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mfd: syscon: Add platform data with a regmap config name 

Define syscon platform data structure that can be used
to define a regmap config name. This is particularly useful
in the regmap debugfs when there is more than one syscon
device registered, to distinguish the register blocks.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Pawel Moll 2014-02-12 10:47:10 +00:00
parent 3b9334ac83
commit 29f9b6cf7b
2 changed files with 12 additions and 0 deletions
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4
drivers/mfd/syscon.c
View File

@ -18,6 +18,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/platform_data/syscon.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
@ -119,6 +120,7 @@ static struct regmap_config syscon_regmap_config = {
static int syscon_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct syscon_platform_data *pdata = dev_get_platdata(dev);
struct syscon *syscon;
struct resource *res;
void __iomem *base;
@ -136,6 +138,8 @@ static int syscon_probe(struct platform_device *pdev)
return -ENOMEM;
syscon_regmap_config.max_register = res->end - res->start - 3;
if (pdata)
syscon_regmap_config.name = pdata->label;
syscon->regmap = devm_regmap_init_mmio(dev, base,
&syscon_regmap_config);
if (IS_ERR(syscon->regmap)) {

8
include/linux/platform_data/syscon.h Normal file
View File

@ -0,0 +1,8 @@
#ifndef PLATFORM_DATA_SYSCON_H
#define PLATFORM_DATA_SYSCON_H
struct syscon_platform_data {
const char *label;
};
#endif