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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <dm.h>
#include <i2c.h>
#include <rtc.h>
#include <asm/rtc.h>
#include <dm/acpi.h>
#define REG_COUNT 0x80
static int sandbox_rtc_get(struct udevice *dev, struct rtc_time *time)
{
u8 buf[7];
int ret;
ret = dm_i2c_read(dev, REG_SEC, buf, sizeof(buf));
if (ret < 0)
return ret;
time->tm_sec = buf[REG_SEC - REG_SEC];
time->tm_min = buf[REG_MIN - REG_SEC];
time->tm_hour = buf[REG_HOUR - REG_SEC];
time->tm_mday = buf[REG_MDAY - REG_SEC];
time->tm_mon = buf[REG_MON - REG_SEC];
time->tm_year = buf[REG_YEAR - REG_SEC] + 1900;
time->tm_wday = buf[REG_WDAY - REG_SEC];
return 0;
}
static int sandbox_rtc_set(struct udevice *dev, const struct rtc_time *time)
{
u8 buf[7];
int ret;
buf[REG_SEC - REG_SEC] = time->tm_sec;
buf[REG_MIN - REG_SEC] = time->tm_min;
buf[REG_HOUR - REG_SEC] = time->tm_hour;
buf[REG_MDAY - REG_SEC] = time->tm_mday;
buf[REG_MON - REG_SEC] = time->tm_mon;
buf[REG_YEAR - REG_SEC] = time->tm_year - 1900;
buf[REG_WDAY - REG_SEC] = time->tm_wday;
ret = dm_i2c_write(dev, REG_SEC, buf, sizeof(buf));
if (ret < 0)
return ret;
return 0;
}
static int sandbox_rtc_reset(struct udevice *dev)
{
return dm_i2c_reg_write(dev, REG_RESET, 0);
}
static int sandbox_rtc_read8(struct udevice *dev, unsigned int reg)
{
return dm_i2c_reg_read(dev, reg);
}
static int sandbox_rtc_write8(struct udevice *dev, unsigned int reg, int val)
{
return dm_i2c_reg_write(dev, reg, val);
}
#if CONFIG_IS_ENABLED(ACPIGEN)
static int sandbox_rtc_get_name(const struct udevice *dev, char *out_name)
{
return acpi_copy_name(out_name, "RTCC");
}
struct acpi_ops sandbox_rtc_acpi_ops = {
.get_name = sandbox_rtc_get_name,
};
#endif
static const struct rtc_ops sandbox_rtc_ops = {
.get = sandbox_rtc_get,
.set = sandbox_rtc_set,
.reset = sandbox_rtc_reset,
.read8 = sandbox_rtc_read8,
.write8 = sandbox_rtc_write8,
};
static const struct udevice_id sandbox_rtc_ids[] = {
{ .compatible = "sandbox-rtc" },
{ }
};
U_BOOT_DRIVER(sandbox_rtc) = {
.name = "sandbox_rtc",
.id = UCLASS_RTC,
.of_match = sandbox_rtc_ids,
.ops = &sandbox_rtc_ops,
ACPI_OPS_PTR(&sandbox_rtc_acpi_ops)
};
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