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>
72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Freescale i.MX28 RTC Driver
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*
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* Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
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* on behalf of DENX Software Engineering GmbH
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*/
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#include <common.h>
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#include <rtc.h>
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#include <asm/io.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/sys_proto.h>
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#define MXS_RTC_MAX_TIMEOUT 1000000
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/* Set time in seconds since 1970-01-01 */
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int mxs_rtc_set_time(uint32_t secs)
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{
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struct mxs_rtc_regs *rtc_regs = (struct mxs_rtc_regs *)MXS_RTC_BASE;
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int ret;
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writel(secs, &rtc_regs->hw_rtc_seconds);
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/*
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* The 0x80 here means seconds were copied to analog. This information
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* is taken from the linux kernel driver for the STMP37xx RTC since
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* documentation doesn't mention it.
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*/
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ret = mxs_wait_mask_clr(&rtc_regs->hw_rtc_stat_reg,
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0x80 << RTC_STAT_STALE_REGS_OFFSET, MXS_RTC_MAX_TIMEOUT);
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if (ret)
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printf("MXS RTC: Timeout waiting for update\n");
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return ret;
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}
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int rtc_get(struct rtc_time *time)
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{
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struct mxs_rtc_regs *rtc_regs = (struct mxs_rtc_regs *)MXS_RTC_BASE;
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uint32_t secs;
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secs = readl(&rtc_regs->hw_rtc_seconds);
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rtc_to_tm(secs, time);
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return 0;
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}
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int rtc_set(struct rtc_time *time)
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{
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uint32_t secs;
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secs = rtc_mktime(time);
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return mxs_rtc_set_time(secs);
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}
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void rtc_reset(void)
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{
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struct mxs_rtc_regs *rtc_regs = (struct mxs_rtc_regs *)MXS_RTC_BASE;
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int ret;
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/* Set time to 1970-01-01 */
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mxs_rtc_set_time(0);
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/* Reset the RTC block */
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ret = mxs_reset_block(&rtc_regs->hw_rtc_ctrl_reg);
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if (ret)
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printf("MXS RTC: Block reset timeout\n");
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}
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