mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
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>
180 lines
3.9 KiB
C
180 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Andreas Heppel <aheppel@sysgo.de>
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*/
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/*
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* Date & Time support for the MK48T59 RTC
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*/
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#undef RTC_DEBUG
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#include <common.h>
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#include <command.h>
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#include <config.h>
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#include <rtc.h>
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#include <mk48t59.h>
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#if defined(CONFIG_BAB7xx)
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static uchar rtc_read (short reg)
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{
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out8(RTC_PORT_ADDR0, reg & 0xFF);
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out8(RTC_PORT_ADDR1, (reg>>8) & 0xFF);
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return in8(RTC_PORT_DATA);
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}
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static void rtc_write (short reg, uchar val)
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{
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out8(RTC_PORT_ADDR0, reg & 0xFF);
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out8(RTC_PORT_ADDR1, (reg>>8) & 0xFF);
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out8(RTC_PORT_DATA, val);
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}
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#elif defined(CONFIG_EVAL5200)
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static uchar rtc_read (short reg)
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{
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return in8(RTC(reg));
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}
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static void rtc_write (short reg, uchar val)
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{
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out8(RTC(reg),val);
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}
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#else
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# error Board specific rtc access functions should be supplied
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#endif
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/* ------------------------------------------------------------------------- */
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void *nvram_read(void *dest, const short src, size_t count)
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{
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uchar *d = (uchar *) dest;
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short s = src;
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while (count--)
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*d++ = rtc_read(s++);
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return dest;
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}
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void nvram_write(short dest, const void *src, size_t count)
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{
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short d = dest;
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uchar *s = (uchar *) src;
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while (count--)
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rtc_write(d++, *s++);
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}
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#if defined(CONFIG_CMD_DATE)
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/* ------------------------------------------------------------------------- */
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int rtc_get (struct rtc_time *tmp)
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{
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uchar save_ctrl_a;
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uchar sec, min, hour, mday, wday, mon, year;
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/* Simple: freeze the clock, read it and allow updates again */
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save_ctrl_a = rtc_read(RTC_CONTROLA);
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/* Set the register to read the value. */
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save_ctrl_a |= RTC_CA_READ;
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rtc_write(RTC_CONTROLA, save_ctrl_a);
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sec = rtc_read (RTC_SECONDS);
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min = rtc_read (RTC_MINUTES);
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hour = rtc_read (RTC_HOURS);
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mday = rtc_read (RTC_DAY_OF_MONTH);
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wday = rtc_read (RTC_DAY_OF_WEEK);
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mon = rtc_read (RTC_MONTH);
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year = rtc_read (RTC_YEAR);
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/* re-enable update */
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save_ctrl_a &= ~RTC_CA_READ;
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rtc_write(RTC_CONTROLA, save_ctrl_a);
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#ifdef RTC_DEBUG
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printf ( "Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
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"hr: %02x min: %02x sec: %02x\n",
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year, mon, mday, wday,
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hour, min, sec );
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#endif
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tmp->tm_sec = bcd2bin (sec & 0x7F);
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tmp->tm_min = bcd2bin (min & 0x7F);
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tmp->tm_hour = bcd2bin (hour & 0x3F);
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tmp->tm_mday = bcd2bin (mday & 0x3F);
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tmp->tm_mon = bcd2bin (mon & 0x1F);
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tmp->tm_year = bcd2bin (year);
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tmp->tm_wday = bcd2bin (wday & 0x07);
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if(tmp->tm_year<70)
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tmp->tm_year+=2000;
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else
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tmp->tm_year+=1900;
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tmp->tm_yday = 0;
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tmp->tm_isdst= 0;
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#ifdef RTC_DEBUG
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printf ( "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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#endif
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return 0;
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}
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int rtc_set (struct rtc_time *tmp)
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{
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uchar save_ctrl_a;
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#ifdef RTC_DEBUG
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printf ( "Set 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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#endif
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save_ctrl_a = rtc_read(RTC_CONTROLA);
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save_ctrl_a |= RTC_CA_WRITE;
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rtc_write(RTC_CONTROLA, save_ctrl_a); /* disables the RTC to update the regs */
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rtc_write (RTC_YEAR, bin2bcd(tmp->tm_year % 100));
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rtc_write (RTC_MONTH, bin2bcd(tmp->tm_mon));
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rtc_write (RTC_DAY_OF_WEEK, bin2bcd(tmp->tm_wday));
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rtc_write (RTC_DAY_OF_MONTH, bin2bcd(tmp->tm_mday));
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rtc_write (RTC_HOURS, bin2bcd(tmp->tm_hour));
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rtc_write (RTC_MINUTES, bin2bcd(tmp->tm_min ));
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rtc_write (RTC_SECONDS, bin2bcd(tmp->tm_sec ));
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save_ctrl_a &= ~RTC_CA_WRITE;
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rtc_write(RTC_CONTROLA, save_ctrl_a); /* enables the RTC to update the regs */
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return 0;
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}
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void rtc_reset (void)
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{
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uchar control_b;
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/*
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* Start oscillator here.
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*/
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control_b = rtc_read(RTC_CONTROLB);
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control_b &= ~RTC_CB_STOP;
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rtc_write(RTC_CONTROLB, control_b);
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}
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void rtc_set_watchdog(short multi, short res)
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{
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uchar wd_value;
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wd_value = RTC_WDS | ((multi & 0x1F) << 2) | (res & 0x3);
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rtc_write(RTC_WATCHDOG, wd_value);
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}
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#endif
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