// SPDX-License-Identifier: GPL-2.0
/*
 * cxd2880_integ.c
 * Sony CXD2880 DVB-T2/T tuner + demodulator driver
 * integration layer common functions
 *
 * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
 */

#include <linux/ktime.h>
#include <linux/errno.h>

#include "cxd2880_tnrdmd.h"
#include "cxd2880_tnrdmd_mon.h"
#include "cxd2880_integ.h"

int cxd2880_integ_init(struct cxd2880_tnrdmd *tnr_dmd)
{
        int ret;
        ktime_t start;
        u8 cpu_task_completed = 0;

        if (!tnr_dmd)
                return -EINVAL;

        ret = cxd2880_tnrdmd_init1(tnr_dmd);
        if (ret)
                return ret;

        start = ktime_get();

        while (1) {
                ret =
                    cxd2880_tnrdmd_check_internal_cpu_status(tnr_dmd,
                                                     &cpu_task_completed);
                if (ret)
                        return ret;

                if (cpu_task_completed)
                        break;

                if (ktime_to_ms(ktime_sub(ktime_get(), start)) >
                                        CXD2880_TNRDMD_WAIT_INIT_TIMEOUT)
                        return -ETIMEDOUT;

                usleep_range(CXD2880_TNRDMD_WAIT_INIT_INTVL,
                             CXD2880_TNRDMD_WAIT_INIT_INTVL + 1000);
        }

        return cxd2880_tnrdmd_init2(tnr_dmd);
}

int cxd2880_integ_cancel(struct cxd2880_tnrdmd *tnr_dmd)
{
        if (!tnr_dmd)
                return -EINVAL;

        atomic_set(&tnr_dmd->cancel, 1);

        return 0;
}

int cxd2880_integ_check_cancellation(struct cxd2880_tnrdmd *tnr_dmd)
{
        if (!tnr_dmd)
                return -EINVAL;

        if (atomic_read(&tnr_dmd->cancel) != 0)
                return -ECANCELED;

        return 0;
}