Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| John Crispin |
171 |
95.00% |
1 |
25.00% |
| Rob Herring |
4 |
2.22% |
1 |
25.00% |
| ye xingchen |
3 |
1.67% |
1 |
25.00% |
| Thomas Gleixner |
2 |
1.11% |
1 |
25.00% |
| Total |
180 |
|
4 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
*
* Copyright (C) 2012 John Crispin <john@phrozen.org>
* Copyright (C) 2010 Sameer Ahmad, Lantiq GmbH
*/
#include <linux/ioport.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include <lantiq_soc.h>
/* Bias and regulator Setup Register */
#define DCDC_BIAS_VREG0 0xa
/* Bias and regulator Setup Register */
#define DCDC_BIAS_VREG1 0xb
#define dcdc_w8(x, y) ltq_w8((x), dcdc_membase + (y))
#define dcdc_r8(x) ltq_r8(dcdc_membase + (x))
static void __iomem *dcdc_membase;
static int dcdc_probe(struct platform_device *pdev)
{
dcdc_membase = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
if (IS_ERR(dcdc_membase))
return PTR_ERR(dcdc_membase);
dev_info(&pdev->dev, "Core Voltage : %d mV\n",
dcdc_r8(DCDC_BIAS_VREG1) * 8);
return 0;
}
static const struct of_device_id dcdc_match[] = {
{ .compatible = "lantiq,dcdc-xrx200" },
{},
};
static struct platform_driver dcdc_driver = {
.probe = dcdc_probe,
.driver = {
.name = "dcdc-xrx200",
.of_match_table = dcdc_match,
},
};
int __init dcdc_init(void)
{
int ret = platform_driver_register(&dcdc_driver);
if (ret)
pr_info("dcdc: Error registering platform driver\n");
return ret;
}
arch_initcall(dcdc_init);