1// SPDX-License-Identifier: GPL-2.0
2/*
3 * cxd2880_integ.c
4 * Sony CXD2880 DVB-T2/T tuner + demodulator driver
5 * integration layer common functions
6 *
7 * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
8 */
9
10#include <linux/ktime.h>
11#include <linux/errno.h>
12
13#include "cxd2880_tnrdmd.h"
14#include "cxd2880_tnrdmd_mon.h"
15#include "cxd2880_integ.h"
16
17int cxd2880_integ_init(struct cxd2880_tnrdmd *tnr_dmd)
18{
19	int ret;
20	ktime_t start;
21	u8 cpu_task_completed = 0;
22
23	if (!tnr_dmd)
24		return -EINVAL;
25
26	ret = cxd2880_tnrdmd_init1(tnr_dmd);
27	if (ret)
28		return ret;
29
30	start = ktime_get();
31
32	while (1) {
33		ret =
34		    cxd2880_tnrdmd_check_internal_cpu_status(tnr_dmd,
35						     &cpu_task_completed);
36		if (ret)
37			return ret;
38
39		if (cpu_task_completed)
40			break;
41
42		if (ktime_to_ms(ktime_sub(ktime_get(), start)) >
43					CXD2880_TNRDMD_WAIT_INIT_TIMEOUT)
44			return -ETIMEDOUT;
45
46		usleep_range(CXD2880_TNRDMD_WAIT_INIT_INTVL,
47			     CXD2880_TNRDMD_WAIT_INIT_INTVL + 1000);
48	}
49
50	return cxd2880_tnrdmd_init2(tnr_dmd);
51}
52
53int cxd2880_integ_cancel(struct cxd2880_tnrdmd *tnr_dmd)
54{
55	if (!tnr_dmd)
56		return -EINVAL;
57
58	atomic_set(&tnr_dmd->cancel, 1);
59
60	return 0;
61}
62
63int cxd2880_integ_check_cancellation(struct cxd2880_tnrdmd *tnr_dmd)
64{
65	if (!tnr_dmd)
66		return -EINVAL;
67
68	if (atomic_read(&tnr_dmd->cancel) != 0)
69		return -ECANCELED;
70
71	return 0;
72}
73