include/sound/wcd-spi.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
 */

#ifndef __WCD_SPI_H__
#define __WCD_SPI_H__

#include <linux/types.h>

struct wcd_spi_msg {
	/*
	 * Caller's buffer pointer that holds data to
	 * be transmitted in case of data_write and
	 * data to be copied to in case of data_read.
	 */
	void *data;

	/* Length of data to write/read */
	size_t len;

	/*
	 * Address in remote memory to write to
	 * or read from.
	 */
	u32 remote_addr;

	/* Bitmask of flags, currently unused */
	u32 flags;
};

struct wcd_spi_ops {
	struct spi_device *spi_dev;
	int (*read_dev)(struct spi_device *spi, struct wcd_spi_msg *msg);
	int (*write_dev)(struct spi_device *spi, struct wcd_spi_msg *msg);
};

#endif /* End of __WCD_SPI_H__ */