drivers/soc/tegra/fuse/speedo-tegra30.c

File Facts

System

Linux kernel

Corpus path

drivers/soc/tegra/fuse/speedo-tegra30.c

Extension

.c

Size

6808 bytes

Lines

278

Domain

Driver Families

Bucket

drivers/soc

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

• linux/bug.h
• linux/device.h
• linux/kernel.h
• soc/tegra/fuse.h
• fuse.h

Detected Declarations

• function fuse_speedo_calib
• function rev_sku_to_speedo_ids
• function tegra30_init_speedo_data

Annotated Snippet

switch (sku_info->sku_id) {
		case 0x87:
		case 0x82:
			sku_info->cpu_speedo_id = 1;
			sku_info->soc_speedo_id = 1;
			threshold_index = THRESHOLD_INDEX_1;
			break;
		case 0x81:
			switch (package_id) {
			case 1:
				sku_info->cpu_speedo_id = 2;
				sku_info->soc_speedo_id = 2;
				threshold_index = THRESHOLD_INDEX_2;
				break;
			case 2:
				sku_info->cpu_speedo_id = 4;
				sku_info->soc_speedo_id = 1;
				threshold_index = THRESHOLD_INDEX_7;
				break;
			default:
				pr_err("Tegra Unknown pkg %d\n", package_id);
				break;
			}
			break;
		case 0x80:
			switch (package_id) {
			case 1:
				sku_info->cpu_speedo_id = 5;
				sku_info->soc_speedo_id = 2;
				threshold_index = THRESHOLD_INDEX_8;
				break;
			case 2:
				sku_info->cpu_speedo_id = 6;
				sku_info->soc_speedo_id = 2;
				threshold_index = THRESHOLD_INDEX_9;
				break;
			default:
				pr_err("Tegra Unknown pkg %d\n", package_id);
				break;
			}
			break;
		case 0x83:
			switch (package_id) {
			case 1:
				sku_info->cpu_speedo_id = 7;
				sku_info->soc_speedo_id = 1;
				threshold_index = THRESHOLD_INDEX_10;
				break;
			case 2:
				sku_info->cpu_speedo_id = 3;
				sku_info->soc_speedo_id = 2;
				threshold_index = THRESHOLD_INDEX_3;
				break;
			default:
				pr_err("Tegra Unknown pkg %d\n", package_id);
				break;
			}
			break;
		case 0x8F:
			sku_info->cpu_speedo_id = 8;
			sku_info->soc_speedo_id = 1;
			threshold_index = THRESHOLD_INDEX_11;
			break;
		case 0x08:
			sku_info->cpu_speedo_id = 1;
			sku_info->soc_speedo_id = 1;
			threshold_index = THRESHOLD_INDEX_4;
			break;
		case 0x02:
			sku_info->cpu_speedo_id = 2;
			sku_info->soc_speedo_id = 2;
			threshold_index = THRESHOLD_INDEX_5;
			break;
		case 0x04:
			sku_info->cpu_speedo_id = 3;
			sku_info->soc_speedo_id = 2;
			threshold_index = THRESHOLD_INDEX_6;
			break;
		case 0:
			switch (package_id) {
			case 1:
				sku_info->cpu_speedo_id = 2;
				sku_info->soc_speedo_id = 2;
				threshold_index = THRESHOLD_INDEX_2;
				break;
			case 2:
				sku_info->cpu_speedo_id = 3;
				sku_info->soc_speedo_id = 2;
				threshold_index = THRESHOLD_INDEX_3;
				break;

Annotation

• Immediate include surface: `linux/bug.h`, `linux/device.h`, `linux/kernel.h`, `soc/tegra/fuse.h`, `fuse.h`.
• Detected declarations: `function fuse_speedo_calib`, `function rev_sku_to_speedo_ids`, `function tegra30_init_speedo_data`.
• Atlas domain: Driver Families / drivers/soc.
• 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.