linux/drivers/memory/samsung/exynos-srom.c

// SPDX-License-Identifier: GPL-2.0
//
// Copyright (c) 2015 Samsung Electronics Co., Ltd.
//	      http://www.samsung.com/
//
// Exynos - SROM Controller support
// Author: Pankaj Dubey <[email protected]>

#include <linux/io.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/slab.h>

#include "exynos-srom.h"

static const unsigned long exynos_srom_offsets[] = …;

/**
 * struct exynos_srom_reg_dump: register dump of SROM Controller registers.
 * @offset: srom register offset from the controller base address.
 * @value: the value of register under the offset.
 */
struct exynos_srom_reg_dump { … };

/**
 * struct exynos_srom: platform data for exynos srom controller driver.
 * @dev: platform device pointer
 * @reg_base: srom base address
 * @reg_offset: exynos_srom_reg_dump pointer to hold offset and its value.
 */
struct exynos_srom { … };

static struct exynos_srom_reg_dump *
exynos_srom_alloc_reg_dump(const unsigned long *rdump,
			   unsigned long nr_rdump)
{ … }

static int exynos_srom_configure_bank(struct exynos_srom *srom,
				      struct device_node *np)
{ … }

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

#ifdef CONFIG_PM_SLEEP
static void exynos_srom_save(void __iomem *base,
			     struct exynos_srom_reg_dump *rd,
			     unsigned int num_regs)
{ … }

static void exynos_srom_restore(void __iomem *base,
				const struct exynos_srom_reg_dump *rd,
				unsigned int num_regs)
{ … }

static int exynos_srom_suspend(struct device *dev)
{ … }

static int exynos_srom_resume(struct device *dev)
{ … }
#endif

static const struct of_device_id of_exynos_srom_ids[] = …;

static SIMPLE_DEV_PM_OPS(exynos_srom_pm_ops, exynos_srom_suspend, exynos_srom_resume);

static struct platform_driver exynos_srom_driver = …;
builtin_platform_driver(…) …;