drivers/soc/tegra/fuse/fuse.h

Source file repositories/reference/linux-study-clean/drivers/soc/tegra/fuse/fuse.h

File Facts

System
Linux kernel
Corpus path
drivers/soc/tegra/fuse/fuse.h
Extension
.h
Size
3546 bytes
Lines
145
Domain
Driver Families
Bucket
drivers/soc
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

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 nvmem_cell_info *cells;
	unsigned int num_cells;
	const struct nvmem_keepout *keepouts;
	unsigned int num_keepouts;

	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);
void tegra_acpi_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

Annotation

Implementation Notes