mirror of
https://github.com/torvalds/linux
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9f94fadd75
Typically nvmem cells would be stored in device tree. However, for compatibility with device trees that don't contain nvmem cell definitions, register lookups for cells currently used by consumers. This allows the consumers to use the same API to query cells from the device tree or using the legacy mechanism. Signed-off-by: Thierry Reding <treding@nvidia.com>
112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2010 Google, Inc.
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* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
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*
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* Author:
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* Colin Cross <ccross@android.com>
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*/
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#ifndef __DRIVERS_MISC_TEGRA_FUSE_H
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#define __DRIVERS_MISC_TEGRA_FUSE_H
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#include <linux/dmaengine.h>
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#include <linux/types.h>
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struct nvmem_cell_lookup;
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struct nvmem_device;
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struct tegra_fuse;
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struct tegra_fuse_info {
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u32 (*read)(struct tegra_fuse *fuse, unsigned int offset);
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unsigned int size;
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unsigned int spare;
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};
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struct tegra_fuse_soc {
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void (*init)(struct tegra_fuse *fuse);
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void (*speedo_init)(struct tegra_sku_info *info);
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int (*probe)(struct tegra_fuse *fuse);
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const struct tegra_fuse_info *info;
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const struct nvmem_cell_lookup *lookups;
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unsigned int num_lookups;
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};
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struct tegra_fuse {
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struct device *dev;
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void __iomem *base;
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phys_addr_t phys;
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struct clk *clk;
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u32 (*read_early)(struct tegra_fuse *fuse, unsigned int offset);
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u32 (*read)(struct tegra_fuse *fuse, unsigned int offset);
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const struct tegra_fuse_soc *soc;
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/* APBDMA on Tegra20 */
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struct {
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struct mutex lock;
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struct completion wait;
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struct dma_chan *chan;
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struct dma_slave_config config;
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dma_addr_t phys;
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u32 *virt;
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} apbdma;
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struct nvmem_device *nvmem;
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struct nvmem_cell_lookup *lookups;
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};
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void tegra_init_revision(void);
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void tegra_init_apbmisc(void);
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bool __init tegra_fuse_read_spare(unsigned int spare);
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u32 __init tegra_fuse_read_early(unsigned int offset);
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#ifdef CONFIG_ARCH_TEGRA_2x_SOC
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void tegra20_init_speedo_data(struct tegra_sku_info *sku_info);
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#endif
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#ifdef CONFIG_ARCH_TEGRA_3x_SOC
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void tegra30_init_speedo_data(struct tegra_sku_info *sku_info);
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#endif
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#ifdef CONFIG_ARCH_TEGRA_114_SOC
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void tegra114_init_speedo_data(struct tegra_sku_info *sku_info);
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#endif
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#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
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void tegra124_init_speedo_data(struct tegra_sku_info *sku_info);
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#endif
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#ifdef CONFIG_ARCH_TEGRA_210_SOC
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void tegra210_init_speedo_data(struct tegra_sku_info *sku_info);
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#endif
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#ifdef CONFIG_ARCH_TEGRA_2x_SOC
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extern const struct tegra_fuse_soc tegra20_fuse_soc;
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#endif
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#ifdef CONFIG_ARCH_TEGRA_3x_SOC
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extern const struct tegra_fuse_soc tegra30_fuse_soc;
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#endif
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#ifdef CONFIG_ARCH_TEGRA_114_SOC
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extern const struct tegra_fuse_soc tegra114_fuse_soc;
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#endif
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#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
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extern const struct tegra_fuse_soc tegra124_fuse_soc;
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#endif
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#ifdef CONFIG_ARCH_TEGRA_210_SOC
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extern const struct tegra_fuse_soc tegra210_fuse_soc;
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#endif
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#ifdef CONFIG_ARCH_TEGRA_186_SOC
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extern const struct tegra_fuse_soc tegra186_fuse_soc;
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#endif
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#endif
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