drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.c
Extension
.c
Size
2737 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.

Dependency Surface

Detected Declarations

Annotated Snippet

#include "dc_bios_types.h"
#include "dcn30/dcn30_vpg.h"
#include "dcn31_vpg.h"
#include "reg_helper.h"
#include "dc/dc.h"

#define DC_LOGGER \
		vpg31->base.ctx->logger

#define REG(reg)\
	(vpg31->regs->reg)

#undef FN
#define FN(reg_name, field_name) \
	vpg31->vpg_shift->field_name, vpg31->vpg_mask->field_name


#define CTX \
	vpg31->base.ctx

static struct vpg_funcs dcn31_vpg_funcs = {
	.update_generic_info_packet	= vpg3_update_generic_info_packet,
	.vpg_poweron = vpg31_poweron,
	.vpg_powerdown = vpg31_powerdown,
};

void vpg31_powerdown(struct vpg *vpg)
{
	struct dcn31_vpg *vpg31 = DCN31_VPG_FROM_VPG(vpg);

	if (vpg->ctx->dc->debug.enable_mem_low_power.bits.vpg == false)
		return;

	REG_UPDATE_2(VPG_MEM_PWR, VPG_GSP_MEM_LIGHT_SLEEP_DIS, 0, VPG_GSP_LIGHT_SLEEP_FORCE, 1);
}

void vpg31_poweron(struct vpg *vpg)
{
	struct dcn31_vpg *vpg31 = DCN31_VPG_FROM_VPG(vpg);

	uint32_t vpg_gsp_mem_pwr_state;

	REG_GET(VPG_MEM_PWR, VPG_GSP_MEM_PWR_STATE, &vpg_gsp_mem_pwr_state);

	if (vpg->ctx->dc->debug.enable_mem_low_power.bits.vpg == false &&
			vpg_gsp_mem_pwr_state == 0)
		return;

	REG_UPDATE_2(VPG_MEM_PWR, VPG_GSP_MEM_LIGHT_SLEEP_DIS, 1, VPG_GSP_LIGHT_SLEEP_FORCE, 0);
}

void vpg31_construct(struct dcn31_vpg *vpg31,
	struct dc_context *ctx,
	uint32_t inst,
	const struct dcn31_vpg_registers *vpg_regs,
	const struct dcn31_vpg_shift *vpg_shift,
	const struct dcn31_vpg_mask *vpg_mask)
{
	vpg31->base.ctx = ctx;

	vpg31->base.inst = inst;
	vpg31->base.funcs = &dcn31_vpg_funcs;

	vpg31->regs = vpg_regs;
	vpg31->vpg_shift = vpg_shift;
	vpg31->vpg_mask = vpg_mask;
}

Annotation

Implementation Notes