drivers/clk/mxs/clk.c

Source file repositories/reference/linux-study-clean/drivers/clk/mxs/clk.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/mxs/clk.c
Extension
.c
Size
468 bytes
Lines
24
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.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright 2012 Freescale Semiconductor, Inc.
 */

#include <linux/err.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/spinlock.h>
#include "clk.h"

DEFINE_SPINLOCK(mxs_lock);

int mxs_clk_wait(void __iomem *reg, u8 shift)
{
	unsigned long timeout = jiffies + msecs_to_jiffies(10);

	while (readl_relaxed(reg) & (1 << shift))
		if (time_after(jiffies, timeout))
			return -ETIMEDOUT;

	return 0;
}

Annotation

Implementation Notes