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/*
* Copyright (c) 2019 Winner Microelectronics Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-09-15 flyingcys 1st version
* 2019-03-01 fanwenl add alarm
*/
#include <rtdevice.h>
#include <rtthread.h>
#include <sys/time.h>
#include "wm_regs.h"
#include "wm_irq.h"
#include "tls_common.h"
#include "wm_rtc.h"
#include "drv_rtc.h"
#ifdef BSP_USING_RTC
#if defined(RT_USING_SOFT_RTC)
#error "Please CANCEL the RT_USING_SOFT_RTC option. Make sure there is only one RTC device on the system."
#endif
static struct rt_rtc_device rtc_device;
static time_t wm_get_timestamp(void)
{
struct tm tm_new = {0};
int ctrl1 = 0;
int ctrl2 = 0;
ctrl1 = tls_reg_read32(HR_PMU_RTC_CTRL1);
ctrl2 = tls_reg_read32(HR_PMU_RTC_CTRL2);
tm_new.tm_year = ((int)((int)ctrl2 & 0x00007f00) >> 8);
tm_new.tm_mon = (ctrl2 & 0x0000000f);
tm_new.tm_mday = (ctrl1 & 0x1f000000) >> 24;
tm_new.tm_hour = (ctrl1 & 0x001f0000) >> 16;
tm_new.tm_min = (ctrl1 & 0x00003f00) >> 8;
tm_new.tm_sec = ctrl1 & 0x0000003f;
return timegm(&tm_new);
}
static int wm_set_timestamp(time_t timestamp)
{
int ctrl1 = 0;
int ctrl2 = 0;
struct tm tblock;
gmtime_r(×tamp, &tblock);
ctrl2 = tls_reg_read32(HR_PMU_RTC_CTRL2); /* disable */
ctrl2 &= ~(BIT(16));
tls_reg_write32(HR_PMU_RTC_CTRL2, ctrl2);
ctrl1 |= tblock.tm_sec;
ctrl1 |= tblock.tm_min << 8;
ctrl1 |= tblock.tm_hour << 16;
ctrl1 |= tblock.tm_mday << 24;
tls_reg_write32(HR_PMU_RTC_CTRL1, ctrl1);
ctrl2 = 0;
ctrl2 |= tblock.tm_mon;
ctrl2 |= tblock.tm_year << 8;
tls_reg_write32(HR_PMU_RTC_CTRL2, ctrl2);
ctrl2 = tls_reg_read32(HR_PMU_RTC_CTRL2);/* enable */
ctrl2 |= BIT(16);
tls_reg_write32(HR_PMU_RTC_CTRL2, ctrl2);
return RT_EOK;
}
#ifdef BSP_USING_ALARM
static int wm_alarm_set_timestamp(struct rt_rtc_wkalarm *wkalarm)
{
int ctrl1 = 0;
int ctrl2 = 0;
struct tm tblock;
time_t timestamp = 0;
timestamp = wm_get_timestamp();
gmtime_r(×tamp, &tblock);
tls_irq_enable(PMU_RTC_INT);
ctrl1 |= wkalarm->tm_sec;
ctrl1 |= wkalarm->tm_min << 8;
ctrl1 |= wkalarm->tm_hour << 16;
ctrl1 |= tblock.tm_mday << 24;
ctrl2 |= tblock.tm_mon;
ctrl2 |= tblock.tm_year << 8;
tls_reg_write32(HR_PMU_RTC_CTRL2, ctrl2 | BIT(16));
tls_reg_write32(HR_PMU_RTC_CTRL1, ctrl1 | BIT(31));/* must set the enable */
return RT_EOK;
}
static void wm_rtc_alarm_callback(void *arg)
{
rt_alarm_update(0, 0);
}
#endif
static rt_err_t wm_rtc_init(rt_device_t dev)
{
wm_set_timestamp((time_t)0);
#ifdef BSP_USING_ALARM
tls_rtc_isr_register(wm_rtc_alarm_callback, (void *)0);
#endif
return RT_EOK;
}
static rt_err_t wm_rtc_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t wm_rtc_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t wm_rtc_control(rt_device_t dev, int cmd, void *args)
{
#ifdef BSP_USING_ALARM
struct rt_rtc_device* rtc_device;
rtc_device = (struct rt_rtc_device* )dev;
#endif
RT_ASSERT(dev != RT_NULL);
switch (cmd)
{
case RT_DEVICE_CTRL_RTC_GET_TIME:
*(time_t *)args = wm_get_timestamp();
break;
case RT_DEVICE_CTRL_RTC_SET_TIME:
wm_set_timestamp(*(time_t *)args);
break;
#ifdef BSP_USING_ALARM
case RT_DEVICE_CTRL_RTC_GET_ALARM:
*(struct rt_rtc_wkalarm *)args = rtc_device->wkalarm;
return RT_EOK;
case RT_DEVICE_CTRL_RTC_SET_ALARM:
rtc_device->wkalarm = *(struct rt_rtc_wkalarm *)args;
wm_alarm_set_timestamp(&rtc_device->wkalarm);
break;
#endif
default:
return -RT_EINVAL;
}
return RT_EOK;
}
static rt_ssize_t wm_rtc_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
{
wm_rtc_control(dev, RT_DEVICE_CTRL_RTC_GET_TIME, buffer);
return size;
}
static rt_ssize_t wm_rtc_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
{
wm_rtc_control(dev, RT_DEVICE_CTRL_RTC_SET_TIME, (void *)buffer);
return size;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops _ops =
{
.init = wm_rtc_init,
.open = wm_rtc_open,
.close = wm_rtc_close,
.read = wm_rtc_read,
.write = wm_rtc_write,
.control = wm_rtc_control
};
#endif
int wm_hw_rtc_init(void)
{
rt_memset(&rtc_device, 0, sizeof(rtc_device));
rtc_device.device.type = RT_Device_Class_RTC;
rtc_device.device.rx_indicate = RT_NULL;
rtc_device.device.tx_complete = RT_NULL;
#ifdef RT_USING_DEVICE_OPS
rtc_device.ops = &_ops;
#else
rtc_device.device.init = wm_rtc_init;
rtc_device.device.open = wm_rtc_open;
rtc_device.device.close = wm_rtc_close;
rtc_device.device.read = wm_rtc_read;
rtc_device.device.write = wm_rtc_write;
rtc_device.device.control = wm_rtc_control;
#endif
rtc_device.device.user_data = RT_NULL;
/* register a rtc device */
rt_device_register(&rtc_device.device, "rtc", RT_DEVICE_FLAG_RDWR);
return 0;
}
INIT_DEVICE_EXPORT(wm_hw_rtc_init);
#endif /* BSP_USING_RTC */
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