1 files changed, 123 insertions, 0 deletions
diff --git a/src/core/hle/service/glue/time/standard_steady_clock_resource.cpp b/src/core/hle/service/glue/time/standard_steady_clock_resource.cpp
new file mode 100644
index 000000000..5ebaa33e0
--- /dev/null
+++ b/src/core/hle/service/glue/time/standard_steady_clock_resource.cpp
@@ -0,0 +1,123 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <chrono>
+
+#include "common/settings.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/hle/kernel/svc.h"
+#include "core/hle/service/glue/time/standard_steady_clock_resource.h"
+#include "core/hle/service/psc/time/errors.h"
+
+namespace Service::Glue::Time {
+namespace {
+[[maybe_unused]] constexpr u32 Max77620PmicSession = 0x3A000001;
+[[maybe_unused]] constexpr u32 Max77620RtcSession = 0x3B000001;
+
+Result GetTimeInSeconds(Core::System& system, s64& out_time_s) {
+    out_time_s = std::chrono::duration_cast<std::chrono::seconds>(
+                     std::chrono::system_clock::now().time_since_epoch())
+                     .count();
+
+    if (Settings::values.custom_rtc_enabled) {
+        out_time_s += Settings::values.custom_rtc_offset.GetValue();
+    }
+    R_SUCCEED();
+}
+} // namespace
+
+StandardSteadyClockResource::StandardSteadyClockResource(Core::System& system) : m_system{system} {}
+
+void StandardSteadyClockResource::Initialize(Common::UUID* out_source_id,
+                                             Common::UUID* external_source_id) {
+    constexpr size_t NUM_TRIES{20};
+
+    size_t i{0};
+    Result res{ResultSuccess};
+    for (; i < NUM_TRIES; i++) {
+        res = SetCurrentTime();
+        if (res == ResultSuccess) {
+            break;
+        }
+        Kernel::Svc::SleepThread(m_system, std::chrono::duration_cast<std::chrono::nanoseconds>(
+                                               std::chrono::milliseconds(1))
+                                               .count());
+    }
+
+    if (i < NUM_TRIES) {
+        m_set_time_result = ResultSuccess;
+        if (*external_source_id != Service::PSC::Time::ClockSourceId{}) {
+            m_clock_source_id = *external_source_id;
+        } else {
+            m_clock_source_id = Common::UUID::MakeRandom();
+        }
+    } else {
+        m_set_time_result = res;
+        auto ticks{m_system.CoreTiming().GetClockTicks()};
+        m_time = -Service::PSC::Time::ConvertToTimeSpan(ticks).count();
+        m_clock_source_id = Common::UUID::MakeRandom();
+    }
+
+    if (out_source_id) {
+        *out_source_id = m_clock_source_id;
+    }
+}
+
+bool StandardSteadyClockResource::GetResetDetected() {
+    // TODO:
+    // call Rtc::GetRtcResetDetected(Max77620RtcSession)
+    // if detected:
+    //      SetSys::SetExternalSteadyClockSourceId(invalid_id)
+    //      Rtc::ClearRtcResetDetected(Max77620RtcSession)
+    // set m_rtc_reset to result
+    // Instead, only set reset to true if we're booting for the first time.
+    m_rtc_reset = false;
+    return m_rtc_reset;
+}
+
+Result StandardSteadyClockResource::SetCurrentTime() {
+    auto start_tick{m_system.CoreTiming().GetClockTicks()};
+
+    s64 rtc_time_s{};
+    // TODO R_TRY(Rtc::GetTimeInSeconds(rtc_time_s, Max77620RtcSession))
+    R_TRY(GetTimeInSeconds(m_system, rtc_time_s));
+
+    auto end_tick{m_system.CoreTiming().GetClockTicks()};
+    auto diff{Service::PSC::Time::ConvertToTimeSpan(end_tick - start_tick)};
+    // Why is this here?
+    R_UNLESS(diff < std::chrono::milliseconds(101), Service::PSC::Time::ResultRtcTimeout);
+
+    auto one_second_ns{
+        std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::seconds(1)).count()};
+    s64 boot_time{rtc_time_s * one_second_ns -
+                  Service::PSC::Time::ConvertToTimeSpan(end_tick).count()};
+
+    std::scoped_lock l{m_mutex};
+    m_time = boot_time;
+    R_SUCCEED();
+}
+
+Result StandardSteadyClockResource::GetRtcTimeInSeconds(s64& out_time) {
+    // TODO
+    // R_TRY(Rtc::GetTimeInSeconds(time_s, Max77620RtcSession)
+    R_RETURN(GetTimeInSeconds(m_system, out_time));
+}
+
+void StandardSteadyClockResource::UpdateTime() {
+    constexpr size_t NUM_TRIES{3};
+
+    size_t i{0};
+    Result res{ResultSuccess};
+    for (; i < NUM_TRIES; i++) {
+        res = SetCurrentTime();
+        if (res == ResultSuccess) {
+            break;
+        }
+        Kernel::Svc::SleepThread(m_system, std::chrono::duration_cast<std::chrono::nanoseconds>(
+                                               std::chrono::milliseconds(1))
+                                               .count());
+    }
+}
+
+} // namespace Service::Glue::Time