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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Header File for Altera SPI Driver.
*/
#ifndef __LINUX_SPI_ALTERA_H
#define __LINUX_SPI_ALTERA_H
#include <linux/interrupt.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>
#include <linux/types.h>
#define ALTERA_SPI_MAX_CS 32
/**
* struct altera_spi_platform_data - Platform data of the Altera SPI driver
* @mode_bits: Mode bits of SPI master.
* @num_chipselect: Number of chipselects.
* @bits_per_word_mask: bitmask of supported bits_per_word for transfers.
* @num_devices: Number of devices that shall be added when the driver
* is probed.
* @devices: The devices to add.
*/
struct altera_spi_platform_data {
u16 mode_bits;
u16 num_chipselect;
u32 bits_per_word_mask;
u16 num_devices;
struct spi_board_info *devices;
};
struct altera_spi {
int irq;
int len;
int count;
int bytes_per_word;
u32 imr;
/* data buffers */
const unsigned char *tx;
unsigned char *rx;
struct regmap *regmap;
u32 regoff;
struct device *dev;
};
extern irqreturn_t altera_spi_irq(int irq, void *dev);
extern void altera_spi_init_master(struct spi_master *master);
#endif /* __LINUX_SPI_ALTERA_H */