/* 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 */