drivers/gpu/drm/amd/display/dc/inc/compressor.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/inc/compressor.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/dc/inc/compressor.h
Extension
.h
Size
3861 bytes
Lines
138
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 compr_addr_and_pitch_params {
	/* enum controller_id controller_id; */
	uint32_t inst;
	uint32_t source_view_width;
	uint32_t source_view_height;
};

enum fbc_hw_max_resolution_supported {
	FBC_MAX_X = 3840,
	FBC_MAX_Y = 2400,
	FBC_MAX_X_SG = 1920,
	FBC_MAX_Y_SG = 1080,
};

struct compressor;

struct compressor_funcs {

	void (*power_up_fbc)(struct compressor *cp);
	void (*enable_fbc)(struct compressor *cp,
		struct compr_addr_and_pitch_params *params);
	void (*disable_fbc)(struct compressor *cp);
	void (*set_fbc_invalidation_triggers)(struct compressor *cp,
		uint32_t fbc_trigger);
	void (*surface_address_and_pitch)(
		struct compressor *cp,
		struct compr_addr_and_pitch_params *params);
	bool (*is_fbc_enabled_in_hw)(struct compressor *cp,
		uint32_t *fbc_mapped_crtc_id);
};
struct compressor {
	struct dc_context *ctx;
	/* CONTROLLER_ID_D0 + instance, CONTROLLER_ID_UNDEFINED = 0 */
	uint32_t attached_inst;
	bool is_enabled;
	const struct compressor_funcs *funcs;
	union {
		uint32_t raw;
		struct {
			uint32_t FBC_SUPPORT:1;
			uint32_t FB_POOL:1;
			uint32_t DYNAMIC_ALLOC:1;
			uint32_t LPT_SUPPORT:1;
			uint32_t LPT_MC_CONFIG:1;
			uint32_t DUMMY_BACKEND:1;
			uint32_t CLK_GATING_DISABLED:1;

		} bits;
	} options;

	union fbc_physical_address compr_surface_address;

	uint32_t embedded_panel_h_size;
	uint32_t embedded_panel_v_size;
	uint32_t memory_bus_width;
	uint32_t banks_num;
	uint32_t raw_size;
	uint32_t channel_interleave_size;
	uint32_t dram_channels_num;

	uint32_t allocated_size;
	uint32_t preferred_requested_size;
	uint32_t lpt_channels_num;
	enum fbc_compress_ratio min_compress_ratio;
};

struct fbc_input_info {
	bool           dynamic_fbc_buffer_alloc;
	unsigned int   source_view_width;
	unsigned int   source_view_height;
	unsigned int   num_of_active_targets;
};


struct fbc_requested_compressed_size {
	unsigned int   preferred_size;
	unsigned int   preferred_size_alignment;
	unsigned int   min_size;
	unsigned int   min_size_alignment;
	union {
		struct {
			/* Above preferedSize must be allocated in FB pool */
			unsigned int preferred_must_be_framebuffer_pool : 1;
			/* Above minSize must be allocated in FB pool */
			unsigned int min_must_be_framebuffer_pool : 1;
		} bits;
		unsigned int flags;
	};
};
#endif

Annotation

Implementation Notes