include/linux/atmel-mci.h

   1 #ifndef __LINUX_ATMEL_MCI_H
   2 #define __LINUX_ATMEL_MCI_H
   3
   4 #include <linux/types.h>
   5
   6 #define ATMCI_MAX_NR_SLOTS      2
   7
   8 /**
   9  * struct mci_slot_pdata - board-specific per-slot configuration
  10  * @bus_width: Number of data lines wired up the slot
  11  * @detect_pin: GPIO pin wired to the card detect switch
  12  * @wp_pin: GPIO pin wired to the write protect sensor
  13  * @detect_is_active_high: The state of the detect pin when it is active
  14  * @non_removable: The slot is not removable, only detect once
  15  *
  16  * If a given slot is not present on the board, @bus_width should be
  17  * set to 0. The other fields are ignored in this case.
  18  *
  19  * Any pins that aren't available should be set to a negative value.
  20  *
  21  * Note that support for multiple slots is experimental -- some cards
  22  * might get upset if we don't get the clock management exactly right.
  23  * But in most cases, it should work just fine.
  24  */
  25 struct mci_slot_pdata {
  26         unsigned int            bus_width;
  27         int                     detect_pin;
  28         int                     wp_pin;
  29         bool                    detect_is_active_high;
  30         bool                    non_removable;
  31 };
  32
  33 /**
  34  * struct mci_platform_data - board-specific MMC/SDcard configuration
  35  * @dma_slave: DMA slave interface to use in data transfers.
  36  * @slot: Per-slot configuration data.
  37  */
  38 struct mci_platform_data {
  39         struct mci_dma_data     *dma_slave;
  40         struct mci_slot_pdata   slot[ATMCI_MAX_NR_SLOTS];
  41 };
  42
  43 #endif /* __LINUX_ATMEL_MCI_H */