include/linux/atmel-mci.h

   1 #ifndef __LINUX_ATMEL_MCI_H
   2 #define __LINUX_ATMEL_MCI_H
   3
   4 #define ATMEL_MCI_MAX_NR_SLOTS  2
   5
   6 #include <linux/dw_dmac.h>
   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  *
  15  * If a given slot is not present on the board, @bus_width should be
  16  * set to 0. The other fields are ignored in this case.
  17  *
  18  * Any pins that aren't available should be set to a negative value.
  19  *
  20  * Note that support for multiple slots is experimental -- some cards
  21  * might get upset if we don't get the clock management exactly right.
  22  * But in most cases, it should work just fine.
  23  */
  24 struct mci_slot_pdata {
  25         unsigned int            bus_width;
  26         int                     detect_pin;
  27         int                     wp_pin;
  28         bool                    detect_is_active_high;
  29 };
  30
  31 /**
  32  * struct mci_platform_data - board-specific MMC/SDcard configuration
  33  * @dma_slave: DMA slave interface to use in data transfers.
  34  * @slot: Per-slot configuration data.
  35  */
  36 struct mci_platform_data {
  37         struct dw_dma_slave     dma_slave;
  38         struct mci_slot_pdata   slot[ATMEL_MCI_MAX_NR_SLOTS];
  39 };
  40
  41 #endif /* __LINUX_ATMEL_MCI_H */