tegrakernel/kernel/kernel-4.9/arch/sh/include/asm/spi.h

#ifndef __ASM_SPI_H__
#define __ASM_SPI_H__

struct sh_spi_info;

struct sh_spi_info {
	int			 bus_num;
	int			 num_chipselect;

	void (*chip_select)(struct sh_spi_info *spi, int cs, int state);
};

#endif /* __ASM_SPI_H__ */