drivers/counter/counter_qmsi_aon.c

/*
 * Copyright (c) 2016 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 <init.h>

#include <counter.h>

#include "qm_aon_counters.h"

static int aon_counter_qmsi_start(struct device *dev)
{
	if (qm_aonc_enable(QM_SCSS_AON_0)) {
		return -EIO;
	}

	return 0;
}

static int aon_counter_qmsi_stop(struct device *dev)
{
	qm_aonc_disable(QM_SCSS_AON_0);

	return 0;
}

static uint32_t aon_counter_qmsi_read(void)
{
	uint32_t value;

	qm_aonc_get_value(QM_SCSS_AON_0, &value);

	return value;
}

static int aon_counter_qmsi_set_alarm(struct device *dev,
				      counter_callback_t callback,
				      uint32_t count, void *user_data)
{
	return -ENODEV;
}

struct counter_driver_api aon_counter_qmsi_api = {
	.start = aon_counter_qmsi_start,
	.stop = aon_counter_qmsi_stop,
	.read = aon_counter_qmsi_read,
	.set_alarm = aon_counter_qmsi_set_alarm,
};

static int aon_counter_init(struct device *dev)
{
	return 0;
}

DEVICE_AND_API_INIT(aon_counter, CONFIG_AON_COUNTER_QMSI_DEV_NAME,
		    aon_counter_init, NULL, NULL, SECONDARY,
		    CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
		    (void *)&aon_counter_qmsi_api);