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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_ATMEL_MCI_H
#define __LINUX_ATMEL_MCI_H
#include <linux/types.h>
#include <linux/dmaengine.h>
#define ATMCI_MAX_NR_SLOTS 2
/**
* struct mci_slot_pdata - board-specific per-slot configuration
* @bus_width: Number of data lines wired up the slot
* @detect_pin: GPIO pin wired to the card detect switch
* @wp_pin: GPIO pin wired to the write protect sensor
* @detect_is_active_high: The state of the detect pin when it is active
* @non_removable: The slot is not removable, only detect once
*
* If a given slot is not present on the board, @bus_width should be
* set to 0. The other fields are ignored in this case.
*
* Any pins that aren't available should be set to a negative value.
*
* Note that support for multiple slots is experimental -- some cards
* might get upset if we don't get the clock management exactly right.
* But in most cases, it should work just fine.
*/
struct mci_slot_pdata {
unsigned int bus_width;
int detect_pin;
int wp_pin;
bool detect_is_active_high;
bool non_removable;
};
/**
* struct mci_platform_data - board-specific MMC/SDcard configuration
* @dma_slave: DMA slave interface to use in data transfers.
* @slot: Per-slot configuration data.
*/
struct mci_platform_data {
void *dma_slave;
dma_filter_fn dma_filter;
struct mci_slot_pdata slot[ATMCI_MAX_NR_SLOTS];
};
#endif /* __LINUX_ATMEL_MCI_H */