| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #pragma once |
| |
| #include <ddk/device.h> |
| #include <fuchsia/hardware/rtc/c/fidl.h> |
| #include <zircon/compiler.h> |
| |
| __BEGIN_CDECLS |
| |
| // Basic validation that |rtc| has reasonable values. Does not check leap year. |
| bool rtc_is_invalid(const fuchsia_hardware_rtc_Time* rtc); |
| |
| // Computes seconds (Unix epoch) to |rtc|. Does not validate. Does not handle times |
| // earlier than 2000/1/1T00:00:00. |
| uint64_t seconds_since_epoch(const fuchsia_hardware_rtc_Time* rtc); |
| void seconds_to_rtc(uint64_t seconds, fuchsia_hardware_rtc_Time* rtc); |
| |
| // Validates and cleans what an RTC device |dev| returns. If the device returns |
| // nonsensical values, it sets |rtc| to 2018/1/1T00:00:00. |
| void sanitize_rtc(void* ctx, fuchsia_hardware_rtc_Time* rtc, |
| zx_status_t (*rtc_get)(void*, fuchsia_hardware_rtc_Time*), |
| zx_status_t (*rtc_set)(void*, const fuchsia_hardware_rtc_Time*)); |
| |
| // Utility binary-coded-decimal routines. |
| uint8_t to_bcd(uint8_t binary); |
| uint8_t from_bcd(uint8_t bcd); |
| |
| __END_CDECLS |
