drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c
Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_afmt.c- Extension
.c- Size
- 2832 bytes
- Lines
- 93
- 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.
- 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.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
dc_bios_types.hhw_shared.hdcn30/dcn30_afmt.hdcn31_afmt.hreg_helper.hdc/dc.h
Detected Declarations
function afmt31_powerdownfunction afmt31_poweronfunction afmt31_construct
Annotated Snippet
#include "dc_bios_types.h"
#include "hw_shared.h"
#include "dcn30/dcn30_afmt.h"
#include "dcn31_afmt.h"
#include "reg_helper.h"
#include "dc/dc.h"
#define DC_LOGGER \
afmt31->base.ctx->logger
#define REG(reg)\
(afmt31->regs->reg)
#undef FN
#define FN(reg_name, field_name) \
afmt31->afmt_shift->field_name, afmt31->afmt_mask->field_name
#define CTX \
afmt31->base.ctx
static struct afmt_funcs dcn31_afmt_funcs = {
.setup_hdmi_audio = afmt3_setup_hdmi_audio,
.se_audio_setup = afmt3_se_audio_setup,
.audio_mute_control = afmt3_audio_mute_control,
.audio_info_immediate_update = afmt3_audio_info_immediate_update,
.setup_dp_audio = afmt3_setup_dp_audio,
.afmt_powerdown = afmt31_powerdown,
.afmt_poweron = afmt31_poweron
};
void afmt31_powerdown(struct afmt *afmt)
{
struct dcn31_afmt *afmt31 = DCN31_AFMT_FROM_AFMT(afmt);
if (afmt->ctx->dc->debug.enable_mem_low_power.bits.afmt == false)
return;
REG_UPDATE_2(AFMT_MEM_PWR, AFMT_MEM_PWR_DIS, 0, AFMT_MEM_PWR_FORCE, 1);
}
void afmt31_poweron(struct afmt *afmt)
{
struct dcn31_afmt *afmt31 = DCN31_AFMT_FROM_AFMT(afmt);
if (afmt->ctx->dc->debug.enable_mem_low_power.bits.afmt == false)
return;
REG_UPDATE_2(AFMT_MEM_PWR, AFMT_MEM_PWR_DIS, 1, AFMT_MEM_PWR_FORCE, 0);
}
void afmt31_construct(struct dcn31_afmt *afmt31,
struct dc_context *ctx,
uint32_t inst,
const struct dcn31_afmt_registers *afmt_regs,
const struct dcn31_afmt_shift *afmt_shift,
const struct dcn31_afmt_mask *afmt_mask)
{
afmt31->base.ctx = ctx;
afmt31->base.inst = inst;
afmt31->base.funcs = &dcn31_afmt_funcs;
afmt31->regs = afmt_regs;
afmt31->afmt_shift = afmt_shift;
afmt31->afmt_mask = afmt_mask;
}
Annotation
- Immediate include surface: `dc_bios_types.h`, `hw_shared.h`, `dcn30/dcn30_afmt.h`, `dcn31_afmt.h`, `reg_helper.h`, `dc/dc.h`.
- Detected declarations: `function afmt31_powerdown`, `function afmt31_poweron`, `function afmt31_construct`.
- Atlas domain: Driver Families / drivers/gpu.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.