drivers/staging/media/atomisp/pci/runtime/timer/src/timer.c

Source file repositories/reference/linux-study-clean/drivers/staging/media/atomisp/pci/runtime/timer/src/timer.c

File Facts

System
Linux kernel
Corpus path
drivers/staging/media/atomisp/pci/runtime/timer/src/timer.c
Extension
.c
Size
558 bytes
Lines
21
Domain
Driver Families
Bucket
drivers/staging
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
/*
 * Support for Intel Camera Imaging ISP subsystem.
 * Copyright (c) 2015, Intel Corporation.
 */

#include <type_support.h>		/* for uint32_t */
#include "ia_css_timer.h" /*struct ia_css_clock_tick */
#include "sh_css_legacy.h" /* IA_CSS_PIPE_ID_NUM*/
#include "gp_timer.h" /*gp_timer_read()*/
#include "assert_support.h"

int ia_css_timer_get_current_tick(struct ia_css_clock_tick *curr_ts)
{
	assert(curr_ts);
	if (!curr_ts)
		return -EINVAL;
	curr_ts->ticks = (clock_value_t)gp_timer_read(GP_TIMER_SEL);
	return 0;
}

Annotation

Implementation Notes