Eric Lee / smarc-uboot

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include/smsc_sio1007.h 3.07 KB
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d41ce506b   Eric Lee   Initial Release, ... 
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  /*
   * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #ifndef _SMSC_SIO1007_H_
  #define _SMSC_SIO1007_H_
  
  /*
   * The I/O base address of SIO1007 at power-up is determined by the SYSOPT0
   * and SYSOPT1 pins at the deasserting edge of PCIRST#. The combination of
   * SYSOPT0 and SYSOPT1 determines one of the following addresses.
   */
  #define SIO1007_IOPORT0		0x002e
  #define SIO1007_IOPORT1		0x004e
  #define SIO1007_IOPORT2		0x162e
  #define SIO1007_IOPORT3		0x164e
  
  /* SIO1007 registers */
  
  #define DEV_POWER_CTRL		0x02
  #define UART1_POWER_ON		(1 << 3)
  #define UART2_POWER_ON		(1 << 7)
  
  #define UART1_IOBASE		0x24
  #define UART2_IOBASE		0x25
  #define UART_IRQ		0x28
  
  #define RTR_IOBASE_HIGH		0x21
  #define RTR_IOBASE_LOW		0x30
  
  #define GPIO0_DIR		0x31
  #define GPIO1_DIR		0x35
  #define GPIO_DIR_INPUT		0
  #define GPIO_DIR_OUTPUT		1
  
  #define GPIO0_POL		0x32
  #define GPIO1_POL		0x36
  #define GPIO_POL_NO_INVERT	0
  #define GPIO_POL_INVERT		1
  
  #define GPIO0_TYPE		0x33
  #define GPIO1_TYPE		0x37
  #define GPIO_TYPE_PUSH_PULL	0
  #define GPIO_TYPE_OPEN_DRAIN	1
  
  #define DEV_ACTIVATE		0x3a
  #define RTR_EN			(1 << 1)
  
  /* Runtime register offset */
  
  #define GPIO0_DATA		0xc
  #define GPIO1_DATA		0xe
  
  /* Number of serial ports supported */
  #define SIO1007_UART_NUM	2
  
  /* Number of gpio pins supported */
  #define GPIO_NUM_PER_GROUP	8
  #define GPIO_GROUP_NUM		2
  #define SIO1007_GPIO_NUM	(GPIO_NUM_PER_GROUP * GPIO_GROUP_NUM)
  
  /**
   * Configure the I/O port address of the specified serial device and
   * enable the serial device.
   *
   * @port:	SIO1007 I/O port address
   * @num:	serial device number (0 or 1)
   * @iobase:	processor I/O port address to assign to this serial device
   * @irq:	processor IRQ number to assign to this serial device
   */
  void sio1007_enable_serial(int port, int num, int iobase, int irq);
  
  /**
   * Configure the I/O port address of the runtime register block and
   * enable the address decoding.
   *
   * @port:	SIO1007 I/O port address
   * @iobase:	processor I/O port address to assign to the runtime registers
   */
  void sio1007_enable_runtime(int port, int iobase);
  
  /**
   * Configure the direction/polority/type of a specified GPIO pin
   *
   * @port:	SIO1007 I/O port address
   * @gpio:	GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37)
   * @dir:	GPIO_DIR_INPUT or GPIO_DIR_OUTPUT
   * @pol:	GPIO_POL_NO_INVERT or GPIO_POL_INVERT
   * @type:	GPIO_TYPE_PUSH_PULL or GPIO_TYPE_OPEN_DRAIN
   */
  void sio1007_gpio_config(int port, int gpio, int dir, int pol, int type);
  
  /**
   * Get a GPIO pin value.
   * This will work whether the GPIO is an input or an output.
   *
   * @port:	runtime register block I/O port address
   * @gpio:	GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37)
   * @return:	0 if low, 1 if high, -EINVAL if gpio number is invalid
   */
  int sio1007_gpio_get_value(int port, int gpio);
  
  /**
   * Set a GPIO pin value.
   * This will only work when the GPIO is configured as an output.
   *
   * @port:	runtime register block I/O port address
   * @gpio:	GPIO number (0-7 for GP10-GP17, 8-15 for GP30-GP37)
   * @val:	0 if low, 1 if high
   */
  void sio1007_gpio_set_value(int port, int gpio, int val);
  
  #endif /* _SMSC_SIO1007_H_ */