include/drm/gud.h

Source file repositories/reference/linux-study-clean/include/drm/gud.h

File Facts

System
Linux kernel
Corpus path
include/drm/gud.h
Extension
.h
Size
11934 bytes
Lines
336
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

struct gud_display_descriptor_req {
	__le32 magic;
#define GUD_DISPLAY_MAGIC			0x1d50614d
	__u8 version;
	__le32 flags;
#define GUD_DISPLAY_FLAG_STATUS_ON_SET		BIT(0)
#define GUD_DISPLAY_FLAG_FULL_UPDATE		BIT(1)
	__u8 compression;
#define GUD_COMPRESSION_LZ4			BIT(0)
	__le32 max_buffer_size;
	__le32 min_width;
	__le32 max_width;
	__le32 min_height;
	__le32 max_height;
} __packed;

/*
 * struct gud_property_req - Property
 * @prop: Property
 * @val: Value
 */
struct gud_property_req {
	__le16 prop;
	__le64 val;
} __packed;

/*
 * struct gud_display_mode_req - Display mode
 * @clock: Pixel clock in kHz
 * @hdisplay: Horizontal display size
 * @hsync_start: Horizontal sync start
 * @hsync_end: Horizontal sync end
 * @htotal: Horizontal total size
 * @vdisplay: Vertical display size
 * @vsync_start: Vertical sync start
 * @vsync_end: Vertical sync end
 * @vtotal: Vertical total size
 * @flags: Bits 0-13 are the same as in the RandR protocol and also what DRM uses.
 *         The deprecated bits are reused for internal protocol flags leaving us
 *         free to follow DRM for the other bits in the future.
 *         - FLAG_PREFERRED: Set on the preferred display mode.
 */
struct gud_display_mode_req {
	__le32 clock;
	__le16 hdisplay;
	__le16 hsync_start;
	__le16 hsync_end;
	__le16 htotal;
	__le16 vdisplay;
	__le16 vsync_start;
	__le16 vsync_end;
	__le16 vtotal;
	__le32 flags;
#define GUD_DISPLAY_MODE_FLAG_PHSYNC		BIT(0)
#define GUD_DISPLAY_MODE_FLAG_NHSYNC		BIT(1)
#define GUD_DISPLAY_MODE_FLAG_PVSYNC		BIT(2)
#define GUD_DISPLAY_MODE_FLAG_NVSYNC		BIT(3)
#define GUD_DISPLAY_MODE_FLAG_INTERLACE		BIT(4)
#define GUD_DISPLAY_MODE_FLAG_DBLSCAN		BIT(5)
#define GUD_DISPLAY_MODE_FLAG_CSYNC		BIT(6)
#define GUD_DISPLAY_MODE_FLAG_PCSYNC		BIT(7)
#define GUD_DISPLAY_MODE_FLAG_NCSYNC		BIT(8)
#define GUD_DISPLAY_MODE_FLAG_HSKEW		BIT(9)
/* BCast and PixelMultiplex are deprecated */
#define GUD_DISPLAY_MODE_FLAG_DBLCLK		BIT(12)
#define GUD_DISPLAY_MODE_FLAG_CLKDIV2		BIT(13)
#define GUD_DISPLAY_MODE_FLAG_USER_MASK		\
		(GUD_DISPLAY_MODE_FLAG_PHSYNC | GUD_DISPLAY_MODE_FLAG_NHSYNC | \
		GUD_DISPLAY_MODE_FLAG_PVSYNC | GUD_DISPLAY_MODE_FLAG_NVSYNC | \
		GUD_DISPLAY_MODE_FLAG_INTERLACE | GUD_DISPLAY_MODE_FLAG_DBLSCAN | \
		GUD_DISPLAY_MODE_FLAG_CSYNC | GUD_DISPLAY_MODE_FLAG_PCSYNC | \
		GUD_DISPLAY_MODE_FLAG_NCSYNC | GUD_DISPLAY_MODE_FLAG_HSKEW | \
		GUD_DISPLAY_MODE_FLAG_DBLCLK | GUD_DISPLAY_MODE_FLAG_CLKDIV2)
/* Internal protocol flags */
#define GUD_DISPLAY_MODE_FLAG_PREFERRED		BIT(10)
} __packed;

/*
 * struct gud_connector_descriptor_req - Connector descriptor
 * @connector_type: Connector type (GUD_CONNECTOR_TYPE_*).
 *                  If the host doesn't support the type it should fall back to PANEL.
 * @flags: Flags
 *         - POLL_STATUS: Connector status can change (polled every 10 seconds)
 *         - INTERLACE: Interlaced modes are supported
 *         - DOUBLESCAN: Doublescan modes are supported
 */
struct gud_connector_descriptor_req {
	__u8 connector_type;
#define GUD_CONNECTOR_TYPE_PANEL		0
#define GUD_CONNECTOR_TYPE_VGA			1

Annotation

Implementation Notes