1 files changed, 67 insertions, 0 deletions
diff --git a/src/drivers/include/display.hpp b/src/drivers/include/display.hpp
new file mode 100644
index 00000000..2d6e9cd6
--- /dev/null
+++ b/src/drivers/include/display.hpp
@@ -0,0 +1,67 @@
+#pragma once
+
+#include <cstdint>
+#include "display-init.hpp"
+#include "driver/spi_master.h"
+#include "gpio-expander.hpp"
+#include "lvgl/lvgl.h"
+#include "result.hpp"
+
+namespace gay_ipod {
+
+/*
+ * Display driver for LVGL.
+ */
+class Display {
+ public:
+  enum Error {};
+  static auto create(GpioExpander* expander,
+                     const displays::InitialisationData& init_data)
+      -> cpp::result<std::unique_ptr<Display>, Error>;
+
+  Display(GpioExpander* gpio, spi_device_handle_t handle);
+  ~Display();
+
+  void WriteData();
+
+  void Flush(lv_disp_drv_t* disp_drv,
+             const lv_area_t* area,
+             lv_color_t* color_map);
+
+  void IRAM_ATTR PostTransaction(const spi_transaction_t& transaction);
+
+  void ServiceTransactions();
+
+ private:
+  GpioExpander* gpio_;
+  spi_device_handle_t handle_;
+
+  lv_disp_draw_buf_t buffers_;
+  lv_disp_drv_t driver_;
+  lv_disp_t* display_ = nullptr;
+
+  enum TransactionType {
+    COMMAND = 0,
+    DATA = 1,
+  };
+
+  enum TransactionFlags {
+    LVGL_FLUSH = 1,
+  };
+
+  void SendInitialisationSequence(const uint8_t* data);
+
+  void SendCommandWithData(uint8_t command,
+                           const uint8_t* data,
+                           size_t length,
+                           uintptr_t flags = 0);
+
+  void SendCmd(const uint8_t* data, size_t length, uintptr_t flags = 0);
+  void SendData(const uint8_t* data, size_t length, uintptr_t flags = 0);
+  void SendTransaction(TransactionType type,
+                       const uint8_t* data,
+                       size_t length,
+                       uintptr_t flags = 0);
+};
+
+}  // namespace gay_ipod