mirror of
https://github.com/brain-hackers/u-boot-brain
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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>
108 lines
2.1 KiB
C
108 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2008
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* Gururaja Hebbar gururajakr@sanyo.co.in
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*
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* reference linux-2.6.20.6/drivers/rtc/rtc-pl031.c
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*/
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#include <common.h>
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#include <command.h>
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#include <rtc.h>
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#if defined(CONFIG_CMD_DATE)
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#ifndef CONFIG_SYS_RTC_PL031_BASE
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#error CONFIG_SYS_RTC_PL031_BASE is not defined!
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#endif
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/*
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* Register definitions
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*/
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#define RTC_DR 0x00 /* Data read register */
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#define RTC_MR 0x04 /* Match register */
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#define RTC_LR 0x08 /* Data load register */
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#define RTC_CR 0x0c /* Control register */
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#define RTC_IMSC 0x10 /* Interrupt mask and set register */
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#define RTC_RIS 0x14 /* Raw interrupt status register */
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#define RTC_MIS 0x18 /* Masked interrupt status register */
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#define RTC_ICR 0x1c /* Interrupt clear register */
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#define RTC_CR_START (1 << 0)
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#define RTC_WRITE_REG(addr, val) \
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(*(volatile unsigned int *)(CONFIG_SYS_RTC_PL031_BASE + (addr)) = (val))
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#define RTC_READ_REG(addr) \
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(*(volatile unsigned int *)(CONFIG_SYS_RTC_PL031_BASE + (addr)))
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static int pl031_initted = 0;
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/* Enable RTC Start in Control register*/
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void rtc_init(void)
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{
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RTC_WRITE_REG(RTC_CR, RTC_CR_START);
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pl031_initted = 1;
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}
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/*
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* Reset the RTC. We set the date back to 1970-01-01.
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*/
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void rtc_reset(void)
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{
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RTC_WRITE_REG(RTC_LR, 0x00);
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if(!pl031_initted)
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rtc_init();
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}
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/*
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* Set the RTC
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*/
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int rtc_set(struct rtc_time *tmp)
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{
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unsigned long tim;
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if(!pl031_initted)
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rtc_init();
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if (tmp == NULL) {
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puts("Error setting the date/time\n");
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return -1;
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}
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/* Calculate number of seconds this incoming time represents */
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tim = rtc_mktime(tmp);
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RTC_WRITE_REG(RTC_LR, tim);
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return -1;
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}
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/*
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* Get the current time from the RTC
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*/
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int rtc_get(struct rtc_time *tmp)
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{
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ulong tim;
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if(!pl031_initted)
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rtc_init();
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if (tmp == NULL) {
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puts("Error getting the date/time\n");
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return -1;
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}
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tim = RTC_READ_REG(RTC_DR);
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rtc_to_tm(tim, tmp);
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debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
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tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
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tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
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return 0;
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}
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#endif
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