uart_imx.h

/*
 * Copyright (C) 2008-2009 Technische Universität Dresden.
 * Copyright (C) 2023-2024 Kernkonzept GmbH.
 * Author(s): Adam Lackorzynski <adam@os.inf.tu-dresden.de>
 *
 * License: see LICENSE.spdx (in this directory or the directories above)
 */
#pragma once
 
#include "uart_base.h"
 
namespace L4 {
 
class Uart_imx : public Uart
{
public:
  enum platform_type
  {
    Type_imx21,
    Type_imx35,
    Type_imx51,
    Type_imx6,
    Type_imx7,
    Type_imx8,
  };
  explicit Uart_imx(enum platform_type type) : _type(type) {}
  explicit Uart_imx(enum platform_type type, unsigned /*base_rate*/)
    : _type(type) {}
  bool startup(Io_register_block const *) override;
  void shutdown() override;
  bool change_mode(Transfer_mode m, Baud_rate r) override;
  int tx_avail() const;
  void wait_tx_done() const;
  inline void out_char(char c) const;
  int write(char const *s, unsigned long count,
            bool blocking = true) const override;
 
#ifndef UART_WITHOUT_INPUT
  bool enable_rx_irq(bool enable = true) override;
  int char_avail() const override;
  int get_char(bool blocking = true) const override;
#endif
 
private:
  enum platform_type _type;
};
 
class Uart_imx21 : public Uart_imx
{
public:
  Uart_imx21() : Uart_imx(Type_imx21) {}
  explicit Uart_imx21(unsigned base_rate) : Uart_imx(Type_imx21, base_rate) {}
};
 
class Uart_imx35 : public Uart_imx
{
public:
  Uart_imx35() : Uart_imx(Type_imx35) {}
  explicit Uart_imx35(unsigned base_rate) : Uart_imx(Type_imx35, base_rate) {}
};
 
class Uart_imx51 : public Uart_imx
{
public:
  Uart_imx51() : Uart_imx(Type_imx51) {}
  explicit Uart_imx51(unsigned base_rate) : Uart_imx(Type_imx51, base_rate) {}
};
 
class Uart_imx6 : public Uart_imx
{
public:
  Uart_imx6() : Uart_imx(Type_imx6) {}
  explicit Uart_imx6(unsigned base_rate) : Uart_imx(Type_imx6, base_rate) {}
 
#ifndef UART_WITHOUT_INPUT
  void irq_ack() override;
#endif
};
 
class Uart_imx7 : public Uart_imx
{
public:
  Uart_imx7() : Uart_imx(Type_imx7) {}
  explicit Uart_imx7(unsigned base_rate) : Uart_imx(Type_imx7, base_rate) {}
};
 
class Uart_imx8 : public Uart_imx
{
public:
  Uart_imx8() : Uart_imx(Type_imx8) {}
  explicit Uart_imx8(unsigned base_rate) : Uart_imx(Type_imx8, base_rate) {}
};
 
} // namespace L4