boot: refactor i2c driver into namespace

stratosphere/boot/source/i2c/driver/i2c_api.hpp

@@ -0,0 +1,50 @@
+/*
+ * 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_types.hpp"
+#include "../i2c_command_list.hpp"
+
+namespace sts::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();
+
+}