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kernel/linux-rt-4.4.41/include/linux/amba/mmci.h 1.21 KB
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  /*
   *  include/linux/amba/mmci.h
   */
  #ifndef AMBA_MMCI_H
  #define AMBA_MMCI_H
  
  #include <linux/mmc/host.h>
  
  /**
   * struct mmci_platform_data - platform configuration for the MMCI
   * (also known as PL180) block.
   * @ocr_mask: available voltages on the 4 pins from the block, this
   * is ignored if a regulator is used, see the MMC_VDD_* masks in
   * mmc/host.h
   * @ios_handler: a callback function to act on specfic ios changes,
   * used for example to control a levelshifter
   * mask into a value to be binary (or set some other custom bits
   * in MMCIPWR) or:ed and written into the MMCIPWR register of the
   * block.  May also control external power based on the power_mode.
   * @status: if no GPIO read function was given to the block in
   * gpio_wp (below) this function will be called to determine
   * whether a card is present in the MMC slot or not
   * @gpio_wp: read this GPIO pin to see if the card is write protected
   * @gpio_cd: read this GPIO pin to detect card insertion
   * @cd_invert: true if the gpio_cd pin value is active low
   */
  struct mmci_platform_data {
  	unsigned int ocr_mask;
  	int (*ios_handler)(struct device *, struct mmc_ios *);
  	unsigned int (*status)(struct device *);
  	int	gpio_wp;
  	int	gpio_cd;
  	bool	cd_invert;
  };
  
  #endif