92 lines
3.7 KiB
C
92 lines
3.7 KiB
C
/*
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* Copyright (c) 1986 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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/*
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* Ioctl definitions for SPI driver.
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*/
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#ifndef _SPI_H
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#define _SPI_H
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#include <sys/ioctl.h>
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/*
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* User-level interface to the SPI port.
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*/
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#define SPICTL_SETMODE _IO ('p', 0) /* set SPI mode */
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#define SPICTL_SETRATE _IO ('p', 1) /* set clock rate, kHz */
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#define SPICTL_SETSELPIN _IO ('p', 2) /* set select pin */
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#define SPICTL_IO8(n) _ION('p', 3, n) /* transfer n*8 bits */
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#define SPICTL_IO16(n) _ION('p', 4, n) /* transfer n*16 bits */
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#define SPICTL_IO32(n) _ION('p', 5, n) /* transfer n*32 bits */
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#define SPICTL_IO8R(n) _ION('p', 6, n) /* transfer R n*8 bits */
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#define SPICTL_IO16R(n) _ION('p', 7, n) /* transfer R n*16 bits */
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#define SPICTL_IO32R(n) _ION('p', 8, n) /* transfer R n*32 bits */
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#define SPICTL_IO8W(n) _ION('p', 9, n) /* transfer W n*8 bits */
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#define SPICTL_IO16W(n) _ION('p', 10, n) /* transfer W n*16 bits */
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#define SPICTL_IO32W(n) _ION('p', 11, n) /* transfer W n*32 bits */
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#define SPICTL_IO32B(n) _ION('p', 12, n) /* transfer BE n*32 bits */
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#define SPICTL_IO32RB(n) _ION('p', 13, n) /* transfer RBE n*32 bits */
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#define SPICTL_IO32WB(n) _ION('p', 14, n) /* transfer WBE n*32 bits */
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#ifdef KERNEL
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#include "conf.h"
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/*
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* Kernel-level interface to the SPI port.
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*/
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struct spiio {
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struct spireg *bus;
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unsigned int *cs_tris;
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unsigned int cs_pin;
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unsigned int baud;
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unsigned int mode;
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};
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extern int spi_setup(struct spiio *io, int channel, unsigned int *tris, unsigned int pin);
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extern void spi_set_cspin(struct spiio *io, unsigned int *tris, unsigned int pin);
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extern void spi_select(struct spiio *io);
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extern void spi_deselect(struct spiio *io);
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extern void spi_set(struct spiio *io, unsigned int set);
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extern void spi_clr(struct spiio *io, unsigned int set);
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extern unsigned int spi_status(struct spiio *io);
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extern unsigned char spi_transfer(struct spiio *io, unsigned char data);
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extern void spi_bulk_write_32_be(struct spiio *io, unsigned int len, char *data);
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extern void spi_bulk_write_32(struct spiio *io, unsigned int len, char *data);
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extern void spi_bulk_write_16(struct spiio *io, unsigned int len, char *data);
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extern void spi_bulk_write(struct spiio *io, unsigned int len, unsigned char *data);
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extern void spi_bulk_read_32_be(struct spiio *io, unsigned int len, char *data);
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extern void spi_bulk_read_32(struct spiio *io, unsigned int len, char *data);
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extern void spi_bulk_read_16(struct spiio *io, unsigned int len, char *data);
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extern void spi_bulk_read(struct spiio *io, unsigned int len, unsigned char *data);
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extern void spi_bulk_rw_32_be(struct spiio *io, unsigned int len, char *data);
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extern void spi_bulk_rw_32(struct spiio *io, unsigned int len, char *data);
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extern void spi_bulk_rw_16(struct spiio *io, unsigned int len, char *data);
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extern void spi_bulk_rw(struct spiio *io, unsigned int len, unsigned char *data);
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extern void spi_brg(struct spiio *io, unsigned int baud);
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extern char *spi_name(struct spiio *io);
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extern char spi_csname(struct spiio *io);
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extern int spi_cspin(struct spiio *io);
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extern unsigned int spi_get_brg(struct spiio *io);
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/*
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* Routines of the SPI device driver.
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*/
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int spidev_open (dev_t dev, int flag, int mode);
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int spidev_close (dev_t dev, int flag, int mode);
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int spidev_read (dev_t dev, struct uio *uio, int flag);
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int spidev_write (dev_t dev, struct uio *uio, int flag);
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int spidev_ioctl (dev_t dev, u_int cmd, caddr_t addr, int flag);
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extern const struct devspec spidevs[];
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#endif
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#endif
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