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1// SPDX-License-Identifier: GPL-2.02/*3 * cxd2880_integ.c4 * Sony CXD2880 DVB-T2/T tuner + demodulator driver5 * integration layer common functions6 *7 * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation8 */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