drivers/media/platform/qcom/venus/hfi_platform.c

Source file repositories/reference/linux-study-clean/drivers/media/platform/qcom/venus/hfi_platform.c

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/qcom/venus/hfi_platform.c
Extension
.c
Size
1450 bytes
Lines
74
Domain
Driver Families
Bucket
drivers/media
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

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2020, The Linux Foundation. All rights reserved.
 */
#include "hfi_platform.h"

const struct hfi_platform *hfi_platform_get(enum hfi_version version)
{
	switch (version) {
	case HFI_VERSION_4XX:
		return &hfi_plat_v4;
	case HFI_VERSION_6XX:
		return &hfi_plat_v6;
	default:
		break;
	}

	return NULL;
}

unsigned long
hfi_platform_get_codec_vpp_freq(struct venus_core *core,
				enum hfi_version version, u32 codec,
				u32 session_type)
{
	const struct hfi_platform *plat;
	unsigned long freq = 0;

	plat = hfi_platform_get(version);
	if (!plat)
		return 0;

	if (plat->codec_vpp_freq)
		freq = plat->codec_vpp_freq(core, session_type, codec);

	return freq;
}

unsigned long
hfi_platform_get_codec_vsp_freq(struct venus_core *core,
				enum hfi_version version, u32 codec,
				u32 session_type)
{
	const struct hfi_platform *plat;
	unsigned long freq = 0;

	plat = hfi_platform_get(version);
	if (!plat)
		return 0;

	if (plat->codec_vpp_freq)
		freq = plat->codec_vsp_freq(core, session_type, codec);

	return freq;
}

unsigned long
hfi_platform_get_codec_lp_freq(struct venus_core *core,
			       enum hfi_version version, u32 codec,
			       u32 session_type)
{
	const struct hfi_platform *plat;
	unsigned long freq = 0;

	plat = hfi_platform_get(version);
	if (!plat)
		return 0;

	if (plat->codec_lp_freq)
		freq = plat->codec_lp_freq(core, session_type, codec);

	return freq;
}

Annotation

Implementation Notes