[mirror_ubuntu-bionic-kernel.git] / include / linux / atmel-mci.h

/* 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 */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
c42aa775 NF	2	#ifndef __LINUX_ATMEL_MCI_H
c42aa775 NF	3	#define __LINUX_ATMEL_MCI_H
7d2be074	4
8ca28610	5	#include <linux/types.h>
74843787	6	#include <linux/dmaengine.h>
8ca28610	7
2c96a293	8	#define ATMCI_MAX_NR_SLOTS 2
965ebf33	9
6b918657 HS	10	/**
	11	* struct mci_slot_pdata - board-specific per-slot configuration
	12	* @bus_width: Number of data lines wired up the slot
	13	* @detect_pin: GPIO pin wired to the card detect switch
	14	* @wp_pin: GPIO pin wired to the write protect sensor
1c1452be	15	* @detect_is_active_high: The state of the detect pin when it is active
76d55564	16	* @non_removable: The slot is not removable, only detect once
6b918657 HS	17	*
	18	* If a given slot is not present on the board, @bus_width should be
	19	* set to 0. The other fields are ignored in this case.
	20	*
	21	* Any pins that aren't available should be set to a negative value.
965ebf33 HS	22	*
	23	* Note that support for multiple slots is experimental -- some cards
	24	* might get upset if we don't get the clock management exactly right.
	25	* But in most cases, it should work just fine.
6b918657 HS	26	*/
	27	struct mci_slot_pdata {
	28	unsigned int bus_width;
7d2be074 HS	29	int detect_pin;
7d2be074 HS	30	int wp_pin;
1c1452be	31	bool detect_is_active_high;
76d55564	32	bool non_removable;
7d2be074 HS	33	};
7d2be074 HS	34
6b918657 HS	35	/**
6b918657 HS	36	* struct mci_platform_data - board-specific MMC/SDcard configuration
74465b4f	37	* @dma_slave: DMA slave interface to use in data transfers.
6b918657 HS	38	* @slot: Per-slot configuration data.
	39	*/
	40	struct mci_platform_data {
238d1c60	41	void *dma_slave;
74843787	42	dma_filter_fn dma_filter;
2c96a293	43	struct mci_slot_pdata slot[ATMCI_MAX_NR_SLOTS];
6b918657 HS	44	};
6b918657 HS	45
c42aa775	46	#endif /* __LINUX_ATMEL_MCI_H */