LXR linux/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 */
  24struct 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 */
  36struct 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 */
  42