blob: 621b596133eb1b7ce2668029ed117a49a2a9f868 [file] [log] [blame]
/*
* Copyright (c) 2015 Intel Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <errno.h>
#include <device.h>
#include <drivers/ioapic.h>
#include <init.h>
#include <nanokernel.h>
#include <rtc.h>
#include "qm_rtc.h"
static struct device *rtc_qmsi_dev;
static void (*user_callback)(struct device *dev);
static void rtc_qmsi_enable(struct device *dev)
{
clk_periph_enable(CLK_PERIPH_RTC_REGISTER | CLK_PERIPH_CLK);
}
static void rtc_qmsi_disable(struct device *dev)
{
clk_periph_disable(CLK_PERIPH_RTC_REGISTER);
}
static void rtc_callback(void)
{
if (user_callback)
user_callback(rtc_qmsi_dev);
}
static int rtc_qmsi_set_config(struct device *dev, struct rtc_config *cfg)
{
qm_rtc_config_t qm_cfg;
qm_cfg.init_val = cfg->init_val;
qm_cfg.alarm_en = cfg->alarm_enable;
qm_cfg.alarm_val = cfg->alarm_val;
qm_cfg.callback = rtc_callback;
user_callback = cfg->cb_fn;
if (qm_rtc_set_config(QM_RTC_0, &qm_cfg) != QM_RC_OK)
return -EIO;
return 0;
}
static int rtc_qmsi_set_alarm(struct device *dev, const uint32_t alarm_val)
{
return qm_rtc_set_alarm(QM_RTC_0, alarm_val) == QM_RC_OK ? 0 : -EIO;
}
static uint32_t rtc_qmsi_read(struct device *dev)
{
return QM_RTC[QM_RTC_0].rtc_ccvr;
}
static struct rtc_driver_api api = {
.enable = rtc_qmsi_enable,
.disable = rtc_qmsi_disable,
.read = rtc_qmsi_read,
.set_config = rtc_qmsi_set_config,
.set_alarm = rtc_qmsi_set_alarm,
};
static int rtc_qmsi_init(struct device *dev)
{
IRQ_CONNECT(QM_IRQ_RTC_0, CONFIG_RTC_QMSI_IRQ_PRI, qm_rtc_isr_0, 0,
IOAPIC_EDGE | IOAPIC_HIGH);
/* Unmask RTC interrupt */
irq_enable(QM_IRQ_RTC_0);
/* Route RTC interrupt to Lakemont */
QM_SCSS_INT->int_rtc_mask &= ~BIT(0);
dev->driver_api = &api;
return 0;
}
DEVICE_INIT(rtc, CONFIG_RTC_DRV_NAME, &rtc_qmsi_init, NULL, NULL,
SECONDARY, CONFIG_KERNEL_INIT_PRIORITY_DEVICE);
static struct device *rtc_qmsi_dev = DEVICE_GET(rtc);