drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h
Extension
.h
Size
6339 bytes
Lines
221
Domain
Driver Families
Bucket
drivers/gpu
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 atom_clock_dividers {
	u32 post_div;
	union {
		struct {
#ifdef __BIG_ENDIAN
			u32 reserved : 6;
			u32 whole_fb_div : 12;
			u32 frac_fb_div : 14;
#else
			u32 frac_fb_div : 14;
			u32 whole_fb_div : 12;
			u32 reserved : 6;
#endif
		};
		u32 fb_div;
	};
	u32 ref_div;
	bool enable_post_div;
	bool enable_dithen;
	u32 vco_mode;
	u32 real_clock;
	/* added for CI */
	u32 post_divider;
	u32 flags;
};

struct atom_mpll_param {
	union {
		struct {
#ifdef __BIG_ENDIAN
			u32 reserved : 8;
			u32 clkfrac : 12;
			u32 clkf : 12;
#else
			u32 clkf : 12;
			u32 clkfrac : 12;
			u32 reserved : 8;
#endif
		};
		u32 fb_div;
	};
	u32 post_div;
	u32 bwcntl;
	u32 dll_speed;
	u32 vco_mode;
	u32 yclk_sel;
	u32 qdr;
	u32 half_rate;
};

#define MEM_TYPE_GDDR5  0x50
#define MEM_TYPE_GDDR4  0x40
#define MEM_TYPE_GDDR3  0x30
#define MEM_TYPE_DDR2   0x20
#define MEM_TYPE_GDDR1  0x10
#define MEM_TYPE_DDR3   0xb0
#define MEM_TYPE_MASK   0xf0

struct atom_memory_info {
	u8 mem_vendor;
	u8 mem_type;
};

#define MAX_AC_TIMING_ENTRIES 16

struct atom_memory_clock_range_table {
	u8 num_entries;
	u8 rsv[3];
	u32 mclk[MAX_AC_TIMING_ENTRIES];
};

#define VBIOS_MC_REGISTER_ARRAY_SIZE 32
#define VBIOS_MAX_AC_TIMING_ENTRIES 20

struct atom_mc_reg_entry {
	u32 mclk_max;
	u32 mc_data[VBIOS_MC_REGISTER_ARRAY_SIZE];
};

struct atom_mc_register_address {
	u16 s1;
	u8 pre_reg_data;
};

struct atom_mc_reg_table {
	u8 last;
	u8 num_entries;
	struct atom_mc_reg_entry mc_reg_table_entry[VBIOS_MAX_AC_TIMING_ENTRIES];
	struct atom_mc_register_address mc_reg_address[VBIOS_MC_REGISTER_ARRAY_SIZE];
};

Annotation

Implementation Notes