mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-09-22 07:32:03 +00:00
121a165c51
Header file version.h does not use anything from timestamp.h. Including of timestamp.h has side effect which cause recompiling object file at every make run because timestamp.h changes at every run. So remove timestamp.h from version.h and include timestamp.h in files which needs it. This change reduce recompilation time of final U-Boot binary when U-Boot source files were not changed as less source files needs to be recompiled. Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com> [trini: Add in lib/acpi/acpi_table.c and test/dm/acpi.c, rework a few others] Signed-off-by: Tom Rini <trini@konsulko.com>
96 lines
1.8 KiB
C
96 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2020, Heinrich Schuchardt <xypron.glpk@gmx.de>
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*
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* This driver emulates a real time clock based on timer ticks.
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*/
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#include <common.h>
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#include <div64.h>
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#include <dm.h>
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#include <env.h>
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#include <rtc.h>
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#include <timestamp.h>
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/**
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* struct emul_rtc - private data for emulated RTC driver
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*/
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struct emul_rtc {
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/**
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* @offset_us: microseconds from 1970-01-01 to timer_get_us() base
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*/
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u64 offset_us;
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/**
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* @isdst: daylight saving time
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*/
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int isdst;
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};
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static int emul_rtc_get(struct udevice *dev, struct rtc_time *time)
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{
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struct emul_rtc *priv = dev_get_priv(dev);
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u64 now;
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now = timer_get_us() + priv->offset_us;
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do_div(now, 1000000);
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rtc_to_tm(now, time);
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time->tm_isdst = priv->isdst;
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return 0;
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}
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static int emul_rtc_set(struct udevice *dev, const struct rtc_time *time)
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{
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struct emul_rtc *priv = dev_get_priv(dev);
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if (time->tm_year < 1970)
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return -EINVAL;
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priv->offset_us = rtc_mktime(time) * 1000000ULL - timer_get_us();
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if (time->tm_isdst > 0)
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priv->isdst = 1;
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else if (time->tm_isdst < 0)
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priv->isdst = -1;
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else
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priv->isdst = 0;
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return 0;
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}
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int emul_rtc_probe(struct udevice *dev)
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{
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struct emul_rtc *priv = dev_get_priv(dev);
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const char *epoch_str;
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u64 epoch;
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epoch_str = env_get("rtc_emul_epoch");
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if (epoch_str) {
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epoch = simple_strtoull(epoch_str, NULL, 10);
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} else {
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/* Use the build date as initial time */
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epoch = U_BOOT_EPOCH;
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}
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priv->offset_us = epoch * 1000000ULL - timer_get_us();
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priv->isdst = -1;
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return 0;
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}
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static const struct rtc_ops emul_rtc_ops = {
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.get = emul_rtc_get,
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.set = emul_rtc_set,
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};
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U_BOOT_DRIVER(rtc_emul) = {
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.name = "rtc_emul",
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.id = UCLASS_RTC,
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.ops = &emul_rtc_ops,
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.probe = emul_rtc_probe,
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.priv_auto = sizeof(struct emul_rtc),
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};
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U_BOOT_DRVINFO(rtc_emul) = {
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.name = "rtc_emul",
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};
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