arch/arm/mach-s3c/platformdata.c

Source file repositories/reference/linux-study-clean/arch/arm/mach-s3c/platformdata.c

File Facts

System
Linux kernel
Corpus path
arch/arm/mach-s3c/platformdata.c
Extension
.c
Size
1232 bytes
Lines
54
Domain
Architecture Layer
Bucket
arch/arm
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
//
// Copyright 2010 Ben Dooks <ben-linux <at> fluff.org>
//
// Helper for platform data setting

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/platform_device.h>

#include "devs.h"
#include "sdhci.h"

void __init *s3c_set_platdata(void *pd, size_t pdsize,
			      struct platform_device *pdev)
{
	void *npd;

	if (!pd) {
		/* too early to use dev_name(), may not be registered */
		printk(KERN_ERR "%s: no platform data supplied\n", pdev->name);
		return NULL;
	}

	npd = kmemdup(pd, pdsize, GFP_KERNEL);
	if (!npd)
		return NULL;

	pdev->dev.platform_data = npd;
	return npd;
}

void s3c_sdhci_set_platdata(struct s3c_sdhci_platdata *pd,
			     struct s3c_sdhci_platdata *set)
{
	set->cd_type = pd->cd_type;
	set->ext_cd_init = pd->ext_cd_init;
	set->ext_cd_cleanup = pd->ext_cd_cleanup;
	set->ext_cd_gpio = pd->ext_cd_gpio;
	set->ext_cd_gpio_invert = pd->ext_cd_gpio_invert;

	if (pd->max_width)
		set->max_width = pd->max_width;
	if (pd->cfg_gpio)
		set->cfg_gpio = pd->cfg_gpio;
	if (pd->host_caps)
		set->host_caps |= pd->host_caps;
	if (pd->host_caps2)
		set->host_caps2 |= pd->host_caps2;
	if (pd->pm_caps)
		set->pm_caps |= pd->pm_caps;
}

Annotation

Implementation Notes