release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/plat-s3c24xx/include/plat/mci.h

   1 #ifndef _ARCH_MCI_H
   2 #define _ARCH_MCI_H
   3
   4 /**
   5  * struct s3c24xx_mci_pdata - sd/mmc controller platform data
   6  * @no_wprotect: Set this to indicate there is no write-protect switch.
   7  * @no_detect: Set this if there is no detect switch.
   8  * @wprotect_invert: Invert the default sense of the write protect switch.
   9  * @detect_invert: Invert the default sense of the write protect switch.
  10  * @use_dma: Set to allow the use of DMA.
  11  * @gpio_detect: GPIO number for the card detect line.
  12  * @gpio_wprotect: GPIO number for the write protect line.
  13  * @ocr_avail: The mask of the available power states, non-zero to use.
  14  * @set_power: Callback to control the power mode.
  15  *
  16  * The @gpio_detect is used for card detection when @no_wprotect is unset,
  17  * and the default sense is that 0 returned from gpio_get_value() means
  18  * that a card is inserted. If @detect_invert is set, then the value from
  19  * gpio_get_value() is inverted, which makes 1 mean card inserted.
  20  *
  21  * The driver will use @gpio_wprotect to signal whether the card is write
  22  * protected if @no_wprotect is not set. A 0 returned from gpio_get_value()
  23  * means the card is read/write, and 1 means read-only. The @wprotect_invert
  24  * will invert the value returned from gpio_get_value().
  25  *
  26  * Card power is set by @ocr_availa, using MCC_VDD_ constants if it is set
  27  * to a non-zero value, otherwise the default of 3.2-3.4V is used.
  28  */
  29 struct s3c24xx_mci_pdata {
  30         unsigned int    no_wprotect : 1;
  31         unsigned int    no_detect : 1;
  32         unsigned int    wprotect_invert : 1;
  33         unsigned int    detect_invert : 1;   /* set => detect active high. */
  34         unsigned int    use_dma : 1;
  35
  36         unsigned int    gpio_detect;
  37         unsigned int    gpio_wprotect;
  38         unsigned long   ocr_avail;
  39         void            (*set_power)(unsigned char power_mode,
  40                                      unsigned short vdd);
  41 };
  42
  43 /**
  44  * s3c24xx_mci_set_platdata - set platform data for mmc/sdi device
  45  * @pdata: The platform data
  46  *
  47  * Copy the platform data supplied by @pdata so that this can be marked
  48  * __initdata.
  49  */
  50 extern void s3c24xx_mci_set_platdata(struct s3c24xx_mci_pdata *pdata);
  51
  52 #endif /* _ARCH_NCI_H */