drivers/staging/media/atomisp/pci/ia_css_device_access.c

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

File Facts

System
Linux kernel
Corpus path
drivers/staging/media/atomisp/pci/ia_css_device_access.c
Extension
.c
Size
1622 bytes
Lines
88
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 "ia_css_device_access.h"
#include <type_support.h>   /* for uint*, size_t */
#include <system_local.h>   /* for hrt_address */
#include <ia_css_env.h>     /* for ia_css_hw_access_env */
#include <assert_support.h> /* for assert */

static struct ia_css_hw_access_env my_env;

void
ia_css_device_access_init(const struct ia_css_hw_access_env *env)
{
	assert(env);

	my_env = *env;
}

uint8_t
ia_css_device_load_uint8(const hrt_address addr)
{
	return my_env.load_8(addr);
}

uint16_t
ia_css_device_load_uint16(const hrt_address addr)
{
	return my_env.load_16(addr);
}

uint32_t
ia_css_device_load_uint32(const hrt_address addr)
{
	return my_env.load_32(addr);
}

uint64_t
ia_css_device_load_uint64(const hrt_address addr)
{
	assert(0);

	(void)addr;
	return 0;
}

void
ia_css_device_store_uint8(const hrt_address addr, const uint8_t data)
{
	my_env.store_8(addr, data);
}

void
ia_css_device_store_uint16(const hrt_address addr, const uint16_t data)
{
	my_env.store_16(addr, data);
}

void
ia_css_device_store_uint32(const hrt_address addr, const uint32_t data)
{
	my_env.store_32(addr, data);
}

void
ia_css_device_store_uint64(const hrt_address addr, const uint64_t data)
{
	assert(0);

	(void)addr;
	(void)data;
}

void
ia_css_device_load(const hrt_address addr, void *data, const size_t size)
{
	my_env.load(addr, data, (uint32_t)size);
}

void
ia_css_device_store(const hrt_address addr, const void *data, const size_t size)
{
	my_env.store(addr, data, (uint32_t)size);
}

Annotation

Implementation Notes