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