mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 20:13:39 +00:00
714209832d
Most callers unpack the structure and pass each member. It seems better to pass the whole structure instead, as with the C library. Also add an rtc_ prefix. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Heiko Schocher <hs@denx.de>
108 lines
2.1 KiB
C
108 lines
2.1 KiB
C
/*
|
|
* (C) Copyright 2008
|
|
* Gururaja Hebbar gururajakr@sanyo.co.in
|
|
*
|
|
* reference linux-2.6.20.6/drivers/rtc/rtc-pl031.c
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <rtc.h>
|
|
|
|
#if defined(CONFIG_CMD_DATE)
|
|
|
|
#ifndef CONFIG_SYS_RTC_PL031_BASE
|
|
#error CONFIG_SYS_RTC_PL031_BASE is not defined!
|
|
#endif
|
|
|
|
/*
|
|
* Register definitions
|
|
*/
|
|
#define RTC_DR 0x00 /* Data read register */
|
|
#define RTC_MR 0x04 /* Match register */
|
|
#define RTC_LR 0x08 /* Data load register */
|
|
#define RTC_CR 0x0c /* Control register */
|
|
#define RTC_IMSC 0x10 /* Interrupt mask and set register */
|
|
#define RTC_RIS 0x14 /* Raw interrupt status register */
|
|
#define RTC_MIS 0x18 /* Masked interrupt status register */
|
|
#define RTC_ICR 0x1c /* Interrupt clear register */
|
|
|
|
#define RTC_CR_START (1 << 0)
|
|
|
|
#define RTC_WRITE_REG(addr, val) \
|
|
(*(volatile unsigned int *)(CONFIG_SYS_RTC_PL031_BASE + (addr)) = (val))
|
|
#define RTC_READ_REG(addr) \
|
|
(*(volatile unsigned int *)(CONFIG_SYS_RTC_PL031_BASE + (addr)))
|
|
|
|
static int pl031_initted = 0;
|
|
|
|
/* Enable RTC Start in Control register*/
|
|
void rtc_init(void)
|
|
{
|
|
RTC_WRITE_REG(RTC_CR, RTC_CR_START);
|
|
|
|
pl031_initted = 1;
|
|
}
|
|
|
|
/*
|
|
* Reset the RTC. We set the date back to 1970-01-01.
|
|
*/
|
|
void rtc_reset(void)
|
|
{
|
|
RTC_WRITE_REG(RTC_LR, 0x00);
|
|
if(!pl031_initted)
|
|
rtc_init();
|
|
}
|
|
|
|
/*
|
|
* Set the RTC
|
|
*/
|
|
int rtc_set(struct rtc_time *tmp)
|
|
{
|
|
unsigned long tim;
|
|
|
|
if(!pl031_initted)
|
|
rtc_init();
|
|
|
|
if (tmp == NULL) {
|
|
puts("Error setting the date/time\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Calculate number of seconds this incoming time represents */
|
|
tim = rtc_mktime(tmp);
|
|
|
|
RTC_WRITE_REG(RTC_LR, tim);
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Get the current time from the RTC
|
|
*/
|
|
int rtc_get(struct rtc_time *tmp)
|
|
{
|
|
ulong tim;
|
|
|
|
if(!pl031_initted)
|
|
rtc_init();
|
|
|
|
if (tmp == NULL) {
|
|
puts("Error getting the date/time\n");
|
|
return -1;
|
|
}
|
|
|
|
tim = RTC_READ_REG(RTC_DR);
|
|
|
|
rtc_to_tm(tim, tmp);
|
|
|
|
debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
|
|
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
|
|
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|