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ARM: SAMSUNG: Add helper to clone and set platform data 

This is intended to replace a number of sites in the Samsung kernel
where the same thing is being repeated in specific platform setting
code. See next patches for replacements.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
[kgene.kim@samsung.com: This is for building test]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Ben Dooks 2010-06-10 12:57:15 +09:00 committed by Kukjin Kim
parent 5db2bc8a11
commit 3911dab8ad
3 changed files with 51 additions and 0 deletions
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2
arch/arm/plat-samsung/Makefile
View File

@ -30,6 +30,8 @@ obj-$(CONFIG_S3C_ADC) += adc.o
# devices
obj-y += platformdata.o
obj-$(CONFIG_S3C_DEV_HSMMC) += dev-hsmmc.o
obj-$(CONFIG_S3C_DEV_HSMMC1) += dev-hsmmc1.o
obj-$(CONFIG_S3C_DEV_HSMMC2) += dev-hsmmc2.o

12
arch/arm/plat-samsung/include/plat/devs.h
View File

@ -108,3 +108,15 @@ extern struct platform_device s3c_device_camif;
extern struct platform_device s3c_device_ac97;
#endif
/**
* s3c_set_platdata() - helper for setting platform data
* @pd: The default platform data for this device.
* @pdsize: The size of the platform data.
* @pdev: Pointer to the device to fill in.
*
* This helper replaces a number of calls that copy and then set the
* platform data of the device.
*/
extern void *s3c_set_platdata(void *pd, size_t pdsize,
struct platform_device *pdev);

37
arch/arm/plat-samsung/platformdata.c Normal file
View File

@ -0,0 +1,37 @@
/* linux/arch/arm/plat-samsung/platformdata.c
*
* Copyright 2010 Ben Dooks <ben-linux <at> fluff.org>
*
* Helper for platform data setting
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/platform_device.h>
#include <plat/devs.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) {
printk(KERN_ERR "%s: cannot clone platform data\n", pdev->name);
return NULL;
}
pdev->dev.platform_data = npd;
return npd;
}