linux/drivers/mtd/maps/physmap-versatile.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Versatile OF physmap driver add-on
 *
 * Copyright (c) 2016, Linaro Limited
 * Author: Linus Walleij <[email protected]>
 */
#include <linux/export.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/mtd/map.h>
#include <linux/mfd/syscon.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/bitops.h>
#include "physmap-versatile.h"

static struct regmap *syscon_regmap;

enum versatile_flashprot { … };

static const struct of_device_id syscon_match[] = …;

/*
 * Flash protection handling for the Integrator/AP
 */
#define INTEGRATOR_SC_CTRLS_OFFSET …
#define INTEGRATOR_SC_CTRLC_OFFSET …
#define INTEGRATOR_SC_CTRL_FLVPPEN …
#define INTEGRATOR_SC_CTRL_FLWP …

#define INTEGRATOR_EBI_CSR1_OFFSET …
/* The manual says bit 2, the code says bit 3, trust the code */
#define INTEGRATOR_EBI_WRITE_ENABLE …
#define INTEGRATOR_EBI_LOCK_OFFSET …
#define INTEGRATOR_EBI_LOCK_VAL …

static const struct of_device_id ebi_match[] = …;

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

static void ap_flash_set_vpp(struct map_info *map, int on)
{ … }

/*
 * Flash protection handling for the Integrator/CP
 */

#define INTCP_FLASHPROG_OFFSET …
#define CINTEGRATOR_FLVPPEN …
#define CINTEGRATOR_FLWREN …
#define CINTEGRATOR_FLMASK …

static void cp_flash_set_vpp(struct map_info *map, int on)
{ … }

/*
 * Flash protection handling for the Versatiles and RealViews
 */

#define VERSATILE_SYS_FLASH_OFFSET …

static void versatile_flash_set_vpp(struct map_info *map, int on)
{ … }

int of_flash_probe_versatile(struct platform_device *pdev,
			     struct device_node *np,
			     struct map_info *map)
{ … }