// SPDX-License-Identifier: GPL-2.0+ /* * Freescale i.MX27 RTC Driver * * Copyright (C) 2012 Philippe Reynes <tremyfr@yahoo.fr> */ #include <common.h> #include <rtc.h> #include <asm/io.h> #include <asm/arch/imx-regs.h> #define HOUR_SHIFT 8 #define HOUR_MASK 0x1f #define MIN_SHIFT 0 #define MIN_MASK 0x3f int rtc_get(struct rtc_time *time) { struct rtc_regs *rtc_regs = (struct rtc_regs *)IMX_RTC_BASE; uint32_t day, hour, min, sec; day = readl(&rtc_regs->dayr); hour = readl(&rtc_regs->hourmin); sec = readl(&rtc_regs->seconds); min = (hour >> MIN_SHIFT) & MIN_MASK; hour = (hour >> HOUR_SHIFT) & HOUR_MASK; sec += min * 60 + hour * 3600 + day * 24 * 3600; rtc_to_tm(sec, time); return 0; } int rtc_set(struct rtc_time *time) { struct rtc_regs *rtc_regs = (struct rtc_regs *)IMX_RTC_BASE; uint32_t day, hour, min, sec; sec = rtc_mktime(time); day = sec / (24 * 3600); sec = sec % (24 * 3600); hour = sec / 3600; sec = sec % 3600; min = sec / 60; sec = sec % 60; hour = (hour & HOUR_MASK) << HOUR_SHIFT; hour |= (min & MIN_MASK) << MIN_SHIFT; writel(day, &rtc_regs->dayr); writel(hour, &rtc_regs->hourmin); writel(sec, &rtc_regs->seconds); return 0; } void rtc_reset(void) { /* nothing to do */ }