include/linux/atmel-mci.h

   1 #ifndef __LINUX_ATMEL_MCI_H
   2 #define __LINUX_ATMEL_MCI_H
   3
   4 #include <linux/types.h>
   5 #include <linux/dmaengine.h>
   6
   7 #define ATMCI_MAX_NR_SLOTS      2
   8
   9 /**
  10  * struct mci_slot_pdata - board-specific per-slot configuration
  11  * @bus_width: Number of data lines wired up the slot
  12  * @detect_pin: GPIO pin wired to the card detect switch
  13  * @wp_pin: GPIO pin wired to the write protect sensor
  14  * @detect_is_active_high: The state of the detect pin when it is active
  15  * @non_removable: The slot is not removable, only detect once
  16  *
  17  * If a given slot is not present on the board, @bus_width should be
  18  * set to 0. The other fields are ignored in this case.
  19  *
  20  * Any pins that aren't available should be set to a negative value.
  21  *
  22  * Note that support for multiple slots is experimental -- some cards
  23  * might get upset if we don't get the clock management exactly right.
  24  * But in most cases, it should work just fine.
  25  */
  26 struct mci_slot_pdata {
  27         unsigned int            bus_width;
  28         int                     detect_pin;
  29         int                     wp_pin;
  30         bool                    detect_is_active_high;
  31         bool                    non_removable;
  32 };
  33
  34 /**
  35  * struct mci_platform_data - board-specific MMC/SDcard configuration
  36  * @dma_slave: DMA slave interface to use in data transfers.
  37  * @slot: Per-slot configuration data.
  38  */
  39 struct mci_platform_data {
  40         void                    *dma_slave;
  41         dma_filter_fn           dma_filter;
  42         struct mci_slot_pdata   slot[ATMCI_MAX_NR_SLOTS];
  43 };
  44
  45 #endif /* __LINUX_ATMEL_MCI_H */