drivers/gpu/drm/amd/display/dc/hubbub/dcn201/dcn201_hubbub.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/hubbub/dcn201/dcn201_hubbub.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/dc/hubbub/dcn201/dcn201_hubbub.c
Extension
.c
Size
3390 bytes
Lines
108
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 "dm_services.h"
#include "dcn20/dcn20_hubbub.h"
#include "dcn201_hubbub.h"
#include "reg_helper.h"

#define REG(reg)\
	hubbub1->regs->reg

#define DC_LOGGER \
	hubbub1->base.ctx->logger

#define CTX \
	hubbub1->base.ctx

#undef FN
#define FN(reg_name, field_name) \
	hubbub1->shifts->field_name, hubbub1->masks->field_name

#define REG(reg)\
	hubbub1->regs->reg

#define CTX \
	hubbub1->base.ctx

#undef FN
#define FN(reg_name, field_name) \
	hubbub1->shifts->field_name, hubbub1->masks->field_name

static bool hubbub201_program_watermarks(
		struct hubbub *hubbub,
		union dcn_watermark_set *watermarks,
		unsigned int refclk_mhz,
		bool safe_to_lower)
{
	struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub);
	bool wm_pending = false;

	if (hubbub1_program_urgent_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower))
		wm_pending = true;

	if (hubbub1_program_pstate_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower))
		wm_pending = true;

	REG_SET(DCHUBBUB_ARB_SAT_LEVEL, 0,
			DCHUBBUB_ARB_SAT_LEVEL, 60 * refclk_mhz);
	REG_UPDATE(DCHUBBUB_ARB_DF_REQ_OUTSTAND,
			DCHUBBUB_ARB_MIN_REQ_OUTSTAND, 68);

	hubbub1_allow_self_refresh_control(hubbub, !hubbub->ctx->dc->debug.disable_stutter);

	return wm_pending;
}

static const struct hubbub_funcs hubbub201_funcs = {
	.update_dchub = hubbub2_update_dchub,
	.init_dchub_sys_ctx = NULL,
	.init_vm_ctx = NULL,
	.dcc_support_swizzle = hubbub2_dcc_support_swizzle,
	.dcc_support_pixel_format = hubbub2_dcc_support_pixel_format,
	.get_dcc_compression_cap = hubbub2_get_dcc_compression_cap,
	.wm_read_state = hubbub2_wm_read_state,
	.get_dchub_ref_freq = hubbub2_get_dchub_ref_freq,
	.program_watermarks = hubbub201_program_watermarks,
	.hubbub_read_state = hubbub2_read_state,
};

void hubbub201_construct(struct dcn20_hubbub *hubbub,
	struct dc_context *ctx,
	const struct dcn_hubbub_registers *hubbub_regs,
	const struct dcn_hubbub_shift *hubbub_shift,
	const struct dcn_hubbub_mask *hubbub_mask)
{
	hubbub->base.ctx = ctx;

	hubbub->base.funcs = &hubbub201_funcs;

	hubbub->regs = hubbub_regs;
	hubbub->shifts = hubbub_shift;
	hubbub->masks = hubbub_mask;

	hubbub->debug_test_index_pstate = 0xB;
	hubbub->detile_buf_size = 164 * 1024; /* 164KB for DCN2.0 */
}

Annotation

Implementation Notes