drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
Extension
.c
Size
47197 bytes
Lines
1603
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

switch (packet_index) {
		case 0:
			REG_UPDATE(AFMT_VBI_PACKET_CONTROL1,
					AFMT_GENERIC0_FRAME_UPDATE, 1);
			break;
		case 1:
			REG_UPDATE(AFMT_VBI_PACKET_CONTROL1,
					AFMT_GENERIC1_FRAME_UPDATE, 1);
			break;
		case 2:
			REG_UPDATE(AFMT_VBI_PACKET_CONTROL1,
					AFMT_GENERIC2_FRAME_UPDATE, 1);
			break;
		case 3:
			REG_UPDATE(AFMT_VBI_PACKET_CONTROL1,
					AFMT_GENERIC3_FRAME_UPDATE, 1);
			break;
		case 4:
			REG_UPDATE(AFMT_VBI_PACKET_CONTROL1,
					AFMT_GENERIC4_FRAME_UPDATE, 1);
			break;
		case 5:
			REG_UPDATE(AFMT_VBI_PACKET_CONTROL1,
					AFMT_GENERIC5_FRAME_UPDATE, 1);
			break;
		case 6:
			REG_UPDATE(AFMT_VBI_PACKET_CONTROL1,
					AFMT_GENERIC6_FRAME_UPDATE, 1);
			break;
		case 7:
			REG_UPDATE(AFMT_VBI_PACKET_CONTROL1,
					AFMT_GENERIC7_FRAME_UPDATE, 1);
			break;
		default:
			break;
		}
	}
}

static void dce110_update_hdmi_info_packet(
	struct dce110_stream_encoder *enc110,
	uint32_t packet_index,
	const struct dc_info_packet *info_packet)
{
	uint32_t cont, send, line;

	if (info_packet->valid) {
		dce110_update_generic_info_packet(
			enc110,
			packet_index,
			info_packet);

		/* enable transmission of packet(s) -
		 * packet transmission begins on the next frame */
		cont = 1;
		/* send packet(s) every frame */
		send = 1;
		/* select line number to send packets on */
		line = 2;
	} else {
		cont = 0;
		send = 0;
		line = 0;
	}

	/* choose which generic packet control to use */
	switch (packet_index) {
	case 0:
		REG_UPDATE_3(HDMI_GENERIC_PACKET_CONTROL0,
				HDMI_GENERIC0_CONT, cont,
				HDMI_GENERIC0_SEND, send,
				HDMI_GENERIC0_LINE, line);
		break;
	case 1:
		REG_UPDATE_3(HDMI_GENERIC_PACKET_CONTROL0,
				HDMI_GENERIC1_CONT, cont,
				HDMI_GENERIC1_SEND, send,
				HDMI_GENERIC1_LINE, line);
		break;
	case 2:
		REG_UPDATE_3(HDMI_GENERIC_PACKET_CONTROL1,
				HDMI_GENERIC0_CONT, cont,
				HDMI_GENERIC0_SEND, send,
				HDMI_GENERIC0_LINE, line);
		break;
	case 3:
		REG_UPDATE_3(HDMI_GENERIC_PACKET_CONTROL1,
				HDMI_GENERIC1_CONT, cont,
				HDMI_GENERIC1_SEND, send,
				HDMI_GENERIC1_LINE, line);

Annotation

Implementation Notes