drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.h
Extension
.h
Size
4295 bytes
Lines
159
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 rcar_du_output_routing {
	unsigned int possible_crtcs;
	unsigned int port;
};

/*
 * struct rcar_du_device_info - DU model-specific information
 * @gen: device generation (2 or 3)
 * @features: device features (RCAR_DU_FEATURE_*)
 * @quirks: device quirks (RCAR_DU_QUIRK_*)
 * @channels_mask: bit mask of available DU channels
 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
 * @num_lvds: number of internal LVDS encoders
 * @num_rpf: number of RPFs in VSP
 * @dpll_mask: bit mask of DU channels equipped with a DPLL
 * @dsi_clk_mask: bitmask of channels that can use the DSI clock as dot clock
 * @lvds_clk_mask: bitmask of channels that can use the LVDS clock as dot clock
 */
struct rcar_du_device_info {
	unsigned int gen;
	unsigned int features;
	unsigned int quirks;
	unsigned int channels_mask;
	struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
	unsigned int num_lvds;
	unsigned int num_rpf;
	unsigned int dpll_mask;
	unsigned int dsi_clk_mask;
	unsigned int lvds_clk_mask;
};

struct rcar_du_cmm {
	struct device *dev;
	struct device_link *link;
};

#define RCAR_DU_MAX_CRTCS		4
#define RCAR_DU_MAX_GROUPS		DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
#define RCAR_DU_MAX_VSPS		4
#define RCAR_DU_MAX_LVDS		2
#define RCAR_DU_MAX_DSI			2

struct rcar_du_device {
	struct device *dev;
	const struct rcar_du_device_info *info;

	void __iomem *mmio;

	struct drm_device ddev;

	struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
	unsigned int num_crtcs;

	struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
	struct rcar_du_cmm cmms[RCAR_DU_MAX_CRTCS];
	struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
	struct drm_bridge *lvds[RCAR_DU_MAX_LVDS];
	struct drm_bridge *dsi[RCAR_DU_MAX_DSI];

	struct {
		struct drm_property *colorkey;
	} props;

	unsigned int dpad0_source;
	unsigned int dpad1_source;
	unsigned int vspd1_sink;
};

static inline struct rcar_du_device *to_rcar_du_device(struct drm_device *dev)
{
	return container_of(dev, struct rcar_du_device, ddev);
}

static inline bool rcar_du_has(struct rcar_du_device *rcdu,
			       unsigned int feature)
{
	return rcdu->info->features & feature;
}

static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
				 unsigned int quirk)
{
	return rcdu->info->quirks & quirk;
}

static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
{
	return ioread32(rcdu->mmio + reg);
}

Annotation

Implementation Notes