linux/drivers/spi/spi-altera-dfl.c

// SPDX-License-Identifier: GPL-2.0
//
// DFL bus driver for Altera SPI Master
//
// Copyright (C) 2020 Intel Corporation, Inc.
//
// Authors:
//   Matthew Gerlach <[email protected]>
//

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/stddef.h>
#include <linux/errno.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/bitfield.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>
#include <linux/spi/altera.h>
#include <linux/dfl.h>

#define FME_FEATURE_ID_MAX10_SPI …
#define FME_FEATURE_REV_MAX10_SPI_N5010 …

#define SPI_CORE_PARAMETER …
#define SHIFT_MODE …
#define SHIFT_MODE_MSB …
#define SHIFT_MODE_LSB …
#define DATA_WIDTH …
#define NUM_CHIPSELECT …
#define CLK_POLARITY …
#define CLK_PHASE …
#define PERIPHERAL_ID …
#define SPI_CLK …
#define SPI_INDIRECT_ACC_OFST …

#define INDIRECT_ADDR …
#define INDIRECT_WR …
#define INDIRECT_RD …
#define INDIRECT_RD_DATA …
#define INDIRECT_DATA_MASK …
#define INDIRECT_DEBUG …
#define INDIRECT_WR_DATA …
#define INDIRECT_TIMEOUT …

static int indirect_bus_reg_read(void *context, unsigned int reg,
				 unsigned int *val)
{ … }

static int indirect_bus_reg_write(void *context, unsigned int reg,
				  unsigned int val)
{ … }

static const struct regmap_config indirect_regbus_cfg = …;

static void config_spi_host(void __iomem *base, struct spi_controller *host)
{ … }

static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
{ … }

static const struct dfl_device_id dfl_spi_altera_ids[] = …;

static struct dfl_driver dfl_spi_altera_driver = …;

module_dfl_driver(…) …;

MODULE_DEVICE_TABLE(dfl, dfl_spi_altera_ids);
MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;