drivers/clk/ti/clkt_dpll.c

File Facts

System

Linux kernel

Corpus path

drivers/clk/ti/clkt_dpll.c

Extension

.c

Size

10503 bytes

Lines

372

Domain

Driver Families

Bucket

drivers/clk

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/kernel.h
• linux/errno.h
• linux/clk.h
• linux/clk-provider.h
• linux/io.h
• linux/clk/ti.h
• asm/div64.h
• clock.h

Detected Declarations

• function Copyright
• function _dpll_compute_new_rate
• function _dpll_test_mult
• function _omap2_dpll_is_in_bypass
• function omap2_init_dpll_parent
• function rate
• function set_rate

Annotated Snippet

if (delta < prev_min_delta) {
			prev_min_delta = delta;
			min_delta_m = m;
			min_delta_n = n;
		}

		pr_debug("clock: %s: m = %d: n = %d: new_rate = %lu\n",
			 clk_name, m, n, new_rate);

		if (delta == 0)
			break;
	}

	if (prev_min_delta == LONG_MAX) {
		pr_debug("clock: %s: cannot round to rate %lu\n",
			 clk_name, req->rate);
		return -EINVAL;
	}

	dd->last_rounded_m = min_delta_m;
	dd->last_rounded_n = min_delta_n;
	dd->last_rounded_rate = req->rate - prev_min_delta;

	req->rate = dd->last_rounded_rate;

	return 0;
}

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/errno.h`, `linux/clk.h`, `linux/clk-provider.h`, `linux/io.h`, `linux/clk/ti.h`, `asm/div64.h`, `clock.h`.
• Detected declarations: `function Copyright`, `function _dpll_compute_new_rate`, `function _dpll_test_mult`, `function _omap2_dpll_is_in_bypass`, `function omap2_init_dpll_parent`, `function rate`, `function set_rate`.
• Atlas domain: Driver Families / drivers/clk.
• 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.