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Open Menu / drivers / soc / tegra / fuse / fuse.h
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2010 Google, Inc.
 * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
 *
 * Author:
 *	Colin Cross <ccross@android.com>
 */

#ifndef __DRIVERS_MISC_TEGRA_FUSE_H
#define __DRIVERS_MISC_TEGRA_FUSE_H

#include <linux/dmaengine.h>
#include <linux/types.h>

struct nvmem_cell_lookup;
struct nvmem_device;
struct tegra_fuse;

struct tegra_fuse_info {
	u32 (*read)(struct tegra_fuse *fuse, unsigned int offset);
	unsigned int size;
	unsigned int spare;
};

struct tegra_fuse_soc {
	void (*init)(struct tegra_fuse *fuse);
	void (*speedo_init)(struct tegra_sku_info *info);
	int (*probe)(struct tegra_fuse *fuse);

	const struct tegra_fuse_info *info;

	const struct nvmem_cell_lookup *lookups;
	unsigned int num_lookups;

	const struct attribute_group *soc_attr_group;

	bool clk_suspend_on;
};

struct tegra_fuse {
	struct device *dev;
	void __iomem *base;
	phys_addr_t phys;
	struct clk *clk;
	struct reset_control *rst;

	u32 (*read_early)(struct tegra_fuse *fuse, unsigned int offset);
	u32 (*read)(struct tegra_fuse *fuse, unsigned int offset);
	const struct tegra_fuse_soc *soc;

	/* APBDMA on Tegra20 */
	struct {
		struct mutex lock;
		struct completion wait;
		struct dma_chan *chan;
		struct dma_slave_config config;
		dma_addr_t phys;
		u32 *virt;
	} apbdma;

	struct nvmem_device *nvmem;
	struct nvmem_cell_lookup *lookups;
};

void tegra_init_revision(void);
void tegra_init_apbmisc(void);

u32 __init tegra_fuse_read_spare(unsigned int spare);
u32 __init tegra_fuse_read_early(unsigned int offset);

u8 tegra_get_major_rev(void);
u8 tegra_get_minor_rev(void);

extern const struct attribute_group tegra_soc_attr_group;

#ifdef CONFIG_ARCH_TEGRA_2x_SOC
void tegra20_init_speedo_data(struct tegra_sku_info *sku_info);
#endif

#ifdef CONFIG_ARCH_TEGRA_3x_SOC
void tegra30_init_speedo_data(struct tegra_sku_info *sku_info);
#endif

#ifdef CONFIG_ARCH_TEGRA_114_SOC
void tegra114_init_speedo_data(struct tegra_sku_info *sku_info);
#endif

#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
void tegra124_init_speedo_data(struct tegra_sku_info *sku_info);
#endif

#ifdef CONFIG_ARCH_TEGRA_210_SOC
void tegra210_init_speedo_data(struct tegra_sku_info *sku_info);
#endif

#ifdef CONFIG_ARCH_TEGRA_2x_SOC
extern const struct tegra_fuse_soc tegra20_fuse_soc;
#endif

#ifdef CONFIG_ARCH_TEGRA_3x_SOC
extern const struct tegra_fuse_soc tegra30_fuse_soc;
#endif

#ifdef CONFIG_ARCH_TEGRA_114_SOC
extern const struct tegra_fuse_soc tegra114_fuse_soc;
#endif

#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
extern const struct tegra_fuse_soc tegra124_fuse_soc;
#endif

#ifdef CONFIG_ARCH_TEGRA_210_SOC
extern const struct tegra_fuse_soc tegra210_fuse_soc;
#endif

#ifdef CONFIG_ARCH_TEGRA_186_SOC
extern const struct tegra_fuse_soc tegra186_fuse_soc;
#endif

#if IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC) || \
    IS_ENABLED(CONFIG_ARCH_TEGRA_234_SOC)
extern const struct attribute_group tegra194_soc_attr_group;
#endif

#ifdef CONFIG_ARCH_TEGRA_194_SOC
extern const struct tegra_fuse_soc tegra194_fuse_soc;
#endif

#ifdef CONFIG_ARCH_TEGRA_234_SOC
extern const struct tegra_fuse_soc tegra234_fuse_soc;
#endif

#endif