drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_hpo_frl.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_hpo_frl.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_hpo_frl.c
Extension
.c
Size
4246 bytes
Lines
114
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

#include "link_hwss_hpo_frl.h"
#include "core_types.h"
#include "link/hwss/link_hwss_virtual.h"

static void setup_hpo_frl_stream_attribute(struct pipe_ctx *pipe_ctx)
{
	struct hpo_frl_stream_encoder *stream_enc = pipe_ctx->stream_res.hpo_frl_stream_enc;
	struct dc_stream_state *stream = pipe_ctx->stream;
	struct pipe_ctx *odm_pipe;
	struct dc *dc = stream->link->ctx->dc;
	struct dc_stream_state *temp_stream = &dc->scratch.temp_stream;
	int odm_combine_num_segments = 1;

	memcpy(temp_stream, stream, sizeof(struct dc_stream_state));

	/* Modify patched_crtc_timing as required for padding */
	if (pipe_ctx->dsc_padding_params.dsc_hactive_padding) {
		temp_stream->timing.h_addressable = stream->timing.h_addressable + pipe_ctx->dsc_padding_params.dsc_hactive_padding;
		temp_stream->timing.h_total = stream->timing.h_total + pipe_ctx->dsc_padding_params.dsc_htotal_padding;
	}

	/* get number of ODM combine input segments */
	for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe)
		odm_combine_num_segments++;

	stream_enc->funcs->hdmi_frl_set_stream_attribute(
			stream_enc,
			&temp_stream->timing,
			&stream->link->frl_link_settings.borrow_params,
			odm_combine_num_segments);
}

static void disable_hpo_frl_link_output(struct dc_link *link,
		const struct link_resource *link_res,
		enum signal_type signal)
{
	(void)link_res;
	if (dc_is_hdmi_frl_signal(signal))
		link->hpo_frl_link_enc->funcs->disable_link_encoder(link->hpo_frl_link_enc);
	link->link_enc->funcs->disable_output(link->link_enc, signal);
}

static void setup_hpo_frl_audio_output(struct pipe_ctx *pipe_ctx,
		struct audio_output *audio_output, uint32_t audio_inst)
{
	pipe_ctx->stream_res.hpo_frl_stream_enc->funcs->hdmi_audio_setup(
			pipe_ctx->stream_res.hpo_frl_stream_enc,
			audio_inst,
			&pipe_ctx->stream->audio_info,
			&audio_output->crtc_info);
}

static void enable_hpo_frl_audio_packet(struct pipe_ctx *pipe_ctx)
{
	pipe_ctx->stream_res.hpo_frl_stream_enc->funcs->audio_mute_control(
			pipe_ctx->stream_res.hpo_frl_stream_enc, false);
}

static void disable_hpo_frl_audio_packet(struct pipe_ctx *pipe_ctx)
{
	pipe_ctx->stream_res.hpo_frl_stream_enc->funcs->audio_mute_control(
		pipe_ctx->stream_res.hpo_frl_stream_enc, true);

	if (pipe_ctx->stream_res.audio)
		pipe_ctx->stream_res.hpo_frl_stream_enc->funcs->hdmi_audio_disable(
			pipe_ctx->stream_res.hpo_frl_stream_enc);
}

static const struct link_hwss hpo_frl_link_hwss = {
	.setup_stream_encoder = virtual_setup_stream_encoder,
	.reset_stream_encoder = virtual_reset_stream_encoder,
	.setup_stream_attribute = setup_hpo_frl_stream_attribute,
	.disable_link_output = disable_hpo_frl_link_output,
	.setup_audio_output = setup_hpo_frl_audio_output,
	.enable_audio_packet = enable_hpo_frl_audio_packet,
	.disable_audio_packet = disable_hpo_frl_audio_packet,
};

bool can_use_hpo_frl_link_hwss(const struct dc_link *link,
		const struct link_resource *link_res)
{
	(void)link;
	return link_res->hpo_frl_link_enc != NULL;
}

const struct link_hwss *get_hpo_frl_link_hwss(void)
{
	return &hpo_frl_link_hwss;
}

Annotation

Implementation Notes