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kernel/linux-rt-4.4.41/include/linux/platform_data/ad5449.h 1.16 KB
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  /*
   * AD5415, AD5426, AD5429, AD5432, AD5439, AD5443, AD5449 Digital to Analog
   * Converter driver.
   *
   * Copyright 2012 Analog Devices Inc.
   *  Author: Lars-Peter Clausen <lars@metafoo.de>
   *
   * Licensed under the GPL-2.
   */
  
  #ifndef __LINUX_PLATFORM_DATA_AD5449_H__
  #define __LINUX_PLATFORM_DATA_AD5449_H__
  
  /**
   * enum ad5449_sdo_mode - AD5449 SDO pin configuration
   * @AD5449_SDO_DRIVE_FULL: Drive the SDO pin with full strength.
   * @AD5449_SDO_DRIVE_WEAK: Drive the SDO pin with not full strength.
   * @AD5449_SDO_OPEN_DRAIN: Operate the SDO pin in open-drain mode.
   * @AD5449_SDO_DISABLED: Disable the SDO pin, in this mode it is not possible to
   *			read back from the device.
   */
  enum ad5449_sdo_mode {
  	AD5449_SDO_DRIVE_FULL = 0x0,
  	AD5449_SDO_DRIVE_WEAK = 0x1,
  	AD5449_SDO_OPEN_DRAIN = 0x2,
  	AD5449_SDO_DISABLED = 0x3,
  };
  
  /**
   * struct ad5449_platform_data - Platform data for the ad5449 DAC driver
   * @sdo_mode: SDO pin mode
   * @hardware_clear_to_midscale: Whether asserting the hardware CLR pin sets the
   *			outputs to midscale (true) or to zero scale(false).
   */
  struct ad5449_platform_data {
  	enum ad5449_sdo_mode sdo_mode;
  	bool hardware_clear_to_midscale;
  };
  
  #endif