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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(rtc_sandbox) = {
- .name = "rtc-sandbox",
- .id = UCLASS_RTC,
- .of_match = sandbox_rtc_ids,
- .ops = &sandbox_rtc_ops,
- ACPI_OPS_PTR(&sandbox_rtc_acpi_ops)
- };
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