mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 21:24:29 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
121 lines
2.6 KiB
C
121 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Faraday FTRTC010 Real Time Clock
|
|
*
|
|
* (C) Copyright 2009 Faraday Technology
|
|
* Po-Yu Chuang <ratbert@faraday-tech.com>
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <common.h>
|
|
#include <rtc.h>
|
|
#include <asm/io.h>
|
|
|
|
struct ftrtc010 {
|
|
unsigned int sec; /* 0x00 */
|
|
unsigned int min; /* 0x04 */
|
|
unsigned int hour; /* 0x08 */
|
|
unsigned int day; /* 0x0c */
|
|
unsigned int alarm_sec; /* 0x10 */
|
|
unsigned int alarm_min; /* 0x14 */
|
|
unsigned int alarm_hour; /* 0x18 */
|
|
unsigned int record; /* 0x1c */
|
|
unsigned int cr; /* 0x20 */
|
|
unsigned int wsec; /* 0x24 */
|
|
unsigned int wmin; /* 0x28 */
|
|
unsigned int whour; /* 0x2c */
|
|
unsigned int wday; /* 0x30 */
|
|
unsigned int intr; /* 0x34 */
|
|
unsigned int div; /* 0x38 */
|
|
unsigned int rev; /* 0x3c */
|
|
};
|
|
|
|
/*
|
|
* RTC Control Register
|
|
*/
|
|
#define FTRTC010_CR_ENABLE (1 << 0)
|
|
#define FTRTC010_CR_INTERRUPT_SEC (1 << 1) /* per second irq */
|
|
#define FTRTC010_CR_INTERRUPT_MIN (1 << 2) /* per minute irq */
|
|
#define FTRTC010_CR_INTERRUPT_HR (1 << 3) /* per hour irq */
|
|
#define FTRTC010_CR_INTERRUPT_DAY (1 << 4) /* per day irq */
|
|
|
|
static struct ftrtc010 *rtc = (struct ftrtc010 *)CONFIG_FTRTC010_BASE;
|
|
|
|
static void ftrtc010_enable(void)
|
|
{
|
|
writel(FTRTC010_CR_ENABLE, &rtc->cr);
|
|
}
|
|
|
|
/*
|
|
* return current time in seconds
|
|
*/
|
|
static unsigned long ftrtc010_time(void)
|
|
{
|
|
unsigned long day;
|
|
unsigned long hour;
|
|
unsigned long minute;
|
|
unsigned long second;
|
|
unsigned long second2;
|
|
|
|
do {
|
|
second = readl(&rtc->sec);
|
|
day = readl(&rtc->day);
|
|
hour = readl(&rtc->hour);
|
|
minute = readl(&rtc->min);
|
|
second2 = readl(&rtc->sec);
|
|
} while (second != second2);
|
|
|
|
return day * 24 * 60 * 60 + hour * 60 * 60 + minute * 60 + second;
|
|
}
|
|
|
|
/*
|
|
* Get the current time from the RTC
|
|
*/
|
|
|
|
int rtc_get(struct rtc_time *tmp)
|
|
{
|
|
unsigned long now;
|
|
|
|
debug("%s(): record register: %x\n",
|
|
__func__, readl(&rtc->record));
|
|
|
|
#ifdef CONFIG_FTRTC010_PCLK
|
|
now = (ftrtc010_time() + readl(&rtc->record)) / RTC_DIV_COUNT;
|
|
#else /* CONFIG_FTRTC010_EXTCLK */
|
|
now = ftrtc010_time() + readl(&rtc->record);
|
|
#endif
|
|
|
|
rtc_to_tm(now, tmp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Set the RTC
|
|
*/
|
|
int rtc_set(struct rtc_time *tmp)
|
|
{
|
|
unsigned long new;
|
|
unsigned long now;
|
|
|
|
debug("%s(): DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
|
|
__func__,
|
|
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
|
|
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
|
|
|
|
new = rtc_mktime(tmp);
|
|
|
|
now = ftrtc010_time();
|
|
|
|
debug("%s(): write %lx to record register\n", __func__, new - now);
|
|
|
|
writel(new - now, &rtc->record);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void rtc_reset(void)
|
|
{
|
|
debug("%s()\n", __func__);
|
|
ftrtc010_enable();
|
|
}
|