linux/drivers/mtd/spi-nor/controllers/nxp-spifi.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * SPI NOR driver for NXP SPI Flash Interface (SPIFI)
 *
 * Copyright (C) 2015 Joachim Eastwood <[email protected]>
 *
 * Based on Freescale QuadSPI driver:
 * Copyright (C) 2013 Freescale Semiconductor, Inc.
 */

#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/spi-nor.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>

/* NXP SPIFI registers, bits and macros */
#define SPIFI_CTRL …
#define SPIFI_CTRL_TIMEOUT(timeout) …
#define SPIFI_CTRL_CSHIGH(cshigh) …
#define SPIFI_CTRL_MODE3 …
#define SPIFI_CTRL_DUAL …
#define SPIFI_CTRL_FBCLK …
#define SPIFI_CMD …
#define SPIFI_CMD_DATALEN(dlen) …
#define SPIFI_CMD_DOUT …
#define SPIFI_CMD_INTLEN(ilen) …
#define SPIFI_CMD_FIELDFORM(field) …
#define SPIFI_CMD_FIELDFORM_ALL_SERIAL …
#define SPIFI_CMD_FIELDFORM_QUAD_DUAL_DATA …
#define SPIFI_CMD_FRAMEFORM(frame) …
#define SPIFI_CMD_FRAMEFORM_OPCODE_ONLY …
#define SPIFI_CMD_OPCODE(op) …
#define SPIFI_ADDR …
#define SPIFI_IDATA …
#define SPIFI_CLIMIT …
#define SPIFI_DATA …
#define SPIFI_MCMD …
#define SPIFI_STAT …
#define SPIFI_STAT_MCINIT …
#define SPIFI_STAT_CMD …
#define SPIFI_STAT_RESET …

#define SPI_NOR_MAX_ID_LEN …

struct nxp_spifi { … };

static int nxp_spifi_wait_for_cmd(struct nxp_spifi *spifi)
{ … }

static int nxp_spifi_reset(struct nxp_spifi *spifi)
{ … }

static int nxp_spifi_set_memory_mode_off(struct nxp_spifi *spifi)
{ … }

static int nxp_spifi_set_memory_mode_on(struct nxp_spifi *spifi)
{ … }

static int nxp_spifi_read_reg(struct spi_nor *nor, u8 opcode, u8 *buf,
			      size_t len)
{ … }

static int nxp_spifi_write_reg(struct spi_nor *nor, u8 opcode, const u8 *buf,
			       size_t len)
{ … }

static ssize_t nxp_spifi_read(struct spi_nor *nor, loff_t from, size_t len,
			      u_char *buf)
{ … }

static ssize_t nxp_spifi_write(struct spi_nor *nor, loff_t to, size_t len,
			       const u_char *buf)
{ … }

static int nxp_spifi_erase(struct spi_nor *nor, loff_t offs)
{ … }

static int nxp_spifi_setup_memory_cmd(struct nxp_spifi *spifi)
{ … }

static void nxp_spifi_dummy_id_read(struct spi_nor *nor)
{ … }

static const struct spi_nor_controller_ops nxp_spifi_controller_ops = …;

static int nxp_spifi_setup_flash(struct nxp_spifi *spifi,
				 struct device_node *np)
{ … }

static int nxp_spifi_probe(struct platform_device *pdev)
{ … }

static void nxp_spifi_remove(struct platform_device *pdev)
{ … }

static const struct of_device_id nxp_spifi_match[] = …;
MODULE_DEVICE_TABLE(of, nxp_spifi_match);

static struct platform_driver nxp_spifi_driver = …;
module_platform_driver(…) …;

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;