Release 4.14 drivers/rtc/rtc-sun4v.c
/* rtc-sun4v.c: Hypervisor based RTC for SUN4V systems.
*
* Author: David S. Miller
* License: GPL
*
* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/rtc.h>
#include <linux/platform_device.h>
#include <asm/hypervisor.h>
static unsigned long hypervisor_get_time(void)
{
unsigned long ret, time;
int retries = 10000;
retry:
ret = sun4v_tod_get(&time);
if (ret == HV_EOK)
return time;
if (ret == HV_EWOULDBLOCK) {
if (--retries > 0) {
udelay(100);
goto retry;
}
pr_warn("tod_get() timed out.\n");
return 0;
}
pr_warn("tod_get() not supported.\n");
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 76 | 95.00% | 1 | 50.00% |
| Jingoo Han | 4 | 5.00% | 1 | 50.00% |
| Total | 80 | 100.00% | 2 | 100.00% |
static int sun4v_read_time(struct device *dev, struct rtc_time *tm)
{
rtc_time_to_tm(hypervisor_get_time(), tm);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 26 | 96.30% | 1 | 50.00% |
| Alessandro Zummo | 1 | 3.70% | 1 | 50.00% |
| Total | 27 | 100.00% | 2 | 100.00% |
static int hypervisor_set_time(unsigned long secs)
{
unsigned long ret;
int retries = 10000;
retry:
ret = sun4v_tod_set(secs);
if (ret == HV_EOK)
return 0;
if (ret == HV_EWOULDBLOCK) {
if (--retries > 0) {
udelay(100);
goto retry;
}
pr_warn("tod_set() timed out.\n");
return -EAGAIN;
}
pr_warn("tod_set() not supported.\n");
return -EOPNOTSUPP;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 76 | 95.00% | 1 | 50.00% |
| Jingoo Han | 4 | 5.00% | 1 | 50.00% |
| Total | 80 | 100.00% | 2 | 100.00% |
static int sun4v_set_time(struct device *dev, struct rtc_time *tm)
{
unsigned long secs;
int err;
err = rtc_tm_to_time(tm, &secs);
if (err)
return err;
return hypervisor_set_time(secs);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 45 | 97.83% | 1 | 50.00% |
| Alessandro Zummo | 1 | 2.17% | 1 | 50.00% |
| Total | 46 | 100.00% | 2 | 100.00% |
static const struct rtc_class_ops sun4v_rtc_ops = {
.read_time = sun4v_read_time,
.set_time = sun4v_set_time,
};
static int __init sun4v_rtc_probe(struct platform_device *pdev)
{
struct rtc_device *rtc;
rtc = devm_rtc_device_register(&pdev->dev, "sun4v",
&sun4v_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc))
return PTR_ERR(rtc);
platform_set_drvdata(pdev, rtc);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 46 | 80.70% | 1 | 33.33% |
| Jingoo Han | 7 | 12.28% | 1 | 33.33% |
| Alessandro Zummo | 4 | 7.02% | 1 | 33.33% |
| Total | 57 | 100.00% | 3 | 100.00% |
static struct platform_driver sun4v_rtc_driver = {
.driver = {
.name = "rtc-sun4v",
},
};
builtin_platform_driver_probe(sun4v_rtc_driver, sun4v_rtc_probe);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 326 | 91.06% | 1 | 20.00% |
| Jingoo Han | 22 | 6.15% | 2 | 40.00% |
| Alessandro Zummo | 8 | 2.23% | 1 | 20.00% |
| Paul Gortmaker | 2 | 0.56% | 1 | 20.00% |
| Total | 358 | 100.00% | 5 | 100.00% |
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