drivers/gpu/drm/amd/display/include/audio_types.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/include/audio_types.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/include/audio_types.h
Extension
.h
Size
3339 bytes
Lines
121
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 audio_dp_link_info {
	uint32_t link_bandwidth_kbps;
	uint32_t hblank_min_symbol_width;
	enum dp_link_encoding encoding;
	enum dc_link_rate link_rate;
	enum dc_lane_count lane_count;
	bool is_mst;
};

struct audio_crtc_info {
	uint32_t h_total;
	uint32_t h_active;
	uint32_t v_active;
	uint32_t requested_pixel_clock_100Hz; /* in 100Hz */
	uint32_t calculated_pixel_clock_100Hz; /* in 100Hz */
	uint32_t dsc_bits_per_pixel;
	uint32_t dsc_num_slices;
	enum dc_color_depth color_depth;
	enum dc_pixel_encoding pixel_encoding;
	uint16_t refresh_rate;
	uint8_t pixel_repetition;
	bool interlaced;
	uint32_t frl_character_clock_kHz; /* in KHz */
};
struct azalia_clock_info {
	uint32_t pixel_clock_in_10khz;
	uint32_t audio_dto_phase;
	uint32_t audio_dto_module;
	uint32_t audio_dto_wall_clock_ratio;
};

enum audio_dto_source {
	DTO_SOURCE_UNKNOWN = 0,
	DTO_SOURCE_ID0,
	DTO_SOURCE_ID1,
	DTO_SOURCE_ID2,
	DTO_SOURCE_ID3,
	DTO_SOURCE_ID4,
	DTO_SOURCE_ID5
};

/* PLL information required for AZALIA DTO calculation */

struct audio_pll_info {
	uint32_t audio_dto_source_clock_in_khz;
	uint32_t ss_percentage;
	enum audio_dto_source dto_source;
	bool ss_enabled;
};

struct audio_channel_associate_info {
	union {
		struct {
			uint32_t ALL_CHANNEL_FL:4;
			uint32_t ALL_CHANNEL_FR:4;
			uint32_t ALL_CHANNEL_FC:4;
			uint32_t ALL_CHANNEL_Sub:4;
			uint32_t ALL_CHANNEL_SL:4;
			uint32_t ALL_CHANNEL_SR:4;
			uint32_t ALL_CHANNEL_BL:4;
			uint32_t ALL_CHANNEL_BR:4;
		} bits;
		uint32_t u32all;
	};
};

struct audio_output {
	/* Front DIG id. */
	enum engine_id engine_id;
	/* encoder output signal */
	enum signal_type signal;
	/* video timing */
	struct audio_crtc_info crtc_info;
	/* DP link info */
	struct audio_dp_link_info dp_link_info;
	/* PLL for audio */
	struct audio_pll_info pll_info;
};

enum audio_payload {
	CHANNEL_SPLIT_MAPPINGCHANG = 0x9,
};

#endif /* __AUDIO_TYPES_H__ */

Annotation

Implementation Notes