include/linux/atmel-mci.h

   1 #ifndef __LINUX_ATMEL_MCI_H
   2 #define __LINUX_ATMEL_MCI_H
   3
   4 #define ATMCI_MAX_NR_SLOTS      2
   5
   6 /**
   7  * struct mci_slot_pdata - board-specific per-slot configuration
   8  * @bus_width: Number of data lines wired up the slot
   9  * @detect_pin: GPIO pin wired to the card detect switch
  10  * @wp_pin: GPIO pin wired to the write protect sensor
  11  * @detect_is_active_high: The state of the detect pin when it is active
  12  *
  13  * If a given slot is not present on the board, @bus_width should be
  14  * set to 0. The other fields are ignored in this case.
  15  *
  16  * Any pins that aren't available should be set to a negative value.
  17  *
  18  * Note that support for multiple slots is experimental -- some cards
  19  * might get upset if we don't get the clock management exactly right.
  20  * But in most cases, it should work just fine.
  21  */
  22 struct mci_slot_pdata {
  23         unsigned int            bus_width;
  24         int                     detect_pin;
  25         int                     wp_pin;
  26         bool                    detect_is_active_high;
  27 };
  28
  29 /**
  30  * struct mci_platform_data - board-specific MMC/SDcard configuration
  31  * @dma_slave: DMA slave interface to use in data transfers.
  32  * @slot: Per-slot configuration data.
  33  */
  34 struct mci_platform_data {
  35         struct mci_dma_data     *dma_slave;
  36         struct mci_slot_pdata   slot[ATMCI_MAX_NR_SLOTS];
  37 };
  38
  39 #endif /* __LINUX_ATMEL_MCI_H */