linux_spi.c File Reference

Implementation of Linux platform SPI Driver. More...

#include "no_os_error.h"
#include "no_os_spi.h"
#include "no_os_alloc.h"
#include "linux_spi.h"
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <linux/spi/spidev.h>

Include dependency graph for linux_spi.c:

Classes
struct	linux_spi_desc
	Linux platform specific SPI descriptor. More...

Functions
int32_t	linux_spi_init (struct no_os_spi_desc **desc, const struct no_os_spi_init_param *param)
	Initialize the SPI communication peripheral.
int32_t	linux_spi_write_and_read (struct no_os_spi_desc *desc, uint8_t *data, uint16_t bytes_number)
	Write and read data to/from SPI.
int32_t	linux_spi_remove (struct no_os_spi_desc *desc)
	Free the resources allocated by linux_spi_init().

Variables
const struct no_os_spi_platform_ops	linux_spi_ops
	Linux platform specific SPI platform ops structure.

Detailed Description

Implementation of Linux platform SPI Driver.

Author

Dragos Bogdan (drago.nosp@m.s.bo.nosp@m.gdan@.nosp@m.anal.nosp@m.og.co.nosp@m.m)

Copyright 2020(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Function Documentation

linux_spi_init()

int32_t linux_spi_init	(	struct no_os_spi_desc **	desc,
		const struct no_os_spi_init_param *	param )

Initialize the SPI communication peripheral.

Parameters

desc	- The SPI descriptor.
param	- The structure that contains the SPI parameters.

Returns

0 in case of success, -1 otherwise.

linux_spi_remove()

int32_t linux_spi_remove

(

struct no_os_spi_desc *

desc

)

Free the resources allocated by linux_spi_init().

Parameters

desc	- The SPI descriptor.

Returns

0 in case of success, -1 otherwise.

linux_spi_write_and_read()

int32_t linux_spi_write_and_read	(	struct no_os_spi_desc *	desc,
		uint8_t *	data,
		uint16_t	bytes_number )

Write and read data to/from SPI.

Parameters

desc	- The SPI descriptor.
data	- The buffer with the transmitted/received data.
bytes_number	- Number of bytes to write/read.

Returns

0 in case of success, -1 otherwise.

Variable Documentation

linux_spi_ops

const struct no_os_spi_platform_ops linux_spi_ops

Initial value:

= {
    .init = &linux_spi_init,
    .write_and_read = &linux_spi_write_and_read,
    .remove = &linux_spi_remove,
    .transfer = &linux_spi_transfer
}

Linux platform specific SPI platform ops structure.

Linux specific SPI platform ops structure.