// 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 <errno.h> #include <rtc.h> int dm_rtc_get(struct udevice *dev, struct rtc_time *time) { struct rtc_ops *ops = rtc_get_ops(dev); assert(ops); if (!ops->get) return -ENOSYS; return ops->get(dev, time); } int dm_rtc_set(struct udevice *dev, struct rtc_time *time) { struct rtc_ops *ops = rtc_get_ops(dev); assert(ops); if (!ops->set) return -ENOSYS; return ops->set(dev, time); } int dm_rtc_reset(struct udevice *dev) { struct rtc_ops *ops = rtc_get_ops(dev); assert(ops); if (!ops->reset) return -ENOSYS; return ops->reset(dev); } int rtc_read8(struct udevice *dev, unsigned int reg) { struct rtc_ops *ops = rtc_get_ops(dev); assert(ops); if (!ops->read8) return -ENOSYS; return ops->read8(dev, reg); } int rtc_write8(struct udevice *dev, unsigned int reg, int val) { struct rtc_ops *ops = rtc_get_ops(dev); assert(ops); if (!ops->write8) return -ENOSYS; return ops->write8(dev, reg, val); } int rtc_read16(struct udevice *dev, unsigned int reg, u16 *valuep) { u16 value = 0; int ret; int i; for (i = 0; i < sizeof(value); i++) { ret = rtc_read8(dev, reg + i); if (ret < 0) return ret; value |= ret << (i << 3); } *valuep = value; return 0; } int rtc_write16(struct udevice *dev, unsigned int reg, u16 value) { int i, ret; for (i = 0; i < sizeof(value); i++) { ret = rtc_write8(dev, reg + i, (value >> (i << 3)) & 0xff); if (ret) return ret; } return 0; } int rtc_read32(struct udevice *dev, unsigned int reg, u32 *valuep) { u32 value = 0; int ret; int i; for (i = 0; i < sizeof(value); i++) { ret = rtc_read8(dev, reg + i); if (ret < 0) return ret; value |= ret << (i << 3); } *valuep = value; return 0; } int rtc_write32(struct udevice *dev, unsigned int reg, u32 value) { int i, ret; for (i = 0; i < sizeof(value); i++) { ret = rtc_write8(dev, reg + i, (value >> (i << 3)) & 0xff); if (ret) return ret; } return 0; } UCLASS_DRIVER(rtc) = { .name = "rtc", .id = UCLASS_RTC, };