Bus::Count); i++) {
if (i != PowerBusId && this->bus_accessors[i].GetOpenSessions() > 0) {
this->bus_accessors[i].Resume();
}
}
}
this->suspended = false;
}
}
void ResourceManager::SuspendPowerBus() {
AMS_ABORT_UNLESS(this->ref_cnt > 0);
std::scoped_lock lk(this->session_open_mutex);
if (!this->power_bus_suspended) {
this->power_bus_suspended = true;
if (this->bus_accessors[PowerBusId].GetOpenSessions() > 0) {
this->bus_accessors[PowerBusId].Suspend();
}
}
}
void ResourceManager::ResumePowerBus() {
AMS_ABORT_UNLESS(this->ref_cnt > 0);
std::scoped_lock lk(this->session_open_mutex);
if (this->power_bus_suspended) {
if (this->bus_accessors[PowerBusId].GetOpenSessions() > 0) {
this->bus_accessors[PowerBusId].Resume();
}
this->power_bus_suspended = false;
}
}
}

82
stratosphere/boot/source/i2c/driver/impl/i2c_resource_manager.hpp
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@ -1,82 +0,0 @@
/*
* Copyright (c) 2018-2020 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 "../i2c_api.hpp"
#include "i2c_driver_types.hpp"
#include "i2c_bus_accessor.hpp"
#include "i2c_session.hpp"
namespace ams::i2c::driver::impl {
class ResourceManager {
public:
static constexpr size_t MaxDriverSessions = 40;
static constexpr size_t PowerBusId = ConvertToIndex(Bus::I2C5);
static constexpr size_t InvalidSessionId = static_cast<size_t>(-1);
private:
os::Mutex initialize_mutex;
os::Mutex session_open_mutex;
size_t ref_cnt = 0;
bool suspended = false;
bool power_bus_suspended = false;
Session sessions[MaxDriverSessions];
BusAccessor bus_accessors[ConvertToIndex(Bus::Count)];
TYPED_STORAGE(os::Mutex) transaction_mutexes[ConvertToIndex(Bus::Count)];
public:
ResourceManager() : initialize_mutex(false), session_open_mutex(false) {
for (size_t i = 0; i < util::size(this->transaction_mutexes); i++) {
new (GetPointer(this->transaction_mutexes[i])) os::Mutex(false);
}
}
~ResourceManager() {
for (size_t i = 0; i < util::size(this->transaction_mutexes); i++) {
GetReference(this->transaction_mutexes[i]).~Mutex();
}
}
private:
size_t GetFreeSessionId() const;
public:
/* N uses a singleton here, we'll oblige. */
static ResourceManager &GetInstance() {
static ResourceManager s_instance;
return s_instance;
}
bool IsInitialized() const {
return this->ref_cnt > 0;
}
Session& GetSession(size_t id) {
return this->sessions[id];
}
os::Mutex& GetTransactionMutex(Bus bus) {
return GetReference(this->transaction_mutexes[ConvertToIndex(bus)]);
}
void Initialize();
void Finalize();
void OpenSession(driver::Session *out_session, Bus bus, u32 slave_address, AddressingMode addressing_mode, SpeedMode speed_mode, u32 max_retries, u64 retry_wait_time);
void CloseSession(const driver::Session &session);
void SuspendBuses();
void ResumeBuses();
void SuspendPowerBus();
void ResumePowerBus();
};
}

96
stratosphere/boot/source/i2c/driver/impl/i2c_session.cpp
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@ -1,96 +0,0 @@
/*
* Copyright (c) 2018-2020 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/>.
*/
#include <stratosphere.hpp>
#include "i2c_session.hpp"
namespace ams::i2c::driver::impl {
void Session::Open(Bus bus, u32 slave_address, AddressingMode addr_mode, SpeedMode speed_mode, BusAccessor *bus_accessor, u32 max_retries, u64 retry_wait_time) {
std::scoped_lock lk(this->bus_accessor_mutex);
if (!this->open) {
this->bus_accessor = bus_accessor;
this->bus = bus;
this->slave_address = slave_address;
this->addressing_mode = addr_mode;
this->max_retries = max_retries;
this->retry_wait_time = retry_wait_time;
this->bus_accessor->Open(this->bus, speed_mode);
this->open = true;
}
}
void Session::Start() {
std::scoped_lock lk(this->bus_accessor_mutex);
if (this->open) {
if (this->bus_accessor->GetOpenSessions() == 1) {
this->bus_accessor->DoInitialConfig();
}
}
}
void Session::Close() {
std::scoped_lock lk(this->bus_accessor_mutex);
if (this->open) {
this->bus_accessor->Close();
this->bus_accessor = nullptr;
this->open = false;
}
}
bool Session::IsOpen() const {
return this->open;
}
Result Session::DoTransaction(void *dst, const void *src, size_t num_bytes, I2cTransactionOption option, Command command) {
std::scoped_lock lk(this->bus_accessor_mutex);
R_UNLESS(!this->bus_accessor->GetBusy(), i2c::ResultBusBusy());
this->bus_accessor->OnStartTransaction();
ON_SCOPE_EXIT { this->bus_accessor->OnStopTransaction(); };
R_TRY(this->bus_accessor->StartTransaction(command, this->addressing_mode, this->slave_address));
switch (command) {
case Command::Send:
R_TRY(this->bus_accessor->Send(reinterpret_cast<const u8 *>(src), num_bytes, option, this->addressing_mode, this->slave_address));
break;
case Command::Receive:
R_TRY(this->bus_accessor->Receive(reinterpret_cast<u8 *>(dst), num_bytes, option, this->addressing_mode, this->slave_address));
break;
AMS_UNREACHABLE_DEFAULT_CASE();
}
return ResultSuccess();
}
Result Session::DoTransactionWithRetry(void *dst, const void *src, size_t num_bytes, I2cTransactionOption option, Command command) {
size_t i = 0;
while (true) {
R_TRY_CATCH(this->DoTransaction(dst, src, num_bytes, option, command)) {
R_CATCH(i2c::ResultTimedOut) {
if ((++i) <= this->max_retries) {
svcSleepThread(this->retry_wait_time);
continue;
}
return i2c::ResultBusBusy();
}
} R_END_TRY_CATCH;
return ResultSuccess();
}
}
}

47
stratosphere/boot/source/i2c/driver/impl/i2c_session.hpp
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@ -1,47 +0,0 @@
/*
* Copyright (c) 2018-2020 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 "i2c_driver_types.hpp"
#include "i2c_bus_accessor.hpp"
namespace ams::i2c::driver::impl {
class Session {
private:
os::Mutex bus_accessor_mutex;
BusAccessor *bus_accessor = nullptr;
Bus bus = Bus::I2C1;
u32 slave_address = 0;
AddressingMode addressing_mode = AddressingMode::SevenBit;
u32 max_retries = 0;
u64 retry_wait_time = 0;
bool open = false;
public:
Session() : bus_accessor_mutex(false) { /* ... */ }
public:
void Open(Bus bus, u32 slave_address, AddressingMode addr_mode, SpeedMode speed_mode, BusAccessor *bus_accessor, u32 max_retries, u64 retry_wait_time);
void Start();
void Close();
bool IsOpen() const;
Result DoTransaction(void *dst, const void *src, size_t num_bytes, I2cTransactionOption option, Command command);
Result DoTransactionWithRetry(void *dst, const void *src, size_t num_bytes, I2cTransactionOption option, Command command);
};
}

78
stratosphere/boot/source/i2c/i2c_command_list.cpp
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@ -1,78 +0,0 @@
/*
* Copyright (c) 2018-2020 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/>.
*/
#include <stratosphere.hpp>
#include "i2c_types.hpp"
#include "i2c_command_list.hpp"
namespace ams::i2c {
namespace {
/* Useful definitions. */
constexpr size_t SendCommandSize = 2;
constexpr size_t ReceiveCommandSize = 2;
constexpr size_t SleepCommandSize = 2;
}
Result CommandListFormatter::CanEnqueue(size_t size) const {
R_UNLESS(this->cmd_list_size - this->cur_index >= size, ResultFullCommandList());
return ResultSuccess();
}
Result CommandListFormatter::EnqueueSendCommand(I2cTransactionOption option, const void *src, size_t size) {
R_TRY(this->CanEnqueue(SendCommandSize + size));
this->cmd_list[this->cur_index] = static_cast<u8>(Command::Send);
this->cmd_list[this->cur_index] |= ((option & I2cTransactionOption_Start) != 0) << 6;
this->cmd_list[this->cur_index] |= ((option & I2cTransactionOption_Stop) != 0) << 7;
this->cur_index++;
this->cmd_list[this->cur_index++] = size;
const u8 *src_u8 = reinterpret_cast<const u8 *>(src);
for (size_t i = 0; i < size; i++) {
this->cmd_list[this->cur_index++] = src_u8[i];
}
return ResultSuccess();
}
Result CommandListFormatter::EnqueueReceiveCommand(I2cTransactionOption option, size_t size) {
R_TRY(this->CanEnqueue(ReceiveCommandSize));
this->cmd_list[this->cur_index] = static_cast<u8>(Command::Receive);
this->cmd_list[this->cur_index] |= ((option & I2cTransactionOption_Start) != 0) << 6;
this->cmd_list[this->cur_index] |= ((option & I2cTransactionOption_Stop) != 0) << 7;
this->cur_index++;
this->cmd_list[this->cur_index++] = size;
return ResultSuccess();
}
Result CommandListFormatter::EnqueueSleepCommand(size_t us) {
R_TRY(this->CanEnqueue(SleepCommandSize));
this->cmd_list[this->cur_index] = static_cast<u8>(Command::SubCommand);
this->cmd_list[this->cur_index] |= static_cast<u8>(SubCommand::Sleep) << 2;
this->cur_index++;
this->cmd_list[this->cur_index++] = us;
return ResultSuccess();
}
}

60
stratosphere/boot/source/i2c/i2c_command_list.hpp
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@ -1,60 +0,0 @@
/*
* Copyright (c) 2018-2020 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 "i2c_types.hpp"
namespace ams::i2c {
enum class Command {
Send = 0,
Receive = 1,
SubCommand = 2,
Count,
};
enum class SubCommand {
Sleep = 0,
Count,
};
class CommandListFormatter {
public:
static constexpr size_t MaxCommandListSize = 0x100;
private:
u8 *cmd_list = nullptr;
size_t cmd_list_size = 0;
size_t cur_index = 0;
public:
CommandListFormatter(void *cmd_list, size_t cmd_list_size) : cmd_list(static_cast<u8 *>(cmd_list)), cmd_list_size(cmd_list_size) {
AMS_ABORT_UNLESS(cmd_list_size <= MaxCommandListSize);
}
~CommandListFormatter() {
this->cmd_list = nullptr;
}
private:
Result CanEnqueue(size_t size) const;
public:
size_t GetCurrentSize() const {
return this->cur_index;
}
Result EnqueueSendCommand(I2cTransactionOption option, const void *src, size_t size);
Result EnqueueReceiveCommand(I2cTransactionOption option, size_t size);
Result EnqueueSleepCommand(size_t us);
};
}

32
stratosphere/boot/source/i2c/i2c_types.hpp
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@ -1,32 +0,0 @@
/*
* Copyright (c) 2018-2020 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 <stratosphere.hpp>
namespace ams::i2c {
enum class AddressingMode {
SevenBit = 0,
};
enum class SpeedMode {
Normal = 100000,
Fast = 400000,
FastPlus = 1000000,
HighSpeed = 3400000,
};
}