drivers/gpu/drm/rockchip/cdn-dp-core.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/rockchip/cdn-dp-core.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/rockchip/cdn-dp-core.h
Extension
.h
Size
2178 bytes
Lines
106
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_info {
	enum audio_format format;
	int sample_rate;
	int channels;
	int sample_width;
};

enum vic_pxl_encoding_format {
	PXL_RGB = 0x1,
	YCBCR_4_4_4 = 0x2,
	YCBCR_4_2_2 = 0x4,
	YCBCR_4_2_0 = 0x8,
	Y_ONLY = 0x10,
};

struct video_info {
	bool h_sync_polarity;
	bool v_sync_polarity;
	bool interlaced;
	int color_depth;
	enum vic_pxl_encoding_format color_fmt;
};

struct cdn_firmware_header {
	u32 size_bytes; /* size of the entire header+image(s) in bytes */
	u32 header_size; /* size of just the header in bytes */
	u32 iram_size; /* size of iram */
	u32 dram_size; /* size of dram */
};

struct cdn_dp_port {
	struct cdn_dp_device *dp;
	struct notifier_block event_nb;
	struct extcon_dev *extcon;
	struct phy *phy;
	u8 lanes;
	bool phy_enabled;
	u8 id;
};

struct cdn_dp_device {
	struct device *dev;
	struct drm_device *drm_dev;
	struct drm_bridge bridge;
	struct rockchip_encoder encoder;
	struct drm_display_mode mode;
	struct platform_device *audio_pdev;
	struct work_struct event_work;

	struct mutex lock;
	bool connected;
	bool active;
	bool suspended;

	const struct firmware *fw;	/* cdn dp firmware */
	unsigned int fw_version;	/* cdn fw version */
	bool fw_loaded;

	void __iomem *regs;
	struct regmap *grf;
	struct clk *core_clk;
	struct clk *pclk;
	struct clk *spdif_clk;
	struct clk *grf_clk;
	struct reset_control *spdif_rst;
	struct reset_control *dptx_rst;
	struct reset_control *apb_rst;
	struct reset_control *core_rst;
	struct audio_info audio_info;
	struct video_info video_info;
	struct cdn_dp_port *port[MAX_PHY];
	u8 ports;
	u8 max_lanes;
	unsigned int max_rate;
	u8 lanes;
	int active_port;

	u8 dpcd[DP_RECEIVER_CAP_SIZE];
};
#endif  /* _CDN_DP_CORE_H */

Annotation

Implementation Notes