linux/drivers/nvmem/vf610-ocotp.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2015 Toradex AG.
 *
 * Author: Sanchayan Maity <[email protected]>
 *
 * Based on the barebox ocotp driver,
 * Copyright (c) 2010 Baruch Siach <[email protected]>
 *	Orex Computed Radiography
 */

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/nvmem-provider.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>

/* OCOTP Register Offsets */
#define OCOTP_CTRL_REG …
#define OCOTP_CTRL_SET …
#define OCOTP_CTRL_CLR …
#define OCOTP_TIMING …
#define OCOTP_DATA …
#define OCOTP_READ_CTRL_REG …
#define OCOTP_READ_FUSE_DATA …

/* OCOTP Register bits and masks */
#define OCOTP_CTRL_WR_UNLOCK …
#define OCOTP_CTRL_WR_UNLOCK_KEY …
#define OCOTP_CTRL_WR_UNLOCK_MASK …
#define OCOTP_CTRL_ADDR …
#define OCOTP_CTRL_ADDR_MASK …
#define OCOTP_CTRL_RELOAD_SHADOWS …
#define OCOTP_CTRL_ERR …
#define OCOTP_CTRL_BUSY …

#define OCOTP_TIMING_STROBE_READ …
#define OCOTP_TIMING_STROBE_READ_MASK …
#define OCOTP_TIMING_RELAX …
#define OCOTP_TIMING_RELAX_MASK …
#define OCOTP_TIMING_STROBE_PROG …
#define OCOTP_TIMING_STROBE_PROG_MASK …

#define OCOTP_READ_CTRL_READ_FUSE …

#define VF610_OCOTP_TIMEOUT …

#define BF(value, field) …

#define DEF_RELAX …

static const int base_to_fuse_addr_mappings[][2] = …;

struct vf610_ocotp { … };

static int vf610_ocotp_wait_busy(void __iomem *base)
{ … }

static int vf610_ocotp_calculate_timing(struct vf610_ocotp *ocotp_dev)
{ … }

static int vf610_get_fuse_address(int base_addr_offset)
{ … }

static int vf610_ocotp_read(void *context, unsigned int offset,
			void *val, size_t bytes)
{ … }

static struct nvmem_config ocotp_config = …;

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

static int vf610_ocotp_probe(struct platform_device *pdev)
{ … }

static struct platform_driver vf610_ocotp_driver = …;
module_platform_driver(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;