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kernel/linux-imx6_3.14.28/include/linux/i2c/pmbus.h 1.49 KB
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  /*
   * Hardware monitoring driver for PMBus devices
   *
   * Copyright (c) 2010, 2011 Ericsson AB.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that 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, write to the Free Software
   * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   */
  
  #ifndef _PMBUS_H_
  #define _PMBUS_H_
  
  /* flags */
  
  /*
   * PMBUS_SKIP_STATUS_CHECK
   *
   * During register detection, skip checking the status register for
   * communication or command errors.
   *
   * Some PMBus chips respond with valid data when trying to read an unsupported
   * register. For such chips, checking the status register is mandatory when
   * trying to determine if a chip register exists or not.
   * Other PMBus chips don't support the STATUS_CML register, or report
   * communication errors for no explicable reason. For such chips, checking
   * the status register must be disabled.
   */
  #define PMBUS_SKIP_STATUS_CHECK	(1 << 0)
  
  struct pmbus_platform_data {
  	u32 flags;		/* Device specific flags */
  };
  
  #endif /* _PMBUS_H_ */