/*
   *  include/linux/amba/mmci.h
   */
  #ifndef AMBA_MMCI_H
  #define AMBA_MMCI_H
  
  #include <linux/mmc/host.h>
  
  
  /*
   * These defines is places here due to access is needed from machine
   * configuration files. The ST Micro version does not have ROD and
   * reuse the voltage registers for direction settings.
   */
  #define MCI_ST_DATA2DIREN	(1 << 2)
  #define MCI_ST_CMDDIREN		(1 << 3)
  #define MCI_ST_DATA0DIREN	(1 << 4)
  #define MCI_ST_DATA31DIREN	(1 << 5)
  #define MCI_ST_FBCLKEN		(1 << 7)
  #define MCI_ST_DATA74DIREN	(1 << 8)
  
  /* Just some dummy forwarding */
  struct dma_chan;
  
  /**
   * struct mmci_platform_data - platform configuration for the MMCI
   * (also known as PL180) block.
   * @f_max: the maximum operational frequency for this host in this
   * platform configuration. When this is specified it takes precedence
   * over the module parameter for the same frequency.
   * @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
   * @capabilities: the capabilities of the block as implemented in
   * this platform, signify anything MMC_CAP_* from mmc/host.h
   * @capabilities2: more capabilities, MMC_CAP2_* from mmc/host.h
   * @sigdir: a bit field indicating for what bits in the MMC bus the host
   * should enable signal direction indication.
   * @dma_filter: function used to select an appropriate RX and TX
   * DMA channel to be used for DMA, if and only if you're deploying the
   * generic DMA engine
   * @dma_rx_param: parameter passed to the DMA allocation
   * filter in order to select an appropriate RX channel. If
   * there is a bidirectional RX+TX channel, then just specify
   * this and leave dma_tx_param set to NULL
   * @dma_tx_param: parameter passed to the DMA allocation
   * filter in order to select an appropriate TX channel. If this
   * is NULL the driver will attempt to use the RX channel as a
   * bidirectional channel
   */
  struct mmci_platform_data {
  	unsigned int f_max;
  	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;
  	unsigned long capabilities;
  	unsigned long capabilities2;
  	u32 sigdir;
  	bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
  	void *dma_rx_param;
  	void *dma_tx_param;
  };
  
  #endif