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kernel/linux-rt-4.4.41/include/linux/platform_data/mmc-s3cmci.h 2 KB
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  #ifndef _ARCH_MCI_H
  #define _ARCH_MCI_H
  
  /**
   * struct s3c24xx_mci_pdata - sd/mmc controller platform data
   * @no_wprotect: Set this to indicate there is no write-protect switch.
   * @no_detect: Set this if there is no detect switch.
   * @wprotect_invert: Invert the default sense of the write protect switch.
   * @detect_invert: Invert the default sense of the write protect switch.
   * @use_dma: Set to allow the use of DMA.
   * @gpio_detect: GPIO number for the card detect line.
   * @gpio_wprotect: GPIO number for the write protect line.
   * @ocr_avail: The mask of the available power states, non-zero to use.
   * @set_power: Callback to control the power mode.
   *
   * The @gpio_detect is used for card detection when @no_wprotect is unset,
   * and the default sense is that 0 returned from gpio_get_value() means
   * that a card is inserted. If @detect_invert is set, then the value from
   * gpio_get_value() is inverted, which makes 1 mean card inserted.
   *
   * The driver will use @gpio_wprotect to signal whether the card is write
   * protected if @no_wprotect is not set. A 0 returned from gpio_get_value()
   * means the card is read/write, and 1 means read-only. The @wprotect_invert
   * will invert the value returned from gpio_get_value().
   *
   * Card power is set by @ocr_availa, using MCC_VDD_ constants if it is set
   * to a non-zero value, otherwise the default of 3.2-3.4V is used.
   */
  struct s3c24xx_mci_pdata {
  	unsigned int	no_wprotect:1;
  	unsigned int	no_detect:1;
  	unsigned int	wprotect_invert:1;
  	unsigned int	detect_invert:1;	/* set => detect active high */
  	unsigned int	use_dma:1;
  
  	unsigned int	gpio_detect;
  	unsigned int	gpio_wprotect;
  	unsigned long	ocr_avail;
  	void		(*set_power)(unsigned char power_mode,
  				     unsigned short vdd);
  };
  
  /**
   * s3c24xx_mci_set_platdata - set platform data for mmc/sdi device
   * @pdata: The platform data
   *
   * Copy the platform data supplied by @pdata so that this can be marked
   * __initdata.
   */
  extern void s3c24xx_mci_set_platdata(struct s3c24xx_mci_pdata *pdata);
  
  #endif /* _ARCH_NCI_H */