![Alexander Shiyan](/assets/img/avatar_default.png)
Gets rid of these warnings when compile module for 64 bit targets: CC drivers/mfd/syscon.o drivers/mfd/syscon.c: In function 'syscon_probe': drivers/mfd/syscon.c:155:2: warning: format '%x' expects argument of type 'unsigned int', but argument 3 has type 'resource_size_t' [-Wformat] drivers/mfd/syscon.c:155:2: warning: format '%x' expects argument of type 'unsigned int', but argument 4 has type 'resource_size_t' [-Wformat] Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
190 lines
4.2 KiB
C
190 lines
4.2 KiB
C
/*
|
|
* System Control Driver
|
|
*
|
|
* Copyright (C) 2012 Freescale Semiconductor, Inc.
|
|
* Copyright (C) 2012 Linaro Ltd.
|
|
*
|
|
* Author: Dong Aisheng <dong.aisheng@linaro.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/io.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/mfd/syscon.h>
|
|
|
|
static struct platform_driver syscon_driver;
|
|
|
|
struct syscon {
|
|
void __iomem *base;
|
|
struct regmap *regmap;
|
|
};
|
|
|
|
static int syscon_match_node(struct device *dev, void *data)
|
|
{
|
|
struct device_node *dn = data;
|
|
|
|
return (dev->of_node == dn) ? 1 : 0;
|
|
}
|
|
|
|
struct regmap *syscon_node_to_regmap(struct device_node *np)
|
|
{
|
|
struct syscon *syscon;
|
|
struct device *dev;
|
|
|
|
dev = driver_find_device(&syscon_driver.driver, NULL, np,
|
|
syscon_match_node);
|
|
if (!dev)
|
|
return ERR_PTR(-EPROBE_DEFER);
|
|
|
|
syscon = dev_get_drvdata(dev);
|
|
|
|
return syscon->regmap;
|
|
}
|
|
EXPORT_SYMBOL_GPL(syscon_node_to_regmap);
|
|
|
|
struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
|
|
{
|
|
struct device_node *syscon_np;
|
|
struct regmap *regmap;
|
|
|
|
syscon_np = of_find_compatible_node(NULL, NULL, s);
|
|
if (!syscon_np)
|
|
return ERR_PTR(-ENODEV);
|
|
|
|
regmap = syscon_node_to_regmap(syscon_np);
|
|
of_node_put(syscon_np);
|
|
|
|
return regmap;
|
|
}
|
|
EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_compatible);
|
|
|
|
static int syscon_match_pdevname(struct device *dev, void *data)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
const struct platform_device_id *id = platform_get_device_id(pdev);
|
|
|
|
if (id)
|
|
if (!strcmp(id->name, (const char *)data))
|
|
return 1;
|
|
|
|
return !strcmp(dev_name(dev), (const char *)data);
|
|
}
|
|
|
|
struct regmap *syscon_regmap_lookup_by_pdevname(const char *s)
|
|
{
|
|
struct device *dev;
|
|
struct syscon *syscon;
|
|
|
|
dev = driver_find_device(&syscon_driver.driver, NULL, (void *)s,
|
|
syscon_match_pdevname);
|
|
if (!dev)
|
|
return ERR_PTR(-EPROBE_DEFER);
|
|
|
|
syscon = dev_get_drvdata(dev);
|
|
|
|
return syscon->regmap;
|
|
}
|
|
EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_pdevname);
|
|
|
|
struct regmap *syscon_regmap_lookup_by_phandle(struct device_node *np,
|
|
const char *property)
|
|
{
|
|
struct device_node *syscon_np;
|
|
struct regmap *regmap;
|
|
|
|
syscon_np = of_parse_phandle(np, property, 0);
|
|
if (!syscon_np)
|
|
return ERR_PTR(-ENODEV);
|
|
|
|
regmap = syscon_node_to_regmap(syscon_np);
|
|
of_node_put(syscon_np);
|
|
|
|
return regmap;
|
|
}
|
|
EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_phandle);
|
|
|
|
static const struct of_device_id of_syscon_match[] = {
|
|
{ .compatible = "syscon", },
|
|
{ },
|
|
};
|
|
|
|
static struct regmap_config syscon_regmap_config = {
|
|
.reg_bits = 32,
|
|
.val_bits = 32,
|
|
.reg_stride = 4,
|
|
};
|
|
|
|
static int syscon_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct syscon *syscon;
|
|
struct resource *res;
|
|
|
|
syscon = devm_kzalloc(dev, sizeof(*syscon), GFP_KERNEL);
|
|
if (!syscon)
|
|
return -ENOMEM;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!res)
|
|
return -ENOENT;
|
|
|
|
syscon->base = devm_ioremap(dev, res->start, resource_size(res));
|
|
if (!syscon->base)
|
|
return -ENOMEM;
|
|
|
|
syscon_regmap_config.max_register = res->end - res->start - 3;
|
|
syscon->regmap = devm_regmap_init_mmio(dev, syscon->base,
|
|
&syscon_regmap_config);
|
|
if (IS_ERR(syscon->regmap)) {
|
|
dev_err(dev, "regmap init failed\n");
|
|
return PTR_ERR(syscon->regmap);
|
|
}
|
|
|
|
platform_set_drvdata(pdev, syscon);
|
|
|
|
dev_info(dev, "regmap %pR registered\n", res);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct platform_device_id syscon_ids[] = {
|
|
{ "syscon", },
|
|
{ }
|
|
};
|
|
|
|
static struct platform_driver syscon_driver = {
|
|
.driver = {
|
|
.name = "syscon",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = of_syscon_match,
|
|
},
|
|
.probe = syscon_probe,
|
|
.id_table = syscon_ids,
|
|
};
|
|
|
|
static int __init syscon_init(void)
|
|
{
|
|
return platform_driver_register(&syscon_driver);
|
|
}
|
|
postcore_initcall(syscon_init);
|
|
|
|
static void __exit syscon_exit(void)
|
|
{
|
|
platform_driver_unregister(&syscon_driver);
|
|
}
|
|
module_exit(syscon_exit);
|
|
|
|
MODULE_AUTHOR("Dong Aisheng <dong.aisheng@linaro.org>");
|
|
MODULE_DESCRIPTION("System Control driver");
|
|
MODULE_LICENSE("GPL v2");
|